d/freebsd-nq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
9a96729c64
freebsd-nq/contrib/gcc/except.c

4041 lines
105 KiB
C
Raw Normal View History

Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
/* Implements exception handling.
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
Copyright (C) 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
1999, 2000, 2001, 2002 Free Software Foundation, Inc.
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Contributed by Mike Stump <mrs@cygnus.com>.
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
This file is part of GCC.
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 2, or (at your option) any later
version.
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
You should have received a copy of the GNU General Public License
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
along with GCC; see the file COPYING. If not, write to the Free
Software Foundation, 59 Temple Place - Suite 330, Boston, MA
02111-1307, USA. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
/* An exception is an event that can be signaled from within a
function. This event can then be "caught" or "trapped" by the
callers of this function. This potentially allows program flow to
be transferred to any arbitrary code associated with a function call
several levels up the stack.
The intended use for this mechanism is for signaling "exceptional
events" in an out-of-band fashion, hence its name. The C++ language
(and many other OO-styled or functional languages) practically
requires such a mechanism, as otherwise it becomes very difficult
or even impossible to signal failure conditions in complex
situations. The traditional C++ example is when an error occurs in
the process of constructing an object; without such a mechanism, it
is impossible to signal that the error occurs without adding global
state variables and error checks around every object construction.
The act of causing this event to occur is referred to as "throwing
an exception". (Alternate terms include "raising an exception" or
"signaling an exception".) The term "throw" is used because control
is returned to the callers of the function that is signaling the
exception, and thus there is the concept of "throwing" the
exception up the call stack.
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
[ Add updated documentation on how to use this. ] */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
#include "config.h"
#include "system.h"
#include "rtl.h"
#include "tree.h"
#include "flags.h"
#include "function.h"
#include "expr.h"
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
#include "libfuncs.h"
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
#include "insn-config.h"
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
#include "except.h"
#include "integrate.h"
#include "hard-reg-set.h"
#include "basic-block.h"
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
#include "output.h"
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
#include "dwarf2asm.h"
#include "dwarf2out.h"
#include "dwarf2.h"
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
#include "toplev.h"
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
#include "hashtab.h"
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
#include "intl.h"
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
#include "ggc.h"
#include "tm_p.h"
#include "target.h"
/* Provide defaults for stuff that may not be defined when using
sjlj exceptions. */
#ifndef EH_RETURN_STACKADJ_RTX
#define EH_RETURN_STACKADJ_RTX 0
#endif
#ifndef EH_RETURN_HANDLER_RTX
#define EH_RETURN_HANDLER_RTX 0
#endif
#ifndef EH_RETURN_DATA_REGNO
#define EH_RETURN_DATA_REGNO(N) INVALID_REGNUM
#endif
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Nonzero means enable synchronous exceptions for non-call instructions. */
int flag_non_call_exceptions;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Protect cleanup actions with must-not-throw regions, with a call
to the given failure handler. */
tree (*lang_protect_cleanup_actions) PARAMS ((void));
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Return true if type A catches type B. */
int (*lang_eh_type_covers) PARAMS ((tree a, tree b));
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Map a type to a runtime object to match type. */
tree (*lang_eh_runtime_type) PARAMS ((tree));
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Gcc 3.1.0 pre-release from the FSF anoncvs repo on 9-May-2002 15:57:15 EDT.
2002-05-09 20:02:13 +00:00
/* A hash table of label to region number. */
struct ehl_map_entry
{
rtx label;
struct eh_region *region;
};
static htab_t exception_handler_label_map;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
static int call_site_base;
static unsigned int sjlj_funcdef_number;
static htab_t type_to_runtime_map;
/* Describe the SjLj_Function_Context structure. */
static tree sjlj_fc_type_node;
static int sjlj_fc_call_site_ofs;
static int sjlj_fc_data_ofs;
static int sjlj_fc_personality_ofs;
static int sjlj_fc_lsda_ofs;
static int sjlj_fc_jbuf_ofs;
/* Describes one exception region. */
struct eh_region
{
/* The immediately surrounding region. */
struct eh_region *outer;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* The list of immediately contained regions. */
struct eh_region *inner;
struct eh_region *next_peer;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* An identifier for this region. */
int region_number;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Gcc 3.1.0 pre-release from the FSF anoncvs repo on 9-May-2002 15:57:15 EDT.
2002-05-09 20:02:13 +00:00
/* When a region is deleted, its parents inherit the REG_EH_REGION
numbers already assigned. */
bitmap aka;
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Each region does exactly one thing. */
enum eh_region_type
{
ERT_UNKNOWN = 0,
ERT_CLEANUP,
ERT_TRY,
ERT_CATCH,
ERT_ALLOWED_EXCEPTIONS,
ERT_MUST_NOT_THROW,
ERT_THROW,
ERT_FIXUP
} type;
/* Holds the action to perform based on the preceding type. */
union {
/* A list of catch blocks, a surrounding try block,
and the label for continuing after a catch. */
struct {
struct eh_region *catch;
struct eh_region *last_catch;
struct eh_region *prev_try;
rtx continue_label;
} try;
/* The list through the catch handlers, the list of type objects
matched, and the list of associated filters. */
struct {
struct eh_region *next_catch;
struct eh_region *prev_catch;
tree type_list;
tree filter_list;
} catch;
/* A tree_list of allowed types. */
struct {
tree type_list;
int filter;
} allowed;
/* The type given by a call to "throw foo();", or discovered
for a throw. */
struct {
tree type;
} throw;
/* Retain the cleanup expression even after expansion so that
we can match up fixup regions. */
struct {
tree exp;
} cleanup;
/* The real region (by expression and by pointer) that fixup code
should live in. */
struct {
tree cleanup_exp;
struct eh_region *real_region;
} fixup;
} u;
/* Entry point for this region's handler before landing pads are built. */
rtx label;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Entry point for this region's handler from the runtime eh library. */
rtx landing_pad;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Entry point for this region's handler from an inner region. */
rtx post_landing_pad;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* The RESX insn for handing off control to the next outermost handler,
if appropriate. */
rtx resume;
};
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Used to save exception status for each function. */
struct eh_status
{
/* The tree of all regions for this function. */
struct eh_region *region_tree;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* The same information as an indexable array. */
struct eh_region **region_array;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* The most recently open region. */
struct eh_region *cur_region;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* This is the region for which we are processing catch blocks. */
struct eh_region *try_region;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* A stack (TREE_LIST) of lists of handlers. The TREE_VALUE of each
node is itself a TREE_CHAINed list of handlers for regions that
are not yet closed. The TREE_VALUE of each entry contains the
handler for the corresponding entry on the ehstack. */
tree protect_list;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
rtx filter;
rtx exc_ptr;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
int built_landing_pads;
int last_region_number;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
varray_type ttype_data;
varray_type ehspec_data;
varray_type action_record_data;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
struct call_site_record
{
rtx landing_pad;
int action;
} *call_site_data;
int call_site_data_used;
int call_site_data_size;
rtx ehr_stackadj;
rtx ehr_handler;
rtx ehr_label;
rtx sjlj_fc;
rtx sjlj_exit_after;
};
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
static void mark_eh_region PARAMS ((struct eh_region *));
Gcc 3.1.0 pre-release from the FSF anoncvs repo on 9-May-2002 15:57:15 EDT.
2002-05-09 20:02:13 +00:00
static int mark_ehl_map_entry PARAMS ((PTR *, PTR));
static void mark_ehl_map PARAMS ((void *));
static void free_region PARAMS ((struct eh_region *));
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
static int t2r_eq PARAMS ((const PTR,
const PTR));
static hashval_t t2r_hash PARAMS ((const PTR));
static int t2r_mark_1 PARAMS ((PTR *, PTR));
static void t2r_mark PARAMS ((PTR));
static void add_type_for_runtime PARAMS ((tree));
static tree lookup_type_for_runtime PARAMS ((tree));
static struct eh_region *expand_eh_region_end PARAMS ((void));
static rtx get_exception_filter PARAMS ((struct function *));
static void collect_eh_region_array PARAMS ((void));
static void resolve_fixup_regions PARAMS ((void));
static void remove_fixup_regions PARAMS ((void));
static void remove_unreachable_regions PARAMS ((rtx));
static void convert_from_eh_region_ranges_1 PARAMS ((rtx *, int *, int));
static struct eh_region *duplicate_eh_region_1 PARAMS ((struct eh_region *,
struct inline_remap *));
static void duplicate_eh_region_2 PARAMS ((struct eh_region *,
struct eh_region **));
static int ttypes_filter_eq PARAMS ((const PTR,
const PTR));
static hashval_t ttypes_filter_hash PARAMS ((const PTR));
static int ehspec_filter_eq PARAMS ((const PTR,
const PTR));
static hashval_t ehspec_filter_hash PARAMS ((const PTR));
static int add_ttypes_entry PARAMS ((htab_t, tree));
static int add_ehspec_entry PARAMS ((htab_t, htab_t,
tree));
static void assign_filter_values PARAMS ((void));
static void build_post_landing_pads PARAMS ((void));
static void connect_post_landing_pads PARAMS ((void));
static void dw2_build_landing_pads PARAMS ((void));
struct sjlj_lp_info;
static bool sjlj_find_directly_reachable_regions
PARAMS ((struct sjlj_lp_info *));
static void sjlj_assign_call_site_values
PARAMS ((rtx, struct sjlj_lp_info *));
static void sjlj_mark_call_sites
PARAMS ((struct sjlj_lp_info *));
static void sjlj_emit_function_enter PARAMS ((rtx));
static void sjlj_emit_function_exit PARAMS ((void));
static void sjlj_emit_dispatch_table
PARAMS ((rtx, struct sjlj_lp_info *));
static void sjlj_build_landing_pads PARAMS ((void));
Gcc 3.1.0 pre-release from the FSF anoncvs repo on 9-May-2002 15:57:15 EDT.
2002-05-09 20:02:13 +00:00
static hashval_t ehl_hash PARAMS ((const PTR));
static int ehl_eq PARAMS ((const PTR,
const PTR));
static void ehl_free PARAMS ((PTR));
static void add_ehl_entry PARAMS ((rtx,
struct eh_region *));
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
static void remove_exception_handler_label PARAMS ((rtx));
static void remove_eh_handler PARAMS ((struct eh_region *));
Gcc 3.1.0 pre-release from the FSF anoncvs repo on 9-May-2002 15:57:15 EDT.
2002-05-09 20:02:13 +00:00
static int for_each_eh_label_1 PARAMS ((PTR *, PTR));
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
struct reachable_info;
/* The return value of reachable_next_level. */
enum reachable_code
{
/* The given exception is not processed by the given region. */
RNL_NOT_CAUGHT,
/* The given exception may need processing by the given region. */
RNL_MAYBE_CAUGHT,
/* The given exception is completely processed by the given region. */
RNL_CAUGHT,
/* The given exception is completely processed by the runtime. */
RNL_BLOCKED
};
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
static int check_handled PARAMS ((tree, tree));
static void add_reachable_handler
PARAMS ((struct reachable_info *, struct eh_region *,
struct eh_region *));
static enum reachable_code reachable_next_level
PARAMS ((struct eh_region *, tree, struct reachable_info *));
static int action_record_eq PARAMS ((const PTR,
const PTR));
static hashval_t action_record_hash PARAMS ((const PTR));
static int add_action_record PARAMS ((htab_t, int, int));
static int collect_one_action_chain PARAMS ((htab_t,
struct eh_region *));
static int add_call_site PARAMS ((rtx, int));
static void push_uleb128 PARAMS ((varray_type *,
unsigned int));
static void push_sleb128 PARAMS ((varray_type *, int));
#ifndef HAVE_AS_LEB128
static int dw2_size_of_call_site_table PARAMS ((void));
static int sjlj_size_of_call_site_table PARAMS ((void));
#endif
static void dw2_output_call_site_table PARAMS ((void));
static void sjlj_output_call_site_table PARAMS ((void));
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Routine to see if exception handling is turned on.
DO_WARN is non-zero if we want to inform the user that exception
handling is turned off.
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
This is used to ensure that -fexceptions has been specified if the
compiler tries to use any exception-specific functions. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
int
doing_eh (do_warn)
int do_warn;
{
if (! flag_exceptions)
{
static int warned = 0;
if (! warned && do_warn)
{
error ("exception handling disabled, use -fexceptions to enable");
warned = 1;
}
return 0;
}
return 1;
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
void
init_eh ()
{
Gcc 3.1.0 pre-release from the FSF anoncvs repo on 9-May-2002 15:57:15 EDT.
2002-05-09 20:02:13 +00:00
ggc_add_root (&exception_handler_label_map, 1, 1, mark_ehl_map);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (! flag_exceptions)
return;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
type_to_runtime_map = htab_create (31, t2r_hash, t2r_eq, NULL);
ggc_add_root (&type_to_runtime_map, 1, sizeof (htab_t), t2r_mark);
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Create the SjLj_Function_Context structure. This should match
the definition in unwind-sjlj.c. */
if (USING_SJLJ_EXCEPTIONS)
{
tree f_jbuf, f_per, f_lsda, f_prev, f_cs, f_data, tmp;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
sjlj_fc_type_node = make_lang_type (RECORD_TYPE);
ggc_add_tree_root (&sjlj_fc_type_node, 1);
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
f_prev = build_decl (FIELD_DECL, get_identifier ("__prev"),
build_pointer_type (sjlj_fc_type_node));
DECL_FIELD_CONTEXT (f_prev) = sjlj_fc_type_node;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
f_cs = build_decl (FIELD_DECL, get_identifier ("__call_site"),
integer_type_node);
DECL_FIELD_CONTEXT (f_cs) = sjlj_fc_type_node;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
tmp = build_index_type (build_int_2 (4 - 1, 0));
tmp = build_array_type (type_for_mode (word_mode, 1), tmp);
f_data = build_decl (FIELD_DECL, get_identifier ("__data"), tmp);
DECL_FIELD_CONTEXT (f_data) = sjlj_fc_type_node;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
f_per = build_decl (FIELD_DECL, get_identifier ("__personality"),
ptr_type_node);
DECL_FIELD_CONTEXT (f_per) = sjlj_fc_type_node;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
f_lsda = build_decl (FIELD_DECL, get_identifier ("__lsda"),
ptr_type_node);
DECL_FIELD_CONTEXT (f_lsda) = sjlj_fc_type_node;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
#ifdef DONT_USE_BUILTIN_SETJMP
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
#ifdef JMP_BUF_SIZE
tmp = build_int_2 (JMP_BUF_SIZE - 1, 0);
#else
/* Should be large enough for most systems, if it is not,
JMP_BUF_SIZE should be defined with the proper value. It will
also tend to be larger than necessary for most systems, a more
optimal port will define JMP_BUF_SIZE. */
tmp = build_int_2 (FIRST_PSEUDO_REGISTER + 2 - 1, 0);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
#endif
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
#else
/* This is 2 for builtin_setjmp, plus whatever the target requires
via STACK_SAVEAREA_MODE (SAVE_NONLOCAL). */
tmp = build_int_2 ((GET_MODE_SIZE (STACK_SAVEAREA_MODE (SAVE_NONLOCAL))
/ GET_MODE_SIZE (Pmode)) + 2 - 1, 0);
#endif
tmp = build_index_type (tmp);
tmp = build_array_type (ptr_type_node, tmp);
f_jbuf = build_decl (FIELD_DECL, get_identifier ("__jbuf"), tmp);
#ifdef DONT_USE_BUILTIN_SETJMP
/* We don't know what the alignment requirements of the
runtime's jmp_buf has. Overestimate. */
DECL_ALIGN (f_jbuf) = BIGGEST_ALIGNMENT;
DECL_USER_ALIGN (f_jbuf) = 1;
#endif
DECL_FIELD_CONTEXT (f_jbuf) = sjlj_fc_type_node;
TYPE_FIELDS (sjlj_fc_type_node) = f_prev;
TREE_CHAIN (f_prev) = f_cs;
TREE_CHAIN (f_cs) = f_data;
TREE_CHAIN (f_data) = f_per;
TREE_CHAIN (f_per) = f_lsda;
TREE_CHAIN (f_lsda) = f_jbuf;
layout_type (sjlj_fc_type_node);
/* Cache the interesting field offsets so that we have
easy access from rtl. */
sjlj_fc_call_site_ofs
= (tree_low_cst (DECL_FIELD_OFFSET (f_cs), 1)
+ tree_low_cst (DECL_FIELD_BIT_OFFSET (f_cs), 1) / BITS_PER_UNIT);
sjlj_fc_data_ofs
= (tree_low_cst (DECL_FIELD_OFFSET (f_data), 1)
+ tree_low_cst (DECL_FIELD_BIT_OFFSET (f_data), 1) / BITS_PER_UNIT);
sjlj_fc_personality_ofs
= (tree_low_cst (DECL_FIELD_OFFSET (f_per), 1)
+ tree_low_cst (DECL_FIELD_BIT_OFFSET (f_per), 1) / BITS_PER_UNIT);
sjlj_fc_lsda_ofs
= (tree_low_cst (DECL_FIELD_OFFSET (f_lsda), 1)
+ tree_low_cst (DECL_FIELD_BIT_OFFSET (f_lsda), 1) / BITS_PER_UNIT);
sjlj_fc_jbuf_ofs
= (tree_low_cst (DECL_FIELD_OFFSET (f_jbuf), 1)
+ tree_low_cst (DECL_FIELD_BIT_OFFSET (f_jbuf), 1) / BITS_PER_UNIT);
}
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
void
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
init_eh_for_function ()
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
cfun->eh = (struct eh_status *) xcalloc (1, sizeof (struct eh_status));
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Mark EH for GC. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
static void
mark_eh_region (region)
struct eh_region *region;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (! region)
return;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
switch (region->type)
{
case ERT_UNKNOWN:
/* This can happen if a nested function is inside the body of a region
and we do a GC as part of processing it. */
break;
case ERT_CLEANUP:
ggc_mark_tree (region->u.cleanup.exp);
break;
case ERT_TRY:
ggc_mark_rtx (region->u.try.continue_label);
break;
case ERT_CATCH:
ggc_mark_tree (region->u.catch.type_list);
ggc_mark_tree (region->u.catch.filter_list);
break;
case ERT_ALLOWED_EXCEPTIONS:
ggc_mark_tree (region->u.allowed.type_list);
break;
case ERT_MUST_NOT_THROW:
break;
case ERT_THROW:
ggc_mark_tree (region->u.throw.type);
break;
case ERT_FIXUP:
ggc_mark_tree (region->u.fixup.cleanup_exp);
break;
default:
abort ();
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
ggc_mark_rtx (region->label);
ggc_mark_rtx (region->resume);
ggc_mark_rtx (region->landing_pad);
ggc_mark_rtx (region->post_landing_pad);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Gcc 3.1.0 pre-release from the FSF anoncvs repo on 9-May-2002 15:57:15 EDT.
2002-05-09 20:02:13 +00:00
static int
mark_ehl_map_entry (pentry, data)
PTR *pentry;
PTR data ATTRIBUTE_UNUSED;
{
struct ehl_map_entry *entry = *(struct ehl_map_entry **) pentry;
ggc_mark_rtx (entry->label);
return 1;
}
static void
mark_ehl_map (pp)
void *pp;
{
htab_t map = *(htab_t *) pp;
if (map)
htab_traverse (map, mark_ehl_map_entry, NULL);
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
void
mark_eh_status (eh)
struct eh_status *eh;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
int i;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (eh == 0)
return;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* If we've called collect_eh_region_array, use it. Otherwise walk
the tree non-recursively. */
if (eh->region_array)
{
for (i = eh->last_region_number; i > 0; --i)
{
struct eh_region *r = eh->region_array[i];
if (r && r->region_number == i)
mark_eh_region (r);
}
}
else if (eh->region_tree)
{
struct eh_region *r = eh->region_tree;
while (1)
{
mark_eh_region (r);
if (r->inner)
r = r->inner;
else if (r->next_peer)
r = r->next_peer;
else
{
do {
r = r->outer;
if (r == NULL)
goto tree_done;
} while (r->next_peer == NULL);
r = r->next_peer;
}
}
tree_done:;
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
ggc_mark_tree (eh->protect_list);
ggc_mark_rtx (eh->filter);
ggc_mark_rtx (eh->exc_ptr);
ggc_mark_tree_varray (eh->ttype_data);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (eh->call_site_data)
{
for (i = eh->call_site_data_used - 1; i >= 0; --i)
ggc_mark_rtx (eh->call_site_data[i].landing_pad);
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
ggc_mark_rtx (eh->ehr_stackadj);
ggc_mark_rtx (eh->ehr_handler);
ggc_mark_rtx (eh->ehr_label);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
ggc_mark_rtx (eh->sjlj_fc);
ggc_mark_rtx (eh->sjlj_exit_after);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Gcc 3.1.0 pre-release from the FSF anoncvs repo on 9-May-2002 15:57:15 EDT.
2002-05-09 20:02:13 +00:00
static inline void
free_region (r)
struct eh_region *r;
{
/* Note that the aka bitmap is freed by regset_release_memory. But if
we ever replace with a non-obstack implementation, this would be
the place to do it. */
free (r);
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
void
free_eh_status (f)
struct function *f;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
struct eh_status *eh = f->eh;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (eh->region_array)
{
int i;
for (i = eh->last_region_number; i > 0; --i)
{
struct eh_region *r = eh->region_array[i];
/* Mind we don't free a region struct more than once. */
if (r && r->region_number == i)
Gcc 3.1.0 pre-release from the FSF anoncvs repo on 9-May-2002 15:57:15 EDT.
2002-05-09 20:02:13 +00:00
free_region (r);
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
}
free (eh->region_array);
}
else if (eh->region_tree)
{
struct eh_region *next, *r = eh->region_tree;
while (1)
{
if (r->inner)
r = r->inner;
else if (r->next_peer)
{
next = r->next_peer;
Gcc 3.1.0 pre-release from the FSF anoncvs repo on 9-May-2002 15:57:15 EDT.
2002-05-09 20:02:13 +00:00
free_region (r);
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
r = next;
}
else
{
do {
next = r->outer;
Gcc 3.1.0 pre-release from the FSF anoncvs repo on 9-May-2002 15:57:15 EDT.
2002-05-09 20:02:13 +00:00
free_region (r);
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
r = next;
if (r == NULL)
goto tree_done;
} while (r->next_peer == NULL);
next = r->next_peer;
Gcc 3.1.0 pre-release from the FSF anoncvs repo on 9-May-2002 15:57:15 EDT.
2002-05-09 20:02:13 +00:00
free_region (r);
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
r = next;
}
}
tree_done:;
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
VARRAY_FREE (eh->ttype_data);
VARRAY_FREE (eh->ehspec_data);
VARRAY_FREE (eh->action_record_data);
if (eh->call_site_data)
free (eh->call_site_data);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
free (eh);
f->eh = NULL;
Gcc 3.1.0 pre-release from the FSF anoncvs repo on 9-May-2002 15:57:15 EDT.
2002-05-09 20:02:13 +00:00
if (exception_handler_label_map)
{
htab_delete (exception_handler_label_map);
exception_handler_label_map = NULL;
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Start an exception handling region. All instructions emitted
after this point are considered to be part of the region until
expand_eh_region_end is invoked. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
void
expand_eh_region_start ()
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
struct eh_region *new_region;
struct eh_region *cur_region;
rtx note;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (! doing_eh (0))
return;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Insert a new blank region as a leaf in the tree. */
new_region = (struct eh_region *) xcalloc (1, sizeof (*new_region));
cur_region = cfun->eh->cur_region;
new_region->outer = cur_region;
if (cur_region)
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
new_region->next_peer = cur_region->inner;
cur_region->inner = new_region;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
else
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
new_region->next_peer = cfun->eh->region_tree;
cfun->eh->region_tree = new_region;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
cfun->eh->cur_region = new_region;
/* Create a note marking the start of this region. */
new_region->region_number = ++cfun->eh->last_region_number;
note = emit_note (NULL, NOTE_INSN_EH_REGION_BEG);
NOTE_EH_HANDLER (note) = new_region->region_number;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Common code to end a region. Returns the region just ended. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
static struct eh_region *
expand_eh_region_end ()
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
struct eh_region *cur_region = cfun->eh->cur_region;
rtx note;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Create a note marking the end of this region. */
note = emit_note (NULL, NOTE_INSN_EH_REGION_END);
NOTE_EH_HANDLER (note) = cur_region->region_number;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Pop. */
cfun->eh->cur_region = cur_region->outer;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
return cur_region;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* End an exception handling region for a cleanup. HANDLER is an
expression to expand for the cleanup. */
void
expand_eh_region_end_cleanup (handler)
tree handler;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
struct eh_region *region;
tree protect_cleanup_actions;
rtx around_label;
rtx data_save[2];
Import the setjump/longjump exception handling fixes from GCC 2.95.3.test3 that were removed from GCC 2.95.3.test4 and the subsequent release due to problems on HP-UX. However, they work just fine on all the BSD's. W/o these patches the following program segmentation faults if compiled with -O2 (but not -Os or -O or -O0): #include <stdio.h> class A { public: A() { printf("c'tor A\n"); } ~A(){ printf("d'tor A\n"); } }; class foo : public A { public: foo() { printf("C'tor foo\n"); throw 8; } ~foo() { printf("D'tor foo\n"); } }; int main(){ try { foo fii; } catch (int){ printf("catch ...\n"); } return 0; }
2001-03-24 01:58:31 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (! doing_eh (0))
return;
Import the setjump/longjump exception handling fixes from GCC 2.95.3.test3 that were removed from GCC 2.95.3.test4 and the subsequent release due to problems on HP-UX. However, they work just fine on all the BSD's. W/o these patches the following program segmentation faults if compiled with -O2 (but not -Os or -O or -O0): #include <stdio.h> class A { public: A() { printf("c'tor A\n"); } ~A(){ printf("d'tor A\n"); } }; class foo : public A { public: foo() { printf("C'tor foo\n"); throw 8; } ~foo() { printf("D'tor foo\n"); } }; int main(){ try { foo fii; } catch (int){ printf("catch ...\n"); } return 0; }
2001-03-24 01:58:31 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
region = expand_eh_region_end ();
region->type = ERT_CLEANUP;
region->label = gen_label_rtx ();
region->u.cleanup.exp = handler;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
around_label = gen_label_rtx ();
emit_jump (around_label);
Virgin import of the GCC 2.95.3 compilers
2001-03-19 19:46:16 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
emit_label (region->label);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Give the language a chance to specify an action to be taken if an
exception is thrown that would propagate out of the HANDLER. */
protect_cleanup_actions
= (lang_protect_cleanup_actions
? (*lang_protect_cleanup_actions) ()
: NULL_TREE);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (protect_cleanup_actions)
expand_eh_region_start ();
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* In case this cleanup involves an inline destructor with a try block in
it, we need to save the EH return data registers around it. */
data_save[0] = gen_reg_rtx (Pmode);
emit_move_insn (data_save[0], get_exception_pointer (cfun));
data_save[1] = gen_reg_rtx (word_mode);
emit_move_insn (data_save[1], get_exception_filter (cfun));
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
expand_expr (handler, const0_rtx, VOIDmode, 0);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
emit_move_insn (cfun->eh->exc_ptr, data_save[0]);
emit_move_insn (cfun->eh->filter, data_save[1]);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (protect_cleanup_actions)
expand_eh_region_end_must_not_throw (protect_cleanup_actions);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* We need any stack adjustment complete before the around_label. */
do_pending_stack_adjust ();
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* We delay the generation of the _Unwind_Resume until we generate
landing pads. We emit a marker here so as to get good control
flow data in the meantime. */
region->resume
= emit_jump_insn (gen_rtx_RESX (VOIDmode, region->region_number));
emit_barrier ();
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
emit_label (around_label);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* End an exception handling region for a try block, and prepares
for subsequent calls to expand_start_catch. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
void
expand_start_all_catch ()
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
struct eh_region *region;
if (! doing_eh (1))
return;
region = expand_eh_region_end ();
region->type = ERT_TRY;
region->u.try.prev_try = cfun->eh->try_region;
region->u.try.continue_label = gen_label_rtx ();
cfun->eh->try_region = region;
emit_jump (region->u.try.continue_label);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Begin a catch clause. TYPE is the type caught, a list of such types, or
null if this is a catch-all clause. Providing a type list enables to
associate the catch region with potentially several exception types, which
is useful e.g. for Ada. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
void
expand_start_catch (type_or_list)
tree type_or_list;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
struct eh_region *t, *c, *l;
tree type_list;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (! doing_eh (0))
return;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
type_list = type_or_list;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (type_or_list)
{
/* Ensure to always end up with a type list to normalize further
processing, then register each type against the runtime types
map. */
tree type_node;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (TREE_CODE (type_or_list) != TREE_LIST)
type_list = tree_cons (NULL_TREE, type_or_list, NULL_TREE);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
type_node = type_list;
for (; type_node; type_node = TREE_CHAIN (type_node))
add_type_for_runtime (TREE_VALUE (type_node));
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
expand_eh_region_start ();
t = cfun->eh->try_region;
c = cfun->eh->cur_region;
c->type = ERT_CATCH;
c->u.catch.type_list = type_list;
c->label = gen_label_rtx ();
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
l = t->u.try.last_catch;
c->u.catch.prev_catch = l;
if (l)
l->u.catch.next_catch = c;
else
t->u.try.catch = c;
t->u.try.last_catch = c;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
emit_label (c->label);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* End a catch clause. Control will resume after the try/catch block. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
void
expand_end_catch ()
{
struct eh_region *try_region, *catch_region;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (! doing_eh (0))
return;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
catch_region = expand_eh_region_end ();
try_region = cfun->eh->try_region;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
emit_jump (try_region->u.try.continue_label);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* End a sequence of catch handlers for a try block. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
void
expand_end_all_catch ()
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
struct eh_region *try_region;
if (! doing_eh (0))
return;
try_region = cfun->eh->try_region;
cfun->eh->try_region = try_region->u.try.prev_try;
emit_label (try_region->u.try.continue_label);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* End an exception region for an exception type filter. ALLOWED is a
TREE_LIST of types to be matched by the runtime. FAILURE is an
expression to invoke if a mismatch occurs.
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
??? We could use these semantics for calls to rethrow, too; if we can
see the surrounding catch clause, we know that the exception we're
rethrowing satisfies the "filter" of the catch type. */
void
expand_eh_region_end_allowed (allowed, failure)
tree allowed, failure;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
struct eh_region *region;
rtx around_label;
if (! doing_eh (0))
return;
region = expand_eh_region_end ();
region->type = ERT_ALLOWED_EXCEPTIONS;
region->u.allowed.type_list = allowed;
region->label = gen_label_rtx ();
for (; allowed ; allowed = TREE_CHAIN (allowed))
add_type_for_runtime (TREE_VALUE (allowed));
/* We must emit the call to FAILURE here, so that if this function
throws a different exception, that it will be processed by the
correct region. */
around_label = gen_label_rtx ();
emit_jump (around_label);
emit_label (region->label);
expand_expr (failure, const0_rtx, VOIDmode, EXPAND_NORMAL);
/* We must adjust the stack before we reach the AROUND_LABEL because
the call to FAILURE does not occur on all paths to the
AROUND_LABEL. */
do_pending_stack_adjust ();
emit_label (around_label);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* End an exception region for a must-not-throw filter. FAILURE is an
expression invoke if an uncaught exception propagates this far.
This is conceptually identical to expand_eh_region_end_allowed with
an empty allowed list (if you passed "std::terminate" instead of
"__cxa_call_unexpected"), but they are represented differently in
the C++ LSDA. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
void
expand_eh_region_end_must_not_throw (failure)
tree failure;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
struct eh_region *region;
rtx around_label;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (! doing_eh (0))
return;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
region = expand_eh_region_end ();
region->type = ERT_MUST_NOT_THROW;
region->label = gen_label_rtx ();
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* We must emit the call to FAILURE here, so that if this function
throws a different exception, that it will be processed by the
correct region. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
around_label = gen_label_rtx ();
emit_jump (around_label);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
emit_label (region->label);
expand_expr (failure, const0_rtx, VOIDmode, EXPAND_NORMAL);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
emit_label (around_label);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* End an exception region for a throw. No handling goes on here,
but it's the easiest way for the front-end to indicate what type
is being thrown. */
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
void
expand_eh_region_end_throw (type)
tree type;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
struct eh_region *region;
if (! doing_eh (0))
return;
region = expand_eh_region_end ();
region->type = ERT_THROW;
region->u.throw.type = type;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* End a fixup region. Within this region the cleanups for the immediately
enclosing region are _not_ run. This is used for goto cleanup to avoid
destroying an object twice.
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
This would be an extraordinarily simple prospect, were it not for the
fact that we don't actually know what the immediately enclosing region
is. This surprising fact is because expand_cleanups is currently
generating a sequence that it will insert somewhere else. We collect
the proper notion of "enclosing" in convert_from_eh_region_ranges. */
void
expand_eh_region_end_fixup (handler)
tree handler;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
struct eh_region *fixup;
if (! doing_eh (0))
return;
fixup = expand_eh_region_end ();
fixup->type = ERT_FIXUP;
fixup->u.fixup.cleanup_exp = handler;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Return an rtl expression for a pointer to the exception object
within a handler. */
rtx
get_exception_pointer (fun)
struct function *fun;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
rtx exc_ptr = fun->eh->exc_ptr;
if (fun == cfun && ! exc_ptr)
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
exc_ptr = gen_reg_rtx (Pmode);
fun->eh->exc_ptr = exc_ptr;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
return exc_ptr;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Return an rtl expression for the exception dispatch filter
within a handler. */
static rtx
get_exception_filter (fun)
struct function *fun;
{
rtx filter = fun->eh->filter;
if (fun == cfun && ! filter)
{
filter = gen_reg_rtx (word_mode);
fun->eh->filter = filter;
}
return filter;
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Begin a region that will contain entries created with
add_partial_entry. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
void
begin_protect_partials ()
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Push room for a new list. */
cfun->eh->protect_list
= tree_cons (NULL_TREE, NULL_TREE, cfun->eh->protect_list);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
/* Start a new exception region for a region of code that has a
cleanup action and push the HANDLER for the region onto
protect_list. All of the regions created with add_partial_entry
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
will be ended when end_protect_partials is invoked.
??? The only difference between this purpose and that of
expand_decl_cleanup is that in this case, we only want the cleanup to
run if an exception is thrown. This should also be handled using
binding levels. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
void
add_partial_entry (handler)
tree handler;
{
expand_eh_region_start ();
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Add this entry to the front of the list. */
TREE_VALUE (cfun->eh->protect_list)
= tree_cons (NULL_TREE, handler, TREE_VALUE (cfun->eh->protect_list));
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* End all the pending exception regions on protect_list. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
void
end_protect_partials ()
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
tree t;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Pop the topmost entry. */
t = TREE_VALUE (cfun->eh->protect_list);
cfun->eh->protect_list = TREE_CHAIN (cfun->eh->protect_list);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* End all the exception regions. */
for (; t; t = TREE_CHAIN (t))
expand_eh_region_end_cleanup (TREE_VALUE (t));
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* This section is for the exception handling specific optimization pass. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Random access the exception region tree. It's just as simple to
collect the regions this way as in expand_eh_region_start, but
without having to realloc memory. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
static void
collect_eh_region_array ()
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
struct eh_region **array, *i;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
i = cfun->eh->region_tree;
if (! i)
return;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
array = xcalloc (cfun->eh->last_region_number + 1, sizeof (*array));
cfun->eh->region_array = array;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
while (1)
{
array[i->region_number] = i;
/* If there are sub-regions, process them. */
if (i->inner)
i = i->inner;
/* If there are peers, process them. */
else if (i->next_peer)
i = i->next_peer;
/* Otherwise, step back up the tree to the next peer. */
else
{
do {
i = i->outer;
if (i == NULL)
return;
} while (i->next_peer == NULL);
i = i->next_peer;
}
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
static void
resolve_fixup_regions ()
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
int i, j, n = cfun->eh->last_region_number;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
for (i = 1; i <= n; ++i)
{
struct eh_region *fixup = cfun->eh->region_array[i];
struct eh_region *cleanup = 0;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (! fixup || fixup->type != ERT_FIXUP)
continue;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
for (j = 1; j <= n; ++j)
{
cleanup = cfun->eh->region_array[j];
if (cleanup->type == ERT_CLEANUP
&& cleanup->u.cleanup.exp == fixup->u.fixup.cleanup_exp)
break;
}
if (j > n)
abort ();
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
fixup->u.fixup.real_region = cleanup->outer;
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Now that we've discovered what region actually encloses a fixup,
we can shuffle pointers and remove them from the tree. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
static void
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
remove_fixup_regions ()
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
int i;
rtx insn, note;
struct eh_region *fixup;
/* Walk the insn chain and adjust the REG_EH_REGION numbers
for instructions referencing fixup regions. This is only
strictly necessary for fixup regions with no parent, but
doesn't hurt to do it for all regions. */
for (insn = get_insns(); insn ; insn = NEXT_INSN (insn))
if (INSN_P (insn)
&& (note = find_reg_note (insn, REG_EH_REGION, NULL))
&& INTVAL (XEXP (note, 0)) > 0
&& (fixup = cfun->eh->region_array[INTVAL (XEXP (note, 0))])
&& fixup->type == ERT_FIXUP)
{
if (fixup->u.fixup.real_region)
XEXP (note, 0) = GEN_INT (fixup->u.fixup.real_region->region_number);
else
remove_note (insn, note);
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Remove the fixup regions from the tree. */
for (i = cfun->eh->last_region_number; i > 0; --i)
{
fixup = cfun->eh->region_array[i];
if (! fixup)
continue;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Allow GC to maybe free some memory. */
if (fixup->type == ERT_CLEANUP)
fixup->u.cleanup.exp = NULL_TREE;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (fixup->type != ERT_FIXUP)
continue;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (fixup->inner)
{
struct eh_region *parent, *p, **pp;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
parent = fixup->u.fixup.real_region;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Fix up the children's parent pointers; find the end of
the list. */
for (p = fixup->inner; ; p = p->next_peer)
{
p->outer = parent;
if (! p->next_peer)
break;
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* In the tree of cleanups, only outer-inner ordering matters.
So link the children back in anywhere at the correct level. */
if (parent)
pp = &parent->inner;
else
pp = &cfun->eh->region_tree;
p->next_peer = *pp;
*pp = fixup->inner;
fixup->inner = NULL;
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
remove_eh_handler (fixup);
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Remove all regions whose labels are not reachable from insns. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
static void
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
remove_unreachable_regions (insns)
rtx insns;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
int i, *uid_region_num;
bool *reachable;
struct eh_region *r;
rtx insn;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
uid_region_num = xcalloc (get_max_uid (), sizeof(int));
reachable = xcalloc (cfun->eh->last_region_number + 1, sizeof(bool));
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
for (i = cfun->eh->last_region_number; i > 0; --i)
{
r = cfun->eh->region_array[i];
if (!r || r->region_number != i)
continue;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (r->resume)
{
if (uid_region_num[INSN_UID (r->resume)])
abort ();
uid_region_num[INSN_UID (r->resume)] = i;
}
if (r->label)
{
if (uid_region_num[INSN_UID (r->label)])
abort ();
uid_region_num[INSN_UID (r->label)] = i;
}
if (r->type == ERT_TRY && r->u.try.continue_label)
{
if (uid_region_num[INSN_UID (r->u.try.continue_label)])
abort ();
uid_region_num[INSN_UID (r->u.try.continue_label)] = i;
}
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
for (insn = insns; insn; insn = NEXT_INSN (insn))
reachable[uid_region_num[INSN_UID (insn)]] = true;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
for (i = cfun->eh->last_region_number; i > 0; --i)
{
r = cfun->eh->region_array[i];
if (r && r->region_number == i && !reachable[i])
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Don't remove ERT_THROW regions if their outer region
is reachable. */
if (r->type == ERT_THROW
&& r->outer
&& reachable[r->outer->region_number])
continue;
remove_eh_handler (r);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
free (reachable);
free (uid_region_num);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Turn NOTE_INSN_EH_REGION notes into REG_EH_REGION notes for each
can_throw instruction in the region. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
static void
convert_from_eh_region_ranges_1 (pinsns, orig_sp, cur)
rtx *pinsns;
int *orig_sp;
int cur;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
int *sp = orig_sp;
rtx insn, next;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
for (insn = *pinsns; insn ; insn = next)
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
next = NEXT_INSN (insn);
if (GET_CODE (insn) == NOTE)
{
int kind = NOTE_LINE_NUMBER (insn);
if (kind == NOTE_INSN_EH_REGION_BEG
|| kind == NOTE_INSN_EH_REGION_END)
{
if (kind == NOTE_INSN_EH_REGION_BEG)
{
struct eh_region *r;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
*sp++ = cur;
cur = NOTE_EH_HANDLER (insn);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
r = cfun->eh->region_array[cur];
if (r->type == ERT_FIXUP)
{
r = r->u.fixup.real_region;
cur = r ? r->region_number : 0;
}
else if (r->type == ERT_CATCH)
{
r = r->outer;
cur = r ? r->region_number : 0;
}
}
else
cur = *--sp;
/* Removing the first insn of a CALL_PLACEHOLDER sequence
requires extra care to adjust sequence start. */
if (insn == *pinsns)
*pinsns = next;
remove_insn (insn);
continue;
}
}
else if (INSN_P (insn))
{
if (cur > 0
&& ! find_reg_note (insn, REG_EH_REGION, NULL_RTX)
/* Calls can always potentially throw exceptions, unless
they have a REG_EH_REGION note with a value of 0 or less.
Which should be the only possible kind so far. */
&& (GET_CODE (insn) == CALL_INSN
/* If we wanted exceptions for non-call insns, then
any may_trap_p instruction could throw. */
|| (flag_non_call_exceptions
&& GET_CODE (PATTERN (insn)) != CLOBBER
&& GET_CODE (PATTERN (insn)) != USE
&& may_trap_p (PATTERN (insn)))))
{
REG_NOTES (insn) = alloc_EXPR_LIST (REG_EH_REGION, GEN_INT (cur),
REG_NOTES (insn));
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (GET_CODE (insn) == CALL_INSN
&& GET_CODE (PATTERN (insn)) == CALL_PLACEHOLDER)
{
convert_from_eh_region_ranges_1 (&XEXP (PATTERN (insn), 0),
sp, cur);
convert_from_eh_region_ranges_1 (&XEXP (PATTERN (insn), 1),
sp, cur);
convert_from_eh_region_ranges_1 (&XEXP (PATTERN (insn), 2),
sp, cur);
}
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (sp != orig_sp)
abort ();
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
void
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
convert_from_eh_region_ranges ()
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
int *stack;
rtx insns;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
collect_eh_region_array ();
resolve_fixup_regions ();
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
stack = xmalloc (sizeof (int) * (cfun->eh->last_region_number + 1));
insns = get_insns ();
convert_from_eh_region_ranges_1 (&insns, stack, 0);
free (stack);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
remove_fixup_regions ();
remove_unreachable_regions (insns);
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Gcc 3.1.0 pre-release from the FSF anoncvs repo on 9-May-2002 15:57:15 EDT.
2002-05-09 20:02:13 +00:00
static void
add_ehl_entry (label, region)
rtx label;
struct eh_region *region;
{
struct ehl_map_entry **slot, *entry;
LABEL_PRESERVE_P (label) = 1;
entry = (struct ehl_map_entry *) xmalloc (sizeof (*entry));
entry->label = label;
entry->region = region;
slot = (struct ehl_map_entry **)
htab_find_slot (exception_handler_label_map, entry, INSERT);
/* Before landing pad creation, each exception handler has its own
label. After landing pad creation, the exception handlers may
share landing pads. This is ok, since maybe_remove_eh_handler
only requires the 1-1 mapping before landing pad creation. */
if (*slot && !cfun->eh->built_landing_pads)
abort ();
*slot = entry;
}
static void
ehl_free (pentry)
PTR pentry;
{
struct ehl_map_entry *entry = (struct ehl_map_entry *)pentry;
LABEL_PRESERVE_P (entry->label) = 0;
free (entry);
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
void
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
find_exception_handler_labels ()
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
int i;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Gcc 3.1.0 pre-release from the FSF anoncvs repo on 9-May-2002 15:57:15 EDT.
2002-05-09 20:02:13 +00:00
if (exception_handler_label_map)
htab_empty (exception_handler_label_map);
else
{
/* ??? The expansion factor here (3/2) must be greater than the htab
occupancy factor (4/3) to avoid unnecessary resizing. */
exception_handler_label_map
= htab_create (cfun->eh->last_region_number * 3 / 2,
ehl_hash, ehl_eq, ehl_free);
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (cfun->eh->region_tree == NULL)
return;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
for (i = cfun->eh->last_region_number; i > 0; --i)
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
struct eh_region *region = cfun->eh->region_array[i];
rtx lab;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (! region || region->region_number != i)
continue;
if (cfun->eh->built_landing_pads)
lab = region->landing_pad;
else
lab = region->label;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (lab)
Gcc 3.1.0 pre-release from the FSF anoncvs repo on 9-May-2002 15:57:15 EDT.
2002-05-09 20:02:13 +00:00
add_ehl_entry (lab, region);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* For sjlj exceptions, need the return label to remain live until
after landing pad generation. */
if (USING_SJLJ_EXCEPTIONS && ! cfun->eh->built_landing_pads)
Gcc 3.1.0 pre-release from the FSF anoncvs repo on 9-May-2002 15:57:15 EDT.
2002-05-09 20:02:13 +00:00
add_ehl_entry (return_label, NULL);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Gcc 3.1.0 pre-release from the FSF anoncvs repo on 9-May-2002 15:57:15 EDT.
2002-05-09 20:02:13 +00:00
bool
current_function_has_exception_handlers ()
{
int i;
for (i = cfun->eh->last_region_number; i > 0; --i)
{
struct eh_region *region = cfun->eh->region_array[i];
if (! region || region->region_number != i)
continue;
if (region->type != ERT_THROW)
return true;
}
return false;
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
static struct eh_region *
duplicate_eh_region_1 (o, map)
struct eh_region *o;
struct inline_remap *map;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
struct eh_region *n
= (struct eh_region *) xcalloc (1, sizeof (struct eh_region));
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
n->region_number = o->region_number + cfun->eh->last_region_number;
n->type = o->type;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
switch (n->type)
{
case ERT_CLEANUP:
case ERT_MUST_NOT_THROW:
break;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
case ERT_TRY:
if (o->u.try.continue_label)
n->u.try.continue_label
= get_label_from_map (map,
CODE_LABEL_NUMBER (o->u.try.continue_label));
break;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
case ERT_CATCH:
n->u.catch.type_list = o->u.catch.type_list;
break;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
case ERT_ALLOWED_EXCEPTIONS:
n->u.allowed.type_list = o->u.allowed.type_list;
break;
case ERT_THROW:
n->u.throw.type = o->u.throw.type;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
default:
abort ();
}
if (o->label)
n->label = get_label_from_map (map, CODE_LABEL_NUMBER (o->label));
if (o->resume)
{
n->resume = map->insn_map[INSN_UID (o->resume)];
if (n->resume == NULL)
abort ();
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
return n;
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
static void
duplicate_eh_region_2 (o, n_array)
struct eh_region *o;
struct eh_region **n_array;
{
struct eh_region *n = n_array[o->region_number];
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
switch (n->type)
{
case ERT_TRY:
n->u.try.catch = n_array[o->u.try.catch->region_number];
n->u.try.last_catch = n_array[o->u.try.last_catch->region_number];
break;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
case ERT_CATCH:
if (o->u.catch.next_catch)
n->u.catch.next_catch = n_array[o->u.catch.next_catch->region_number];
if (o->u.catch.prev_catch)
n->u.catch.prev_catch = n_array[o->u.catch.prev_catch->region_number];
break;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
default:
break;
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (o->outer)
n->outer = n_array[o->outer->region_number];
if (o->inner)
n->inner = n_array[o->inner->region_number];
if (o->next_peer)
n->next_peer = n_array[o->next_peer->region_number];
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
int
duplicate_eh_regions (ifun, map)
struct function *ifun;
struct inline_remap *map;
{
int ifun_last_region_number = ifun->eh->last_region_number;
struct eh_region **n_array, *root, *cur;
int i;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (ifun_last_region_number == 0)
return 0;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
n_array = xcalloc (ifun_last_region_number + 1, sizeof (*n_array));
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
for (i = 1; i <= ifun_last_region_number; ++i)
{
cur = ifun->eh->region_array[i];
if (!cur || cur->region_number != i)
continue;
n_array[i] = duplicate_eh_region_1 (cur, map);
}
for (i = 1; i <= ifun_last_region_number; ++i)
{
cur = ifun->eh->region_array[i];
if (!cur || cur->region_number != i)
continue;
duplicate_eh_region_2 (cur, n_array);
}
root = n_array[ifun->eh->region_tree->region_number];
cur = cfun->eh->cur_region;
if (cur)
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
struct eh_region *p = cur->inner;
if (p)
{
while (p->next_peer)
p = p->next_peer;
p->next_peer = root;
}
else
cur->inner = root;
for (i = 1; i <= ifun_last_region_number; ++i)
if (n_array[i] && n_array[i]->outer == NULL)
n_array[i]->outer = cur;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
else
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
struct eh_region *p = cfun->eh->region_tree;
if (p)
{
while (p->next_peer)
p = p->next_peer;
p->next_peer = root;
}
else
cfun->eh->region_tree = root;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
free (n_array);
i = cfun->eh->last_region_number;
cfun->eh->last_region_number = i + ifun_last_region_number;
return i;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
static int
t2r_eq (pentry, pdata)
const PTR pentry;
const PTR pdata;
{
tree entry = (tree) pentry;
tree data = (tree) pdata;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
return TREE_PURPOSE (entry) == data;
}
static hashval_t
t2r_hash (pentry)
const PTR pentry;
{
tree entry = (tree) pentry;
return TYPE_HASH (TREE_PURPOSE (entry));
}
static int
t2r_mark_1 (slot, data)
PTR *slot;
PTR data ATTRIBUTE_UNUSED;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
tree contents = (tree) *slot;
ggc_mark_tree (contents);
return 1;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
static void
t2r_mark (addr)
PTR addr;
{
htab_traverse (*(htab_t *)addr, t2r_mark_1, NULL);
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
static void
add_type_for_runtime (type)
tree type;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
tree *slot;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
slot = (tree *) htab_find_slot_with_hash (type_to_runtime_map, type,
TYPE_HASH (type), INSERT);
if (*slot == NULL)
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
tree runtime = (*lang_eh_runtime_type) (type);
*slot = tree_cons (type, runtime, NULL_TREE);
}
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
static tree
lookup_type_for_runtime (type)
tree type;
{
tree *slot;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
slot = (tree *) htab_find_slot_with_hash (type_to_runtime_map, type,
TYPE_HASH (type), NO_INSERT);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* We should have always inserted the data earlier. */
return TREE_VALUE (*slot);
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Represent an entry in @TTypes for either catch actions
or exception filter actions. */
struct ttypes_filter
{
tree t;
int filter;
};
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Compare ENTRY (a ttypes_filter entry in the hash table) with DATA
(a tree) for a @TTypes type node we are thinking about adding. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
static int
ttypes_filter_eq (pentry, pdata)
const PTR pentry;
const PTR pdata;
{
const struct ttypes_filter *entry = (const struct ttypes_filter *) pentry;
tree data = (tree) pdata;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
return entry->t == data;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
static hashval_t
ttypes_filter_hash (pentry)
const PTR pentry;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
const struct ttypes_filter *entry = (const struct ttypes_filter *) pentry;
return TYPE_HASH (entry->t);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Compare ENTRY with DATA (both struct ttypes_filter) for a @TTypes
exception specification list we are thinking about adding. */
/* ??? Currently we use the type lists in the order given. Someone
should put these in some canonical order. */
static int
ehspec_filter_eq (pentry, pdata)
const PTR pentry;
const PTR pdata;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
const struct ttypes_filter *entry = (const struct ttypes_filter *) pentry;
const struct ttypes_filter *data = (const struct ttypes_filter *) pdata;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
return type_list_equal (entry->t, data->t);
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Hash function for exception specification lists. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
static hashval_t
ehspec_filter_hash (pentry)
const PTR pentry;
{
const struct ttypes_filter *entry = (const struct ttypes_filter *) pentry;
hashval_t h = 0;
tree list;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
for (list = entry->t; list ; list = TREE_CHAIN (list))
h = (h << 5) + (h >> 27) + TYPE_HASH (TREE_VALUE (list));
return h;
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Add TYPE to cfun->eh->ttype_data, using TYPES_HASH to speed
up the search. Return the filter value to be used. */
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
static int
add_ttypes_entry (ttypes_hash, type)
htab_t ttypes_hash;
tree type;
{
struct ttypes_filter **slot, *n;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
slot = (struct ttypes_filter **)
htab_find_slot_with_hash (ttypes_hash, type, TYPE_HASH (type), INSERT);
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if ((n = *slot) == NULL)
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Filter value is a 1 based table index. */
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
n = (struct ttypes_filter *) xmalloc (sizeof (*n));
n->t = type;
n->filter = VARRAY_ACTIVE_SIZE (cfun->eh->ttype_data) + 1;
*slot = n;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
VARRAY_PUSH_TREE (cfun->eh->ttype_data, type);
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
return n->filter;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Add LIST to cfun->eh->ehspec_data, using EHSPEC_HASH and TYPES_HASH
to speed up the search. Return the filter value to be used. */
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
static int
add_ehspec_entry (ehspec_hash, ttypes_hash, list)
htab_t ehspec_hash;
htab_t ttypes_hash;
tree list;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
struct ttypes_filter **slot, *n;
struct ttypes_filter dummy;
dummy.t = list;
slot = (struct ttypes_filter **)
htab_find_slot (ehspec_hash, &dummy, INSERT);
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if ((n = *slot) == NULL)
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Filter value is a -1 based byte index into a uleb128 buffer. */
n = (struct ttypes_filter *) xmalloc (sizeof (*n));
n->t = list;
n->filter = -(VARRAY_ACTIVE_SIZE (cfun->eh->ehspec_data) + 1);
*slot = n;
/* Look up each type in the list and encode its filter
value as a uleb128. Terminate the list with 0. */
for (; list ; list = TREE_CHAIN (list))
push_uleb128 (&cfun->eh->ehspec_data,
add_ttypes_entry (ttypes_hash, TREE_VALUE (list)));
VARRAY_PUSH_UCHAR (cfun->eh->ehspec_data, 0);
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
return n->filter;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Generate the action filter values to be used for CATCH and
ALLOWED_EXCEPTIONS regions. When using dwarf2 exception regions,
we use lots of landing pads, and so every type or list can share
the same filter value, which saves table space. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
static void
assign_filter_values ()
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
int i;
htab_t ttypes, ehspec;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
VARRAY_TREE_INIT (cfun->eh->ttype_data, 16, "ttype_data");
VARRAY_UCHAR_INIT (cfun->eh->ehspec_data, 64, "ehspec_data");
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
ttypes = htab_create (31, ttypes_filter_hash, ttypes_filter_eq, free);
ehspec = htab_create (31, ehspec_filter_hash, ehspec_filter_eq, free);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
for (i = cfun->eh->last_region_number; i > 0; --i)
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
struct eh_region *r = cfun->eh->region_array[i];
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Mind we don't process a region more than once. */
if (!r || r->region_number != i)
continue;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
switch (r->type)
{
case ERT_CATCH:
/* Whatever type_list is (NULL or true list), we build a list
of filters for the region. */
r->u.catch.filter_list = NULL_TREE;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (r->u.catch.type_list != NULL)
{
/* Get a filter value for each of the types caught and store
them in the region's dedicated list. */
tree tp_node = r->u.catch.type_list;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
for (;tp_node; tp_node = TREE_CHAIN (tp_node))
{
int flt = add_ttypes_entry (ttypes, TREE_VALUE (tp_node));
tree flt_node = build_int_2 (flt, 0);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
r->u.catch.filter_list
= tree_cons (NULL_TREE, flt_node, r->u.catch.filter_list);
}
}
else
{
/* Get a filter value for the NULL list also since it will need
an action record anyway. */
int flt = add_ttypes_entry (ttypes, NULL);
tree flt_node = build_int_2 (flt, 0);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
r->u.catch.filter_list
= tree_cons (NULL_TREE, flt_node, r->u.catch.filter_list);
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
break;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
case ERT_ALLOWED_EXCEPTIONS:
r->u.allowed.filter
= add_ehspec_entry (ehspec, ttypes, r->u.allowed.type_list);
break;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
default:
break;
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
htab_delete (ttypes);
htab_delete (ehspec);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
static void
build_post_landing_pads ()
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
int i;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
for (i = cfun->eh->last_region_number; i > 0; --i)
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
struct eh_region *region = cfun->eh->region_array[i];
rtx seq;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Mind we don't process a region more than once. */
if (!region || region->region_number != i)
continue;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
switch (region->type)
{
case ERT_TRY:
/* ??? Collect the set of all non-overlapping catch handlers
all the way up the chain until blocked by a cleanup. */
/* ??? Outer try regions can share landing pads with inner
try regions if the types are completely non-overlapping,
and there are no intervening cleanups. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
region->post_landing_pad = gen_label_rtx ();
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
start_sequence ();
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
emit_label (region->post_landing_pad);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* ??? It is mighty inconvenient to call back into the
switch statement generation code in expand_end_case.
Rapid prototyping sez a sequence of ifs. */
{
struct eh_region *c;
for (c = region->u.try.catch; c ; c = c->u.catch.next_catch)
{
/* ??? _Unwind_ForcedUnwind wants no match here. */
if (c->u.catch.type_list == NULL)
emit_jump (c->label);
else
{
/* Need for one cmp/jump per type caught. Each type
list entry has a matching entry in the filter list
(see assign_filter_values). */
tree tp_node = c->u.catch.type_list;
tree flt_node = c->u.catch.filter_list;
for (; tp_node; )
{
emit_cmp_and_jump_insns
(cfun->eh->filter,
GEN_INT (tree_low_cst (TREE_VALUE (flt_node), 0)),
EQ, NULL_RTX, word_mode, 0, c->label);
tp_node = TREE_CHAIN (tp_node);
flt_node = TREE_CHAIN (flt_node);
}
}
}
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* We delay the generation of the _Unwind_Resume until we generate
landing pads. We emit a marker here so as to get good control
flow data in the meantime. */
region->resume
= emit_jump_insn (gen_rtx_RESX (VOIDmode, region->region_number));
emit_barrier ();
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
seq = get_insns ();
end_sequence ();
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
emit_insns_before (seq, region->u.try.catch->label);
break;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
case ERT_ALLOWED_EXCEPTIONS:
region->post_landing_pad = gen_label_rtx ();
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
start_sequence ();
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
emit_label (region->post_landing_pad);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
emit_cmp_and_jump_insns (cfun->eh->filter,
GEN_INT (region->u.allowed.filter),
EQ, NULL_RTX, word_mode, 0, region->label);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* We delay the generation of the _Unwind_Resume until we generate
landing pads. We emit a marker here so as to get good control
flow data in the meantime. */
region->resume
= emit_jump_insn (gen_rtx_RESX (VOIDmode, region->region_number));
emit_barrier ();
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
seq = get_insns ();
end_sequence ();
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
emit_insns_before (seq, region->label);
break;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
case ERT_CLEANUP:
case ERT_MUST_NOT_THROW:
region->post_landing_pad = region->label;
break;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
case ERT_CATCH:
case ERT_THROW:
/* Nothing to do. */
break;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
default:
abort ();
}
}
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Replace RESX patterns with jumps to the next handler if any, or calls to
_Unwind_Resume otherwise. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
static void
connect_post_landing_pads ()
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
int i;
for (i = cfun->eh->last_region_number; i > 0; --i)
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
struct eh_region *region = cfun->eh->region_array[i];
struct eh_region *outer;
rtx seq;
/* Mind we don't process a region more than once. */
if (!region || region->region_number != i)
continue;
/* If there is no RESX, or it has been deleted by flow, there's
nothing to fix up. */
if (! region->resume || INSN_DELETED_P (region->resume))
continue;
/* Search for another landing pad in this function. */
for (outer = region->outer; outer ; outer = outer->outer)
if (outer->post_landing_pad)
break;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
start_sequence ();
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (outer)
emit_jump (outer->post_landing_pad);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
else
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
emit_library_call (unwind_resume_libfunc, LCT_THROW,
VOIDmode, 1, cfun->eh->exc_ptr, Pmode);
seq = get_insns ();
end_sequence ();
emit_insns_before (seq, region->resume);
delete_insn (region->resume);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
static void
dw2_build_landing_pads ()
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
int i;
unsigned int j;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
for (i = cfun->eh->last_region_number; i > 0; --i)
{
struct eh_region *region = cfun->eh->region_array[i];
rtx seq;
bool clobbers_hard_regs = false;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Mind we don't process a region more than once. */
if (!region || region->region_number != i)
continue;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (region->type != ERT_CLEANUP
&& region->type != ERT_TRY
&& region->type != ERT_ALLOWED_EXCEPTIONS)
continue;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
start_sequence ();
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
region->landing_pad = gen_label_rtx ();
emit_label (region->landing_pad);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
#ifdef HAVE_exception_receiver
if (HAVE_exception_receiver)
emit_insn (gen_exception_receiver ());
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
else
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
#endif
#ifdef HAVE_nonlocal_goto_receiver
if (HAVE_nonlocal_goto_receiver)
emit_insn (gen_nonlocal_goto_receiver ());
else
#endif
{ /* Nothing */ }
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* If the eh_return data registers are call-saved, then we
won't have considered them clobbered from the call that
threw. Kill them now. */
for (j = 0; ; ++j)
{
unsigned r = EH_RETURN_DATA_REGNO (j);
if (r == INVALID_REGNUM)
break;
if (! call_used_regs[r])
{
emit_insn (gen_rtx_CLOBBER (VOIDmode, gen_rtx_REG (Pmode, r)));
clobbers_hard_regs = true;
}
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (clobbers_hard_regs)
{
/* @@@ This is a kludge. Not all machine descriptions define a
blockage insn, but we must not allow the code we just generated
to be reordered by scheduling. So emit an ASM_INPUT to act as
blockage insn. */
emit_insn (gen_rtx_ASM_INPUT (VOIDmode, ""));
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
emit_move_insn (cfun->eh->exc_ptr,
gen_rtx_REG (Pmode, EH_RETURN_DATA_REGNO (0)));
emit_move_insn (cfun->eh->filter,
gen_rtx_REG (word_mode, EH_RETURN_DATA_REGNO (1)));
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
seq = get_insns ();
end_sequence ();
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
emit_insns_before (seq, region->post_landing_pad);
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
struct sjlj_lp_info
{
int directly_reachable;
int action_index;
int dispatch_index;
int call_site_index;
};
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
static bool
sjlj_find_directly_reachable_regions (lp_info)
struct sjlj_lp_info *lp_info;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
rtx insn;
bool found_one = false;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
for (insn = get_insns (); insn ; insn = NEXT_INSN (insn))
{
struct eh_region *region;
enum reachable_code rc;
tree type_thrown;
rtx note;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (! INSN_P (insn))
continue;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
note = find_reg_note (insn, REG_EH_REGION, NULL_RTX);
if (!note || INTVAL (XEXP (note, 0)) <= 0)
continue;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
region = cfun->eh->region_array[INTVAL (XEXP (note, 0))];
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
type_thrown = NULL_TREE;
if (region->type == ERT_THROW)
{
type_thrown = region->u.throw.type;
region = region->outer;
}
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Find the first containing region that might handle the exception.
That's the landing pad to which we will transfer control. */
rc = RNL_NOT_CAUGHT;
for (; region; region = region->outer)
{
rc = reachable_next_level (region, type_thrown, 0);
if (rc != RNL_NOT_CAUGHT)
break;
}
if (rc == RNL_MAYBE_CAUGHT || rc == RNL_CAUGHT)
{
lp_info[region->region_number].directly_reachable = 1;
found_one = true;
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
return found_one;
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
static void
sjlj_assign_call_site_values (dispatch_label, lp_info)
rtx dispatch_label;
struct sjlj_lp_info *lp_info;
{
htab_t ar_hash;
int i, index;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* First task: build the action table. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
VARRAY_UCHAR_INIT (cfun->eh->action_record_data, 64, "action_record_data");
ar_hash = htab_create (31, action_record_hash, action_record_eq, free);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
for (i = cfun->eh->last_region_number; i > 0; --i)
if (lp_info[i].directly_reachable)
{
struct eh_region *r = cfun->eh->region_array[i];
r->landing_pad = dispatch_label;
lp_info[i].action_index = collect_one_action_chain (ar_hash, r);
if (lp_info[i].action_index != -1)
cfun->uses_eh_lsda = 1;
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
htab_delete (ar_hash);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Next: assign dispatch values. In dwarf2 terms, this would be the
landing pad label for the region. For sjlj though, there is one
common landing pad from which we dispatch to the post-landing pads.
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
A region receives a dispatch index if it is directly reachable
and requires in-function processing. Regions that share post-landing
pads may share dispatch indices. */
/* ??? Post-landing pad sharing doesn't actually happen at the moment
(see build_post_landing_pads) so we don't bother checking for it. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
index = 0;
for (i = cfun->eh->last_region_number; i > 0; --i)
if (lp_info[i].directly_reachable)
lp_info[i].dispatch_index = index++;
/* Finally: assign call-site values. If dwarf2 terms, this would be
the region number assigned by convert_to_eh_region_ranges, but
handles no-action and must-not-throw differently. */
call_site_base = 1;
for (i = cfun->eh->last_region_number; i > 0; --i)
if (lp_info[i].directly_reachable)
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
int action = lp_info[i].action_index;
/* Map must-not-throw to otherwise unused call-site index 0. */
if (action == -2)
index = 0;
/* Map no-action to otherwise unused call-site index -1. */
else if (action == -1)
index = -1;
/* Otherwise, look it up in the table. */
else
index = add_call_site (GEN_INT (lp_info[i].dispatch_index), action);
lp_info[i].call_site_index = index;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
static void
sjlj_mark_call_sites (lp_info)
struct sjlj_lp_info *lp_info;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
int last_call_site = -2;
rtx insn, mem;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
for (insn = get_insns (); insn ; insn = NEXT_INSN (insn))
{
struct eh_region *region;
int this_call_site;
rtx note, before, p;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Reset value tracking at extended basic block boundaries. */
if (GET_CODE (insn) == CODE_LABEL)
last_call_site = -2;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (! INSN_P (insn))
continue;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
note = find_reg_note (insn, REG_EH_REGION, NULL_RTX);
if (!note)
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Calls (and trapping insns) without notes are outside any
exception handling region in this function. Mark them as
no action. */
if (GET_CODE (insn) == CALL_INSN
|| (flag_non_call_exceptions
&& may_trap_p (PATTERN (insn))))
this_call_site = -1;
else
continue;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
else
{
/* Calls that are known to not throw need not be marked. */
if (INTVAL (XEXP (note, 0)) <= 0)
continue;
region = cfun->eh->region_array[INTVAL (XEXP (note, 0))];
this_call_site = lp_info[region->region_number].call_site_index;
}
if (this_call_site == last_call_site)
continue;
/* Don't separate a call from it's argument loads. */
before = insn;
if (GET_CODE (insn) == CALL_INSN)
before = find_first_parameter_load (insn, NULL_RTX);
start_sequence ();
mem = adjust_address (cfun->eh->sjlj_fc, TYPE_MODE (integer_type_node),
sjlj_fc_call_site_ofs);
emit_move_insn (mem, GEN_INT (this_call_site));
p = get_insns ();
end_sequence ();
emit_insns_before (p, before);
last_call_site = this_call_site;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Construct the SjLj_Function_Context. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
static void
sjlj_emit_function_enter (dispatch_label)
rtx dispatch_label;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
rtx fn_begin, fc, mem, seq;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
fc = cfun->eh->sjlj_fc;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
start_sequence ();
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* We're storing this libcall's address into memory instead of
calling it directly. Thus, we must call assemble_external_libcall
here, as we can not depend on emit_library_call to do it for us. */
assemble_external_libcall (eh_personality_libfunc);
mem = adjust_address (fc, Pmode, sjlj_fc_personality_ofs);
emit_move_insn (mem, eh_personality_libfunc);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
mem = adjust_address (fc, Pmode, sjlj_fc_lsda_ofs);
if (cfun->uses_eh_lsda)
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
char buf[20];
ASM_GENERATE_INTERNAL_LABEL (buf, "LLSDA", sjlj_funcdef_number);
emit_move_insn (mem, gen_rtx_SYMBOL_REF (Pmode, ggc_strdup (buf)));
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
else
emit_move_insn (mem, const0_rtx);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
#ifdef DONT_USE_BUILTIN_SETJMP
{
rtx x, note;
x = emit_library_call_value (setjmp_libfunc, NULL_RTX, LCT_RETURNS_TWICE,
TYPE_MODE (integer_type_node), 1,
plus_constant (XEXP (fc, 0),
sjlj_fc_jbuf_ofs), Pmode);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
note = emit_note (NULL, NOTE_INSN_EXPECTED_VALUE);
NOTE_EXPECTED_VALUE (note) = gen_rtx_EQ (VOIDmode, x, const0_rtx);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
emit_cmp_and_jump_insns (x, const0_rtx, NE, 0,
TYPE_MODE (integer_type_node), 0, dispatch_label);
}
#else
expand_builtin_setjmp_setup (plus_constant (XEXP (fc, 0), sjlj_fc_jbuf_ofs),
dispatch_label);
#endif
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
emit_library_call (unwind_sjlj_register_libfunc, LCT_NORMAL, VOIDmode,
1, XEXP (fc, 0), Pmode);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
seq = get_insns ();
end_sequence ();
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* ??? Instead of doing this at the beginning of the function,
do this in a block that is at loop level 0 and dominates all
can_throw_internal instructions. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
for (fn_begin = get_insns (); ; fn_begin = NEXT_INSN (fn_begin))
if (GET_CODE (fn_begin) == NOTE
&& NOTE_LINE_NUMBER (fn_begin) == NOTE_INSN_FUNCTION_BEG)
break;
emit_insns_after (seq, fn_begin);
}
/* Call back from expand_function_end to know where we should put
the call to unwind_sjlj_unregister_libfunc if needed. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
void
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
sjlj_emit_function_exit_after (after)
rtx after;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
cfun->eh->sjlj_exit_after = after;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
static void
sjlj_emit_function_exit ()
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
rtx seq;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
start_sequence ();
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
emit_library_call (unwind_sjlj_unregister_libfunc, LCT_NORMAL, VOIDmode,
1, XEXP (cfun->eh->sjlj_fc, 0), Pmode);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
seq = get_insns ();
end_sequence ();
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* ??? Really this can be done in any block at loop level 0 that
post-dominates all can_throw_internal instructions. This is
the last possible moment. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
emit_insns_after (seq, cfun->eh->sjlj_exit_after);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
static void
sjlj_emit_dispatch_table (dispatch_label, lp_info)
rtx dispatch_label;
struct sjlj_lp_info *lp_info;
{
int i, first_reachable;
rtx mem, dispatch, seq, fc;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
fc = cfun->eh->sjlj_fc;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
start_sequence ();
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
emit_label (dispatch_label);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
#ifndef DONT_USE_BUILTIN_SETJMP
expand_builtin_setjmp_receiver (dispatch_label);
#endif
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Load up dispatch index, exc_ptr and filter values from the
function context. */
mem = adjust_address (fc, TYPE_MODE (integer_type_node),
sjlj_fc_call_site_ofs);
dispatch = copy_to_reg (mem);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
mem = adjust_address (fc, word_mode, sjlj_fc_data_ofs);
if (word_mode != Pmode)
{
#ifdef POINTERS_EXTEND_UNSIGNED
mem = convert_memory_address (Pmode, mem);
#else
mem = convert_to_mode (Pmode, mem, 0);
#endif
}
emit_move_insn (cfun->eh->exc_ptr, mem);
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
mem = adjust_address (fc, word_mode, sjlj_fc_data_ofs + UNITS_PER_WORD);
emit_move_insn (cfun->eh->filter, mem);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Jump to one of the directly reachable regions. */
/* ??? This really ought to be using a switch statement. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
first_reachable = 0;
for (i = cfun->eh->last_region_number; i > 0; --i)
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (! lp_info[i].directly_reachable)
continue;
if (! first_reachable)
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
first_reachable = i;
continue;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
emit_cmp_and_jump_insns (dispatch, GEN_INT (lp_info[i].dispatch_index),
EQ, NULL_RTX, TYPE_MODE (integer_type_node), 0,
cfun->eh->region_array[i]->post_landing_pad);
}
seq = get_insns ();
end_sequence ();
emit_insns_before (seq, (cfun->eh->region_array[first_reachable]
->post_landing_pad));
}
static void
sjlj_build_landing_pads ()
{
struct sjlj_lp_info *lp_info;
lp_info = (struct sjlj_lp_info *) xcalloc (cfun->eh->last_region_number + 1,
sizeof (struct sjlj_lp_info));
if (sjlj_find_directly_reachable_regions (lp_info))
{
rtx dispatch_label = gen_label_rtx ();
cfun->eh->sjlj_fc
= assign_stack_local (TYPE_MODE (sjlj_fc_type_node),
int_size_in_bytes (sjlj_fc_type_node),
TYPE_ALIGN (sjlj_fc_type_node));
sjlj_assign_call_site_values (dispatch_label, lp_info);
sjlj_mark_call_sites (lp_info);
sjlj_emit_function_enter (dispatch_label);
sjlj_emit_dispatch_table (dispatch_label, lp_info);
sjlj_emit_function_exit ();
}
free (lp_info);
}
void
finish_eh_generation ()
{
/* Nothing to do if no regions created. */
if (cfun->eh->region_tree == NULL)
return;
/* The object here is to provide find_basic_blocks with detailed
information (via reachable_handlers) on how exception control
flows within the function. In this first pass, we can include
type information garnered from ERT_THROW and ERT_ALLOWED_EXCEPTIONS
regions, and hope that it will be useful in deleting unreachable
handlers. Subsequently, we will generate landing pads which will
connect many of the handlers, and then type information will not
be effective. Still, this is a win over previous implementations. */
rebuild_jump_labels (get_insns ());
find_basic_blocks (get_insns (), max_reg_num (), 0);
cleanup_cfg (CLEANUP_PRE_LOOP);
/* These registers are used by the landing pads. Make sure they
have been generated. */
get_exception_pointer (cfun);
get_exception_filter (cfun);
/* Construct the landing pads. */
assign_filter_values ();
build_post_landing_pads ();
connect_post_landing_pads ();
if (USING_SJLJ_EXCEPTIONS)
sjlj_build_landing_pads ();
else
dw2_build_landing_pads ();
cfun->eh->built_landing_pads = 1;
/* We've totally changed the CFG. Start over. */
find_exception_handler_labels ();
rebuild_jump_labels (get_insns ());
find_basic_blocks (get_insns (), max_reg_num (), 0);
cleanup_cfg (CLEANUP_PRE_LOOP);
}
Gcc 3.1.0 pre-release from the FSF anoncvs repo on 9-May-2002 15:57:15 EDT.
2002-05-09 20:02:13 +00:00
static hashval_t
ehl_hash (pentry)
const PTR pentry;
{
struct ehl_map_entry *entry = (struct ehl_map_entry *) pentry;
/* 2^32 * ((sqrt(5) - 1) / 2) */
const hashval_t scaled_golden_ratio = 0x9e3779b9;
return CODE_LABEL_NUMBER (entry->label) * scaled_golden_ratio;
}
static int
ehl_eq (pentry, pdata)
const PTR pentry;
const PTR pdata;
{
struct ehl_map_entry *entry = (struct ehl_map_entry *) pentry;
struct ehl_map_entry *data = (struct ehl_map_entry *) pdata;
return entry->label == data->label;
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* This section handles removing dead code for flow. */
Gcc 3.1.0 pre-release from the FSF anoncvs repo on 9-May-2002 15:57:15 EDT.
2002-05-09 20:02:13 +00:00
/* Remove LABEL from exception_handler_label_map. */
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
static void
remove_exception_handler_label (label)
rtx label;
{
Gcc 3.1.0 pre-release from the FSF anoncvs repo on 9-May-2002 15:57:15 EDT.
2002-05-09 20:02:13 +00:00
struct ehl_map_entry **slot, tmp;
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
Gcc 3.1.0 pre-release from the FSF anoncvs repo on 9-May-2002 15:57:15 EDT.
2002-05-09 20:02:13 +00:00
/* If exception_handler_label_map was not built yet,
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
there is nothing to do. */
Gcc 3.1.0 pre-release from the FSF anoncvs repo on 9-May-2002 15:57:15 EDT.
2002-05-09 20:02:13 +00:00
if (exception_handler_label_map == NULL)
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
return;
Gcc 3.1.0 pre-release from the FSF anoncvs repo on 9-May-2002 15:57:15 EDT.
2002-05-09 20:02:13 +00:00
tmp.label = label;
slot = (struct ehl_map_entry **)
htab_find_slot (exception_handler_label_map, &tmp, NO_INSERT);
if (! slot)
abort ();
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
Gcc 3.1.0 pre-release from the FSF anoncvs repo on 9-May-2002 15:57:15 EDT.
2002-05-09 20:02:13 +00:00
htab_clear_slot (exception_handler_label_map, (void **) slot);
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
}
/* Splice REGION from the region tree etc. */
static void
remove_eh_handler (region)
struct eh_region *region;
{
Gcc 3.1.0 pre-release from the FSF anoncvs repo on 9-May-2002 15:57:15 EDT.
2002-05-09 20:02:13 +00:00
struct eh_region **pp, **pp_start, *p, *outer, *inner;
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
rtx lab;
/* For the benefit of efficiently handling REG_EH_REGION notes,
replace this region in the region array with its containing
region. Note that previous region deletions may result in
Gcc 3.1.0 pre-release from the FSF anoncvs repo on 9-May-2002 15:57:15 EDT.
2002-05-09 20:02:13 +00:00
multiple copies of this region in the array, so we have a
list of alternate numbers by which we are known. */
outer = region->outer;
cfun->eh->region_array[region->region_number] = outer;
if (region->aka)
{
int i;
EXECUTE_IF_SET_IN_BITMAP (region->aka, 0, i,
{ cfun->eh->region_array[i] = outer; });
}
if (outer)
{
if (!outer->aka)
outer->aka = BITMAP_XMALLOC ();
if (region->aka)
bitmap_a_or_b (outer->aka, outer->aka, region->aka);
bitmap_set_bit (outer->aka, region->region_number);
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (cfun->eh->built_landing_pads)
lab = region->landing_pad;
else
lab = region->label;
if (lab)
remove_exception_handler_label (lab);
Gcc 3.1.0 pre-release from the FSF anoncvs repo on 9-May-2002 15:57:15 EDT.
2002-05-09 20:02:13 +00:00
if (outer)
pp_start = &outer->inner;
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
else
Gcc 3.1.0 pre-release from the FSF anoncvs repo on 9-May-2002 15:57:15 EDT.
2002-05-09 20:02:13 +00:00
pp_start = &cfun->eh->region_tree;
for (pp = pp_start, p = *pp; p != region; pp = &p->next_peer, p = *pp)
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
continue;
Gcc 3.1.0 pre-release from the FSF anoncvs repo on 9-May-2002 15:57:15 EDT.
2002-05-09 20:02:13 +00:00
*pp = region->next_peer;
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
Gcc 3.1.0 pre-release from the FSF anoncvs repo on 9-May-2002 15:57:15 EDT.
2002-05-09 20:02:13 +00:00
inner = region->inner;
if (inner)
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
{
Gcc 3.1.0 pre-release from the FSF anoncvs repo on 9-May-2002 15:57:15 EDT.
2002-05-09 20:02:13 +00:00
for (p = inner; p->next_peer ; p = p->next_peer)
p->outer = outer;
p->outer = outer;
p->next_peer = *pp_start;
*pp_start = inner;
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
}
if (region->type == ERT_CATCH)
{
struct eh_region *try, *next, *prev;
for (try = region->next_peer;
try->type == ERT_CATCH;
try = try->next_peer)
continue;
if (try->type != ERT_TRY)
abort ();
next = region->u.catch.next_catch;
prev = region->u.catch.prev_catch;
if (next)
next->u.catch.prev_catch = prev;
else
try->u.try.last_catch = prev;
if (prev)
prev->u.catch.next_catch = next;
else
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
try->u.try.catch = next;
if (! next)
remove_eh_handler (try);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Gcc 3.1.0 pre-release from the FSF anoncvs repo on 9-May-2002 15:57:15 EDT.
2002-05-09 20:02:13 +00:00
free_region (region);
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
}
/* LABEL heads a basic block that is about to be deleted. If this
label corresponds to an exception region, we may be able to
delete the region. */
void
maybe_remove_eh_handler (label)
rtx label;
{
Gcc 3.1.0 pre-release from the FSF anoncvs repo on 9-May-2002 15:57:15 EDT.
2002-05-09 20:02:13 +00:00
struct ehl_map_entry **slot, tmp;
struct eh_region *region;
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* ??? After generating landing pads, it's not so simple to determine
if the region data is completely unused. One must examine the
landing pad and the post landing pad, and whether an inner try block
is referencing the catch handlers directly. */
if (cfun->eh->built_landing_pads)
return;
Gcc 3.1.0 pre-release from the FSF anoncvs repo on 9-May-2002 15:57:15 EDT.
2002-05-09 20:02:13 +00:00
tmp.label = label;
slot = (struct ehl_map_entry **)
htab_find_slot (exception_handler_label_map, &tmp, NO_INSERT);
if (! slot)
return;
region = (*slot)->region;
if (! region)
return;
/* Flow will want to remove MUST_NOT_THROW regions as unreachable
because there is no path to the fallback call to terminate.
But the region continues to affect call-site data until there
are no more contained calls, which we don't see here. */
if (region->type == ERT_MUST_NOT_THROW)
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
{
Gcc 3.1.0 pre-release from the FSF anoncvs repo on 9-May-2002 15:57:15 EDT.
2002-05-09 20:02:13 +00:00
htab_clear_slot (exception_handler_label_map, (void **) slot);
region->label = NULL_RTX;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Gcc 3.1.0 pre-release from the FSF anoncvs repo on 9-May-2002 15:57:15 EDT.
2002-05-09 20:02:13 +00:00
else
remove_eh_handler (region);
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Gcc 3.1.0 pre-release from the FSF anoncvs repo on 9-May-2002 15:57:15 EDT.
2002-05-09 20:02:13 +00:00
/* Invokes CALLBACK for every exception handler label. Only used by old
loop hackery; should not be used by new code. */
void
for_each_eh_label (callback)
void (*callback) PARAMS ((rtx));
{
htab_traverse (exception_handler_label_map, for_each_eh_label_1,
(void *)callback);
}
static int
for_each_eh_label_1 (pentry, data)
PTR *pentry;
PTR data;
{
struct ehl_map_entry *entry = *(struct ehl_map_entry **)pentry;
void (*callback) PARAMS ((rtx)) = (void (*) PARAMS ((rtx))) data;
(*callback) (entry->label);
return 1;
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* This section describes CFG exception edges for flow. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* For communicating between calls to reachable_next_level. */
struct reachable_info
{
tree types_caught;
tree types_allowed;
rtx handlers;
};
/* A subroutine of reachable_next_level. Return true if TYPE, or a
base class of TYPE, is in HANDLED. */
static int
check_handled (handled, type)
tree handled, type;
{
tree t;
/* We can check for exact matches without front-end help. */
if (! lang_eh_type_covers)
{
for (t = handled; t ; t = TREE_CHAIN (t))
if (TREE_VALUE (t) == type)
return 1;
}
else
{
for (t = handled; t ; t = TREE_CHAIN (t))
if ((*lang_eh_type_covers) (TREE_VALUE (t), type))
return 1;
}
return 0;
}
/* A subroutine of reachable_next_level. If we are collecting a list
of handlers, add one. After landing pad generation, reference
it instead of the handlers themselves. Further, the handlers are
all wired together, so by referencing one, we've got them all.
Before landing pad generation we reference each handler individually.
LP_REGION contains the landing pad; REGION is the handler. */
static void
add_reachable_handler (info, lp_region, region)
struct reachable_info *info;
struct eh_region *lp_region;
struct eh_region *region;
{
if (! info)
return;
if (cfun->eh->built_landing_pads)
{
if (! info->handlers)
info->handlers = alloc_INSN_LIST (lp_region->landing_pad, NULL_RTX);
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
else
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
info->handlers = alloc_INSN_LIST (region->label, info->handlers);
}
/* Process one level of exception regions for reachability.
If TYPE_THROWN is non-null, then it is the *exact* type being
propagated. If INFO is non-null, then collect handler labels
and caught/allowed type information between invocations. */
static enum reachable_code
reachable_next_level (region, type_thrown, info)
struct eh_region *region;
tree type_thrown;
struct reachable_info *info;
{
switch (region->type)
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
case ERT_CLEANUP:
/* Before landing-pad generation, we model control flow
directly to the individual handlers. In this way we can
see that catch handler types may shadow one another. */
add_reachable_handler (info, region, region);
return RNL_MAYBE_CAUGHT;
case ERT_TRY:
{
struct eh_region *c;
enum reachable_code ret = RNL_NOT_CAUGHT;
for (c = region->u.try.catch; c ; c = c->u.catch.next_catch)
{
/* A catch-all handler ends the search. */
/* ??? _Unwind_ForcedUnwind will want outer cleanups
to be run as well. */
if (c->u.catch.type_list == NULL)
{
add_reachable_handler (info, region, c);
return RNL_CAUGHT;
}
if (type_thrown)
{
/* If we have at least one type match, end the search. */
tree tp_node = c->u.catch.type_list;
for (; tp_node; tp_node = TREE_CHAIN (tp_node))
{
tree type = TREE_VALUE (tp_node);
if (type == type_thrown
|| (lang_eh_type_covers
&& (*lang_eh_type_covers) (type, type_thrown)))
{
add_reachable_handler (info, region, c);
return RNL_CAUGHT;
}
}
/* If we have definitive information of a match failure,
the catch won't trigger. */
if (lang_eh_type_covers)
return RNL_NOT_CAUGHT;
}
/* At this point, we either don't know what type is thrown or
don't have front-end assistance to help deciding if it is
covered by one of the types in the list for this region.
We'd then like to add this region to the list of reachable
handlers since it is indeed potentially reachable based on the
information we have.
Actually, this handler is for sure not reachable if all the
types it matches have already been caught. That is, it is only
potentially reachable if at least one of the types it catches
has not been previously caught. */
if (! info)
ret = RNL_MAYBE_CAUGHT;
else
{
tree tp_node = c->u.catch.type_list;
bool maybe_reachable = false;
/* Compute the potential reachability of this handler and
update the list of types caught at the same time. */
for (; tp_node; tp_node = TREE_CHAIN (tp_node))
{
tree type = TREE_VALUE (tp_node);
if (! check_handled (info->types_caught, type))
{
info->types_caught
= tree_cons (NULL, type, info->types_caught);
maybe_reachable = true;
}
}
if (maybe_reachable)
{
add_reachable_handler (info, region, c);
/* ??? If the catch type is a base class of every allowed
type, then we know we can stop the search. */
ret = RNL_MAYBE_CAUGHT;
}
}
}
return ret;
}
case ERT_ALLOWED_EXCEPTIONS:
/* An empty list of types definitely ends the search. */
if (region->u.allowed.type_list == NULL_TREE)
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
add_reachable_handler (info, region, region);
return RNL_CAUGHT;
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Collect a list of lists of allowed types for use in detecting
when a catch may be transformed into a catch-all. */
if (info)
info->types_allowed = tree_cons (NULL_TREE,
region->u.allowed.type_list,
info->types_allowed);
/* If we have definitive information about the type hierarchy,
then we can tell if the thrown type will pass through the
filter. */
if (type_thrown && lang_eh_type_covers)
{
if (check_handled (region->u.allowed.type_list, type_thrown))
return RNL_NOT_CAUGHT;
else
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
add_reachable_handler (info, region, region);
return RNL_CAUGHT;
}
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
add_reachable_handler (info, region, region);
return RNL_MAYBE_CAUGHT;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
case ERT_CATCH:
/* Catch regions are handled by their controling try region. */
return RNL_NOT_CAUGHT;
case ERT_MUST_NOT_THROW:
/* Here we end our search, since no exceptions may propagate.
If we've touched down at some landing pad previous, then the
explicit function call we generated may be used. Otherwise
the call is made by the runtime. */
if (info && info->handlers)
{
add_reachable_handler (info, region, region);
return RNL_CAUGHT;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
else
return RNL_BLOCKED;
case ERT_THROW:
case ERT_FIXUP:
case ERT_UNKNOWN:
/* Shouldn't see these here. */
break;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
abort ();
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Retrieve a list of labels of exception handlers which can be
reached by a given insn. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
rtx
reachable_handlers (insn)
rtx insn;
{
struct reachable_info info;
struct eh_region *region;
tree type_thrown;
int region_number;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (GET_CODE (insn) == JUMP_INSN
&& GET_CODE (PATTERN (insn)) == RESX)
region_number = XINT (PATTERN (insn), 0);
else
{
rtx note = find_reg_note (insn, REG_EH_REGION, NULL_RTX);
if (!note || INTVAL (XEXP (note, 0)) <= 0)
return NULL;
region_number = INTVAL (XEXP (note, 0));
}
memset (&info, 0, sizeof (info));
region = cfun->eh->region_array[region_number];
type_thrown = NULL_TREE;
if (GET_CODE (insn) == JUMP_INSN
&& GET_CODE (PATTERN (insn)) == RESX)
{
/* A RESX leaves a region instead of entering it. Thus the
region itself may have been deleted out from under us. */
if (region == NULL)
return NULL;
region = region->outer;
}
else if (region->type == ERT_THROW)
{
type_thrown = region->u.throw.type;
region = region->outer;
}
for (; region; region = region->outer)
if (reachable_next_level (region, type_thrown, &info) >= RNL_CAUGHT)
break;
return info.handlers;
}
/* Determine if the given INSN can throw an exception that is caught
within the function. */
bool
can_throw_internal (insn)
rtx insn;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
struct eh_region *region;
tree type_thrown;
rtx note;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (! INSN_P (insn))
return false;
if (GET_CODE (insn) == INSN
&& GET_CODE (PATTERN (insn)) == SEQUENCE)
insn = XVECEXP (PATTERN (insn), 0, 0);
if (GET_CODE (insn) == CALL_INSN
&& GET_CODE (PATTERN (insn)) == CALL_PLACEHOLDER)
{
int i;
for (i = 0; i < 3; ++i)
{
rtx sub = XEXP (PATTERN (insn), i);
for (; sub ; sub = NEXT_INSN (sub))
if (can_throw_internal (sub))
return true;
}
return false;
}
/* Every insn that might throw has an EH_REGION note. */
note = find_reg_note (insn, REG_EH_REGION, NULL_RTX);
if (!note || INTVAL (XEXP (note, 0)) <= 0)
return false;
region = cfun->eh->region_array[INTVAL (XEXP (note, 0))];
type_thrown = NULL_TREE;
if (region->type == ERT_THROW)
{
type_thrown = region->u.throw.type;
region = region->outer;
}
/* If this exception is ignored by each and every containing region,
then control passes straight out. The runtime may handle some
regions, which also do not require processing internally. */
for (; region; region = region->outer)
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
enum reachable_code how = reachable_next_level (region, type_thrown, 0);
if (how == RNL_BLOCKED)
return false;
if (how != RNL_NOT_CAUGHT)
return true;
}
return false;
}
/* Determine if the given INSN can throw an exception that is
visible outside the function. */
bool
can_throw_external (insn)
rtx insn;
{
struct eh_region *region;
tree type_thrown;
rtx note;
if (! INSN_P (insn))
return false;
if (GET_CODE (insn) == INSN
&& GET_CODE (PATTERN (insn)) == SEQUENCE)
insn = XVECEXP (PATTERN (insn), 0, 0);
if (GET_CODE (insn) == CALL_INSN
&& GET_CODE (PATTERN (insn)) == CALL_PLACEHOLDER)
{
int i;
for (i = 0; i < 3; ++i)
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
rtx sub = XEXP (PATTERN (insn), i);
for (; sub ; sub = NEXT_INSN (sub))
if (can_throw_external (sub))
return true;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
return false;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
note = find_reg_note (insn, REG_EH_REGION, NULL_RTX);
if (!note)
{
/* Calls (and trapping insns) without notes are outside any
exception handling region in this function. We have to
assume it might throw. Given that the front end and middle
ends mark known NOTHROW functions, this isn't so wildly
inaccurate. */
return (GET_CODE (insn) == CALL_INSN
|| (flag_non_call_exceptions
&& may_trap_p (PATTERN (insn))));
}
if (INTVAL (XEXP (note, 0)) <= 0)
return false;
region = cfun->eh->region_array[INTVAL (XEXP (note, 0))];
type_thrown = NULL_TREE;
if (region->type == ERT_THROW)
{
type_thrown = region->u.throw.type;
region = region->outer;
}
/* If the exception is caught or blocked by any containing region,
then it is not seen by any calling function. */
for (; region ; region = region->outer)
if (reachable_next_level (region, type_thrown, NULL) >= RNL_CAUGHT)
return false;
return true;
}
/* True if nothing in this function can throw outside this function. */
bool
nothrow_function_p ()
{
rtx insn;
if (! flag_exceptions)
return true;
for (insn = get_insns (); insn; insn = NEXT_INSN (insn))
if (can_throw_external (insn))
return false;
for (insn = current_function_epilogue_delay_list; insn;
insn = XEXP (insn, 1))
if (can_throw_external (insn))
return false;
return true;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Various hooks for unwind library. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
/* Do any necessary initialization to access arbitrary stack frames.
On the SPARC, this means flushing the register windows. */
void
expand_builtin_unwind_init ()
{
/* Set this so all the registers get saved in our frame; we need to be
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
able to copy the saved values for any registers from frames we unwind. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
current_function_has_nonlocal_label = 1;
#ifdef SETUP_FRAME_ADDRESSES
SETUP_FRAME_ADDRESSES ();
#endif
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
rtx
expand_builtin_eh_return_data_regno (arglist)
tree arglist;
{
tree which = TREE_VALUE (arglist);
unsigned HOST_WIDE_INT iwhich;
if (TREE_CODE (which) != INTEGER_CST)
{
error ("argument of `__builtin_eh_return_regno' must be constant");
return constm1_rtx;
}
iwhich = tree_low_cst (which, 1);
iwhich = EH_RETURN_DATA_REGNO (iwhich);
if (iwhich == INVALID_REGNUM)
return constm1_rtx;
#ifdef DWARF_FRAME_REGNUM
iwhich = DWARF_FRAME_REGNUM (iwhich);
#else
iwhich = DBX_REGISTER_NUMBER (iwhich);
#endif
return GEN_INT (iwhich);
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
/* Given a value extracted from the return address register or stack slot,
return the actual address encoded in that value. */
rtx
expand_builtin_extract_return_addr (addr_tree)
tree addr_tree;
{
rtx addr = expand_expr (addr_tree, NULL_RTX, Pmode, 0);
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* First mask out any unwanted bits. */
#ifdef MASK_RETURN_ADDR
Gcc 3.1.0 pre-release from the FSF anoncvs repo on 9-May-2002 15:57:15 EDT.
2002-05-09 20:02:13 +00:00
expand_and (Pmode, addr, MASK_RETURN_ADDR, addr);
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
#endif
/* Then adjust to find the real return address. */
#if defined (RETURN_ADDR_OFFSET)
addr = plus_constant (addr, RETURN_ADDR_OFFSET);
#endif
return addr;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
/* Given an actual address in addr_tree, do any necessary encoding
and return the value to be stored in the return address register or
stack slot so the epilogue will return to that address. */
rtx
expand_builtin_frob_return_addr (addr_tree)
tree addr_tree;
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
rtx addr = expand_expr (addr_tree, NULL_RTX, ptr_mode, 0);
#ifdef POINTERS_EXTEND_UNSIGNED
if (GET_MODE (addr) != Pmode)
addr = convert_memory_address (Pmode, addr);
#endif
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
#ifdef RETURN_ADDR_OFFSET
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
addr = force_reg (Pmode, addr);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
addr = plus_constant (addr, -RETURN_ADDR_OFFSET);
#endif
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
return addr;
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Set up the epilogue with the magic bits we'll need to return to the
exception handler. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
void
expand_builtin_eh_return (stackadj_tree, handler_tree)
tree stackadj_tree, handler_tree;
{
rtx stackadj, handler;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
stackadj = expand_expr (stackadj_tree, cfun->eh->ehr_stackadj, VOIDmode, 0);
handler = expand_expr (handler_tree, cfun->eh->ehr_handler, VOIDmode, 0);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
#ifdef POINTERS_EXTEND_UNSIGNED
if (GET_MODE (stackadj) != Pmode)
stackadj = convert_memory_address (Pmode, stackadj);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (GET_MODE (handler) != Pmode)
handler = convert_memory_address (Pmode, handler);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
#endif
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (! cfun->eh->ehr_label)
{
cfun->eh->ehr_stackadj = copy_to_reg (stackadj);
cfun->eh->ehr_handler = copy_to_reg (handler);
cfun->eh->ehr_label = gen_label_rtx ();
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
else
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (stackadj != cfun->eh->ehr_stackadj)
emit_move_insn (cfun->eh->ehr_stackadj, stackadj);
if (handler != cfun->eh->ehr_handler)
emit_move_insn (cfun->eh->ehr_handler, handler);
}
emit_jump (cfun->eh->ehr_label);
}
void
expand_eh_return ()
{
rtx sa, ra, around_label;
if (! cfun->eh->ehr_label)
return;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
sa = EH_RETURN_STACKADJ_RTX;
if (! sa)
{
error ("__builtin_eh_return not supported on this target");
return;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
current_function_calls_eh_return = 1;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
around_label = gen_label_rtx ();
emit_move_insn (sa, const0_rtx);
emit_jump (around_label);
emit_label (cfun->eh->ehr_label);
clobber_return_register ();
#ifdef HAVE_eh_return
if (HAVE_eh_return)
emit_insn (gen_eh_return (cfun->eh->ehr_stackadj, cfun->eh->ehr_handler));
else
#endif
{
ra = EH_RETURN_HANDLER_RTX;
if (! ra)
{
error ("__builtin_eh_return not supported on this target");
ra = gen_reg_rtx (Pmode);
}
emit_move_insn (sa, cfun->eh->ehr_stackadj);
emit_move_insn (ra, cfun->eh->ehr_handler);
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
emit_label (around_label);
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* In the following functions, we represent entries in the action table
as 1-based indices. Special cases are:
0: null action record, non-null landing pad; implies cleanups
-1: null action record, null landing pad; implies no action
-2: no call-site entry; implies must_not_throw
-3: we have yet to process outer regions
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
Further, no special cases apply to the "next" field of the record.
For next, 0 means end of list. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
struct action_record
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
int offset;
int filter;
int next;
};
static int
action_record_eq (pentry, pdata)
const PTR pentry;
const PTR pdata;
{
const struct action_record *entry = (const struct action_record *) pentry;
const struct action_record *data = (const struct action_record *) pdata;
return entry->filter == data->filter && entry->next == data->next;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
static hashval_t
action_record_hash (pentry)
const PTR pentry;
{
const struct action_record *entry = (const struct action_record *) pentry;
return entry->next * 1009 + entry->filter;
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
static int
add_action_record (ar_hash, filter, next)
htab_t ar_hash;
int filter, next;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
struct action_record **slot, *new, tmp;
tmp.filter = filter;
tmp.next = next;
slot = (struct action_record **) htab_find_slot (ar_hash, &tmp, INSERT);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if ((new = *slot) == NULL)
{
new = (struct action_record *) xmalloc (sizeof (*new));
new->offset = VARRAY_ACTIVE_SIZE (cfun->eh->action_record_data) + 1;
new->filter = filter;
new->next = next;
*slot = new;
/* The filter value goes in untouched. The link to the next
record is a "self-relative" byte offset, or zero to indicate
that there is no next record. So convert the absolute 1 based
indices we've been carrying around into a displacement. */
push_sleb128 (&cfun->eh->action_record_data, filter);
if (next)
next -= VARRAY_ACTIVE_SIZE (cfun->eh->action_record_data) + 1;
push_sleb128 (&cfun->eh->action_record_data, next);
}
return new->offset;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
static int
collect_one_action_chain (ar_hash, region)
htab_t ar_hash;
struct eh_region *region;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
struct eh_region *c;
int next;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* If we've reached the top of the region chain, then we have
no actions, and require no landing pad. */
if (region == NULL)
return -1;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
switch (region->type)
{
case ERT_CLEANUP:
/* A cleanup adds a zero filter to the beginning of the chain, but
there are special cases to look out for. If there are *only*
cleanups along a path, then it compresses to a zero action.
Further, if there are multiple cleanups along a path, we only
need to represent one of them, as that is enough to trigger
entry to the landing pad at runtime. */
next = collect_one_action_chain (ar_hash, region->outer);
if (next <= 0)
return 0;
for (c = region->outer; c ; c = c->outer)
if (c->type == ERT_CLEANUP)
return next;
return add_action_record (ar_hash, 0, next);
case ERT_TRY:
/* Process the associated catch regions in reverse order.
If there's a catch-all handler, then we don't need to
search outer regions. Use a magic -3 value to record
that we haven't done the outer search. */
next = -3;
for (c = region->u.try.last_catch; c ; c = c->u.catch.prev_catch)
{
if (c->u.catch.type_list == NULL)
{
/* Retrieve the filter from the head of the filter list
where we have stored it (see assign_filter_values). */
int filter
= TREE_INT_CST_LOW (TREE_VALUE (c->u.catch.filter_list));
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
next = add_action_record (ar_hash, filter, 0);
}
else
{
/* Once the outer search is done, trigger an action record for
each filter we have. */
tree flt_node;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (next == -3)
{
next = collect_one_action_chain (ar_hash, region->outer);
/* If there is no next action, terminate the chain. */
if (next == -1)
next = 0;
/* If all outer actions are cleanups or must_not_throw,
we'll have no action record for it, since we had wanted
to encode these states in the call-site record directly.
Add a cleanup action to the chain to catch these. */
else if (next <= 0)
next = add_action_record (ar_hash, 0, 0);
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
flt_node = c->u.catch.filter_list;
for (; flt_node; flt_node = TREE_CHAIN (flt_node))
{
int filter = TREE_INT_CST_LOW (TREE_VALUE (flt_node));
next = add_action_record (ar_hash, filter, next);
}
}
}
return next;
case ERT_ALLOWED_EXCEPTIONS:
/* An exception specification adds its filter to the
beginning of the chain. */
next = collect_one_action_chain (ar_hash, region->outer);
return add_action_record (ar_hash, region->u.allowed.filter,
next < 0 ? 0 : next);
case ERT_MUST_NOT_THROW:
/* A must-not-throw region with no inner handlers or cleanups
requires no call-site entry. Note that this differs from
the no handler or cleanup case in that we do require an lsda
to be generated. Return a magic -2 value to record this. */
return -2;
case ERT_CATCH:
case ERT_THROW:
/* CATCH regions are handled in TRY above. THROW regions are
for optimization information only and produce no output. */
return collect_one_action_chain (ar_hash, region->outer);
default:
abort ();
}
}
static int
add_call_site (landing_pad, action)
rtx landing_pad;
int action;
{
struct call_site_record *data = cfun->eh->call_site_data;
int used = cfun->eh->call_site_data_used;
int size = cfun->eh->call_site_data_size;
if (used >= size)
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
size = (size ? size * 2 : 64);
data = (struct call_site_record *)
xrealloc (data, sizeof (*data) * size);
cfun->eh->call_site_data = data;
cfun->eh->call_site_data_size = size;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
data[used].landing_pad = landing_pad;
data[used].action = action;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
cfun->eh->call_site_data_used = used + 1;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
return used + call_site_base;
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Turn REG_EH_REGION notes back into NOTE_INSN_EH_REGION notes.
The new note numbers will not refer to region numbers, but
instead to call site entries. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
void
convert_to_eh_region_ranges ()
{
rtx insn, iter, note;
htab_t ar_hash;
int last_action = -3;
rtx last_action_insn = NULL_RTX;
rtx last_landing_pad = NULL_RTX;
rtx first_no_action_insn = NULL_RTX;
int call_site = 0;
if (USING_SJLJ_EXCEPTIONS || cfun->eh->region_tree == NULL)
return;
VARRAY_UCHAR_INIT (cfun->eh->action_record_data, 64, "action_record_data");
ar_hash = htab_create (31, action_record_hash, action_record_eq, free);
for (iter = get_insns (); iter ; iter = NEXT_INSN (iter))
if (INSN_P (iter))
{
struct eh_region *region;
int this_action;
rtx this_landing_pad;
insn = iter;
if (GET_CODE (insn) == INSN
&& GET_CODE (PATTERN (insn)) == SEQUENCE)
insn = XVECEXP (PATTERN (insn), 0, 0);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
note = find_reg_note (insn, REG_EH_REGION, NULL_RTX);
if (!note)
{
if (! (GET_CODE (insn) == CALL_INSN
|| (flag_non_call_exceptions
&& may_trap_p (PATTERN (insn)))))
continue;
this_action = -1;
region = NULL;
}
else
{
if (INTVAL (XEXP (note, 0)) <= 0)
continue;
region = cfun->eh->region_array[INTVAL (XEXP (note, 0))];
this_action = collect_one_action_chain (ar_hash, region);
}
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Existence of catch handlers, or must-not-throw regions
implies that an lsda is needed (even if empty). */
if (this_action != -1)
cfun->uses_eh_lsda = 1;
/* Delay creation of region notes for no-action regions
until we're sure that an lsda will be required. */
else if (last_action == -3)
{
first_no_action_insn = iter;
last_action = -1;
}
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Cleanups and handlers may share action chains but not
landing pads. Collect the landing pad for this region. */
if (this_action >= 0)
{
struct eh_region *o;
for (o = region; ! o->landing_pad ; o = o->outer)
continue;
this_landing_pad = o->landing_pad;
}
else
this_landing_pad = NULL_RTX;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Differing actions or landing pads implies a change in call-site
info, which implies some EH_REGION note should be emitted. */
if (last_action != this_action
|| last_landing_pad != this_landing_pad)
{
/* If we'd not seen a previous action (-3) or the previous
action was must-not-throw (-2), then we do not need an
end note. */
if (last_action >= -1)
{
/* If we delayed the creation of the begin, do it now. */
if (first_no_action_insn)
{
call_site = add_call_site (NULL_RTX, 0);
note = emit_note_before (NOTE_INSN_EH_REGION_BEG,
first_no_action_insn);
NOTE_EH_HANDLER (note) = call_site;
first_no_action_insn = NULL_RTX;
}
note = emit_note_after (NOTE_INSN_EH_REGION_END,
last_action_insn);
NOTE_EH_HANDLER (note) = call_site;
}
/* If the new action is must-not-throw, then no region notes
are created. */
if (this_action >= -1)
{
call_site = add_call_site (this_landing_pad,
this_action < 0 ? 0 : this_action);
note = emit_note_before (NOTE_INSN_EH_REGION_BEG, iter);
NOTE_EH_HANDLER (note) = call_site;
}
last_action = this_action;
last_landing_pad = this_landing_pad;
}
last_action_insn = iter;
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (last_action >= -1 && ! first_no_action_insn)
{
note = emit_note_after (NOTE_INSN_EH_REGION_END, last_action_insn);
NOTE_EH_HANDLER (note) = call_site;
}
htab_delete (ar_hash);
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
static void
push_uleb128 (data_area, value)
varray_type *data_area;
unsigned int value;
{
do
{
unsigned char byte = value & 0x7f;
value >>= 7;
if (value)
byte |= 0x80;
VARRAY_PUSH_UCHAR (*data_area, byte);
}
while (value);
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
static void
push_sleb128 (data_area, value)
varray_type *data_area;
int value;
{
unsigned char byte;
int more;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
do
{
byte = value & 0x7f;
value >>= 7;
more = ! ((value == 0 && (byte & 0x40) == 0)
|| (value == -1 && (byte & 0x40) != 0));
if (more)
byte |= 0x80;
VARRAY_PUSH_UCHAR (*data_area, byte);
}
while (more);
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
#ifndef HAVE_AS_LEB128
static int
dw2_size_of_call_site_table ()
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
int n = cfun->eh->call_site_data_used;
int size = n * (4 + 4 + 4);
int i;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
for (i = 0; i < n; ++i)
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
struct call_site_record *cs = &cfun->eh->call_site_data[i];
size += size_of_uleb128 (cs->action);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
return size;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
static int
sjlj_size_of_call_site_table ()
{
int n = cfun->eh->call_site_data_used;
int size = 0;
int i;
for (i = 0; i < n; ++i)
{
struct call_site_record *cs = &cfun->eh->call_site_data[i];
size += size_of_uleb128 (INTVAL (cs->landing_pad));
size += size_of_uleb128 (cs->action);
}
return size;
}
#endif
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
static void
dw2_output_call_site_table ()
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
const char *const function_start_lab
= IDENTIFIER_POINTER (current_function_func_begin_label);
int n = cfun->eh->call_site_data_used;
int i;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
for (i = 0; i < n; ++i)
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
struct call_site_record *cs = &cfun->eh->call_site_data[i];
char reg_start_lab[32];
char reg_end_lab[32];
char landing_pad_lab[32];
ASM_GENERATE_INTERNAL_LABEL (reg_start_lab, "LEHB", call_site_base + i);
ASM_GENERATE_INTERNAL_LABEL (reg_end_lab, "LEHE", call_site_base + i);
if (cs->landing_pad)
ASM_GENERATE_INTERNAL_LABEL (landing_pad_lab, "L",
CODE_LABEL_NUMBER (cs->landing_pad));
/* ??? Perhaps use insn length scaling if the assembler supports
generic arithmetic. */
/* ??? Perhaps use attr_length to choose data1 or data2 instead of
data4 if the function is small enough. */
#ifdef HAVE_AS_LEB128
dw2_asm_output_delta_uleb128 (reg_start_lab, function_start_lab,
"region %d start", i);
dw2_asm_output_delta_uleb128 (reg_end_lab, reg_start_lab,
"length");
if (cs->landing_pad)
dw2_asm_output_delta_uleb128 (landing_pad_lab, function_start_lab,
"landing pad");
else
dw2_asm_output_data_uleb128 (0, "landing pad");
#else
dw2_asm_output_delta (4, reg_start_lab, function_start_lab,
"region %d start", i);
dw2_asm_output_delta (4, reg_end_lab, reg_start_lab, "length");
if (cs->landing_pad)
dw2_asm_output_delta (4, landing_pad_lab, function_start_lab,
"landing pad");
else
dw2_asm_output_data (4, 0, "landing pad");
#endif
dw2_asm_output_data_uleb128 (cs->action, "action");
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
call_site_base += n;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
static void
sjlj_output_call_site_table ()
{
int n = cfun->eh->call_site_data_used;
int i;
for (i = 0; i < n; ++i)
{
struct call_site_record *cs = &cfun->eh->call_site_data[i];
dw2_asm_output_data_uleb128 (INTVAL (cs->landing_pad),
"region %d landing pad", i);
dw2_asm_output_data_uleb128 (cs->action, "action");
}
call_site_base += n;
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
void
output_function_exception_table ()
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
int tt_format, cs_format, lp_format, i, n;
#ifdef HAVE_AS_LEB128
char ttype_label[32];
char cs_after_size_label[32];
char cs_end_label[32];
#else
int call_site_len;
#endif
int have_tt_data;
int funcdef_number;
int tt_format_size = 0;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Not all functions need anything. */
if (! cfun->uses_eh_lsda)
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
return;
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
funcdef_number = (USING_SJLJ_EXCEPTIONS
? sjlj_funcdef_number
: current_funcdef_number);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
#ifdef IA64_UNWIND_INFO
fputs ("\t.personality\t", asm_out_file);
output_addr_const (asm_out_file, eh_personality_libfunc);
fputs ("\n\t.handlerdata\n", asm_out_file);
/* Note that varasm still thinks we're in the function's code section.
The ".endp" directive that will immediately follow will take us back. */
#else
(*targetm.asm_out.exception_section) ();
#endif
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
have_tt_data = (VARRAY_ACTIVE_SIZE (cfun->eh->ttype_data) > 0
|| VARRAY_ACTIVE_SIZE (cfun->eh->ehspec_data) > 0);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Indicate the format of the @TType entries. */
if (! have_tt_data)
tt_format = DW_EH_PE_omit;
else
{
tt_format = ASM_PREFERRED_EH_DATA_FORMAT (/*code=*/0, /*global=*/1);
#ifdef HAVE_AS_LEB128
ASM_GENERATE_INTERNAL_LABEL (ttype_label, "LLSDATT", funcdef_number);
#endif
tt_format_size = size_of_encoded_value (tt_format);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
assemble_align (tt_format_size * BITS_PER_UNIT);
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, "LLSDA", funcdef_number);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* The LSDA header. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Indicate the format of the landing pad start pointer. An omitted
field implies @LPStart == @Start. */
/* Currently we always put @LPStart == @Start. This field would
be most useful in moving the landing pads completely out of
line to another section, but it could also be used to minimize
the size of uleb128 landing pad offsets. */
lp_format = DW_EH_PE_omit;
dw2_asm_output_data (1, lp_format, "@LPStart format (%s)",
eh_data_format_name (lp_format));
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* @LPStart pointer would go here. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
dw2_asm_output_data (1, tt_format, "@TType format (%s)",
eh_data_format_name (tt_format));
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
#ifndef HAVE_AS_LEB128
if (USING_SJLJ_EXCEPTIONS)
call_site_len = sjlj_size_of_call_site_table ();
else
call_site_len = dw2_size_of_call_site_table ();
#endif
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* A pc-relative 4-byte displacement to the @TType data. */
if (have_tt_data)
{
#ifdef HAVE_AS_LEB128
char ttype_after_disp_label[32];
ASM_GENERATE_INTERNAL_LABEL (ttype_after_disp_label, "LLSDATTD",
funcdef_number);
dw2_asm_output_delta_uleb128 (ttype_label, ttype_after_disp_label,
"@TType base offset");
ASM_OUTPUT_LABEL (asm_out_file, ttype_after_disp_label);
#else
/* Ug. Alignment queers things. */
unsigned int before_disp, after_disp, last_disp, disp;
before_disp = 1 + 1;
after_disp = (1 + size_of_uleb128 (call_site_len)
+ call_site_len
+ VARRAY_ACTIVE_SIZE (cfun->eh->action_record_data)
+ (VARRAY_ACTIVE_SIZE (cfun->eh->ttype_data)
* tt_format_size));
disp = after_disp;
do
{
unsigned int disp_size, pad;
last_disp = disp;
disp_size = size_of_uleb128 (disp);
pad = before_disp + disp_size + after_disp;
if (pad % tt_format_size)
pad = tt_format_size - (pad % tt_format_size);
else
pad = 0;
disp = after_disp + pad;
}
while (disp != last_disp);
dw2_asm_output_data_uleb128 (disp, "@TType base offset");
#endif
}
/* Indicate the format of the call-site offsets. */
#ifdef HAVE_AS_LEB128
cs_format = DW_EH_PE_uleb128;
#else
cs_format = DW_EH_PE_udata4;
#endif
dw2_asm_output_data (1, cs_format, "call-site format (%s)",
eh_data_format_name (cs_format));
#ifdef HAVE_AS_LEB128
ASM_GENERATE_INTERNAL_LABEL (cs_after_size_label, "LLSDACSB",
funcdef_number);
ASM_GENERATE_INTERNAL_LABEL (cs_end_label, "LLSDACSE",
funcdef_number);
dw2_asm_output_delta_uleb128 (cs_end_label, cs_after_size_label,
"Call-site table length");
ASM_OUTPUT_LABEL (asm_out_file, cs_after_size_label);
if (USING_SJLJ_EXCEPTIONS)
sjlj_output_call_site_table ();
else
dw2_output_call_site_table ();
ASM_OUTPUT_LABEL (asm_out_file, cs_end_label);
#else
dw2_asm_output_data_uleb128 (call_site_len,"Call-site table length");
if (USING_SJLJ_EXCEPTIONS)
sjlj_output_call_site_table ();
else
dw2_output_call_site_table ();
#endif
/* ??? Decode and interpret the data for flag_debug_asm. */
n = VARRAY_ACTIVE_SIZE (cfun->eh->action_record_data);
for (i = 0; i < n; ++i)
dw2_asm_output_data (1, VARRAY_UCHAR (cfun->eh->action_record_data, i),
(i ? NULL : "Action record table"));
if (have_tt_data)
assemble_align (tt_format_size * BITS_PER_UNIT);
i = VARRAY_ACTIVE_SIZE (cfun->eh->ttype_data);
while (i-- > 0)
{
tree type = VARRAY_TREE (cfun->eh->ttype_data, i);
rtx value;
if (type == NULL_TREE)
type = integer_zero_node;
else
type = lookup_type_for_runtime (type);
value = expand_expr (type, NULL_RTX, VOIDmode, EXPAND_INITIALIZER);
if (tt_format == DW_EH_PE_absptr || tt_format == DW_EH_PE_aligned)
assemble_integer (value, tt_format_size,
tt_format_size * BITS_PER_UNIT, 1);
else
dw2_asm_output_encoded_addr_rtx (tt_format, value, NULL);
}
#ifdef HAVE_AS_LEB128
if (have_tt_data)
ASM_OUTPUT_LABEL (asm_out_file, ttype_label);
#endif
/* ??? Decode and interpret the data for flag_debug_asm. */
n = VARRAY_ACTIVE_SIZE (cfun->eh->ehspec_data);
for (i = 0; i < n; ++i)
dw2_asm_output_data (1, VARRAY_UCHAR (cfun->eh->ehspec_data, i),
(i ? NULL : "Exception specification table"));
function_section (current_function_decl);
if (USING_SJLJ_EXCEPTIONS)
sjlj_funcdef_number += 1;
}
Reference in New Issue Copy Permalink