905 lines
24 KiB
C
905 lines
24 KiB
C
/* Dwarf2 assembler output helper routines.
|
||
Copyright (C) 2001, 2002 Free Software Foundation, Inc.
|
||
|
||
This file is part of GCC.
|
||
|
||
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.
|
||
|
||
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.
|
||
|
||
You should have received a copy of the GNU General Public License
|
||
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. */
|
||
|
||
|
||
#include "config.h"
|
||
#include "system.h"
|
||
#include "flags.h"
|
||
#include "tree.h"
|
||
#include "rtl.h"
|
||
#include "output.h"
|
||
#include "target.h"
|
||
#include "dwarf2asm.h"
|
||
#include "dwarf2.h"
|
||
#include "splay-tree.h"
|
||
#include "ggc.h"
|
||
#include "tm_p.h"
|
||
|
||
|
||
/* How to start an assembler comment. */
|
||
#ifndef ASM_COMMENT_START
|
||
#define ASM_COMMENT_START ";#"
|
||
#endif
|
||
|
||
|
||
/* Output an unaligned integer with the given value and size. Prefer not
|
||
to print a newline, since the caller may want to add a comment. */
|
||
|
||
void
|
||
dw2_assemble_integer (size, x)
|
||
int size;
|
||
rtx x;
|
||
{
|
||
const char *op = integer_asm_op (size, FALSE);
|
||
|
||
if (op)
|
||
{
|
||
fputs (op, asm_out_file);
|
||
if (GET_CODE (x) == CONST_INT)
|
||
fprintf (asm_out_file, HOST_WIDE_INT_PRINT_HEX, INTVAL (x));
|
||
else
|
||
output_addr_const (asm_out_file, x);
|
||
}
|
||
else
|
||
assemble_integer (x, size, BITS_PER_UNIT, 1);
|
||
}
|
||
|
||
|
||
/* Output an immediate constant in a given size. */
|
||
|
||
void
|
||
dw2_asm_output_data VPARAMS ((int size, unsigned HOST_WIDE_INT value,
|
||
const char *comment, ...))
|
||
{
|
||
VA_OPEN (ap, comment);
|
||
VA_FIXEDARG (ap, int, size);
|
||
VA_FIXEDARG (ap, unsigned HOST_WIDE_INT, value);
|
||
VA_FIXEDARG (ap, const char *, comment);
|
||
|
||
if (size * 8 < HOST_BITS_PER_WIDE_INT)
|
||
value &= ~(~(unsigned HOST_WIDE_INT) 0 << (size * 8));
|
||
|
||
dw2_assemble_integer (size, GEN_INT (value));
|
||
|
||
if (flag_debug_asm && comment)
|
||
{
|
||
fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START);
|
||
vfprintf (asm_out_file, comment, ap);
|
||
}
|
||
fputc ('\n', asm_out_file);
|
||
|
||
VA_CLOSE (ap);
|
||
}
|
||
|
||
/* Output the difference between two symbols in a given size. */
|
||
/* ??? There appear to be assemblers that do not like such
|
||
subtraction, but do support ASM_SET_OP. It's unfortunately
|
||
impossible to do here, since the ASM_SET_OP for the difference
|
||
symbol must appear after both symbols are defined. */
|
||
|
||
void
|
||
dw2_asm_output_delta VPARAMS ((int size, const char *lab1, const char *lab2,
|
||
const char *comment, ...))
|
||
{
|
||
VA_OPEN (ap, comment);
|
||
VA_FIXEDARG (ap, int, size);
|
||
VA_FIXEDARG (ap, const char *, lab1);
|
||
VA_FIXEDARG (ap, const char *, lab2);
|
||
VA_FIXEDARG (ap, const char *, comment);
|
||
|
||
dw2_assemble_integer (size,
|
||
gen_rtx_MINUS (Pmode,
|
||
gen_rtx_SYMBOL_REF (Pmode, lab1),
|
||
gen_rtx_SYMBOL_REF (Pmode, lab2)));
|
||
|
||
if (flag_debug_asm && comment)
|
||
{
|
||
fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START);
|
||
vfprintf (asm_out_file, comment, ap);
|
||
}
|
||
fputc ('\n', asm_out_file);
|
||
|
||
VA_CLOSE (ap);
|
||
}
|
||
|
||
/* Output a section-relative reference to a label. In general this
|
||
can only be done for debugging symbols. E.g. on most targets with
|
||
the GNU linker, this is accomplished with a direct reference and
|
||
the knowledge that the debugging section will be placed at VMA 0.
|
||
Some targets have special relocations for this that we must use. */
|
||
|
||
void
|
||
dw2_asm_output_offset VPARAMS ((int size, const char *label,
|
||
const char *comment, ...))
|
||
{
|
||
VA_OPEN (ap, comment);
|
||
VA_FIXEDARG (ap, int, size);
|
||
VA_FIXEDARG (ap, const char *, label);
|
||
VA_FIXEDARG (ap, const char *, comment);
|
||
|
||
#ifdef ASM_OUTPUT_DWARF_OFFSET
|
||
ASM_OUTPUT_DWARF_OFFSET (asm_out_file, size, label);
|
||
#else
|
||
dw2_assemble_integer (size, gen_rtx_SYMBOL_REF (Pmode, label));
|
||
#endif
|
||
|
||
if (flag_debug_asm && comment)
|
||
{
|
||
fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START);
|
||
vfprintf (asm_out_file, comment, ap);
|
||
}
|
||
fputc ('\n', asm_out_file);
|
||
|
||
VA_CLOSE (ap);
|
||
}
|
||
|
||
/* Output a self-relative reference to a label, possibly in a
|
||
different section or object file. */
|
||
|
||
void
|
||
dw2_asm_output_pcrel VPARAMS ((int size ATTRIBUTE_UNUSED,
|
||
const char *label ATTRIBUTE_UNUSED,
|
||
const char *comment, ...))
|
||
{
|
||
VA_OPEN (ap, comment);
|
||
VA_FIXEDARG (ap, int, size);
|
||
VA_FIXEDARG (ap, const char *, label);
|
||
VA_FIXEDARG (ap, const char *, comment);
|
||
|
||
#ifdef ASM_OUTPUT_DWARF_PCREL
|
||
ASM_OUTPUT_DWARF_PCREL (asm_out_file, size, label);
|
||
#else
|
||
dw2_assemble_integer (size,
|
||
gen_rtx_MINUS (Pmode,
|
||
gen_rtx_SYMBOL_REF (Pmode, label),
|
||
pc_rtx));
|
||
#endif
|
||
|
||
if (flag_debug_asm && comment)
|
||
{
|
||
fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START);
|
||
vfprintf (asm_out_file, comment, ap);
|
||
}
|
||
fputc ('\n', asm_out_file);
|
||
|
||
VA_CLOSE (ap);
|
||
}
|
||
|
||
/* Output an absolute reference to a label. */
|
||
|
||
void
|
||
dw2_asm_output_addr VPARAMS ((int size, const char *label,
|
||
const char *comment, ...))
|
||
{
|
||
VA_OPEN (ap, comment);
|
||
VA_FIXEDARG (ap, int, size);
|
||
VA_FIXEDARG (ap, const char *, label);
|
||
VA_FIXEDARG (ap, const char *, comment);
|
||
|
||
dw2_assemble_integer (size, gen_rtx_SYMBOL_REF (Pmode, label));
|
||
|
||
if (flag_debug_asm && comment)
|
||
{
|
||
fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START);
|
||
vfprintf (asm_out_file, comment, ap);
|
||
}
|
||
fputc ('\n', asm_out_file);
|
||
|
||
VA_CLOSE (ap);
|
||
}
|
||
|
||
/* Similar, but use an RTX expression instead of a text label. */
|
||
|
||
void
|
||
dw2_asm_output_addr_rtx VPARAMS ((int size, rtx addr,
|
||
const char *comment, ...))
|
||
{
|
||
VA_OPEN (ap, comment);
|
||
VA_FIXEDARG (ap, int, size);
|
||
VA_FIXEDARG (ap, rtx, addr);
|
||
VA_FIXEDARG (ap, const char *, comment);
|
||
|
||
dw2_assemble_integer (size, addr);
|
||
|
||
if (flag_debug_asm && comment)
|
||
{
|
||
fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START);
|
||
vfprintf (asm_out_file, comment, ap);
|
||
}
|
||
fputc ('\n', asm_out_file);
|
||
|
||
VA_CLOSE (ap);
|
||
}
|
||
|
||
void
|
||
dw2_asm_output_nstring VPARAMS ((const char *str, size_t orig_len,
|
||
const char *comment, ...))
|
||
{
|
||
size_t i, len;
|
||
|
||
VA_OPEN (ap, comment);
|
||
VA_FIXEDARG (ap, const char *, str);
|
||
VA_FIXEDARG (ap, size_t, orig_len);
|
||
VA_FIXEDARG (ap, const char *, comment);
|
||
|
||
len = orig_len;
|
||
|
||
if (len == (size_t) -1)
|
||
len = strlen (str);
|
||
|
||
if (flag_debug_asm && comment)
|
||
{
|
||
fputs ("\t.ascii \"", asm_out_file);
|
||
for (i = 0; i < len; i++)
|
||
{
|
||
int c = str[i];
|
||
if (c == '\"' || c == '\\')
|
||
fputc ('\\', asm_out_file);
|
||
if (ISPRINT(c))
|
||
fputc (c, asm_out_file);
|
||
else
|
||
fprintf (asm_out_file, "\\%o", c);
|
||
}
|
||
fprintf (asm_out_file, "\\0\"\t%s ", ASM_COMMENT_START);
|
||
vfprintf (asm_out_file, comment, ap);
|
||
fputc ('\n', asm_out_file);
|
||
}
|
||
else
|
||
{
|
||
/* If an explicit length was given, we can't assume there
|
||
is a null termination in the string buffer. */
|
||
if (orig_len == (size_t) -1)
|
||
len += 1;
|
||
ASM_OUTPUT_ASCII (asm_out_file, str, len);
|
||
if (orig_len != (size_t) -1)
|
||
assemble_integer (const0_rtx, 1, BITS_PER_UNIT, 1);
|
||
}
|
||
|
||
VA_CLOSE (ap);
|
||
}
|
||
|
||
|
||
/* Return the size of an unsigned LEB128 quantity. */
|
||
|
||
int
|
||
size_of_uleb128 (value)
|
||
unsigned HOST_WIDE_INT value;
|
||
{
|
||
int size = 0, byte;
|
||
|
||
do
|
||
{
|
||
byte = (value & 0x7f);
|
||
value >>= 7;
|
||
size += 1;
|
||
}
|
||
while (value != 0);
|
||
|
||
return size;
|
||
}
|
||
|
||
/* Return the size of a signed LEB128 quantity. */
|
||
|
||
int
|
||
size_of_sleb128 (value)
|
||
HOST_WIDE_INT value;
|
||
{
|
||
int size = 0, byte;
|
||
|
||
do
|
||
{
|
||
byte = (value & 0x7f);
|
||
value >>= 7;
|
||
size += 1;
|
||
}
|
||
while (!((value == 0 && (byte & 0x40) == 0)
|
||
|| (value == -1 && (byte & 0x40) != 0)));
|
||
|
||
return size;
|
||
}
|
||
|
||
/* Given an encoding, return the number of bytes the format occupies.
|
||
This is only defined for fixed-size encodings, and so does not
|
||
include leb128. */
|
||
|
||
int
|
||
size_of_encoded_value (encoding)
|
||
int encoding;
|
||
{
|
||
if (encoding == DW_EH_PE_omit)
|
||
return 0;
|
||
|
||
switch (encoding & 0x07)
|
||
{
|
||
case DW_EH_PE_absptr:
|
||
return POINTER_SIZE / BITS_PER_UNIT;
|
||
case DW_EH_PE_udata2:
|
||
return 2;
|
||
case DW_EH_PE_udata4:
|
||
return 4;
|
||
case DW_EH_PE_udata8:
|
||
return 8;
|
||
}
|
||
abort ();
|
||
}
|
||
|
||
/* Yield a name for a given pointer encoding. */
|
||
|
||
const char *
|
||
eh_data_format_name (format)
|
||
int format;
|
||
{
|
||
#if HAVE_DESIGNATED_INITIALIZERS
|
||
#define S(p, v) [p] = v,
|
||
#else
|
||
#define S(p, v) case p: return v;
|
||
#endif
|
||
|
||
#if HAVE_DESIGNATED_INITIALIZERS
|
||
__extension__ static const char * const format_names[256] = {
|
||
#else
|
||
switch (format) {
|
||
#endif
|
||
|
||
S(DW_EH_PE_absptr, "absolute")
|
||
S(DW_EH_PE_omit, "omit")
|
||
S(DW_EH_PE_aligned, "aligned absolute")
|
||
|
||
S(DW_EH_PE_uleb128, "uleb128")
|
||
S(DW_EH_PE_udata2, "udata2")
|
||
S(DW_EH_PE_udata4, "udata4")
|
||
S(DW_EH_PE_udata8, "udata8")
|
||
S(DW_EH_PE_sleb128, "sleb128")
|
||
S(DW_EH_PE_sdata2, "sdata2")
|
||
S(DW_EH_PE_sdata4, "sdata4")
|
||
S(DW_EH_PE_sdata8, "sdata8")
|
||
|
||
S(DW_EH_PE_absptr | DW_EH_PE_pcrel, "pcrel")
|
||
S(DW_EH_PE_uleb128 | DW_EH_PE_pcrel, "pcrel uleb128")
|
||
S(DW_EH_PE_udata2 | DW_EH_PE_pcrel, "pcrel udata2")
|
||
S(DW_EH_PE_udata4 | DW_EH_PE_pcrel, "pcrel udata4")
|
||
S(DW_EH_PE_udata8 | DW_EH_PE_pcrel, "pcrel udata8")
|
||
S(DW_EH_PE_sleb128 | DW_EH_PE_pcrel, "pcrel sleb128")
|
||
S(DW_EH_PE_sdata2 | DW_EH_PE_pcrel, "pcrel sdata2")
|
||
S(DW_EH_PE_sdata4 | DW_EH_PE_pcrel, "pcrel sdata4")
|
||
S(DW_EH_PE_sdata8 | DW_EH_PE_pcrel, "pcrel sdata8")
|
||
|
||
S(DW_EH_PE_absptr | DW_EH_PE_textrel, "textrel")
|
||
S(DW_EH_PE_uleb128 | DW_EH_PE_textrel, "textrel uleb128")
|
||
S(DW_EH_PE_udata2 | DW_EH_PE_textrel, "textrel udata2")
|
||
S(DW_EH_PE_udata4 | DW_EH_PE_textrel, "textrel udata4")
|
||
S(DW_EH_PE_udata8 | DW_EH_PE_textrel, "textrel udata8")
|
||
S(DW_EH_PE_sleb128 | DW_EH_PE_textrel, "textrel sleb128")
|
||
S(DW_EH_PE_sdata2 | DW_EH_PE_textrel, "textrel sdata2")
|
||
S(DW_EH_PE_sdata4 | DW_EH_PE_textrel, "textrel sdata4")
|
||
S(DW_EH_PE_sdata8 | DW_EH_PE_textrel, "textrel sdata8")
|
||
|
||
S(DW_EH_PE_absptr | DW_EH_PE_datarel, "datarel")
|
||
S(DW_EH_PE_uleb128 | DW_EH_PE_datarel, "datarel uleb128")
|
||
S(DW_EH_PE_udata2 | DW_EH_PE_datarel, "datarel udata2")
|
||
S(DW_EH_PE_udata4 | DW_EH_PE_datarel, "datarel udata4")
|
||
S(DW_EH_PE_udata8 | DW_EH_PE_datarel, "datarel udata8")
|
||
S(DW_EH_PE_sleb128 | DW_EH_PE_datarel, "datarel sleb128")
|
||
S(DW_EH_PE_sdata2 | DW_EH_PE_datarel, "datarel sdata2")
|
||
S(DW_EH_PE_sdata4 | DW_EH_PE_datarel, "datarel sdata4")
|
||
S(DW_EH_PE_sdata8 | DW_EH_PE_datarel, "datarel sdata8")
|
||
|
||
S(DW_EH_PE_absptr | DW_EH_PE_funcrel, "funcrel")
|
||
S(DW_EH_PE_uleb128 | DW_EH_PE_funcrel, "funcrel uleb128")
|
||
S(DW_EH_PE_udata2 | DW_EH_PE_funcrel, "funcrel udata2")
|
||
S(DW_EH_PE_udata4 | DW_EH_PE_funcrel, "funcrel udata4")
|
||
S(DW_EH_PE_udata8 | DW_EH_PE_funcrel, "funcrel udata8")
|
||
S(DW_EH_PE_sleb128 | DW_EH_PE_funcrel, "funcrel sleb128")
|
||
S(DW_EH_PE_sdata2 | DW_EH_PE_funcrel, "funcrel sdata2")
|
||
S(DW_EH_PE_sdata4 | DW_EH_PE_funcrel, "funcrel sdata4")
|
||
S(DW_EH_PE_sdata8 | DW_EH_PE_funcrel, "funcrel sdata8")
|
||
|
||
S(DW_EH_PE_indirect | DW_EH_PE_absptr | DW_EH_PE_pcrel,
|
||
"indirect pcrel")
|
||
S(DW_EH_PE_indirect | DW_EH_PE_uleb128 | DW_EH_PE_pcrel,
|
||
"indirect pcrel uleb128")
|
||
S(DW_EH_PE_indirect | DW_EH_PE_udata2 | DW_EH_PE_pcrel,
|
||
"indirect pcrel udata2")
|
||
S(DW_EH_PE_indirect | DW_EH_PE_udata4 | DW_EH_PE_pcrel,
|
||
"indirect pcrel udata4")
|
||
S(DW_EH_PE_indirect | DW_EH_PE_udata8 | DW_EH_PE_pcrel,
|
||
"indirect pcrel udata8")
|
||
S(DW_EH_PE_indirect | DW_EH_PE_sleb128 | DW_EH_PE_pcrel,
|
||
"indirect pcrel sleb128")
|
||
S(DW_EH_PE_indirect | DW_EH_PE_sdata2 | DW_EH_PE_pcrel,
|
||
"indirect pcrel sdata2")
|
||
S(DW_EH_PE_indirect | DW_EH_PE_sdata4 | DW_EH_PE_pcrel,
|
||
"indirect pcrel sdata4")
|
||
S(DW_EH_PE_indirect | DW_EH_PE_sdata8 | DW_EH_PE_pcrel,
|
||
"indirect pcrel sdata8")
|
||
|
||
S(DW_EH_PE_indirect | DW_EH_PE_absptr | DW_EH_PE_textrel,
|
||
"indirect textrel")
|
||
S(DW_EH_PE_indirect | DW_EH_PE_uleb128 | DW_EH_PE_textrel,
|
||
"indirect textrel uleb128")
|
||
S(DW_EH_PE_indirect | DW_EH_PE_udata2 | DW_EH_PE_textrel,
|
||
"indirect textrel udata2")
|
||
S(DW_EH_PE_indirect | DW_EH_PE_udata4 | DW_EH_PE_textrel,
|
||
"indirect textrel udata4")
|
||
S(DW_EH_PE_indirect | DW_EH_PE_udata8 | DW_EH_PE_textrel,
|
||
"indirect textrel udata8")
|
||
S(DW_EH_PE_indirect | DW_EH_PE_sleb128 | DW_EH_PE_textrel,
|
||
"indirect textrel sleb128")
|
||
S(DW_EH_PE_indirect | DW_EH_PE_sdata2 | DW_EH_PE_textrel,
|
||
"indirect textrel sdata2")
|
||
S(DW_EH_PE_indirect | DW_EH_PE_sdata4 | DW_EH_PE_textrel,
|
||
"indirect textrel sdata4")
|
||
S(DW_EH_PE_indirect | DW_EH_PE_sdata8 | DW_EH_PE_textrel,
|
||
"indirect textrel sdata8")
|
||
|
||
S(DW_EH_PE_indirect | DW_EH_PE_absptr | DW_EH_PE_datarel,
|
||
"indirect datarel")
|
||
S(DW_EH_PE_indirect | DW_EH_PE_uleb128 | DW_EH_PE_datarel,
|
||
"indirect datarel uleb128")
|
||
S(DW_EH_PE_indirect | DW_EH_PE_udata2 | DW_EH_PE_datarel,
|
||
"indirect datarel udata2")
|
||
S(DW_EH_PE_indirect | DW_EH_PE_udata4 | DW_EH_PE_datarel,
|
||
"indirect datarel udata4")
|
||
S(DW_EH_PE_indirect | DW_EH_PE_udata8 | DW_EH_PE_datarel,
|
||
"indirect datarel udata8")
|
||
S(DW_EH_PE_indirect | DW_EH_PE_sleb128 | DW_EH_PE_datarel,
|
||
"indirect datarel sleb128")
|
||
S(DW_EH_PE_indirect | DW_EH_PE_sdata2 | DW_EH_PE_datarel,
|
||
"indirect datarel sdata2")
|
||
S(DW_EH_PE_indirect | DW_EH_PE_sdata4 | DW_EH_PE_datarel,
|
||
"indirect datarel sdata4")
|
||
S(DW_EH_PE_indirect | DW_EH_PE_sdata8 | DW_EH_PE_datarel,
|
||
"indirect datarel sdata8")
|
||
|
||
S(DW_EH_PE_indirect | DW_EH_PE_absptr | DW_EH_PE_funcrel,
|
||
"indirect funcrel")
|
||
S(DW_EH_PE_indirect | DW_EH_PE_uleb128 | DW_EH_PE_funcrel,
|
||
"indirect funcrel uleb128")
|
||
S(DW_EH_PE_indirect | DW_EH_PE_udata2 | DW_EH_PE_funcrel,
|
||
"indirect funcrel udata2")
|
||
S(DW_EH_PE_indirect | DW_EH_PE_udata4 | DW_EH_PE_funcrel,
|
||
"indirect funcrel udata4")
|
||
S(DW_EH_PE_indirect | DW_EH_PE_udata8 | DW_EH_PE_funcrel,
|
||
"indirect funcrel udata8")
|
||
S(DW_EH_PE_indirect | DW_EH_PE_sleb128 | DW_EH_PE_funcrel,
|
||
"indirect funcrel sleb128")
|
||
S(DW_EH_PE_indirect | DW_EH_PE_sdata2 | DW_EH_PE_funcrel,
|
||
"indirect funcrel sdata2")
|
||
S(DW_EH_PE_indirect | DW_EH_PE_sdata4 | DW_EH_PE_funcrel,
|
||
"indirect funcrel sdata4")
|
||
S(DW_EH_PE_indirect | DW_EH_PE_sdata8 | DW_EH_PE_funcrel,
|
||
"indirect funcrel sdata8")
|
||
|
||
#if HAVE_DESIGNATED_INITIALIZERS
|
||
};
|
||
|
||
if (format < 0 || format > 0xff || format_names[format] == NULL)
|
||
abort ();
|
||
return format_names[format];
|
||
#else
|
||
}
|
||
abort ();
|
||
#endif
|
||
}
|
||
|
||
/* Output an unsigned LEB128 quantity. */
|
||
|
||
void
|
||
dw2_asm_output_data_uleb128 VPARAMS ((unsigned HOST_WIDE_INT value,
|
||
const char *comment, ...))
|
||
{
|
||
VA_OPEN (ap, comment);
|
||
VA_FIXEDARG (ap, unsigned HOST_WIDE_INT, value);
|
||
VA_FIXEDARG (ap, const char *, comment);
|
||
|
||
#ifdef HAVE_AS_LEB128
|
||
fputs ("\t.uleb128 ", asm_out_file);
|
||
fprintf (asm_out_file, HOST_WIDE_INT_PRINT_HEX, value);
|
||
|
||
if (flag_debug_asm && comment)
|
||
{
|
||
fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START);
|
||
vfprintf (asm_out_file, comment, ap);
|
||
}
|
||
#else
|
||
{
|
||
unsigned HOST_WIDE_INT work = value;
|
||
const char *byte_op = targetm.asm_out.byte_op;
|
||
|
||
if (byte_op)
|
||
fputs (byte_op, asm_out_file);
|
||
do
|
||
{
|
||
int byte = (work & 0x7f);
|
||
work >>= 7;
|
||
if (work != 0)
|
||
/* More bytes to follow. */
|
||
byte |= 0x80;
|
||
|
||
if (byte_op)
|
||
{
|
||
fprintf (asm_out_file, "0x%x", byte);
|
||
if (work != 0)
|
||
fputc (',', asm_out_file);
|
||
}
|
||
else
|
||
assemble_integer (GEN_INT (byte), 1, BITS_PER_UNIT, 1);
|
||
}
|
||
while (work != 0);
|
||
|
||
if (flag_debug_asm)
|
||
{
|
||
fprintf (asm_out_file, "\t%s uleb128 ", ASM_COMMENT_START);
|
||
fprintf (asm_out_file, HOST_WIDE_INT_PRINT_HEX, value);
|
||
if (comment)
|
||
{
|
||
fputs ("; ", asm_out_file);
|
||
vfprintf (asm_out_file, comment, ap);
|
||
}
|
||
}
|
||
}
|
||
#endif
|
||
fputc ('\n', asm_out_file);
|
||
|
||
VA_CLOSE (ap);
|
||
}
|
||
|
||
/* Output an signed LEB128 quantity. */
|
||
|
||
void
|
||
dw2_asm_output_data_sleb128 VPARAMS ((HOST_WIDE_INT value,
|
||
const char *comment, ...))
|
||
{
|
||
VA_OPEN (ap, comment);
|
||
VA_FIXEDARG (ap, HOST_WIDE_INT, value);
|
||
VA_FIXEDARG (ap, const char *, comment);
|
||
|
||
#ifdef HAVE_AS_LEB128
|
||
fputs ("\t.sleb128 ", asm_out_file);
|
||
fprintf (asm_out_file, HOST_WIDE_INT_PRINT_DEC, value);
|
||
|
||
if (flag_debug_asm && comment)
|
||
{
|
||
fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START);
|
||
vfprintf (asm_out_file, comment, ap);
|
||
}
|
||
#else
|
||
{
|
||
HOST_WIDE_INT work = value;
|
||
int more, byte;
|
||
const char *byte_op = targetm.asm_out.byte_op;
|
||
|
||
if (byte_op)
|
||
fputs (byte_op, asm_out_file);
|
||
do
|
||
{
|
||
byte = (work & 0x7f);
|
||
/* arithmetic shift */
|
||
work >>= 7;
|
||
more = !((work == 0 && (byte & 0x40) == 0)
|
||
|| (work == -1 && (byte & 0x40) != 0));
|
||
if (more)
|
||
byte |= 0x80;
|
||
|
||
if (byte_op)
|
||
{
|
||
fprintf (asm_out_file, "0x%x", byte);
|
||
if (more)
|
||
fputc (',', asm_out_file);
|
||
}
|
||
else
|
||
assemble_integer (GEN_INT (byte), 1, BITS_PER_UNIT, 1);
|
||
}
|
||
while (more);
|
||
|
||
if (flag_debug_asm)
|
||
{
|
||
fprintf (asm_out_file, "\t%s sleb128 ", ASM_COMMENT_START);
|
||
fprintf (asm_out_file, HOST_WIDE_INT_PRINT_DEC, value);
|
||
if (comment)
|
||
{
|
||
fputs ("; ", asm_out_file);
|
||
vfprintf (asm_out_file, comment, ap);
|
||
}
|
||
}
|
||
}
|
||
#endif
|
||
fputc ('\n', asm_out_file);
|
||
|
||
VA_CLOSE (ap);
|
||
}
|
||
|
||
void
|
||
dw2_asm_output_delta_uleb128 VPARAMS ((const char *lab1 ATTRIBUTE_UNUSED,
|
||
const char *lab2 ATTRIBUTE_UNUSED,
|
||
const char *comment, ...))
|
||
{
|
||
VA_OPEN (ap, comment);
|
||
VA_FIXEDARG (ap, const char *, lab1);
|
||
VA_FIXEDARG (ap, const char *, lab2);
|
||
VA_FIXEDARG (ap, const char *, comment);
|
||
|
||
#ifdef HAVE_AS_LEB128
|
||
fputs ("\t.uleb128 ", asm_out_file);
|
||
assemble_name (asm_out_file, lab1);
|
||
fputc ('-', asm_out_file);
|
||
assemble_name (asm_out_file, lab2);
|
||
#else
|
||
abort ();
|
||
#endif
|
||
|
||
if (flag_debug_asm && comment)
|
||
{
|
||
fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START);
|
||
vfprintf (asm_out_file, comment, ap);
|
||
}
|
||
fputc ('\n', asm_out_file);
|
||
|
||
VA_CLOSE (ap);
|
||
}
|
||
|
||
void
|
||
dw2_asm_output_delta_sleb128 VPARAMS ((const char *lab1 ATTRIBUTE_UNUSED,
|
||
const char *lab2 ATTRIBUTE_UNUSED,
|
||
const char *comment, ...))
|
||
{
|
||
VA_OPEN (ap, comment);
|
||
VA_FIXEDARG (ap, const char *, lab1);
|
||
VA_FIXEDARG (ap, const char *, lab2);
|
||
VA_FIXEDARG (ap, const char *, comment);
|
||
|
||
#ifdef HAVE_AS_LEB128
|
||
fputs ("\t.sleb128 ", asm_out_file);
|
||
assemble_name (asm_out_file, lab1);
|
||
fputc ('-', asm_out_file);
|
||
assemble_name (asm_out_file, lab2);
|
||
#else
|
||
abort ();
|
||
#endif
|
||
|
||
if (flag_debug_asm && comment)
|
||
{
|
||
fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START);
|
||
vfprintf (asm_out_file, comment, ap);
|
||
}
|
||
fputc ('\n', asm_out_file);
|
||
|
||
VA_CLOSE (ap);
|
||
}
|
||
|
||
static int mark_indirect_pool_entry PARAMS ((splay_tree_node, void *));
|
||
static void mark_indirect_pool PARAMS ((PTR arg));
|
||
static rtx dw2_force_const_mem PARAMS ((rtx));
|
||
static int dw2_output_indirect_constant_1 PARAMS ((splay_tree_node, void *));
|
||
|
||
static splay_tree indirect_pool;
|
||
|
||
#if defined(HAVE_GAS_HIDDEN) && defined(SUPPORTS_ONE_ONLY)
|
||
# define USE_LINKONCE_INDIRECT 1
|
||
#else
|
||
# define USE_LINKONCE_INDIRECT 0
|
||
#endif
|
||
|
||
/* Mark all indirect constants for GC. */
|
||
|
||
static int
|
||
mark_indirect_pool_entry (node, data)
|
||
splay_tree_node node;
|
||
void* data ATTRIBUTE_UNUSED;
|
||
{
|
||
ggc_mark_nonnull_tree ((tree) node->value);
|
||
return 0;
|
||
}
|
||
|
||
/* Mark all indirect constants for GC. */
|
||
|
||
static void
|
||
mark_indirect_pool (arg)
|
||
PTR arg ATTRIBUTE_UNUSED;
|
||
{
|
||
splay_tree_foreach (indirect_pool, mark_indirect_pool_entry, NULL);
|
||
}
|
||
|
||
/* Put X, a SYMBOL_REF, in memory. Return a SYMBOL_REF to the allocated
|
||
memory. Differs from force_const_mem in that a single pool is used for
|
||
the entire unit of translation, and the memory is not guaranteed to be
|
||
"near" the function in any interesting sense. */
|
||
|
||
static rtx
|
||
dw2_force_const_mem (x)
|
||
rtx x;
|
||
{
|
||
splay_tree_node node;
|
||
const char *str;
|
||
tree decl;
|
||
|
||
if (! indirect_pool)
|
||
{
|
||
indirect_pool = splay_tree_new (splay_tree_compare_pointers, NULL, NULL);
|
||
ggc_add_root (&indirect_pool, 1, sizeof indirect_pool, mark_indirect_pool);
|
||
}
|
||
|
||
if (GET_CODE (x) != SYMBOL_REF)
|
||
abort ();
|
||
|
||
STRIP_NAME_ENCODING (str, XSTR (x, 0));
|
||
node = splay_tree_lookup (indirect_pool, (splay_tree_key) str);
|
||
if (node)
|
||
decl = (tree) node->value;
|
||
else
|
||
{
|
||
tree id;
|
||
|
||
if (USE_LINKONCE_INDIRECT)
|
||
{
|
||
char *ref_name = alloca (strlen (str) + sizeof "DW.ref.");
|
||
|
||
sprintf (ref_name, "DW.ref.%s", str);
|
||
id = get_identifier (ref_name);
|
||
decl = build_decl (VAR_DECL, id, ptr_type_node);
|
||
DECL_ARTIFICIAL (decl) = 1;
|
||
TREE_PUBLIC (decl) = 1;
|
||
DECL_INITIAL (decl) = decl;
|
||
make_decl_one_only (decl);
|
||
}
|
||
else
|
||
{
|
||
extern int const_labelno;
|
||
char label[32];
|
||
|
||
ASM_GENERATE_INTERNAL_LABEL (label, "LC", const_labelno);
|
||
++const_labelno;
|
||
id = get_identifier (label);
|
||
decl = build_decl (VAR_DECL, id, ptr_type_node);
|
||
DECL_ARTIFICIAL (decl) = 1;
|
||
TREE_STATIC (decl) = 1;
|
||
DECL_INITIAL (decl) = decl;
|
||
}
|
||
|
||
id = maybe_get_identifier (str);
|
||
if (id)
|
||
TREE_SYMBOL_REFERENCED (id) = 1;
|
||
|
||
splay_tree_insert (indirect_pool, (splay_tree_key) str,
|
||
(splay_tree_value) decl);
|
||
}
|
||
|
||
return XEXP (DECL_RTL (decl), 0);
|
||
}
|
||
|
||
/* A helper function for dw2_output_indirect_constants called through
|
||
splay_tree_foreach. Emit one queued constant to memory. */
|
||
|
||
static int
|
||
dw2_output_indirect_constant_1 (node, data)
|
||
splay_tree_node node;
|
||
void* data ATTRIBUTE_UNUSED;
|
||
{
|
||
const char *sym;
|
||
rtx sym_ref;
|
||
|
||
sym = (const char *) node->key;
|
||
sym_ref = gen_rtx_SYMBOL_REF (Pmode, sym);
|
||
if (USE_LINKONCE_INDIRECT)
|
||
fprintf (asm_out_file, "\t.hidden DW.ref.%s\n", sym);
|
||
assemble_variable ((tree) node->value, 1, 1, 1);
|
||
assemble_integer (sym_ref, POINTER_SIZE / BITS_PER_UNIT, POINTER_SIZE, 1);
|
||
|
||
return 0;
|
||
}
|
||
|
||
/* Emit the constants queued through dw2_force_const_mem. */
|
||
|
||
void
|
||
dw2_output_indirect_constants ()
|
||
{
|
||
if (indirect_pool)
|
||
splay_tree_foreach (indirect_pool, dw2_output_indirect_constant_1, NULL);
|
||
}
|
||
|
||
/* Like dw2_asm_output_addr_rtx, but encode the pointer as directed. */
|
||
|
||
void
|
||
dw2_asm_output_encoded_addr_rtx VPARAMS ((int encoding,
|
||
rtx addr,
|
||
const char *comment, ...))
|
||
{
|
||
int size;
|
||
|
||
VA_OPEN (ap, comment);
|
||
VA_FIXEDARG (ap, int, encoding);
|
||
VA_FIXEDARG (ap, rtx, addr);
|
||
VA_FIXEDARG (ap, const char *, comment);
|
||
|
||
size = size_of_encoded_value (encoding);
|
||
|
||
if (encoding == DW_EH_PE_aligned)
|
||
{
|
||
assemble_align (POINTER_SIZE);
|
||
assemble_integer (addr, size, POINTER_SIZE, 1);
|
||
return;
|
||
}
|
||
|
||
/* NULL is _always_ represented as a plain zero, as is 1 for Ada's
|
||
"all others". */
|
||
if (addr == const0_rtx || addr == const1_rtx)
|
||
assemble_integer (addr, size, BITS_PER_UNIT, 1);
|
||
else
|
||
{
|
||
restart:
|
||
/* Allow the target first crack at emitting this. Some of the
|
||
special relocations require special directives instead of
|
||
just ".4byte" or whatever. */
|
||
#ifdef ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX
|
||
ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX (asm_out_file, encoding, size,
|
||
addr, done);
|
||
#endif
|
||
|
||
/* Indirection is used to get dynamic relocations out of a
|
||
read-only section. */
|
||
if (encoding & DW_EH_PE_indirect)
|
||
{
|
||
/* It is very tempting to use force_const_mem so that we share data
|
||
with the normal constant pool. However, we've already emitted
|
||
the constant pool for this function. Moreover, we'd like to
|
||
share these constants across the entire unit of translation,
|
||
or better, across the entire application (or DSO). */
|
||
addr = dw2_force_const_mem (addr);
|
||
encoding &= ~DW_EH_PE_indirect;
|
||
goto restart;
|
||
}
|
||
|
||
switch (encoding & 0xF0)
|
||
{
|
||
case DW_EH_PE_absptr:
|
||
dw2_assemble_integer (size, addr);
|
||
break;
|
||
|
||
case DW_EH_PE_pcrel:
|
||
if (GET_CODE (addr) != SYMBOL_REF)
|
||
abort ();
|
||
#ifdef ASM_OUTPUT_DWARF_PCREL
|
||
ASM_OUTPUT_DWARF_PCREL (asm_out_file, size, XSTR (addr, 0));
|
||
#else
|
||
dw2_assemble_integer (size, gen_rtx_MINUS (Pmode, addr, pc_rtx));
|
||
#endif
|
||
break;
|
||
|
||
default:
|
||
/* Other encodings should have been handled by
|
||
ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX. */
|
||
abort ();
|
||
}
|
||
|
||
#ifdef ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX
|
||
done:;
|
||
#endif
|
||
}
|
||
|
||
if (flag_debug_asm && comment)
|
||
{
|
||
fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START);
|
||
vfprintf (asm_out_file, comment, ap);
|
||
}
|
||
fputc ('\n', asm_out_file);
|
||
|
||
VA_CLOSE (ap);
|
||
}
|