215 lines
6.8 KiB
C
215 lines
6.8 KiB
C
/* Common configuration file for NetBSD a.out targets.
|
|
Copyright (C) 2002 Free Software Foundation, Inc.
|
|
Contributed by Wasabi Systems, Inc.
|
|
|
|
This file is part of GNU CC.
|
|
|
|
GNU CC 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.
|
|
|
|
GNU CC 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 GNU CC; see the file COPYING. If not, write to
|
|
the Free Software Foundation, 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
/* This defines which switch letters take arguments. */
|
|
|
|
#undef SWITCH_TAKES_ARG
|
|
#define SWITCH_TAKES_ARG(CHAR) \
|
|
(DEFAULT_SWITCH_TAKES_ARG(CHAR) \
|
|
|| (CHAR) == 'R')
|
|
|
|
|
|
/* Provide an ASM_SPEC appropriate for NetBSD. Currently we only deal
|
|
with the options for generating PIC code. */
|
|
|
|
#undef ASM_SPEC
|
|
#define ASM_SPEC " %| %{fpic:-k} %{fPIC:-k -K}"
|
|
|
|
|
|
/* Provide a STARTFILE_SPEC appropriate for NetBSD a.out. Here we
|
|
provide support for the special GCC option -static. */
|
|
|
|
#undef STARTFILE_SPEC
|
|
#define STARTFILE_SPEC \
|
|
"%{!shared: \
|
|
%{pg:gcrt0%O%s} \
|
|
%{!pg: \
|
|
%{p:mcrt0%O%s} \
|
|
%{!p: \
|
|
%{!static:crt0%O%s} \
|
|
%{static:scrt0%O%s}}}}"
|
|
|
|
/* Provide a LINK_SPEC appropriate for NetBSD a.out. Here we provide
|
|
support for the special GCC options -static, -assert, and -nostdlib. */
|
|
|
|
#undef LINK_SPEC
|
|
#define LINK_SPEC \
|
|
"%{nostdlib:-nostdlib} \
|
|
%{!shared: \
|
|
%{!nostdlib: \
|
|
%{!r*: \
|
|
%{!e*:-e start}}} \
|
|
-dc -dp \
|
|
%{static:-Bstatic}} \
|
|
%{shared:-Bshareable} \
|
|
%{R*} \
|
|
%{assert*}"
|
|
|
|
|
|
/* Some imports from svr4.h in support of shared libraries. */
|
|
|
|
/* Define the strings used for the .type, .size, and .set directives.
|
|
These strings generally do not vary from one system running NetBSD
|
|
to another, but if a given system needs to use different pseudo-op
|
|
names for these, they may be overridden in the file included after
|
|
this one. */
|
|
|
|
#undef TYPE_ASM_OP
|
|
#undef SIZE_ASM_OP
|
|
#undef SET_ASM_OP
|
|
#define TYPE_ASM_OP "\t.type\t"
|
|
#define SIZE_ASM_OP "\t.size\t"
|
|
#define SET_ASM_OP "\t.set\t"
|
|
|
|
|
|
/* This is how we tell the assembler that a symbol is weak. */
|
|
|
|
#undef ASM_WEAKEN_LABEL
|
|
#define ASM_WEAKEN_LABEL(FILE,NAME) \
|
|
do \
|
|
{ \
|
|
fputs ("\t.globl\t", FILE); assemble_name (FILE, NAME); \
|
|
fputc ('\n', FILE); \
|
|
fputs ("\t.weak\t", FILE); assemble_name (FILE, NAME); \
|
|
fputc ('\n', FILE); \
|
|
} \
|
|
while (0)
|
|
|
|
|
|
/* The following macro defines the format used to output the second
|
|
operand of the .type assembler directive. Different svr4 assemblers
|
|
expect various different forms of this operand. The one given here
|
|
is just a default. You may need to override it in your machine-
|
|
specific tm.h file (depending on the particulars of your assembler). */
|
|
|
|
#undef TYPE_OPERAND_FMT
|
|
#define TYPE_OPERAND_FMT "@%s"
|
|
|
|
|
|
/* Write the extra assembler code needed to declare a function's result.
|
|
Most svr4 assemblers don't require any special declaration of the
|
|
result value, but there are exceptions. */
|
|
|
|
#ifndef ASM_DECLARE_RESULT
|
|
#define ASM_DECLARE_RESULT(FILE, RESULT)
|
|
#endif
|
|
|
|
|
|
/* These macros generate the special .type and .size directives which
|
|
are used to set the corresponding fields of the linker symbol table
|
|
entries in an ELF object file under SVR4 (and a.out on NetBSD).
|
|
These macros also output the starting labels for the relevant
|
|
functions/objects. */
|
|
|
|
/* Write the extra assembler code needed to declare a function properly.
|
|
Some svr4 assemblers need to also have something extra said about the
|
|
function's return value. We allow for that here. */
|
|
|
|
#undef ASM_DECLARE_FUNCTION_NAME
|
|
#define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
|
|
do \
|
|
{ \
|
|
fprintf (FILE, "%s", TYPE_ASM_OP); \
|
|
assemble_name (FILE, NAME); \
|
|
putc (',', FILE); \
|
|
fprintf (FILE, TYPE_OPERAND_FMT, "function"); \
|
|
putc ('\n', FILE); \
|
|
ASM_DECLARE_RESULT (FILE, DECL_RESULT (DECL)); \
|
|
ASM_OUTPUT_LABEL(FILE, NAME); \
|
|
} \
|
|
while (0)
|
|
|
|
|
|
/* Write the extra assembler code needed to declare an object properly. */
|
|
|
|
#undef ASM_DECLARE_OBJECT_NAME
|
|
#define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \
|
|
do \
|
|
{ \
|
|
fprintf (FILE, "%s", TYPE_ASM_OP); \
|
|
assemble_name (FILE, NAME); \
|
|
putc (',', FILE); \
|
|
fprintf (FILE, TYPE_OPERAND_FMT, "object"); \
|
|
putc ('\n', FILE); \
|
|
size_directive_output = 0; \
|
|
if (!flag_inhibit_size_directive && DECL_SIZE (DECL)) \
|
|
{ \
|
|
size_directive_output = 1; \
|
|
fprintf (FILE, "%s", SIZE_ASM_OP); \
|
|
assemble_name (FILE, NAME); \
|
|
fprintf (FILE, ",%d\n", \
|
|
int_size_in_bytes (TREE_TYPE (DECL))); \
|
|
} \
|
|
ASM_OUTPUT_LABEL(FILE, NAME); \
|
|
} \
|
|
while (0)
|
|
|
|
|
|
/* Output the size directive for a decl in rest_of_decl_compilation
|
|
in the case where we did not do so before the initializer.
|
|
Once we find the error_mark_node, we know that the value of
|
|
size_directive_output was set
|
|
by ASM_DECLARE_OBJECT_NAME when it was run for the same decl. */
|
|
|
|
#undef ASM_FINISH_DECLARE_OBJECT
|
|
#define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP_LEVEL, AT_END) \
|
|
do \
|
|
{ \
|
|
const char *name = XSTR (XEXP (DECL_RTL (DECL), 0), 0); \
|
|
if (!flag_inhibit_size_directive && DECL_SIZE (DECL) \
|
|
&& ! AT_END && TOP_LEVEL \
|
|
&& DECL_INITIAL (DECL) == error_mark_node \
|
|
&& !size_directive_output) \
|
|
{ \
|
|
size_directive_output = 1; \
|
|
fprintf (FILE, "%s", SIZE_ASM_OP); \
|
|
assemble_name (FILE, name); \
|
|
fprintf (FILE, ",%d\n", \
|
|
int_size_in_bytes (TREE_TYPE (DECL))); \
|
|
} \
|
|
} \
|
|
while (0)
|
|
|
|
|
|
/* This is how to declare the size of a function. */
|
|
|
|
#undef ASM_DECLARE_FUNCTION_SIZE
|
|
#define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL) \
|
|
do \
|
|
{ \
|
|
if (!flag_inhibit_size_directive) \
|
|
{ \
|
|
char label[256]; \
|
|
static int labelno; \
|
|
labelno++; \
|
|
ASM_GENERATE_INTERNAL_LABEL (label, "Lfe", labelno); \
|
|
ASM_OUTPUT_INTERNAL_LABEL (FILE, "Lfe", labelno); \
|
|
fprintf (FILE, "%s", SIZE_ASM_OP); \
|
|
assemble_name (FILE, (FNAME)); \
|
|
fprintf (FILE, ","); \
|
|
assemble_name (FILE, label); \
|
|
fprintf (FILE, "-"); \
|
|
assemble_name (FILE, (FNAME)); \
|
|
putc ('\n', FILE); \
|
|
} \
|
|
} \
|
|
while (0)
|