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Makefile.in (CRTSTUFF_CFLAGS): New. 

* Makefile.in (CRTSTUFF_CFLAGS): New.
	(crtbegin.o, crtend.o, crtbeginS.o, crtendS.o, crtbeginT.o): Use it.
	* config.gcc (alpha-linux, alpha-freebsd, alpha-netbsd): Use plain
	crtstuff.c instead of alpha assembly version.
	* crtstuff.c (CRT_CALL_STATIC_FUNCTION): Rewrite to assume the
	entire dummy function sequence.  Use FORCE_CODE_SECTION_ALIGN
	not FORCE_{INIT,FINI}_SECTION_ALIGN.
	(__do_global_dtors_aux): Mark used.
	(frame_dummy, __do_global_ctors_aux): Mark used.
	(fini_dummy, init_dummy): Remove.

	* config/alpha/crtbegin.asm: Remove file.
	* config/alpha/crtend.asm: Remove file.
	* config/alpha/t-crtbe: Remove file.
	* config/alpha/elf.h (CRT_CALL_STATIC_FUNCTION): New.
	(LINK_EH_SPEC): New.

	* config/cris/cris.h (CRT_CALL_STATIC_FUNCTION): Rewrite old
	FORCE_INIT_SECTION_ALIGN hack.  Register __fini_start before
	calling constructors.
	* config/cris/linux.h (CRT_CALL_STATIC_FUNCTION): Undef.

	* config/i386/i386.h (CRT_CALL_STATIC_FUNCTION): New.
	* config/i386/linux.h (CRT_CALL_STATIC_FUNCTION): Replace old
	CRT_END_INIT_DUMMY hack.
	* config/i386/sol2.h (FORCE_CODE_SECTION_ALIGN): Replace
	FORCE_{INIT,FINI}_SECTION_ALIGN.

	* config/mcore/mcore-elf.h (FORCE_CODE_SECTION_ALIGN): Replace
	FORCE_{INIT,FINI}_SECTION_ALIGN.

	* config/s390/s390.h (CRT_CALL_STATIC_FUNCTION): Update for new
	invocation sequence.
	* config/sh/sh.h (CRT_CALL_STATIC_FUNCTION): Likewise.

	* doc/tm.texi (CRT_CALL_STATIC_FUNCTION): Update.
	(FORCE_CODE_SECTION_ALIGN): New.

From-SVN: r49261
This commit is contained in:
Richard Henderson 2002-01-26 20:18:12 -08:00 committed by Richard Henderson
parent 1f9131b7db
commit cea3bd3e5a
17 changed files with 180 additions and 490 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

40
gcc/ChangeLog
View File

@ -1,3 +1,43 @@
2002-01-26 Richard Henderson <rth@redhat.com>
* Makefile.in (CRTSTUFF_CFLAGS): New.
(crtbegin.o, crtend.o, crtbeginS.o, crtendS.o, crtbeginT.o): Use it.
* config.gcc (alpha-linux, alpha-freebsd, alpha-netbsd): Use plain
crtstuff.c instead of alpha assembly version.
* crtstuff.c (CRT_CALL_STATIC_FUNCTION): Rewrite to assume the
entire dummy function sequence. Use FORCE_CODE_SECTION_ALIGN
not FORCE_{INIT,FINI}_SECTION_ALIGN.
(__do_global_dtors_aux): Mark used.
(frame_dummy, __do_global_ctors_aux): Mark used.
(fini_dummy, init_dummy): Remove.
* config/alpha/crtbegin.asm: Remove file.
* config/alpha/crtend.asm: Remove file.
* config/alpha/t-crtbe: Remove file.
* config/alpha/elf.h (CRT_CALL_STATIC_FUNCTION): New.
(LINK_EH_SPEC): New.
* config/cris/cris.h (CRT_CALL_STATIC_FUNCTION): Rewrite old
FORCE_INIT_SECTION_ALIGN hack. Register __fini_start before
calling constructors.
* config/cris/linux.h (CRT_CALL_STATIC_FUNCTION): Undef.
* config/i386/i386.h (CRT_CALL_STATIC_FUNCTION): New.
* config/i386/linux.h (CRT_CALL_STATIC_FUNCTION): Replace old
CRT_END_INIT_DUMMY hack.
* config/i386/sol2.h (FORCE_CODE_SECTION_ALIGN): Replace
FORCE_{INIT,FINI}_SECTION_ALIGN.
* config/mcore/mcore-elf.h (FORCE_CODE_SECTION_ALIGN): Replace
FORCE_{INIT,FINI}_SECTION_ALIGN.
* config/s390/s390.h (CRT_CALL_STATIC_FUNCTION): Update for new
invocation sequence.
* config/sh/sh.h (CRT_CALL_STATIC_FUNCTION): Likewise.
* doc/tm.texi (CRT_CALL_STATIC_FUNCTION): Update.
(FORCE_CODE_SECTION_ALIGN): New.
2002-01-26 Richard Henderson <rth@redhat.com>
* config/cris/cris.c (cris_print_operand): Handle 64-bit CONST_INT.

36
gcc/Makefile.in
View File

@ -370,6 +370,10 @@ LIBGCC2_INCLUDES =
# Additional target-dependent options for compiling libgcc2.a.
TARGET_LIBGCC2_CFLAGS =
# Options to use when compiling crtbegin/end.
CRTSTUFF_CFLAGS = -O2 $(GCC_CFLAGS) $(INCLUDES) $(MULTILIB_CFLAGS) -g0 \
-finhibit-size-directive -fno-inline-functions -fno-exceptions
# Additional sources to handle exceptions; overridden on ia64.
LIB2ADDEH = $(srcdir)/unwind-dw2.c $(srcdir)/unwind-dw2-fde.c \
$(srcdir)/unwind-sjlj.c
@ -1067,42 +1071,34 @@ stmp-multilib: $(LIBGCC_DEPS)
# constructors.
$(T)crtbegin.o: crtstuff.c $(GCC_PASSES) $(TCONFIG_H) auto-host.h \
gbl-ctors.h stmp-int-hdrs tsystem.h
$(GCC_FOR_TARGET) $(GCC_CFLAGS) $(INCLUDES) $(MULTILIB_CFLAGS) -g0 \
-finhibit-size-directive -fno-inline-functions \
-fno-exceptions $(CRTSTUFF_T_CFLAGS) @inhibit_libc@ \
-c $(srcdir)/crtstuff.c -DCRT_BEGIN -o $(T)crtbegin$(objext)
$(GCC_FOR_TARGET) $(CRTSTUFF_CFLAGS) $(CRTSTUFF_T_CFLAGS) \
@inhibit_libc@ -c $(srcdir)/crtstuff.c -DCRT_BEGIN \
-o $(T)crtbegin$(objext)
$(T)crtend.o: crtstuff.c $(GCC_PASSES) $(TCONFIG_H) auto-host.h \
gbl-ctors.h stmp-int-hdrs tsystem.h
$(GCC_FOR_TARGET) $(GCC_CFLAGS) $(INCLUDES) $(MULTILIB_CFLAGS) -g0 \
-finhibit-size-directive -fno-inline-functions \
-fno-exceptions $(CRTSTUFF_T_CFLAGS) @inhibit_libc@ \
-c $(srcdir)/crtstuff.c -DCRT_END -o $(T)crtend$(objext)
$(GCC_FOR_TARGET) $(CRTSTUFF_CFLAGS) $(CRTSTUFF_T_CFLAGS) \
@inhibit_libc@ -c $(srcdir)/crtstuff.c -DCRT_END \
-o $(T)crtend$(objext)
# These are versions of crtbegin and crtend for shared libraries.
$(T)crtbeginS.o: crtstuff.c $(GCC_PASSES) $(TCONFIG_H) auto-host.h \
gbl-ctors.h stmp-int-hdrs tsystem.h
$(GCC_FOR_TARGET) $(GCC_CFLAGS) $(INCLUDES) $(MULTILIB_CFLAGS) -g0 \
-finhibit-size-directive -fno-inline-functions \
-fno-exceptions $(CRTSTUFF_T_CFLAGS_S) @inhibit_libc@ \
-c $(srcdir)/crtstuff.c -DCRT_BEGIN -DCRTSTUFFS_O \
$(GCC_FOR_TARGET) $(CRTSTUFF_CFLAGS) $(CRTSTUFF_T_CFLAGS_S) \
@inhibit_libc@ -c $(srcdir)/crtstuff.c -DCRT_BEGIN -DCRTSTUFFS_O \
-o $(T)crtbeginS$(objext)
$(T)crtendS.o: crtstuff.c $(GCC_PASSES) $(TCONFIG_H) auto-host.h \
gbl-ctors.h stmp-int-hdrs tsystem.h
$(GCC_FOR_TARGET) $(GCC_CFLAGS) $(INCLUDES) $(MULTILIB_CFLAGS) -g0 \
-finhibit-size-directive -fno-inline-functions \
-fno-exceptions $(CRTSTUFF_T_CFLAGS_S) @inhibit_libc@ \
-c $(srcdir)/crtstuff.c -DCRT_END -DCRTSTUFFS_O \
$(GCC_FOR_TARGET) $(CRTSTUFF_CFLAGS) $(CRTSTUFF_T_CFLAGS_S) \
@inhibit_libc@ -c $(srcdir)/crtstuff.c -DCRT_END -DCRTSTUFFS_O \
-o $(T)crtendS$(objext)
# This is a version of crtbegin for -static links.
$(T)crtbeginT.o: crtstuff.c $(GCC_PASSES) $(TCONFIG_H) auto-host.h \
gbl-ctors.h stmp-int-hdrs tsystem.h
$(GCC_FOR_TARGET) $(GCC_CFLAGS) $(INCLUDES) $(MULTILIB_CFLAGS) -g0 \
-finhibit-size-directive -fno-inline-functions \
-fno-exceptions $(CRTSTUFF_T_CFLAGS) @inhibit_libc@ \
-c $(srcdir)/crtstuff.c -DCRT_BEGIN -DCRTSTUFFT_O \
$(GCC_FOR_TARGET) $(CRTSTUFF_CFLAGS) $(CRTSTUFF_T_CFLAGS) \
@inhibit_libc@ -c $(srcdir)/crtstuff.c -DCRT_BEGIN -DCRTSTUFFT_O \
-o $(T)crtbeginT$(objext)
# Compile the start modules crt0.o and mcrt0.o that are linked with

12
gcc/config.gcc
View File

@ -461,7 +461,8 @@ alpha*-*-linux*ecoff*)
alpha*-*-linux*libc1*)
tm_file="${tm_file} alpha/elf.h alpha/linux.h alpha/linux-elf.h"
target_cpu_default="MASK_GAS"
tmake_file="t-slibgcc-elf-ver t-linux t-linux-gnulibc1 alpha/t-alpha alpha/t-crtbe alpha/t-crtfm alpha/t-ieee"
tmake_file="t-slibgcc-elf-ver t-linux t-linux-gnulibc1 alpha/t-alpha alpha/t-crtfm alpha/t-ieee"
extra_parts="crtbegin.o crtend.o crtbeginS.o crtendS.o crtbeginT.o"
gas=yes gnu_ld=yes
if test x$enable_threads = xyes; then
thread_file='posix'
@ -470,7 +471,8 @@ alpha*-*-linux*libc1*)
alpha*-*-linux*)
tm_file="${tm_file} alpha/elf.h alpha/linux.h alpha/linux-elf.h"
target_cpu_default="MASK_GAS"
tmake_file="t-slibgcc-elf-ver t-linux alpha/t-crtbe alpha/t-crtfm alpha/t-alpha alpha/t-ieee"
tmake_file="t-slibgcc-elf-ver t-linux alpha/t-crtfm alpha/t-alpha alpha/t-ieee"
extra_parts="crtbegin.o crtend.o crtbeginS.o crtendS.o crtbeginT.o"
gas=yes gnu_ld=yes
if test x$enable_threads = xyes; then
thread_file='posix'
@ -479,12 +481,14 @@ alpha*-*-linux*)
alpha*-*-freebsd*)
tm_file="${tm_file} ${fbsd_tm_file} alpha/elf.h alpha/freebsd.h"
target_cpu_default="MASK_GAS"
tmake_file="${tmake_file} alpha/t-crtbe alpha/t-crtfm alpha/t-alpha alpha/t-ieee"
tmake_file="${tmake_file} alpha/t-crtfm alpha/t-alpha alpha/t-ieee"
extra_parts="crtbegin.o crtend.o crtbeginS.o crtendS.o crtbeginT.o"
;;
alpha*-*-netbsd*)
tm_file="${tm_file} netbsd.h alpha/elf.h netbsd-elf.h alpha/netbsd.h"
target_cpu_default="MASK_GAS"
tmake_file="${tmake_file} alpha/t-alpha alpha/t-crtbe alpha/t-ieee"
tmake_file="${tmake_file} alpha/t-alpha alpha/t-ieee"
extra_parts="crtbegin.o crtend.o crtbeginS.o crtendS.o crtbeginT.o"
;;
alpha*-*-openbsd*)

228
gcc/config/alpha/crtbegin.asm
View File

@ -1,228 +0,0 @@
/*
* Copyright (C) 1996, 1998, 2000 Free Software Foundation, Inc.
* Contributed by Richard Henderson (rth@tamu.edu)
*
* This file 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.
*
* In addition to the permissions in the GNU General Public License, the
* Free Software Foundation gives you unlimited permission to link the
* compiled version of this file with other programs, and to distribute
* those programs without any restriction coming from the use of this
* file. (The General Public License restrictions do apply in other
* respects; for example, they cover modification of the file, and
* distribution when not linked into another program.)
*
* This file 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 this program; see the file COPYING. If not, write to
* the Free Software Foundation, 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*
* As a special exception, if you link this library with files
* compiled with GCC to produce an executable, this does not cause
* the resulting executable to be covered by the GNU General Public License.
* This exception does not however invalidate any other reasons why
* the executable file might be covered by the GNU General Public License.
*/
#include "auto-host.h"
/*
* Heads of the constructor/destructor lists.
*/
/* The __*TOR_LIST__ symbols are not global because when this file is used
in a shared library, we do not want the symbol to fall over to the
application's lists. */
.section .ctors,"aw"
.align 3
__CTOR_LIST__:
.quad -1
.section .dtors,"aw"
.align 3
__DTOR_LIST__:
.quad -1
.section .jcr,"aw"
.align 3
__JCR_LIST__:
.section .eh_frame,"aw"
__EH_FRAME_BEGIN__:
/*
* Fragment of the ELF _fini routine that invokes our dtor cleanup.
*/
.section .fini,"ax"
/* Since the bits of the _fini function are spread across many
object files, each potentially with its own GP, we must
assume we need to load ours. Further, our .fini section
can easily be more than 4MB away from our .text bits so we
can't use bsr. */
br $29,1f
1: ldgp $29,0($29)
jsr $26,__do_global_dtors_aux
/* Must match the alignment we got from crti.o else we get
zero-filled holes in our _fini function and then SIGILL. */
.align 3
/*
* Fragment of the ELF _init routine that sets up the frame info.
*/
.section .init,"ax"
br $29,1f
1: ldgp $29,0($29)
jsr $26,__do_frame_setup
.align 3
/*
* Invoke our destructors in order.
*/
.section .sdata
/* Support recursive calls to exit. */
.type dtor_ptr,@object
.size dtor_ptr,4
dtor_ptr:
.gprel32 __DTOR_LIST__ + 8
/* A globally unique widget for c++ local destructors to hang off.
This has a unique value in every dso; in the main program its
value is zero. The object should be protected. This means the
instance in any dso or the main program is not used in any other
dso. The dynamic linker takes care of this. */
.global __dso_handle
.type __dso_handle,@object
.size __dso_handle,8
#ifdef SHARED
.section .data
.align 3
__dso_handle:
.quad __dso_handle
#else
.section .bss
.align 3
__dso_handle:
.zero 8
#endif
#ifdef HAVE_GAS_HIDDEN
.hidden __dso_handle
#endif
.text
.align 3
.ent __do_global_dtors_aux
__do_global_dtors_aux:
ldgp $29,0($27)
lda $30,-16($30)
.frame $30,16,$26,0
stq $9,8($30)
stq $26,0($30)
.mask 0x4000200,-16
.prologue 1
#ifdef SHARED
/* Do c++ local destructors. */
lda $1,__cxa_finalize
beq $1,0f
lda $16,__dso_handle
jsr $26,__cxa_finalize
ldgp $29,0($26)
#endif
0: lda $9,dtor_ptr
br 2f
1: stl $1,0($9)
jsr $26,($27)
ldgp $29,0($26)
2: ldl $1,0($9)
addq $1,$29,$2
ldq $27,0($2)
addl $1,8,$1
bne $27,1b
/* Remove our frame info. */
lda $1,__deregister_frame_info
beq $1,3f
lda $16,__EH_FRAME_BEGIN__
jsr $26,__deregister_frame_info
ldgp $29,0($26)
3: ldq $26,0($30)
ldq $9,8($30)
lda $30,16($30)
ret
.end __do_global_dtors_aux
/*
* Install our frame info; register java classes, if any.
*/
.section .bss
.type frame_object,@object
.size frame_object, 48
.align 3
frame_object:
.zero 48
.text
.align 3
.ent __do_frame_setup
__do_frame_setup:
ldgp $29,0($27)
lda $30,-16($30)
.frame $30,16,$26,0
stq $26,0($30)
.mask 0x4000000,-16
.prologue 1
lda $1,__register_frame_info
beq $1,0f
lda $16,__EH_FRAME_BEGIN__
lda $17,frame_object
jsr $26,__register_frame_info
ldgp $29,0($26)
0: lda $1,_Jv_RegisterClasses
lda $16,__JCR_LIST__
beq $1,0f
ldq $2,8($16)
beq $2,0f
jsr $26,_Jv_RegisterClasses
ldgp $29,0($26)
0: ldq $26,0($30)
lda $30,16($30)
ret
.end __do_frame_setup
.weak __register_frame_info
.weak __deregister_frame_info
#ifdef SHARED
.weak __cxa_finalize
#endif
.weak _Jv_RegisterClasses

113
gcc/config/alpha/crtend.asm
View File

@ -1,113 +0,0 @@
/*
* Copyright (C) 1996, 2000 Free Software Foundation, Inc.
* Contributed by Richard Henderson (rth@tamu.edu)
*
* This file 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.
*
* In addition to the permissions in the GNU General Public License, the
* Free Software Foundation gives you unlimited permission to link the
* compiled version of this file with other programs, and to distribute
* those programs without any restriction coming from the use of this
* file. (The General Public License restrictions do apply in other
* respects; for example, they cover modification of the file, and
* distribution when not linked into another program.)
*
* This file 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 this program; see the file COPYING. If not, write to
* the Free Software Foundation, 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*
* As a special exception, if you link this library with files
* compiled with GCC to produce an executable, this does not cause
* the resulting executable to be covered by the GNU General Public License.
* This exception does not however invalidate any other reasons why
* the executable file might be covered by the GNU General Public License.
*/
/*
* Tails of the constructor/destructor lists.
*/
/* The __*TOR_END__ symbols are not global because when this file is used
in a shared library, we do not want the symbol to fall over to the
application's lists. */
.section .ctors,"aw"
.align 3
__CTOR_END__:
.quad 0
.section .dtors,"aw"
.align 3
__DTOR_END__:
.quad 0
.section .jcr,"aw"
.align 3
__JCR_END__:
.quad 0
.section .eh_frame,"aw"
__FRAME_END__:
.quad 0
/*
* Fragment of the ELF _init routine that invokes our ctor startup
*/
.section .init,"ax"
/* Since the bits of the _init function are spread across many
object files, each potentially with its own GP, we must
assume we need to load ours. Further, our .init section
can easily be more than 4MB away from our .text bits so we
can't use bsr. */
br $29,1f
1: ldgp $29,0($29)
jsr $26,__do_global_ctors_aux
/* Must match the alignment we got from crti.o else we get
zero-filled holes in our _init function and thense SIGILL. */
.align 3
/*
* Invoke our constructors in order.
*/
.text
.align 3
.ent __do_global_ctors_aux
__do_global_ctors_aux:
ldgp $29,0($27)
lda $30,-16($30)
.frame $30,16,$26,0
stq $9,8($30)
stq $26,0($30)
.mask 0x4000200,-16
.prologue 1
lda $9,__CTOR_END__-8
br 1f
0: jsr $26,($27)
1: ldq $27,0($9)
subq $9,8,$9
not $27,$0
bne $0,0b
ldq $26,0($30)
ldq $9,8($30)
lda $30,16($30)
ret
.end __do_global_ctors_aux

24
gcc/config/alpha/elf.h
View File

@ -1,5 +1,5 @@
/* Definitions of target machine for GNU compiler, for DEC Alpha w/ELF.
Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001
Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002
Free Software Foundation, Inc.
Contributed by Richard Henderson (rth@tamu.edu).
@ -642,3 +642,25 @@ do { \
alpha_this_gpdisp_sequence_number = 0)
extern int alpha_this_literal_sequence_number;
extern int alpha_this_gpdisp_sequence_number;
/* Since the bits of the _init and _fini function is spread across
many object files, each potentially with its own GP, we must assume
we need to load our GP. Further, the .init/.fini section can
easily be more than 4MB away from the function to call so we can't
use bsr. */
#define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC) \
asm (SECTION_OP "\n" \
" br $29,1f\n" \
"1: ldgp $29,0($29)\n" \
" unop\n" \
" jsr $26," USER_LABEL_PREFIX #FUNC "\n" \
" .align 3\n" \
" .previous");
/* If we have the capability create headers for efficient EH lookup.
As of Jan 2002, only glibc 2.2.4 can actually make use of this, but
I imagine that other systems will catch up. In the meantime, it
doesn't harm to make sure that the data exists to be used later. */
#if defined(HAVE_LD_EH_FRAME_HDR)
#define LINK_EH_SPEC "%{!static:--eh-frame-hdr} "
#endif

14
gcc/config/alpha/t-crtbe
View File

@ -1,14 +0,0 @@
# Effectively disable the crtbegin/end rules using crtstuff.c
T = disable
EXTRA_PARTS += crtbegin.o crtend.o crtbeginS.o crtendS.o
# Assemble startup files.
crtbegin.o: $(srcdir)/config/alpha/crtbegin.asm $(GCC_PASSES)
$(GCC_FOR_TARGET) -c -o crtbegin.o -x assembler-with-cpp -I. $(srcdir)/config/alpha/crtbegin.asm
crtend.o: $(srcdir)/config/alpha/crtend.asm $(GCC_PASSES)
$(GCC_FOR_TARGET) -c -o crtend.o -x assembler-with-cpp -I. $(srcdir)/config/alpha/crtend.asm
crtbeginS.o: $(srcdir)/config/alpha/crtbegin.asm $(GCC_PASSES)
$(GCC_FOR_TARGET) -DSHARED -c -o crtbeginS.o -x assembler-with-cpp -I. $(srcdir)/config/alpha/crtbegin.asm
crtendS.o: $(srcdir)/config/alpha/crtend.asm $(GCC_PASSES)
$(GCC_FOR_TARGET) -DSHARED -c -o crtendS.o -x assembler-with-cpp -I. $(srcdir)/config/alpha/crtend.asm

22
gcc/config/cris/cris.h
View File

@ -1451,14 +1451,20 @@ struct cum_args {int regs;};
/* We pull a little trick to register the _fini function with atexit,
after (presumably) registering the eh frame info, since we don't handle
_fini (a.k.a. ___fini_start) in crt0 or have a crti for "pure" ELF. */
#ifdef CRT_BEGIN
#define FORCE_INIT_SECTION_ALIGN \
do \
{ \
extern void __fini__start (void); \
atexit (__fini__start); \
} \
while (0)
#ifdef CRT_END
# define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC) \
static void __attribute__((__used__)) \
call_ ## FUNC (void) \
{ \
asm (SECTION_OP); \
if (__builtin_strcmp (#FUNC, "__do_global_ctors_aux") == 0) \
{ \
extern void __fini__start (void); \
atexit (__fini__start); \
} \
FUNC (); \
asm (TEXT_SECTION_ASM_OP); \
}
#endif
/* Node: PIC */

4
gcc/config/cris/linux.h
View File

@ -102,8 +102,8 @@ Boston, MA 02111-1307, USA. */
/* Node: Sections */
/* GNU/Linux has crti and crtn and does not need the
FORCE_INIT_SECTION_ALIGN trick in cris.h. */
#undef FORCE_INIT_SECTION_ALIGN
CRT_CALL_STATIC_FUNCTION trick in cris.h. */
#undef CRT_CALL_STATIC_FUNCTION
/*
* Local variables:

8
gcc/config/i386/i386.h
View File

@ -2911,6 +2911,14 @@ extern int const svr4_dbx_register_map[FIRST_PSEUDO_REGISTER];
#define ASM_SIMPLIFY_DWARF_ADDR(X) \
i386_simplify_dwarf_addr (X)
/* Switch to init or fini section via SECTION_OP, emit a call to FUNC,
and switch back. For x86 we do this only to save a few bytes that
would otherwise be unused in the text section. */
#define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC) \
asm (SECTION_OP "\n\t" \
"call " USER_LABEL_PREFIX #FUNC "\n" \
TEXT_SECTION_ASM_OP);
/* Print operand X (an rtx) in assembler syntax to file FILE.
CODE is a letter or dot (`z' in `%z0') or 0 if no letter was specified.

31
gcc/config/i386/linux.h
View File

@ -1,5 +1,6 @@
/* Definitions for Intel 386 running Linux-based GNU systems with ELF format.
Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2001 Free Software Foundation, Inc.
Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2001, 2002
Free Software Foundation, Inc.
Contributed by Eric Youngdale.
Modified for stabs-in-ELF by H.J. Lu.
@ -167,20 +168,20 @@ Boston, MA 02111-1307, USA. */
#if defined(__PIC__) && defined (USE_GNULIBC_1)
/* This is a kludge. The i386 GNU/Linux dynamic linker needs ___brk_addr,
__environ and atexit (). We have to make sure they are in the .dynsym
section. We accomplish it by making a dummy call here. This
code is never reached. */
#define CRT_END_INIT_DUMMY \
do \
{ \
extern void *___brk_addr; \
extern char **__environ; \
\
___brk_addr = __environ; \
atexit (0); \
} \
while (0)
__environ and atexit. We have to make sure they are in the .dynsym
section. We do this by forcing the assembler to create undefined
references to these symbols in the object file. */
#undef CRT_CALL_STATIC_FUNCTION
#define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC) \
asm (SECTION_OP "\n\t" \
"call " USER_LABEL_PREFIX #FUNC "\n" \
TEXT_SECTION_ASM_OP "\n\t" \
".extern ___brk_addr\n\t" \
".type ___brk_addr,@object\n\t" \
".extern __environ\n\t" \
".type __environ,@object\n\t" \
".extern atexit\n\t" \
".type atexit,@function");
#endif
/* Handle special EH pointer encodings. Absolute, pc-relative, and

6
gcc/config/i386/sol2.h
View File

@ -1,5 +1,5 @@
/* Target definitions for GNU compiler for Intel 80386 running Solaris 2
Copyright (C) 1993, 1995, 1996, 1997, 1998, 1999, 2000, 2001
Copyright (C) 1993, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002
Free Software Foundation, Inc.
Contributed by Fred Fish (fnf@cygnus.com).
@ -56,9 +56,7 @@ Boston, MA 02111-1307, USA. */
two 0x00000090 ints, which generates a segmentation violation when
executed. This macro forces the assembler to do the padding, since
it knows what it is doing. */
#define FORCE_INIT_SECTION_ALIGN asm (ALIGN_ASM_OP ## "16")
#define FORCE_FINI_SECTION_ALIGN FORCE_INIT_SECTION_ALIGN
#define FORCE_CODE_SECTION_ALIGN asm(ALIGN_ASM_OP "16");
/* Select a format to encode pointers in exception handling data. CODE
is 0 for data, 1 for code labels, 2 for function pointers. GLOBAL is

6
gcc/config/mcore/mcore-elf.h
View File

@ -1,5 +1,5 @@
/* Definitions of MCore target.
Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
Contributed by Cygnus Solutions.
This file is part of GNU CC.
@ -158,11 +158,9 @@ exports_section () \
#undef ENDFILE_SPEC
#define ENDFILE_SPEC "%{!mno-lsim:-lsim} crtend.o%s crtn.o%s"
/* The subroutine calls in the .init and .fini sections create literal
pools which must be jumped around... */
#define FORCE_INIT_SECTION_ALIGN asm ("br 1f ; .literals ; 1:")
#define FORCE_FINI_SECTION_ALIGN asm ("br 1f ; .literals ; 1:")
#define FORCE_CODE_SECTION_ALIGN asm ("br 1f ; .literals ; 1:");
#undef CTORS_SECTION_ASM_OP
#define CTORS_SECTION_ASM_OP "\t.section\t.ctors,\"aw\""

14
gcc/config/s390/s390.h
View File

@ -1299,15 +1299,13 @@ extern struct rtx_def *s390_compare_op0, *s390_compare_op1;
/* S/390 constant pool breaks the devices in crtstuff.c to control section
in where code resides. We have to write it as asm code. */
#ifndef __s390x__
#define CRT_CALL_STATIC_FUNCTION(func) \
if (0) \
func (); /* ... to avoid warnings. */ \
else \
asm \
("bras\t%%r2,1f\n\
0: .long\t" #func " - 0b\n\
#define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC) \
asm (SECTION_OP "\n\
bras\t%%r2,1f\n\
0: .long\t" USER_LABEL_PREFIX #FUNC " - 0b\n\
1: l\t%%r3,0(%%r2)\n\
bas\t%%r14,0(%%r3,%%r2)" : : : "2", "3", "cc", "memory");
bas\t%%r14,0(%%r3,%%r2)\n\
.previous");
#endif
/* Constant Pool for all symbols operands which are changed with

16
gcc/config/sh/sh.h
View File

@ -2301,21 +2301,15 @@ extern struct rtx_def *fpscr_rtx;
/* SH constant pool breaks the devices in crtstuff.c to control section
in where code resides. We have to write it as asm code. */
#define CRT_CALL_STATIC_FUNCTION(func) \
if (0) \
/* This avoids warnings about the static function being unused. */ \
func (); \
else \
/* We should be passing FUNC to the asm statement as an asm input \
operand, but this breaks with -fPIC. FIXME. */ \
asm \
("mov.l 1f,r1\n\
#define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC) \
asm (SECTION_OP "\n\
mov.l 1f,r1\n\
mova 2f,r0\n\
braf r1\n\
lds r0,pr\n\
0: .p2align 2\n\
1: .long " USER_LABEL_PREFIX #func " - 0b\n\
2:")
1: .long " USER_LABEL_PREFIX #FUNC " - 0b\n\
2:\n" TEXT_SECTION_ASM_OP);
#define ALLOCATE_INITIAL_VALUE(hard_reg) \
(REGNO (hard_reg) == PR_REG \

76
gcc/crtstuff.c
View File

@ -1,7 +1,7 @@
/* Specialized bits of code needed to support construction and
destruction of file-scope objects in C++ code.
Copyright (C) 1991, 1994, 1995, 1996, 1997, 1998,
1999, 2000, 2001 Free Software Foundation, Inc.
1999, 2000, 2001, 2002 Free Software Foundation, Inc.
Contributed by Ron Guilmette (rfg@monkeys.com).
This file is part of GCC.
@ -62,8 +62,20 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA
#include "tsystem.h"
#include "unwind-dw2-fde.h"
#ifndef FORCE_CODE_SECTION_ALIGN
# define FORCE_CODE_SECTION_ALIGN
#endif
#ifndef CRT_CALL_STATIC_FUNCTION
# define CRT_CALL_STATIC_FUNCTION(func) func ()
# define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC) \
static void __attribute__((__used__)) \
call_ ## FUNC (void) \
{ \
asm (SECTION_OP); \
FUNC (); \
FORCE_CODE_SECTION_ALIGN \
asm (TEXT_SECTION_ASM_OP); \
}
#endif
#if defined(OBJECT_FORMAT_ELF) && defined(HAVE_LD_EH_FRAME_HDR) \
@ -237,11 +249,11 @@ extern void __cxa_finalize (void *) TARGET_ATTRIBUTE_WEAK;
the list we left off processing, and we resume at that point,
should we be re-invoked. */
static void
static void __attribute__((used))
__do_global_dtors_aux (void)
{
static func_ptr *p = __DTOR_LIST__ + 1;
static int completed;
static _Bool completed;
func_ptr f;
if (__builtin_expect (completed, 0))
@ -273,26 +285,15 @@ __do_global_dtors_aux (void)
completed = 1;
}
/* Stick a call to __do_global_dtors_aux into the .fini section. */
static void __attribute__ ((__unused__))
fini_dummy (void)
{
asm (FINI_SECTION_ASM_OP);
CRT_CALL_STATIC_FUNCTION (__do_global_dtors_aux);
#ifdef FORCE_FINI_SECTION_ALIGN
FORCE_FINI_SECTION_ALIGN;
#endif
asm (TEXT_SECTION_ASM_OP);
}
CRT_CALL_STATIC_FUNCTION (FINI_SECTION_ASM_OP, __do_global_dtors_aux)
#if defined(USE_EH_FRAME_REGISTRY) || defined(JCR_SECTION_NAME)
/* Stick a call to __register_frame_info into the .init section. For some
reason calls with no arguments work more reliably in .init, so stick the
call in another function. */
static void
static void __attribute__((used))
frame_dummy (void)
{
#ifdef USE_EH_FRAME_REGISTRY
@ -322,16 +323,7 @@ frame_dummy (void)
#endif /* JCR_SECTION_NAME */
}
static void __attribute__ ((__unused__))
init_dummy (void)
{
asm (INIT_SECTION_ASM_OP);
CRT_CALL_STATIC_FUNCTION (frame_dummy);
#ifdef FORCE_INIT_SECTION_ALIGN
FORCE_INIT_SECTION_ALIGN;
#endif
asm (TEXT_SECTION_ASM_OP);
}
CRT_CALL_STATIC_FUNCTION (INIT_SECTION_ASM_OP, frame_dummy)
#endif /* EH_FRAME_SECTION_NAME || JCR_SECTION_NAME */
#else /* OBJECT_FORMAT_ELF */
@ -373,12 +365,10 @@ asm (INIT_SECTION_ASM_OP); /* cc1 doesn't know that we are switching! */
such a thing) so that we can properly perform the construction of
file-scope static-storage C++ objects within shared libraries. */
static void
static void __attribute__((used))
__do_global_ctors_aux (void) /* prologue goes in .init section */
{
#ifdef FORCE_INIT_SECTION_ALIGN
FORCE_INIT_SECTION_ALIGN; /* Explicit align before switch to .text */
#endif
FORCE_CODE_SECTION_ALIGN /* explicit align before switch to .text */
asm (TEXT_SECTION_ASM_OP); /* don't put epilogue and body in .init */
DO_GLOBAL_CTORS_BODY;
atexit (__do_global_dtors);
@ -486,8 +476,7 @@ STATIC void *__JCR_END__[1]
#ifdef INIT_SECTION_ASM_OP
#ifdef OBJECT_FORMAT_ELF
static void
static void __attribute__((used))
__do_global_ctors_aux (void)
{
func_ptr *p;
@ -496,21 +485,7 @@ __do_global_ctors_aux (void)
}
/* Stick a call to __do_global_ctors_aux into the .init section. */
static void __attribute__ ((__unused__))
init_dummy (void)
{
asm (INIT_SECTION_ASM_OP);
CRT_CALL_STATIC_FUNCTION (__do_global_ctors_aux);
#ifdef FORCE_INIT_SECTION_ALIGN
FORCE_INIT_SECTION_ALIGN;
#endif
asm (TEXT_SECTION_ASM_OP);
#ifdef CRT_END_INIT_DUMMY
CRT_END_INIT_DUMMY;
#endif
}
CRT_CALL_STATIC_FUNCTION (INIT_SECTION_ASM_OP, __do_global_ctors_aux)
#else /* OBJECT_FORMAT_ELF */
/* Stick the real initialization code, followed by a normal sort of
@ -542,10 +517,7 @@ __do_global_ctors_aux (void) /* prologue goes in .text section */
atexit (__do_global_dtors);
} /* epilogue and body go in .init section */
#ifdef FORCE_INIT_SECTION_ALIGN
FORCE_INIT_SECTION_ALIGN;
#endif
FORCE_CODE_SECTION_ALIGN
asm (TEXT_SECTION_ASM_OP);
#endif /* OBJECT_FORMAT_ELF */

20
gcc/doc/tm.texi
View File

@ -5458,16 +5458,24 @@ finalization code. If not defined, GCC will assume such a section does
not exist.
@findex CRT_CALL_STATIC_FUNCTION
@item CRT_CALL_STATIC_FUNCTION
If defined, a C statement that calls the function named as the sole
argument of this macro. This is used in @file{crtstuff.c} if
@code{INIT_SECTION_ASM_OP} or @code{FINI_SECTION_ASM_OP} to calls to
initialization and finalization functions from the init and fini
sections. By default, this macro is a simple function call. Some
@item CRT_CALL_STATIC_FUNCTION (@var{section_op}, @var{function})
If defined, an ASM statement that switches to a different section
via @var{section_op}, calls @var{function}, and switches back to
the text section. This is used in @file{crtstuff.c} if
@code{INIT_SECTION_ASM_OP} or @code{FINI_SECTION_ASM_OP} to calls
to initialization and finalization functions from the init and fini
sections. By default, this macro uses a simple function call. Some
ports need hand-crafted assembly code to avoid dependencies on
registers initialized in the function prologue or to ensure that
constant pools don't end up too far way in the text section.
@findex FORCE_CODE_SECTION_ALIGN
@item FORCE_CODE_SECTION_ALIGN
If defined, an ASM statement that aligns a code section to some
arbitrary boundary. This is used to force all fragments of the
@code{.init} and @code{.fini} sections to have to same alignment
and thus prevent the linker from having to add any padding.
@findex EXTRA_SECTIONS
@findex in_text
@findex in_data