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glibc/glibc-2.16-powerpc-initfini.patch

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commit 3add8e1353d62d77fdd9b4ca363cdfe7006b0efb
Author: Joseph Myers <joseph@codesourcery.com>
Date: Wed Feb 8 01:45:26 2012 +0000
Support crti.S and crtn.S provided directly by architectures.
2012-02-08 Joseph Myers <joseph@codesourcery.com>
Support crti.S and crtn.S provided directly by architectures.
* csu/Makefile [crti.S in sysdirs] (generated): Do not append.
[crti.S in sysdirs] (omit-deps): Likewise.
[crti.S in sysdirs] (CFLAGS-initfini.s): Do not define variable.
[crti.S in sysdirs] ($(crtstuff:%=$(objpfx)%.o)): Disable rule.
[crti.S in sysdirs] ($(objpfx)initfini.s): Likewise.
[crti.S in sysdirs] ($(objpfx)crti.S): Likewise.
[crti.S in sysdirs] ($(objpfx)crtn.S): Likewise.
[crti.S in sysdirs] ($(patsubst %,$(objpfx)crt%.o,i n)): Likewise.
[crti.S in sysdirs] ($(objpfx)defs.h): Likewise.
[crti.S in sysdirs] (initfini.c): Remove vpath directive.
* sysdeps/i386/crti.S, sysdeps/i386/crtn.S: New files, based on
compiler output for sysdeps/generic/initfini.c.
* sysdeps/i386/elf/Makefile: Remove file.
* sysdeps/i386/Makefile (CFLAGS-initfini.s): Remove variable.
Index: glibc-2.15/csu/Makefile
===================================================================
--- glibc-2.15.orig/csu/Makefile
+++ glibc-2.15/csu/Makefile
@@ -75,10 +75,6 @@ before-compile += $(objpfx)abi-tag.h
generated += abi-tag.h
endif
-ifeq ($(have-initfini),yes)
-
-CPPFLAGS += -DHAVE_INITFINI
-
# These are the special initializer/finalizer files. They are always the
# first and last file in the link. crti.o ... crtn.o define the global
# "functions" _init and _fini to run the .init and .fini sections.
@@ -86,6 +82,13 @@ crtstuff = crti crtn
install-lib += $(crtstuff:=.o)
extra-objs += $(crtstuff:=.o)
+
+# Conditionals on the existence of a sysdeps version of crti.S are
+# temporary until all targets either have such a file or have been
+# removed, after which the old approach of postprocessing compiler
+# output will be removed.
+ifeq (,$(wildcard $(sysdirs:%=%/crti.S)))
+
generated += $(crtstuff:=.S) initfini.s defs.h
omit-deps += $(crtstuff)
Index: glibc-2.15/nptl/Makefile
===================================================================
--- glibc-2.15.orig/nptl/Makefile
+++ glibc-2.15/nptl/Makefile
@@ -335,15 +335,22 @@ ifneq (,$(patsubst .,,$(multidir)))
generated-dirs := $(firstword $(subst /, , $(multidir)))
crti-objs += $(multidir)/crti.o
crtn-objs += $(multidir)/crtn.o
+# Conditionals on the existence of a sysdeps version of crti.S are
+# temporary until all targets either have such a file or have been
+# removed, after which the old approach of postprocessing compiler
+# output will be removed.
+ifeq (,$(wildcard $(sysdirs:%=%/crti.S)))
omit-deps += $(multidir)/crti $(multidir)/crtn
+endif
$(objpfx)$(multidir):
mkdir -p $@
endif
extra-objs += $(crti-objs) $(crtn-objs)
+ifeq (,$(wildcard $(sysdirs:%=%/crti.S)))
omit-deps += crti crtn
-
CFLAGS-pt-initfini.s = -g0 -fPIC -fno-inline-functions $(fno-unit-at-a-time) -fno-unwind-tables -fno-asynchronous-unwind-tables
endif
+endif
CFLAGS-flockfile.c = -D_IO_MTSAFE_IO
CFLAGS-ftrylockfile.c = -D_IO_MTSAFE_IO
@@ -543,15 +550,24 @@ $(addprefix $(objpfx),$(tests) $(test-sr
endif
ifeq ($(build-shared),yes)
+ifeq (,$(wildcard $(sysdirs:%=%/crti.S)))
vpath pt-initfini.c $(sysdirs)
$(objpfx)pt-initfini.s: pt-initfini.c
$(compile.c) -S $(CFLAGS-pt-initfini.s) -finhibit-size-directive \
$(patsubst -f%,-fno-%,$(exceptions)) -o $@
+endif
$(objpfx)tst-cleanup0.out: /dev/null $(objpfx)tst-cleanup0
$(make-test-out) 2>&1 | cmp - tst-cleanup0.expect > $@
+ifneq (,$(wildcard $(sysdirs:%=%/crti.S)))
+
+$(objpfx)crti.o: $(objpfx)pt-crti.o
+ ln -f $< $@
+
+else
+
# We only have one kind of startup code files. Static binaries and
# shared libraries are build using the PIC version.
$(objpfx)crti.S: $(objpfx)pt-initfini.s
@@ -573,6 +589,8 @@ $(objpfx)crti.o: $(objpfx)crti.S $(objpf
$(objpfx)crtn.o: $(objpfx)crtn.S $(objpfx)defs.h
$(compile.S) -g0 $(ASFLAGS-.os) -o $@
+endif
+
ifneq ($(multidir),.)
$(objpfx)$(multidir)/crti.o: $(objpfx)crti.o $(objpfx)$(multidir)/
ln -f $< $@
Index: glibc-2.15/nptl/pt-crti.S
===================================================================
--- /dev/null
+++ glibc-2.15/nptl/pt-crti.S
@@ -0,0 +1,44 @@
+/* Special .init and .fini section support for libpthread.
+ Copyright (C) 2012 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ In addition to the permissions in the GNU Lesser 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 GNU Lesser 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.)
+
+ Note that people who make modified versions of this file are not
+ obligated to grant this special exception for their modified
+ versions; it is their choice whether to do so. The GNU Lesser
+ General Public License gives permission to release a modified
+ version without this exception; this exception also makes it
+ possible to release a modified version which carries forward this
+ exception.
+
+ The GNU C Library 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+/* Arrange for __pthread_initialize_minimal_internal to be called at
+ libpthread startup, instead of conditionally calling
+ __gmon_start__. */
+
+#define PREINIT_FUNCTION __pthread_initialize_minimal_internal
+#define PREINIT_FUNCTION_WEAK 0
+
+#include <crti.S>
Index: glibc-2.15/sysdeps/i386/Makefile
===================================================================
--- glibc-2.15.orig/sysdeps/i386/Makefile
+++ glibc-2.15/sysdeps/i386/Makefile
@@ -5,12 +5,6 @@ asm-CPPFLAGS += -DGAS_SYNTAX
# The i386 `long double' is a distinct type we support.
long-double-fcts = yes
-ifeq ($(subdir),csu)
-# On i686 we must avoid generating the trampoline functions generated
-# to get the GOT pointer.
-CFLAGS-initfini.s += -march=i386 -mtune=i386
-endif
-
ifeq ($(subdir),gmon)
sysdep_routines += i386-mcount
endif
Index: glibc-2.15/sysdeps/i386/crti.S
===================================================================
--- /dev/null
+++ glibc-2.15/sysdeps/i386/crti.S
@@ -0,0 +1,85 @@
+/* Special .init and .fini section support for x86.
+ Copyright (C) 1995-2012 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ In addition to the permissions in the GNU Lesser 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 GNU Lesser 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.)
+
+ Note that people who make modified versions of this file are not
+ obligated to grant this special exception for their modified
+ versions; it is their choice whether to do so. The GNU Lesser
+ General Public License gives permission to release a modified
+ version without this exception; this exception also makes it
+ possible to release a modified version which carries forward this
+ exception.
+
+ The GNU C Library 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+/* crti.S puts a function prologue at the beginning of the .init and
+ .fini sections and defines global symbols for those addresses, so
+ they can be called as functions. The symbols _init and _fini are
+ magic and cause the linker to emit DT_INIT and DT_FINI. */
+
+#include <libc-symbols.h>
+#include <sysdep.h>
+
+#ifndef PREINIT_FUNCTION
+# define PREINIT_FUNCTION __gmon_start__
+#endif
+
+#ifndef PREINIT_FUNCTION_WEAK
+# define PREINIT_FUNCTION_WEAK 1
+#endif
+
+#if PREINIT_FUNCTION_WEAK
+ weak_extern (PREINIT_FUNCTION)
+#else
+ .hidden PREINIT_FUNCTION
+#endif
+
+ .section .init,"ax",@progbits
+ .p2align 2
+ .globl _init
+ .type _init, @function
+_init:
+ pushl %ebx
+ /* Maintain 16-byte stack alignment for called functions. */
+ subl $8, %esp
+ LOAD_PIC_REG (bx)
+#if PREINIT_FUNCTION_WEAK
+ movl PREINIT_FUNCTION@GOT(%ebx), %eax
+ testl %eax, %eax
+ je .Lno_weak_fn
+ call PREINIT_FUNCTION@PLT
+.Lno_weak_fn:
+#else
+ call PREINIT_FUNCTION
+#endif
+
+ .section .fini,"ax",@progbits
+ .p2align 2
+ .globl _fini
+ .type _fini, @function
+_fini:
+ pushl %ebx
+ subl $8, %esp
+ LOAD_PIC_REG (bx)
Index: glibc-2.15/sysdeps/i386/crtn.S
===================================================================
--- /dev/null
+++ glibc-2.15/sysdeps/i386/crtn.S
@@ -0,0 +1,48 @@
+/* Special .init and .fini section support for x86.
+ Copyright (C) 1995-2012 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ In addition to the permissions in the GNU Lesser 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 GNU Lesser 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.)
+
+ Note that people who make modified versions of this file are not
+ obligated to grant this special exception for their modified
+ versions; it is their choice whether to do so. The GNU Lesser
+ General Public License gives permission to release a modified
+ version without this exception; this exception also makes it
+ possible to release a modified version which carries forward this
+ exception.
+
+ The GNU C Library 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+/* crtn.S puts function epilogues in the .init and .fini sections
+ corresponding to the prologues in crti.S. */
+
+ .section .init,"ax",@progbits
+ addl $8, %esp
+ popl %ebx
+ ret
+
+ .section .fini,"ax",@progbits
+ addl $8, %esp
+ popl %ebx
+ ret
Index: glibc-2.15/sysdeps/i386/elf/Makefile
===================================================================
--- glibc-2.15.orig/sysdeps/i386/elf/Makefile
+++ /dev/null
@@ -1,4 +0,0 @@
-ifeq ($(subdir),csu)
-# Turn off -fasynchronous-unwind-tables
-CFLAGS-initfini.s += -fno-asynchronous-unwind-tables
-endif
Index: glibc-2.15/Makeconfig
===================================================================
--- glibc-2.15.orig/Makeconfig
+++ glibc-2.15/Makeconfig
@@ -394,11 +394,6 @@ ifndef asm-CPPFLAGS
asm-CPPFLAGS =
endif
-# ELF always supports init/fini sections
-ifeq ($(elf),yes)
-have-initfini = yes
-endif
-
ifeq ($(have-as-needed),yes)
as-needed := -Wl,--as-needed
no-as-needed := -Wl,--no-as-needed
@@ -412,14 +407,8 @@ no-whole-archive = -Wl,--no-whole-archiv
whole-archive = -Wl,--whole-archive
# Installed name of the startup code.
-ifneq ($(have-initfini),yes)
-# When not having init/fini, there is just one startfile, called crt0.o.
-start-installed-name = crt0.o
-else
-# On systems having init/fini, crt0.o is called crt1.o, and there are
-# some additional bizarre files.
+# The ELF convention is that the startfile is called crt1.o
start-installed-name = crt1.o
-endif
# On systems that do not need a special startfile for statically linked
# binaries, simply set it to the normal name.
ifndef static-start-installed-name
Index: glibc-2.15/config.h.in
===================================================================
--- glibc-2.15.orig/config.h.in
+++ glibc-2.15/config.h.in
@@ -42,9 +42,6 @@
assembler instructions per line. Default is `;' */
#undef ASM_LINE_SEP
-/* Define if not using ELF, but `.init' and `.fini' sections are available. */
-#undef HAVE_INITFINI
-
/* Define if __attribute__((section("foo"))) puts quotes around foo. */
#undef HAVE_SECTION_QUOTES
Index: glibc-2.15/config.make.in
===================================================================
--- glibc-2.15.orig/config.make.in
+++ glibc-2.15/config.make.in
@@ -48,11 +48,9 @@ all-warnings = @all_warnings@
elf = @elf@
have-z-combreloc = @libc_cv_z_combreloc@
have-z-execstack = @libc_cv_z_execstack@
-have-initfini = @libc_cv_have_initfini@
have-Bgroup = @libc_cv_Bgroup@
have-as-needed = @libc_cv_as_needed@
libgcc_s_suffix = @libc_cv_libgcc_s_suffix@
-need-nopic-initfini = @nopic_initfini@
with-fp = @with_fp@
old-glibc-headers = @old_glibc_headers@
unwind-find-fde = @libc_cv_gcc_unwind_find_fde@
Index: glibc-2.15/configure
===================================================================
--- glibc-2.15.orig/configure
+++ glibc-2.15/configure
@@ -610,7 +610,6 @@ RELEASE
VERSION
mach_interface_list
DEFINES
-nopic_initfini
static_nss
bounded
omitfp
@@ -7995,7 +7994,6 @@ $as_echo "$libc_cv_pic_default" >&6; }
-
Index: glibc-2.15/configure.in
===================================================================
--- glibc-2.15.orig/configure.in
+++ glibc-2.15/configure.in
@@ -2377,7 +2377,6 @@ AC_SUBST(profile)
AC_SUBST(omitfp)
AC_SUBST(bounded)
AC_SUBST(static_nss)
-AC_SUBST(nopic_initfini)
AC_SUBST(DEFINES)
Index: glibc-2.15/csu/gmon-start.c
===================================================================
--- glibc-2.15.orig/csu/gmon-start.c
+++ glibc-2.15/csu/gmon-start.c
@@ -1,5 +1,5 @@
/* Code to enable profiling at program startup.
- Copyright (C) 1995,1996,1997,2000,2001,2002 Free Software Foundation, Inc.
+ Copyright (C) 1995,1996,1997,2000,2001,2002,2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -43,23 +43,14 @@ extern char etext[];
# endif
#endif
-#ifndef HAVE_INITFINI
-/* This function gets called at startup by the normal constructor
- mechanism. We link this file together with start.o to produce gcrt1.o,
- so this constructor will be first in the list. */
-
-extern void __gmon_start__ (void) __attribute__ ((constructor));
-#else
-/* In ELF and COFF, we cannot use the normal constructor mechanism to call
+/* We cannot use the normal constructor mechanism to call
__gmon_start__ because gcrt1.o appears before crtbegin.o in the link.
- Instead crti.o calls it specially (see initfini.c). */
+ Instead crti.o calls it specially. */
extern void __gmon_start__ (void);
-#endif
void
__gmon_start__ (void)
{
-#ifdef HAVE_INITFINI
/* Protect from being called more than once. Since crti.o is linked
into every shared library, each of their init functions will call us. */
static int called;
@@ -68,7 +59,6 @@ __gmon_start__ (void)
return;
called = 1;
-#endif
/* Start keeping profiling records. */
__monstartup ((u_long) TEXT_START, (u_long) &etext);
Index: glibc-2.15/sysdeps/powerpc/powerpc32/crti.S
===================================================================
--- /dev/null
+++ glibc-2.15/sysdeps/powerpc/powerpc32/crti.S
@@ -0,0 +1,90 @@
+/* Special .init and .fini section support for PowerPC.
+ Copyright (C) 2012 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ In addition to the permissions in the GNU Lesser 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 GNU Lesser 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.)
+
+ Note that people who make modified versions of this file are not
+ obligated to grant this special exception for their modified
+ versions; it is their choice whether to do so. The GNU Lesser
+ General Public License gives permission to release a modified
+ version without this exception; this exception also makes it
+ possible to release a modified version which carries forward this
+ exception.
+
+ The GNU C Library 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+/* crti.S puts a function prologue at the beginning of the .init and
+ .fini sections and defines global symbols for those addresses, so
+ they can be called as functions. The symbols _init and _fini are
+ magic and cause the linker to emit DT_INIT and DT_FINI. */
+
+#include <libc-symbols.h>
+#include <sysdep.h>
+
+#ifndef PREINIT_FUNCTION
+# define PREINIT_FUNCTION __gmon_start__
+#endif
+
+#ifndef PREINIT_FUNCTION_WEAK
+# define PREINIT_FUNCTION_WEAK 1
+#endif
+
+#if PREINIT_FUNCTION_WEAK
+ weak_extern (PREINIT_FUNCTION)
+#else
+ .hidden PREINIT_FUNCTION
+#endif
+
+ .section .init,"ax",@progbits
+ .align 2
+ .globl _init
+ .type _init, @function
+_init:
+ stwu r1, -16(r1)
+ mflr r0
+ stw r0, 20(r1)
+ stw r30, 8(r1)
+ SETUP_GOT_ACCESS (r30, .Lgot_label_i)
+ addis r30, r30, _GLOBAL_OFFSET_TABLE_-.Lgot_label_i@ha
+ addi r30, r30, _GLOBAL_OFFSET_TABLE_-.Lgot_label_i@l
+#if PREINIT_FUNCTION_WEAK
+ lwz r0, PREINIT_FUNCTION@got(r30)
+ cmpwi cr7, r0, 0
+ beq+ cr7, 1f
+ bl PREINIT_FUNCTION@plt
+1:
+#else
+ bl PREINIT_FUNCTION@local
+#endif
+
+ .section .fini,"ax",@progbits
+ .align 2
+ .globl _fini
+ .type _fini, @function
+_fini:
+ stwu r1, -16(r1)
+ mflr r0
+ stw r0, 20(r1)
+ stw r30, 8(r1)
+ SETUP_GOT_ACCESS (r30, .Lgot_label_f)
Index: glibc-2.15/sysdeps/powerpc/powerpc32/crtn.S
===================================================================
--- /dev/null
+++ glibc-2.15/sysdeps/powerpc/powerpc32/crtn.S
@@ -0,0 +1,54 @@
+/* Special .init and .fini section support for PowerPC.
+ Copyright (C) 2012 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ In addition to the permissions in the GNU Lesser 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 GNU Lesser 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.)
+
+ Note that people who make modified versions of this file are not
+ obligated to grant this special exception for their modified
+ versions; it is their choice whether to do so. The GNU Lesser
+ General Public License gives permission to release a modified
+ version without this exception; this exception also makes it
+ possible to release a modified version which carries forward this
+ exception.
+
+ The GNU C Library 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+/* crtn.S puts function epilogues in the .init and .fini sections
+ corresponding to the prologues in crti.S. */
+
+#include <sysdep.h>
+
+ .section .init,"ax",@progbits
+ lwz r0, 20(r1)
+ mtlr r0
+ lwz r30, 8(r1)
+ addi r1, r1, 16
+ blr
+
+ .section .fini,"ax",@progbits
+ lwz r0, 20(r1)
+ mtlr r0
+ lwz r30, 8(r1)
+ addi r1, r1, 16
+ blr
Index: glibc-2.15/sysdeps/powerpc/powerpc64/crti.S
===================================================================
--- /dev/null
+++ glibc-2.15/sysdeps/powerpc/powerpc64/crti.S
@@ -0,0 +1,107 @@
+/* Special .init and .fini section support for PowerPC64.
+ Copyright (C) 2012 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ In addition to the permissions in the GNU Lesser 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 GNU Lesser 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.)
+
+ Note that people who make modified versions of this file are not
+ obligated to grant this special exception for their modified
+ versions; it is their choice whether to do so. The GNU Lesser
+ General Public License gives permission to release a modified
+ version without this exception; this exception also makes it
+ possible to release a modified version which carries forward this
+ exception.
+
+ The GNU C Library 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+/* crti.S puts a function prologue at the beginning of the .init and
+ .fini sections and defines global symbols for those addresses, so
+ they can be called as functions. The symbols _init and _fini are
+ magic and cause the linker to emit DT_INIT and DT_FINI. */
+
+#include <libc-symbols.h>
+#include <sysdep.h>
+
+#ifndef PREINIT_FUNCTION
+# define PREINIT_FUNCTION __gmon_start__
+#endif
+
+#ifndef PREINIT_FUNCTION_WEAK
+# define PREINIT_FUNCTION_WEAK 1
+#endif
+
+#if PREINIT_FUNCTION_WEAK
+ weak_extern (PREINIT_FUNCTION)
+#else
+ .hidden PREINIT_FUNCTION
+#endif
+
+#if PREINIT_FUNCTION_WEAK
+ .section ".toc", "aw"
+.LC0:
+ .tc PREINIT_FUNCTION[TC], PREINIT_FUNCTION
+#endif
+ .type BODY_LABEL (_init), @function
+ .globl _init
+ .section ".opd", "aw"
+ .align 3
+_init: OPD_ENT (_init)
+#ifdef HAVE_ASM_GLOBAL_DOT_NAME
+ .globl BODY_LABEL (_init)
+ .size _init, 24
+#else
+ .type _init, @function
+#endif
+ .section ".init", "ax", @progbits
+ .align ALIGNARG (2)
+BODY_LABEL (_init):
+ mflr 0
+ std 0, 16(r1)
+ stdu r1, -112(r1)
+#if PREINIT_FUNCTION_WEAK
+ addis r9, r2, .LC0@toc@ha
+ ld r0, .LC0@toc@l(r9)
+ cmpdi cr7, r0, 0
+ beq+ cr7, 1f
+#endif
+ bl JUMPTARGET (PREINIT_FUNCTION)
+ nop
+1:
+
+ .type BODY_LABEL (_fini), @function
+ .globl _fini
+ .section ".opd", "aw"
+ .align 3
+_fini: OPD_ENT (_fini)
+#ifdef HAVE_ASM_GLOBAL_DOT_NAME
+ .globl BODY_LABEL (_fini)
+ .size _fini, 24
+#else
+ .type _fini, @function
+#endif
+ .section ".fini", "ax", @progbits
+ .align ALIGNARG (2)
+BODY_LABEL (_fini):
+ mflr 0
+ std 0, 16(r1)
+ stdu r1, -112(r1)
Index: glibc-2.15/sysdeps/powerpc/powerpc64/crtn.S
===================================================================
--- /dev/null
+++ glibc-2.15/sysdeps/powerpc/powerpc64/crtn.S
@@ -0,0 +1,52 @@
+/* Special .init and .fini section support for PowerPC64.
+ Copyright (C) 2012 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ In addition to the permissions in the GNU Lesser 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 GNU Lesser 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.)
+
+ Note that people who make modified versions of this file are not
+ obligated to grant this special exception for their modified
+ versions; it is their choice whether to do so. The GNU Lesser
+ General Public License gives permission to release a modified
+ version without this exception; this exception also makes it
+ possible to release a modified version which carries forward this
+ exception.
+
+ The GNU C Library 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+/* crtn.S puts function epilogues in the .init and .fini sections
+ corresponding to the prologues in crti.S. */
+
+#include <sysdep.h>
+
+ .section .init,"ax",@progbits
+ addi r1, r1, 112
+ ld r0, 16(r1)
+ mtlr r0
+ blr
+
+ .section .fini,"ax",@progbits
+ addi r1, r1, 112
+ ld r0, 16(r1)
+ mtlr r0
+ blr
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