X-Git-Url: http://git.sourceforge.jp/view?p=pf3gnuchains%2Fgcc-fork.git;a=blobdiff_plain;f=gcc%2Fcrtstuff.c;h=2b6b779920949813a8876367dc86d4290c9336f7;hp=8e50ac740d7150e72a6812f1378b993af3acdc15;hb=06b9e52b8e4c071a2846fdf9931e48b640230cff;hpb=ebd9163c5ddd672de26ee4a9de9d9d909e7b9834
diff --git a/gcc/crtstuff.c b/gcc/crtstuff.c
index 8e50ac740d7..2b6b7799209 100644
--- a/gcc/crtstuff.c
+++ b/gcc/crtstuff.c
@@ -1,32 +1,31 @@
/* Specialized bits of code needed to support construction and
destruction of file-scope objects in C++ code.
- Copyright (C) 1991, 94, 95, 96, 97, 1998 Free Software Foundation, Inc.
+ Copyright (C) 1991, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
+ 2002, 2003, 2004, 2005, 2006, 2007, 2009 Free Software Foundation, Inc.
Contributed by Ron Guilmette (rfg@monkeys.com).
-This file is part of GNU CC.
+This file is part of GCC.
-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.
+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 3, 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.
+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 GNU CC; see the file COPYING. If not, write to
-the Free Software Foundation, 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA. */
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
-/* 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. */
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+. */
-/* This file is a bit like libgcc1.c/libgcc2.c in that it is compiled
+/* This file is a bit like libgcc2.c in that it is compiled
multiple times and yields multiple .o files.
This file is useful on target machines where the object file format
@@ -47,41 +46,112 @@ Boston, MA 02111-1307, USA. */
This file must be compiled with gcc. */
-/* It is incorrect to include config.h here, because this file is being
- compiled for the target, and hence definitions concerning only the host
- do not apply. */
-
+/* Target machine header files require this define. */
+#define IN_LIBGCC2
+
+/* FIXME: Including auto-host is incorrect, but until we have
+ identified the set of defines that need to go into auto-target.h,
+ this will have to do. */
+#include "auto-host.h"
+#undef pid_t
+#undef rlim_t
+#undef ssize_t
+#undef vfork
+#include "tconfig.h"
+#include "tsystem.h"
+#include "coretypes.h"
#include "tm.h"
-#include "defaults.h"
-#include
-#include "frame.h"
+#include "unwind-dw2-fde.h"
-/* Provide default definitions for the pseudo-ops used to switch to the
- .ctors and .dtors sections.
-
- Note that we want to give these sections the SHF_WRITE attribute
- because these sections will actually contain data (i.e. tables of
- addresses of functions in the current root executable or shared library
- file) and, in the case of a shared library, the relocatable addresses
- will have to be properly resolved/relocated (and then written into) by
- the dynamic linker when it actually attaches the given shared library
- to the executing process. (Note that on SVR4, you may wish to use the
- `-z text' option to the ELF linker, when building a shared library, as
- an additional check that you are doing everything right. But if you do
- use the `-z text' option when building a shared library, you will get
- errors unless the .ctors and .dtors sections are marked as writable
- via the SHF_WRITE attribute.) */
-
-#ifndef CTORS_SECTION_ASM_OP
-#define CTORS_SECTION_ASM_OP ".section\t.ctors,\"aw\""
+#ifndef FORCE_CODE_SECTION_ALIGN
+# define FORCE_CODE_SECTION_ALIGN
#endif
-#ifndef DTORS_SECTION_ASM_OP
-#define DTORS_SECTION_ASM_OP ".section\t.dtors,\"aw\""
+
+#ifndef CRT_CALL_STATIC_FUNCTION
+# 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(OBJECT_FORMAT_FLAT) \
+ && defined(HAVE_LD_EH_FRAME_HDR) \
+ && !defined(inhibit_libc) && !defined(CRTSTUFFT_O) \
+ && defined(__FreeBSD__) && __FreeBSD__ >= 7
+#include
+# define USE_PT_GNU_EH_FRAME
+#endif
+
+#if defined(OBJECT_FORMAT_ELF) \
+ && !defined(OBJECT_FORMAT_FLAT) \
+ && defined(HAVE_LD_EH_FRAME_HDR) \
+ && !defined(inhibit_libc) && !defined(CRTSTUFFT_O) \
+ && defined(__GLIBC__) && __GLIBC__ >= 2
+#include
+/* uClibc pretends to be glibc 2.2 and DT_CONFIG is defined in its link.h.
+ But it doesn't use PT_GNU_EH_FRAME ELF segment currently. */
+# if !defined(__UCLIBC__) \
+ && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2) \
+ || (__GLIBC__ == 2 && __GLIBC_MINOR__ == 2 && defined(DT_CONFIG)))
+# define USE_PT_GNU_EH_FRAME
+# endif
+#endif
+#if defined(EH_FRAME_SECTION_NAME) && !defined(USE_PT_GNU_EH_FRAME)
+# define USE_EH_FRAME_REGISTRY
+#endif
+#if defined(EH_FRAME_SECTION_NAME) && EH_TABLES_CAN_BE_READ_ONLY
+# define EH_FRAME_SECTION_CONST const
+#else
+# define EH_FRAME_SECTION_CONST
#endif
-#if !defined (EH_FRAME_SECTION_ASM_OP) && defined (DWARF2_UNWIND_INFO) && defined(ASM_OUTPUT_SECTION_NAME)
-#define EH_FRAME_SECTION_ASM_OP ".section\t.eh_frame,\"aw\""
+
+#if !defined(DTOR_LIST_END) && defined(OBJECT_FORMAT_ELF) \
+ && defined(HAVE_GAS_HIDDEN) && !defined(FINI_ARRAY_SECTION_ASM_OP)
+# define HIDDEN_DTOR_LIST_END
#endif
+/* We do not want to add the weak attribute to the declarations of these
+ routines in unwind-dw2-fde.h because that will cause the definition of
+ these symbols to be weak as well.
+
+ This exposes a core issue, how to handle creating weak references vs
+ how to create weak definitions. Either we have to have the definition
+ of TARGET_WEAK_ATTRIBUTE be conditional in the shared header files or
+ have a second declaration if we want a function's references to be weak,
+ but not its definition.
+
+ Making TARGET_WEAK_ATTRIBUTE conditional seems like a good solution until
+ one thinks about scaling to larger problems -- i.e., the condition under
+ which TARGET_WEAK_ATTRIBUTE is active will eventually get far too
+ complicated.
+
+ So, we take an approach similar to #pragma weak -- we have a second
+ declaration for functions that we want to have weak references.
+
+ Neither way is particularly good. */
+
+/* References to __register_frame_info and __deregister_frame_info should
+ be weak in this file if at all possible. */
+extern void __register_frame_info (const void *, struct object *)
+ TARGET_ATTRIBUTE_WEAK;
+extern void __register_frame_info_bases (const void *, struct object *,
+ void *, void *)
+ TARGET_ATTRIBUTE_WEAK;
+extern void *__deregister_frame_info (const void *)
+ TARGET_ATTRIBUTE_WEAK;
+extern void *__deregister_frame_info_bases (const void *)
+ TARGET_ATTRIBUTE_WEAK;
+extern void __do_global_ctors_1 (void);
+
+/* Likewise for _Jv_RegisterClasses. */
+extern void _Jv_RegisterClasses (void *) TARGET_ATTRIBUTE_WEAK;
+
#ifdef OBJECT_FORMAT_ELF
/* Declare a pointer to void function type. */
@@ -92,19 +162,97 @@ typedef void (*func_ptr) (void);
#include "gbl-ctors.h"
-#ifndef ON_EXIT
-#define ON_EXIT(a, b)
-#endif
#define STATIC
#endif /* OBJECT_FORMAT_ELF */
#ifdef CRT_BEGIN
-#ifdef INIT_SECTION_ASM_OP
+/* NOTE: In order to be able to support SVR4 shared libraries, we arrange
+ to have one set of symbols { __CTOR_LIST__, __DTOR_LIST__, __CTOR_END__,
+ __DTOR_END__ } per root executable and also one set of these symbols
+ per shared library. So in any given whole process image, we may have
+ multiple definitions of each of these symbols. In order to prevent
+ these definitions from conflicting with one another, and in order to
+ ensure that the proper lists are used for the initialization/finalization
+ of each individual shared library (respectively), we give these symbols
+ only internal (i.e. `static') linkage, and we also make it a point to
+ refer to only the __CTOR_END__ symbol in crtend.o and the __DTOR_LIST__
+ symbol in crtbegin.o, where they are defined. */
+
+/* The -1 is a flag to __do_global_[cd]tors indicating that this table
+ does not start with a count of elements. */
+#ifdef CTOR_LIST_BEGIN
+CTOR_LIST_BEGIN;
+#elif defined(CTORS_SECTION_ASM_OP)
+/* Hack: force cc1 to switch to .data section early, so that assembling
+ __CTOR_LIST__ does not undo our behind-the-back change to .ctors. */
+static func_ptr force_to_data[1] __attribute__ ((__unused__)) = { };
+asm (CTORS_SECTION_ASM_OP);
+STATIC func_ptr __CTOR_LIST__[1]
+ __attribute__ ((__unused__, aligned(sizeof(func_ptr))))
+ = { (func_ptr) (-1) };
+#else
+STATIC func_ptr __CTOR_LIST__[1]
+ __attribute__ ((__unused__, section(".ctors"), aligned(sizeof(func_ptr))))
+ = { (func_ptr) (-1) };
+#endif /* __CTOR_LIST__ alternatives */
+
+#ifdef DTOR_LIST_BEGIN
+DTOR_LIST_BEGIN;
+#elif defined(DTORS_SECTION_ASM_OP)
+asm (DTORS_SECTION_ASM_OP);
+STATIC func_ptr __DTOR_LIST__[1]
+ __attribute__ ((aligned(sizeof(func_ptr))))
+ = { (func_ptr) (-1) };
+#else
+STATIC func_ptr __DTOR_LIST__[1]
+ __attribute__((section(".dtors"), aligned(sizeof(func_ptr))))
+ = { (func_ptr) (-1) };
+#endif /* __DTOR_LIST__ alternatives */
+
+#ifdef USE_EH_FRAME_REGISTRY
+/* Stick a label at the beginning of the frame unwind info so we can register
+ and deregister it with the exception handling library code. */
+STATIC EH_FRAME_SECTION_CONST char __EH_FRAME_BEGIN__[]
+ __attribute__((section(EH_FRAME_SECTION_NAME), aligned(4)))
+ = { };
+#endif /* USE_EH_FRAME_REGISTRY */
+
+#ifdef JCR_SECTION_NAME
+/* Stick a label at the beginning of the java class registration info
+ so we can register them properly. */
+STATIC void *__JCR_LIST__[]
+ __attribute__ ((unused, section(JCR_SECTION_NAME), aligned(sizeof(void*))))
+ = { };
+#endif /* JCR_SECTION_NAME */
+
+#if defined(INIT_SECTION_ASM_OP) || defined(INIT_ARRAY_SECTION_ASM_OP)
#ifdef OBJECT_FORMAT_ELF
+/* Declare the __dso_handle variable. It should have a unique value
+ in every shared-object; in a main program its value is zero. The
+ object should in any case be protected. This means the instance
+ in one DSO or the main program is not used in another object. The
+ dynamic linker takes care of this. */
+
+#ifdef TARGET_LIBGCC_SDATA_SECTION
+extern void *__dso_handle __attribute__ ((__section__ (TARGET_LIBGCC_SDATA_SECTION)));
+#endif
+#ifdef HAVE_GAS_HIDDEN
+extern void *__dso_handle __attribute__ ((__visibility__ ("hidden")));
+#endif
+#ifdef CRTSTUFFS_O
+void *__dso_handle = &__dso_handle;
+#else
+void *__dso_handle = 0;
+#endif
+
+/* The __cxa_finalize function may not be available so we use only a
+ weak declaration. */
+extern void __cxa_finalize (void *) TARGET_ATTRIBUTE_WEAK;
+
/* Run all the global destructors on exit from the program. */
/* Some systems place the number of pointers in the first word of the
@@ -124,66 +272,121 @@ typedef void (*func_ptr) (void);
the list we left off processing, and we resume at that point,
should we be re-invoked. */
-static char __EH_FRAME_BEGIN__[];
-static func_ptr __DTOR_LIST__[];
-static void
-__do_global_dtors_aux ()
+static void __attribute__((used))
+__do_global_dtors_aux (void)
{
- static func_ptr *p = __DTOR_LIST__ + 1;
- static int completed = 0;
+ static _Bool completed;
- if (completed)
+ if (__builtin_expect (completed, 0))
return;
- while (*p)
- {
- p++;
- (*(p-1)) ();
- }
+#ifdef CRTSTUFFS_O
+ if (__cxa_finalize)
+ __cxa_finalize (__dso_handle);
+#endif
-#ifdef EH_FRAME_SECTION_ASM_OP
- __deregister_frame_info (__EH_FRAME_BEGIN__);
+#ifdef FINI_ARRAY_SECTION_ASM_OP
+ /* If we are using .fini_array then destructors will be run via that
+ mechanism. */
+#elif defined(HIDDEN_DTOR_LIST_END)
+ {
+ /* Safer version that makes sure only .dtors function pointers are
+ called even if the static variable is maliciously changed. */
+ extern func_ptr __DTOR_END__[] __attribute__((visibility ("hidden")));
+ static size_t dtor_idx;
+ const size_t max_idx = __DTOR_END__ - __DTOR_LIST__ - 1;
+ func_ptr f;
+
+ while (dtor_idx < max_idx)
+ {
+ f = __DTOR_LIST__[++dtor_idx];
+ f ();
+ }
+ }
+#else /* !defined (FINI_ARRAY_SECTION_ASM_OP) */
+ {
+ static func_ptr *p = __DTOR_LIST__ + 1;
+ func_ptr f;
+
+ while ((f = *p))
+ {
+ p++;
+ f ();
+ }
+ }
+#endif /* !defined(FINI_ARRAY_SECTION_ASM_OP) */
+
+#ifdef USE_EH_FRAME_REGISTRY
+#ifdef CRT_GET_RFIB_DATA
+ /* If we used the new __register_frame_info_bases interface,
+ make sure that we deregister from the same place. */
+ if (__deregister_frame_info_bases)
+ __deregister_frame_info_bases (__EH_FRAME_BEGIN__);
+#else
+ if (__deregister_frame_info)
+ __deregister_frame_info (__EH_FRAME_BEGIN__);
+#endif
#endif
+
completed = 1;
}
-
/* Stick a call to __do_global_dtors_aux into the .fini section. */
-
-static void __attribute__ ((__unused__))
-fini_dummy ()
+#ifdef FINI_SECTION_ASM_OP
+CRT_CALL_STATIC_FUNCTION (FINI_SECTION_ASM_OP, __do_global_dtors_aux)
+#elif defined (FINI_ARRAY_SECTION_ASM_OP)
+static func_ptr __do_global_dtors_aux_fini_array_entry[]
+ __attribute__ ((__unused__, section(".fini_array")))
+ = { __do_global_dtors_aux };
+#else /* !FINI_SECTION_ASM_OP && !FINI_ARRAY_SECTION_ASM_OP */
+static void __attribute__((used))
+__do_global_dtors_aux_1 (void)
{
- asm (FINI_SECTION_ASM_OP);
- __do_global_dtors_aux ();
-#ifdef FORCE_FINI_SECTION_ALIGN
- FORCE_FINI_SECTION_ALIGN;
-#endif
- asm (TEXT_SECTION_ASM_OP);
+ atexit (__do_global_dtors_aux);
}
+CRT_CALL_STATIC_FUNCTION (INIT_SECTION_ASM_OP, __do_global_dtors_aux_1)
+#endif
-#ifdef EH_FRAME_SECTION_ASM_OP
+#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
-frame_dummy ()
+static void __attribute__((used))
+frame_dummy (void)
{
+#ifdef USE_EH_FRAME_REGISTRY
static struct object object;
- __register_frame_info (__EH_FRAME_BEGIN__, &object);
+#ifdef CRT_GET_RFIB_DATA
+ void *tbase, *dbase;
+ tbase = 0;
+ CRT_GET_RFIB_DATA (dbase);
+ if (__register_frame_info_bases)
+ __register_frame_info_bases (__EH_FRAME_BEGIN__, &object, tbase, dbase);
+#else
+ if (__register_frame_info)
+ __register_frame_info (__EH_FRAME_BEGIN__, &object);
+#endif /* CRT_GET_RFIB_DATA */
+#endif /* USE_EH_FRAME_REGISTRY */
+#ifdef JCR_SECTION_NAME
+ if (__JCR_LIST__[0])
+ {
+ void (*register_classes) (void *) = _Jv_RegisterClasses;
+ __asm ("" : "+r" (register_classes));
+ if (register_classes)
+ register_classes (__JCR_LIST__);
+ }
+#endif /* JCR_SECTION_NAME */
}
-static void __attribute__ ((__unused__))
-init_dummy ()
-{
- asm (INIT_SECTION_ASM_OP);
- frame_dummy ();
-#ifdef FORCE_INIT_SECTION_ALIGN
- FORCE_INIT_SECTION_ALIGN;
-#endif
- asm (TEXT_SECTION_ASM_OP);
-}
-#endif /* EH_FRAME_SECTION_ASM_OP */
+#ifdef INIT_SECTION_ASM_OP
+CRT_CALL_STATIC_FUNCTION (INIT_SECTION_ASM_OP, frame_dummy)
+#else /* defined(INIT_SECTION_ASM_OP) */
+static func_ptr __frame_dummy_init_array_entry[]
+ __attribute__ ((__unused__, section(".init_array")))
+ = { frame_dummy };
+#endif /* !defined(INIT_SECTION_ASM_OP) */
+#endif /* USE_EH_FRAME_REGISTRY || JCR_SECTION_NAME */
#else /* OBJECT_FORMAT_ELF */
@@ -194,139 +397,170 @@ init_dummy ()
INVOKE__main is defined. This has the additional effect of forcing cc1
to switch to the .text section. */
-static void __do_global_ctors_aux ();
-void __do_global_ctors ()
+static void __do_global_ctors_aux (void);
+void
+__do_global_ctors (void)
{
-#ifdef INVOKE__main /* If __main won't actually call __do_global_ctors
- then it doesn't matter what's inside the function.
- The inside of __do_global_ctors_aux is called
- automatically in that case.
- And the Alliant fx2800 linker crashes
- on this reference. So prevent the crash. */
+#ifdef INVOKE__main
+ /* If __main won't actually call __do_global_ctors then it doesn't matter
+ what's inside the function. The inside of __do_global_ctors_aux is
+ called automatically in that case. And the Alliant fx2800 linker
+ crashes on this reference. So prevent the crash. */
__do_global_ctors_aux ();
#endif
}
asm (INIT_SECTION_ASM_OP); /* cc1 doesn't know that we are switching! */
-/* On some svr4 systems, the initial .init section preamble code provided in
- crti.o may do something, such as bump the stack, which we have to
- undo before we reach the function prologue code for __do_global_ctors
- (directly below). For such systems, define the macro INIT_SECTION_PREAMBLE
- to expand into the code needed to undo the actions of the crti.o file. */
-
-#ifdef INIT_SECTION_PREAMBLE
- INIT_SECTION_PREAMBLE;
-#endif
-
/* A routine to invoke all of the global constructors upon entry to the
program. We put this into the .init section (for systems that have
such a thing) so that we can properly perform the construction of
- file-scope static-storage C++ objects within shared libraries. */
+ file-scope static-storage C++ objects within shared libraries. */
-static void
-__do_global_ctors_aux () /* prologue goes in .init section */
+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;
- ON_EXIT (__do_global_dtors, 0);
+ atexit (__do_global_dtors);
}
#endif /* OBJECT_FORMAT_ELF */
-#else /* defined(INIT_SECTION_ASM_OP) */
+#elif defined(HAS_INIT_SECTION) /* ! INIT_SECTION_ASM_OP */
+
+extern void __do_global_dtors (void);
-#ifdef HAS_INIT_SECTION
/* This case is used by the Irix 6 port, which supports named sections but
not an SVR4-style .fini section. __do_global_dtors can be non-static
in this case because we protect it with -hidden_symbol. */
-static char __EH_FRAME_BEGIN__[];
-static func_ptr __DTOR_LIST__[];
void
-__do_global_dtors ()
+__do_global_dtors (void)
{
- func_ptr *p;
- for (p = __DTOR_LIST__ + 1; *p; p++)
- (*p) ();
+ func_ptr *p, f;
+ for (p = __DTOR_LIST__ + 1; (f = *p); p++)
+ f ();
-#ifdef EH_FRAME_SECTION_ASM_OP
- __deregister_frame_info (__EH_FRAME_BEGIN__);
+#ifdef USE_EH_FRAME_REGISTRY
+ if (__deregister_frame_info)
+ __deregister_frame_info (__EH_FRAME_BEGIN__);
#endif
}
-#ifdef EH_FRAME_SECTION_ASM_OP
-/* Define a function here to call __register_frame. crtend.o is linked in
- after libgcc.a, and hence can't call libgcc.a functions directly. That
- can lead to unresolved function references. */
+#if defined(USE_EH_FRAME_REGISTRY) || defined(JCR_SECTION_NAME)
+/* A helper function for __do_global_ctors, which is in crtend.o. Here
+ in crtbegin.o, we can reference a couple of symbols not visible there.
+ Plus, since we're before libgcc.a, we have no problems referencing
+ functions from there. */
void
-__frame_dummy ()
+__do_global_ctors_1(void)
{
+#ifdef USE_EH_FRAME_REGISTRY
static struct object object;
- __register_frame_info (__EH_FRAME_BEGIN__, &object);
-}
+ if (__register_frame_info)
+ __register_frame_info (__EH_FRAME_BEGIN__, &object);
#endif
+#ifdef JCR_SECTION_NAME
+ if (__JCR_LIST__[0])
+ {
+ void (*register_classes) (void *) = _Jv_RegisterClasses;
+ __asm ("" : "+r" (register_classes));
+ if (register_classes)
+ register_classes (__JCR_LIST__);
+ }
#endif
+}
+#endif /* USE_EH_FRAME_REGISTRY || JCR_SECTION_NAME */
-#endif /* defined(INIT_SECTION_ASM_OP) */
+#else /* ! INIT_SECTION_ASM_OP && ! HAS_INIT_SECTION */
+#error "What are you doing with crtstuff.c, then?"
+#endif
-/* Force cc1 to switch to .data section. */
-static func_ptr force_to_data[0] __attribute__ ((__unused__)) = { };
+#elif defined(CRT_END) /* ! CRT_BEGIN */
-/* NOTE: In order to be able to support SVR4 shared libraries, we arrange
- to have one set of symbols { __CTOR_LIST__, __DTOR_LIST__, __CTOR_END__,
- __DTOR_END__ } per root executable and also one set of these symbols
- per shared library. So in any given whole process image, we may have
- multiple definitions of each of these symbols. In order to prevent
- these definitions from conflicting with one another, and in order to
- ensure that the proper lists are used for the initialization/finalization
- of each individual shared library (respectively), we give these symbols
- only internal (i.e. `static') linkage, and we also make it a point to
- refer to only the __CTOR_END__ symbol in crtend.o and the __DTOR_LIST__
- symbol in crtbegin.o, where they are defined. */
+/* Put a word containing zero at the end of each of our two lists of function
+ addresses. Note that the words defined here go into the .ctors and .dtors
+ sections of the crtend.o file, and since that file is always linked in
+ last, these words naturally end up at the very ends of the two lists
+ contained in these two sections. */
-/* The -1 is a flag to __do_global_[cd]tors
- indicating that this table does not start with a count of elements. */
-#ifdef CTOR_LIST_BEGIN
-CTOR_LIST_BEGIN;
+#ifdef CTOR_LIST_END
+CTOR_LIST_END;
+#elif defined(CTORS_SECTION_ASM_OP)
+/* Hack: force cc1 to switch to .data section early, so that assembling
+ __CTOR_LIST__ does not undo our behind-the-back change to .ctors. */
+static func_ptr force_to_data[1] __attribute__ ((__unused__)) = { };
+asm (CTORS_SECTION_ASM_OP);
+STATIC func_ptr __CTOR_END__[1]
+ __attribute__((aligned(sizeof(func_ptr))))
+ = { (func_ptr) 0 };
#else
-asm (CTORS_SECTION_ASM_OP); /* cc1 doesn't know that we are switching! */
-STATIC func_ptr __CTOR_LIST__[1] __attribute__ ((__unused__))
- = { (func_ptr) (-1) };
+STATIC func_ptr __CTOR_END__[1]
+ __attribute__((section(".ctors"), aligned(sizeof(func_ptr))))
+ = { (func_ptr) 0 };
#endif
-#ifdef DTOR_LIST_BEGIN
-DTOR_LIST_BEGIN;
-#else
-asm (DTORS_SECTION_ASM_OP); /* cc1 doesn't know that we are switching! */
-STATIC func_ptr __DTOR_LIST__[1] = { (func_ptr) (-1) };
+#ifdef DTOR_LIST_END
+DTOR_LIST_END;
+#elif defined(HIDDEN_DTOR_LIST_END)
+#ifdef DTORS_SECTION_ASM_OP
+asm (DTORS_SECTION_ASM_OP);
#endif
-
-#ifdef EH_FRAME_SECTION_ASM_OP
-/* Stick a label at the beginning of the frame unwind info so we can register
- and deregister it with the exception handling library code. */
-
-asm (EH_FRAME_SECTION_ASM_OP);
-#ifdef INIT_SECTION_ASM_OP
-STATIC
+func_ptr __DTOR_END__[1]
+ __attribute__ ((unused,
+#ifndef DTORS_SECTION_ASM_OP
+ section(".dtors"),
+#endif
+ aligned(sizeof(func_ptr)), visibility ("hidden")))
+ = { (func_ptr) 0 };
+#elif defined(DTORS_SECTION_ASM_OP)
+asm (DTORS_SECTION_ASM_OP);
+STATIC func_ptr __DTOR_END__[1]
+ __attribute__ ((unused, aligned(sizeof(func_ptr))))
+ = { (func_ptr) 0 };
+#else
+STATIC func_ptr __DTOR_END__[1]
+ __attribute__((unused, section(".dtors"), aligned(sizeof(func_ptr))))
+ = { (func_ptr) 0 };
#endif
-char __EH_FRAME_BEGIN__[] = { };
-#endif /* EH_FRAME_SECTION_ASM_OP */
-
-#endif /* defined(CRT_BEGIN) */
-
-#ifdef CRT_END
-#ifdef INIT_SECTION_ASM_OP
+#ifdef EH_FRAME_SECTION_NAME
+/* Terminate the frame unwind info section with a 4byte 0 as a sentinel;
+ this would be the 'length' field in a real FDE. */
+# if __INT_MAX__ == 2147483647
+typedef int int32;
+# elif __LONG_MAX__ == 2147483647
+typedef long int32;
+# elif __SHRT_MAX__ == 2147483647
+typedef short int32;
+# else
+# error "Missing a 4 byte integer"
+# endif
+STATIC EH_FRAME_SECTION_CONST int32 __FRAME_END__[]
+ __attribute__ ((unused, section(EH_FRAME_SECTION_NAME),
+ aligned(sizeof(int32))))
+ = { 0 };
+#endif /* EH_FRAME_SECTION_NAME */
+
+#ifdef JCR_SECTION_NAME
+/* Null terminate the .jcr section array. */
+STATIC void *__JCR_END__[1]
+ __attribute__ ((unused, section(JCR_SECTION_NAME),
+ aligned(sizeof(void *))))
+ = { 0 };
+#endif /* JCR_SECTION_NAME */
+
+#ifdef INIT_ARRAY_SECTION_ASM_OP
+
+/* If we are using .init_array, there is nothing to do. */
+
+#elif defined(INIT_SECTION_ASM_OP)
#ifdef OBJECT_FORMAT_ELF
-
-static func_ptr __CTOR_END__[];
-static void
-__do_global_ctors_aux ()
+static void __attribute__((used))
+__do_global_ctors_aux (void)
{
func_ptr *p;
for (p = __CTOR_END__ - 1; *p != (func_ptr) -1; p--)
@@ -334,33 +568,7 @@ __do_global_ctors_aux ()
}
/* Stick a call to __do_global_ctors_aux into the .init section. */
-
-static void __attribute__ ((__unused__))
-init_dummy ()
-{
- asm (INIT_SECTION_ASM_OP);
- __do_global_ctors_aux ();
-#ifdef FORCE_INIT_SECTION_ALIGN
- FORCE_INIT_SECTION_ALIGN;
-#endif
- asm (TEXT_SECTION_ASM_OP);
-
-/* 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. */
-
-#if defined(__linux__) && defined(__PIC__) && defined(__i386__)
- {
- extern void *___brk_addr;
- extern char **__environ;
-
- ___brk_addr = __environ;
- atexit ();
- }
-#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
@@ -385,76 +593,40 @@ init_dummy ()
before we start to execute any of the user's code. */
static void
-__do_global_ctors_aux () /* prologue goes in .text section */
+__do_global_ctors_aux (void) /* prologue goes in .text section */
{
asm (INIT_SECTION_ASM_OP);
DO_GLOBAL_CTORS_BODY;
- ON_EXIT (__do_global_dtors, 0);
+ 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 */
-#else /* defined(INIT_SECTION_ASM_OP) */
+#elif defined(HAS_INIT_SECTION) /* ! INIT_SECTION_ASM_OP */
+
+extern void __do_global_ctors (void);
-#ifdef HAS_INIT_SECTION
/* This case is used by the Irix 6 port, which supports named sections but
not an SVR4-style .init section. __do_global_ctors can be non-static
in this case because we protect it with -hidden_symbol. */
-static func_ptr __CTOR_END__[];
-#ifdef EH_FRAME_SECTION_ASM_OP
-extern void __frame_dummy (void);
-#endif
void
-__do_global_ctors ()
+__do_global_ctors (void)
{
func_ptr *p;
-#ifdef EH_FRAME_SECTION_ASM_OP
- __frame_dummy ();
+#if defined(USE_EH_FRAME_REGISTRY) || defined(JCR_SECTION_NAME)
+ __do_global_ctors_1();
#endif
for (p = __CTOR_END__ - 1; *p != (func_ptr) -1; p--)
(*p) ();
}
-#endif
-
-#endif /* defined(INIT_SECTION_ASM_OP) */
-/* Force cc1 to switch to .data section. */
-static func_ptr force_to_data[0] __attribute__ ((__unused__)) = { };
-
-/* Put a word containing zero at the end of each of our two lists of function
- addresses. Note that the words defined here go into the .ctors and .dtors
- sections of the crtend.o file, and since that file is always linked in
- last, these words naturally end up at the very ends of the two lists
- contained in these two sections. */
-
-#ifdef CTOR_LIST_END
-CTOR_LIST_END;
-#else
-asm (CTORS_SECTION_ASM_OP); /* cc1 doesn't know that we are switching! */
-STATIC func_ptr __CTOR_END__[1] = { (func_ptr) 0 };
+#else /* ! INIT_SECTION_ASM_OP && ! HAS_INIT_SECTION */
+#error "What are you doing with crtstuff.c, then?"
#endif
-#ifdef DTOR_LIST_END
-DTOR_LIST_END;
-#else
-asm (DTORS_SECTION_ASM_OP); /* cc1 doesn't know that we are switching! */
-STATIC func_ptr __DTOR_END__[1] __attribute__ ((__unused__))
- = { (func_ptr) 0 };
+#else /* ! CRT_BEGIN && ! CRT_END */
+#error "One of CRT_BEGIN or CRT_END must be defined."
#endif
-
-#ifdef EH_FRAME_SECTION_ASM_OP
-/* Terminate the frame unwind info section with a 4byte 0 as a sentinel;
- this would be the 'length' field in a real FDE. */
-
-typedef unsigned int ui32 __attribute__ ((mode (SI)));
-asm (EH_FRAME_SECTION_ASM_OP);
-STATIC ui32 __FRAME_END__[] __attribute__ ((__unused__)) = { 0 };
-#endif /* EH_FRAME_SECTION */
-
-#endif /* defined(CRT_END) */