| /* 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, 2002, 2003, 2004 Free Software Foundation, Inc. |
| Contributed by Ron Guilmette (rfg@monkeys.com). |
| |
| This file is part of GCC. |
| |
| GCC is free software; you can redistribute it and/or modify it under |
| the terms of the GNU General Public License as published by the Free |
| Software Foundation; either version 2, or (at your option) any later |
| version. |
| |
| 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 into combinations with other programs, |
| and to distribute those combinations 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 a combine |
| executable.) |
| |
| GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
| WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GCC; see the file COPYING. If not, write to the Free |
| Software Foundation, 59 Temple Place - Suite 330, Boston, MA |
| 02111-1307, USA. */ |
| |
| /* 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 |
| supports multiple "user-defined" sections (e.g. COFF, ELF, ROSE). On |
| such systems, this file allows us to avoid running collect (or any |
| other such slow and painful kludge). Additionally, if the target |
| system supports a .init section, this file allows us to support the |
| linking of C++ code with a non-C++ main program. |
| |
| Note that if INIT_SECTION_ASM_OP is defined in the tm.h file, then |
| this file *will* make use of the .init section. If that symbol is |
| not defined however, then the .init section will not be used. |
| |
| Currently, only ELF and COFF are supported. It is likely however that |
| ROSE could also be supported, if someone was willing to do the work to |
| make whatever (small?) adaptations are needed. (Some work may be |
| needed on the ROSE assembler and linker also.) |
| |
| 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. */ |
| |
| #define IN_LIBGCC2 |
| |
| /* We include auto-host.h here to get HAVE_GAS_HIDDEN. This is |
| supposedly valid even though this is a "target" file. */ |
| #include "auto-host.h" |
| #include "tconfig.h" |
| #include "tsystem.h" |
| #include "coretypes.h" |
| #include "tm.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(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) \ |
| && !defined(inhibit_libc) && !defined(CRTSTUFFT_O) \ |
| && defined(__GLIBC__) && __GLIBC__ >= 2 |
| #include <link.h> |
| # if (__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 |
| |
| /* 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. */ |
| typedef void (*func_ptr) (void); |
| #define STATIC static |
| |
| #else /* OBJECT_FORMAT_ELF */ |
| |
| #include "gbl-ctors.h" |
| |
| #define STATIC |
| |
| #endif /* OBJECT_FORMAT_ELF */ |
| |
| #ifdef 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. */ |
| |
| /* 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] |
| /* APPLE LOCAL begin LLVM */ |
| #ifdef __llvm__ |
| __attribute__ ((__used__, aligned(sizeof(func_ptr)))) |
| #else |
| __attribute__ ((__unused__, aligned(sizeof(func_ptr)))) |
| #endif |
| /* APPLE LOCAL end LLVM */ |
| = { (func_ptr) (-1) }; |
| #else |
| STATIC func_ptr __CTOR_LIST__[1] |
| /* APPLE LOCAL begin LLVM */ |
| #ifdef __llvm__ |
| __attribute__ ((__used__, section(".ctors"), aligned(sizeof(func_ptr)))) |
| #else |
| __attribute__ ((__unused__, section(".ctors"), aligned(sizeof(func_ptr)))) |
| #endif |
| /* APPLE LOCAL end LLVM */ |
| = { (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] |
| /* LLVM LOCAL begin */ |
| #ifdef __llvm__ |
| __attribute__ ((used, aligned(sizeof(func_ptr)))) |
| #else |
| __attribute__ ((aligned(sizeof(func_ptr)))) |
| #endif |
| /* LLVM LOCAL end */ |
| = { (func_ptr) (-1) }; |
| #else |
| STATIC func_ptr __DTOR_LIST__[1] |
| /* LLVM LOCAL begin */ |
| #ifdef __llvm__ |
| __attribute__((used, section(".dtors"), aligned(sizeof(func_ptr)))) |
| #else |
| __attribute__((section(".dtors"), aligned(sizeof(func_ptr)))) |
| #endif |
| /* LLVM LOCAL end */ |
| = { (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__[] |
| /* LLVM LOCAL begin */ |
| #ifdef __llvm__ |
| __attribute__((used, section(EH_FRAME_SECTION_NAME), aligned(4))) |
| #else |
| __attribute__((section(EH_FRAME_SECTION_NAME), aligned(4))) |
| #endif |
| /* LLVM LOCAL end */ |
| = { }; |
| #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 */ |
| |
| #ifdef INIT_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 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 |
| table. On SVR4 however, that word is -1. In all cases, the table is |
| null-terminated. On SVR4, we start from the beginning of the list and |
| invoke each per-compilation-unit destructor routine in order |
| until we find that null. |
| |
| Note that this function MUST be static. There will be one of these |
| functions in each root executable and one in each shared library, but |
| although they all have the same code, each one is unique in that it |
| refers to one particular associated `__DTOR_LIST__' which belongs to the |
| same particular root executable or shared library file. |
| |
| On some systems, this routine is run more than once from the .fini, |
| when exit is called recursively, so we arrange to remember where in |
| the list we left off processing, and we resume at that point, |
| should we be re-invoked. */ |
| |
| static void __attribute__((used)) |
| __do_global_dtors_aux (void) |
| { |
| static func_ptr *p = __DTOR_LIST__ + 1; |
| static _Bool completed; |
| func_ptr f; |
| |
| if (__builtin_expect (completed, 0)) |
| return; |
| |
| #ifdef CRTSTUFFS_O |
| if (__cxa_finalize) |
| __cxa_finalize (__dso_handle); |
| #endif |
| |
| while ((f = *p)) |
| { |
| p++; |
| f (); |
| } |
| |
| #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. */ |
| 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 __attribute__((used)) |
| frame_dummy (void) |
| { |
| #ifdef USE_EH_FRAME_REGISTRY |
| static struct object 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 */ |
| } |
| |
| CRT_CALL_STATIC_FUNCTION (INIT_SECTION_ASM_OP, frame_dummy) |
| #endif /* USE_EH_FRAME_REGISTRY || JCR_SECTION_NAME */ |
| |
| #else /* OBJECT_FORMAT_ELF */ |
| |
| /* The function __do_global_ctors_aux is compiled twice (once in crtbegin.o |
| and once in crtend.o). It must be declared static to avoid a link |
| error. Here, we define __do_global_ctors as an externally callable |
| function. It is externally callable so that __main can invoke it when |
| 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); |
| 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. */ |
| __do_global_ctors_aux (); |
| #endif |
| } |
| |
| asm (INIT_SECTION_ASM_OP); /* cc1 doesn't know that we are switching! */ |
| |
| /* 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. */ |
| |
| static void __attribute__((used)) |
| __do_global_ctors_aux (void) /* prologue goes in .init section */ |
| { |
| 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); |
| } |
| |
| #endif /* OBJECT_FORMAT_ELF */ |
| |
| #elif defined(HAS_INIT_SECTION) /* ! INIT_SECTION_ASM_OP */ |
| |
| extern void __do_global_dtors (void); |
| |
| /* 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. */ |
| |
| void |
| __do_global_dtors (void) |
| { |
| func_ptr *p, f; |
| for (p = __DTOR_LIST__ + 1; (f = *p); p++) |
| f (); |
| |
| #ifdef USE_EH_FRAME_REGISTRY |
| if (__deregister_frame_info) |
| __deregister_frame_info (__EH_FRAME_BEGIN__); |
| #endif |
| } |
| |
| #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 |
| __do_global_ctors_1(void) |
| { |
| #ifdef USE_EH_FRAME_REGISTRY |
| static struct object 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 */ |
| |
| #else /* ! INIT_SECTION_ASM_OP && ! HAS_INIT_SECTION */ |
| #error "What are you doing with crtstuff.c, then?" |
| #endif |
| |
| #elif defined(CRT_END) /* ! CRT_BEGIN */ |
| |
| /* 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; |
| #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] |
| /* LLVM LOCAL begin */ |
| #ifdef __llvm__ |
| __attribute__((used, aligned(sizeof(func_ptr)))) |
| #else |
| __attribute__((aligned(sizeof(func_ptr)))) |
| #endif |
| /* LLVM LOCAL end */ |
| = { (func_ptr) 0 }; |
| #else |
| STATIC func_ptr __CTOR_END__[1] |
| /* LLVM LOCAL begin */ |
| #ifdef __llvm__ |
| __attribute__((used, section(".ctors"), aligned(sizeof(func_ptr)))) |
| #else |
| __attribute__((section(".ctors"), aligned(sizeof(func_ptr)))) |
| #endif |
| /* LLVM LOCAL end */ |
| = { (func_ptr) 0 }; |
| #endif |
| |
| #ifdef DTOR_LIST_END |
| DTOR_LIST_END; |
| #elif defined(DTORS_SECTION_ASM_OP) |
| asm (DTORS_SECTION_ASM_OP); |
| STATIC func_ptr __DTOR_END__[1] |
| /* APPLE LOCAL begin LLVM */ |
| #ifdef __llvm__ |
| __attribute__ ((__used__, aligned(sizeof(func_ptr)))) |
| #else |
| __attribute__ ((unused, aligned(sizeof(func_ptr)))) |
| #endif |
| /* APPLE LOCAL end LLVM */ |
| = { (func_ptr) 0 }; |
| #else |
| STATIC func_ptr __DTOR_END__[1] |
| /* APPLE LOCAL begin LLVM */ |
| #ifdef __llvm__ |
| /* FIXME: Remove when external weak linkage will be alive. */ |
| __attribute__((__used__, section(".dtors"), aligned(sizeof(func_ptr)))) |
| #else |
| __attribute__((unused, section(".dtors"), aligned(sizeof(func_ptr)))) |
| #endif |
| /* APPLE LOCAL end LLVM */ |
| = { (func_ptr) 0 }; |
| #endif |
| |
| #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_SECTION_ASM_OP |
| |
| #ifdef OBJECT_FORMAT_ELF |
| static void __attribute__((used)) |
| __do_global_ctors_aux (void) |
| { |
| func_ptr *p; |
| for (p = __CTOR_END__ - 1; *p != (func_ptr) -1; p--) |
| (*p) (); |
| } |
| |
| /* Stick a call to __do_global_ctors_aux into the .init section. */ |
| 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 |
| function epilogue at the very end of the .init section for this |
| entire root executable file or for this entire shared library file. |
| |
| Note that we use some tricks here to get *just* the body and just |
| a function epilogue (but no function prologue) into the .init |
| section of the crtend.o file. Specifically, we switch to the .text |
| section, start to define a function, and then we switch to the .init |
| section just before the body code. |
| |
| Earlier on, we put the corresponding function prologue into the .init |
| section of the crtbegin.o file (which will be linked in first). |
| |
| Note that we want to invoke all constructors for C++ file-scope static- |
| storage objects AFTER any other possible initialization actions which |
| may be performed by the code in the .init section contributions made by |
| other libraries, etc. That's because those other initializations may |
| include setup operations for very primitive things (e.g. initializing |
| the state of the floating-point coprocessor, etc.) which should be done |
| before we start to execute any of the user's code. */ |
| |
| static void |
| __do_global_ctors_aux (void) /* prologue goes in .text section */ |
| { |
| asm (INIT_SECTION_ASM_OP); |
| DO_GLOBAL_CTORS_BODY; |
| atexit (__do_global_dtors); |
| } /* epilogue and body go in .init section */ |
| |
| FORCE_CODE_SECTION_ALIGN |
| asm (TEXT_SECTION_ASM_OP); |
| |
| #endif /* OBJECT_FORMAT_ELF */ |
| |
| #elif defined(HAS_INIT_SECTION) /* ! INIT_SECTION_ASM_OP */ |
| |
| extern void __do_global_ctors (void); |
| |
| /* 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. */ |
| void |
| __do_global_ctors (void) |
| { |
| func_ptr *p; |
| #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) (); |
| } |
| |
| #else /* ! INIT_SECTION_ASM_OP && ! HAS_INIT_SECTION */ |
| #error "What are you doing with crtstuff.c, then?" |
| #endif |
| |
| #else /* ! CRT_BEGIN && ! CRT_END */ |
| #error "One of CRT_BEGIN or CRT_END must be defined." |
| #endif |
| |