X-Git-Url: http://git.sourceforge.jp/view?p=pf3gnuchains%2Fgcc-fork.git;a=blobdiff_plain;f=gcc%2Fcrtstuff.c;h=8fdc021d019f10337a62383ed55f94948b2e4546;hp=4c6fc58c0e686fbbb440f98ed9b33d3b32cd6636;hb=4e8e57b0ce67551ca61b7883e73586ba805f0a61;hpb=3cfa3abaa0aea0f9fbdf79af6038b318e7e7371a

diff --git a/gcc/crtstuff.c b/gcc/crtstuff.c
index 4c6fc58c0e6..8fdc021d019 100644
--- a/gcc/crtstuff.c
+++ b/gcc/crtstuff.c
@@ -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, 2003, 2004, 2005 Free Software Foundation, Inc.
    Contributed by Ron Guilmette (rfg@monkeys.com).
 
 This file is part of GCC.
@@ -27,8 +27,8 @@ 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.  */
+Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301, USA.  */
 
 /* This file is a bit like libgcc2.c in that it is compiled
    multiple times and yields multiple .o files.
@@ -51,19 +51,39 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA
 
    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
 
-/* We include auto-host.h here to get HAVE_GAS_HIDDEN.  This is
-   supposedly valid even though this is a "target" file.  */
+/* 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 gid_t
+#undef pid_t
+#undef rlim_t
+#undef ssize_t
+#undef uid_t
+#undef vfork
 #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(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) \
@@ -78,6 +98,11 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA
 #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
@@ -90,7 +115,7 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA
    but not its definition.
 
    Making TARGET_WEAK_ATTRIBUTE conditional seems like a good solution until
-   one thinks about scaling to larger problems -- ie, the condition under
+   one thinks about scaling to larger problems -- i.e., the condition under
    which TARGET_WEAK_ATTRIBUTE is active will eventually get far too
    complicated.
 
@@ -101,21 +126,20 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA
    
 /* References to __register_frame_info and __deregister_frame_info should
    be weak in this file if at all possible.  */
-extern void __register_frame_info (void *, struct object *)
+extern void __register_frame_info (const void *, struct object *)
 				  TARGET_ATTRIBUTE_WEAK;
-extern void __register_frame_info_bases (void *, struct object *,
+extern void __register_frame_info_bases (const void *, struct object *,
 					 void *, void *)
 				  TARGET_ATTRIBUTE_WEAK;
-extern void *__deregister_frame_info (void *)
+extern void *__deregister_frame_info (const void *)
 				     TARGET_ATTRIBUTE_WEAK;
-extern void *__deregister_frame_info_bases (void *)
+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;
 
-#ifndef OBJECT_FORMAT_MACHO
-
 #ifdef OBJECT_FORMAT_ELF
 
 /*  Declare a pointer to void function type.  */
@@ -175,13 +199,13 @@ STATIC func_ptr __DTOR_LIST__[1]
   = { (func_ptr) (-1) };
 #endif /* __DTOR_LIST__ alternatives */
 
-#ifdef EH_FRAME_SECTION_NAME
+#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 char __EH_FRAME_BEGIN__[]
+STATIC EH_FRAME_SECTION_CONST char __EH_FRAME_BEGIN__[]
      __attribute__((section(EH_FRAME_SECTION_NAME), aligned(4)))
      = { };
-#endif /* EH_FRAME_SECTION_NAME */
+#endif /* USE_EH_FRAME_REGISTRY */
 
 #ifdef JCR_SECTION_NAME
 /* Stick a label at the beginning of the java class registration info
@@ -191,7 +215,7 @@ STATIC void *__JCR_LIST__[]
   = { };
 #endif /* JCR_SECTION_NAME */
 
-#ifdef INIT_SECTION_ASM_OP
+#if defined(INIT_SECTION_ASM_OP) || defined(INIT_ARRAY_SECTION_ASM_OP)
 
 #ifdef OBJECT_FORMAT_ELF
 
@@ -201,13 +225,12 @@ STATIC void *__JCR_LIST__[]
    in one DSO or the main program is not used in another object.  The
    dynamic linker takes care of this.  */
 
-/* XXX Ideally the following should be implemented using
-       __attribute__ ((__visibility__ ("hidden")))
-   but the __attribute__ support is not yet there.  */
+#ifdef TARGET_LIBGCC_SDATA_SECTION
+extern void *__dso_handle __attribute__ ((__section__ (TARGET_LIBGCC_SDATA_SECTION)));
+#endif
 #ifdef HAVE_GAS_HIDDEN
-asm (".hidden\t__dso_handle");
+extern void *__dso_handle __attribute__ ((__visibility__ ("hidden")));
 #endif
-
 #ifdef CRTSTUFFS_O
 void *__dso_handle = &__dso_handle;
 #else
@@ -237,12 +260,14 @@ 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)
 {
+#ifndef FINI_ARRAY_SECTION_ASM_OP
   static func_ptr *p = __DTOR_LIST__ + 1;
-  static int completed;
   func_ptr f;
+#endif /* !defined(FINI_ARRAY_SECTION_ASM_OP)  */
+  static _Bool completed;
 
   if (__builtin_expect (completed, 0))
     return;
@@ -252,14 +277,19 @@ __do_global_dtors_aux (void)
     __cxa_finalize (__dso_handle);
 #endif
 
+#ifdef FINI_ARRAY_SECTION_ASM_OP
+  /* If we are using .fini_array then destructors will be run via that
+     mechanism.  */
+#else /* !defined (FINI_ARRAY_SECTION_ASM_OP) */
   while ((f = *p))
     {
       p++;
       f ();
     }
+#endif /* !defined(FINI_ARRAY_SECTION_ASM_OP) */
 
 #ifdef USE_EH_FRAME_REGISTRY
-#if defined(CRT_GET_RFIB_TEXT) || defined(CRT_GET_RFIB_DATA)
+#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)
@@ -273,66 +303,55 @@ __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);
-}
+#ifdef FINI_SECTION_ASM_OP
+CRT_CALL_STATIC_FUNCTION (FINI_SECTION_ASM_OP, __do_global_dtors_aux)
+#else /* !defined(FINI_SECTION_ASM_OP) */
+static func_ptr __do_global_dtors_aux_fini_array_entry[]
+  __attribute__ ((__unused__, section(".fini_array")))
+  = { __do_global_dtors_aux };
+#endif /* !defined(FINI_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
+static void __attribute__((used))
 frame_dummy (void)
 {
 #ifdef USE_EH_FRAME_REGISTRY
   static struct object object;
-#if defined(CRT_GET_RFIB_TEXT) || defined(CRT_GET_RFIB_DATA)
+#ifdef CRT_GET_RFIB_DATA
   void *tbase, *dbase;
-#ifdef CRT_GET_RFIB_TEXT
-  CRT_GET_RFIB_TEXT (tbase);
-#else
   tbase = 0;
-#endif
-#ifdef CRT_GET_RFIB_DATA
   CRT_GET_RFIB_DATA (dbase);
-#else
-  dbase = 0;
-#endif
   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
-#endif /* EH_FRAME_SECTION_NAME */
+#endif /* CRT_GET_RFIB_DATA */
+#endif /* USE_EH_FRAME_REGISTRY */
 #ifdef JCR_SECTION_NAME
-  if (__JCR_LIST__[0] && _Jv_RegisterClasses)
-    _Jv_RegisterClasses (__JCR_LIST__);
+  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 (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);
-}
-#endif /* EH_FRAME_SECTION_NAME || JCR_SECTION_NAME */
+#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 */
 
@@ -358,27 +377,15 @@ __do_global_ctors (void)
 
 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.  */
 
-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);
@@ -388,6 +395,8 @@ __do_global_ctors_aux (void)	/* prologue goes in .init section */
 
 #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.  */
@@ -419,11 +428,16 @@ __do_global_ctors_1(void)
     __register_frame_info (__EH_FRAME_BEGIN__, &object);
 #endif
 #ifdef JCR_SECTION_NAME
-  if (__JCR_LIST__[0] && _Jv_RegisterClasses)
-    _Jv_RegisterClasses (__JCR_LIST__);
+  if (__JCR_LIST__[0])
+    {
+      void (*register_classes) (void *) = _Jv_RegisterClasses;
+      __asm ("" : "+r" (register_classes));
+      if (register_classes)
+	register_classes (__JCR_LIST__);
+    }
 #endif
 }
-#endif /* EH_FRAME_SECTION_NAME || JCR_SECTION_NAME */
+#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?"
@@ -469,9 +483,18 @@ STATIC func_ptr __DTOR_END__[1]
 #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.  */
-STATIC int __FRAME_END__[]
-     __attribute__ ((unused, mode(SI), section(EH_FRAME_SECTION_NAME),
-		     aligned(4)))
+# 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 */
 
@@ -483,11 +506,14 @@ STATIC void *__JCR_END__[1]
    = { 0 };
 #endif /* JCR_SECTION_NAME */
 
-#ifdef INIT_SECTION_ASM_OP
+#ifdef INIT_ARRAY_SECTION_ASM_OP
 
-#ifdef OBJECT_FORMAT_ELF
+/* If we are using .init_array, there is nothing to do.  */
 
-static void
+#elif defined(INIT_SECTION_ASM_OP)
+
+#ifdef OBJECT_FORMAT_ELF
+static void __attribute__((used))
 __do_global_ctors_aux (void)
 {
   func_ptr *p;
@@ -496,21 +522,7 @@ __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
@@ -542,20 +554,18 @@ __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 */
 
 #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.  */
-extern void __do_global_ctors_1(void);
 void
 __do_global_ctors (void)
 {
@@ -574,67 +584,3 @@ __do_global_ctors (void)
 #else /* ! CRT_BEGIN && ! CRT_END */
 #error "One of CRT_BEGIN or CRT_END must be defined."
 #endif
-
-#else  /* OBJECT_FORMAT_MACHO */
-
-/* For Mach-O format executables, we assume that the system's runtime is
-   smart enough to handle constructors and destructors, but doesn't have
-   an init section (if it can't even handle constructors/destructors
-   you should be using INVOKE__main, not crtstuff). All we need to do
-   is install/deinstall the frame information for exceptions. We do this
-   by putting a constructor in crtbegin.o and a destructor in crtend.o.
-
-   crtend.o also puts in the terminating zero in the frame information
-   segment.  */
-
-/* The crtstuff for other object formats use the symbol __EH_FRAME_BEGIN__
-   to figure out the start of the exception frame, but here we use
-   getsectbynamefromheader to find this value. Either method would work,
-   but this method avoids creating any global symbols, which seems
-   cleaner.  */
-
-#include <mach-o/ldsyms.h>
-extern const struct section *
-  getsectbynamefromheader (const struct mach_header *,
-			   const char *, const char *);
-
-#ifdef CRT_BEGIN
-
-static void __reg_frame_ctor (void) __attribute__ ((constructor));
-
-static void
-__reg_frame_ctor (void)
-{
-  static struct object object;
-  const struct section *eh_frame;
-
-  eh_frame = getsectbynamefromheader (&_mh_execute_header,
-				      "__TEXT", "__eh_frame");
-  __register_frame_info ((void *) eh_frame->addr, &object);
-}
-
-#elif defined(CRT_END)
-
-static void __dereg_frame_dtor (void) __attribute__ ((destructor));
-
-static void
-__dereg_frame_dtor (void)
-{
-  const struct section *eh_frame;
-
-  eh_frame = getsectbynamefromheader (&_mh_execute_header,
-				      "__TEXT", "__eh_frame");
-  __deregister_frame_info ((void *) eh_frame->addr);
-}
-
-/* Terminate the frame section with a final zero.  */
-STATIC int __FRAME_END__[]
-     __attribute__ ((unused, mode(SI), section(EH_FRAME_SECTION_NAME),
-		     aligned(4)))
-     = { 0 };
-
-#else /* ! CRT_BEGIN && ! CRT_END */
-#error "One of CRT_BEGIN or CRT_END must be defined."
-#endif
-
-#endif /* OBJECT_FORMAT_MACHO */