* configure.in (libc_cv_gcc_dwarf2_unwind_info): Delete.

(HAVE_DWARF2_UNWIND_INFO{,_STATIC}): Remove AC_DEFINEs.
	* configure: Regenerate.
	* config.h.in (HAVE_DWARF2_UNWIND_INFO{,_STATIC}): Remove undefs.
	* elf/soinit.c: Don't include gccframe.h.
	(__EH_FRAME_BEGIN__): Define unconditionally.
	(__register_frame_info, __deregister_frame_info)
	(__register_frame_info_bases, __deregister_frame_info_bases)
	(__register_frame, __deregister_frame): Remove declarations.
	(__libc_global_ctors, __libc_fini): Don't call registry functions.
	* elf/sofini.c (__EH_FRAME_END__): Define unconditionally.

ChangeLog

@@ -1,3 +1,17 @@
+2004-11-23  Richard Sandiford  <rsandifo@redhat.com>
+
+	* configure.in (libc_cv_gcc_dwarf2_unwind_info): Delete.
+	(HAVE_DWARF2_UNWIND_INFO{,_STATIC}): Remove AC_DEFINEs.
+	* configure: Regenerate.
+	* config.h.in (HAVE_DWARF2_UNWIND_INFO{,_STATIC}): Remove undefs.
+	* elf/soinit.c: Don't include gccframe.h.
+	(__EH_FRAME_BEGIN__): Define unconditionally.
+	(__register_frame_info, __deregister_frame_info)
+	(__register_frame_info_bases, __deregister_frame_info_bases)
+	(__register_frame, __deregister_frame): Remove declarations.
+	(__libc_global_ctors, __libc_fini): Don't call registry functions.
+	* elf/sofini.c (__EH_FRAME_END__): Define unconditionally.
+
 2006-01-18  Samuel Thibault  <samuel.thibault@ens-lyon.org>
 
 	[BZ #2178]

config.h.in

@@ -89,13 +89,6 @@
 /* Define if static NSS modules are wanted.  */
 #undef	DO_STATIC_NSS
 
-/* Define if gcc uses DWARF2 unwind information for exception support.  */
-#undef	HAVE_DWARF2_UNWIND_INFO
-
-/* Define if gcc uses DWARF2 unwind information for exception support
-   with static variable. */
-#undef	HAVE_DWARF2_UNWIND_INFO_STATIC
-
 /* Define if the compiler supports __builtin_expect.  */
 #undef	HAVE_BUILTIN_EXPECT
 

configure

@@ -1962,33 +1962,6 @@ m680?0)		base_machine=m68k machine=m68k/$machine ;;
 m68k)		base_machine=m68k machine=m68k/m68020 ;;
 m88???)		base_machine=m88k machine=m88k/$machine ;;
 m88k)		base_machine=m88k machine=m88k/m88100 ;;
-mips64*)	base_machine=mips64
-		case "$CC $CFLAGS $CPPFLAGS " in
-		*" -mabi=n32 "*) mips_cc_abi=n32 ;;
-		*" -mabi=64 "*|*" -mabi=n64 "*) mips_cc_abi=64 ;;
-		*" -mabi=32 "*|*" -mabi=o32 "*) mips_cc_abi=32 ;;
-		*) mips_cc_abi=default ;;
-		esac
-		case $config_os in
-		*abin32*) mips_config_abi=n32 ;;
-		*abi64*|*abin64*) mips_config_abi=64 ;;
-		*abi32*|*abio32*) mips_config_abi=32 ;;
-		*) mips_config_abi=$mips_cc_abi ;;
-		esac
-		case $mips_config_abi in
-		default) machine=mips/mips64/n32 mips_config_abi=n32 ;;
-		n32) machine=mips/mips64/n32 ;;
-		64) machine=mips/mips64/n64 ;;
-		32) machine=mips/mips32/kern64 ;;
-		esac
-		machine=$machine/$config_machine
-		if test $mips_config_abi != $mips_cc_abi; then
-		  # This won't make it to config.make, but we want to
-		  # set this in case configure tests depend on it.
-		  CPPFLAGS="$CPPFLAGS -mabi=$mips_config_abi"
-		fi
-		;;
-mips*)		base_machine=mips machine=mips/mips32/$machine ;;
 powerpc)	base_machine=powerpc machine=powerpc/powerpc32 ;;
 powerpc64)	base_machine=powerpc machine=powerpc/powerpc64 ;;
 s390)           base_machine=s390 machine=s390/s390-32 ;;
@@ -6295,102 +6268,6 @@ _ACEOF
 fi
 fi
 
-echo "$as_me:$LINENO: checking for DWARF2 unwind info support" >&5
-echo $ECHO_N "checking for DWARF2 unwind info support... $ECHO_C" >&6
-if test "${libc_cv_gcc_dwarf2_unwind_info+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  cat > conftest.c <<EOF
-#line $LINENO "configure"
-static char *__EH_FRAME_BEGIN__;
-_start ()
-{
-#ifdef CHECK__register_frame
-  __register_frame (__EH_FRAME_BEGIN__);
-  __deregister_frame (__EH_FRAME_BEGIN__);
-#endif
-#ifdef CHECK__register_frame_info
-  __register_frame_info (__EH_FRAME_BEGIN__);
-  __deregister_frame_info (__EH_FRAME_BEGIN__);
-#endif
-}
-int __eh_pc;
-__throw () {}
-/* FIXME: this is fragile.  */
-malloc () {}
-strcmp () {}
-strlen () {}
-memcpy () {}
-memset () {}
-free () {}
-abort () {}
-__bzero () {}
-dl_iterate_phdr () {}
-EOF
-libc_unwind_check="${CC-cc} $CFLAGS $CPPFLAGS -DCHECK__register_frame_info \
-			    $LDFLAGS \
-			    -nostdlib -nostartfiles -o conftest conftest.c \
-			    -lgcc"
-# Some platforms' specs put -lgcc first.  The second one doesn't hurt.
-if { ac_try='$libc_unwind_check >&5'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } ||
-   { ac_try='$libc_unwind_check -lgcc_eh -lgcc >&5'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }
-then
-  if $libc_unwind_check -v 2>&1 >/dev/null \
-     | grep -- --eh-frame-hdr 2>&1 >/dev/null; then
-    libc_cv_gcc_dwarf2_unwind_info=no_registry_needed
-  else
-    libc_cv_gcc_dwarf2_unwind_info=static
-  fi
-else
-  libc_cv_gcc_dwarf2_unwind_info=no
-fi
-if test $libc_cv_gcc_dwarf2_unwind_info = no; then
-  if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS -DCHECK__register_frame
-			      $LDFLAGS -nostdlib -nostartfiles
-			      -o conftest conftest.c -lgcc >&5'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-    libc_cv_gcc_dwarf2_unwind_info=yes
-  else
-    libc_cv_gcc_dwarf2_unwind_info=no
-  fi
-fi
-rm -f conftest*
-fi
-echo "$as_me:$LINENO: result: $libc_cv_gcc_dwarf2_unwind_info" >&5
-echo "${ECHO_T}$libc_cv_gcc_dwarf2_unwind_info" >&6
-case $libc_cv_gcc_dwarf2_unwind_info in
-yes)
-  cat >>confdefs.h <<\_ACEOF
-#define HAVE_DWARF2_UNWIND_INFO 1
-_ACEOF
-
-  ;;
-static)
-  cat >>confdefs.h <<\_ACEOF
-#define HAVE_DWARF2_UNWIND_INFO 1
-_ACEOF
-
-  cat >>confdefs.h <<\_ACEOF
-#define HAVE_DWARF2_UNWIND_INFO_STATIC 1
-_ACEOF
-
-  ;;
-esac
-
 echo "$as_me:$LINENO: checking for __builtin_expect" >&5
 echo $ECHO_N "checking for __builtin_expect... $ECHO_C" >&6
 if test "${libc_cv_gcc_builtin_expect+set}" = set; then

configure.in

@@ -1726,71 +1726,6 @@ if test "$libc_cv_c_asmcr0_bug" != 'no'; then
 fi
 fi
 
-AC_CACHE_CHECK(for DWARF2 unwind info support, libc_cv_gcc_dwarf2_unwind_info,
-[cat > conftest.c <<EOF
-#line $LINENO "configure"
-static char *__EH_FRAME_BEGIN__;
-_start ()
-{
-#ifdef CHECK__register_frame
-  __register_frame (__EH_FRAME_BEGIN__);
-  __deregister_frame (__EH_FRAME_BEGIN__);
-#endif
-#ifdef CHECK__register_frame_info
-  __register_frame_info (__EH_FRAME_BEGIN__);
-  __deregister_frame_info (__EH_FRAME_BEGIN__);
-#endif
-}
-int __eh_pc;
-__throw () {}
-/* FIXME: this is fragile.  */
-malloc () {}
-strcmp () {}
-strlen () {}
-memcpy () {}
-memset () {}
-free () {}
-abort () {}
-__bzero () {}
-dl_iterate_phdr () {}
-EOF
-libc_unwind_check="${CC-cc} $CFLAGS $CPPFLAGS -DCHECK__register_frame_info \
-			    $LDFLAGS \
-			    -nostdlib -nostartfiles -o conftest conftest.c \
-			    -lgcc"
-# Some platforms' specs put -lgcc first.  The second one doesn't hurt.
-if AC_TRY_COMMAND([$libc_unwind_check >&AS_MESSAGE_LOG_FD]) ||
-   AC_TRY_COMMAND([$libc_unwind_check -lgcc_eh -lgcc >&AS_MESSAGE_LOG_FD])
-then
-  if $libc_unwind_check -v 2>&1 >/dev/null \
-     | grep -- --eh-frame-hdr 2>&1 >/dev/null; then
-    libc_cv_gcc_dwarf2_unwind_info=no_registry_needed
-  else
-    libc_cv_gcc_dwarf2_unwind_info=static
-  fi
-else
-  libc_cv_gcc_dwarf2_unwind_info=no
-fi
-if test $libc_cv_gcc_dwarf2_unwind_info = no; then
-  if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS -DCHECK__register_frame
-			      $LDFLAGS -nostdlib -nostartfiles
-			      -o conftest conftest.c -lgcc >&AS_MESSAGE_LOG_FD]); then
-    libc_cv_gcc_dwarf2_unwind_info=yes
-  else
-    libc_cv_gcc_dwarf2_unwind_info=no
-  fi
-fi
-rm -f conftest*])
-case $libc_cv_gcc_dwarf2_unwind_info in
-yes)
-  AC_DEFINE(HAVE_DWARF2_UNWIND_INFO)
-  ;;
-static)
-  AC_DEFINE(HAVE_DWARF2_UNWIND_INFO)
-  AC_DEFINE(HAVE_DWARF2_UNWIND_INFO_STATIC)
-  ;;
-esac
-
 dnl Check whether compiler understands __builtin_expect.
 AC_CACHE_CHECK(for __builtin_expect, libc_cv_gcc_builtin_expect,
 [cat > conftest.c <<EOF

elf/sofini.c

@@ -8,7 +8,6 @@ static void (*const __DTOR_END__[1]) (void)
      __attribute__ ((used, section (".dtors")))
      = { 0 };
 
-#ifdef HAVE_DWARF2_UNWIND_INFO
 /* Terminate the frame unwind info section with a 4byte 0 as a sentinel;
    this would be the 'length' field in a real FDE.  */
 
@@ -16,4 +15,3 @@ typedef unsigned int ui32 __attribute__ ((mode (SI)));
 static ui32 __FRAME_END__[1]
      __attribute__ ((used, section (".eh_frame")))
      = { 0 };
-#endif

elf/soinit.c

@@ -6,10 +6,6 @@
 #include <libc-internal.h>
 #include <stdlib.h>
 
-#ifdef HAVE_DWARF2_UNWIND_INFO_STATIC
-# include <gccframe.h>
-#endif
-
 static void (*const __CTOR_LIST__[1]) (void)
      __attribute__ ((section (".ctors")))
      = { (void (*) (void)) -1 };
@@ -24,21 +20,9 @@ run_hooks (void (*const list[]) (void))
     (**list) ();
 }
 
-#ifdef HAVE_DWARF2_UNWIND_INFO
 static char __EH_FRAME_BEGIN__[]
      __attribute__ ((section (".eh_frame")))
      = { };
-# ifdef HAVE_DWARF2_UNWIND_INFO_STATIC
-extern void __register_frame_info (const void *, struct object *);
-extern void __register_frame_info_bases (const void *, struct object *,
-					 void *, void *);
-extern void __deregister_frame_info (const void *);
-extern void __deregister_frame_info_bases (const void *);
-# else
-extern void __register_frame (const void *);
-extern void __deregister_frame (const void *);
-# endif
-#endif
 
 /* This function will be called from _init in init-first.c.  */
 void
@@ -46,33 +30,6 @@ __libc_global_ctors (void)
 {
   /* Call constructor functions.  */
   run_hooks (__CTOR_LIST__);
-
-#ifdef HAVE_DWARF2_UNWIND_INFO
-# ifdef HAVE_DWARF2_UNWIND_INFO_STATIC
-  {
-    static struct object ob;
-#  if defined CRT_GET_RFIB_TEXT || defined CRT_GET_RFIB_DATA
-    void *tbase, *dbase;
-
-#   ifdef CRT_GET_RFIB_TEXT
-    CRT_GET_RFIB_TEXT (tbase);
-#   else
-    tbase = NULL;
-#   endif
-#   ifdef CRT_GET_RFIB_DATA
-    CRT_GET_RFIB_DATA (dbase);
-#   else
-    dbase = NULL;
-#   endif
-    __register_frame_info_bases (__EH_FRAME_BEGIN__, &ob, tbase, dbase);
-#  else
-    __register_frame_info (__EH_FRAME_BEGIN__, &ob);
-#  endif
-  }
-# else
-  __register_frame (__EH_FRAME_BEGIN__);
-# endif
-#endif
 }
 
 
@@ -83,17 +40,6 @@ __libc_fini (void)
 {
   /* Call destructor functions.  */
   run_hooks (__DTOR_LIST__);
-#ifdef HAVE_DWARF2_UNWIND_INFO
-# ifdef HAVE_DWARF2_UNWIND_INFO_STATIC
-#  if defined CRT_GET_RFIB_TEXT || defined CRT_GET_RFIB_DATA
-  __deregister_frame_info_bases (__EH_FRAME_BEGIN__);
-#  else
-  __deregister_frame_info (__EH_FRAME_BEGIN__);
-#  endif
-# else
-  __deregister_frame (__EH_FRAME_BEGIN__);
-# endif
-#endif
 }
 
 void (*_fini_ptr) (void) __attribute__ ((section (".fini_array")))