Update.

2003-04-22  Roland McGrath  <roland@redhat.com>

	* elf/elf.h (AT_SYSINFO_EHDR): New macro, replaces AT_SYSINFO_EH_FRAME.
	* sysdeps/generic/ldsodefs.h (struct rtld_global): Remove
	dl_sysinfo_eh_frame member, add dl_sysinfo_dso member instead.
	* elf/dl-support.c: Update defn.
	* sysdeps/generic/libc-start.c: Don't call __register_frame_info_bases.
	* sysdeps/generic/dl-sysdep.c (_dl_sysdep_start) [NEED_DL_SYSINFO]:
	Set GL(dl_sysinfo_dso) from AT_SYSINFO_EHDR.
	(_dl_show_auxv): Grok AT_SYSINFO_EHDR, not AT_SYSINFO_EH_FRAME.
	* elf/rtld.c (dl_main) [NEED_DL_SYSINFO]: If GL(dl_sysinfo_dso) is
	set, set up a link_map for the preloaded, prelinked object.

3 files changed, 30 insertions, 41 deletions

diff --git a/sysdeps/generic/dl-sysdep.c b/sysdeps/generic/dl-sysdep.c
index 33e74dd60b..a249791ec7 100644
--- a/sysdeps/generic/dl-sysdep.c
+++ b/sysdeps/generic/dl-sysdep.c
@@ -139,8 +139,8 @@ _dl_sysdep_start (void **start_argptr,
       case AT_SYSINFO:
 	GL(dl_sysinfo) = av->a_un.a_val;
 	break;
-      case AT_SYSINFO_EH_FRAME:
-	GL(dl_sysinfo_eh_frame) = av->a_un.a_val;
+      case AT_SYSINFO_EHDR:
+	GL(dl_sysinfo_dso) = av->a_un.a_ptr;
 	break;
 #endif
 #ifdef DL_PLATFORM_AUXV
@@ -227,32 +227,34 @@ _dl_show_auxv (void)
     {
       static const struct
       {
-	const char label[23];
+	const char label[20];
 	enum { dec, hex, str } form;
       } auxvars[] =
 	{
-	  [AT_EXECFD - 2] =		{ "AT_EXECFD:           ", dec },
-	  [AT_PHDR - 2] =		{ "AT_PHDR:             0x", hex },
-	  [AT_PHENT - 2] =		{ "AT_PHENT:            ", dec },
-	  [AT_PHNUM - 2] =		{ "AT_PHNUM:            ", dec },
-	  [AT_PAGESZ - 2] =		{ "AT_PAGESZ:           ", dec },
-	  [AT_BASE - 2] =		{ "AT_BASE:             0x", hex },
-	  [AT_FLAGS - 2] =		{ "AT_FLAGS:            0x", hex },
-	  [AT_ENTRY - 2] =		{ "AT_ENTRY:            0x", hex },
-	  [AT_NOTELF - 2] =		{ "AT_NOTELF:           ", hex },
-	  [AT_UID - 2] =		{ "AT_UID:              ", dec },
-	  [AT_EUID - 2] =		{ "AT_EUID:             ", dec },
-	  [AT_GID - 2] =		{ "AT_GID:              ", dec },
-	  [AT_EGID - 2] =		{ "AT_EGID:             ", dec },
-	  [AT_PLATFORM - 2] =		{ "AT_PLATFORM:         ", str },
-	  [AT_HWCAP - 2] =		{ "AT_HWCAP:            ", hex },
-	  [AT_CLKTCK - 2] =		{ "AT_CLKTCK:           ", dec },
-	  [AT_FPUCW - 2] =		{ "AT_FPUCW:            ", hex },
-	  [AT_DCACHEBSIZE - 2] =	{ "AT_DCACHEBSIZE:      0x", hex },
-	  [AT_ICACHEBSIZE - 2] =	{ "AT_ICACHEBSIZE:      0x", hex },
-	  [AT_UCACHEBSIZE - 2] =	{ "AT_UCACHEBSIZE:      0x", hex },
-	  [AT_SYSINFO - 2] =		{ "AT_SYSINFO:          0x", hex },
-	  [AT_SYSINFO_EH_FRAME - 2] =	{ "AT_SYSINFO_EH_FRAME: 0x", hex }
+	  [AT_EXECFD - 2] =		{ "AT_EXECFD:       ", dec },
+	  [AT_PHDR - 2] =		{ "AT_PHDR:         0x", hex },
+	  [AT_PHENT - 2] =		{ "AT_PHENT:        ", dec },
+	  [AT_PHNUM - 2] =		{ "AT_PHNUM:        ", dec },
+	  [AT_PAGESZ - 2] =		{ "AT_PAGESZ:       ", dec },
+	  [AT_BASE - 2] =		{ "AT_BASE:         0x", hex },
+	  [AT_FLAGS - 2] =		{ "AT_FLAGS:        0x", hex },
+	  [AT_ENTRY - 2] =		{ "AT_ENTRY:        0x", hex },
+	  [AT_NOTELF - 2] =		{ "AT_NOTELF:       ", hex },
+	  [AT_UID - 2] =		{ "AT_UID:          ", dec },
+	  [AT_EUID - 2] =		{ "AT_EUID:         ", dec },
+	  [AT_GID - 2] =		{ "AT_GID:          ", dec },
+	  [AT_EGID - 2] =		{ "AT_EGID:         ", dec },
+	  [AT_PLATFORM - 2] =		{ "AT_PLATFORM:     ", str },
+	  [AT_HWCAP - 2] =		{ "AT_HWCAP:        ", hex },
+	  [AT_CLKTCK - 2] =		{ "AT_CLKTCK:       ", dec },
+	  [AT_FPUCW - 2] =		{ "AT_FPUCW:        ", hex },
+	  [AT_DCACHEBSIZE - 2] =	{ "AT_DCACHEBSIZE:  0x", hex },
+	  [AT_ICACHEBSIZE - 2] =	{ "AT_ICACHEBSIZE:  0x", hex },
+	  [AT_UCACHEBSIZE - 2] =	{ "AT_UCACHEBSIZE:  0x", hex },
+#ifdef DL_NEED_SYSINFO
+	  [AT_SYSINFO - 2] =		{ "AT_SYSINFO:      0x", hex },
+	  [AT_SYSINFO_EHDR - 2] =	{ "AT_SYSINFO_EHDR: 0x", hex }
+#endif
 	};
       unsigned int idx = (unsigned int) (av->a_type - 2);
 
diff --git a/sysdeps/generic/ldsodefs.h b/sysdeps/generic/ldsodefs.h
index 12151ce69d..4b75f4672e 100644
--- a/sysdeps/generic/ldsodefs.h
+++ b/sysdeps/generic/ldsodefs.h
@@ -395,8 +395,9 @@ struct rtld_global
   /* Syscall handling improvements.  This is very specific to x86.  */
   EXTERN uintptr_t _dl_sysinfo;
 
-  /* Address of the unwind info for the vsyscall page.  */
-  EXTERN uintptr_t _dl_sysinfo_eh_frame;
+  /* The vsyscall page is a virtual DSO pre-mapped by the kernel.
+     This points to its ELF header.  */
+  EXTERN const ElfW(Ehdr) *_dl_sysinfo_dso;
 #endif
 
 #ifdef SHARED
diff --git a/sysdeps/generic/libc-start.c b/sysdeps/generic/libc-start.c
index 0acdd59815..b98f0a2aa0 100644
--- a/sysdeps/generic/libc-start.c
+++ b/sysdeps/generic/libc-start.c
@@ -28,13 +28,6 @@ extern void __libc_init_first (int argc, char **argv, char **envp);
 extern int __libc_multiple_libcs;
 extern void *__libc_stack_end;
 
-#ifdef NEED_DL_SYSINFO
-# include "unwind-dw2-fde.h"
-extern __typeof (__register_frame_info_bases)
-     INTUSE(__register_frame_info_bases);
-static struct object eh_obj;
-#endif
-
 #include <tls.h>
 #ifndef SHARED
 # include <dl-osinfo.h>
@@ -157,13 +150,6 @@ LIBC_START_MAIN (int (*main) (int, char **, char ** MAIN_AUXVEC_DECL),
     __libc_check_standard_fds ();
 #endif
 
-#ifdef NEED_DL_SYSINFO
-  /* Register the kernel's unwind table.  */
-  if (GL(dl_sysinfo_eh_frame) != 0)
-    INTUSE(__register_frame_info_bases) ((void *) GL(dl_sysinfo_eh_frame),
-					 &eh_obj, 0, 0);
-#endif
-
   /* Register the destructor of the dynamic linker if there is any.  */
   if (__builtin_expect (rtld_fini != NULL, 1))
     __cxa_atexit ((void (*) (void *)) rtld_fini, NULL, NULL);