Merge commit 'origin/master' into fedora/master

Conflicts:
	sysdeps/powerpc/powerpc64/____longjmp_chk.S
	sysdeps/unix/sysv/linux/powerpc/powerpc64/____longjmp_chk.S

6 files changed, 152 insertions, 70 deletions

diff --git a/sysdeps/generic/elf/backtracesyms.c b/sysdeps/generic/elf/backtracesyms.c
index b31be6ac5d..319b207605 100644
--- a/sysdeps/generic/elf/backtracesyms.c
+++ b/sysdeps/generic/elf/backtracesyms.c
@@ -1,5 +1,5 @@
 /* Return list with names for address in backtrace.
-   Copyright (C) 1998,1999,2000,2001,2003 Free Software Foundation, Inc.
+   Copyright (C) 1998,1999,2000,2001,2003,2009 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
 
@@ -48,15 +48,22 @@ __backtrace_symbols (array, size)
   /* Fill in the information we can get from `dladdr'.  */
   for (cnt = 0; cnt < size; ++cnt)
     {
-      status[cnt] = _dl_addr (array[cnt], &info[cnt], NULL, NULL);
+      struct link_map *map;
+      status[cnt] = _dl_addr (array[cnt], &info[cnt], &map, NULL);
       if (status[cnt] && info[cnt].dli_fname && info[cnt].dli_fname[0] != '\0')
-	/* We have some info, compute the length of the string which will be
-	   "<file-name>(<sym-name>) [+offset].  */
-	total += (strlen (info[cnt].dli_fname ?: "")
-		  + (info[cnt].dli_sname
-		     ? strlen (info[cnt].dli_sname) + 3 + WORD_WIDTH + 3
-		     : 1)
-		  + WORD_WIDTH + 5);
+	{
+	  /* We have some info, compute the length of the string which will be
+	     "<file-name>(<sym-name>+offset) [address].  */
+	  total += (strlen (info[cnt].dli_fname ?: "")
+		    + strlen (info[cnt].dli_sname ?: "")
+		    + 3 + WORD_WIDTH + 3 + WORD_WIDTH + 5);
+
+	  /* The load bias is more useful to the user than the load
+	     address.  The use of these addresses is to calculate an
+	     address in the ELF file, so its prelinked bias is not
+	     something we want to subtract out.  */
+	  info[cnt].dli_fbase = (void *) map->l_addr;
+	}
       else
 	total += 5 + WORD_WIDTH;
     }
@@ -71,25 +78,39 @@ __backtrace_symbols (array, size)
 	{
 	  result[cnt] = last;
 
-	  if (status[cnt] && info[cnt].dli_fname
-	      && info[cnt].dli_fname[0] != '\0')
+	  if (status[cnt]
+	      && info[cnt].dli_fname != NULL && info[cnt].dli_fname[0] != '\0')
 	    {
-	      char buf[20];
+	      if (info[cnt].dli_sname == NULL)
+		/* We found no symbol name to use, so describe it as
+		   relative to the file.  */
+		info[cnt].dli_saddr = info[cnt].dli_fbase;
 
-	      if (array[cnt] >= (void *) info[cnt].dli_saddr)
-		sprintf (buf, "+%#lx",
-			 (unsigned long)(array[cnt] - info[cnt].dli_saddr));
+	      if (info[cnt].dli_sname == NULL && info[cnt].dli_saddr == 0)
+		last += 1 + sprintf (last, "%s(%s) [%p]",
+				     info[cnt].dli_fname ?: "",
+				     info[cnt].dli_sname ?: "",
+				     array[cnt]);
 	      else
-		sprintf (buf, "-%#lx",
-			 (unsigned long)(info[cnt].dli_saddr - array[cnt]));
-
-	      last += 1 + sprintf (last, "%s%s%s%s%s[%p]",
-				   info[cnt].dli_fname ?: "",
-				   info[cnt].dli_sname ? "(" : "",
-				   info[cnt].dli_sname ?: "",
-				   info[cnt].dli_sname ? buf : "",
-				   info[cnt].dli_sname ? ") " : " ",
-				   array[cnt]);
+		{
+		  char sign;
+		  ptrdiff_t offset;
+		  if (array[cnt] >= (void *) info[cnt].dli_saddr)
+		    {
+		      sign = '+';
+		      offset = array[cnt] - info[cnt].dli_saddr;
+		    }
+		  else
+		    {
+		      sign = '-';
+		      offset = info[cnt].dli_saddr - array[cnt];
+		    }
+
+		  last += 1 + sprintf (last, "%s(%s%c%#tx) [%p]",
+				       info[cnt].dli_fname ?: "",
+				       info[cnt].dli_sname ?: "",
+				       sign, offset, array[cnt]);
+		}
 	    }
 	  else
 	    last += 1 + sprintf (last, "[%p]", array[cnt]);
diff --git a/sysdeps/generic/elf/backtracesymsfd.c b/sysdeps/generic/elf/backtracesymsfd.c
index 6754d145b0..f0ab71587f 100644
--- a/sysdeps/generic/elf/backtracesymsfd.c
+++ b/sysdeps/generic/elf/backtracesymsfd.c
@@ -1,5 +1,5 @@
 /* Write formatted list with names for addresses in backtrace to a file.
-   Copyright (C) 1998, 2000, 2003, 2005 Free Software Foundation, Inc.
+   Copyright (C) 1998,2000,2003,2005,2009 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
 
@@ -46,47 +46,63 @@ __backtrace_symbols_fd (array, size, fd)
     {
       char buf[WORD_WIDTH];
       Dl_info info;
+      struct link_map *map;
       size_t last = 0;
 
-      if (_dl_addr (array[cnt], &info, NULL, NULL)
-	  && info.dli_fname && info.dli_fname[0] != '\0')
+      if (_dl_addr (array[cnt], &info, &map, NULL)
+	  && info.dli_fname != NULL && info.dli_fname[0] != '\0')
 	{
 	  /* Name of the file.  */
 	  iov[0].iov_base = (void *) info.dli_fname;
 	  iov[0].iov_len = strlen (info.dli_fname);
 	  last = 1;
 
-	  /* Symbol name.  */
-	  if (info.dli_sname != NULL)
+	  if (info.dli_sname != NULL || map->l_addr != 0)
 	    {
 	      char buf2[WORD_WIDTH];
 	      size_t diff;
 
-	      iov[1].iov_base = (void *) "(";
-	      iov[1].iov_len = 1;
-	      iov[2].iov_base = (void *) info.dli_sname;
-	      iov[2].iov_len = strlen (info.dli_sname);
+	      iov[last].iov_base = (void *) "(";
+	      iov[last].iov_len = 1;
+	      ++last;
+
+	      if (info.dli_sname != NULL)
+		{
+		  /* We have a symbol name.  */
+		  iov[last].iov_base = (void *) info.dli_sname;
+		  iov[last].iov_len = strlen (info.dli_sname);
+		  ++last;
+		}
+	      else
+		/* We have no symbol, so describe it as relative to the file.
+		   The load bias is more useful to the user than the load
+		   address.  The use of these addresses is to calculate an
+		   address in the ELF file, so its prelinked bias is not
+		   something we want to subtract out.  */
+		info.dli_saddr = (void *) map->l_addr;
 
 	      if (array[cnt] >= (void *) info.dli_saddr)
 		{
-		  iov[3].iov_base = (void *) "+0x";
+		  iov[last].iov_base = (void *) "+0x";
 		  diff = array[cnt] - info.dli_saddr;
 		}
 	      else
 		{
-		  iov[3].iov_base = (void *) "-0x";
+		  iov[last].iov_base = (void *) "-0x";
 		  diff = info.dli_saddr - array[cnt];
 		}
-	      iov[3].iov_len = 3;
-
-	      iov[4].iov_base = _itoa_word ((unsigned long int) diff,
-					    &buf2[WORD_WIDTH], 16, 0);
-	      iov[4].iov_len = &buf2[WORD_WIDTH] - (char *) iov[4].iov_base;
-
-	      iov[5].iov_base = (void *) ")";
-	      iov[5].iov_len = 1;
-
-	      last = 6;
+	      iov[last].iov_len = 3;
+	      ++last;
+
+	      iov[last].iov_base = _itoa_word ((unsigned long int) diff,
+					       &buf2[WORD_WIDTH], 16, 0);
+	      iov[last].iov_len = (&buf2[WORD_WIDTH]
+				   - (char *) iov[last].iov_base);
+	      ++last;
+
+	      iov[last].iov_base = (void *) ")";
+	      iov[last].iov_len = 1;
+	      ++last;
 	    }
 	}
 
diff --git a/sysdeps/powerpc/powerpc32/__longjmp-common.S b/sysdeps/powerpc/powerpc32/__longjmp-common.S
index 7b1c017837..955161ef2b 100644
--- a/sysdeps/powerpc/powerpc32/__longjmp-common.S
+++ b/sysdeps/powerpc/powerpc32/__longjmp-common.S
@@ -33,6 +33,13 @@ ENTRY (BP_SYM (__longjmp))
 
 #if defined PTR_DEMANGLE || defined CHECK_SP
 	lwz r24,(JB_GPR1*4)(r3)
+# ifdef CHECK_SP
+#  ifdef PTR_DEMANGLE
+	PTR_DEMANGLE3 (r24, r24, r25)
+#  endif
+	CHECK_SP (r24)
+	mr r1,r24
+# endif
 #else
 	lwz r1,(JB_GPR1*4)(r3)
 #endif
@@ -45,17 +52,11 @@ ENTRY (BP_SYM (__longjmp))
 	lwz r19,((JB_GPRS+5)*4)(r3)
 	lwz r20,((JB_GPRS+6)*4)(r3)
 #ifdef PTR_DEMANGLE
-# ifdef CHECK_SP
-	PTR_DEMANGLE3 (r24, r24, r25)
-# else
+# ifndef CHECK_SP
 	PTR_DEMANGLE3 (r1, r24, r25)
 # endif
 	PTR_DEMANGLE2 (r0, r25)
 #endif
-#ifdef CHECK_SP
-	CHECK_SP (r24)
-	mr r1,r24
-#endif
 	mtlr r0
 	lwz r21,((JB_GPRS+7)*4)(r3)
 	lwz r22,((JB_GPRS+8)*4)(r3)
diff --git a/sysdeps/powerpc/powerpc32/fpu/__longjmp-common.S b/sysdeps/powerpc/powerpc32/fpu/__longjmp-common.S
index f105815b9c..04ed6da68b 100644
--- a/sysdeps/powerpc/powerpc32/fpu/__longjmp-common.S
+++ b/sysdeps/powerpc/powerpc32/fpu/__longjmp-common.S
@@ -116,6 +116,13 @@ L(no_vmx):
 #endif
 #if defined PTR_DEMANGLE || defined CHECK_SP
 	lwz r24,(JB_GPR1*4)(r3)
+# ifdef CHECK_SP
+#  ifdef PTR_DEMANGLE
+	PTR_DEMANGLE3 (r24, r24, r25)
+#  endif
+	CHECK_SP (r24)
+	mr r1,r24
+# endif
 #else
 	lwz r1,(JB_GPR1*4)(r3)
 #endif
@@ -135,17 +142,11 @@ L(no_vmx):
 	lwz r20,((JB_GPRS+6)*4)(r3)
 	lfd fp20,((JB_FPRS+6*2)*4)(r3)
 #ifdef PTR_DEMANGLE
-# ifdef CHECK_SP
-	PTR_DEMANGLE3 (r24, r24, r25)
-# else
+# ifndef CHECK_SP
 	PTR_DEMANGLE3 (r1, r24, r25)
 # endif
 	PTR_DEMANGLE2 (r0, r25)
 #endif
-#ifdef CHECK_SP
-	CHECK_SP (r24)
-	mr r1,r24
-#endif
 	mtlr r0
 	lwz r21,((JB_GPRS+7)*4)(r3)
 	lfd fp21,((JB_FPRS+7*2)*4)(r3)
diff --git a/sysdeps/powerpc/powerpc32/____longjmp_chk.S b/sysdeps/unix/sysv/linux/powerpc/powerpc32/____longjmp_chk.S
index 128899a532..4cb968505d 100644
--- a/sysdeps/powerpc/powerpc32/____longjmp_chk.S
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/____longjmp_chk.S
@@ -19,7 +19,8 @@
 #include <sysdep.h>
 #include <rtld-global-offsets.h>
 
-	.section .rodata.str1.1,"aMS",@progbits,1
+	.section .rodata.str1.4,"aMS",@progbits,1
+	.align 2
 .LC0:
 	.string "longjmp causes uninitialized stack frame"
 	.text
@@ -49,15 +50,35 @@
 #define CHECK_SP(reg) \
 	cmplw	reg, r1;				\
 	bge+	.Lok;					\
-	cfi_remember_state;				\
 	mflr	r0;					\
-	stwu	r1,-16(r1);				\
-	cfi_adjust_cfa_offset (16);			\
-	stw	r0,20(r1);				\
+	stwu	r1,-32(r1);				\
+	cfi_remember_state;				\
+	cfi_adjust_cfa_offset (32);			\
+	stw	r0,36(r1);				\
 	cfi_offset (lr, 4);				\
+	mr	r31,r3;					\
+	mr	r30,r4;					\
+	li	r3,0;					\
+	addi	r4,r1,8;				\
+	li	r0,__NR_sigaltstack;			\
+	sc;						\
+	/* Without working sigaltstack we cannot perform the test.  */ \
+	bso	.Lok2;					\
+	lwz	r0,12(r1);				\
+	andi.	r3,r0,1;				\
+	beq	.Lfail;					\
+	lwz	r0,16(r1);				\
+	lwz	r3,8(r1);				\
+	add	r3,r3,r0;				\
+	sub	r3,r3,reg;				\
+	cmplw	r3,r0;					\
+	bge+	.Lok2;					\
+.Lfail:							\
 	LOAD_ARG;					\
 	bl	HIDDEN_JUMPTARGET (__fortify_fail);	\
-	nop;						\
+.Lok2:							\
+	mr	r3,r31;					\
+	mr	r4,r30;					\
 	cfi_restore_state;				\
 .Lok:
 
diff --git a/sysdeps/powerpc/powerpc64/____longjmp_chk.S b/sysdeps/unix/sysv/linux/powerpc/powerpc64/____longjmp_chk.S
index f1b7d85e46..936ace5f69 100644
--- a/sysdeps/powerpc/powerpc64/____longjmp_chk.S
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/____longjmp_chk.S
@@ -19,7 +19,8 @@
 #include <sysdep.h>
 #include <rtld-global-offsets.h>
 
-	.section .rodata.str1.1,"aMS",@progbits,1
+	.section .rodata.str1.8,"aMS",@progbits,1
+	.align 3
 .LC0:
 	.string "longjmp causes uninitialized stack frame"
 	.section .toc,"aw"
@@ -32,15 +33,36 @@
 #define CHECK_SP(reg) \
 	cmpld	reg, r1;				\
 	bge+	.Lok;					\
-	cfi_remember_state;				\
 	mflr	r0;					\
 	std	r0,16(r1);				\
-	stdu	r1,-112(r1);				\
-	cfi_adjust_cfa_offset (112);			\
+	mr	r31,r3;					\
+	mr	r30,r4;					\
+	stdu	r1,-144(r1);				\
+	cfi_remember_state;				\
+	cfi_adjust_cfa_offset (144);			\
 	cfi_offset (lr, 16);				\
+	li	r3,0;					\
+	addi	r4,r1,112;				\
+	li	r0,__NR_sigaltstack;			\
+	sc;						\
+	/* Without working sigaltstack we cannot perform the test.  */ \
+	bso	.Lok2;					\
+	lwz	r0,112+8(r1);				\
+	andi.	r4,r0,1;				\
+	beq	.Lfail;					\
+	ld	r0,112+16(r1);				\
+	ld	r4,112(r1);				\
+	add	r4,r4,r0;				\
+	sub	r3,r3,reg;				\
+	cmpld	r3,r0;					\
+	bge+	.Lok2;					\
+.Lfail:							\
 	ld	r3,.LC1@toc(2);				\
 	bl	HIDDEN_JUMPTARGET (__fortify_fail);	\
 	nop;						\
+.Lok2:							\
+	mr	r3,r31;					\
+	mr	r4,r30;					\
 	cfi_restore_state;				\
 .Lok: