Update. cvs/libc-ud-970926

1997-09-27 01:14  Ulrich Drepper  <drepper@cygnus.com>

	* Makeconfig (extra-objs): Depend in before-compile.

	* configure.in: Locate Perl and substitute with complete path.
	* config.make.in: Add PERL for substitution.
	* elf/Makefile (routines): Add dl-addr.
	* elf/dladdr.c: Move the real code into ...
	* elf/dl-addr.c: New file.
	* elf/link.h: Add prototype for _dl_addr.

	* elf/dladdr.c (dladdr): Change address argument to be const.
	* elf/dlfcn.h: Likewise.

	* locale/C_name.c: Add _nl_POSIX_name.
	* locale/localeinfo.h: Add declaration of _nl_POSIX_name.
	* locale/findlocale.c (_nl_find_locale): Use _nl_POSIX_name.
	(_nl_remove_locale): Free name of data set.
	* locale/setlocale.c (clever_copy): Remove.
	(new_composite_name): Use _nl_C_name and _nl_POSIX_name in compare.
	(setname): Only remove old name when it is for category LC_ALL.

	Change malloc, free, realloc, and memalign hooks for glibc to take
	another parameter indicating the location of the caller.
	* malloc/malloc.c: Change hook functions and variables.
	* malloc/malloc.h: Likewise.
	* malloc/mcheck.c: Likewise.  Make sure later hooked function also
	get the original caller address.
	* malloc/mtrace.c: Likewise.
	(tr_where): If no information in _mtrace_file is given use the
	information about the caller.
	* malloc/Makefile (distribute): Replace mtrace.awk by mtrace.pl.
	Add rules to install mtrace.pl after rewriting.
	* malloc/mtrace.pl: New file.  Based on the old AWK script but
	with extended functionality.
	* malloc/mtrace.awk: Removed.

	* po/fr.po: New version.

	* string/Makefile: Do use builtins for tester.c and inl-tester.c.
	* string/tester.c: Rewrite.  Split in many small functions to not
	exceed gcc's limits.

	* sysdeps/unix/sysv/linux/syscalls.list: Add prctl.

1997-09-25  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* string/bits/string2.h (__stpcpy_small): Don't use casts as
	lvalues.

1997-09-26  Andreas Jaeger  <aj@arthur.rhein-neckar.de>

	* manual/time.texi (Formatting Date and Time): Clarify
	explanation of strftime flags a bit.
	Suggested by Robert Bihlmeyer <robbe@orcus.priv.at>.

1997-09-25 00:13  David S. Miller  <davem@tanya.rutgers.edu>

	* sysdeps/libm-ieee754/s_exp2f.c: Protect _GNU_SOURCE definition.
	Fix typo, it is FLT_MANT_DIG.

1997-09-24 18:52  H.J. Lu  <hjl@gnu.ai.mit.edu>

	* math/atest-exp2.c: Include <stdlib/gmp.h> instead of <gmp.h>.

1997-08-27 08:10  H.J. Lu  <hjl@gnu.ai.mit.edu>

	* libio/libio.h, libio/libioP.h: Support libio in libstdc++.

	* libio/libio.h (_IO_peekc): Defined as _IO_peekc_unlocked if
	_IO_MTSAFE_IO is undefined.

1997-09-24 23:27  Richard Henderson  <rth@cygnus.com>

	* elf/dl-runtime.c (fixup): Don't go through elf_machine_relplt, but
	lookup the value of the target symbol ourselves and call the new
	elf_machine_fixup_plt.  This kills the ELF_FIXUP_RETURN_VALUE hack.
	(profile_fixup): Likewise, but don't fix up the plt.
	* elf/rtld.c (_dl_main): ELF_MACHINE_RELOC_NOPLT renamed _JMP_SLOT.
	* sysdeps/alpha/dl-machine.h (ELF_MACHINE_RELOC_NOPLT): Renamed.
	(elf_alpha_fix_plt): Renamed elf_machine_fixup_plt.
	* sysdeps/i386/dl-machine.h (elf_machine_relplt): Killed.
	(ELF_MACHINE_JMP_SLOT): Renamed.
	(elf_machine_fixup_plt): New function.
	* sysdeps/m68k/dl-machine.h: Likewise.
	* sysdeps/powerpc/dl-machine.h: Likewise.
	(elf_machine_rela): Moved JMP_SLOT fixup out to elf_machine_fixup_plt.
	* sysdeps/sparc/sparc32/dl-machine.h: Likewise.
	* sysdeps/sparc/sparc64/dl-machine.h: Likewise.
	* sysdeps/stub/dl-machine.h: Update, sorta.

	* sysdeps/alpha/dl-machine.h (elf_machine_runtime_setup): Do profiling.
	(TRAMPOLINE_TEMPLATE): From the carcas of _RUNTIME_TRAMPOLINE, do
	both normal and profile code.
	(elf_machine_rela): Handle r_addend for .got and .plt too.

2 files changed, 46 insertions, 42 deletions

diff --git a/sysdeps/sparc/sparc32/dl-machine.h b/sysdeps/sparc/sparc32/dl-machine.h
index b80c126487..288a140245 100644
--- a/sysdeps/sparc/sparc32/dl-machine.h
+++ b/sysdeps/sparc/sparc32/dl-machine.h
@@ -126,13 +126,6 @@ _dl_runtime_resolve:
 	 restore
 	.size _dl_runtime_resolve, . - _dl_runtime_resolve");
 
-/* The address of the JMP_SLOT reloc is the .plt entry, thus we don't
-   dereference the reloc's addr to get the final destination.  Ideally
-   there would be a generic way to return the value of the symbol from
-   elf_machine_relplt, but as it is, the address of the .plt entry is
-   good enough.  */
-#define ELF_FIXUP_RETURN_VALUE(map, result)  ((Elf32_Addr) &(result))
-
 /* Nonzero iff TYPE should not be allowed to resolve to one of
    the main executable's symbols, as for a COPY reloc.  */
 #define elf_machine_lookup_noexec_p(type) ((type) == R_SPARC_COPY)
@@ -142,7 +135,7 @@ _dl_runtime_resolve:
 #define elf_machine_lookup_noplt_p(type) ((type) == R_SPARC_JMP_SLOT)
 
 /* A reloc type used for ld.so cmdline arg lookups to reject PLT entries.  */
-#define ELF_MACHINE_RELOC_NOPLT	R_SPARC_JMP_SLOT
+#define ELF_MACHINE_JMP_SLOT	R_SPARC_JMP_SLOT
 
 /* The SPARC never uses Elf32_Rel relocations.  */
 #define ELF_MACHINE_NO_REL 1
@@ -150,9 +143,6 @@ _dl_runtime_resolve:
 /* The SPARC overlaps DT_RELA and DT_PLTREL.  */
 #define ELF_MACHINE_PLTREL_OVERLAP 1
 
-/* The PLT uses Elf32_Rela relocs.  */
-#define elf_machine_relplt elf_machine_rela
-
 /* Initial entry point code for the dynamic linker.
    The C function `_dl_start' is the real entry point;
    its return value is the user program's entry point.  */
@@ -246,7 +236,30 @@ _dl_start_user:
 	.size   _dl_start_user,.-_dl_start_user
 .previous");
 
+static inline void
+elf_machine_fixup_plt (struct link_map *map, const Elf32_Rela *reloc,
+		       Elf32_Addr *reloc_addr, Elf32_Addr value)
+{
+  /* For thread safety, write the instructions from the bottom and
+     flush before we overwrite the critical "b,a".  This of course
+     need not be done during bootstrapping, since there are no threads.
+     But we also can't tell if we _can_ use flush, so don't. */
+
+  reloc_addr[2] = OPCODE_JMP_G1 | (value & 0x3ff);
+#ifndef RTLD_BOOTSTRAP
+  if (_dl_hwcap & HWCAP_SPARC_FLUSH)
+    __asm __volatile ("flush %0+8" : : "r"(reloc_addr));
+#endif
+
+  reloc_addr[1] = OPCODE_SETHI_G1 | (value >> 10);
+#ifndef RTLD_BOOTSTRAP
+  if (_dl_hwcap & HWCAP_SPARC_FLUSH)
+    __asm __volatile ("flush %0+4" : : "r"(reloc_addr));
+#endif
+}
+
 #ifdef RESOLVE
+
 /* Perform the relocation specified by RELOC and SYM (which is fully resolved).
    MAP is the object containing the reloc.  */
 
@@ -305,14 +318,7 @@ elf_machine_rela (struct link_map *map, const Elf32_Rela *reloc,
 	  *reloc_addr = value;
 	  break;
 	case R_SPARC_JMP_SLOT:
-	  /* For thread safety, write the instructions from the bottom and
-	     flush before we overwrite the critical "b,a".  */
-	  reloc_addr[2] = OPCODE_JMP_G1 | (value & 0x3ff);
-	  if (_dl_hwcap & HWCAP_SPARC_FLUSH)
-	    __asm __volatile ("flush %0+8" : : "r"(reloc_addr));
-	  reloc_addr[1] = OPCODE_SETHI_G1 | (value >> 10);
-	  if (_dl_hwcap & HWCAP_SPARC_FLUSH)
-	    __asm __volatile ("flush %0+4" : : "r"(reloc_addr));
+	  elf_machine_fixup_plt(map, reloc, reloc_addr, value);
 	  break;
 	case R_SPARC_8:
 	  *(char *) reloc_addr = value;
diff --git a/sysdeps/sparc/sparc64/dl-machine.h b/sysdeps/sparc/sparc64/dl-machine.h
index e302f4a1fe..226623152d 100644
--- a/sysdeps/sparc/sparc64/dl-machine.h
+++ b/sysdeps/sparc/sparc64/dl-machine.h
@@ -67,7 +67,26 @@ elf_machine_load_address (void)
   return pc - *(Elf64_Addr *)(elf_pic_register + la);
 }
 
+static inline void
+elf_machine_fixup_plt(struct link_map *map, const Elf64_Rela *reloc,
+                      Elf64_Addr *reloc_addr, Elf64_Addr value)
+{
+  Elf64_Dyn *pltfmt = map->l_info[DT_SPARC(PLTFMT)];
+  switch (pltfmt ? pltfmt->d_un.d_val : 0)
+    {
+    case 1: /* .got.plt with absolute addresses */
+      *reloc_addr = value;
+      break;
+    case 2: /* .got.plt with got-relative addresses */
+      *reloc_addr = value - (map->l_info[DT_PLTGOT]->d_un.d_ptr + map->l_addr);
+      break;
+    default:
+      assert (! "unexpected .plt format type");
+    }
+}
+
 #ifdef RESOLVE
+
 /* Perform the relocation specified by RELOC and SYM (which is fully resolved).
    MAP is the object containing the reloc.  */
 
@@ -160,21 +179,7 @@ elf_machine_rela (struct link_map *map, const Elf64_Rela *reloc,
 	  break;
 
 	case R_SPARC_JMP_SLOT:
-	  {
-	    Elf64_Dyn *pltfmt = map->l_info[DT_SPARC(PLTFMT)];
-	    switch (pltfmt ? pltfmt->d_un.d_val : 0)
-	      {
-	      case 1: /* .got.plt with absolute addresses */
-		*reloc_addr = value;
-	        break;
-	      case 2: /* .got.plt with got-relative addresses */
-		*reloc_addr = value - (map->l_info[DT_PLTGOT]->d_un.d_ptr
-				       + map->l_addr);
-		break;
-	      default:
-		assert (! "unexpected .plt format type");
-	      }
-	  }
+	  elf_machine_fixup_plt(map, reloc, reloc_addr, value);
 	  break;
 
 	case R_SPARC_NONE:		/* Alright, Wilbur.  */
@@ -212,7 +217,7 @@ elf_machine_lazy_rel (struct link_map *map, const Elf64_Rela *reloc)
 #define elf_machine_lookup_noplt_p(type) ((type) == R_SPARC_JMP_SLOT)
 
 /* A reloc type used for ld.so cmdline arg lookups to reject PLT entries.  */
-#define ELF_MACHINE_RELOC_NOPLT	R_SPARC_JMP_SLOT
+#define ELF_MACHINE_JMP_SLOT	R_SPARC_JMP_SLOT
 
 /* The SPARC never uses Elf64_Rel relocations.  */
 #define ELF_MACHINE_NO_REL 1
@@ -220,13 +225,6 @@ elf_machine_lazy_rel (struct link_map *map, const Elf64_Rela *reloc)
 /* The SPARC overlaps DT_RELA and DT_PLTREL.  */
 #define ELF_MACHINE_PLTREL_OVERLAP 1
 
-/* The return value from dl-runtime's fixup, if it should be special.  */
-#define ELF_FIXUP_RETURN_VALUE(map, result)				\
-  ((map)->l_info[DT_SPARC(PLTFMT)]					\
-   && (map)->l_info[DT_SPARC(PLTFMT)]->d_un.d_val == 2			\
-   ? (result) + (map)->l_info[DT_PLTGOT]->d_un.d_ptr + (map)->l_addr	\
-   : (result))
-
 /* Set up the loaded object described by L so its unrelocated PLT
    entries will jump to the on-demand fixup code in dl-runtime.c.  */