Merge ^/vendor/binutils/dist@214571 into contrib/binutils, which brings

us up to version 2.17.50.20070703, at the last GPLv2 commit.

Amongst others, this added upstream support for some FreeBSD-specific
things that we previously had to manually hack in, such as the OSABI
label support, and so on.

There are also quite a number of new files, some for cpu's (e.g. SPU)
that we may or may not be interested in, but those can be cleaned up
later on, if needed.

1 files changed, 122 insertions, 91 deletions

diff --git a/contrib/binutils/bfd/elf64-x86-64.c b/contrib/binutils/bfd/elf64-x86-64.c
index 9befd69..0ee75ce 100644
--- a/contrib/binutils/bfd/elf64-x86-64.c
+++ b/contrib/binutils/bfd/elf64-x86-64.c
@@ -1,5 +1,5 @@
 /* X86-64 specific support for 64-bit ELF
-   Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006
+   Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
    Free Software Foundation, Inc.
    Contributed by Jan Hubicka <jh@suse.cz>.
 
@@ -19,8 +19,8 @@
    along with this program; if not, write to the Free Software
    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */
 
-#include "bfd.h"
 #include "sysdep.h"
+#include "bfd.h"
 #include "bfdlink.h"
 #include "libbfd.h"
 #include "elf-bfd.h"
@@ -246,6 +246,23 @@ elf64_x86_64_reloc_type_lookup (bfd *abfd,
   return 0;
 }
 
+static reloc_howto_type *
+elf64_x86_64_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
+				const char *r_name)
+{
+  unsigned int i;
+
+  for (i = 0;
+       i < (sizeof (x86_64_elf_howto_table)
+	    / sizeof (x86_64_elf_howto_table[0]));
+       i++)
+    if (x86_64_elf_howto_table[i].name != NULL
+	&& strcasecmp (x86_64_elf_howto_table[i].name, r_name) == 0)
+      return &x86_64_elf_howto_table[i];
+
+  return NULL;
+}
+
 /* Given an x86_64 ELF reloc type, fill in an arelent structure.  */
 
 static void
@@ -350,7 +367,7 @@ static const bfd_byte elf64_x86_64_plt0_entry[PLT_ENTRY_SIZE] =
 {
   0xff, 0x35, 8, 0, 0, 0,	/* pushq GOT+8(%rip)  */
   0xff, 0x25, 16, 0, 0, 0,	/* jmpq *GOT+16(%rip) */
-  0x90, 0x90, 0x90, 0x90	/* pad out to 16 bytes with nops.  */
+  0x0f, 0x1f, 0x40, 0x00	/* nopl 0(%rax)       */
 };
 
 /* Subsequent entries in a procedure linkage table look like this.  */
@@ -676,11 +693,14 @@ elf64_x86_64_copy_indirect_symbol (struct bfd_link_info *info,
 static bfd_boolean
 elf64_x86_64_mkobject (bfd *abfd)
 {
-  bfd_size_type amt = sizeof (struct elf64_x86_64_obj_tdata);
-  abfd->tdata.any = bfd_zalloc (abfd, amt);
   if (abfd->tdata.any == NULL)
-    return FALSE;
-  return TRUE;
+    {
+      bfd_size_type amt = sizeof (struct elf64_x86_64_obj_tdata);
+      abfd->tdata.any = bfd_zalloc (abfd, amt);
+      if (abfd->tdata.any == NULL)
+	return FALSE;
+    }
+  return bfd_elf_mkobject (abfd);
 }
 
 static bfd_boolean
@@ -994,7 +1014,7 @@ elf64_x86_64_check_relocs (bfd *abfd, struct bfd_link_info *info, asection *sec,
 		    && (r_type != R_X86_64_PC32)
 		    && (r_type != R_X86_64_PC64))
 		   || (h != NULL
-		       && (! info->symbolic
+		       && (! SYMBOLIC_BIND (info, h)
 			   || h->root.type == bfd_link_hash_defweak
 			   || !h->def_regular))))
 	      || (ELIMINATE_COPY_RELOCS
@@ -1022,7 +1042,7 @@ elf64_x86_64_check_relocs (bfd *abfd, struct bfd_link_info *info, asection *sec,
 		  if (name == NULL)
 		    return FALSE;
 
-		  if (strncmp (name, ".rela", 5) != 0
+		  if (! CONST_STRNEQ (name, ".rela")
 		      || strcmp (bfd_get_section_name (abfd, sec),
 				 name + 5) != 0)
 		    {
@@ -1131,38 +1151,20 @@ elf64_x86_64_check_relocs (bfd *abfd, struct bfd_link_info *info, asection *sec,
 
 static asection *
 elf64_x86_64_gc_mark_hook (asection *sec,
-			   struct bfd_link_info *info ATTRIBUTE_UNUSED,
+			   struct bfd_link_info *info,
 			   Elf_Internal_Rela *rel,
 			   struct elf_link_hash_entry *h,
 			   Elf_Internal_Sym *sym)
 {
   if (h != NULL)
-    {
-      switch (ELF64_R_TYPE (rel->r_info))
-	{
-	case R_X86_64_GNU_VTINHERIT:
-	case R_X86_64_GNU_VTENTRY:
-	  break;
-
-	default:
-	  switch (h->root.type)
-	    {
-	    case bfd_link_hash_defined:
-	    case bfd_link_hash_defweak:
-	      return h->root.u.def.section;
-
-	    case bfd_link_hash_common:
-	      return h->root.u.c.p->section;
-
-	    default:
-	      break;
-	    }
-	}
-    }
-  else
-    return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
-
-  return NULL;
+    switch (ELF64_R_TYPE (rel->r_info))
+      {
+      case R_X86_64_GNU_VTINHERIT:
+      case R_X86_64_GNU_VTENTRY:
+	return NULL;
+      }
+
+  return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
 }
 
 /* Update the got entry reference counts for the section being removed.	 */
@@ -1285,7 +1287,6 @@ elf64_x86_64_adjust_dynamic_symbol (struct bfd_link_info *info,
 {
   struct elf64_x86_64_link_hash_table *htab;
   asection *s;
-  unsigned int power_of_two;
 
   /* If this is a function, put it in the procedure linkage table.  We
      will fill in the contents of the procedure linkage table later,
@@ -1403,32 +1404,9 @@ elf64_x86_64_adjust_dynamic_symbol (struct bfd_link_info *info,
       h->needs_copy = 1;
     }
 
-  /* We need to figure out the alignment required for this symbol.  I
-     have no idea how ELF linkers handle this.	16-bytes is the size
-     of the largest type that requires hard alignment -- long double.  */
-  /* FIXME: This is VERY ugly. Should be fixed for all architectures using
-     this construct.  */
-  power_of_two = bfd_log2 (h->size);
-  if (power_of_two > 4)
-    power_of_two = 4;
-
-  /* Apply the required alignment.  */
   s = htab->sdynbss;
-  s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
-  if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
-    {
-      if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
-	return FALSE;
-    }
-
-  /* Define the symbol as being at this point in the section.  */
-  h->root.u.def.section = s;
-  h->root.u.def.value = s->size;
-
-  /* Increment the section size to make room for the symbol.  */
-  s->size += h->size;
 
-  return TRUE;
+  return _bfd_elf_adjust_dynamic_copy (h, s);
 }
 
 /* Allocate space in .plt, .got and associated reloc sections for
@@ -1880,7 +1858,7 @@ elf64_x86_64_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
 	  /* Strip this section if we don't need it; see the
 	     comment below.  */
 	}
-      else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
+      else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
 	{
 	  if (s->size != 0 && s != htab->srelplt)
 	    relocs = TRUE;
@@ -2077,9 +2055,6 @@ elf64_x86_64_relocate_section (bfd *output_bfd, struct bfd_link_info *info,
   Elf_Internal_Rela *rel;
   Elf_Internal_Rela *relend;
 
-  if (info->relocatable)
-    return TRUE;
-
   htab = elf64_x86_64_hash_table (info);
   symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
   sym_hashes = elf_sym_hashes (input_bfd);
@@ -2135,6 +2110,21 @@ elf64_x86_64_relocate_section (bfd *output_bfd, struct bfd_link_info *info,
 				   h, sec, relocation,
 				   unresolved_reloc, warned);
 	}
+
+      if (sec != NULL && elf_discarded_section (sec))
+	{
+	  /* For relocs against symbols from removed linkonce sections,
+	     or sections discarded by a linker script, we just want the
+	     section contents zeroed.  Avoid any special processing.  */
+	  _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
+	  rel->r_info = 0;
+	  rel->r_addend = 0;
+	  continue;
+	}
+
+      if (info->relocatable)
+	continue;
+
       /* When generating a shared object, the relocations handled here are
 	 copied into the output file to be resolved at run time.  */
       switch (r_type)
@@ -2382,11 +2372,7 @@ elf64_x86_64_relocate_section (bfd *output_bfd, struct bfd_link_info *info,
 	  /* FIXME: The ABI says the linker should make sure the value is
 	     the same when it's zeroextended to 64 bit.	 */
 
-	  /* r_symndx will be zero only for relocs against symbols
-	     from removed linkonce sections, or sections discarded by
-	     a linker script.  */
-	  if (r_symndx == 0
-	      || (input_section->flags & SEC_ALLOC) == 0)
+	  if ((input_section->flags & SEC_ALLOC) == 0)
 	    break;
 
 	  if ((info->shared
@@ -2442,7 +2428,7 @@ elf64_x86_64_relocate_section (bfd *output_bfd, struct bfd_link_info *info,
 			   || r_type == R_X86_64_PC32
 			   || r_type == R_X86_64_PC64
 			   || !info->shared
-			   || !info->symbolic
+			   || !SYMBOLIC_BIND (info, h)
 			   || !h->def_regular))
 		{
 		  outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
@@ -2472,9 +2458,19 @@ elf64_x86_64_relocate_section (bfd *output_bfd, struct bfd_link_info *info,
 			{
 			  asection *osec;
 
+			  /* We are turning this relocation into one
+			     against a section symbol.  It would be
+			     proper to subtract the symbol's value,
+			     osec->vma, from the emitted reloc addend,
+			     but ld.so expects buggy relocs.  */
 			  osec = sec->output_section;
 			  sindx = elf_section_data (osec)->dynindx;
-			  BFD_ASSERT (sindx > 0);
+			  if (sindx == 0)
+			    {
+			      asection *oi = htab->elf.text_index_section;
+			      sindx = elf_section_data (oi)->dynindx;
+			    }
+			  BFD_ASSERT (sindx != 0);
 			}
 
 		      outrel.r_info = ELF64_R_INFO (sindx, r_type);
@@ -2614,8 +2610,9 @@ elf64_x86_64_relocate_section (bfd *output_bfd, struct bfd_link_info *info,
 		  val = bfd_get_8 (input_bfd, contents + roff + 1);
 		  BFD_ASSERT (val == 0x10);
 
-		  /* Now modify the instruction as appropriate.  */
-		  bfd_put_8 (output_bfd, 0x90, contents + roff);
+		  /* Now modify the instruction as appropriate.  Use
+		     xchg %ax,%ax instead of 2 nops.  */
+		  bfd_put_8 (output_bfd, 0x66, contents + roff);
 		  bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
 		  continue;
 		}
@@ -2907,8 +2904,9 @@ elf64_x86_64_relocate_section (bfd *output_bfd, struct bfd_link_info *info,
 	      val = bfd_get_8 (input_bfd, contents + roff + 1);
 	      BFD_ASSERT (val == 0x10);
 
-	      /* Now modify the instruction as appropriate.  */
-	      bfd_put_8 (output_bfd, 0x90, contents + roff);
+	      /* Now modify the instruction as appropriate.  Use
+		 xchg %ax,%ax instead of 2 nops.  */
+	      bfd_put_8 (output_bfd, 0x66, contents + roff);
 	      bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
 
 	      continue;
@@ -3030,12 +3028,6 @@ elf64_x86_64_relocate_section (bfd *output_bfd, struct bfd_link_info *info,
 
 	  if (r == bfd_reloc_overflow)
 	    {
-	      if (h != NULL
-		  && h->root.type == bfd_link_hash_undefweak
-		  && howto->pc_relative)
-		/* Ignore reloc overflow on branches to undefweak syms.  */
-		continue;
-
 	      if (! ((*info->callbacks->reloc_overflow)
 		     (info, (h ? &h->root : NULL), name, howto->name,
 		      (bfd_vma) 0, input_bfd, input_section,
@@ -3594,7 +3586,8 @@ elf64_x86_64_merge_symbol (struct bfd_link_info *info ATTRIBUTE_UNUSED,
 }
 
 static int
-elf64_x86_64_additional_program_headers (bfd *abfd)
+elf64_x86_64_additional_program_headers (bfd *abfd,
+					 struct bfd_link_info *info ATTRIBUTE_UNUSED)
 {
   asection *s;
   int count = 0; 
@@ -3614,23 +3607,38 @@ elf64_x86_64_additional_program_headers (bfd *abfd)
   return count;
 }
 
+/* Return TRUE if symbol should be hashed in the `.gnu.hash' section.  */
+
+static bfd_boolean
+elf64_x86_64_hash_symbol (struct elf_link_hash_entry *h)
+{
+  if (h->plt.offset != (bfd_vma) -1
+      && !h->def_regular
+      && !h->pointer_equality_needed)
+    return FALSE;
+
+  return _bfd_elf_hash_symbol (h);
+}
+
 static const struct bfd_elf_special_section 
   elf64_x86_64_special_sections[]=
 {
-  { ".gnu.linkonce.lb",	16, -2, SHT_NOBITS,   SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE},
-  { ".gnu.linkonce.lr",	16, -2, SHT_PROGBITS, SHF_ALLOC + SHF_X86_64_LARGE},
-  { ".gnu.linkonce.lt",	16, -2, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR + SHF_X86_64_LARGE},
-  { ".lbss",	5, -2, SHT_NOBITS,   SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE},
-  { ".ldata",	6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE},
-  { ".lrodata",	8, -2, SHT_PROGBITS, SHF_ALLOC + SHF_X86_64_LARGE},
-  { NULL,	0,  0, 0,            0 }
+  { STRING_COMMA_LEN (".gnu.linkonce.lb"), -2, SHT_NOBITS,   SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE},
+  { STRING_COMMA_LEN (".gnu.linkonce.lr"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_X86_64_LARGE},
+  { STRING_COMMA_LEN (".gnu.linkonce.lt"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR + SHF_X86_64_LARGE},
+  { STRING_COMMA_LEN (".lbss"),	           -2, SHT_NOBITS,   SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE},
+  { STRING_COMMA_LEN (".ldata"),	   -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE},
+  { STRING_COMMA_LEN (".lrodata"),	   -2, SHT_PROGBITS, SHF_ALLOC + SHF_X86_64_LARGE},
+  { NULL,	                0,          0, 0,            0 }
 };
 
 #define TARGET_LITTLE_SYM		    bfd_elf64_x86_64_vec
 #define TARGET_LITTLE_NAME		    "elf64-x86-64"
 #define ELF_ARCH			    bfd_arch_i386
 #define ELF_MACHINE_CODE		    EM_X86_64
-#define ELF_MAXPAGESIZE			    0x100000
+#define ELF_MAXPAGESIZE			    0x200000
+#define ELF_MINPAGESIZE			    0x1000
+#define ELF_COMMONPAGESIZE		    0x1000
 
 #define elf_backend_can_gc_sections	    1
 #define elf_backend_can_refcount	    1
@@ -3645,6 +3653,8 @@ static const struct bfd_elf_special_section
 #define bfd_elf64_bfd_link_hash_table_create \
   elf64_x86_64_link_hash_table_create
 #define bfd_elf64_bfd_reloc_type_lookup	    elf64_x86_64_reloc_type_lookup
+#define bfd_elf64_bfd_reloc_name_lookup \
+  elf64_x86_64_reloc_name_lookup
 
 #define elf_backend_adjust_dynamic_symbol   elf64_x86_64_adjust_dynamic_symbol
 #define elf_backend_check_relocs	    elf64_x86_64_check_relocs
@@ -3660,6 +3670,7 @@ static const struct bfd_elf_special_section
 #define elf_backend_relocate_section	    elf64_x86_64_relocate_section
 #define elf_backend_size_dynamic_sections   elf64_x86_64_size_dynamic_sections
 #define elf_backend_always_size_sections    elf64_x86_64_always_size_sections
+#define elf_backend_init_index_section	    _bfd_elf_init_1_index_section
 #define elf_backend_plt_sym_val		    elf64_x86_64_plt_sym_val
 #define elf_backend_object_p		    elf64_x86_64_elf_object_p
 #define bfd_elf64_mkobject		    elf64_x86_64_mkobject
@@ -3685,5 +3696,25 @@ static const struct bfd_elf_special_section
   elf64_x86_64_special_sections
 #define elf_backend_additional_program_headers \
   elf64_x86_64_additional_program_headers
+#define elf_backend_hash_symbol \
+  elf64_x86_64_hash_symbol
+
+#include "elf64-target.h"
+
+/* FreeBSD support.  */
+
+#undef  TARGET_LITTLE_SYM
+#define TARGET_LITTLE_SYM		    bfd_elf64_x86_64_freebsd_vec
+#undef  TARGET_LITTLE_NAME
+#define TARGET_LITTLE_NAME		    "elf64-x86-64-freebsd"
+
+#undef	ELF_OSABI
+#define	ELF_OSABI			    ELFOSABI_FREEBSD
+
+#undef  elf_backend_post_process_headers
+#define elf_backend_post_process_headers  _bfd_elf_set_osabi
+
+#undef  elf64_bed
+#define elf64_bed elf64_x86_64_fbsd_bed
 
 #include "elf64-target.h"