Remove STT_IFUNC support.

10 files changed, 45 insertions, 202 deletions

diff --git a/bfd/ChangeLog b/bfd/ChangeLog
index 6cd350f..02ae371 100644
--- a/bfd/ChangeLog
+++ b/bfd/ChangeLog
@@ -1,3 +1,31 @@
+2008-12-23  Nick Clifton  <nickc@redhat.com>
+
+	* elf-bfd.h (struct bfd_elf_section_data): Remove indirect_relocs
+	field.
+	(_bfd_elf_make_ifunc_reloc_section): Remove prototype.
+	* elf.c (swap_out_syms): Remove STT_IFUNC support.
+	(elf_find_function): Likewise.
+	* elf32-arm.c (arm_elf_find_function): Likewise.
+	(elf32_arm_adjust_dynamic_symbol): Likewise.
+	(elf32_arm_swap_symbol_in): Likewise.
+	(elf32_arm_is_function_type): Likewise.
+	* elf32-i386.c (is_indirect_symbol): Delete.
+	(elf_i386_check_relocs): Remove STT_IFUNC support.
+	(allocate_dynrelocs): Likewise.
+	(elf_i386_relocate_section): Likewise.
+	* elf64-x86-64.c (is_indirect_symbol): Delete.
+	(elf64_x86_64_check_relocs): Remove STT_IFUNC support.
+	(allocate_dynrelocs): Likewise.
+	(elf64_x86_64_relocate_section): Likewise.
+	* elfcode.h (elf_slurp_symbol_table): Likewise.
+	* elflink.c (_bfd_elf_adjust_symbol): Likewise.
+	(get_ifunc_reloc_section_name): Delete.
+	(_bfd_elf_make_ifunc_reloc_section): Delete.
+	* syms.c (BSF_INDIRECT_FUNCTION): Delete.
+	(bfd_print_symbol_vandf): Remove STT_IFUNC support.
+	(bfd_decode_symclass): Likewise.
+	* bfd-in2.h: Regenerate.
+
 2008-12-20  Hans-Peter Nilsson  <hp@axis.com>
 
 	* elf32-cris.c 	(cris_elf_howto_table): Add entry for R_CRIS_32_IE.
diff --git a/bfd/bfd-in2.h b/bfd/bfd-in2.h
index 37c24b7..75c7785 100644
--- a/bfd/bfd-in2.h
+++ b/bfd/bfd-in2.h
@@ -4472,13 +4472,6 @@ typedef struct bfd_symbol
      perhaps others someday.  */
 #define BSF_FUNCTION           (1 << 3)
 
-  /* The symbol is an indirect code object.  Unrelated to BSF_INDIRECT.
-     Relocations against a symbol with this flag have to evaluated at
-     run-time, where the function pointed to by this symbol is invoked
-     in order to determine the value to be used in the relocation.
-     BSF_FUNCTION must also be set for symbols with this flag.  */
-#define BSF_INDIRECT_FUNCTION  (1 << 4)
- 
   /* Used by the linker.  */
 #define BSF_KEEP               (1 << 5)
 #define BSF_KEEP_G             (1 << 6)
diff --git a/bfd/elf-bfd.h b/bfd/elf-bfd.h
index effa344..5418e7f 100644
--- a/bfd/elf-bfd.h
+++ b/bfd/elf-bfd.h
@@ -1287,9 +1287,6 @@ struct bfd_elf_section_data
   /* A pointer to the bfd section used for dynamic relocs.  */
   asection *sreloc;
 
-  /* A pointer to the bfd section used for dynamic relocs against ifunc symbols.  */
-  asection *indirect_relocs;
-
   union {
     /* Group name, if this section is a member of a group.  */
     const char *name;
@@ -1771,8 +1768,6 @@ extern asection * _bfd_elf_get_dynamic_reloc_section
   (bfd *, asection *, bfd_boolean);
 extern asection * _bfd_elf_make_dynamic_reloc_section
   (asection *, bfd *, unsigned int, bfd *, bfd_boolean);
-extern asection * _bfd_elf_make_ifunc_reloc_section
-  (bfd *, asection *, bfd *, unsigned int);
 extern long _bfd_elf_get_dynamic_reloc_upper_bound
   (bfd *);
 extern long _bfd_elf_canonicalize_dynamic_reloc
diff --git a/bfd/elf.c b/bfd/elf.c
index 7597d01..70ed765 100644
--- a/bfd/elf.c
+++ b/bfd/elf.c
@@ -6427,8 +6427,6 @@ Unable to find equivalent output section for symbol '%s' from section '%s'"),
 
       if ((flags & BSF_THREAD_LOCAL) != 0)
 	type = STT_TLS;
-      else if ((flags & BSF_INDIRECT_FUNCTION) != 0)
-	type = STT_IFUNC;
       else if ((flags & BSF_FUNCTION) != 0)
 	type = STT_FUNC;
       else if ((flags & BSF_OBJECT) != 0)
@@ -7122,7 +7120,6 @@ elf_find_function (bfd *abfd ATTRIBUTE_UNUSED,
 	  continue;
 	case STT_NOTYPE:
 	case STT_FUNC:
-	case STT_IFUNC:
 	  if (bfd_get_section (&q->symbol) == section
 	      && q->symbol.value >= low_func
 	      && q->symbol.value <= offset)
@@ -8941,10 +8938,10 @@ _bfd_elf_set_osabi (bfd * abfd,
 
 /* Return TRUE for ELF symbol types that represent functions.
    This is the default version of this function, which is sufficient for
-   most targets.  It returns true if TYPE is STT_FUNC or STT_IFUNC.  */
+   most targets.  It returns true if TYPE is STT_FUNC.  */
 
 bfd_boolean
 _bfd_elf_is_function_type (unsigned int type)
 {
-  return (type == STT_FUNC || type == STT_IFUNC);
+  return (type == STT_FUNC);
 }
diff --git a/bfd/elf32-arm.c b/bfd/elf32-arm.c
index dacbc16..24fa76a 100644
--- a/bfd/elf32-arm.c
+++ b/bfd/elf32-arm.c
@@ -9430,7 +9430,6 @@ arm_elf_find_function (bfd *         abfd ATTRIBUTE_UNUSED,
 	  filename = bfd_asymbol_name (&q->symbol);
 	  break;
 	case STT_FUNC:
-	case STT_IFUNC:
 	case STT_ARM_TFUNC:
 	case STT_NOTYPE:
 	  /* Skip mapping symbols.  */
@@ -9556,7 +9555,7 @@ elf32_arm_adjust_dynamic_symbol (struct bfd_link_info * info,
   /* If this is a function, put it in the procedure linkage table.  We
      will fill in the contents of the procedure linkage table later,
      when we know the address of the .got section.  */
-  if (h->type == STT_FUNC || h->type == STT_ARM_TFUNC || h->type == STT_IFUNC
+  if (h->type == STT_FUNC || h->type == STT_ARM_TFUNC
       || h->needs_plt)
     {
       if (h->plt.refcount <= 0
@@ -11730,8 +11729,7 @@ elf32_arm_swap_symbol_in (bfd * abfd,
 
   /* New EABI objects mark thumb function symbols by setting the low bit of
      the address.  Turn these into STT_ARM_TFUNC.  */
-  if ((ELF_ST_TYPE (dst->st_info) == STT_FUNC
-       || ELF_ST_TYPE (dst->st_info) == STT_IFUNC)
+  if ((ELF_ST_TYPE (dst->st_info) == STT_FUNC)
       && (dst->st_value & 1))
     {
       dst->st_info = ELF_ST_INFO (ELF_ST_BIND (dst->st_info), STT_ARM_TFUNC);
@@ -11832,7 +11830,7 @@ elf32_arm_additional_program_headers (bfd *abfd,
 static bfd_boolean
 elf32_arm_is_function_type (unsigned int type)
 {
-  return (type == STT_FUNC) || (type == STT_ARM_TFUNC) || (type == STT_IFUNC);
+  return (type == STT_FUNC) || (type == STT_ARM_TFUNC);
 }
 
 /* We use this to override swap_symbol_in and swap_symbol_out.  */
diff --git a/bfd/elf32-i386.c b/bfd/elf32-i386.c
index ec0c16f..dda6e1f 100644
--- a/bfd/elf32-i386.c
+++ b/bfd/elf32-i386.c
@@ -1193,26 +1193,6 @@ elf_i386_tls_transition (struct bfd_link_info *info, bfd *abfd,
   return TRUE;
 }
 
-/* Returns true if the hash entry refers to a symbol
-   marked for indirect handling during reloc processing.  */
-
-static bfd_boolean
-is_indirect_symbol (bfd * abfd, struct elf_link_hash_entry * h)
-{
-  const struct elf_backend_data * bed;
-
-  if (abfd == NULL || h == NULL)
-    return FALSE;
-
-  bed = get_elf_backend_data (abfd);
-
-  return h->type == STT_IFUNC
-    && bed != NULL
-    && (bed->elf_osabi == ELFOSABI_LINUX
-	/* GNU/Linux is still using the default value 0.  */
-	|| bed->elf_osabi == ELFOSABI_NONE);
-}
-
 /* Look through the relocs for a section during the first phase, and
    calculate needed space in the global offset table, procedure linkage
    table, and dynamic reloc sections.  */
@@ -1472,8 +1452,7 @@ elf_i386_check_relocs (bfd *abfd,
 		  && (sec->flags & SEC_ALLOC) != 0
 		  && h != NULL
 		  && (h->root.type == bfd_link_hash_defweak
-		      || !h->def_regular))
-	      || is_indirect_symbol (abfd, h))	      
+		      || !h->def_regular)))
 	    {
 	      struct elf_i386_dyn_relocs *p;
 	      struct elf_i386_dyn_relocs **head;
@@ -1493,9 +1472,6 @@ elf_i386_check_relocs (bfd *abfd,
 		    return FALSE;
 		}
 
-	      if (is_indirect_symbol (abfd, h))
-		(void) _bfd_elf_make_ifunc_reloc_section (abfd, sec, htab->elf.dynobj, 2);
-
 	      /* If this is a global symbol, we count the number of
 		 relocations we need for this symbol.  */
 	      if (h != NULL)
@@ -2057,15 +2033,6 @@ allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
 	    }
 	}
     }
-  else if (is_indirect_symbol (info->output_bfd, h))
-    {
-      if (h->dynindx == -1
-	  && !h->forced_local)
-	{
-	  if (! bfd_elf_link_record_dynamic_symbol (info, h))
-	    return FALSE;
-	}
-    }
   else if (ELIMINATE_COPY_RELOCS)
     {
       /* For the non-shared case, discard space for relocs against
@@ -2104,11 +2071,7 @@ allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
     {
       asection *sreloc;
 
-      if (! info->shared
-	  && is_indirect_symbol (info->output_bfd, h))
-	sreloc = elf_section_data (p->sec)->indirect_relocs;
-      else
-	sreloc = elf_section_data (p->sec)->sreloc;
+      sreloc = elf_section_data (p->sec)->sreloc;
 
       BFD_ASSERT (sreloc != NULL);
       sreloc->size += p->count * sizeof (Elf32_External_Rel);
@@ -2919,8 +2882,7 @@ elf_i386_relocate_section (bfd *output_bfd,
 		  && ((h->def_dynamic
 		       && !h->def_regular)
 		      || h->root.type == bfd_link_hash_undefweak
-		      || h->root.type == bfd_link_hash_undefined))
-	      || is_indirect_symbol (output_bfd, h))
+		      || h->root.type == bfd_link_hash_undefined)))
 	    {
 	      Elf_Internal_Rela outrel;
 	      bfd_byte *loc;
@@ -2960,10 +2922,7 @@ elf_i386_relocate_section (bfd *output_bfd,
 		  outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
 		}
 
-	      if ((! info->shared) && is_indirect_symbol (output_bfd, h))
-		sreloc = elf_section_data (input_section)->indirect_relocs;
-	      else
-		sreloc = elf_section_data (input_section)->sreloc;
+	      sreloc = elf_section_data (input_section)->sreloc;
 
 	      BFD_ASSERT (sreloc != NULL && sreloc->contents != NULL);
 
@@ -2976,7 +2935,7 @@ elf_i386_relocate_section (bfd *output_bfd,
 		 not want to fiddle with the addend.  Otherwise, we
 		 need to include the symbol value so that it becomes
 		 an addend for the dynamic reloc.  */
-	      if (! relocate || is_indirect_symbol (output_bfd, h))
+	      if (! relocate)
 		continue;
 	    }
 	  break;
diff --git a/bfd/elf64-x86-64.c b/bfd/elf64-x86-64.c
index 1ea033b..7e8a0fd 100644
--- a/bfd/elf64-x86-64.c
+++ b/bfd/elf64-x86-64.c
@@ -974,26 +974,6 @@ elf64_x86_64_tls_transition (struct bfd_link_info *info, bfd *abfd,
   return TRUE;
 }
 
-/* Returns true if the hash entry refers to a symbol
-   marked for indirect handling during reloc processing.  */
-
-static bfd_boolean
-is_indirect_symbol (bfd * abfd, struct elf_link_hash_entry * h)
-{
-  const struct elf_backend_data * bed;
-
-  if (abfd == NULL || h == NULL)
-    return FALSE;
-
-  bed = get_elf_backend_data (abfd);
-
-  return h->type == STT_IFUNC
-    && bed != NULL
-    && (bed->elf_osabi == ELFOSABI_LINUX
-	/* GNU/Linux is still using the default value 0.  */
-	|| bed->elf_osabi == ELFOSABI_NONE);
-}
-
 /* Look through the relocs for a section during the first phase, and
    calculate needed space in the global offset table, procedure
    linkage table, and dynamic reloc sections.  */
@@ -1275,10 +1255,8 @@ elf64_x86_64_check_relocs (bfd *abfd, struct bfd_link_info *info,
 	     If on the other hand, we are creating an executable, we
 	     may need to keep relocations for symbols satisfied by a
 	     dynamic library if we manage to avoid copy relocs for the
-	     symbol.
+	     symbol.  */
 
-	     Also we must keep any relocations against IFUNC symbols as
-	     they will be evaluated at load time.  */
 	  if ((info->shared
 	       && (sec->flags & SEC_ALLOC) != 0
 	       && (((r_type != R_X86_64_PC8)
@@ -1294,8 +1272,7 @@ elf64_x86_64_check_relocs (bfd *abfd, struct bfd_link_info *info,
 		  && (sec->flags & SEC_ALLOC) != 0
 		  && h != NULL
 		  && (h->root.type == bfd_link_hash_defweak
-		      || !h->def_regular))
-	      || is_indirect_symbol (abfd, h))
+		      || !h->def_regular)))
 	    {
 	      struct elf64_x86_64_dyn_relocs *p;
 	      struct elf64_x86_64_dyn_relocs **head;
@@ -1315,9 +1292,6 @@ elf64_x86_64_check_relocs (bfd *abfd, struct bfd_link_info *info,
 		    return FALSE;
 		}
 
-	      if (is_indirect_symbol (abfd, h))
-		(void) _bfd_elf_make_ifunc_reloc_section (abfd, sec, htab->elf.dynobj, 2);
-
 	      /* If this is a global symbol, we count the number of
 		 relocations we need for this symbol.  */
 	      if (h != NULL)
@@ -1857,13 +1831,6 @@ allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
 	    }
 	}
     }
-  else if (is_indirect_symbol (info->output_bfd, h))
-    {
-      if (h->dynindx == -1
-	  && ! h->forced_local
-	  && ! bfd_elf_link_record_dynamic_symbol (info, h))
-	return FALSE;    
-    }
   else if (ELIMINATE_COPY_RELOCS)
     {
       /* For the non-shared case, discard space for relocs against
@@ -1902,11 +1869,7 @@ allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
     {
       asection * sreloc;
 
-      if (! info->shared
-	  && is_indirect_symbol (info->output_bfd, h))
-	sreloc = elf_section_data (p->sec)->indirect_relocs;
-      else
-	sreloc = elf_section_data (p->sec)->sreloc;
+      sreloc = elf_section_data (p->sec)->sreloc;
 
       BFD_ASSERT (sreloc != NULL);
 
@@ -2721,8 +2684,7 @@ elf64_x86_64_relocate_section (bfd *output_bfd, struct bfd_link_info *info,
 		  && ((h->def_dynamic
 		       && !h->def_regular)
 		      || h->root.type == bfd_link_hash_undefweak
-		      || h->root.type == bfd_link_hash_undefined))
-	      || is_indirect_symbol (output_bfd, h))
+		      || h->root.type == bfd_link_hash_undefined)))
 	    {
 	      Elf_Internal_Rela outrel;
 	      bfd_byte *loc;
@@ -2808,10 +2770,7 @@ elf64_x86_64_relocate_section (bfd *output_bfd, struct bfd_link_info *info,
 		    }
 		}
 
-	      if ((! info->shared) && is_indirect_symbol (output_bfd, h))
-		sreloc = elf_section_data (input_section)->indirect_relocs;
-	      else
-		sreloc = elf_section_data (input_section)->sreloc;
+	      sreloc = elf_section_data (input_section)->sreloc;
 		
 	      BFD_ASSERT (sreloc != NULL && sreloc->contents != NULL);
 
@@ -2823,7 +2782,7 @@ elf64_x86_64_relocate_section (bfd *output_bfd, struct bfd_link_info *info,
 		 not want to fiddle with the addend.  Otherwise, we
 		 need to include the symbol value so that it becomes
 		 an addend for the dynamic reloc.  */
-	      if (! relocate || is_indirect_symbol (output_bfd, h))
+	      if (! relocate)
 		continue;
 	    }
 
diff --git a/bfd/elfcode.h b/bfd/elfcode.h
index cd8ffe4..b42229f 100644
--- a/bfd/elfcode.h
+++ b/bfd/elfcode.h
@@ -1311,9 +1311,6 @@ elf_slurp_symbol_table (bfd *abfd, asymbol **symptrs, bfd_boolean dynamic)
 	    case STT_SRELC:
 	      sym->symbol.flags |= BSF_SRELC;
 	      break;
-	    case STT_IFUNC:
-	      sym->symbol.flags |= BSF_INDIRECT_FUNCTION;
-	      break;
 	    }
 
 	  if (dynamic)
diff --git a/bfd/elflink.c b/bfd/elflink.c
index 952b4e0..92b40e9 100644
--- a/bfd/elflink.c
+++ b/bfd/elflink.c
@@ -2653,12 +2653,6 @@ _bfd_elf_adjust_dynamic_symbol (struct elf_link_hash_entry *h, void *data)
   dynobj = elf_hash_table (eif->info)->dynobj;
   bed = get_elf_backend_data (dynobj);
 
-  if (h->type == STT_IFUNC
-      && (bed->elf_osabi == ELFOSABI_LINUX
-	  /* GNU/Linux is still using the default value 0.  */
-	  || bed->elf_osabi == ELFOSABI_NONE))
-    h->needs_plt = 1;
-
   if (! (*bed->elf_backend_adjust_dynamic_symbol) (eif->info, h))
     {
       eif->failed = TRUE;
@@ -12407,71 +12401,3 @@ _bfd_elf_make_dynamic_reloc_section (asection *         sec,
 
   return reloc_sec;
 }
-
-#define IFUNC_INFIX ".ifunc"
-
-/* Returns the name of the ifunc-using-dynamic-reloc section associated with SEC.  */
-
-static const char *
-get_ifunc_reloc_section_name (bfd *       abfd,
-			      asection *  sec)
-{
-  const char *  dot;
-  char *        name;
-  const char *  base_name;
-  unsigned int  strndx = elf_elfheader (abfd)->e_shstrndx;
-  unsigned int  shnam = elf_section_data (sec)->rel_hdr.sh_name;
-
-  base_name = bfd_elf_string_from_elf_section (abfd, strndx, shnam);
-  if (base_name == NULL)
-    return NULL;
-
-  dot = strchr (base_name + 1, '.');
-  name = bfd_alloc (abfd, strlen (base_name) + strlen (IFUNC_INFIX) + 1);
-  sprintf (name, "%.*s%s%s", (int)(dot - base_name), base_name, IFUNC_INFIX, dot);
-
-  return name;
-}
-
-/* Like _bfd_elf_make_dynamic_reloc_section but it creates a
-   section for holding relocs against symbols with the STT_IFUNC
-   type.  The section is attached to the OWNER bfd but it is created
-   with a name based on SEC from ABFD.  */
-
-asection *
-_bfd_elf_make_ifunc_reloc_section (bfd *         abfd,
-				   asection *    sec,
-				   bfd *         owner,
-				   unsigned int  align)
-{
-  asection * reloc_sec = elf_section_data (sec)->indirect_relocs;
-
-  if (reloc_sec == NULL)
-    {
-      const char * name = get_ifunc_reloc_section_name (abfd, sec);
-
-      if (name == NULL)
-	return NULL;
-
-      reloc_sec = bfd_get_section_by_name (owner, name);
-
-      if (reloc_sec == NULL)
-	{
-	  flagword flags;
-
-	  flags = (SEC_HAS_CONTENTS | SEC_READONLY | SEC_IN_MEMORY | SEC_LINKER_CREATED);
-	  if ((sec->flags & SEC_ALLOC) != 0)
-	    flags |= SEC_ALLOC | SEC_LOAD;
-
-	  reloc_sec = bfd_make_section_with_flags (owner, name, flags);
-	  
-	  if (reloc_sec != NULL
-	      && ! bfd_set_section_alignment (owner, reloc_sec, align))
-	    reloc_sec = NULL;
-	}
-
-      elf_section_data (sec)->indirect_relocs = reloc_sec;
-    }
-
-  return reloc_sec;
-}
diff --git a/bfd/syms.c b/bfd/syms.c
index 9b4c652..9a7cbda 100644
--- a/bfd/syms.c
+++ b/bfd/syms.c
@@ -231,13 +231,6 @@ CODE_FRAGMENT
 .     perhaps others someday.  *}
 .#define BSF_FUNCTION		(1 << 3)
 .
-.  {* The symbol is an indirect code object.  Unrelated to BSF_INDIRECT.
-.     Relocations against a symbol with this flag have to evaluated at
-.     run-time, where the function pointed to by this symbol is invoked
-.     in order to determine the value to be used in the relocation.
-.     BSF_FUNCTION must also be set for symbols with this flag.  *}
-.#define BSF_INDIRECT_FUNCTION	(1 << 4)
-. 
 .  {* Used by the linker.  *}
 .#define BSF_KEEP		(1 << 5)
 .#define BSF_KEEP_G		(1 << 6)
@@ -490,7 +483,7 @@ bfd_print_symbol_vandf (bfd *abfd, void *arg, asymbol *symbol)
 	   (type & BSF_WEAK) ? 'w' : ' ',
 	   (type & BSF_CONSTRUCTOR) ? 'C' : ' ',
 	   (type & BSF_WARNING) ? 'W' : ' ',
-	   (type & BSF_INDIRECT) ? 'I' : (type & BSF_INDIRECT_FUNCTION) ? 'i' : ' ',
+	   (type & BSF_INDIRECT) ? 'I' : ' ',
 	   (type & BSF_DEBUGGING) ? 'd' : (type & BSF_DYNAMIC) ? 'D' : ' ',
 	   ((type & BSF_FUNCTION)
 	    ? 'F'
@@ -676,8 +669,6 @@ bfd_decode_symclass (asymbol *symbol)
     }
   if (bfd_is_ind_section (symbol->section))
     return 'I';
-  if (symbol->flags & BSF_INDIRECT_FUNCTION)
-    return 'i';
   if (symbol->flags & BSF_WEAK)
     {
       /* If weak, determine if it's specifically an object