bfd/

2005-07-25  Jan Hubicka  <jh@suse.cz>
	    H.J. Lu  <hongjiu.lu@intel.com>

	* elf-bfd.h (_bfd_elf_large_com_section): New.
	* elf.c (_bfd_elf_large_com_section): New. Defined.

	* elf64-x86-64.c (elf64_x86_64_add_symbol_hook): New.
	(elf64_x86_64_elf_section_from_bfd_section): New.
	(elf64_x86_64_symbol_processing): New.
	(elf64_x86_64_common_definition): New.
	(elf64_x86_64_common_section_index): New.
	(elf64_x86_64_common_section): New.
	(elf64_x86_64_merge_symbol): New.
	(elf64_x86_64_additional_program_headers): New.
	(elf64_x86_64_special_sections): New.
	(elf_backend_section_from_bfd_section): New. Defined.
	(elf_backend_add_symbol_hook): Likewise.
	(elf_backend_common_section_index): Likewise.
	(elf_backend_common_section): Likewise.
	(elf_backend_common_definition): Likewise.
	(elf_backend_merge_symbol): Likewise.
	(elf_backend_special_sections): Likewise.
	(elf_backend_additional_program_headers): Likewise.

binutils/

2005-07-25  H.J. Lu  <hongjiu.lu@intel.com>

	* readelf.c (dump_relocations): Handle SHN_X86_64_LCOMMON.
	(get_symbol_index_type): Likewise.
	(get_elf_section_flags): Handle SHF_X86_64_LARGE.

gas/

2005-07-25  Jan Hubicka  <jh@suse.cz>
	    H.J. Lu  <hongjiu.lu@intel.com>

	* config/obj-elf.c: Include "elf/x86-64.h" if TC_I386 is
	defined.
	(elf_com_section_ptr): New.
	(elf_begin): Set elf_com_section_ptr to bfd_com_section_ptr.
	(elf_common_parse): Make it global. Use elf_com_section_ptr
	instead of bfd_com_section_ptr.
	(obj_elf_change_section): Handle x86-64 large bss sections.

	* config/obj-elf.h (elf_com_section_ptr): New.
	(elf_common_parse): New.

	* config/tc-i386.c (handle_large_common): New.
	(md_pseudo_table): Add "largecomm".
	(x86_64_section_letter): New.
	(x86_64_section_word): New.

	* config/tc-i386.h (x86_64_section_word): New.
	(x86_64_section_letter): New.
	(md_elf_section_letter): New. Defined.
	(md_elf_section_word): Likewise.

include/elf/

2005-07-25  Jan Hubicka  <jh@suse.cz>

	* x86-64.h (SHN_X86_64_LCOMMON): New.
	(SHF_X86_64_LARGE): New.

ld/

2005-07-25  Jan Hubicka  <jh@suse.cz>
	    H.J. Lu  <hongjiu.lu@intel.com>

	* emulparams/elf_x86_64.sh (LARGE_SECTIONS): New.

	* scripttempl/elf.sc: Updated for large section support.

bfd/ChangeLog

@@ -1,3 +1,27 @@
+2005-07-25  Jan Hubicka  <jh@suse.cz>
+	    H.J. Lu  <hongjiu.lu@intel.com>
+
+	* elf-bfd.h (_bfd_elf_large_com_section): New.
+	* elf.c (_bfd_elf_large_com_section): New. Defined.
+
+	* elf64-x86-64.c (elf64_x86_64_add_symbol_hook): New.
+	(elf64_x86_64_elf_section_from_bfd_section): New.
+	(elf64_x86_64_symbol_processing): New.
+	(elf64_x86_64_common_definition): New.
+	(elf64_x86_64_common_section_index): New.
+	(elf64_x86_64_common_section): New.
+	(elf64_x86_64_merge_symbol): New.
+	(elf64_x86_64_additional_program_headers): New.
+	(elf64_x86_64_special_sections): New.
+	(elf_backend_section_from_bfd_section): New. Defined.
+	(elf_backend_add_symbol_hook): Likewise.
+	(elf_backend_common_section_index): Likewise.
+	(elf_backend_common_section): Likewise.
+	(elf_backend_common_definition): Likewise.
+	(elf_backend_merge_symbol): Likewise.
+	(elf_backend_special_sections): Likewise.
+	(elf_backend_additional_program_headers): Likewise.
+
 2005-07-25  H.J. Lu  <hongjiu.lu@intel.com>
 
 	* elf-bfd.h (elf_backend_data): Add common_definition,

bfd/elf-bfd.h

@@ -1834,6 +1834,9 @@ extern bfd *_bfd_elf64_bfd_from_remote_memory
   (bfd *templ, bfd_vma ehdr_vma, bfd_vma *loadbasep,
    int (*target_read_memory) (bfd_vma, bfd_byte *, int));
 
+/* Large common section.  */
+extern asection _bfd_elf_large_com_section;
+
 /* SH ELF specific routine.  */
 
 extern bfd_boolean _sh_elf_set_mach_from_flags

bfd/elf.c

@@ -8456,3 +8456,9 @@ done:
 
   return result;
 }
+
+/* It is only used by x86-64 so far.  */
+asection _bfd_elf_large_com_section
+  = BFD_FAKE_SECTION (_bfd_elf_large_com_section,
+		      SEC_IS_COMMON, NULL, NULL, "LARGE_COMMON",
+		      0);

bfd/elf64-x86-64.c

@@ -2906,6 +2906,181 @@ elf64_x86_64_section_from_shdr (bfd *abfd,
   return TRUE;
 }
 
+/* Hook called by the linker routine which adds symbols from an object
+   file.  We use it to put SHN_X86_64_LCOMMON items in .lbss, instead
+   of .bss.  */
+
+static bfd_boolean
+elf64_x86_64_add_symbol_hook (bfd *abfd,
+			      struct bfd_link_info *info ATTRIBUTE_UNUSED,
+			      Elf_Internal_Sym *sym,
+			      const char **namep ATTRIBUTE_UNUSED,
+			      flagword *flagsp ATTRIBUTE_UNUSED,
+			      asection **secp, bfd_vma *valp)
+{
+  asection *lcomm;
+
+  switch (sym->st_shndx)
+    {
+    case SHN_X86_64_LCOMMON:
+      lcomm = bfd_get_section_by_name (abfd, "LARGE_COMMON");
+      if (lcomm == NULL)
+	{
+	  lcomm = bfd_make_section_with_flags (abfd,
+					       "LARGE_COMMON",
+					       (SEC_ALLOC
+						| SEC_IS_COMMON
+						| SEC_LINKER_CREATED));
+	  if (lcomm == NULL)
+	    return FALSE;
+	  elf_section_flags (lcomm) |= SHF_X86_64_LARGE;
+	}
+      *secp = lcomm;
+      *valp = sym->st_size;
+      break;
+    }
+  return TRUE;
+}
+
+
+/* Given a BFD section, try to locate the corresponding ELF section
+   index.  */
+
+static bfd_boolean
+elf64_x86_64_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED,
+					   asection *sec, int *index)
+{
+  if (sec == &_bfd_elf_large_com_section)
+    {
+      *index = SHN_X86_64_LCOMMON;
+      return TRUE;
+    }
+  return FALSE;
+}
+
+/* Process a symbol.  */
+
+static void
+elf64_x86_64_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED,
+				asymbol *asym)
+{
+  elf_symbol_type *elfsym = (elf_symbol_type *) asym;
+
+  switch (elfsym->internal_elf_sym.st_shndx)
+    {
+    case SHN_X86_64_LCOMMON:
+      asym->section = &_bfd_elf_large_com_section;
+      asym->value = elfsym->internal_elf_sym.st_size;
+      /* Common symbol doesn't set BSF_GLOBAL.  */
+      asym->flags &= ~BSF_GLOBAL;
+      break;
+    }
+}
+
+static bfd_boolean
+elf64_x86_64_common_definition (Elf_Internal_Sym *sym)
+{
+  return (sym->st_shndx == SHN_COMMON
+	  || sym->st_shndx == SHN_X86_64_LCOMMON);
+}
+
+static unsigned int
+elf64_x86_64_common_section_index (asection *sec)
+{
+  if ((elf_section_flags (sec) & SHF_X86_64_LARGE) == 0)
+    return SHN_COMMON;
+  else
+    return SHN_X86_64_LCOMMON;
+}
+
+static asection *
+elf64_x86_64_common_section (asection *sec)
+{
+  if ((elf_section_flags (sec) & SHF_X86_64_LARGE) == 0)
+    return bfd_com_section_ptr;
+  else
+    return &_bfd_elf_large_com_section;
+}
+
+static bfd_boolean
+elf64_x86_64_merge_symbol (struct bfd_link_info *info ATTRIBUTE_UNUSED,
+			   struct elf_link_hash_entry **sym_hash ATTRIBUTE_UNUSED,
+			   struct elf_link_hash_entry *h,
+			   Elf_Internal_Sym *sym,
+			   asection **psec ATTRIBUTE_UNUSED,
+			   bfd_vma *pvalue ATTRIBUTE_UNUSED,
+			   unsigned int *pold_alignment ATTRIBUTE_UNUSED,
+			   bfd_boolean *skip ATTRIBUTE_UNUSED,
+			   bfd_boolean *override ATTRIBUTE_UNUSED,
+			   bfd_boolean *type_change_ok ATTRIBUTE_UNUSED,
+			   bfd_boolean *size_change_ok ATTRIBUTE_UNUSED,
+			   bfd_boolean *newdef ATTRIBUTE_UNUSED,
+			   bfd_boolean *newdyn,
+			   bfd_boolean *newdyncommon ATTRIBUTE_UNUSED,
+			   bfd_boolean *newweak ATTRIBUTE_UNUSED,
+			   bfd *abfd ATTRIBUTE_UNUSED,
+			   asection **sec,
+			   bfd_boolean *olddef ATTRIBUTE_UNUSED,
+			   bfd_boolean *olddyn,
+			   bfd_boolean *olddyncommon ATTRIBUTE_UNUSED,
+			   bfd_boolean *oldweak ATTRIBUTE_UNUSED,
+			   bfd *oldbfd ATTRIBUTE_UNUSED,
+			   asection **oldsec)
+{
+  /* A normal common symbol and a large common symbol result in a
+     normal common symbol.  If we see the normal symbol first, we
+     do nothing since the first one will be used.  If we see the
+     large common symbol first, we need to change the large common
+     symbol to the normal common symbol.  */
+  if (!*olddyn
+      && h->root.type == bfd_link_hash_common
+      && !*newdyn
+      && bfd_is_com_section (*sec)
+      && *oldsec != *sec
+      && sym->st_shndx == SHN_COMMON
+      && (elf_section_flags (*oldsec) & SHF_X86_64_LARGE) != 0)
+    {
+      h->root.u.c.p->section = bfd_make_section_old_way (abfd,
+							 "COMMON");
+      h->root.u.c.p->section->flags = SEC_ALLOC;
+    }
+
+  return TRUE;
+}
+
+static int
+elf64_x86_64_additional_program_headers (bfd *abfd)
+{
+  asection *s;
+  int count = 0; 
+
+  /* Check to see if we need a large readonly segment.  */
+  s = bfd_get_section_by_name (abfd, ".lrodata");
+  if (s && (s->flags & SEC_LOAD))
+    count++;
+
+  /* Check to see if we need a large data segment.  Since .lbss sections
+     is placed right after the .bss section, there should be no need for
+     a large data segment just because of .lbss.  */
+  s = bfd_get_section_by_name (abfd, ".ldata");
+  if (s && (s->flags & SEC_LOAD))
+    count++;
+
+  return count;
+}
+
+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 }
+};
+
 #define TARGET_LITTLE_SYM		    bfd_elf64_x86_64_vec
 #define TARGET_LITTLE_NAME		    "elf64-x86-64"
 #define ELF_ARCH			    bfd_arch_i386
@@ -2946,4 +3121,23 @@ elf64_x86_64_section_from_shdr (bfd *abfd,
 #define elf_backend_section_from_shdr \
 	elf64_x86_64_section_from_shdr
 
+#define elf_backend_section_from_bfd_section \
+  elf64_x86_64_elf_section_from_bfd_section
+#define elf_backend_add_symbol_hook \
+  elf64_x86_64_add_symbol_hook
+#define elf_backend_symbol_processing \
+  elf64_x86_64_symbol_processing
+#define elf_backend_common_section_index \
+  elf64_x86_64_common_section_index
+#define elf_backend_common_section \
+  elf64_x86_64_common_section
+#define elf_backend_common_definition \
+  elf64_x86_64_common_definition
+#define elf_backend_merge_symbol \
+  elf64_x86_64_merge_symbol
+#define elf_backend_special_sections \
+  elf64_x86_64_special_sections
+#define elf_backend_additional_program_headers \
+  elf64_x86_64_additional_program_headers
+
 #include "elf64-target.h"

binutils/ChangeLog

@@ -1,3 +1,9 @@
+2005-07-25  H.J. Lu  <hongjiu.lu@intel.com>
+
+	* readelf.c (dump_relocations): Handle SHN_X86_64_LCOMMON.
+	(get_symbol_index_type): Likewise.
+	(get_elf_section_flags): Handle SHF_X86_64_LARGE.
+
 2005-07-21  Eric Christopher  <echristo@apple.com>
 
 	* MAINTAINERS: Change affiliation.

binutils/readelf.c

@@ -1355,6 +1355,9 @@ dump_relocations (FILE *file,
 			sec_name = "ABS";
 		      else if (psym->st_shndx == SHN_COMMON)
 			sec_name = "COMMON";
+		      else if (elf_header.e_machine == EM_X86_64
+			       && psym->st_shndx == SHN_X86_64_LCOMMON)
+			sec_name = "LARGE_COMMON";
 		      else if (elf_header.e_machine == EM_IA_64
 			       && elf_header.e_ident[EI_OSABI] == ELFOSABI_HPUX
 			       && psym->st_shndx == SHN_IA_64_ANSI_COMMON)
@@ -3789,7 +3792,10 @@ get_elf_section_flags (bfd_vma sh_flags)
 	case SHF_TLS:		   *p = 'T'; break;
 
 	default:
-	  if (flag & SHF_MASKOS)
+	  if (elf_header.e_machine == EM_X86_64
+	      && flag == SHF_X86_64_LARGE)
+	    *p = 'l';
+	  else if (flag & SHF_MASKOS)
 	    {
 	      *p = 'o';
 	      sh_flags &= ~ SHF_MASKOS;
@@ -6698,6 +6704,9 @@ get_symbol_index_type (unsigned int type)
 	  && elf_header.e_machine == EM_IA_64
 	  && elf_header.e_ident[EI_OSABI] == ELFOSABI_HPUX)
 	return "ANSI_COM";
+      else if (elf_header.e_machine == EM_X86_64
+	       && type == SHN_X86_64_LCOMMON)
+	return "LARGE_COM";
       else if (type >= SHN_LOPROC && type <= SHN_HIPROC)
 	sprintf (buff, "PRC[0x%04x]", type);
       else if (type >= SHN_LOOS && type <= SHN_HIOS)

gas/ChangeLog

@@ -1,3 +1,27 @@
+2005-07-25  Jan Hubicka  <jh@suse.cz>
+	    H.J. Lu  <hongjiu.lu@intel.com>
+
+	* config/obj-elf.c: Include "elf/x86-64.h" if TC_I386 is
+	defined.
+	(elf_com_section_ptr): New.
+	(elf_begin): Set elf_com_section_ptr to bfd_com_section_ptr.
+	(elf_common_parse): Make it global. Use elf_com_section_ptr
+	instead of bfd_com_section_ptr.
+	(obj_elf_change_section): Handle x86-64 large bss sections.
+
+	* config/obj-elf.h (elf_com_section_ptr): New.
+	(elf_common_parse): New.
+
+	* config/tc-i386.c (handle_large_common): New.
+	(md_pseudo_table): Add "largecomm".
+	(x86_64_section_letter): New.
+	(x86_64_section_word): New.
+
+	* config/tc-i386.h (x86_64_section_word): New.
+	(x86_64_section_letter): New.
+	(md_elf_section_letter): New. Defined.
+	(md_elf_section_word): Likewise.
+
 2005-07-21  Ralf Corsepius  <ralf.corsepius@rtems.org>
 
 	* configure.tgt: Remove i386-*-rtemself*.

gas/config/obj-elf.c

@@ -53,6 +53,10 @@
 #include "elf/i370.h"
 #endif
 
+#ifdef TC_I386
+#include "elf/x86-64.h"
+#endif
+
 static void obj_elf_line (int);
 static void obj_elf_size (int);
 static void obj_elf_type (int);
@@ -174,6 +178,8 @@ static const pseudo_typeS ecoff_debug_pseudo_table[] =
 
 /* This is called when the assembler starts.  */
 
+asection *elf_com_section_ptr;
+
 void
 elf_begin (void)
 {
@@ -186,6 +192,7 @@ elf_begin (void)
   symbol_table_insert (section_symbol (s));
   s = bfd_get_section_by_name (stdoutput, BSS_SECTION_NAME);
   symbol_table_insert (section_symbol (s));
+  elf_com_section_ptr = bfd_com_section_ptr;
 }
 
 void
@@ -270,7 +277,7 @@ elf_file_symbol (const char *s, int appfile)
 /* Called from read.c:s_comm after we've parsed .comm symbol, size.
    Parse a possible alignment value.  */
 
-static symbolS *
+symbolS *
 elf_common_parse (int ignore ATTRIBUTE_UNUSED, symbolS *symbolP, addressT size)
 {
   addressT align = 0;
@@ -334,7 +341,7 @@ elf_common_parse (int ignore ATTRIBUTE_UNUSED, symbolS *symbolP, addressT size)
       S_SET_VALUE (symbolP, size);
       S_SET_ALIGN (symbolP, align);
       S_SET_EXTERNAL (symbolP);
-      S_SET_SEGMENT (symbolP, bfd_com_section_ptr);
+      S_SET_SEGMENT (symbolP, elf_com_section_ptr);
     }
 
   symbol_get_bfdsym (symbolP)->flags |= BSF_OBJECT;
@@ -569,7 +576,16 @@ obj_elf_change_section (const char *name,
 		 .section .init_array,"aw",@progbits
 
 		 for __attribute__ ((section (".init_array"))).
+		 "@progbits" is incorrect.  Also for x86-64 large bss
+		 sections, gcc, as of 2005-07-06, will emit
+
+		 .section .lbss,"aw",@progbits
+
 		 "@progbits" is incorrect.  */
+#ifdef TC_I386
+	      && (bed->s->arch_size != 64
+		  || !(ssect->attr & SHF_X86_64_LARGE))
+#endif
 	      && ssect->type != SHT_INIT_ARRAY
 	      && ssect->type != SHT_FINI_ARRAY
 	      && ssect->type != SHT_PREINIT_ARRAY)

gas/config/obj-elf.h

@@ -244,5 +244,8 @@ extern void elf_pop_insert (void);
 struct ecoff_extr;
 extern void elf_ecoff_set_ext (symbolS *, struct ecoff_extr *);
 #endif
+extern asection *elf_com_section_ptr;
+extern symbolS * elf_common_parse (int ignore ATTRIBUTE_UNUSED, symbolS *symbolP,
+				   addressT size);
 
 #endif /* _OBJ_ELF_H */

gas/config/tc-i386.c

@@ -305,6 +305,7 @@ static int allow_naked_reg = 0;
    leave, push, and pop instructions so that gcc has the same stack
    frame as in 32 bit mode.  */
 static char stackop_size = '\0';
+static void handle_large_common (int small ATTRIBUTE_UNUSED);
 
 /* Non-zero to optimize code alignment.  */
 int optimize_align_code = 1;
@@ -467,6 +468,9 @@ const pseudo_typeS md_pseudo_table[] =
   {"att_syntax", set_intel_syntax, 0},
   {"file", (void (*) PARAMS ((int))) dwarf2_directive_file, 0},
   {"loc", dwarf2_directive_loc, 0},
+#if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)
+  {"largecomm", handle_large_common, 0},
+#endif
 #ifdef TE_PE
   {"secrel32", pe_directive_secrel, 0},
 #endif
@@ -6990,3 +6994,71 @@ tc_pe_dwarf2_emit_offset (symbolS *symbol, unsigned int size)
   emit_expr (&expr, size);
 }
 #endif
+
+#if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)
+/* For ELF on x86-64, add support for SHF_X86_64_LARGE.  */
+
+int
+x86_64_section_letter (int letter, char **ptr_msg)
+{
+  if (flag_code == CODE_64BIT)
+    {
+      if (letter == 'l')
+	return SHF_X86_64_LARGE;
+
+      *ptr_msg = _("Bad .section directive: want a,l,w,x,M,S,G,T in string");
+     }
+  else
+   *ptr_msg = _("Bad .section directive: want a,w,x,M,S,G,T in string");
+  return -1;
+}
+
+int
+x86_64_section_word (char *str, size_t len)
+{
+  if (len == 5 && flag_code == CODE_64BIT && strncmp (str, "large", 5) == 0)
+    return SHF_X86_64_LARGE;
+
+  return -1;
+}
+
+static void
+handle_large_common (int small ATTRIBUTE_UNUSED)
+{
+  if (flag_code != CODE_64BIT)
+    {
+      s_comm_internal (0, elf_common_parse);
+      as_warn (_(".largecomm supported only in 64bit mode, producing .comm"));
+    }
+  else
+    {
+      static segT lbss_section;
+      asection *saved_com_section_ptr = elf_com_section_ptr;
+      asection *saved_bss_section = bss_section;
+
+      if (lbss_section == NULL)
+	{
+	  flagword applicable;
+	  segT seg = now_seg;
+	  subsegT subseg = now_subseg;
+
+	  /* The .lbss section is for local .largecomm symbols.  */
+	  lbss_section = subseg_new (".lbss", 0);
+	  applicable = bfd_applicable_section_flags (stdoutput);
+	  bfd_set_section_flags (stdoutput, lbss_section,
+				 applicable & SEC_ALLOC);
+	  seg_info (lbss_section)->bss = 1;
+
+	  subseg_set (seg, subseg);
+	}
+
+      elf_com_section_ptr = &_bfd_elf_large_com_section;
+      bss_section = lbss_section;
+
+      s_comm_internal (0, elf_common_parse);
+
+      elf_com_section_ptr = saved_com_section_ptr;
+      bss_section = saved_bss_section;
+    }
+}
+#endif /* OBJ_ELF || OBJ_MAYBE_ELF */

gas/config/tc-i386.h

@@ -501,6 +501,12 @@ extern void tc_x86_frame_initial_instructions PARAMS ((void));
 #define md_elf_section_type(str,len) i386_elf_section_type (str, len)
 extern int i386_elf_section_type PARAMS ((const char *, size_t len));
 
+/* Support for SHF_X86_64_LARGE */
+extern int x86_64_section_word PARAMS ((char *, size_t));
+extern int x86_64_section_letter PARAMS ((int letter, char **ptr_msg));
+#define md_elf_section_letter(LETTER, PTR_MSG)	x86_64_section_letter (LETTER, PTR_MSG)
+#define md_elf_section_word(STR, LEN)		x86_64_section_word (STR, LEN)
+
 #ifdef TE_PE
 
 #define O_secrel O_md1

include/elf/ChangeLog

@@ -1,3 +1,8 @@
+2005-07-25  Jan Hubicka  <jh@suse.cz>
+
+	* x86-64.h (SHN_X86_64_LCOMMON): New.
+	(SHF_X86_64_LARGE): New.
+
 2005-07-20  Kazuhiro Inaoka  <inaoka.kazuhiro@renesas.com>
 
 	* m32r.h (R_M32R_REL32): Added.

include/elf/x86-64.h

@@ -61,4 +61,9 @@ END_RELOC_NUMBERS (R_X86_64_max)
 
 #define SHT_X86_64_UNWIND	0x70000001	/* unwind information */
 
+/* Like SHN_COMMON but the symbol will be allocated in the .lbss
+   section.  */
+#define SHN_X86_64_LCOMMON 	0xff02
+
+#define SHF_X86_64_LARGE	0x10000000
 #endif

ld/ChangeLog

@@ -1,3 +1,10 @@
+2005-07-25  Jan Hubicka  <jh@suse.cz>
+	    H.J. Lu  <hongjiu.lu@intel.com>
+
+	* emulparams/elf_x86_64.sh (LARGE_SECTIONS): New.
+
+	* scripttempl/elf.sc: Updated for large section support.
+
 2005-07-21  Ralf Corsepius  <ralf.corsepius@rtems.org>
 
 	* configure.tgt: Remove i[3-7]86-*-rtemself*.

ld/emulparams/elf_x86_64.sh

@@ -12,6 +12,7 @@ TEMPLATE_NAME=elf32
 GENERATE_SHLIB_SCRIPT=yes
 GENERATE_PIE_SCRIPT=yes
 NO_SMALL_DATA=yes
+LARGE_SECTIONS=yes
 SEPARATE_GOTPLT=24
 
 if [ "x${host}" = "x${target}" ]; then

ld/scripttempl/elf.sc

@@ -78,6 +78,9 @@
 #  .debug_info	.gnu.linkonce.wi.foo
 #  .tdata	.gnu.linkonce.td.foo
 #  .tbss	.gnu.linkonce.tb.foo
+#  .lrodata	.gnu.linkonce.lr.foo
+#  .ldata	.gnu.linkonce.l.foo
+#  .lbss	.gnu.linkonce.lb.foo
 #
 #  Each of these can also have corresponding .rel.* and .rela.* sections.
 
@@ -157,6 +160,31 @@ if test -z "${SDATA_GOT}"; then
     SDATA_GOT=" "
   fi
 fi
+if test -n "${LARGE_SECTIONS}"; then
+  LBSS="
+  .lbss ${RELOCATING-0} :
+  {
+   *(.dynlbss)
+   *(.lbss${RELOCATING+ .lbss.* .gnu.linkonce.lb.*})
+   *(LARGE_COMMON)
+  }"
+  LARGE_SECTIONS="
+  .lrodata ${RELOCATING-0} ${RELOCATING+ALIGN(${MAXPAGESIZE}) + (. & (${MAXPAGESIZE} - 1))} :
+  {
+   *(.lrodata${RELOCATING+ .lrodata.* .gnu.linkonce.lr.*})
+  }
+  .ldata ${RELOCATING-0} ${RELOCATING+ALIGN(${MAXPAGESIZE}) + (. & (${MAXPAGESIZE} - 1))} :
+  {
+   *(.ldata${RELOCATING+ .ldata.* .gnu.linkonce.l.*})
+   ${RELOCATING+. = ALIGN(. != 0 ? ${ALIGNMENT} : 1);}
+  }"
+  REL_LDATA=".rel.ldata    ${RELOCATING-0} : { *(.rel.ldata${RELOCATING+ .rel.ldata.* .rel.gnu.linkonce.l.*}) }
+  .rela.ldata   ${RELOCATING-0} : { *(.rela.ldata${RELOCATING+ .rela.ldata.* .rela.gnu.linkonce.l.*}) }"
+  REL_LBSS=".rel.lbss     ${RELOCATING-0} : { *(.rel.lbss${RELOCATING+ .rel.lbss.* .rel.gnu.linkonce.lb.*}) }
+  .rela.lbss    ${RELOCATING-0} : { *(.rela.lbss${RELOCATING+ .rela.lbss.* .rela.gnu.linkonce.lb.*}) }"
+  REL_LRODATA=".rel.lrodata       ${RELOCATING-0} : { *(.rel.lrodata${RELOCATING+ .rel.lrodata.* .rel.gnu.linkonce.lr.*}) }
+  .rela.lrodata       ${RELOCATING-0} : { *(.rela.lrodata${RELOCATING+ .rela.lrodata.* .rela.gnu.linkonce.lr.*}) }"
+fi
 test -n "$SEPARATE_GOTPLT" && SEPARATE_GOTPLT=" "
 CTOR=".ctors        ${CONSTRUCTING-0} : 
   {
@@ -274,6 +302,9 @@ eval $COMBRELOCCAT <<EOF
   ${REL_SBSS2}
   .rel.bss      ${RELOCATING-0} : { *(.rel.bss${RELOCATING+ .rel.bss.* .rel.gnu.linkonce.b.*}) }
   .rela.bss     ${RELOCATING-0} : { *(.rela.bss${RELOCATING+ .rela.bss.* .rela.gnu.linkonce.b.*}) }
+  ${REL_LDATA}
+  ${REL_LBSS}
+  ${REL_LRODATA}
 EOF
 if [ -n "$COMBRELOC" ]; then
 cat <<EOF
@@ -397,13 +428,17 @@ cat <<EOF
    *(COMMON)
    /* Align here to ensure that the .bss section occupies space up to
       _end.  Align after .bss to ensure correct alignment even if the
-      .bss section disappears because there are no input sections.  */
+      .bss section disappears because there are no input sections.
+      FIXME: Why do we need it? When there is no .bss section, we don't
+      pad the .data section.  */
    ${RELOCATING+. = ALIGN(. != 0 ? ${ALIGNMENT} : 1);}
   }
+  ${LBSS}
   ${OTHER_BSS_SECTIONS}
+  ${RELOCATING+${OTHER_BSS_END_SYMBOLS}}
+  ${LARGE_SECTIONS}
   ${RELOCATING+. = ALIGN(${ALIGNMENT});}
   ${RELOCATING+_end = .;}
-  ${RELOCATING+${OTHER_BSS_END_SYMBOLS}}
   ${RELOCATING+PROVIDE (end = .);}
   ${RELOCATING+${DATA_SEGMENT_END}}