Add pe/x86_64 bigobj file format.

bfd/
	* peicode.h (pe_ILF_object_p): Adjust, as the version number
	has been read.
	(pe_bfd_object_p): Also read version number to detect ILF.
	* pe-x86_64.c (COFF_WITH_PE_BIGOBJ): Define.
	(x86_64pe_bigobj_vec): Define
	* coffcode.h (bfd_coff_backend_data): Add _bfd_coff_max_nscns field.
	(bfd_coff_max_nscns): New macro.
	(coff_compute_section_file_positions): Use unsigned int for
	target_index.  Compare with bfd_coff_max_nscns.
	(bfd_coff_std_swap_table, ticoff0_swap_table, ticoff1_swap_table):
	Set a value for _bfd_coff_max_nscns.
	(header_bigobj_classid): New constant.
	(coff_bigobj_swap_filehdr_in, coff_bigobj_swap_filehdr_out)
	(coff_bigobj_swap_sym_in, coff_bigobj_swap_sym_out)
	(coff_bigobj_swap_aux_in, coff_bigobj_swap_aux_out): New
	functions.
	(bigobj_swap_table): New table.
	* libcoff.h: Regenerate.
	* coff-sh.c (bfd_coff_small_swap_table): Likewise.
	* coff-alpha.c (alpha_ecoff_backend_data): Add value for
	_bfd_coff_max_nscns.
	* coff-mips.c (mips_ecoff_backend_data): Likewise.
	* coff-rs6000.c (bfd_xcoff_backend_data)
	(bfd_pmac_xcoff_backend_data): Likewise.
	* coff64-rs6000.c (bfd_xcoff_backend_data)
	(bfd_xcoff_aix5_backend_data): Likewise.
	* targets.c (x86_64pe_bigobj_vec): Declare.
	* configure.in (x86_64pe_bigobj_vec): New vector.
	* configure: Regenerate.
	* config.bfd: Add bigobj object format for Windows targets.

gas/
	* config/tc-i386.c (use_big_obj): Declare.
	(OPTION_MBIG_OBJ): Define.
	(md_longopts): Add -mbig-obj option.
	(md_parse_option): Handle it.
	(md_show_usage): Display help for this option.
	(i386_target_format): Use bigobj for x86-64 if -mbig-obj.
	* doc/c-i386.texi: Document the option.

gas/testsuite/
	* gas/pe/big-obj.d, gas/pe/big-obj.s: Add test.
	* gas/pe/pe.exp: Add test.

include/coff/
	* pe.h (struct external_ANON_OBJECT_HEADER_BIGOBJ): Declare.
	(FILHSZ_BIGOBJ): Define.
	(struct external_SYMBOL_EX): Declare.
	(SYMENT_BIGOBJ, SYMESZ_BIGOBJ): Define.
	(union external_AUX_SYMBOL_EX): Declare.
	(AUXENT_BIGOBJ, AUXESZ_BIGOBJ): Define.
	* internal.h (struct internal_filehdr): Change type
	of f_nscns.

1 files changed, 54 insertions, 0 deletions

diff --git a/bfd/pe-x86_64.c b/bfd/pe-x86_64.c
index 26bb99d384..16b13ecc93 100644
--- a/bfd/pe-x86_64.c
+++ b/bfd/pe-x86_64.c
@@ -27,6 +27,7 @@
 #define TARGET_NAME 		"pe-x86-64"
 #define COFF_WITH_PE
 #define COFF_WITH_pex64
+#define COFF_WITH_PE_BIGOBJ
 #define PCRELOFFSET 		TRUE
 #if defined (USE_MINGW64_LEADING_UNDERSCORES)
 #define TARGET_UNDERSCORE 	'_'
@@ -58,3 +59,56 @@
   COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 0 }
 
 #include "coff-x86_64.c"
+
+/* Entry for big object files.  */
+
+const bfd_target
+x86_64pe_bigobj_vec =
+{
+  "pe-bigobj-x86-64",			/* Name.  */
+  bfd_target_coff_flavour,
+  BFD_ENDIAN_LITTLE,		/* Data byte order is little.  */
+  BFD_ENDIAN_LITTLE,		/* Header byte order is little.  */
+
+  (HAS_RELOC | EXEC_P |		/* Object flags.  */
+   HAS_LINENO | HAS_DEBUG |
+   HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED | BFD_COMPRESS | BFD_DECOMPRESS),
+
+  (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC /* Section flags.  */
+   | SEC_LINK_ONCE | SEC_LINK_DUPLICATES | SEC_READONLY | SEC_DEBUGGING
+   | SEC_CODE | SEC_DATA | SEC_EXCLUDE ),
+
+  TARGET_UNDERSCORE,		/* Leading underscore.  */
+  '/',				/* Ar_pad_char.  */
+  15,				/* Ar_max_namelen.  */
+  0,				/* match priority.  */
+
+  bfd_getl64, bfd_getl_signed_64, bfd_putl64,
+     bfd_getl32, bfd_getl_signed_32, bfd_putl32,
+     bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* Data.  */
+  bfd_getl64, bfd_getl_signed_64, bfd_putl64,
+     bfd_getl32, bfd_getl_signed_32, bfd_putl32,
+     bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* Hdrs.  */
+
+  /* Note that we allow an object file to be treated as a core file as well.  */
+  { _bfd_dummy_target, amd64coff_object_p, /* BFD_check_format.  */
+    bfd_generic_archive_p, amd64coff_object_p },
+  { bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format.  */
+    bfd_false },
+  { bfd_false, coff_write_object_contents, /* bfd_write_contents.  */
+   _bfd_write_archive_contents, bfd_false },
+
+  BFD_JUMP_TABLE_GENERIC (coff),
+  BFD_JUMP_TABLE_COPY (coff),
+  BFD_JUMP_TABLE_CORE (_bfd_nocore),
+  BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
+  BFD_JUMP_TABLE_SYMBOLS (coff),
+  BFD_JUMP_TABLE_RELOCS (coff),
+  BFD_JUMP_TABLE_WRITE (coff),
+  BFD_JUMP_TABLE_LINK (coff),
+  BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
+
+  NULL,
+
+  &bigobj_swap_table
+};