Tue Jan 9 15:22:53 1996 David Mosberger-Tang <davidm@azstarnet.com>

	* coff-alpha.c (alpha_relocate_section): During final link, allow
 	output .lita section to be bigger than 64k by adjusting gp value
 	on a per-input section basis.
	* libecoff.h (struct ecoff_tdata): Add issued_multiple_gp_warning
	field.
	(struct ecoff_section_tdata): Add gp field.

Tue Jan  9 12:00:36 1996  Ian Lance Taylor  <ian@cygnus.com>

	Handle Alpha ECOFF changes in OSF/1 3.2.
	* libecoff.h (struct ecoff_backend_data): Add get_elt_at_filepos
	field.
	* coff-alpha.c: Include "aout/ar.h".
	(alpha_ecoff_get_relocated_section_contents): Don't require an
	ALPHA_R_IGNORE reloc after an ALPHA_R_GPDISP reloc, since OSF/1
	3.2 doesn't generate one.
	(alpha_relocate_section): Likewise.
	(alpha_ecoff_slurp_armap): Define.
	(alpha_ecoff_slurp_extended_name_table): Define.
	(alpha_ecoff_construct_extended_name_table): Define.
	(alpha_ecoff_truncate_arname): Define.
	(alpha_ecoff_write_armap): Define.
	(alpha_ecoff_generic_stat_arch_elt): Define.
	(alpha_ecoff_update_armap_timestamp): Define.
	(ARFZMAG): Define.
	(alpha_ecoff_read_ar_hdr): New static function.
	(alpha_ecoff_get_elt_at_filepos): New static function.
	(alpha_ecoff_openr_next_archived_file): New static function.
	(alpha_ecoff_get_elt_at_index): New static function.
	(alpha_ecoff_backend_data): Initialize get_elt_at_filepos field.
	(ecoffalpha_little_vec): Change BFD_JUMP_TABLE_ARCHIVE from
	_bfd_ecoff to alpha_ecoff.
	* ecoff.c (ecoff_link_add_archive_symbols): Use get_elt_at_filepos
	field from backend structure, rather than always calling
	_bfd_get_elt_at_filepos.
	* coff-mips.c (mips_ecoff_backend_data): Initialize
	get_elt_at_filepos field.
	* archive.c (_bfd_generic_read_ar_hdr_mag): New function, copied
	from _bfd_generic_read_ar_hdr with minor changes.
	(_bfd_generic_read_ar_hdr): Use _bfd_generic_read_ar_hdr_mag.
	* libbfd-in.h (_bfd_generic_read_ar_hdr_mag): Declare.
	* libbfd.h: Rebuild.

	* bfd-in.h (BFD_IN_MEMORY): Define.
	* libbfd-in.h (struct bfd_in_memory): Define.
	* libbfd.c (bfd_read): Handle BFD_IN_MEMORY flag.
	(bfd_get_file_window): Don't try to map a BFD_IN_MEMORY file.
	(bfd_write, bfd_stat): Abort if BFD_IN_MEMORY is set.
	(bfd_tell, bfd_flush, bfd_seek): Handle BFD_IN_MEMORY flag.
	* bfd.c (struct _bfd): Change iostream field from char * to PTR.
	(bfd_get_size): Handle BFD_IN_MEMORY flag.
	* cache.c (bfd_cache_close): Ignore BFD_IN_MEMORY files.
	(bfd_open_file): Cast to PTR, not char *, when setting iostream.
	(bfd_cache_lookup_worker): Abort if BFD_IN_MEMORY is set.
	* opncls.c (bfd_fdopenr): Cast to PTR, not char *, when setting
	iostream.
	(bfd_openstreamr): Likewise.
	* aoutx.h (NAME(aout,some_aout_object_p)): Only fstat iostream if
	BFD_IN_MEMORY is not set.
	* riscix.c (riscix_some_aout_object_p): Likewise.
	* bfd-in2.h, libbfd.h: Rebuild.

	* targets.c (bfd_target): Add _bfd_get_elt_at_index field.
	(BFD_JUMP_TABLE_ARCHIVE): Add _get_elt_at_index.
	(bfd_get_elt_at_index): Define.
	* archive.c (_bfd_generic_get_elt_at_index): Rename from
	bfd_get_elt_at_index.  Change index parameter from int to
	symindex.
	* libbfd-in.h (_bfd_generic_get_elt_at_index): Declare.
	(_bfd_noarchive_get_elt_at_index): Define.
	(_bfd_archive_bsd_get_elt_at_index): Define.
	(_bfd_archive_coff_get_elt_at_index): Define.
	* bfd-in2.h, libbfd.h: Rebuild.
	* aout-target.h (MY_get_elt_at_index): Define if not defined.
	* coff-rs6000.c (xcoff_get_elt_at_index): Define.
	* ieee.c (ieee_get_elt_at_index): Define.
	* libecoff.h (_bfd_ecoff_get_elt_at_index): Define.
	* oasys.c (oasys_get_elt_at_index): Define.
	* som.c (som_get_elt_at_index): Define.

1 files changed, 17 insertions, 0 deletions

diff --git a/bfd/libecoff.h b/bfd/libecoff.h
index e8af957..939e813 100644
--- a/bfd/libecoff.h
+++ b/bfd/libecoff.h
@@ -71,6 +71,9 @@ struct ecoff_backend_data
   /* Do final adjustments to filehdr and aouthdr.  */
   boolean (*adjust_headers) PARAMS ((bfd *, struct internal_filehdr *,
 				     struct internal_aouthdr *));
+  /* Read an element from an archive at a given file position.  This
+     is needed because OSF/1 3.2 uses a weird archive format.  */
+  bfd *(*get_elt_at_filepos) PARAMS ((bfd *, file_ptr));
 };
 
 /* This is the target specific information kept for ECOFF files.  */
@@ -127,6 +130,10 @@ typedef struct ecoff_tdata
   /* True if this BFD was written by the backend linker.  */
   boolean linker;
 
+  /* True if a warning that multiple global pointer values are
+     needed in the output binary was issued already.  */
+  boolean issued_multiple_gp_warning;
+
   /* Used by find_nearest_line entry point.  The structure could be
      included directly in this one, but there's no point to wasting
      the memory just for the infrequently called find_nearest_line.  */
@@ -197,6 +204,14 @@ struct ecoff_section_tdata
      section, and the entry for any reloc that is not PC relative is
      zero.  */
   long *offsets;
+
+  /* When producing an executable (i.e., final, non-relocatable link)
+     on the Alpha, we may need to use multiple global pointer values
+     to span the entire .lita section.  In essence, we allow each
+     input .lita section to have its own gp value.  To support this,
+     we need to keep track of the gp values that we picked for each
+     input .lita section . */
+  bfd_vma gp;
 };
 
 /* An accessor macro for the ecoff_section_tdata structure.  */
@@ -269,8 +284,10 @@ extern boolean _bfd_ecoff_slurp_armap PARAMS ((bfd *abfd));
 #define _bfd_ecoff_truncate_arname bfd_dont_truncate_arname
 extern boolean _bfd_ecoff_write_armap
   PARAMS ((bfd *, unsigned int, struct orl *, unsigned int, int));
+#define _bfd_ecoff_read_ar_hdr _bfd_generic_read_ar_hdr
 #define _bfd_ecoff_openr_next_archived_file \
   bfd_generic_openr_next_archived_file
+#define _bfd_ecoff_get_elt_at_index _bfd_generic_get_elt_at_index
 #define _bfd_ecoff_generic_stat_arch_elt bfd_generic_stat_arch_elt
 #define _bfd_ecoff_update_armap_timestamp bfd_true