Properly check --compress-debug-sections=XXX

We can't check if input is ELF in copy_file since some targets may only
set xvec after bfd_check_format_matches is called.  This patch moves
this check to copy_object.

bfd/

	* elfxx-target.h (TARGET_BIG_SYM): Add BFD_COMPRESS_GABI to
	object_flags.
	(TARGET_LITTLE_SYM): Likewise.

binutils/

	* objcopy.c (do_debug_sections): Use bit patterns.
	(copy_object): Return FALSE for compress_zlib, compress_gnu_zlib
	and compress_gabi_zlib on non-ELF input.
	(copy_file): Don't check non-ELF input here.

bfd/ChangeLog

@@ -1,3 +1,9 @@
+2015-04-09  H.J. Lu  <hongjiu.lu@intel.com>
+
+	* elfxx-target.h (TARGET_BIG_SYM): Add BFD_COMPRESS_GABI to
+	object_flags.
+	(TARGET_LITTLE_SYM): Likewise.
+
 2015-04-09  Max Filippov  <jcmvbkbc@gmail.com>
 
 	* elf32-xtensa.c (splay-tree.h): include header.

bfd/elfxx-target.h

@@ -835,7 +835,8 @@ const bfd_target TARGET_BIG_SYM =
 
   /* object_flags: mask of all file flags */
   (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS
-   | DYNAMIC | WP_TEXT | D_PAGED | BFD_COMPRESS | BFD_DECOMPRESS),
+   | DYNAMIC | WP_TEXT | D_PAGED | BFD_COMPRESS | BFD_DECOMPRESS
+   | BFD_COMPRESS_GABI),
 
   /* section_flags: mask of all section flags */
   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY
@@ -933,7 +934,8 @@ const bfd_target TARGET_LITTLE_SYM =
 
   /* object_flags: mask of all file flags */
   (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS
-   | DYNAMIC | WP_TEXT | D_PAGED | BFD_COMPRESS | BFD_DECOMPRESS),
+   | DYNAMIC | WP_TEXT | D_PAGED | BFD_COMPRESS | BFD_DECOMPRESS
+   | BFD_COMPRESS_GABI),
 
   /* section_flags: mask of all section flags */
   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY

binutils/ChangeLog

@@ -1,3 +1,10 @@
+2015-04-09  H.J. Lu  <hongjiu.lu@intel.com>
+
+	* objcopy.c (do_debug_sections): Use bit patterns.
+	(copy_object): Return FALSE for compress_zlib, compress_gnu_zlib
+	and compress_gabi_zlib on non-ELF input.
+	(copy_file): Don't check non-ELF input here.
+
 2015-04-09  Nick Clifton  <nickc@redhat.com>
 
 	* readelf.c (get_machine_flags): Report the setting of the string

binutils/objcopy.c

@@ -202,12 +202,12 @@ static bfd_boolean convert_debugging = FALSE;
 /* Whether to compress/decompress DWARF debug sections.  */
 static enum
 {
-  nothing,
-  compress,
-  compress_zlib,
-  compress_gnu_zlib,
-  compress_gabi_zlib,
-  decompress
+  nothing = 0,
+  compress = 1 << 0,
+  compress_zlib = compress | 1 << 1,
+  compress_gnu_zlib = compress | 1 << 2,
+  compress_gabi_zlib = compress | 1 << 3,
+  decompress = 1 << 4
 } do_debug_sections = nothing;
 
 /* Whether to change the leading character in symbol names.  */
@@ -1664,6 +1664,15 @@ copy_object (bfd *ibfd, bfd *obfd, const bfd_arch_info_type *input_arch)
       return FALSE;
     }
 
+  if ((do_debug_sections & compress) != 0
+      && do_debug_sections != compress
+      && ibfd->xvec->flavour != bfd_target_elf_flavour)
+    {
+      non_fatal (_("--compress-debug-sections=[zlib|zlib-gnu|zlib-gabi] is unsupported on `%s'"),
+		 bfd_get_archive_filename (ibfd));
+      return FALSE;
+    }
+
   if (verbose)
     printf (_("copy from `%s' [%s] to `%s' [%s]\n"),
 	    bfd_get_archive_filename (ibfd), bfd_get_target (ibfd),
@@ -2596,14 +2605,10 @@ copy_file (const char *input_filename, const char *output_filename,
     case compress_gnu_zlib:
     case compress_gabi_zlib:
       ibfd->flags |= BFD_COMPRESS;
-      if (do_debug_sections != compress)
-	{
-	  if (ibfd->xvec->flavour != bfd_target_elf_flavour)
-	    fatal (_("--compress-debug-sections=[zlib|zlib-gnu|zlib-gabi] is unsupported for `%s'"),
-		   bfd_get_target (ibfd));
-	  if (do_debug_sections == compress_gabi_zlib)
-	    ibfd->flags |= BFD_COMPRESS_GABI;
-	}
+      /* Don't check if input is ELF here since this information is
+	 only available after bfd_check_format_matches is called.  */
+      if (do_debug_sections == compress_gabi_zlib)
+	ibfd->flags |= BFD_COMPRESS_GABI;
       break;
     case decompress:
       ibfd->flags |= BFD_DECOMPRESS;