bfd/

	* Makefile.am (BFD32_LIBS): Add compress.lo.
	(BFD32_LIBS_CFILES): Add compress.c.
	(BFD_H_FILES): Likewise.
	* Makefile.in: Regenerate.
	* bfd-in2.h: Regenerate.
	* config.in: Add HAVE_ZLIB_H
	* configure.in: Add test for libz and zlib.h
	* configure: Regenerate.
	* dwarf2.c (read_section): New function.
	(read_indirect_string): Call new function read_section.
	(read_abbrevs): Likewise.
	(decode_line_info): Likewise.
	(read_debug_ranges): Likewise.
	(find_line): Call new function read_section when just one
	.zdebug_info section is found, otherwise read and compress
	multiple sections.
	(_bfd_dwarf2_cleanup_debug_info): Free sec_info_ptr.
	* elf.c (_bfd_elf_make_section_from_shdr): Add zdebug prefix.
	(special_sections_z): New struct.
	(special_sections): Refer to special_sections_z.
	* elfxx-mips.c (_bfd_mips_elf_section_from_shdr): Recognize
	sections named .zdebug_*.
	(_bfd_mips_elf_fake_sections): Likewise.
	* compress.c: New file.
	(bfd_uncompress_section_contents): New function.
bfd/doc/
	* Makefile.am (BFD_H_DEP): Add ../compress.c.
	* Makefile.in: Regenerate.
binutils/
	* config.in: Add HAVE_ZLIB_H
	* configure.in: Add test for libz and zlib.h
	* configure: Regenerate.
	* dwarf.c (debug_displays): Add .zdebug_* strings.
	* dwarf.h (struct dwarf_section): Add fields uncompressed_namd
	and compressed_name.
	* objdump.c (load_debug_section): Call
	bfd_uncompress_section_contents when loading a compressed
	section.
	(dump_dwarf_section): Recognize compressed section name.
	(mach_o_dwarf_sections): Rename as
	mach_o_uncompressed_dwarf_sections.
	(mach_o_compressed_dwarf_sections): New variable.
	(generic_dwarf_section): Rename as
	generic_uncompressed_dwarf_sections.
	(generic_compressed_dwarf_sections): New variable.
	(check_mach_o_dwarf): Save and restore
	mach_o_compressed_dwarf_sections.
	* readelf.c: Add #include for config.h and zlib.h
	(process_section_headers): Recognize compressed section name.
	(uncompress_section_contents): New function.
	(load_debug_section): Call uncompress_section_contents when
	loading a compressed section.
	(display_debug_section): Recognize compressed section name.
binutils/testsuite:
	* binutils-all/objdump.exp: Add test for objdump -s on a file
	with a compressed debug section.  Add test for objdump -W on a
	file that contains a compressed debug section.
	* binutils-all/readelf.exp: Call readelf_compressed_wa_test.
	(readelf_compressed_wa_test): New function.
	* binutils-all/dw2-compressed.S: New file.
	* binutils-all/objdump.W: New file.
	* binutils-all/objdump.s: New file.
	* binutils-all/readelf.wa: New file.

1 files changed, 75 insertions, 11 deletions

diff --git a/binutils/objdump.c b/binutils/objdump.c
index 5894724..c869033 100644
--- a/binutils/objdump.c
+++ b/binutils/objdump.c
@@ -2062,13 +2062,28 @@ load_debug_section (enum dwarf_section_display_enum debug, void *file)
   bfd *abfd = file;
   asection *sec;
   bfd_boolean ret;
+  int section_is_compressed;
 
   /* If it is already loaded, do nothing.  */
   if (section->start != NULL)
     return 1;
 
   /* Locate the debug section.  */
-  sec = bfd_get_section_by_name (abfd, section->name);
+  sec = bfd_get_section_by_name (abfd, section->uncompressed_name);
+  if (sec != NULL)
+    {
+      section->name = section->uncompressed_name;
+      section_is_compressed = 0;
+    }
+  else
+    {
+      sec = bfd_get_section_by_name (abfd, section->compressed_name);
+      if (sec != NULL)
+        {
+          section->name = section->compressed_name;
+          section_is_compressed = 1;
+        }
+    }
   if (sec == NULL)
     return 0;
 
@@ -2097,11 +2112,24 @@ load_debug_section (enum dwarf_section_display_enum debug, void *file)
     ret = bfd_get_section_contents (abfd, sec, section->start, 0,
 				    section->size);
 
-  if (!ret)
+  if (! ret)
     {
       free_debug_section (debug);
       printf (_("\nCan't get contents for section '%s'.\n"),
 	      section->name);
+      return 0;
+    }
+
+  if (section_is_compressed)
+    {
+      bfd_size_type size = section->size;
+      if (! bfd_uncompress_section_contents (&section->start, &size))
+        {
+          free_debug_section (debug);
+          printf (_("\nCan't uncompress section '%s'.\n"), section->name);
+          return 0;
+        }
+      section->size = size;
     }
 
   return ret;
@@ -2135,15 +2163,16 @@ dump_dwarf_section (bfd *abfd, asection *section,
     match = name;
 
   for (i = 0; i < max; i++)
-    if (strcmp (debug_displays[i].section.name, match) == 0)
+    if (strcmp (debug_displays [i].section.uncompressed_name, match) == 0
+        || strcmp (debug_displays [i].section.compressed_name, match) == 0)
       {
-	if (!debug_displays[i].eh_frame)
+	if (!debug_displays [i].eh_frame)
 	  {
 	    struct dwarf_section *sec = &debug_displays [i].section;
 
 	    if (load_debug_section (i, abfd))
 	      {
-		debug_displays[i].display (sec, abfd);
+		debug_displays [i].display (sec, abfd);
 
 		if (i != info && i != abbrev)
 		  free_debug_section (i);
@@ -2153,7 +2182,7 @@ dump_dwarf_section (bfd *abfd, asection *section,
       }
 }
 
-static const char *mach_o_dwarf_sections [] = {
+static const char *mach_o_uncompressed_dwarf_sections [] = {
   "LC_SEGMENT.__DWARFA.__debug_abbrev",		/* .debug_abbrev */
   "LC_SEGMENT.__DWARFA.__debug_aranges",	/* .debug_aranges */
   "LC_SEGMENT.__DWARFA.__debug_frame",		/* .debug_frame */
@@ -2172,7 +2201,27 @@ static const char *mach_o_dwarf_sections [] = {
   "LC_SEGMENT.__DWARFA.__debug_weaknames"	/* .debug_weaknames */
 };
 
-static const char *generic_dwarf_sections [max];
+static const char *mach_o_compressed_dwarf_sections [] = {
+  "LC_SEGMENT.__DWARFA.__zdebug_abbrev",	/* .zdebug_abbrev */
+  "LC_SEGMENT.__DWARFA.__zdebug_aranges",	/* .zdebug_aranges */
+  "LC_SEGMENT.__DWARFA.__zdebug_frame",		/* .zdebug_frame */
+  "LC_SEGMENT.__DWARFA.__zdebug_info",		/* .zdebug_info */
+  "LC_SEGMENT.__DWARFA.__zdebug_line",		/* .zdebug_line */
+  "LC_SEGMENT.__DWARFA.__zdebug_pubnames",	/* .zdebug_pubnames */
+  ".eh_frame",					/* .eh_frame */
+  "LC_SEGMENT.__DWARFA.__zdebug_macinfo",	/* .zdebug_macinfo */
+  "LC_SEGMENT.__DWARFA.__zdebug_str",		/* .zdebug_str */
+  "LC_SEGMENT.__DWARFA.__zdebug_loc",		/* .zdebug_loc */
+  "LC_SEGMENT.__DWARFA.__zdebug_pubtypes",	/* .zdebug_pubtypes */
+  "LC_SEGMENT.__DWARFA.__zdebug_ranges",	/* .zdebug_ranges */
+  "LC_SEGMENT.__DWARFA.__zdebug_static_func",	/* .zdebug_static_func */
+  "LC_SEGMENT.__DWARFA.__zdebug_static_vars",	/* .zdebug_static_vars */
+  "LC_SEGMENT.__DWARFA.__zdebug_types",		/* .zdebug_types */
+  "LC_SEGMENT.__DWARFA.__zdebug_weaknames"	/* .zdebug_weaknames */
+};
+
+static const char *generic_uncompressed_dwarf_sections [max];
+static const char *generic_compressed_dwarf_sections [max];
 
 static void
 check_mach_o_dwarf (bfd *abfd)
@@ -2181,18 +2230,33 @@ check_mach_o_dwarf (bfd *abfd)
   enum bfd_flavour current_flavour = bfd_get_flavour (abfd);
   enum dwarf_section_display_enum i;
 
-  if (generic_dwarf_sections [0] == NULL)
+  if (generic_uncompressed_dwarf_sections [0] == NULL)
     for (i = 0; i < max; i++)
-      generic_dwarf_sections [i] = debug_displays[i].section.name;
+      {
+        generic_uncompressed_dwarf_sections [i]
+            = debug_displays[i].section.uncompressed_name;
+        generic_compressed_dwarf_sections [i]
+            = debug_displays[i].section.compressed_name;
+      }
 
   if (old_flavour != current_flavour)
     {
       if (current_flavour == bfd_target_mach_o_flavour)
 	for (i = 0; i < max; i++)
-	  debug_displays[i].section.name = mach_o_dwarf_sections [i];
+          {
+            debug_displays[i].section.uncompressed_name
+                = mach_o_uncompressed_dwarf_sections [i];
+            debug_displays[i].section.compressed_name
+                = mach_o_compressed_dwarf_sections [i];
+          }
       else if (old_flavour == bfd_target_mach_o_flavour)
 	for (i = 0; i < max; i++)
-	  debug_displays[i].section.name = generic_dwarf_sections [i];
+          {
+            debug_displays[i].section.uncompressed_name
+                = generic_uncompressed_dwarf_sections [i];
+            debug_displays[i].section.compressed_name
+                = generic_compressed_dwarf_sections [i];
+          }
 
       old_flavour = current_flavour;
     }