Make default compression gABI compliant

All programs in binutils+gdb git repo now support gABI compression
with the SHF_COMPRESSED bit.  This patch makes the zlib-gabi option
as compression default for gas, gold, ld and objcopy, instead of the
zlib-gnu option whose outputs are incompatible with gABI.

binutils/

	* objcopy.c (copy_file): Set BFD_COMPRESS_GABI if not
	zlib-gnu.
	* doc/binutils.texi: Change --compress-debug-sections and
	--compress-debug-sections=zlib to zlib-gabi.

binutils/testsuite/

	* binutils-all/compress.exp: Update.

gas/

	* as.c (parse_args): Make --compress-debug-sections and
	--compress-debug-sections=zlib the same as
	--compress-debug-sections=zlib-gabi.
	* doc/as.texinfo: Change --compress-debug-sections and
	--compress-debug-sections=zlib to zlib-gabi.

gold/

	* compressed_output.cc (Output_compressed_section::set_final_data_size):
	Make --compress-debug-sections=zlib the same as
	--compress-debug-sections=zlib-gabi.
	* testsuite/Makefile.am (flagstest_compress_debug_sections.check):
	Expect ".debug_.*" with the SHF_COMPRESSED bit, instead of
	".zdebug_".
	* testsuite/Makefile.in: Regenerated.

ld/

	* emultempl/elf32.em (gld${EMULATION_NAME}_handle_option): Make
	--compress-debug-sections=zlib the same as
	--compress-debug-sections=zlib-gabi.
	* ld.texinfo: Change --compress-debug-sections=zlib to zlib-gabi.

ld/testsuite/

	* ld-elf/zlibbegin.rS: Updated to .debug_.* with the
	SHF_COMPRESSED bit.
	* ld-elf/zlibnormal.rS: Likewise.

6 files changed, 21 insertions, 7 deletions

diff --git a/ld/ChangeLog b/ld/ChangeLog
index 3035fd7..3dd0a6f 100644
--- a/ld/ChangeLog
+++ b/ld/ChangeLog
@@ -1,3 +1,10 @@
+2015-07-14  H.J. Lu  <hongjiu.lu@intel.com>
+
+	* emultempl/elf32.em (gld${EMULATION_NAME}_handle_option): Make
+	--compress-debug-sections=zlib the same as
+	--compress-debug-sections=zlib-gabi.
+	* ld.texinfo: Change --compress-debug-sections=zlib to zlib-gabi.
+
 2015-07-14  Nick Clifton  <nickc@redhat.com>
 
 	* ld.texinfo (Options): Add missing period after @xref.
diff --git a/ld/emultempl/elf32.em b/ld/emultempl/elf32.em
index 14f7963..8a41347 100644
--- a/ld/emultempl/elf32.em
+++ b/ld/emultempl/elf32.em
@@ -2223,7 +2223,7 @@ gld${EMULATION_NAME}_handle_option (int optc)
       if (strcasecmp (optarg, "none") == 0)
 	link_info.compress_debug = COMPRESS_DEBUG_NONE;
       else if (strcasecmp (optarg, "zlib") == 0)
-	link_info.compress_debug = COMPRESS_DEBUG_GNU_ZLIB;
+	link_info.compress_debug = COMPRESS_DEBUG_GABI_ZLIB;
       else if (strcasecmp (optarg, "zlib-gnu") == 0)
 	link_info.compress_debug = COMPRESS_DEBUG_GNU_ZLIB;
       else if (strcasecmp (optarg, "zlib-gabi") == 0)
diff --git a/ld/ld.texinfo b/ld/ld.texinfo
index e7989b7..b48396d 100644
--- a/ld/ld.texinfo
+++ b/ld/ld.texinfo
@@ -2228,11 +2228,12 @@ hash tables.  The default is @code{sysv}.
 @itemx --compress-debug-sections=zlib-gabi
 On ELF platforms , these options control how DWARF debug sections are
 compressed using zlib.  @option{--compress-debug-sections=none} doesn't
-compress DWARF debug sections.  @option{--compress-debug-sections=zlib}
-and @option{--compress-debug-sections=zlib-gnu} compress DWARF debug
+compress DWARF debug sections.
+@option{--compress-debug-sections=zlib-gnu} compresses DWARF debug
 sections and rename debug section names to begin with @samp{.zdebug}
-instead of @samp{.debug}.  @option{--compress-debug-sections=zlib-gabi}
-compresses DWARF debug sections with SHF_COMPRESSED from the ELF ABI.
+instead of @samp{.debug}.  @option{--compress-debug-sections=zlib}
+and @option{--compress-debug-sections=zlib-gabi}
+compress DWARF debug sections with SHF_COMPRESSED from the ELF ABI.
 
 @kindex --reduce-memory-overheads
 @item --reduce-memory-overheads
diff --git a/ld/testsuite/ChangeLog b/ld/testsuite/ChangeLog
index 410359c..c279cbd 100644
--- a/ld/testsuite/ChangeLog
+++ b/ld/testsuite/ChangeLog
@@ -1,3 +1,9 @@
+2015-07-14  H.J. Lu  <hongjiu.lu@intel.com>
+
+	* ld-elf/zlibbegin.rS: Updated to .debug_.* with the
+	SHF_COMPRESSED bit.
+	* ld-elf/zlibnormal.rS: Likewise.
+
 2015-07-09  Catherine Moore  <clm@codesourcery.com>
 
         * ld-mips-elf/attr-gnu-4-08.d: Update expected output.
diff --git a/ld/testsuite/ld-elf/zlibbegin.rS b/ld/testsuite/ld-elf/zlibbegin.rS
index 54de24c..294fdb4 100644
--- a/ld/testsuite/ld-elf/zlibbegin.rS
+++ b/ld/testsuite/ld-elf/zlibbegin.rS
@@ -1,3 +1,3 @@
 #...
- +\[[ 0-9]+\] .zdebug_.* +(PROGBITS|MIPS_DWARF) +0+ +[0-9a-f]+ +[0-9a-f]+ [0-9a-f]+ +0 +0 +1
+ +\[[ 0-9]+\] .debug_.* +(PROGBITS|MIPS_DWARF) +0+ +[0-9a-f]+ +[0-9a-f]+ [0-9a-f]+ +C +0 +0 +1
 #pass
diff --git a/ld/testsuite/ld-elf/zlibnormal.rS b/ld/testsuite/ld-elf/zlibnormal.rS
index 54de24c..294fdb4 100644
--- a/ld/testsuite/ld-elf/zlibnormal.rS
+++ b/ld/testsuite/ld-elf/zlibnormal.rS
@@ -1,3 +1,3 @@
 #...
- +\[[ 0-9]+\] .zdebug_.* +(PROGBITS|MIPS_DWARF) +0+ +[0-9a-f]+ +[0-9a-f]+ [0-9a-f]+ +0 +0 +1
+ +\[[ 0-9]+\] .debug_.* +(PROGBITS|MIPS_DWARF) +0+ +[0-9a-f]+ +[0-9a-f]+ [0-9a-f]+ +C +0 +0 +1
 #pass