PowerPC .gnu.attributes

This patch extends Tag_GNU_Power_ABI_FP to cover long double ABIs,
makes the assembler warn about undefined tag values, and removes
similar warnings from the linker.  I think it is better to not
warn in the linker about undefined tag values as future extensions to
the tags then won't result in likely bogus warnings.  This is
consistent with the fact that an older linker won't warn on an
entirely new tag.

include/
	* elf/ppc.h (Tag_GNU_Power_ABI_FP): Comment.
bfd/
	* elf-bfd.h (_bfd_elf_ppc_merge_fp_attributes): Declare.
	* elf32-ppc.c (_bfd_elf_ppc_merge_fp_attributes): New function.
	(ppc_elf_merge_obj_attributes): Use it.  Don't copy first file
	attributes, merge them.  Don't warn about undefined tag bits,
	or copy unknown values to output.
	* elf64-ppc.c (ppc64_elf_merge_private_bfd_data): Call
	_bfd_elf_ppc_merge_fp_attributes.
binutils/
	* readelf.c (display_power_gnu_attribute): Catch truncated section
	for all powerpc attributes.  Display long double ABI.  Don't
	capitalize words, except for names.  Show known bits of tag values
	when some unknown bits are present.  Whitespace fixes.
gas/
	* config/tc-ppc.c (ppc_elf_gnu_attribute): New function.
	(md_pseudo_table <ELF>): Handle "gnu_attribute".
ld/
	* testsuite/ld-powerpc/attr-gnu-4-4.s: Delete.
	* testsuite/ld-powerpc/attr-gnu-4-14.d: Delete.
	* testsuite/ld-powerpc/attr-gnu-4-24.d: Delete.
	* testsuite/ld-powerpc/attr-gnu-4-34.d: Delete.
	* testsuite/ld-powerpc/attr-gnu-4-41.d: Delete.
	* testsuite/ld-powerpc/attr-gnu-4-32.d: Adjust expected warning.
	* testsuite/ld-powerpc/attr-gnu-8-23.d: Likewise.
	* testsuite/ld-powerpc/attr-gnu-4-01.d: Adjust expected output.
	* testsuite/ld-powerpc/attr-gnu-4-02.d: Likewise.
	* testsuite/ld-powerpc/attr-gnu-4-03.d: Likewise.
	* testsuite/ld-powerpc/attr-gnu-4-10.d: Likewise.
	* testsuite/ld-powerpc/attr-gnu-4-11.d: Likewise.
	* testsuite/ld-powerpc/attr-gnu-4-20.d: Likewise.
	* testsuite/ld-powerpc/attr-gnu-4-22.d: Likewise.
	* testsuite/ld-powerpc/attr-gnu-4-33.d: Likewise.
	* testsuite/ld-powerpc/attr-gnu-8-11.d: Likewise.
	* testsuite/ld-powerpc/powerpc.exp: Don't run deleted tests.

18 files changed, 31 insertions, 40 deletions

diff --git a/ld/ChangeLog b/ld/ChangeLog
index 56e6133..3f43b64 100644
--- a/ld/ChangeLog
+++ b/ld/ChangeLog
@@ -1,3 +1,23 @@
+2016-09-26  Alan Modra  <amodra@gmail.com>
+
+	* testsuite/ld-powerpc/attr-gnu-4-4.s: Delete.
+	* testsuite/ld-powerpc/attr-gnu-4-14.d: Delete.
+	* testsuite/ld-powerpc/attr-gnu-4-24.d: Delete.
+	* testsuite/ld-powerpc/attr-gnu-4-34.d: Delete.
+	* testsuite/ld-powerpc/attr-gnu-4-41.d: Delete.
+	* testsuite/ld-powerpc/attr-gnu-4-32.d: Adjust expected warning.
+	* testsuite/ld-powerpc/attr-gnu-8-23.d: Likewise.
+	* testsuite/ld-powerpc/attr-gnu-4-01.d: Adjust expected output.
+	* testsuite/ld-powerpc/attr-gnu-4-02.d: Likewise.
+	* testsuite/ld-powerpc/attr-gnu-4-03.d: Likewise.
+	* testsuite/ld-powerpc/attr-gnu-4-10.d: Likewise.
+	* testsuite/ld-powerpc/attr-gnu-4-11.d: Likewise.
+	* testsuite/ld-powerpc/attr-gnu-4-20.d: Likewise.
+	* testsuite/ld-powerpc/attr-gnu-4-22.d: Likewise.
+	* testsuite/ld-powerpc/attr-gnu-4-33.d: Likewise.
+	* testsuite/ld-powerpc/attr-gnu-8-11.d: Likewise.
+	* testsuite/ld-powerpc/powerpc.exp: Don't run deleted tests.
+
 2016-09-23  Akihiko Odaki  <akihiko.odaki.4i@stu.hosei.ac.jp>
 
 	PR ld/20595
diff --git a/ld/testsuite/ld-powerpc/attr-gnu-4-01.d b/ld/testsuite/ld-powerpc/attr-gnu-4-01.d
index 212e0c4..62dbec0 100644
--- a/ld/testsuite/ld-powerpc/attr-gnu-4-01.d
+++ b/ld/testsuite/ld-powerpc/attr-gnu-4-01.d
@@ -7,4 +7,4 @@
 
 Attribute Section: gnu
 File Attributes
-  Tag_GNU_Power_ABI_FP: Hard float
+  Tag_GNU_Power_ABI_FP: hard float, unspecified long double
diff --git a/ld/testsuite/ld-powerpc/attr-gnu-4-02.d b/ld/testsuite/ld-powerpc/attr-gnu-4-02.d
index 9bd42b5..ae270f1 100644
--- a/ld/testsuite/ld-powerpc/attr-gnu-4-02.d
+++ b/ld/testsuite/ld-powerpc/attr-gnu-4-02.d
@@ -7,4 +7,4 @@
 
 Attribute Section: gnu
 File Attributes
-  Tag_GNU_Power_ABI_FP: Soft float
+  Tag_GNU_Power_ABI_FP: soft float, unspecified long double
diff --git a/ld/testsuite/ld-powerpc/attr-gnu-4-03.d b/ld/testsuite/ld-powerpc/attr-gnu-4-03.d
index 03b0c3c..d79febf 100644
--- a/ld/testsuite/ld-powerpc/attr-gnu-4-03.d
+++ b/ld/testsuite/ld-powerpc/attr-gnu-4-03.d
@@ -7,4 +7,4 @@
 
 Attribute Section: gnu
 File Attributes
-  Tag_GNU_Power_ABI_FP: Single-precision hard float
+  Tag_GNU_Power_ABI_FP: single-precision hard float, unspecified long double
diff --git a/ld/testsuite/ld-powerpc/attr-gnu-4-10.d b/ld/testsuite/ld-powerpc/attr-gnu-4-10.d
index 93297c2..1e01549 100644
--- a/ld/testsuite/ld-powerpc/attr-gnu-4-10.d
+++ b/ld/testsuite/ld-powerpc/attr-gnu-4-10.d
@@ -7,4 +7,4 @@
 
 Attribute Section: gnu
 File Attributes
-  Tag_GNU_Power_ABI_FP: Hard float
+  Tag_GNU_Power_ABI_FP: hard float, unspecified long double
diff --git a/ld/testsuite/ld-powerpc/attr-gnu-4-11.d b/ld/testsuite/ld-powerpc/attr-gnu-4-11.d
index fb2b76e..5027b78 100644
--- a/ld/testsuite/ld-powerpc/attr-gnu-4-11.d
+++ b/ld/testsuite/ld-powerpc/attr-gnu-4-11.d
@@ -7,4 +7,4 @@
 
 Attribute Section: gnu
 File Attributes
-  Tag_GNU_Power_ABI_FP: Hard float
+  Tag_GNU_Power_ABI_FP: hard float, unspecified long double
diff --git a/ld/testsuite/ld-powerpc/attr-gnu-4-14.d b/ld/testsuite/ld-powerpc/attr-gnu-4-14.d
deleted file mode 100644
index 3bb6661..0000000
--- a/ld/testsuite/ld-powerpc/attr-gnu-4-14.d
+++ /dev/null
@@ -1,6 +0,0 @@
-#source: attr-gnu-4-1.s
-#source: attr-gnu-4-4.s
-#as: -a32
-#ld: -r -melf32ppc
-#warning: Warning: .* uses unknown floating point ABI 4
-#target: powerpc*-*-*
diff --git a/ld/testsuite/ld-powerpc/attr-gnu-4-20.d b/ld/testsuite/ld-powerpc/attr-gnu-4-20.d
index 3d83893..fca9de6 100644
--- a/ld/testsuite/ld-powerpc/attr-gnu-4-20.d
+++ b/ld/testsuite/ld-powerpc/attr-gnu-4-20.d
@@ -7,4 +7,4 @@
 
 Attribute Section: gnu
 File Attributes
-  Tag_GNU_Power_ABI_FP: Soft float
+  Tag_GNU_Power_ABI_FP: soft float, unspecified long double
diff --git a/ld/testsuite/ld-powerpc/attr-gnu-4-22.d b/ld/testsuite/ld-powerpc/attr-gnu-4-22.d
index f6bd198..80a209c 100644
--- a/ld/testsuite/ld-powerpc/attr-gnu-4-22.d
+++ b/ld/testsuite/ld-powerpc/attr-gnu-4-22.d
@@ -7,4 +7,4 @@
 
 Attribute Section: gnu
 File Attributes
-  Tag_GNU_Power_ABI_FP: Soft float
+  Tag_GNU_Power_ABI_FP: soft float, unspecified long double
diff --git a/ld/testsuite/ld-powerpc/attr-gnu-4-24.d b/ld/testsuite/ld-powerpc/attr-gnu-4-24.d
deleted file mode 100644
index fc17f91..0000000
--- a/ld/testsuite/ld-powerpc/attr-gnu-4-24.d
+++ /dev/null
@@ -1,6 +0,0 @@
-#source: attr-gnu-4-2.s
-#source: attr-gnu-4-4.s
-#as: -a32
-#ld: -r -melf32ppc
-#warning: Warning: .* uses unknown floating point ABI 4
-#target: powerpc*-*-*
diff --git a/ld/testsuite/ld-powerpc/attr-gnu-4-32.d b/ld/testsuite/ld-powerpc/attr-gnu-4-32.d
index 3b7cb29..924a3af 100644
--- a/ld/testsuite/ld-powerpc/attr-gnu-4-32.d
+++ b/ld/testsuite/ld-powerpc/attr-gnu-4-32.d
@@ -2,5 +2,5 @@
 #source: attr-gnu-4-2.s
 #as: -a32
 #ld: -r -melf32ppc
-#warning: Warning: .* uses soft float, .* uses single-precision hard float
+#warning: Warning: .* uses hard float, .* uses soft float
 #target: powerpc*-*-*
diff --git a/ld/testsuite/ld-powerpc/attr-gnu-4-33.d b/ld/testsuite/ld-powerpc/attr-gnu-4-33.d
index 88367ae..6951b42 100644
--- a/ld/testsuite/ld-powerpc/attr-gnu-4-33.d
+++ b/ld/testsuite/ld-powerpc/attr-gnu-4-33.d
@@ -7,4 +7,4 @@
 
 Attribute Section: gnu
 File Attributes
-  Tag_GNU_Power_ABI_FP: Single-precision hard float
+  Tag_GNU_Power_ABI_FP: single-precision hard float, unspecified long double
diff --git a/ld/testsuite/ld-powerpc/attr-gnu-4-34.d b/ld/testsuite/ld-powerpc/attr-gnu-4-34.d
deleted file mode 100644
index 6f6e1fe..0000000
--- a/ld/testsuite/ld-powerpc/attr-gnu-4-34.d
+++ /dev/null
@@ -1,6 +0,0 @@
-#source: attr-gnu-4-3.s
-#source: attr-gnu-4-4.s
-#as: -a32
-#ld: -r -melf32ppc
-#warning: Warning: .* uses unknown floating point ABI 4
-#target: powerpc*-*-*
diff --git a/ld/testsuite/ld-powerpc/attr-gnu-4-4.s b/ld/testsuite/ld-powerpc/attr-gnu-4-4.s
deleted file mode 100644
index 3ff129a..0000000
--- a/ld/testsuite/ld-powerpc/attr-gnu-4-4.s
+++ /dev/null
@@ -1 +0,0 @@
-.gnu_attribute 4,4
diff --git a/ld/testsuite/ld-powerpc/attr-gnu-4-41.d b/ld/testsuite/ld-powerpc/attr-gnu-4-41.d
deleted file mode 100644
index b909476..0000000
--- a/ld/testsuite/ld-powerpc/attr-gnu-4-41.d
+++ /dev/null
@@ -1,6 +0,0 @@
-#source: attr-gnu-4-4.s
-#source: attr-gnu-4-1.s
-#as: -a32
-#ld: -r -melf32ppc
-#warning: Warning: .* uses unknown floating point ABI 4
-#target: powerpc*-*-*
diff --git a/ld/testsuite/ld-powerpc/attr-gnu-8-11.d b/ld/testsuite/ld-powerpc/attr-gnu-8-11.d
index 7e49d4a..06d7e88 100644
--- a/ld/testsuite/ld-powerpc/attr-gnu-8-11.d
+++ b/ld/testsuite/ld-powerpc/attr-gnu-8-11.d
@@ -7,4 +7,4 @@
 
 Attribute Section: gnu
 File Attributes
-  Tag_GNU_Power_ABI_Vector: Generic
+  Tag_GNU_Power_ABI_Vector: generic
diff --git a/ld/testsuite/ld-powerpc/attr-gnu-8-23.d b/ld/testsuite/ld-powerpc/attr-gnu-8-23.d
index b22e4bd..b442884 100644
--- a/ld/testsuite/ld-powerpc/attr-gnu-8-23.d
+++ b/ld/testsuite/ld-powerpc/attr-gnu-8-23.d
@@ -2,5 +2,5 @@
 #source: attr-gnu-8-3.s
 #as: -a32
 #ld: -r -melf32ppc
-#warning: Warning: .* uses vector ABI "SPE", .* uses "AltiVec"
+#warning: Warning: .* uses AltiVec vector ABI, .* uses SPE vector ABI
 #target: powerpc*-*-*
diff --git a/ld/testsuite/ld-powerpc/powerpc.exp b/ld/testsuite/ld-powerpc/powerpc.exp
index 37e53fd..07226c6 100644
--- a/ld/testsuite/ld-powerpc/powerpc.exp
+++ b/ld/testsuite/ld-powerpc/powerpc.exp
@@ -319,17 +319,13 @@ run_dump_test "attr-gnu-4-10"
 run_dump_test "attr-gnu-4-11"
 run_dump_test "attr-gnu-4-12"
 run_dump_test "attr-gnu-4-13"
-run_dump_test "attr-gnu-4-14"
 run_dump_test "attr-gnu-4-20"
 run_dump_test "attr-gnu-4-21"
 run_dump_test "attr-gnu-4-22"
 run_dump_test "attr-gnu-4-23"
-run_dump_test "attr-gnu-4-24"
 run_dump_test "attr-gnu-4-31"
 run_dump_test "attr-gnu-4-32"
 run_dump_test "attr-gnu-4-33"
-run_dump_test "attr-gnu-4-34"
-run_dump_test "attr-gnu-4-41"
 
 run_dump_test "attr-gnu-8-11"
 run_dump_test "attr-gnu-8-23"