Add support for displaying and merging GNU_BUILD_NOTEs.

include	* elf/common.h (SHF_GNU_BUILD_NOTE): Define.
	(NT_GNU_PROPERTY_TYPE_0): Define.
	(NT_GNU_BUILD_ATTRIBUTE_OPEN): Define.
	(NT_GNU_BUILD_ATTRIBUTE_FUN): Define.
	(GNU_BUILD_ATTRIBUTE_TYPE_NUMERIC): Define.
	(GNU_BUILD_ATTRIBUTE_TYPE_STRING): Define.
	(GNU_BUILD_ATTRIBUTE_TYPE_BOOL_TRUE): Define.
	(GNU_BUILD_ATTRIBUTE_TYPE_BOOL_FALSE): Define.
	(GNU_BUILD_ATTRIBUTE_VERSION): Define.
	(GNU_BUILD_ATTRIBUTE_STACK_PROT): Define.
	(GNU_BUILD_ATTRIBUTE_RELRO): Define.
	(GNU_BUILD_ATTRIBUTE_STACK_SIZE): Define.
	(GNU_BUILD_ATTRIBUTE_TOOL): Define.
	(GNU_BUILD_ATTRIBUTE_ABI): Define.
	(GNU_BUILD_ATTRIBUTE_PIC): Define.
	(NOTE_GNU_PROPERTY_SECTION_NAME): Define.
	(GNU_BUILD_ATTRS_SECTION_NAME): Define.
	(GNU_PROPERTY_STACK_SIZE): Define.
	(GNU_PROPERTY_NO_COPY_ON_PROTECTED): Define.
	(GNU_PROPERTY_X86_ISA_1_USED): Define.
	(GNU_PROPERTY_X86_ISA_1_NEEDED): Define.
	(GNU_PROPERTY_X86_ISA_1_486): Define.
	(GNU_PROPERTY_X86_ISA_1_586): Define.
	(GNU_PROPERTY_X86_ISA_1_686): Define.
	(GNU_PROPERTY_X86_ISA_1_SSE): Define.
	(GNU_PROPERTY_X86_ISA_1_SSE2): Define.
	(GNU_PROPERTY_X86_ISA_1_SSE3): Define.
	(GNU_PROPERTY_X86_ISA_1_SSSE3): Define.
	(GNU_PROPERTY_X86_ISA_1_SSE4_1): Define.
	(GNU_PROPERTY_X86_ISA_1_SSE4_2): Define.
	(GNU_PROPERTY_X86_ISA_1_AVX): Define.
	(GNU_PROPERTY_X86_ISA_1_AVX2): Define.
	(GNU_PROPERTY_X86_ISA_1_AVX512F): Define.
	(GNU_PROPERTY_X86_ISA_1_AVX512CD): Define.
	(GNU_PROPERTY_X86_ISA_1_AVX512ER): Define.
	(GNU_PROPERTY_X86_ISA_1_AVX512PF): Define.
	(GNU_PROPERTY_X86_ISA_1_AVX512VL): Define.
	(GNU_PROPERTY_X86_ISA_1_AVX512DQ): Define.
	(GNU_PROPERTY_X86_ISA_1_AVX512BW): Define.

binutils* readelf.c (get_note_type): Add support for GNU_BUILD_NOTEs.
	(get_gnu_elf_note_type): Add support for GNU_PROPERTY_NOTEs.
	(decode_x86_isa): New function.
	(print_gnu_property_note): New function.
	(print_gnu_note): Handle GNU_PROPERTY_NOTEs.
	(print_gnu_build_attribute_description): New function.
	(print_gnu_build_attribute_name): New function.
	(process_note): Add support for GNU_BUILD_NOTEs.
	* objcopy.c (--merge-notes): New command line option.
	(copy_options): Add merge-notes.
	(copy_usage): Likewise.
	(is_merge_note_section): New function.
	(merge_gnu_build_notes): New function.
	(copy_object): Merge note sections if asked to do so.
	(skip_section): Add skip_copy parameter.  Add support for skipping
	merged note sections.
	(copy_relocations_in_section): Update call to skip_section.
	(copy_section): Likewise.
	(copy_main): Add support for merge-notes option.
	* doc/binutils.texi: Document the new option to objcopy.
	* NEWS: Mention the new feature.
	* testsuite/binutils-all/note-2-32.d: New test.  Checks note
	merging on 32-bit targets.
	* testsuite/binutils-all/note-2-32.s: New test source file.
	* testsuite/binutils-all/note-2-64.d: New test.  Like note-2-32.d
	but for 64-bit targets.
	* testsuite/binutils-all/note-2-64.s: New test source file.
	* testsuite/binutils-all/objcopy.exp: Run the new test.

5 files changed, 226 insertions, 0 deletions

diff --git a/binutils/testsuite/binutils-all/note-2-32.d b/binutils/testsuite/binutils-all/note-2-32.d
new file mode 100644
index 0000000000..0c0974c0bc
--- /dev/null
+++ b/binutils/testsuite/binutils-all/note-2-32.d
@@ -0,0 +1,17 @@
+#PROG: objcopy
+#readelf: --notes --wide
+#objcopy: --merge-notes
+#name: merge notes section (32-bits)
+#source: note-2-32.s
+
+#...
+  Owner                 Data size	Description
+[ 	]+\$<version>1[ 	]+0x00000004[ 	]+NT_GNU_BUILD_ATTRIBUTE_OPEN[ 	]+Applies from offset 0x100 \(file: note1.s\)
+[ 	]+\$<tool>gcc 7.0.1[ 	]+0x00000000[ 	]+NT_GNU_BUILD_ATTRIBUTE_OPEN[ 	]+Applies from offset 0x100
+[ 	]+\+<stack prot>true[ 	]+0x00000000[ 	]+NT_GNU_BUILD_ATTRIBUTE_OPEN[ 	]+Applies from offset 0x100
+[ 	]+\*<PIC>static[ 	]+0x00000000[ 	]+NT_GNU_BUILD_ATTRIBUTE_OPEN[ 	]+Applies from offset 0x100
+[ 	]+\*<ABI>0x0[ 	]+0x00000000[ 	]+NT_GNU_BUILD_ATTRIBUTE_OPEN[ 	]+Applies from offset 0x100
+[ 	]+\$<version>1[ 	]+0x00000004[ 	]+NT_GNU_BUILD_ATTRIBUTE_OPEN[ 	]+Applies from offset 0x10. \(file: note2.s\)
+[ 	]+!<stack prot>false[ 	]+0x00000000[ 	]+NT_GNU_BUILD_ATTRIBUTE_OPEN[ 	]+Applies from offset 0x10.
+[ 	]+\*<PIC>pic[ 	]+0x00000000[ 	]+NT_GNU_BUILD_ATTRIBUTE_FUNC[ 	]+Applies from offset 0x10.
+#...
diff --git a/binutils/testsuite/binutils-all/note-2-32.s b/binutils/testsuite/binutils-all/note-2-32.s
new file mode 100644
index 0000000000..8d9f53a3a0
--- /dev/null
+++ b/binutils/testsuite/binutils-all/note-2-32.s
@@ -0,0 +1,93 @@
+	.text
+	.org 0x100
+	.global note1.s
+note1.s:
+	.word 0
+	
+	.pushsection .gnu.build.attributes, "0x100000", %note
+	.balign 4
+	.dc.l 4
+	.dc.l 4
+	.dc.l 0x100
+	.asciz "$
1"
+	.dc.l note1.s
+
+	.dc.l 12
+	.dc.l 0
+	.dc.l 0x100
+	.asciz "$gcc 7.0.1"
+
+	.dc.l 2
+	.dc.l 0
+	.dc.l 0x100
+	.dc.b 0x2b, 0x2
+	.dc.b  0, 0
+
+	.dc.l 3
+	.dc.l 0
+	.dc.l 0x100
+	.dc.b 0x2a, 0x7, 0
+	.dc.b  0
+
+	.dc.l 3
+	.dc.l 0
+	.dc.l 0x100
+	.dc.b 0x2a, 0x6, 0
+	.dc.b  0
+	.popsection
+
+
+	.global note2.s
+note2.s:
+	.word 0x100
+	
+	.pushsection .gnu.build.attributes, "0x100000", %note
+	.dc.l 4 	
+	.dc.l 4		
+	.dc.l 0x100	
+	.asciz "$
1"	
+	.dc.l note2.s	
+
+	.dc.l 12 	
+	.dc.l 0		
+	.dc.l 0x100	
+	.asciz "$gcc 7.0.1"	
+
+	.dc.l 2		
+	.dc.l 0		
+	.dc.l 0x100	
+	.dc.b 0x21, 0x2	
+	.dc.b  0, 0 	
+
+	.dc.l 3		
+	.dc.l 0		
+	.dc.l 0x101	
+	.dc.b 0x2a, 0x7, 1 	
+	.dc.b  0 	
+
+	.dc.l 3		
+	.dc.l 0		
+	.dc.l 0x100	
+	.dc.b 0x2a, 0x6, 0 	
+	.dc.b  0 	
+	.popsection
+
+	.global note3.s
+note3.s:
+	.word 0x100
+	
+	.pushsection .gnu.build.attributes, "0x100000", %note
+	.dc.l 4 	
+	.dc.l 4		
+	.dc.l 0x100	
+	.asciz "$
1"	
+	.dc.l note3.s
+
+	.dc.l 12 	
+	.dc.l 0		
+	.dc.l 0x100	
+	.asciz "$gcc 7.0.1"	
+
+	.popsection
+	
+	
diff --git a/binutils/testsuite/binutils-all/note-2-64.d b/binutils/testsuite/binutils-all/note-2-64.d
new file mode 100644
index 0000000000..3dd4582011
--- /dev/null
+++ b/binutils/testsuite/binutils-all/note-2-64.d
@@ -0,0 +1,17 @@
+#PROG: objcopy
+#readelf: --notes --wide
+#objcopy: --merge-notes
+#name: merge notes section (64-bits)
+#source: note-2-64.s
+
+#...
+  Owner                 Data size	Description
+[ 	]+\$<version>1[ 	]+0x00000008[ 	]+NT_GNU_BUILD_ATTRIBUTE_OPEN[ 	]+Applies from offset 0x100 \(file: note1.s\)
+[ 	]+\$<tool>gcc 7.0.1[ 	]+0x00000000[ 	]+NT_GNU_BUILD_ATTRIBUTE_OPEN[ 	]+Applies from offset 0x100
+[ 	]+\+<stack prot>true[ 	]+0x00000000[ 	]+NT_GNU_BUILD_ATTRIBUTE_OPEN[ 	]+Applies from offset 0x100
+[ 	]+\*<PIC>static[ 	]+0x00000000[ 	]+NT_GNU_BUILD_ATTRIBUTE_OPEN[ 	]+Applies from offset 0x100
+[ 	]+\*<ABI>0x0[ 	]+0x00000000[ 	]+NT_GNU_BUILD_ATTRIBUTE_OPEN[ 	]+Applies from offset 0x100
+[ 	]+\$<version>1[ 	]+0x00000008[ 	]+NT_GNU_BUILD_ATTRIBUTE_OPEN[ 	]+Applies from offset 0x10. \(file: note2.s\)
+[ 	]+!<stack prot>false[ 	]+0x00000000[ 	]+NT_GNU_BUILD_ATTRIBUTE_OPEN[ 	]+Applies from offset 0x10.
+[ 	]+\*<PIC>pic[ 	]+0x00000000[ 	]+NT_GNU_BUILD_ATTRIBUTE_FUNC[ 	]+Applies from offset 0x10.
+#...
diff --git a/binutils/testsuite/binutils-all/note-2-64.s b/binutils/testsuite/binutils-all/note-2-64.s
new file mode 100644
index 0000000000..51317c84fc
--- /dev/null
+++ b/binutils/testsuite/binutils-all/note-2-64.s
@@ -0,0 +1,94 @@
+	.text
+	.org 0x100
+	.global note1.s
+note1.s:
+	.word 0
+	
+	.pushsection .gnu.build.attributes, "0x100000", %note
+	.balign 4
+	.dc.l 4
+	.dc.l 8
+	.dc.l 0x100
+	.asciz "$
1"
+	.8byte note1.s
+
+	.dc.l 12
+	.dc.l 0
+	.dc.l 0x100
+	.asciz "$gcc 7.0.1"
+
+	.dc.l 2
+	.dc.l 0
+	.dc.l 0x100
+	.dc.b 0x2b, 0x2
+	.dc.b  0, 0
+
+	.dc.l 3
+	.dc.l 0
+	.dc.l 0x100
+	.dc.b 0x2a, 0x7, 0
+	.dc.b  0
+
+	.dc.l 3
+	.dc.l 0
+	.dc.l 0x100
+	.dc.b 0x2a, 0x6, 0
+	.dc.b  0
+	.popsection
+
+
+	.global note2.s
+note2.s:
+	.word 0x100
+	
+	.pushsection .gnu.build.attributes, "0x100000", %note
+	.dc.l 4 	
+	.dc.l 8		
+	.dc.l 0x100	
+	.asciz "$
1"	
+	.8byte note2.s	
+
+	.dc.l 12 	
+	.dc.l 0		
+	.dc.l 0x100	
+	.asciz "$gcc 7.0.1"	
+
+	.dc.l 2		
+	.dc.l 0		
+	.dc.l 0x100	
+	.dc.b 0x21, 0x2	
+	.dc.b  0, 0 	
+
+	.dc.l 3		
+	.dc.l 0		
+	.dc.l 0x101	
+	.dc.b 0x2a, 0x7, 1 	
+	.dc.b  0 	
+
+	.dc.l 3		
+	.dc.l 0		
+	.dc.l 0x100	
+	.dc.b 0x2a, 0x6, 0 	
+	.dc.b  0 	
+	.popsection
+	
+
+	.global note3.s
+note3.s:
+	.word 0x100
+	
+	.pushsection .gnu.build.attributes, "0x100000", %note
+	.dc.l 4 	
+	.dc.l 8		
+	.dc.l 0x100	
+	.asciz "$
1"	
+	.8byte note3.s
+
+	.dc.l 12 	
+	.dc.l 0		
+	.dc.l 0x100	
+	.asciz "$gcc 7.0.1"	
+
+	.popsection
+	
+	
diff --git a/binutils/testsuite/binutils-all/objcopy.exp b/binutils/testsuite/binutils-all/objcopy.exp
index 91e0b65962..7ecc0d5af7 100644
--- a/binutils/testsuite/binutils-all/objcopy.exp
+++ b/binutils/testsuite/binutils-all/objcopy.exp
@@ -1053,6 +1053,11 @@ if [is_elf_format] {
     run_dump_test "group-6"
     run_dump_test "copy-1"
     run_dump_test "note-1"
+    if [is_elf64 tmpdir/bintest.o] {
+	run_dump_test "note-2-64"
+    } else {
+	run_dump_test "note-2-32"
+    }
 }
 
 run_dump_test "copy-2"