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Add support for displaying and merging GNU_BUILD_NOTEs.

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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.
This commit is contained in:
Nick Clifton
2017-03-01 11:09:46 +00:00
parent a7e8b06b89
commit 9ef920e933
12 changed files with 1141 additions and 34 deletions
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46
include/elf/common.h
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@@ -537,6 +537,7 @@
/* #define SHF_MASKOS 0x0F000000 *//* OS-specific semantics */
#define SHF_MASKOS 0x0FF00000 /* New value, Oct 4, 1999 Draft */
#define SHF_GNU_BUILD_NOTE (1 << 20) /* Section contains GNU BUILD ATTRIBUTE notes. */
#define SHF_MASKPROC 0xF0000000 /* Processor-specific semantics */
/* This used to be implemented as a processor specific section flag.
@@ -670,6 +671,51 @@
#define NT_GNU_HWCAP 2 /* Used by ld.so and kernel vDSO. */
#define NT_GNU_BUILD_ID 3 /* Generated by ld --build-id. */
#define NT_GNU_GOLD_VERSION 4 /* Generated by gold. */
#define NT_GNU_PROPERTY_TYPE_0 5 /* Generated by gcc. */
#define NT_GNU_BUILD_ATTRIBUTE_OPEN 0x100
#define NT_GNU_BUILD_ATTRIBUTE_FUNC 0x101
#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 1
#define GNU_BUILD_ATTRIBUTE_STACK_PROT 2
#define GNU_BUILD_ATTRIBUTE_RELRO 3
#define GNU_BUILD_ATTRIBUTE_STACK_SIZE 4
#define GNU_BUILD_ATTRIBUTE_TOOL 5
#define GNU_BUILD_ATTRIBUTE_ABI 6
#define GNU_BUILD_ATTRIBUTE_PIC 7
#define NOTE_GNU_PROPERTY_SECTION_NAME ".note.gnu.property"
#define GNU_BUILD_ATTRS_SECTION_NAME ".gnu.build.attributes"
/* Values used in GNU .note.gnu.property notes (NT_GNU_PROPERTY_TYPE_0). */
#define GNU_PROPERTY_STACK_SIZE 1
#define GNU_PROPERTY_NO_COPY_ON_PROTECTED 2
#define GNU_PROPERTY_X86_ISA_1_USED 0xc0000000
#define GNU_PROPERTY_X86_ISA_1_NEEDED 0xc0000001
#define GNU_PROPERTY_X86_ISA_1_486 (1U << 0)
#define GNU_PROPERTY_X86_ISA_1_586 (1U << 1)
#define GNU_PROPERTY_X86_ISA_1_686 (1U << 2)
#define GNU_PROPERTY_X86_ISA_1_SSE (1U << 3)
#define GNU_PROPERTY_X86_ISA_1_SSE2 (1U << 4)
#define GNU_PROPERTY_X86_ISA_1_SSE3 (1U << 5)
#define GNU_PROPERTY_X86_ISA_1_SSSE3 (1U << 6)
#define GNU_PROPERTY_X86_ISA_1_SSE4_1 (1U << 7)
#define GNU_PROPERTY_X86_ISA_1_SSE4_2 (1U << 8)
#define GNU_PROPERTY_X86_ISA_1_AVX (1U << 9)
#define GNU_PROPERTY_X86_ISA_1_AVX2 (1U << 10)
#define GNU_PROPERTY_X86_ISA_1_AVX512F (1U << 11)
#define GNU_PROPERTY_X86_ISA_1_AVX512CD (1U << 12)
#define GNU_PROPERTY_X86_ISA_1_AVX512ER (1U << 13)
#define GNU_PROPERTY_X86_ISA_1_AVX512PF (1U << 14)
#define GNU_PROPERTY_X86_ISA_1_AVX512VL (1U << 15)
#define GNU_PROPERTY_X86_ISA_1_AVX512DQ (1U << 16)
#define GNU_PROPERTY_X86_ISA_1_AVX512BW (1U << 17)
/* Values used in GNU .note.ABI-tag notes (NT_GNU_ABI_TAG). */
#define GNU_ABI_TAG_LINUX 0