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x86-64: Add Intel LAM property support

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Add Intel Linear Address Masking (LAM) property support.  LAM modifies
the checking that is applied to 64-bit linear addresses, allowing
software to use of the untranslated address bits for metadata.

bfd/

	* elf-linker-x86.h (elf_x86_cet_report): Renamed to ...
	(elf_x86_prop_report): This.
	(elf_linker_x86_params): Add lam_u48, lam_u57, lam_u48_report
	and lam_u57_report.
	* elfxx-x86.c (_bfd_x86_elf_link_setup_gnu_properties): Support
	GNU_PROPERTY_X86_FEATURE_1_LAM_U48 and
	GNU_PROPERTY_X86_FEATURE_1_LAM_U57.
	(_bfd_x86_elf_link_fixup_gnu_properties): Keep LAM features only
	for 64-bit output.

binutils/

	* NEWS: Mention LAM_U48 and LAM_U57 support.
	* elfedit.c (elf_x86_feature): Support lam_u48 and lam_u57.
	(usage): Add lam_u48 and lam_u57.
	* readelf.c (decode_x86_feature_1): Support LAM_U48 and LAM_U57.
	* doc/binutils.texi: Update elfedit with lam_u48 and lam_u57
	support.
	* testsuite/binutils-all/x86-64/lam-u48.d: New file.
	* testsuite/binutils-all/x86-64/lam-u48.s: Likewise.
	* testsuite/binutils-all/x86-64/lam-u57.d: Likewise.
	* testsuite/binutils-all/x86-64/lam-u57.s: Likewise.

include/

	* elf/common.h (GNU_PROPERTY_X86_FEATURE_1_LAM_U48): New.
	(GNU_PROPERTY_X86_FEATURE_1_LAM_U57): Likewise.

ld/

	* NEWS: Mention LAM_U48 and LAM_U57 support.
	* ld.texi: Document LAM_U48 and LAM_U57 support.
	* emulparams/cet.sh: Updated.
	* emulparams/elf_x86_64.sh: Source x86-64-lam.sh.
	* emulparams/x86-64-lam.sh: New file.
	* testsuite/ld-x86-64/property-x86-lam-u48-1a.d: Likewise.
	* testsuite/ld-x86-64/property-x86-lam-u48-1b.d: Likewise.
	* testsuite/ld-x86-64/property-x86-lam-u48-2.d: Likewise.
	* testsuite/ld-x86-64/property-x86-lam-u48-3a.d: Likewise.
	* testsuite/ld-x86-64/property-x86-lam-u48-3b.d: Likewise.
	* testsuite/ld-x86-64/property-x86-lam-u48-4.d: Likewise.
	* testsuite/ld-x86-64/property-x86-lam-u48-5.d: Likewise.
	* testsuite/ld-x86-64/property-x86-lam-u48.s: Likewise.
	* testsuite/ld-x86-64/property-x86-lam-u57-1a.d: Likewise.
	* testsuite/ld-x86-64/property-x86-lam-u57-1b.d: Likewise.
	* testsuite/ld-x86-64/property-x86-lam-u57-2.d: Likewise.
	* testsuite/ld-x86-64/property-x86-lam-u57-3a.d: Likewise.
	* testsuite/ld-x86-64/property-x86-lam-u57-3b.d: Likewise.
	* testsuite/ld-x86-64/property-x86-lam-u57-4.d: Likewise.
	* testsuite/ld-x86-64/property-x86-lam-u57-5.d: Likewise.
	* testsuite/ld-x86-64/property-x86-lam-u57.s: Likewise.
	* testsuite/ld-x86-64/x86-64.exp: Run LAM tests.
This commit is contained in:
H.J. Lu 2020-12-23 13:00:39 -08:00
parent 5cc0917c38
commit 279d901e5a
37 changed files with 609 additions and 37 deletions
Download patch file Download diff file Expand all files Collapse all files

12
binutils/testsuite/binutils-all/x86-64/lam-u48.d Normal file
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@ -0,0 +1,12 @@
#PROG: objcopy
#as: --64 -defsym __64_bit__=1 -mx86-used-note=yes
#objcopy:
#readelf: -n
Displaying notes found in: .note.gnu.property
[ ]+Owner[ ]+Data size[ ]+Description
GNU 0x00000010 NT_GNU_PROPERTY_TYPE_0
Properties: x86 feature: LAM_U48
GNU 0x00000020 NT_GNU_PROPERTY_TYPE_0
Properties: x86 ISA used:
x86 feature used: x86

27
binutils/testsuite/binutils-all/x86-64/lam-u48.s Normal file
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@ -0,0 +1,27 @@
.section ".note.gnu.property", "a"
.ifdef __64_bit__
.p2align 3
.else
.p2align 2
.endif
.long 1f - 0f /* name length */
.long 5f - 2f /* data length */
.long 5 /* note type */
0: .asciz "GNU" /* vendor name */
1:
.ifdef __64_bit__
.p2align 3
.else
.p2align 2
.endif
2: .long 0xc0000002 /* pr_type. */
.long 4f - 3f /* pr_datasz. */
3:
.long 0x4
4:
.ifdef __64_bit__
.p2align 3
.else
.p2align 2
.endif
5:

12
binutils/testsuite/binutils-all/x86-64/lam-u57.d Normal file
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@ -0,0 +1,12 @@
#PROG: objcopy
#as: --64 -defsym __64_bit__=1 -mx86-used-note=yes
#objcopy:
#readelf: -n
Displaying notes found in: .note.gnu.property
[ ]+Owner[ ]+Data size[ ]+Description
GNU 0x00000010 NT_GNU_PROPERTY_TYPE_0
Properties: x86 feature: LAM_U57
GNU 0x00000020 NT_GNU_PROPERTY_TYPE_0
Properties: x86 ISA used:
x86 feature used: x86

27
binutils/testsuite/binutils-all/x86-64/lam-u57.s Normal file
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@ -0,0 +1,27 @@
.section ".note.gnu.property", "a"
.ifdef __64_bit__
.p2align 3
.else
.p2align 2
.endif
.long 1f - 0f /* name length */
.long 5f - 2f /* data length */
.long 5 /* note type */
0: .asciz "GNU" /* vendor name */
1:
.ifdef __64_bit__
.p2align 3
.else
.p2align 2
.endif
2: .long 0xc0000002 /* pr_type. */
.long 4f - 3f /* pr_datasz. */
3:
.long 0x8
4:
.ifdef __64_bit__
.p2align 3
.else
.p2align 2
.endif
5: