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| author | John Baldwin <jhb@FreeBSD.org> | 2017-09-14 14:26:55 +0000 |
|---|---|---|
| committer | John Baldwin <jhb@FreeBSD.org> | 2017-09-14 14:26:55 +0000 |
| commit | c2f37b92452cec6ab7fc5b9d2b682ac9af4bd436 (patch) | |
| tree | 20f68657797a686cd1c45afe622fc6ec17af921d /sys/sparc64 | |
| parent | cbc785c2938ea79fd630f46586873985fe476327 (diff) | |
| download | src-c2f37b92452cec6ab7fc5b9d2b682ac9af4bd436.tar.gz src-c2f37b92452cec6ab7fc5b9d2b682ac9af4bd436.zip | |
Add AT_HWCAP and AT_EHDRFLAGS on all platforms.
A new 'u_long *sv_hwcap' field is added to 'struct sysentvec'. A
process ABI can set this field to point to a value holding a mask of
architecture-specific CPU feature flags. If an ABI does not wish to
supply AT_HWCAP to processes the field can be left as NULL.
The support code for AT_EHDRFLAGS was already present on all systems,
just the #define was not present. This is a step towards unifying the
AT_* constants across platforms.
Reviewed by: kib
MFC after: 1 month
Differential Revision: https://reviews.freebsd.org/D12290
Notes
Notes:
svn path=/head/; revision=323579
Diffstat (limited to 'sys/sparc64')
| -rw-r--r-- | sys/sparc64/include/elf.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/sys/sparc64/include/elf.h b/sys/sparc64/include/elf.h index 448ca66793ec..22ee3cb46e75 100644 --- a/sys/sparc64/include/elf.h +++ b/sys/sparc64/include/elf.h @@ -92,8 +92,10 @@ __ElfType(Auxinfo); #define AT_PAGESIZESLEN 21 /* Number of pagesizes. */ #define AT_TIMEKEEP 22 /* Pointer to timehands. */ #define AT_STACKPROT 23 /* Initial stack protection. */ +#define AT_EHDRFLAGS 24 /* e_flags field from elf hdr */ +#define AT_HWCAP 25 /* CPU feature flags. */ -#define AT_COUNT 24 /* Count of defined aux entry types. */ +#define AT_COUNT 26 /* Count of defined aux entry types. */ /* Define "machine" characteristics */ #if __ELF_WORD_SIZE == 32 |