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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/sys | |
| 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/sys')
| -rw-r--r-- | sys/sys/sysent.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/sys/sys/sysent.h b/sys/sys/sysent.h index a4049876454b..c03f9b4c9f7d 100644 --- a/sys/sys/sysent.h +++ b/sys/sys/sysent.h @@ -129,6 +129,7 @@ struct sysentvec { void (*sv_schedtail)(struct thread *); void (*sv_thread_detach)(struct thread *); int (*sv_trap)(struct thread *); + u_long *sv_hwcap; /* Value passed in AT_HWCAP. */ }; #define SV_ILP32 0x000100 /* 32-bit executable. */ |