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| author | mux <mux@FreeBSD.org> | 2004-08-03 18:44:27 +0000 |
|---|---|---|
| committer | mux <mux@FreeBSD.org> | 2004-08-03 18:44:27 +0000 |
| commit | 35780dc21adda12f4e93177415556e6698e017e4 (patch) | |
| tree | de3272d2386247caa65d7fbb3bf4c7418c6ebc1b /sys/amd64/include | |
| parent | 81234cca4a890862a2410bb1de1a553a60c285a6 (diff) | |
| download | FreeBSD-src-35780dc21adda12f4e93177415556e6698e017e4.zip FreeBSD-src-35780dc21adda12f4e93177415556e6698e017e4.tar.gz | |
Instead of calling ia32_pause() conditionally on __i386__ or __amd64__
being defined, define and use a new MD macro, cpu_spinwait(). It only
expands to something on i386 and amd64, so the compiled code should be
identical.
Name of the macro found by: jhb
Reviewed by: jhb
Diffstat (limited to 'sys/amd64/include')
| -rw-r--r-- | sys/amd64/include/cpu.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/sys/amd64/include/cpu.h b/sys/amd64/include/cpu.h index f8a2ee3..f069d2e 100644 --- a/sys/amd64/include/cpu.h +++ b/sys/amd64/include/cpu.h @@ -50,9 +50,10 @@ #undef COPY_SIGCODE /* don't copy sigcode above user stack in exec */ #define cpu_exec(p) /* nothing */ -#define cpu_swapin(p) /* nothing */ +#define cpu_swapin(p) /* nothing */ #define cpu_getstack(td) ((td)->td_frame->tf_rsp) -#define cpu_setstack(td, ap) ((td)->td_frame->tf_rsp = (ap)) +#define cpu_setstack(td, ap) ((td)->td_frame->tf_rsp = (ap)) +#define cpu_spinwait() ia32_pause() #define TRAPF_USERMODE(framep) \ (ISPL((framep)->tf_cs) == SEL_UPL) |
