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| author | jhb <jhb@FreeBSD.org> | 2002-05-21 20:21:53 +0000 |
|---|---|---|
| committer | jhb <jhb@FreeBSD.org> | 2002-05-21 20:21:53 +0000 |
| commit | 1a9e2f75a7848f318007acaac78c5571e3e83033 (patch) | |
| tree | f0a028023cd692b0e46d479c253508cdb3866a7d /sys/amd64/include/cpufunc.h | |
| parent | 8623a7bc17bf717c85ed19c0dcd320600b1360fb (diff) | |
| download | FreeBSD-src-1a9e2f75a7848f318007acaac78c5571e3e83033.zip FreeBSD-src-1a9e2f75a7848f318007acaac78c5571e3e83033.tar.gz | |
Add an inline function cpu_pause() for the IA32 'pause' instruction.
Diffstat (limited to 'sys/amd64/include/cpufunc.h')
| -rw-r--r-- | sys/amd64/include/cpufunc.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/sys/amd64/include/cpufunc.h b/sys/amd64/include/cpufunc.h index a77fda1..e0b7c99 100644 --- a/sys/amd64/include/cpufunc.h +++ b/sys/amd64/include/cpufunc.h @@ -560,6 +560,12 @@ load_dr7(u_int sel) __asm __volatile("movl %0,%%dr7" : : "r" (sel)); } +static __inline void +cpu_pause(void) +{ + __asm __volatile("pause"); +} + static __inline register_t intr_disable(void) { |
