diff options
| author | Miod Vallat <miod@cvs.openbsd.org> | 2006-11-18 22:48:16 +0000 |
|---|---|---|
| committer | Miod Vallat <miod@cvs.openbsd.org> | 2006-11-18 22:48:16 +0000 |
| commit | def157aefdd2c7b8e41bba324550c635c1c148ca (patch) | |
| tree | 15502ffb24acccf8469892e421aa61949f4b86e9 /sys/arch/m88k | |
| parent | a92f90b45d06b1f85510f0ccd8c117898d4e5186 (diff) | |
In mtx_leave(), jump to the leaf splx() instead of building a frame and
calling it.
Diffstat (limited to 'sys/arch/m88k')
| -rw-r--r-- | sys/arch/m88k/m88k/mutex.S | 17 |
1 files changed, 4 insertions, 13 deletions
diff --git a/sys/arch/m88k/m88k/mutex.S b/sys/arch/m88k/m88k/mutex.S index f8b67d58400..9fc8b2e5b1d 100644 --- a/sys/arch/m88k/m88k/mutex.S +++ b/sys/arch/m88k/m88k/mutex.S @@ -1,4 +1,4 @@ -/* $OpenBSD: mutex.S,v 1.1 2005/12/03 19:01:14 miod Exp $ */ +/* $OpenBSD: mutex.S,v 1.2 2006/11/18 22:48:15 miod Exp $ */ /* * Copyright (c) 2005, Miodrag Vallat. @@ -106,13 +106,12 @@ enter_panic: ld r2, r2, MTX_WANTIPL ld r4, r31, 0 - or r3, r0, 1 + ldcr r3, CPU st r3, r4, MTX_LOCK /* locked! */ st r2, r4, MTX_OLDIPL /* save into mtx_oldipl */ #ifdef DIAGNOSTIC /* necessary for MUTEX_ASSERT_LOCKED */ - ldcr r3, CPU st r3, r4, MTX_CPU /* mtx->mtx_cpu = curcpu() */ #endif @@ -126,9 +125,6 @@ enter_panic: * void mtx_leave(struct mutex *mtx) */ ENTRY(mtx_leave) - subu r31, r31, 8 - st r1, r31, 0 - ld r3, r2, MTX_OLDIPL st r0, r2, MTX_CPU /* mtx->mtx_cpu = NULL */ #ifdef DEBUG @@ -137,12 +133,7 @@ ENTRY(mtx_leave) bcnd.n ne0, r3, 1f /* splx(mtx->mtx_oldipl) */ st r0, r2, MTX_LOCK /* mtx->mtx_lock = 0 */ - bsr.n _C_LABEL(spl0) - addu r1, r1, 2f - . - 4 + br _C_LABEL(spl0) 1: - bsr.n _C_LABEL(setipl) + br.n _C_LABEL(setipl) or r2, r3, r0 -2: - ld r1, r31, 0 - jmp.n r1 - addu r31, r31, 8 |