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Use branch-slot in STACK_SWITCH, suggested by Martin Husemann.

This commit is contained in:
petrov 2003-08-25 23:00:23 +00:00
parent c139cd4893
commit 2cae323122
1 changed files with 5 additions and 5 deletions
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10
lib/libpthread/arch/sparc64/pthread_switch.S
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@ -1,4 +1,4 @@
/* $NetBSD: pthread_switch.S,v 1.5 2003/08/25 22:48:24 petrov Exp $ */
/* $NetBSD: pthread_switch.S,v 1.6 2003/08/25 23:00:23 petrov Exp $ */
/*-
* Copyright (c) 2002 The NetBSD Foundation, Inc.
@ -64,11 +64,11 @@
*/
#define STACK_SWITCH(pt,tmp) \
ldx [pt + PT_TRAPUC], tmp ; \
brnz,a tmp, 1f ; \
nop ; \
brnz,a tmp, 8f ; \
stx %g0, [pt + PT_TRAPUC] ; \
ldx [pt + PT_UC], tmp ; \
1: add tmp, - STACK_ALIGN(STACKSPACE + CONTEXTSIZE) - BIAS, %sp ; \
stx %g0, [pt + PT_TRAPUC]
8: add tmp, - STACK_ALIGN(STACKSPACE + CONTEXTSIZE) - BIAS, %sp ; \
ENTRY(pthread__switch)
save %sp, -STACK_ALIGN(CC64FSZ + CONTEXTSIZE), %sp