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Make a slight tweak to register usage to save an instruction.

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This commit is contained in:
thorpej 2002-08-12 19:33:01 +00:00
parent e042104e12
commit 3d6f9f69ab
1 changed files with 4 additions and 8 deletions
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12
sys/arch/arm/arm32/cpuswitch.S
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@ -1,4 +1,4 @@
/* $NetBSD: cpuswitch.S,v 1.9 2002/08/06 19:20:29 thorpej Exp $ */
/* $NetBSD: cpuswitch.S,v 1.10 2002/08/12 19:33:01 thorpej Exp $ */
/*
* Copyright (c) 1994-1998 Mark Brinicombe.
@ -292,8 +292,8 @@ ENTRY(cpu_switch)
ldr r7, Lcurpcb
str r0, [r7]
/* stash the old proc */
mov r7, r1
/* stash the old proc while we call functions */
mov r5, r1
#if defined(LOCKDEBUG)
/* release the sched_lock before handling interrupts */
@ -316,20 +316,16 @@ ENTRY(cpu_switch)
/* Push the old spl level onto the stack */
str r0, [sp, #-0x0004]!
mov r5, r7
/* First phase : find a new process */
/* rem: r5 = old proc */
Lswitch_search:
IRQdisable
#if defined(LOCKDEBUG)
bl _C_LABEL(sched_lock_idle)
#endif
/* Do we have any active queues */
ldr r7, Lwhichqs
ldr r3, [r7]
@ -339,7 +335,7 @@ Lswitch_search:
beq _ASM_LABEL(idle)
Lidle_ret:
/* restore old proc */
/* put old proc back in r1 */
mov r1, r5
/* rem: r1 = old proc */