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Took me some time to figure that getcontext does _UC_MACHINE_INTRV(oucp) = 0 

for us, so add a comment.  While here use official _UC_MACHINE_SET_PC
macro in another comment.
This commit is contained in:
uwe 2006-01-04 20:47:24 +00:00
parent e4a41ed570
commit 1a1aa0fb5a
1 changed files with 4 additions and 3 deletions
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7
lib/libc/arch/sh3/gen/swapcontext.S
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@ -1,4 +1,4 @@
/* $NetBSD: swapcontext.S,v 1.4 2006/01/04 19:13:48 uwe Exp $ */
/* $NetBSD: swapcontext.S,v 1.5 2006/01/04 20:47:24 uwe Exp $ */
/*-
* Copyright (c) 2001 The NetBSD Foundation, Inc.
@ -38,7 +38,7 @@
#include <machine/asm.h>
#if defined(SYSLIBC_SCCS) && !defined(lint)
RCSID("$NetBSD: swapcontext.S,v 1.4 2006/01/04 19:13:48 uwe Exp $")
RCSID("$NetBSD: swapcontext.S,v 1.5 2006/01/04 20:47:24 uwe Exp $")
#endif /* SYSLIBC_SCCS and not lint */
/*
@ -55,8 +55,9 @@ ENTRY(swapcontext)
tst r0, r0
bf 3f /* return error from getcontext */
/* Note: getcontext does _UC_MACHINE_INTRV(oucp) = 0 for us */
mov.l @sp, r0
mov.l r0, @(36 + 1 * 4, r1) /* _UC_MACHINE_PC(oucp) = pr */
mov.l r0, @(36 + 1 * 4, r1) /* _UC_MACHINE_SET_PC(oucp, pr) */
mov.l .L_setcontext, r2
2: CALL r2 /* setcontext(ucp) */
mov.l @(4, sp), r4