Module Name: src
Committed By: matt
Date: Mon Aug 16 17:58:43 UTC 2010
Modified Files:
src/sys/arch/mips/mips [matt-nb5-mips64]: locore.S
Log Message:
Add lwp_oncpu
To generate a diff of this commit:
cvs rdiff -u -r1.167.38.18 -r1.167.38.19 src/sys/arch/mips/mips/locore.S
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/arch/mips/mips/locore.S
diff -u src/sys/arch/mips/mips/locore.S:1.167.38.18 src/sys/arch/mips/mips/locore.S:1.167.38.19
--- src/sys/arch/mips/mips/locore.S:1.167.38.18 Sun May 16 05:00:12 2010
+++ src/sys/arch/mips/mips/locore.S Mon Aug 16 17:58:43 2010
@@ -1,4 +1,4 @@
-/* $NetBSD: locore.S,v 1.167.38.18 2010/05/16 05:00:12 matt Exp $ */
+/* $NetBSD: locore.S,v 1.167.38.19 2010/08/16 17:58:43 matt Exp $ */
/*
* Copyright (c) 1992, 1993
@@ -57,6 +57,7 @@
#include "opt_multiprocessor.h"
#include <sys/cdefs.h>
+#include <sys/errno.h>
#include <machine/param.h>
#include <mips/asm.h>
@@ -408,6 +409,28 @@
#endif /* __HAVE_FAST_SOFTINTS */
/*
+ * int lwp_oncpu(lwp_t *);
+ */
+LEAF(lwp_oncpu)
+ PTR_L t0, L_ADDR(MIPS_CURLWP) # get curpcb
+ li v0, EFAULT # assume failure
+ PTR_LA t1, 1f # load addr of cleanup
+ PTR_S t1, U_PCB_ONFAULT(t0) # save onfault handler
+ PTR_L t2, L_CPU(a0) # grab cpu of supplied lwp
+ PTR_L t3, CPU_INFO_CURLWP(t2) # grab curlwp of that cpu
+ li v0, ESRCH # assume the lwp isn't curlwp
+ bne a0, t3, 1f # branch if true (not equal)
+ nop
+ PTR_S t2, 0(a1) # return the cpu_info
+ li v0, 0 # load success
+1:
+ PTR_S zero, U_PCB_ONFAULT(t0) # reset fault handler
+ j ra # and return.
+ nop
+END(lwp_oncpu)
+
+
+/*
* savectx(struct user *up)
*/
LEAF(savectx)
