[src/trunk]: src/sys/arch/usermode/dev Implement cpu_getmcontext() and cpu_se...

[reinoud <reinoud%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/20d3545d8090
branches:  trunk
changeset: 772209:20d3545d8090
user:      reinoud <reinoud%NetBSD.org@localhost>
date:      Sat Dec 24 12:23:24 2011 +0000

description:
Implement cpu_getmcontext() and cpu_setmcontext()

diffstat:

 sys/arch/usermode/dev/cpu.c |  15 +++++++++++----
 1 files changed, 11 insertions(+), 4 deletions(-)

diffs (47 lines):

diff -r 76befbb634dd -r 20d3545d8090 sys/arch/usermode/dev/cpu.c
--- a/sys/arch/usermode/dev/cpu.c       Sat Dec 24 05:05:55 2011 +0000
+++ b/sys/arch/usermode/dev/cpu.c       Sat Dec 24 12:23:24 2011 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: cpu.c,v 1.55 2011/12/15 03:42:32 jmcneill Exp $ */
+/* $NetBSD: cpu.c,v 1.56 2011/12/24 12:23:24 reinoud Exp $ */
 
 /*-
  * Copyright (c) 2007 Jared D. McNeill <jmcneill%invisible.ca@localhost>
@@ -30,7 +30,7 @@
 #include "opt_hz.h"
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: cpu.c,v 1.55 2011/12/15 03:42:32 jmcneill Exp $");
+__KERNEL_RCSID(0, "$NetBSD: cpu.c,v 1.56 2011/12/24 12:23:24 reinoud Exp $");
 
 #include <sys/param.h>
 #include <sys/conf.h>
@@ -224,19 +224,26 @@
 void
 cpu_getmcontext(struct lwp *l, mcontext_t *mcp, unsigned int *flags)
 {
-       panic("cpu_getmcontext");
+       struct pcb *pcb = lwp_getpcb(l);
+       ucontext_t *ucp = &pcb->pcb_userret_ucp;
+
 #ifdef CPU_DEBUG
        dprintf_debug("cpu_getmcontext\n");
 #endif
+       memcpy(mcp, &ucp->uc_mcontext, sizeof(mcontext_t));
+       return;
 }
 
 int
 cpu_setmcontext(struct lwp *l, const mcontext_t *mcp, unsigned int flags)
 {
-       panic("cpu_setmcontext");
+       struct pcb *pcb = lwp_getpcb(l);
+       ucontext_t *ucp = &pcb->pcb_userret_ucp;
+
 #ifdef CPU_DEBUG
        dprintf_debug("cpu_setmcontext\n");
 #endif
+       memcpy(&ucp->uc_mcontext, mcp, sizeof(mcontext_t));
        return 0;
 }