6 files changed, 35 insertions(+), 3 deletions(-)

M carrera/trap.c
M pc/trap.c
M port/cache.c
M port/devproc.c
M port/portfns.h
M power/trap.c

@@ 681,3 681,14 @@ setregisters(Ureg *xp, char *pureg, char *uva, int n)
 	memmove(pureg, uva, n);
 	xp->status = status;
 }
+
+/* Give enough context in the ureg to produce a kernel stack for
+ * a sleeping process
+ */
+void
+setkernur(Ureg *xp, Proc *p)
+{
+	xp->pc = p->sched.pc;
+	xp->sp = p->sched.sp;
+	xp->r31 = (ulong)sched;
+}

@@ 591,3 591,13 @@ setregisters(Ureg *xp, char *pureg, char *uva, int n)
 	xp->cs = cs;
 	xp->ss = ss;
 }
+
+/* Give enough context in the ureg to produce a kernel stack for
+ * a sleeping process
+ */
+void
+setkernur(Ureg *xp, Proc *p)
+{
+	xp->pc = p->sched.pc;
+	xp->sp = p->sched.sp;
+}

@@ 555,6 555,7 @@ cwrite(Chan* c, uchar *buf, int len, ulong offset)
 			m->list = e;
 		else
 			p->next = e;
+
 		if(tail != 0)
 			tail->next = f;
 	}

@@ 350,9 350,7 @@ procread(Chan *c, void *va, long n, ulong offset)
 
 	case Qkregs:
 		memset(&kur, 0, sizeof(Ureg));
-		kur.pc = p->sched.pc;
-		kur.sp = p->sched.sp;
-		kur.r31 = (ulong)sched;
+		setkernur(&kur, p);
 		rptr = (uchar*)&kur;
 		rsize = sizeof(Ureg);
 		goto regread;

@@ 230,6 230,7 @@ long		seconds(void);
 ulong		segattach(Proc*, ulong, char *, ulong, ulong);
 void		segpage(Segment*, Page*);
 int		setcolor(ulong, ulong, ulong, ulong);
+void		setkernur(Ureg*, Proc*);
 int		setlabel(Label*);
 void		setregisters(Ureg*, char*, char*, int);
 void		setswapchan(Chan*);

@@ 647,3 647,14 @@ setregisters(Ureg *xp, char *pureg, char *uva, int n)
 	memmove(pureg, uva, n);
 	xp->status = status;
 }
+
+/* Give enough context in the ureg to produce a kernel stack for
+ * a sleeping process
+ */
+void
+setkernur(Ureg *xp, Proc *p)
+{
+	xp->pc = p->sched.pc;
+	xp->sp = p->sched.sp;
+	xp->r31 = (ulong)sched;
+}