From b0a57f94a42b1b177dab551243d9e0dec4a70379 Mon Sep 17 00:00:00 2001
From: David du Colombier <0intro@gmail.com>
Date: Fri, 24 Jan 1992 00:00:00 +0000
Subject: [PATCH] Plan 9 from Bell Labs 1992-01-24

---
 gnot/trap.c     | 6 ++++--
 pc/trap.c       | 6 ++++--
 port/devkprof.c | 2 +-
 power/trap.c    | 6 ++++--
 ss/trap.c       | 6 ++++--
 5 files changed, 17 insertions(+), 9 deletions(-)

diff --git a/gnot/trap.c b/gnot/trap.c
index 2a5d2d747d93a0ad8ee600f086c3d79031205af9..40bc63c28c40cd9d220648d6a9a99a4a21d2bbb2 100644
--- a/gnot/trap.c
+++ b/gnot/trap.c
@@ -158,7 +158,7 @@ dumpregs(Ureg *ur)
 int
 notify(Ureg *ur)
 {
-	int l;
+	int l, sent;
 	ulong s, sp;
 	Note *n;
 
@@ -184,9 +184,11 @@ notify(Ureg *ur)
 		qunlock(&u->p->debug);
 		pexit(n->msg, n->flag!=NDebug);
 	}
+	sent = 0;
 	if(!u->notified){
 		if(!u->notify)
 			goto Die;
+		sent = 1;
 		u->svvo = ur->vo;
 		u->svsr = ur->sr;
 		sp = ur->usp;
@@ -217,7 +219,7 @@ notify(Ureg *ur)
 	}
 	qunlock(&u->p->debug);
 	splx(s);
-	return 1;
+	return sent;
 }
 
 /*
diff --git a/pc/trap.c b/pc/trap.c
index 891baef9a9797e6946e01c5c0bb6f6a822ac573c..3fbba6a22a576c23014a0a38a9c3fb8a5bdddcc1 100644
--- a/pc/trap.c
+++ b/pc/trap.c
@@ -360,7 +360,7 @@ syscall(Ureg *ur)
 int
 notify(Ureg *ur)
 {
-	int l;
+	int l, sent;
 	ulong s, sp;
 	Note *n;
 
@@ -386,9 +386,11 @@ notify(Ureg *ur)
 		qunlock(&u->p->debug);
 		pexit(n->msg, n->flag!=NDebug);
 	}
+	sent = 0;
 	if(!u->notified){
 		if(!u->notify)
 			goto Die;
+		sent = 1;
 		u->svcs = ur->cs;
 		u->svss = ur->ss;
 		u->svflags = ur->flags;
@@ -419,7 +421,7 @@ notify(Ureg *ur)
 	}
 	qunlock(&u->p->debug);
 	splx(s);
-	return 1;
+	return sent;
 }
 
 /*
diff --git a/port/devkprof.c b/port/devkprof.c
index 82191a187833c6afd63896f273d2555f6b6b45d5..4497e9f1c29088d224739175b8480a89bf6d842e 100644
--- a/port/devkprof.c
+++ b/port/devkprof.c
@@ -184,7 +184,7 @@ kproftimer(ulong pc)
 	if(kprof.time == 0)
 		return;
 	/*
-	 *  if the pc is coming out of slplo pr splx,
+	 *  if the pc is coming out of spllo or splx,
 	 *  use the pc saved when we went splhi.
 	 */
 	if(pc>=(ulong)spllo && pc<=(ulong)spldone)
diff --git a/power/trap.c b/power/trap.c
index 7b28dcdad94a88f80e3343072f38684a212986c3..dd0b58c34e900cfb9e9f8b8fed7eb5d5f8754ceb 100644
--- a/power/trap.c
+++ b/power/trap.c
@@ -367,7 +367,7 @@ dumpregs(Ureg *ur)
 int
 notify(Ureg *ur)
 {
-	int l;
+	int l, sent;
 	ulong s, sp;
 	Note *n;
 
@@ -393,9 +393,11 @@ notify(Ureg *ur)
 		qunlock(&u->p->debug);
 		pexit(n->msg, n->flag!=NDebug);
 	}
+	sent = 0;
 	if(!u->notified){
 		if(!u->notify)
 			goto Die;
+		sent = 1;
 		u->svstatus = ur->status;
 		sp = ur->usp;
 		sp -= sizeof(Ureg);
@@ -424,7 +426,7 @@ notify(Ureg *ur)
 	}
 	qunlock(&u->p->debug);
 	splx(s);
-	return 1;
+	return sent;
 }
 
 /*
diff --git a/ss/trap.c b/ss/trap.c
index afcbc181594e1278e3a040fac46fd59cc6a3af0f..f33f8dacffc4561dadae39db062ba5357a3aa082 100644
--- a/ss/trap.c
+++ b/ss/trap.c
@@ -228,7 +228,7 @@ dumpregs(Ureg *ur)
 int
 notify(Ureg *ur)
 {
-	int l;
+	int l, sent;
 	ulong s, sp;
 	Note *n;
 
@@ -254,9 +254,11 @@ notify(Ureg *ur)
 		qunlock(&u->p->debug);
 		pexit(n->msg, n->flag!=NDebug);
 	}
+	sent = 0;
 	if(!u->notified){
 		if(!u->notify)
 			goto Die;
+		sent = 1;
 		u->svpsr = ur->psr;
 		sp = ur->usp;
 		sp -= sizeof(Ureg);
@@ -287,7 +289,7 @@ notify(Ureg *ur)
 	}
 	qunlock(&u->p->debug);
 	splx(s);
-	return 1;
+	return sent;
 }
 
 /*