From 2c01d45a498d48346a25818d6f542094dd1be1a8 Mon Sep 17 00:00:00 2001
From: ceriel <none@none>
Date: Thu, 17 Mar 1988 09:24:01 +0000
Subject: [PATCH] fix in csb: must be able to handle 0 cases

---
 mach/ns/libem/csb.s     | 2 ++
 mach/ns/libem/putchar.s | 2 +-
 mach/ns/libem/trp.s     | 2 +-
 3 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/mach/ns/libem/csb.s b/mach/ns/libem/csb.s
index 56ed67558..881fa03f1 100644
--- a/mach/ns/libem/csb.s
+++ b/mach/ns/libem/csb.s
@@ -12,6 +12,8 @@
 .csb:
 	save[r2,r3]
 	movd 4(r1), r2		!number of entries
+	cmpqd 0, r2
+	beq 3f
 	movd r1, r3
 1:
 	addd 8, r3		!find addres of next index
diff --git a/mach/ns/libem/putchar.s b/mach/ns/libem/putchar.s
index 26fa7f337..2d985de2e 100644
--- a/mach/ns/libem/putchar.s
+++ b/mach/ns/libem/putchar.s
@@ -15,6 +15,6 @@
 	addr	8(fp),tos
 	movqd	1,tos
 	bsr	_write
-	asjspb	-12
+	adjspb	-12
 	exit	[]
 	ret	0
diff --git a/mach/ns/libem/trp.s b/mach/ns/libem/trp.s
index 7eebda5cf..b958aa428 100644
--- a/mach/ns/libem/trp.s
+++ b/mach/ns/libem/trp.s
@@ -22,7 +22,7 @@
 	movqd 0, @.trpreg
 	jsr r1
 3:
-	adjspd $-4
+	adjspd -4
 	restore [r0, r1]
 	ret 4
 2: