From 0561c74f70b0d348b555a3ae20056e5331b3c4c2 Mon Sep 17 00:00:00 2001
From: David du Colombier <0intro@gmail.com>
Date: Sat, 12 Mar 1994 00:00:00 +0000
Subject: [PATCH] Plan 9 from Bell Labs 1994-03-12

---
 boot/local.c | 20 ++++++++++++++++----
 carrera/l.s  |  8 ++++----
 port/qio.c   |  5 ++---
 3 files changed, 22 insertions(+), 11 deletions(-)

diff --git a/boot/local.c b/boot/local.c
index 58220587cedde0c255b0c979620221eaad38d3dd..54ede9d73ae21a15a8e6dab863a8cb43520000e5 100644
--- a/boot/local.c
+++ b/boot/local.c
@@ -2,18 +2,30 @@
 #include <libc.h>
 #include <../boot/boot.h>
 
+static char diskname[2*NAMELEN];
 static char *disk;
 static char *niob;
 
 void
 configlocal(Method *mp)
 {
+	char *p;
+	int n;
+
+	disk = mp->arg;			/* 1st try from config file */
+	if(disk && (niob = strchr(disk, ' ')))	/* assign = */
+		*niob++ = 0;
+	if(strncmp(argv0, "dksc(0,", 7) == 0){
+		p = strchr(argv0, ',');
+		n = strtoul(p+1, 0, 10);
+		sprint(diskname, "#w%d/sd%dfs", n, n);
+		disk = diskname;
+		/*print("argv0=\"%s\" --> disk = \"%s\"\n", argv0, disk);/**/
+	}
 	if(*sys == '/' || *sys == '#')
 		disk = sys;
-	else
-		disk = mp->arg;
-	if(niob = strchr(disk, ' '))	/* assign = */
-		*niob++ = 0;
+	if(disk)
+		setenv("bootdisk", disk);
 	USED(mp);
 }
 
diff --git a/carrera/l.s b/carrera/l.s
index e3879c2bc48e4f5a86eb50aa00e1b4b6bac255ba..83dc1b7ce79798c41b55a7900ba84a07c0e0922b 100644
--- a/carrera/l.s
+++ b/carrera/l.s
@@ -823,9 +823,9 @@ TEXT	fwblock(SB), $-4	/* fwblock(void*port, void *block, csum) */
 fwloop:
 	MOVV	0(R2), R5
 	MOVV	R5, 0(R1)
-	ADDU	R5, R3
+	XOR	R5, R3
 	SRLV	$32, R5
-	ADDU	R5, R3
+	XOR	R5, R3
 
 	ADD	$8, R2
 	SUB	$1, R4
@@ -842,9 +842,9 @@ TEXT	frblock(SB), $-4	/* frblock(void*port, void *block, csum) */
 frloop:
 	MOVV	0(R1), R5
 	MOVV	R5, 0(R2)
-	ADDU	R5, R3
+	XOR	R5, R3
 	SRLV	$32, R5
-	ADDU	R5, R3
+	XOR	R5, R3
 
 	ADD	$8, R2
 	SUB	$1, R4
diff --git a/port/qio.c b/port/qio.c
index e5dc746f5358121d16af2e716d392736359fd294..a734dc8893d107cfbc9d011ad95e526edefe075d 100644
--- a/port/qio.c
+++ b/port/qio.c
@@ -371,8 +371,7 @@ checkb(b, "qconsume 2");
 int
 qpass(Queue *q, Block *b)
 {
-	int s, i, len;
-	int dowakeup;
+	int s, i, len, dowakeup;
 
 	s = splhi();
 
@@ -417,7 +416,7 @@ qpass(Queue *q, Block *b)
 		q->bfirst = b;
 	q->blast = b;
 	q->len += len;
-checkb(b, "qproduce");
+checkb(b, "qpass");
 
 	if(q->state & Qstarve){
 		q->state &= ~Qstarve;