From b1913c0415eac25f689bc927096c754744c2a517 Mon Sep 17 00:00:00 2001
From: David du Colombier <0intro@gmail.com>
Date: Sat, 21 May 1994 00:00:00 +0000
Subject: [PATCH] Plan 9 from Bell Labs 1994-05-21

---
 carrera/screen.c | 19 -------------------
 pc/devvga.c      | 12 +++++-------
 pc/fault386.c    |  7 +++++--
 pc/main.c        |  2 +-
 port/devmouse.c  | 23 +++++++++++------------
 5 files changed, 22 insertions(+), 41 deletions(-)

diff --git a/carrera/screen.c b/carrera/screen.c
index 9f1f11d8dfa8de6f5305af7b79a398418a0a80a8..7dd2b5238b36c296c052fdc7e06e3c437fca477c 100644
--- a/carrera/screen.c
+++ b/carrera/screen.c
@@ -76,26 +76,9 @@ Bitmap bgrnd =
 	0
 };
 
-Cursor fatarrow = {
-	{ -1, -1 },
-	{
-		0xff, 0xff, 0x80, 0x01, 0x80, 0x02, 0x80, 0x0c, 
-		0x80, 0x10, 0x80, 0x10, 0x80, 0x08, 0x80, 0x04, 
-		0x80, 0x02, 0x80, 0x01, 0x80, 0x02, 0x8c, 0x04, 
-		0x92, 0x08, 0x91, 0x10, 0xa0, 0xa0, 0xc0, 0x40, 
-	},
-	{
-		0x00, 0x00, 0x7f, 0xfe, 0x7f, 0xfc, 0x7f, 0xf0, 
-		0x7f, 0xe0, 0x7f, 0xe0, 0x7f, 0xf0, 0x7f, 0xf8, 
-		0x7f, 0xfc, 0x7f, 0xfe, 0x7f, 0xfc, 0x73, 0xf8, 
-		0x61, 0xf0, 0x60, 0xe0, 0x40, 0x40, 0x00, 0x00, 
-	},
-};
-
 static Rectangle window;
 static Point curpos;
 static int h, w;
-extern Cursor arrow;
 
 void
 screenwin(void)
@@ -221,8 +204,6 @@ screeninit(void)
 
 	dacinit();
 
-	memmove(&arrow, &fatarrow, sizeof(fatarrow));
-
 	bitblt(&gscreen, Pt(0, 0), &gscreen, gscreen.r, 0);
 	out.pos.x = MINX;
 	out.pos.y = 0;
diff --git a/pc/devvga.c b/pc/devvga.c
index 03ccde15adfc869869831c54ac8984e91835cb5e..6a5fa5f876510c82a1afc7e27c86dd82313beb93 100644
--- a/pc/devvga.c
+++ b/pc/devvga.c
@@ -1268,7 +1268,9 @@ setcolor(ulong p, ulong r, ulong g, ulong b)
 /*
  *  area to store the bits that are behind the cursor
  */
-ulong backbits[16*4];
+static ulong backbits[16*4];
+static ulong clrbits[16];
+static ulong setbits[16];
 
 /*
  *  the white border around the cursor
@@ -1278,7 +1280,7 @@ Bitmap	clr =
 	{0, 0, 16, 16},
 	{0, 0, 16, 16},
 	0,
-	0,
+	clrbits,
 	0,
 	1,
 };
@@ -1291,7 +1293,7 @@ Bitmap	set =
 	{0, 0, 16, 16},
 	{0, 0, 16, 16},
 	0,
-	0,
+	setbits,
 	0,
 	1,
 };
@@ -1307,10 +1309,6 @@ cursorinit(void)
 	cursor.l = cursorwork.width*BY2WD;
 
 	if(!already){
-		set.base = malloc(16*sizeof(ulong));
-		clr.base = malloc(16*sizeof(ulong));
-		if(set.base == 0 || clr.base == 0)
-			panic("cursorinit");
 		cursor.disable--;
 		already = 1;
 	}
diff --git a/pc/fault386.c b/pc/fault386.c
index 1bb9beb52fcf7e7a242a80daa8f78bf68a82f89b..7580082537bd3f8d2e82bcc656484521b6eaa139 100644
--- a/pc/fault386.c
+++ b/pc/fault386.c
@@ -18,13 +18,17 @@ fault386(Ureg *ur, void *arg)
 
 	USED(arg);
 
+	if(up == 0){
+		dumpregs(ur);
+		for(;;);
+	}
+
 	insyscall = up->insyscall;
 	up->insyscall = 1;
 	addr = getcr2();
 	read = !(ur->ecode & 2);
 	user = (ur->cs&0xffff) == UESEL;
 	spllo();
-/*print("F%d:A#%lux:U%d:R%d|", up->pid, addr, user, read);/**/
 	n = fault(addr, read);
 	if(n < 0){
 		if(user){
@@ -33,7 +37,6 @@ fault386(Ureg *ur, void *arg)
 			postnote(up, 1, buf, NDebug);
 			return;
 		}
-print("fault: 0x%lux", addr);
 		dumpregs(ur);
 		panic("fault: 0x%lux", addr);
 	}
diff --git a/pc/main.c b/pc/main.c
index 7139b0e49545096d749c12cda7d6b7730da692ba..dddc11e8cc313ae6b2ec2005349ef64cf5837cc9 100644
--- a/pc/main.c
+++ b/pc/main.c
@@ -67,7 +67,7 @@ main(void)
 
 /*
  *  This tries to capture architecture dependencies since things
- *  like power management/reseting/mouse are outside the hardware
+ *  like power management/resetting/mouse are outside the hardware
  *  model.
  */
 void
diff --git a/port/devmouse.c b/port/devmouse.c
index a0a35f33c891229a9bd2f22ca0186cec1564e28f..d1fa22d50484d7cd6321a7b48f2819ba7053094d 100644
--- a/port/devmouse.c
+++ b/port/devmouse.c
@@ -36,19 +36,18 @@ int		mousetype;
 int		mouseswap;
 Cursor		curs;
 
-Cursor	arrow =
-{
-	{-1, -1},
-	{0xFF, 0xE0, 0xFF, 0xE0, 0xFF, 0xC0, 0xFF, 0x00,
-	 0xFF, 0x00, 0xFF, 0x80, 0xFF, 0xC0, 0xFF, 0xE0,
-	 0xE7, 0xF0, 0xE3, 0xF8, 0xC1, 0xFC, 0x00, 0xFE,
-	 0x00, 0x7F, 0x00, 0x3E, 0x00, 0x1C, 0x00, 0x08,
+Cursor	arrow = {
+	{ -1, -1 },
+	{ 0xFF, 0xFF, 0x80, 0x01, 0x80, 0x02, 0x80, 0x0C, 
+	  0x80, 0x10, 0x80, 0x10, 0x80, 0x08, 0x80, 0x04, 
+	  0x80, 0x02, 0x80, 0x01, 0x80, 0x02, 0x8C, 0x04, 
+	  0x92, 0x08, 0x91, 0x10, 0xA0, 0xA0, 0xC0, 0x40, 
+	},
+	{ 0x00, 0x00, 0x7F, 0xFE, 0x7F, 0xFC, 0x7F, 0xF0, 
+	  0x7F, 0xE0, 0x7F, 0xE0, 0x7F, 0xF0, 0x7F, 0xF8, 
+	  0x7F, 0xFC, 0x7F, 0xFE, 0x7F, 0xFC, 0x73, 0xF8, 
+	  0x61, 0xF0, 0x60, 0xE0, 0x40, 0x40, 0x00, 0x00, 
 	},
-	{0x00, 0x00, 0x7F, 0xC0, 0x7F, 0x00, 0x7C, 0x00,
-	 0x7E, 0x00, 0x7F, 0x00, 0x6F, 0x80, 0x67, 0xC0,
-	 0x43, 0xE0, 0x41, 0xF0, 0x00, 0xF8, 0x00, 0x7C,
-	 0x00, 0x3E, 0x00, 0x1C, 0x00, 0x08, 0x00, 0x00,
-	}
 };
 
 void	Cursortocursor(Cursor*);