From 6cc6b88d003391198ccbf8a8334a00d479645d34 Mon Sep 17 00:00:00 2001
From: David du Colombier <0intro@gmail.com>
Date: Sat, 26 Mar 1994 00:00:00 +0000
Subject: [PATCH] Plan 9 from Bell Labs 1994-03-26

---
 carrera/trap.c | 17 ++++-------------
 1 file changed, 4 insertions(+), 13 deletions(-)

diff --git a/carrera/trap.c b/carrera/trap.c
index 3f95c7a8e6f99262ac51bee14590c84fa15cac8c..cdd54a99d3e7d3d309e962dced763856a236e11e 100644
--- a/carrera/trap.c
+++ b/carrera/trap.c
@@ -102,8 +102,6 @@ ptlb(ulong phys)
 	return buf[k];
 }
 
-ulong *XDBG = (ulong*)0x80020018;
-
 static void
 kpteprint(Ureg *ur)
 {
@@ -273,20 +271,16 @@ trap(Ureg *ur)
 		}
 	}
 
-XDBG[0] = 7;
 	splhi();
 	if(!user)
 		return;
-XDBG[0] = 8;
 
 	notify(ur);
-XDBG[0] = 9;
 	if(up->fpstate == FPinactive) {
 		restfpregs(&up->fpsave, up->fpsave.fpstatus&~FPEXPMASK);
 		up->fpstate = FPactive;
 		ur->status |= CU1;
 	}
-XDBG[0] = 10;
 }
 
 void
@@ -296,11 +290,9 @@ intr(Ureg *ur)
 	ulong cause = ur->cause;
 	ulong isr, vec;
 
-XDBG[0] = 0;
 	m->intr++;
 	cause &= INTR7|INTR6|INTR5|INTR4|INTR3|INTR2|INTR1|INTR0;
 
-XDBG[0] = 1;
 	if(cause & INTR3) {
 		devint = IO(uchar, Intcause);
 		switch(devint) {
@@ -327,7 +319,7 @@ XDBG[0] = 1;
 		}
 		cause &= ~INTR3;
 	}
-XDBG[0] = 2;
+
 	if(cause & INTR2) {
 		isr = IO(ulong, R4030Isr);
 		if(isr) {
@@ -339,7 +331,7 @@ XDBG[0] = 2;
 		}
 		cause &= ~INTR2;
 	}
-XDBG[0] = 3;
+
 	if(cause & INTR4) {
 		devint = IO(uchar, I386ack);
 		vec = devint&~0x7;
@@ -364,17 +356,16 @@ XDBG[0] = 3;
 		}
 		cause &= ~INTR4;
 	}
-XDBG[0] = 4;
+
 	if(cause & INTR7) {
 		clock(ur);
 		cause &= ~INTR7;
 	}
-XDBG[0] = 5;
+
 	if(cause) {
 		iprint("cause %lux\n", cause);
 		exit(1);
 	}
-XDBG[0] = 6;
 }
 
 char*