From 6ff3b06fdbfaf75221bc599755a9c8380508dc0d Mon Sep 17 00:00:00 2001
From: David du Colombier <0intro@gmail.com>
Date: Tue, 27 Jul 1993 00:00:00 +0000
Subject: [PATCH] Plan 9 from Bell Labs 1993-07-27

---
 port/fault.c   | 29 +++++++++++++++++++++++++++++
 port/portdat.h |  3 ++-
 port/qio.c     |  1 -
 port/sysproc.c |  3 +--
 4 files changed, 32 insertions(+), 4 deletions(-)

diff --git a/port/fault.c b/port/fault.c
index 747604620ec8f50ab47dfbe27eb74787d63ff93a..f7f3e17cc17409f230b2d4e03d93c1915a44cc49 100644
--- a/port/fault.c
+++ b/port/fault.c
@@ -7,6 +7,35 @@
 
 void	faulterror(char*);
 
+ulong
+getpte(ulong addr)
+{
+	Pte **p, *etp;
+	Segment *s;
+	Page **pg;
+	ulong soff;
+
+	s = seg(up, addr, 1);
+	if(s == 0)
+		return -1;
+
+	addr &= ~(BY2PG-1);
+	soff = addr-s->base;
+	p = &s->map[soff/PTEMAPMEM];
+	if(*p == 0) {
+		qunlock(&s->lk);
+		return -1;
+	}
+	etp = *p;
+	pg = &etp->pages[(soff&(PTEMAPMEM-1))/BY2PG];
+	if(*pg == 0) {
+		qunlock(&s->lk);
+		return -1;
+	}
+	qunlock(&s->lk);
+	return (*pg)->pa;
+}
+
 int
 fault(ulong addr, int read)
 {
diff --git a/port/portdat.h b/port/portdat.h
index ebd998d7f63ef666f089e78720182fd42f58ea73..b60e486a8cf35c3ed8d9e6d41e55a27edc4e082d 100644
--- a/port/portdat.h
+++ b/port/portdat.h
@@ -599,7 +599,8 @@ struct Proc
 	void	*dbgreg;	/* User registers for devproc */
 	ulong	svstatus;
 	ulong	svr1;
-
+int entpc;
+int entr31;
 	/*
 	 *  machine specific MMU
 	 */
diff --git a/port/qio.c b/port/qio.c
index f7a366f589f2b1833fb889d9f1dbcef2da959745..1dc7481033a81366d158d24c9a00789e9d0a051a 100644
--- a/port/qio.c
+++ b/port/qio.c
@@ -407,7 +407,6 @@ qread(Queue *q, void *vp, int len)
 		if(q->state & Qclosed){
 			unlock(q);
 			splx(x);
-print("Qclosed %lux\n", q);
 			return 0;
 		}
 
diff --git a/port/sysproc.c b/port/sysproc.c
index f8bcc3ae3af654b1d3a1751e3f109e0f9424bc71..aeb43a1c3258a53e0e8693458b25285ee6437940 100644
--- a/port/sysproc.c
+++ b/port/sysproc.c
@@ -294,7 +294,7 @@ sysexec(ulong *arg)
 	if((ssize+4) & 7)
 		ssize += 4;
 	spage = (ssize+(BY2PG-1)) >> PGSHIFT;
-print("ssize %d spage %lux\n", ssize, spage);
+
 	/*
 	 * Build the stack segment, putting it in kernel virtual for the moment
 	 */
@@ -319,7 +319,6 @@ print("ssize %d spage %lux\n", ssize, spage);
 			argp = (char**)arg[1];
 		}
 		*argv++ = charp + (USTKTOP-TSTKTOP);
-print("arg[%d] %s\n", i, *argp);
 		n = strlen(*argp) + 1;
 		memmove(charp, *argp++, n);
 		charp += n;