1 files changed, 36 insertions, 10 deletions

diff --git a/utils/8l/span.c b/utils/8l/span.c
index 67ec929b..729ae8df 100644
--- a/utils/8l/span.c
+++ b/utils/8l/span.c
@@ -236,12 +236,12 @@ asmlc(void)
 		if(p->line == oldlc || p->as == ATEXT || p->as == ANOP) {
 			if(p->as == ATEXT)
 				curtext = p;
-			if(debug['L'])
+			if(debug['V'])
 				Bprint(&bso, "%6lux %P\n",
 					p->pc, p);
 			continue;
 		}
-		if(debug['L'])
+		if(debug['V'])
 			Bprint(&bso, "\t\t%6ld", lcsize);
 		v = (p->pc - oldpc) / MINLC;
 		while(v) {
@@ -249,7 +249,7 @@ asmlc(void)
 			if(v < 127)
 				s = v;
 			cput(s+128);	/* 129-255 +pc */
-			if(debug['L'])
+			if(debug['V'])
 				Bprint(&bso, " pc+%ld*%d(%ld)", s, MINLC, s+128);
 			v -= s;
 			lcsize++;
@@ -263,7 +263,7 @@ asmlc(void)
 			cput(s>>16);
 			cput(s>>8);
 			cput(s);
-			if(debug['L']) {
+			if(debug['V']) {
 				if(s > 0)
 					Bprint(&bso, " lc+%ld(%d,%ld)\n",
 						s, 0, s);
@@ -278,14 +278,14 @@ asmlc(void)
 		}
 		if(s > 0) {
 			cput(0+s);	/* 1-64 +lc */
-			if(debug['L']) {
+			if(debug['V']) {
 				Bprint(&bso, " lc+%ld(%ld)\n", s, 0+s);
 				Bprint(&bso, "%6lux %P\n",
 					p->pc, p);
 			}
 		} else {
 			cput(64-s);	/* 65-128 -lc */
-			if(debug['L']) {
+			if(debug['V']) {
 				Bprint(&bso, " lc%ld(%ld)\n", s, 64-s);
 				Bprint(&bso, "%6lux %P\n",
 					p->pc, p);
@@ -298,12 +298,30 @@ asmlc(void)
 		cput(s);
 		lcsize++;
 	}
-	if(debug['v'] || debug['L'])
+	if(debug['v'] || debug['V'])
 		Bprint(&bso, "lcsize = %ld\n", lcsize);
 	Bflush(&bso);
 }
 
 int
+prefixof(Adr *a)
+{
+	switch(a->type) {
+	case D_INDIR+D_CS:
+		return 0x2e;
+	case D_INDIR+D_DS:
+		return 0x3e;
+	case D_INDIR+D_ES:
+		return 0x26;
+	case D_INDIR+D_FS:
+		return 0x64;
+	case D_INDIR+D_GS:
+		return 0x65;
+	}
+	return 0;
+}
+
+int
 oclass(Adr *a)
 {
 	long v;
@@ -608,7 +626,7 @@ asmand(Adr *a, int r)
 	}
 	if(t >= D_INDIR) {
 		t -= D_INDIR;
-		if(t == D_NONE) {
+		if(t == D_NONE || D_CS <= t && t <= D_GS) {
 			*andptr++ = (0 << 6) | (5 << 0) | (r << 3);
 			put4(v);
 			return;
@@ -769,6 +787,7 @@ uchar	ymovtab[] =
 	ASHRL,	Ycol,	Yml,	6,	0xac,0xad,0,0,
 
 /* extra imul */
+	AIMULW,	Yml,	Yrl,	7,	Pq,0xaf,0,0,
 	AIMULL,	Yml,	Yrl,	7,	Pm,0xaf,0,0,
 	0
 };
@@ -823,7 +842,14 @@ doasm(Prog *p)
 	Prog *q, pp;
 	uchar *t;
 	int z, op, ft, tt;
-	long v;
+	long v, pre;
+
+	pre = prefixof(&p->from);
+	if(pre)
+		*andptr++ = pre;
+	pre = prefixof(&p->to);
+	if(pre)
+		*andptr++ = pre;
 
 	o = &optab[p->as];
 	ft = oclass(&p->from) * Ymax;
@@ -1063,7 +1089,7 @@ found:
 		q = p->pcond;
 		if(q) {
 			v = q->pc - p->pc - 2;
-			if(v < -128 && v > 127)
+			if(v < -128 || v > 127)
 				diag("loop too far: %P", p);
 			*andptr++ = op;
 			*andptr++ = v;