From f02f05ca6a7a60a087a9fb7d6b2e81ff820e2d80 Mon Sep 17 00:00:00 2001
From: cinap_lenrek <cinap_lenrek@felloff.net>
Date: Tue, 15 Apr 2014 00:37:01 +0200
Subject: [PATCH] libmach: fix printing of amd64 modrm byte register with rex
 prefix

---
 sys/src/libmach/8db.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sys/src/libmach/8db.c b/sys/src/libmach/8db.c
index 94d731655..e658a4154 100644
--- a/sys/src/libmach/8db.c
+++ b/sys/src/libmach/8db.c
@@ -1878,7 +1878,7 @@ pea(Instr *ip)
 {
 	if (ip->mod == 3) {
 		if (ip->osize == 'B')
-			bprint(ip, (ip->rex & REXB? breg64: breg)[ip->base]);
+			bprint(ip, (ip->rex? breg64: breg)[ip->rex&REXB? ip->base+8: ip->base]);
 		else if(ip->rex & REXB)
 			bprint(ip, "%s%s", ANAME(ip), reg[ip->base+8]);
 		else