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-rw-r--r--sys/src/libmach/8db.c2
1 files changed, 1 insertions, 1 deletions
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