From: malc <av1474@comtv.ru>
To: qemu-devel@nongnu.org
Cc: Brad Spengler <spender@grsecurity.net>
Subject: [Qemu-devel] [RFC][PATCH] x86_64: Fix long jumps/calls in long mode with REX.W set
Date: Thu, 4 Mar 2010 15:09:26 +0300 (MSK) [thread overview]
Message-ID: <alpine.LNX.2.00.1003041508540.3806@linmac> (raw)
Signed-off-by: malc <av1474@comtv.ru>
---
target-i386/translate.c | 4 +---
1 files changed, 1 insertions(+), 3 deletions(-)
diff --git a/target-i386/translate.c b/target-i386/translate.c
index a597e80..68e6df9 100644
--- a/target-i386/translate.c
+++ b/target-i386/translate.c
@@ -4589,9 +4589,7 @@ static target_ulong disas_insn(DisasContext *s,
target_ulong pc_start)
/* operand size for jumps is 64 bit */
ot = OT_QUAD;
} else if (op == 3 || op == 5) {
- /* for call calls, the operand is 16 or 32 bit, even
- in long mode */
- ot = dflag ? OT_LONG : OT_WORD;
+ ot = dflag ? OT_LONG + (rex_w == 1) : OT_WORD;
} else if (op == 6) {
/* default push size is 64 bit */
ot = dflag ? OT_QUAD : OT_WORD;
--
1.6.6.1
--
mailto:av1474@comtv.ru
next reply other threads:[~2010-03-04 12:09 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-04 12:09 malc [this message]
2010-03-04 13:03 ` [Qemu-devel] [RFC][PATCH] x86_64: Fix long jumps/calls in long mode with REX.W set malc
2010-03-06 18:21 ` Aurelien Jarno
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