lkml.org 
[lkml]   [2010]   [Aug]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 4/7] arch/x86/mm/kmemcheck: Remove double test
Date
The opcodes 0x2e and 0x3e are tested for in the first Group 2 line as well.

The sematic match that finds this problem is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@expression@
expression E;
@@

(
* E
|| ... || E
* E
&& ... && E
)
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>

---
This is a guess as to what the code should be. Perhaps something else
should have been tested instead.
arch/x86/mm/kmemcheck/opcode.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/mm/kmemcheck/opcode.c b/arch/x86/mm/kmemcheck/opcode.c
index 63c19e2..324aa3f 100644
--- a/arch/x86/mm/kmemcheck/opcode.c
+++ b/arch/x86/mm/kmemcheck/opcode.c
@@ -9,7 +9,7 @@ static bool opcode_is_prefix(uint8_t b)
b == 0xf0 || b == 0xf2 || b == 0xf3
/* Group 2 */
|| b == 0x2e || b == 0x36 || b == 0x3e || b == 0x26
- || b == 0x64 || b == 0x65 || b == 0x2e || b == 0x3e
+ || b == 0x64 || b == 0x65
/* Group 3 */
|| b == 0x66
/* Group 4 */


\
 
 \ /
  Last update: 2010-08-28 17:43    [from the cache]
©2003-2011 Jasper Spaans