提交 6d9609c1 编写于 作者: P Pekka Enberg 提交者: Vegard Nossum

kmemcheck: move 64-bit ifdef out of kmemcheck_opcode_decode()

This patch moves the CONFIG_X86_64 ifdef out of kmemcheck_opcode_decode() by
introducing a version of the function that always returns false for
CONFIG_X86_32.
Signed-off-by: NPekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: NVegard Nossum <vegard.nossum@gmail.com>
上级 0c33cacd
......@@ -16,10 +16,17 @@ static bool opcode_is_prefix(uint8_t b)
|| b == 0x67;
}
#ifdef CONFIG_X86_64
static bool opcode_is_rex_prefix(uint8_t b)
{
return (b & 0xf0) == 0x40;
}
#else
static bool opcode_is_rex_prefix(uint8_t b)
{
return false;
}
#endif
#define REX_W (1 << 3)
......@@ -40,7 +47,6 @@ void kmemcheck_opcode_decode(const uint8_t *op, unsigned int *size)
operand_size_override = 2;
}
#ifdef CONFIG_X86_64
/* REX prefix */
if (opcode_is_rex_prefix(*op)) {
uint8_t rex = *op;
......@@ -72,7 +78,6 @@ void kmemcheck_opcode_decode(const uint8_t *op, unsigned int *size)
return;
}
}
#endif
/* escape opcode */
if (*op == 0x0f) {
......
Markdown is supported
0% .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑!
想要评论请 注册