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| author | Pekka Enberg <penberg@cs.helsinki.fi> | 2009-02-26 12:23:52 +0300 |
|---|---|---|
| committer | Vegard Nossum <vegard.nossum@gmail.com> | 2009-06-15 14:39:59 +0400 |
| commit | 6d9609c13250631c1d0c55a29a64d5687fd91293 (patch) | |
| tree | f925b5dfb2c250e6de98b3e1f880149324bb99a1 /arch/x86/mm/kmemcheck/opcode.c | |
| parent | 0c33cacd8672ef034ba414510f71ea2bd9370111 (diff) | |
| download | linux-6d9609c13250631c1d0c55a29a64d5687fd91293.tar.xz | |
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: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Vegard Nossum <vegard.nossum@gmail.com>
Diffstat (limited to 'arch/x86/mm/kmemcheck/opcode.c')
| -rw-r--r-- | arch/x86/mm/kmemcheck/opcode.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/arch/x86/mm/kmemcheck/opcode.c b/arch/x86/mm/kmemcheck/opcode.c index a4100b6e783a..63c19e27aa6f 100644 --- a/arch/x86/mm/kmemcheck/opcode.c +++ b/arch/x86/mm/kmemcheck/opcode.c @@ -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) { |