diff options
Diffstat (limited to 'include/asm-x86/processor.h')
| -rw-r--r-- | include/asm-x86/processor.h | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/include/asm-x86/processor.h b/include/asm-x86/processor.h index bfac9739f57e..a8f1702ec3ba 100644 --- a/include/asm-x86/processor.h +++ b/include/asm-x86/processor.h @@ -592,6 +592,91 @@ extern int bootloader_type; extern char ignore_fpu_irq; #define cache_line_size() (boot_cpu_data.x86_cache_alignment) +/* generic versions from gas */ +#define GENERIC_NOP1 ".byte 0x90\n" +#define GENERIC_NOP2 ".byte 0x89,0xf6\n" +#define GENERIC_NOP3 ".byte 0x8d,0x76,0x00\n" +#define GENERIC_NOP4 ".byte 0x8d,0x74,0x26,0x00\n" +#define GENERIC_NOP5 GENERIC_NOP1 GENERIC_NOP4 +#define GENERIC_NOP6 ".byte 0x8d,0xb6,0x00,0x00,0x00,0x00\n" +#define GENERIC_NOP7 ".byte 0x8d,0xb4,0x26,0x00,0x00,0x00,0x00\n" +#define GENERIC_NOP8 GENERIC_NOP1 GENERIC_NOP7 + +/* Opteron nops */ +#define K8_NOP1 GENERIC_NOP1 +#define K8_NOP2 ".byte 0x66,0x90\n" +#define K8_NOP3 ".byte 0x66,0x66,0x90\n" +#define K8_NOP4 ".byte 0x66,0x66,0x66,0x90\n" +#define K8_NOP5 K8_NOP3 K8_NOP2 +#define K8_NOP6 K8_NOP3 K8_NOP3 +#define K8_NOP7 K8_NOP4 K8_NOP3 +#define K8_NOP8 K8_NOP4 K8_NOP4 + +/* K7 nops */ +/* uses eax dependencies (arbitary choice) */ +#define K7_NOP1 GENERIC_NOP1 +#define K7_NOP2 ".byte 0x8b,0xc0\n" +#define K7_NOP3 ".byte 0x8d,0x04,0x20\n" +#define K7_NOP4 ".byte 0x8d,0x44,0x20,0x00\n" +#define K7_NOP5 K7_NOP4 ASM_NOP1 +#define K7_NOP6 ".byte 0x8d,0x80,0,0,0,0\n" +#define K7_NOP7 ".byte 0x8D,0x04,0x05,0,0,0,0\n" +#define K7_NOP8 K7_NOP7 ASM_NOP1 + +/* P6 nops */ +/* uses eax dependencies (Intel-recommended choice) */ +#define P6_NOP1 GENERIC_NOP1 +#define P6_NOP2 ".byte 0x66,0x90\n" +#define P6_NOP3 ".byte 0x0f,0x1f,0x00\n" +#define P6_NOP4 ".byte 0x0f,0x1f,0x40,0\n" +#define P6_NOP5 ".byte 0x0f,0x1f,0x44,0x00,0\n" +#define P6_NOP6 ".byte 0x66,0x0f,0x1f,0x44,0x00,0\n" +#define P6_NOP7 ".byte 0x0f,0x1f,0x80,0,0,0,0\n" +#define P6_NOP8 ".byte 0x0f,0x1f,0x84,0x00,0,0,0,0\n" + +#ifdef CONFIG_MK7 +#define ASM_NOP1 K7_NOP1 +#define ASM_NOP2 K7_NOP2 +#define ASM_NOP3 K7_NOP3 +#define ASM_NOP4 K7_NOP4 +#define ASM_NOP5 K7_NOP5 +#define ASM_NOP6 K7_NOP6 +#define ASM_NOP7 K7_NOP7 +#define ASM_NOP8 K7_NOP8 +#elif defined(CONFIG_M686) || defined(CONFIG_MPENTIUMII) || \ + defined(CONFIG_MPENTIUMIII) || defined(CONFIG_MPENTIUMM) || \ + defined(CONFIG_MCORE2) || defined(CONFIG_PENTIUM4) || \ + defined(CONFIG_MPSC) +#define ASM_NOP1 P6_NOP1 +#define ASM_NOP2 P6_NOP2 +#define ASM_NOP3 P6_NOP3 +#define ASM_NOP4 P6_NOP4 +#define ASM_NOP5 P6_NOP5 +#define ASM_NOP6 P6_NOP6 +#define ASM_NOP7 P6_NOP7 +#define ASM_NOP8 P6_NOP8 +#elif defined(CONFIG_MK8) || defined(CONFIG_X86_64) +#define ASM_NOP1 K8_NOP1 +#define ASM_NOP2 K8_NOP2 +#define ASM_NOP3 K8_NOP3 +#define ASM_NOP4 K8_NOP4 +#define ASM_NOP5 K8_NOP5 +#define ASM_NOP6 K8_NOP6 +#define ASM_NOP7 K8_NOP7 +#define ASM_NOP8 K8_NOP8 +#else +#define ASM_NOP1 GENERIC_NOP1 +#define ASM_NOP2 GENERIC_NOP2 +#define ASM_NOP3 GENERIC_NOP3 +#define ASM_NOP4 GENERIC_NOP4 +#define ASM_NOP5 GENERIC_NOP5 +#define ASM_NOP6 GENERIC_NOP6 +#define ASM_NOP7 GENERIC_NOP7 +#define ASM_NOP8 GENERIC_NOP8 +#endif + +#define ASM_NOP_MAX 8 + #define HAVE_ARCH_PICK_MMAP_LAYOUT 1 #define ARCH_HAS_PREFETCHW #define ARCH_HAS_SPINLOCK_PREFETCH |
