x86: unify asm nops

[cascardo/linux.git] / include / asm-x86 / processor.h

diff --git a/include/asm-x86/processor.h b/include/asm-x86/processor.h
index bfac973..a8f1702 100644 (file)
--- 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