#ifndef _ASM_X86_NOPS_H

#define _ASM_X86_NOPS_H

/* Define nops for use with alternative() */

/* generic versions from gas

   1: nop

   the following instructions are NOT nops in 64-bit mode,

   for 64-bit mode use K8 or P6 nops instead

   2: movl %esi,%esi

   3: leal 0x00(%esi),%esi

   4: leal 0x00(,%esi,1),%esi

   6: leal 0x00000000(%esi),%esi

   7: leal 0x00000000(,%esi,1),%esi

*/

#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 64bit nops

   1: nop

   2: osp nop

   3: osp osp nop

   4: osp osp osp nop

*/

#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)

   1: nop

   2: movl %eax,%eax

   3: leal (,%eax,1),%eax

   4: leal 0x00(,%eax,1),%eax

   6: leal 0x00000000(%eax),%eax

   7: leal 0x00000000(,%eax,1),%eax

*/

#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)

   1: nop

   2: osp nop

   3: nopl (%eax)

   4: nopl 0x00(%eax)

   5: nopl 0x00(%eax,%eax,1)

   6: osp nopl 0x00(%eax,%eax,1)

   7: nopl 0x00000000(%eax)

   8: nopl 0x00000000(%eax,%eax,1)

*/

#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"

#if defined(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_X86_P6_NOP)

#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_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

#endif /* _ASM_X86_NOPS_H */