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1 | #ifndef _ASM_NOPS_H |
2 | #define _ASM_NOPS_H 1 | |
3 | ||
4 | /* Define nops for use with alternative() */ | |
5 | ||
6 | /* generic versions from gas */ | |
7 | #define GENERIC_NOP1 ".byte 0x90\n" | |
8 | #define GENERIC_NOP2 ".byte 0x89,0xf6\n" | |
9 | #define GENERIC_NOP3 ".byte 0x8d,0x76,0x00\n" | |
10 | #define GENERIC_NOP4 ".byte 0x8d,0x74,0x26,0x00\n" | |
11 | #define GENERIC_NOP5 GENERIC_NOP1 GENERIC_NOP4 | |
12 | #define GENERIC_NOP6 ".byte 0x8d,0xb6,0x00,0x00,0x00,0x00\n" | |
13 | #define GENERIC_NOP7 ".byte 0x8d,0xb4,0x26,0x00,0x00,0x00,0x00\n" | |
14 | #define GENERIC_NOP8 GENERIC_NOP1 GENERIC_NOP7 | |
15 | ||
16 | /* Opteron 64bit nops */ | |
17 | #define K8_NOP1 GENERIC_NOP1 | |
18 | #define K8_NOP2 ".byte 0x66,0x90\n" | |
19 | #define K8_NOP3 ".byte 0x66,0x66,0x90\n" | |
20 | #define K8_NOP4 ".byte 0x66,0x66,0x66,0x90\n" | |
21 | #define K8_NOP5 K8_NOP3 K8_NOP2 | |
22 | #define K8_NOP6 K8_NOP3 K8_NOP3 | |
23 | #define K8_NOP7 K8_NOP4 K8_NOP3 | |
24 | #define K8_NOP8 K8_NOP4 K8_NOP4 | |
25 | ||
26 | /* K7 nops */ | |
27 | /* uses eax dependencies (arbitary choice) */ | |
28 | #define K7_NOP1 GENERIC_NOP1 | |
29 | #define K7_NOP2 ".byte 0x8b,0xc0\n" | |
30 | #define K7_NOP3 ".byte 0x8d,0x04,0x20\n" | |
31 | #define K7_NOP4 ".byte 0x8d,0x44,0x20,0x00\n" | |
32 | #define K7_NOP5 K7_NOP4 ASM_NOP1 | |
33 | #define K7_NOP6 ".byte 0x8d,0x80,0,0,0,0\n" | |
34 | #define K7_NOP7 ".byte 0x8D,0x04,0x05,0,0,0,0\n" | |
35 | #define K7_NOP8 K7_NOP7 ASM_NOP1 | |
36 | ||
37 | /* P6 nops */ | |
38 | /* uses eax dependencies (Intel-recommended choice) */ | |
39 | #define P6_NOP1 GENERIC_NOP1 | |
40 | #define P6_NOP2 ".byte 0x66,0x90\n" | |
41 | #define P6_NOP3 ".byte 0x0f,0x1f,0x00\n" | |
42 | #define P6_NOP4 ".byte 0x0f,0x1f,0x40,0\n" | |
43 | #define P6_NOP5 ".byte 0x0f,0x1f,0x44,0x00,0\n" | |
44 | #define P6_NOP6 ".byte 0x66,0x0f,0x1f,0x44,0x00,0\n" | |
45 | #define P6_NOP7 ".byte 0x0f,0x1f,0x80,0,0,0,0\n" | |
46 | #define P6_NOP8 ".byte 0x0f,0x1f,0x84,0x00,0,0,0,0\n" | |
47 | ||
48 | #if defined(CONFIG_MK8) | |
49 | #define ASM_NOP1 K8_NOP1 | |
50 | #define ASM_NOP2 K8_NOP2 | |
51 | #define ASM_NOP3 K8_NOP3 | |
52 | #define ASM_NOP4 K8_NOP4 | |
53 | #define ASM_NOP5 K8_NOP5 | |
54 | #define ASM_NOP6 K8_NOP6 | |
55 | #define ASM_NOP7 K8_NOP7 | |
56 | #define ASM_NOP8 K8_NOP8 | |
57 | #elif defined(CONFIG_MK7) | |
58 | #define ASM_NOP1 K7_NOP1 | |
59 | #define ASM_NOP2 K7_NOP2 | |
60 | #define ASM_NOP3 K7_NOP3 | |
61 | #define ASM_NOP4 K7_NOP4 | |
62 | #define ASM_NOP5 K7_NOP5 | |
63 | #define ASM_NOP6 K7_NOP6 | |
64 | #define ASM_NOP7 K7_NOP7 | |
65 | #define ASM_NOP8 K7_NOP8 | |
66 | #elif defined(CONFIG_M686) || defined(CONFIG_MPENTIUMII) || \ | |
67 | defined(CONFIG_MPENTIUMIII) || defined(CONFIG_MPENTIUMM) || \ | |
68 | defined(CONFIG_MCORE2) || defined(CONFIG_PENTIUM4) | |
69 | #define ASM_NOP1 P6_NOP1 | |
70 | #define ASM_NOP2 P6_NOP2 | |
71 | #define ASM_NOP3 P6_NOP3 | |
72 | #define ASM_NOP4 P6_NOP4 | |
73 | #define ASM_NOP5 P6_NOP5 | |
74 | #define ASM_NOP6 P6_NOP6 | |
75 | #define ASM_NOP7 P6_NOP7 | |
76 | #define ASM_NOP8 P6_NOP8 | |
77 | #else | |
78 | #define ASM_NOP1 GENERIC_NOP1 | |
79 | #define ASM_NOP2 GENERIC_NOP2 | |
80 | #define ASM_NOP3 GENERIC_NOP3 | |
81 | #define ASM_NOP4 GENERIC_NOP4 | |
82 | #define ASM_NOP5 GENERIC_NOP5 | |
83 | #define ASM_NOP6 GENERIC_NOP6 | |
84 | #define ASM_NOP7 GENERIC_NOP7 | |
85 | #define ASM_NOP8 GENERIC_NOP8 | |
86 | #endif | |
87 | ||
88 | #define ASM_NOP_MAX 8 | |
89 | ||
90 | #endif |