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1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | /* | |
3 | * Generate .byte code for some instructions not supported by old | |
4 | * binutils. | |
5 | */ | |
6 | #ifndef X86_ASM_INST_H | |
7 | #define X86_ASM_INST_H | |
8 | ||
9 | #ifdef __ASSEMBLY__ | |
10 | ||
11 | #define REG_NUM_INVALID 100 | |
12 | ||
13 | #define REG_TYPE_R32 0 | |
14 | #define REG_TYPE_R64 1 | |
15 | #define REG_TYPE_INVALID 100 | |
16 | ||
17 | .macro R32_NUM opd r32 | |
18 | \opd = REG_NUM_INVALID | |
19 | .ifc \r32,%eax | |
20 | \opd = 0 | |
21 | .endif | |
22 | .ifc \r32,%ecx | |
23 | \opd = 1 | |
24 | .endif | |
25 | .ifc \r32,%edx | |
26 | \opd = 2 | |
27 | .endif | |
28 | .ifc \r32,%ebx | |
29 | \opd = 3 | |
30 | .endif | |
31 | .ifc \r32,%esp | |
32 | \opd = 4 | |
33 | .endif | |
34 | .ifc \r32,%ebp | |
35 | \opd = 5 | |
36 | .endif | |
37 | .ifc \r32,%esi | |
38 | \opd = 6 | |
39 | .endif | |
40 | .ifc \r32,%edi | |
41 | \opd = 7 | |
42 | .endif | |
43 | #ifdef CONFIG_X86_64 | |
44 | .ifc \r32,%r8d | |
45 | \opd = 8 | |
46 | .endif | |
47 | .ifc \r32,%r9d | |
48 | \opd = 9 | |
49 | .endif | |
50 | .ifc \r32,%r10d | |
51 | \opd = 10 | |
52 | .endif | |
53 | .ifc \r32,%r11d | |
54 | \opd = 11 | |
55 | .endif | |
56 | .ifc \r32,%r12d | |
57 | \opd = 12 | |
58 | .endif | |
59 | .ifc \r32,%r13d | |
60 | \opd = 13 | |
61 | .endif | |
62 | .ifc \r32,%r14d | |
63 | \opd = 14 | |
64 | .endif | |
65 | .ifc \r32,%r15d | |
66 | \opd = 15 | |
67 | .endif | |
68 | #endif | |
69 | .endm | |
70 | ||
71 | .macro R64_NUM opd r64 | |
72 | \opd = REG_NUM_INVALID | |
73 | #ifdef CONFIG_X86_64 | |
74 | .ifc \r64,%rax | |
75 | \opd = 0 | |
76 | .endif | |
77 | .ifc \r64,%rcx | |
78 | \opd = 1 | |
79 | .endif | |
80 | .ifc \r64,%rdx | |
81 | \opd = 2 | |
82 | .endif | |
83 | .ifc \r64,%rbx | |
84 | \opd = 3 | |
85 | .endif | |
86 | .ifc \r64,%rsp | |
87 | \opd = 4 | |
88 | .endif | |
89 | .ifc \r64,%rbp | |
90 | \opd = 5 | |
91 | .endif | |
92 | .ifc \r64,%rsi | |
93 | \opd = 6 | |
94 | .endif | |
95 | .ifc \r64,%rdi | |
96 | \opd = 7 | |
97 | .endif | |
98 | .ifc \r64,%r8 | |
99 | \opd = 8 | |
100 | .endif | |
101 | .ifc \r64,%r9 | |
102 | \opd = 9 | |
103 | .endif | |
104 | .ifc \r64,%r10 | |
105 | \opd = 10 | |
106 | .endif | |
107 | .ifc \r64,%r11 | |
108 | \opd = 11 | |
109 | .endif | |
110 | .ifc \r64,%r12 | |
111 | \opd = 12 | |
112 | .endif | |
113 | .ifc \r64,%r13 | |
114 | \opd = 13 | |
115 | .endif | |
116 | .ifc \r64,%r14 | |
117 | \opd = 14 | |
118 | .endif | |
119 | .ifc \r64,%r15 | |
120 | \opd = 15 | |
121 | .endif | |
122 | #endif | |
123 | .endm | |
124 | ||
125 | .macro REG_TYPE type reg | |
126 | R32_NUM reg_type_r32 \reg | |
127 | R64_NUM reg_type_r64 \reg | |
128 | .if reg_type_r64 <> REG_NUM_INVALID | |
129 | \type = REG_TYPE_R64 | |
130 | .elseif reg_type_r32 <> REG_NUM_INVALID | |
131 | \type = REG_TYPE_R32 | |
132 | .else | |
133 | \type = REG_TYPE_INVALID | |
134 | .endif | |
135 | .endm | |
136 | ||
137 | .macro PFX_REX opd1 opd2 W=0 | |
138 | .if ((\opd1 | \opd2) & 8) || \W | |
139 | .byte 0x40 | ((\opd1 & 8) >> 3) | ((\opd2 & 8) >> 1) | (\W << 3) | |
140 | .endif | |
141 | .endm | |
142 | ||
143 | .macro MODRM mod opd1 opd2 | |
144 | .byte \mod | (\opd1 & 7) | ((\opd2 & 7) << 3) | |
145 | .endm | |
146 | #endif | |
147 | ||
148 | #endif |