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
149