inst.h

  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 __ASSEMBLER__
 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