/* SPDX-License-Identifier: GPL-2.0 */ | |
/* | |
* Generate .byte code for some instructions not supported by old | |
* binutils. | |
*/ | |
#ifndef X86_ASM_INST_H | |
#define X86_ASM_INST_H | |
#ifdef __ASSEMBLY__ | |
#define REG_NUM_INVALID 100 | |
#define REG_TYPE_R32 0 | |
#define REG_TYPE_R64 1 | |
#define REG_TYPE_INVALID 100 | |
.macro R32_NUM opd r32 | |
\opd = REG_NUM_INVALID | |
.ifc \r32,%eax | |
\opd = 0 | |
.endif | |
.ifc \r32,%ecx | |
\opd = 1 | |
.endif | |
.ifc \r32,%edx | |
\opd = 2 | |
.endif | |
.ifc \r32,%ebx | |
\opd = 3 | |
.endif | |
.ifc \r32,%esp | |
\opd = 4 | |
.endif | |
.ifc \r32,%ebp | |
\opd = 5 | |
.endif | |
.ifc \r32,%esi | |
\opd = 6 | |
.endif | |
.ifc \r32,%edi | |
\opd = 7 | |
.endif | |
#ifdef CONFIG_X86_64 | |
.ifc \r32,%r8d | |
\opd = 8 | |
.endif | |
.ifc \r32,%r9d | |
\opd = 9 | |
.endif | |
.ifc \r32,%r10d | |
\opd = 10 | |
.endif | |
.ifc \r32,%r11d | |
\opd = 11 | |
.endif | |
.ifc \r32,%r12d | |
\opd = 12 | |
.endif | |
.ifc \r32,%r13d | |
\opd = 13 | |
.endif | |
.ifc \r32,%r14d | |
\opd = 14 | |
.endif | |
.ifc \r32,%r15d | |
\opd = 15 | |
.endif | |
#endif | |
.endm | |
.macro R64_NUM opd r64 | |
\opd = REG_NUM_INVALID | |
#ifdef CONFIG_X86_64 | |
.ifc \r64,%rax | |
\opd = 0 | |
.endif | |
.ifc \r64,%rcx | |
\opd = 1 | |
.endif | |
.ifc \r64,%rdx | |
\opd = 2 | |
.endif | |
.ifc \r64,%rbx | |
\opd = 3 | |
.endif | |
.ifc \r64,%rsp | |
\opd = 4 | |
.endif | |
.ifc \r64,%rbp | |
\opd = 5 | |
.endif | |
.ifc \r64,%rsi | |
\opd = 6 | |
.endif | |
.ifc \r64,%rdi | |
\opd = 7 | |
.endif | |
.ifc \r64,%r8 | |
\opd = 8 | |
.endif | |
.ifc \r64,%r9 | |
\opd = 9 | |
.endif | |
.ifc \r64,%r10 | |
\opd = 10 | |
.endif | |
.ifc \r64,%r11 | |
\opd = 11 | |
.endif | |
.ifc \r64,%r12 | |
\opd = 12 | |
.endif | |
.ifc \r64,%r13 | |
\opd = 13 | |
.endif | |
.ifc \r64,%r14 | |
\opd = 14 | |
.endif | |
.ifc \r64,%r15 | |
\opd = 15 | |
.endif | |
#endif | |
.endm | |
.macro REG_TYPE type reg | |
R32_NUM reg_type_r32 \reg | |
R64_NUM reg_type_r64 \reg | |
.if reg_type_r64 <> REG_NUM_INVALID | |
\type = REG_TYPE_R64 | |
.elseif reg_type_r32 <> REG_NUM_INVALID | |
\type = REG_TYPE_R32 | |
.else | |
\type = REG_TYPE_INVALID | |
.endif | |
.endm | |
.macro PFX_REX opd1 opd2 W=0 | |
.if ((\opd1 | \opd2) & 8) || \W | |
.byte 0x40 | ((\opd1 & 8) >> 3) | ((\opd2 & 8) >> 1) | (\W << 3) | |
.endif | |
.endm | |
.macro MODRM mod opd1 opd2 | |
.byte \mod | (\opd1 & 7) | ((\opd2 & 7) << 3) | |
.endm | |
#endif | |
#endif |