1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
|
/* -------------------------------------------
Copyright (C) 2024-2025 Amlal EL Mahrous, all rights reserved
------------------------------------------- */
#pragma once
#include <LibCompiler/Defines.h>
// @brief AMD64 support.
// @file Backend/Amd64.h
#define kAsmOpcodeDecl(__NAME, __OPCODE) {.fName = __NAME, .fOpcode = __OPCODE},
typedef char i64_character_t;
typedef uint8_t i64_byte_t;
typedef uint16_t i64_hword_t;
typedef uint32_t i64_word_t;
#define kAsmRegisterPrefix "r"
struct CpuOpcodeAMD64 {
std::string fName;
i64_byte_t fPrefixBytes[4];
i64_hword_t fOpcode;
i64_hword_t fModReg;
i64_word_t fDisplacment;
i64_word_t fImmediate;
};
/// these two are edge cases
#define kAsmIntOpcode 0xCC
#define kasmIntOpcodeAlt 0xCD
#define kAsmJumpOpcode 0x0F80
#define kJumpLimit 30
#define kJumpLimitStandard 0xE3
#define kJumpLimitStandardLimit 0xEB
inline std::vector<CpuOpcodeAMD64> kOpcodesAMD64 = {
kAsmOpcodeDecl("int", 0xCD) kAsmOpcodeDecl("into", 0xCE) kAsmOpcodeDecl("intd", 0xF1)
kAsmOpcodeDecl("int3", 0xC3) kAsmOpcodeDecl("iret", 0xCF) kAsmOpcodeDecl("retf", 0xCB)
kAsmOpcodeDecl("retn", 0xC3) kAsmOpcodeDecl("ret", 0xC3) kAsmOpcodeDecl("sti", 0xfb)
kAsmOpcodeDecl("cli", 0xfa) kAsmOpcodeDecl("hlt", 0xf4) kAsmOpcodeDecl("nop", 0x90)
kAsmOpcodeDecl("mov", 0x48) kAsmOpcodeDecl("call", 0xFF)};
#define kAsmRegisterLimit 16
|
