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Diffstat (limited to 'dev/LibCompiler/Backend/amd64.h')
| -rw-r--r-- | dev/LibCompiler/Backend/amd64.h | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/dev/LibCompiler/Backend/amd64.h b/dev/LibCompiler/Backend/amd64.h new file mode 100644 index 0000000..8486b01 --- /dev/null +++ b/dev/LibCompiler/Backend/amd64.h @@ -0,0 +1,58 @@ +/* ------------------------------------------- + + Copyright (C) 2024-2025 Amlal EL Mahrous, all rights reserved + +------------------------------------------- */ + +#pragma once + +#include <LibCompiler/Defines.h> + +// @brief AMD64 support. +// @file Backend/amd64.hpp + +#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 |