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#include "Instruction.h"
#include "Exceptions.h"
namespace x86 {
std::string Register2Str(x86::Register reg) {
switch(reg){
case x86::Register::EAX: return "EAX";
case x86::Register::ECX: return "ECX";
case x86::Register::EDX: return "EDX";
case x86::Register::EBX: return "EBX";
case x86::Register::ESP: return "ESP";
case x86::Register::EBP: return "EBP";
case x86::Register::ESI: return "ESI";
case x86::Register::EDI: return "EDI";
}
throw std::runtime_error("Register not found!");
}
SIB ProcessSIB(uint8_t sib) {
uint8_t scale_mask = 0b11000000;
uint8_t index_mask = 0b00111000;
uint8_t base_mask = 0b00000111;
uint8_t scale = (sib & scale_mask) >> 6;
uint8_t index = (sib & index_mask) >> 3;
uint8_t base = sib & base_mask;
if(index == 4) index = x86::Register::SIB_NONE;
if(base == 4) base = x86::Register::SIB_DISP;
return {.m_Scale = scale, .m_Index = (x86::Register)index, .m_Base = (x86::Register)base};
}
}
std::string Opcode2Str(Opcode op) {
switch(op) {
case Opcode::INVALID: return "INVALID";
case Opcode::ADD_RM32_R32: return "ADD_RM32_R32";
case Opcode::ADD_R32_RM32: return "ADD_R32_RM32";
case Opcode::MOV_R32_IMM32 ... 0xBF: return "MOV_R32_IMM32";
case Opcode::MOV_RM32_R32: return "MOV_RM32_R32";
case Opcode::NOP: return "NOP";
case Opcode::HLT: return "HLT";
}
std::string what = "Opcode2Str could not find '" + std::to_string(op) + "'!";
throw CPUException(what);
}
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