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#include "assembler.h"
#include "byteorder.h"
using namespace std::string_literals;
Asm::Args::Immediate8::Immediate8(uint8_t value): m_value(value)
{}
uint8_t Asm::Args::Immediate8::value() const
{
return m_value;
}
std::vector<uint8_t> Asm::Args::Immediate8::getCode() const
{
return {m_value};
}
Asm::Args::Immediate16::Immediate16(uint16_t value): m_value(value)
{}
uint16_t Asm::Args::Immediate16::value() const
{
return m_value;
}
std::vector<uint8_t> Asm::Args::Immediate16::getCode() const
{
return endian::to_little(m_value);
}
Asm::Args::Immediate32::Immediate32(uint32_t value): m_value(value)
{}
Asm::Args::Immediate32::Immediate32(const Asm::Args::Immediate64& imm64)
{
if (imm64.value() < 0x100000000)
m_value = static_cast<uint32_t>(imm64.value());
else
throw std::runtime_error("Immediate32: Constructed from too big Immediate64");
}
uint32_t Asm::Args::Immediate32::value() const
{
return m_value;
}
std::vector<uint8_t> Asm::Args::Immediate32::getCode() const
{
return endian::to_little(m_value);
}
Asm::Args::Immediate64::Immediate64(uint64_t value): m_value(value)
{}
uint64_t Asm::Args::Immediate64::value() const
{
return m_value;
}
std::vector<uint8_t> Asm::Args::Immediate64::getCode() const
{
return endian::to_little(m_value);
}
Asm::Args::Register8::Register8(const std::string& name): m_name(name)
{}
std::string Asm::Args::Register8::name() const
{
return m_name;
}
Asm::Args::Register16::Register16(const std::string& name): m_name(name)
{}
std::string Asm::Args::Register16::name() const
{
return m_name;
}
Asm::Args::Register32::Register32(const std::string& name): m_name(name)
{}
std::string Asm::Args::Register32::name() const
{
return m_name;
}
Asm::Args::Register64::Register64(const std::string& name): m_name(name)
{}
std::string Asm::Args::Register64::name() const
{
return m_name;
}
Asm::Args::Mem8Ptr64::Mem8Ptr64(const std::string& reg, int32_t offs): m_reg(reg), m_offs(offs)
{}
Asm::Args::Mem8Ptr64::Mem8Ptr64(const std::string& reg, const std::string& reg2, int32_t offs): m_reg(reg), m_reg2(reg2), m_offs(offs)
{}
std::string Asm::Args::Mem8Ptr64::reg() const
{
return "["s + m_reg + "]"s;
}
std::string Asm::Args::Mem8Ptr64::reg2() const
{
return "["s + m_reg2 + "]"s;
}
int32_t Asm::Args::Mem8Ptr64::offs() const
{
return m_offs;
}
Asm::Args::Mem16Ptr64::Mem16Ptr64(const std::string& reg, int32_t offs): m_reg(reg), m_offs(offs)
{}
Asm::Args::Mem16Ptr64::Mem16Ptr64(const std::string& reg, const std::string& reg2, int32_t offs): m_reg(reg), m_reg2(reg2), m_offs(offs)
{}
std::string Asm::Args::Mem16Ptr64::reg() const
{
return "["s + m_reg + "]"s;
}
std::string Asm::Args::Mem16Ptr64::reg2() const
{
return "["s + m_reg2 + "]"s;
}
int32_t Asm::Args::Mem16Ptr64::offs() const
{
return m_offs;
}
Asm::Args::Mem32Ptr64::Mem32Ptr64(const std::string& reg, int32_t offs): m_reg(reg), m_offs(offs)
{}
Asm::Args::Mem32Ptr64::Mem32Ptr64(const std::string& reg, const std::string& reg2, int32_t offs): m_reg(reg), m_reg2(reg2), m_offs(offs)
{}
std::string Asm::Args::Mem32Ptr64::reg() const
{
return "["s + m_reg + "]"s;
}
std::string Asm::Args::Mem32Ptr64::reg2() const
{
return "["s + m_reg2 + "]"s;
}
int32_t Asm::Args::Mem32Ptr64::offs() const
{
return m_offs;
}
Asm::Args::Mem64Ptr64::Mem64Ptr64(const std::string& reg, int32_t offs): m_reg(reg), m_offs(offs)
{}
Asm::Args::Mem64Ptr64::Mem64Ptr64(const std::string& reg, const std::string& reg2, int32_t offs): m_reg(reg), m_reg2(reg2), m_offs(offs)
{}
std::string Asm::Args::Mem64Ptr64::reg() const
{
return "["s + m_reg + "]"s;
}
std::string Asm::Args::Mem64Ptr64::reg2() const
{
return "["s + m_reg2 + "]"s;
}
int32_t Asm::Args::Mem64Ptr64::offs() const
{
return m_offs;
}
namespace {
std::unordered_map<std::string, FactoryFunction> ops;
}
bool registerOp(const std::string& mnemonic, FactoryFunction f)
{
if (ops.contains(mnemonic)) {
std::cerr << "Warning: mnemonic |" << mnemonic << "| already registered." << std::endl;
return false;
}
//std::cout << "Registering mnemonic |" << mnemonic << "|." << std::endl;
ops[mnemonic] = f;
return true;
}
std::string mangleName(const std::string& s, const Asm::Args& args)
{
std::string result {s};
for (const auto& arg: args) {
result += "_"s + arg.type().name();
}
return result;
}
std::shared_ptr<Op> makeOp(const std::string& mnemonic, const Asm::Args& args)
{
std::string mangled{mangleName(mnemonic, args)};
const auto& i{ops.find(mangled)};
if (i == ops.end())
throw std::runtime_error("Instruction "s + mangled + " not implemented.");
return i->second(args);
}
std::shared_ptr<Op> makeOp(const std::string& mnemonic)
{
Asm::Args dummy; // empty list of arguments
return makeOp(mnemonic, dummy);
}
std::shared_ptr<Label> makeLabel(const std::string& name)
{
return std::make_shared<Label>(name);
}
std::shared_ptr<Data> makeData(const std::vector<uint8_t>& data)
{
return std::make_shared<Data>(data);
}
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