mirror of
https://github.com/luau-lang/luau.git
synced 2024-12-13 13:30:40 +00:00
186 lines
7.1 KiB
C++
186 lines
7.1 KiB
C++
// This file is part of the Luau programming language and is licensed under MIT License; see LICENSE.txt for details
|
|
#pragma once
|
|
|
|
#include "Luau/RegisterA64.h"
|
|
#include "Luau/AddressA64.h"
|
|
#include "Luau/ConditionA64.h"
|
|
#include "Luau/Label.h"
|
|
|
|
#include <string>
|
|
#include <vector>
|
|
|
|
namespace Luau
|
|
{
|
|
namespace CodeGen
|
|
{
|
|
namespace A64
|
|
{
|
|
|
|
class AssemblyBuilderA64
|
|
{
|
|
public:
|
|
explicit AssemblyBuilderA64(bool logText);
|
|
~AssemblyBuilderA64();
|
|
|
|
// Moves
|
|
void mov(RegisterA64 dst, RegisterA64 src);
|
|
void mov(RegisterA64 dst, int src); // macro
|
|
|
|
// Moves of 32-bit immediates get decomposed into one or more of these
|
|
void movz(RegisterA64 dst, uint16_t src, int shift = 0);
|
|
void movn(RegisterA64 dst, uint16_t src, int shift = 0);
|
|
void movk(RegisterA64 dst, uint16_t src, int shift = 0);
|
|
|
|
// Arithmetics
|
|
void add(RegisterA64 dst, RegisterA64 src1, RegisterA64 src2, int shift = 0);
|
|
void add(RegisterA64 dst, RegisterA64 src1, uint16_t src2);
|
|
void sub(RegisterA64 dst, RegisterA64 src1, RegisterA64 src2, int shift = 0);
|
|
void sub(RegisterA64 dst, RegisterA64 src1, uint16_t src2);
|
|
void neg(RegisterA64 dst, RegisterA64 src);
|
|
|
|
// Comparisons
|
|
// Note: some arithmetic instructions also have versions that update flags (ADDS etc) but we aren't using them atm
|
|
void cmp(RegisterA64 src1, RegisterA64 src2);
|
|
void cmp(RegisterA64 src1, uint16_t src2);
|
|
|
|
// Bitwise
|
|
// Note: shifted-register support and bitfield operations are omitted for simplicity
|
|
// TODO: support immediate arguments (they have odd encoding and forbid many values)
|
|
void and_(RegisterA64 dst, RegisterA64 src1, RegisterA64 src2);
|
|
void orr(RegisterA64 dst, RegisterA64 src1, RegisterA64 src2);
|
|
void eor(RegisterA64 dst, RegisterA64 src1, RegisterA64 src2);
|
|
void mvn(RegisterA64 dst, RegisterA64 src);
|
|
|
|
// Shifts
|
|
void lsl(RegisterA64 dst, RegisterA64 src1, RegisterA64 src2);
|
|
void lsr(RegisterA64 dst, RegisterA64 src1, RegisterA64 src2);
|
|
void asr(RegisterA64 dst, RegisterA64 src1, RegisterA64 src2);
|
|
void ror(RegisterA64 dst, RegisterA64 src1, RegisterA64 src2);
|
|
void clz(RegisterA64 dst, RegisterA64 src);
|
|
void rbit(RegisterA64 dst, RegisterA64 src);
|
|
|
|
// Load
|
|
// Note: paired loads are currently omitted for simplicity
|
|
void ldr(RegisterA64 dst, AddressA64 src);
|
|
void ldrb(RegisterA64 dst, AddressA64 src);
|
|
void ldrh(RegisterA64 dst, AddressA64 src);
|
|
void ldrsb(RegisterA64 dst, AddressA64 src);
|
|
void ldrsh(RegisterA64 dst, AddressA64 src);
|
|
void ldrsw(RegisterA64 dst, AddressA64 src);
|
|
void ldp(RegisterA64 dst1, RegisterA64 dst2, AddressA64 src);
|
|
|
|
// Store
|
|
void str(RegisterA64 src, AddressA64 dst);
|
|
void strb(RegisterA64 src, AddressA64 dst);
|
|
void strh(RegisterA64 src, AddressA64 dst);
|
|
void stp(RegisterA64 src1, RegisterA64 src2, AddressA64 dst);
|
|
|
|
// Control flow
|
|
// Note: tbz/tbnz are currently not supported because they have 15-bit offsets and we don't support branch thunks
|
|
void b(Label& label);
|
|
void b(ConditionA64 cond, Label& label);
|
|
void cbz(RegisterA64 src, Label& label);
|
|
void cbnz(RegisterA64 src, Label& label);
|
|
void br(RegisterA64 src);
|
|
void blr(RegisterA64 src);
|
|
void ret();
|
|
|
|
// Address of embedded data
|
|
void adr(RegisterA64 dst, const void* ptr, size_t size);
|
|
void adr(RegisterA64 dst, uint64_t value);
|
|
void adr(RegisterA64 dst, double value);
|
|
|
|
// Address of code (label)
|
|
void adr(RegisterA64 dst, Label& label);
|
|
|
|
// Run final checks
|
|
bool finalize();
|
|
|
|
// Places a label at current location and returns it
|
|
Label setLabel();
|
|
|
|
// Assigns label position to the current location
|
|
void setLabel(Label& label);
|
|
|
|
// Extracts code offset (in bytes) from label
|
|
uint32_t getLabelOffset(const Label& label)
|
|
{
|
|
LUAU_ASSERT(label.location != ~0u);
|
|
return label.location * 4;
|
|
}
|
|
|
|
void logAppend(const char* fmt, ...) LUAU_PRINTF_ATTR(2, 3);
|
|
|
|
uint32_t getCodeSize() const;
|
|
|
|
// Resulting data and code that need to be copied over one after the other
|
|
// The *end* of 'data' has to be aligned to 16 bytes, this will also align 'code'
|
|
std::vector<uint8_t> data;
|
|
std::vector<uint32_t> code;
|
|
|
|
std::string text;
|
|
|
|
const bool logText = false;
|
|
|
|
// Maximum immediate argument to functions like add/sub/cmp
|
|
static constexpr size_t kMaxImmediate = (1 << 12) - 1;
|
|
|
|
private:
|
|
// Instruction archetypes
|
|
void place0(const char* name, uint32_t word);
|
|
void placeSR3(const char* name, RegisterA64 dst, RegisterA64 src1, RegisterA64 src2, uint8_t op, int shift = 0);
|
|
void placeSR2(const char* name, RegisterA64 dst, RegisterA64 src, uint8_t op, uint8_t op2 = 0);
|
|
void placeR3(const char* name, RegisterA64 dst, RegisterA64 src1, RegisterA64 src2, uint8_t op, uint8_t op2);
|
|
void placeR1(const char* name, RegisterA64 dst, RegisterA64 src, uint32_t op);
|
|
void placeI12(const char* name, RegisterA64 dst, RegisterA64 src1, int src2, uint8_t op);
|
|
void placeI16(const char* name, RegisterA64 dst, int src, uint8_t op, int shift = 0);
|
|
void placeA(const char* name, RegisterA64 dst, AddressA64 src, uint8_t op, uint8_t size);
|
|
void placeBC(const char* name, Label& label, uint8_t op, uint8_t cond);
|
|
void placeBCR(const char* name, Label& label, uint8_t op, RegisterA64 cond);
|
|
void placeBR(const char* name, RegisterA64 src, uint32_t op);
|
|
void placeADR(const char* name, RegisterA64 src, uint8_t op);
|
|
void placeADR(const char* name, RegisterA64 src, uint8_t op, Label& label);
|
|
void placeP(const char* name, RegisterA64 dst1, RegisterA64 dst2, AddressA64 src, uint8_t op, uint8_t size);
|
|
|
|
void place(uint32_t word);
|
|
|
|
void patchLabel(Label& label);
|
|
void patchImm19(uint32_t location, int value);
|
|
|
|
void commit();
|
|
LUAU_NOINLINE void extend();
|
|
|
|
// Data
|
|
size_t allocateData(size_t size, size_t align);
|
|
|
|
// Logging of assembly in text form
|
|
LUAU_NOINLINE void log(const char* opcode);
|
|
LUAU_NOINLINE void log(const char* opcode, RegisterA64 dst, RegisterA64 src1, RegisterA64 src2, int shift = 0);
|
|
LUAU_NOINLINE void log(const char* opcode, RegisterA64 dst, RegisterA64 src1, int src2);
|
|
LUAU_NOINLINE void log(const char* opcode, RegisterA64 dst, RegisterA64 src);
|
|
LUAU_NOINLINE void log(const char* opcode, RegisterA64 dst, int src, int shift = 0);
|
|
LUAU_NOINLINE void log(const char* opcode, RegisterA64 dst, AddressA64 src);
|
|
LUAU_NOINLINE void log(const char* opcode, RegisterA64 dst1, RegisterA64 dst2, AddressA64 src);
|
|
LUAU_NOINLINE void log(const char* opcode, RegisterA64 src, Label label);
|
|
LUAU_NOINLINE void log(const char* opcode, RegisterA64 src);
|
|
LUAU_NOINLINE void log(const char* opcode, Label label);
|
|
LUAU_NOINLINE void log(Label label);
|
|
LUAU_NOINLINE void log(RegisterA64 reg);
|
|
LUAU_NOINLINE void log(AddressA64 addr);
|
|
|
|
uint32_t nextLabel = 1;
|
|
std::vector<Label> pendingLabels;
|
|
std::vector<uint32_t> labelLocations;
|
|
|
|
bool finalized = false;
|
|
bool overflowed = false;
|
|
|
|
size_t dataPos = 0;
|
|
|
|
uint32_t* codePos = nullptr;
|
|
uint32_t* codeEnd = nullptr;
|
|
};
|
|
|
|
} // namespace A64
|
|
} // namespace CodeGen
|
|
} // namespace Luau
|