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- /*
- * Copyright (c) 2023, Andreas Kling <kling@serenityos.org>
- *
- * SPDX-License-Identifier: BSD-2-Clause
- */
- #pragma once
- #if ARCH(X86_64)
- # include <LibJIT/Assembler.h>
- # include <LibJS/Bytecode/Executable.h>
- # include <LibJS/Bytecode/Op.h>
- # include <LibJS/JIT/NativeExecutable.h>
- namespace JS::JIT {
- using ::JIT::Assembler;
- class Compiler {
- public:
- static OwnPtr<NativeExecutable> compile(Bytecode::Executable&);
- private:
- # if ARCH(X86_64)
- static constexpr auto GPR0 = Assembler::Reg::RAX;
- static constexpr auto GPR1 = Assembler::Reg::RCX;
- static constexpr auto ARG0 = Assembler::Reg::RDI;
- static constexpr auto ARG1 = Assembler::Reg::RSI;
- static constexpr auto ARG2 = Assembler::Reg::RDX;
- static constexpr auto ARG3 = Assembler::Reg::RCX;
- static constexpr auto ARG4 = Assembler::Reg::R8;
- static constexpr auto ARG5 = Assembler::Reg::R9;
- static constexpr auto RET = Assembler::Reg::RAX;
- static constexpr auto STACK_POINTER = Assembler::Reg::RSP;
- static constexpr auto REGISTER_ARRAY_BASE = Assembler::Reg::RBX;
- static constexpr auto LOCALS_ARRAY_BASE = Assembler::Reg::R14;
- static constexpr auto UNWIND_CONTEXT_BASE = Assembler::Reg::R15;
- # endif
- void compile_load_immediate(Bytecode::Op::LoadImmediate const&);
- void compile_load(Bytecode::Op::Load const&);
- void compile_store(Bytecode::Op::Store const&);
- void compile_get_local(Bytecode::Op::GetLocal const&);
- void compile_set_local(Bytecode::Op::SetLocal const&);
- void compile_typeof_local(Bytecode::Op::TypeofLocal const&);
- void compile_jump(Bytecode::Op::Jump const&);
- void compile_jump_conditional(Bytecode::Op::JumpConditional const&);
- void compile_jump_nullish(Bytecode::Op::JumpNullish const&);
- void compile_increment(Bytecode::Op::Increment const&);
- void compile_decrement(Bytecode::Op::Decrement const&);
- void compile_enter_unwind_context(Bytecode::Op::EnterUnwindContext const&);
- void compile_leave_unwind_context(Bytecode::Op::LeaveUnwindContext const&);
- void compile_throw(Bytecode::Op::Throw const&);
- void compile_create_lexical_environment(Bytecode::Op::CreateLexicalEnvironment const&);
- void compile_leave_lexical_environment(Bytecode::Op::LeaveLexicalEnvironment const&);
- void compile_to_numeric(Bytecode::Op::ToNumeric const&);
- void compile_resolve_this_binding(Bytecode::Op::ResolveThisBinding const&);
- # define JS_ENUMERATE_COMMON_BINARY_OPS_WITHOUT_FAST_PATH(O) \
- O(Add, add) \
- O(Sub, sub) \
- O(Mul, mul) \
- O(Div, div) \
- O(Exp, exp) \
- O(Mod, mod) \
- O(In, in) \
- O(InstanceOf, instance_of) \
- O(GreaterThan, greater_than) \
- O(GreaterThanEquals, greater_than_equals) \
- O(LessThanEquals, less_than_equals) \
- O(LooselyInequals, abstract_inequals) \
- O(LooselyEquals, abstract_equals) \
- O(StrictlyInequals, typed_inequals) \
- O(StrictlyEquals, typed_equals) \
- O(BitwiseAnd, bitwise_and) \
- O(BitwiseOr, bitwise_or) \
- O(BitwiseXor, bitwise_xor) \
- O(LeftShift, left_shift) \
- O(RightShift, right_shift) \
- O(UnsignedRightShift, unsigned_right_shift)
- # define DO_COMPILE_COMMON_BINARY_OP(OpTitleCase, op_snake_case) \
- void compile_##op_snake_case(Bytecode::Op::OpTitleCase const&);
- JS_ENUMERATE_COMMON_BINARY_OPS_WITHOUT_FAST_PATH(DO_COMPILE_COMMON_BINARY_OP)
- # undef DO_COMPILE_COMMON_BINARY_OP
- # define DO_COMPILE_COMMON_UNARY_OP(OpTitleCase, op_snake_case) \
- void compile_##op_snake_case(Bytecode::Op::OpTitleCase const&);
- JS_ENUMERATE_COMMON_UNARY_OPS(DO_COMPILE_COMMON_UNARY_OP)
- # undef DO_COMPILE_COMMON_UNARY_OP
- void compile_less_than(Bytecode::Op::LessThan const&);
- void compile_return(Bytecode::Op::Return const&);
- void compile_new_string(Bytecode::Op::NewString const&);
- void compile_new_object(Bytecode::Op::NewObject const&);
- void compile_new_array(Bytecode::Op::NewArray const&);
- void compile_new_function(Bytecode::Op::NewFunction const&);
- void compile_new_regexp(Bytecode::Op::NewRegExp const&);
- void compile_new_bigint(Bytecode::Op::NewBigInt const&);
- void compile_get_by_id(Bytecode::Op::GetById const&);
- void compile_get_by_value(Bytecode::Op::GetByValue const&);
- void compile_get_global(Bytecode::Op::GetGlobal const&);
- void compile_get_variable(Bytecode::Op::GetVariable const&);
- void compile_get_callee_and_this_from_environment(Bytecode::Op::GetCalleeAndThisFromEnvironment const&);
- void compile_put_by_id(Bytecode::Op::PutById const&);
- void compile_put_by_value(Bytecode::Op::PutByValue const&);
- void compile_call(Bytecode::Op::Call const&);
- void compile_typeof_variable(Bytecode::Op::TypeofVariable const&);
- void compile_set_variable(Bytecode::Op::SetVariable const&);
- void compile_continue_pending_unwind(Bytecode::Op::ContinuePendingUnwind const&);
- void store_vm_register(Bytecode::Register, Assembler::Reg);
- void load_vm_register(Assembler::Reg, Bytecode::Register);
- void store_vm_local(size_t, Assembler::Reg);
- void load_vm_local(Assembler::Reg, size_t);
- void compile_to_boolean(Assembler::Reg dst, Assembler::Reg src);
- void check_exception();
- void push_unwind_context(bool valid, Optional<Bytecode::Label> const& handler, Optional<Bytecode::Label> const& finalizer);
- void pop_unwind_context();
- void jump_to_exit();
- void native_call(void* function_address, Vector<Assembler::Operand> const& stack_arguments = {});
- template<typename Codegen>
- void branch_if_int32(Assembler::Reg, Codegen);
- template<typename Codegen>
- void branch_if_both_int32(Assembler::Reg, Assembler::Reg, Codegen);
- explicit Compiler(Bytecode::Executable& bytecode_executable)
- : m_bytecode_executable(bytecode_executable)
- {
- }
- Assembler::Label& label_for(Bytecode::BasicBlock const& block)
- {
- return block_data_for(block).label;
- }
- struct BasicBlockData {
- size_t start_offset { 0 };
- Assembler::Label label;
- Vector<size_t> absolute_references_to_here;
- };
- BasicBlockData& block_data_for(Bytecode::BasicBlock const& block)
- {
- return *m_basic_block_data.ensure(&block, [] {
- return make<BasicBlockData>();
- });
- }
- HashMap<Bytecode::BasicBlock const*, NonnullOwnPtr<BasicBlockData>> m_basic_block_data;
- Vector<u8> m_output;
- Assembler m_assembler { m_output };
- Assembler::Label m_exit_label;
- Bytecode::Executable& m_bytecode_executable;
- };
- }
- #else
- namespace JS::JIT {
- class Compiler {
- public:
- static OwnPtr<NativeExecutable> compile(Bytecode::Executable&) { return nullptr; }
- };
- }
- #endif
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