mirror of
https://github.com/RGBCube/serenity
synced 2025-05-16 19:55:06 +00:00
9dd5be0186
These push a "valid" unwind context on the stack and check_exception() now knows how to jump to the (catch) handler if present. (finally) finalizers will require some more work, but with this change, we now have basic support for try...catch. :^)
61 lines
2.2 KiB
C++
61 lines
2.2 KiB
C++
/*
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* Copyright (c) 2023, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <LibJS/Bytecode/Executable.h>
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#include <LibJS/Bytecode/Op.h>
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#include <LibJS/JIT/Assembler.h>
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#include <LibJS/JIT/NativeExecutable.h>
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namespace JS::JIT {
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class Compiler {
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public:
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static OwnPtr<NativeExecutable> compile(Bytecode::Executable const&);
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private:
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static constexpr auto GPR0 = Assembler::Reg::RAX;
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static constexpr auto GPR1 = Assembler::Reg::RCX;
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static constexpr auto ARG0 = Assembler::Reg::RDI;
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static constexpr auto ARG1 = Assembler::Reg::RSI;
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static constexpr auto ARG2 = Assembler::Reg::RDX;
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static constexpr auto RET = Assembler::Reg::RAX;
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static constexpr auto STACK_POINTER = Assembler::Reg::RSP;
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static constexpr auto REGISTER_ARRAY_BASE = Assembler::Reg::R8;
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static constexpr auto LOCALS_ARRAY_BASE = Assembler::Reg::R9;
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static constexpr auto UNWIND_CONTEXT_BASE = Assembler::Reg::R10;
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void compile_load_immediate(Bytecode::Op::LoadImmediate const&);
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void compile_load(Bytecode::Op::Load const&);
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void compile_store(Bytecode::Op::Store const&);
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void compile_get_local(Bytecode::Op::GetLocal const&);
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void compile_set_local(Bytecode::Op::SetLocal const&);
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void compile_jump(Bytecode::Op::Jump const&);
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void compile_jump_conditional(Bytecode::Op::JumpConditional const&);
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void compile_less_than(Bytecode::Op::LessThan const&);
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void compile_increment(Bytecode::Op::Increment const&);
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void compile_enter_unwind_context(Bytecode::Op::EnterUnwindContext const&);
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void compile_leave_unwind_context(Bytecode::Op::LeaveUnwindContext const&);
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void store_vm_register(Bytecode::Register, Assembler::Reg);
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void load_vm_register(Assembler::Reg, Bytecode::Register);
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void store_vm_local(size_t, Assembler::Reg);
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void load_vm_local(Assembler::Reg, size_t);
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void compile_to_boolean(Assembler::Reg dst, Assembler::Reg src);
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void check_exception();
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void push_unwind_context(bool valid, Optional<Bytecode::Label> const& handler, Optional<Bytecode::Label> const& finalizer);
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void pop_unwind_context();
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Vector<u8> m_output;
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Assembler m_assembler { m_output };
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};
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}
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