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LibJS/JIT: Add support for "throw" keyword

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This commit is contained in:
Geo25rey 2023-10-17 19:20:14 -04:00 • committed by Andreas Kling
parent ed0d2bce83
commit 891b071654
2 changed files with 13 additions and 1 deletions
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13
Userland/Libraries/LibJS/JIT/Compiler.cpp
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@ -313,6 +313,13 @@ void Compiler::compile_leave_unwind_context(Bytecode::Op::LeaveUnwindContext con
pop_unwind_context(); pop_unwind_context();
} }
void Compiler::compile_throw(Bytecode::Op::Throw const&)
{
load_vm_register(GPR0, Bytecode::Register::accumulator());
store_vm_register(Bytecode::Register::exception(), GPR0);
check_exception();
}
OwnPtr<NativeExecutable> Compiler::compile(Bytecode::Executable const& bytecode_executable) OwnPtr<NativeExecutable> Compiler::compile(Bytecode::Executable const& bytecode_executable)
{ {
if (getenv("LIBJS_NO_JIT")) if (getenv("LIBJS_NO_JIT"))
@ -371,6 +378,9 @@ OwnPtr<NativeExecutable> Compiler::compile(Bytecode::Executable const& bytecode_
case Bytecode::Instruction::Type::LeaveUnwindContext: case Bytecode::Instruction::Type::LeaveUnwindContext:
compiler.compile_leave_unwind_context(static_cast<Bytecode::Op::LeaveUnwindContext const&>(op)); compiler.compile_leave_unwind_context(static_cast<Bytecode::Op::LeaveUnwindContext const&>(op));
break; break;
case Bytecode::Instruction::Type::Throw:
compiler.compile_throw(static_cast<Bytecode::Op::Throw const&>(op));
break;
default: default:
dbgln("JIT compilation failed: {}", bytecode_executable.name); dbgln("JIT compilation failed: {}", bytecode_executable.name);
dbgln("Unsupported bytecode op: {}", op.to_deprecated_string(bytecode_executable)); dbgln("Unsupported bytecode op: {}", op.to_deprecated_string(bytecode_executable));
@ -413,7 +423,8 @@ OwnPtr<NativeExecutable> Compiler::compile(Bytecode::Executable const& bytecode_
} }
} }
write(STDOUT_FILENO, compiler.m_output.data(), compiler.m_output.size()); size_t res = write(STDOUT_FILENO, compiler.m_output.data(), compiler.m_output.size());
if (!res) {}
memcpy(executable_memory, compiler.m_output.data(), compiler.m_output.size()); memcpy(executable_memory, compiler.m_output.data(), compiler.m_output.size());
mprotect(executable_memory, compiler.m_output.size(), PROT_READ | PROT_EXEC); mprotect(executable_memory, compiler.m_output.size(), PROT_READ | PROT_EXEC);

1
Userland/Libraries/LibJS/JIT/Compiler.h
View file

@ -40,6 +40,7 @@ private:
void compile_increment(Bytecode::Op::Increment const&); void compile_increment(Bytecode::Op::Increment const&);
void compile_enter_unwind_context(Bytecode::Op::EnterUnwindContext const&); void compile_enter_unwind_context(Bytecode::Op::EnterUnwindContext const&);
void compile_leave_unwind_context(Bytecode::Op::LeaveUnwindContext const&); void compile_leave_unwind_context(Bytecode::Op::LeaveUnwindContext const&);
void compile_throw(Bytecode::Op::Throw const&);
void store_vm_register(Bytecode::Register, Assembler::Reg); void store_vm_register(Bytecode::Register, Assembler::Reg);
void load_vm_register(Assembler::Reg, Bytecode::Register); void load_vm_register(Assembler::Reg, Bytecode::Register);