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https://github.com/RGBCube/serenity
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LibJS/JIT: Stub out the JIT compiler on everything but ARCH(X86_64)
We don't support other architectures yet!
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commit
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2 changed files with 100 additions and 81 deletions
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@ -5,6 +5,7 @@
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*/
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#include <AK/OwnPtr.h>
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#include <AK/Platform.h>
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#include <LibJS/Bytecode/CommonImplementations.h>
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#include <LibJS/Bytecode/Instruction.h>
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#include <LibJS/Bytecode/Interpreter.h>
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@ -17,23 +18,25 @@
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#include <sys/mman.h>
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#include <unistd.h>
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#define LOG_JIT_SUCCESS 1
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#define LOG_JIT_FAILURE 1
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#define DUMP_JIT_MACHINE_CODE_TO_STDOUT 0
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#if ARCH(X86_64)
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#define TRY_OR_SET_EXCEPTION(expression) \
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({ \
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/* Ignore -Wshadow to allow nesting the macro. */ \
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AK_IGNORE_DIAGNOSTIC("-Wshadow", \
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auto&& _temporary_result = (expression)); \
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static_assert(!::AK::Detail::IsLvalueReference<decltype(_temporary_result.release_value())>, \
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"Do not return a reference from a fallible expression"); \
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if (_temporary_result.is_error()) [[unlikely]] { \
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vm.bytecode_interpreter().reg(Bytecode::Register::exception()) = _temporary_result.release_error().value().value(); \
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return {}; \
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} \
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_temporary_result.release_value(); \
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})
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# define LOG_JIT_SUCCESS 1
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# define LOG_JIT_FAILURE 1
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# define DUMP_JIT_MACHINE_CODE_TO_STDOUT 0
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# define TRY_OR_SET_EXCEPTION(expression) \
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({ \
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/* Ignore -Wshadow to allow nesting the macro. */ \
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AK_IGNORE_DIAGNOSTIC("-Wshadow", \
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auto&& _temporary_result = (expression)); \
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static_assert(!::AK::Detail::IsLvalueReference<decltype(_temporary_result.release_value())>, \
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"Do not return a reference from a fallible expression"); \
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if (_temporary_result.is_error()) [[unlikely]] { \
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vm.bytecode_interpreter().reg(Bytecode::Register::exception()) = _temporary_result.release_error().value().value(); \
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return {}; \
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} \
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_temporary_result.release_value(); \
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})
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namespace JS::JIT {
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@ -434,23 +437,23 @@ static ThrowCompletionOr<Value> typed_equals(VM&, Value src1, Value src2)
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return Value(is_strictly_equal(src1, src2));
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}
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#define DO_COMPILE_COMMON_BINARY_OP(TitleCaseName, snake_case_name) \
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static Value cxx_##snake_case_name(VM& vm, Value lhs, Value rhs) \
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{ \
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return TRY_OR_SET_EXCEPTION(snake_case_name(vm, lhs, rhs)); \
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} \
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\
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void Compiler::compile_##snake_case_name(Bytecode::Op::TitleCaseName const& op) \
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{ \
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load_vm_register(ARG1, op.lhs()); \
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load_vm_register(ARG2, Bytecode::Register::accumulator()); \
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m_assembler.native_call((void*)cxx_##snake_case_name); \
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store_vm_register(Bytecode::Register::accumulator(), RET); \
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check_exception(); \
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}
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# define DO_COMPILE_COMMON_BINARY_OP(TitleCaseName, snake_case_name) \
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static Value cxx_##snake_case_name(VM& vm, Value lhs, Value rhs) \
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{ \
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return TRY_OR_SET_EXCEPTION(snake_case_name(vm, lhs, rhs)); \
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} \
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\
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void Compiler::compile_##snake_case_name(Bytecode::Op::TitleCaseName const& op) \
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{ \
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load_vm_register(ARG1, op.lhs()); \
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load_vm_register(ARG2, Bytecode::Register::accumulator()); \
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m_assembler.native_call((void*)cxx_##snake_case_name); \
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store_vm_register(Bytecode::Register::accumulator(), RET); \
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check_exception(); \
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}
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JS_ENUMERATE_COMMON_BINARY_OPS_WITHOUT_FAST_PATH(DO_COMPILE_COMMON_BINARY_OP)
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#undef DO_COMPILE_COMMON_BINARY_OP
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# undef DO_COMPILE_COMMON_BINARY_OP
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static Value cxx_less_than(VM& vm, Value lhs, Value rhs)
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{
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@ -509,22 +512,22 @@ static ThrowCompletionOr<Value> typeof_(VM& vm, Value value)
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return PrimitiveString::create(vm, value.typeof());
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}
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#define DO_COMPILE_COMMON_UNARY_OP(TitleCaseName, snake_case_name) \
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static Value cxx_##snake_case_name(VM& vm, Value value) \
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{ \
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return TRY_OR_SET_EXCEPTION(snake_case_name(vm, value)); \
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} \
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\
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void Compiler::compile_##snake_case_name(Bytecode::Op::TitleCaseName const&) \
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{ \
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load_vm_register(ARG1, Bytecode::Register::accumulator()); \
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m_assembler.native_call((void*)cxx_##snake_case_name); \
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store_vm_register(Bytecode::Register::accumulator(), RET); \
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check_exception(); \
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}
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# define DO_COMPILE_COMMON_UNARY_OP(TitleCaseName, snake_case_name) \
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static Value cxx_##snake_case_name(VM& vm, Value value) \
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{ \
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return TRY_OR_SET_EXCEPTION(snake_case_name(vm, value)); \
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} \
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\
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void Compiler::compile_##snake_case_name(Bytecode::Op::TitleCaseName const&) \
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{ \
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load_vm_register(ARG1, Bytecode::Register::accumulator()); \
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m_assembler.native_call((void*)cxx_##snake_case_name); \
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store_vm_register(Bytecode::Register::accumulator(), RET); \
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check_exception(); \
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}
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JS_ENUMERATE_COMMON_UNARY_OPS(DO_COMPILE_COMMON_UNARY_OP)
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#undef DO_COMPILE_COMMON_UNARY_OP
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# undef DO_COMPILE_COMMON_UNARY_OP
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void Compiler::compile_return(Bytecode::Op::Return const&)
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{
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@ -1016,19 +1019,19 @@ OwnPtr<NativeExecutable> Compiler::compile(Bytecode::Executable& bytecode_execut
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compiler.compile_less_than(static_cast<Bytecode::Op::LessThan const&>(op));
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break;
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#define DO_COMPILE_COMMON_BINARY_OP(TitleCaseName, snake_case_name) \
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# define DO_COMPILE_COMMON_BINARY_OP(TitleCaseName, snake_case_name) \
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case Bytecode::Instruction::Type::TitleCaseName: \
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compiler.compile_##snake_case_name(static_cast<Bytecode::Op::TitleCaseName const&>(op)); \
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break;
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JS_ENUMERATE_COMMON_BINARY_OPS_WITHOUT_FAST_PATH(DO_COMPILE_COMMON_BINARY_OP)
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#undef DO_COMPILE_COMMON_BINARY_OP
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# undef DO_COMPILE_COMMON_BINARY_OP
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#define DO_COMPILE_COMMON_UNARY_OP(TitleCaseName, snake_case_name) \
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# define DO_COMPILE_COMMON_UNARY_OP(TitleCaseName, snake_case_name) \
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case Bytecode::Instruction::Type::TitleCaseName: \
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compiler.compile_##snake_case_name(static_cast<Bytecode::Op::TitleCaseName const&>(op)); \
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break;
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JS_ENUMERATE_COMMON_UNARY_OPS(DO_COMPILE_COMMON_UNARY_OP)
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#undef DO_COMPILE_COMMON_UNARY_OP
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# undef DO_COMPILE_COMMON_UNARY_OP
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default:
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if constexpr (LOG_JIT_FAILURE) {
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@ -1088,3 +1091,5 @@ OwnPtr<NativeExecutable> Compiler::compile(Bytecode::Executable& bytecode_execut
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}
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}
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#endif
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