diff options
Diffstat (limited to 'deps/v8/src/interpreter/bytecode-register.cc')
| -rw-r--r-- | deps/v8/src/interpreter/bytecode-register.cc | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/deps/v8/src/interpreter/bytecode-register.cc b/deps/v8/src/interpreter/bytecode-register.cc index 56f6297016..4e56c3b411 100644 --- a/deps/v8/src/interpreter/bytecode-register.cc +++ b/deps/v8/src/interpreter/bytecode-register.cc @@ -8,10 +8,17 @@ namespace v8 { namespace internal { namespace interpreter { +#ifdef V8_REVERSE_JSARGS +static const int kFirstParamRegisterIndex = + (InterpreterFrameConstants::kRegisterFileFromFp - + InterpreterFrameConstants::kFirstParamFromFp) / + kSystemPointerSize; +#else static const int kLastParamRegisterIndex = (InterpreterFrameConstants::kRegisterFileFromFp - InterpreterFrameConstants::kLastParamFromFp) / kSystemPointerSize; +#endif static const int kFunctionClosureRegisterIndex = (InterpreterFrameConstants::kRegisterFileFromFp - StandardFrameConstants::kFunctionOffset) / @@ -36,14 +43,22 @@ static const int kCallerPCOffsetRegisterIndex = Register Register::FromParameterIndex(int index, int parameter_count) { DCHECK_GE(index, 0); DCHECK_LT(index, parameter_count); +#ifdef V8_REVERSE_JSARGS + int register_index = kFirstParamRegisterIndex - index; +#else int register_index = kLastParamRegisterIndex - parameter_count + index + 1; +#endif DCHECK_LT(register_index, 0); return Register(register_index); } int Register::ToParameterIndex(int parameter_count) const { DCHECK(is_parameter()); +#ifdef V8_REVERSE_JSARGS + return kFirstParamRegisterIndex - index(); +#else return index() - kLastParamRegisterIndex + parameter_count - 1; +#endif } Register Register::function_closure() { |