}
-void MacroAssembler::PrepareCallApiFunction(int stack_space, int argc) {
+void MacroAssembler::PrepareCallApiFunction(int stack_space,
+ int arg_stack_space) {
#ifdef _WIN64
// We need to prepare a slot for result handle on stack and put
// a pointer to it into 1st arg register.
- int register_based_args = argc > 3 ? 3 : argc;
- EnterApiExitFrame(stack_space, argc - register_based_args + 1);
+ EnterApiExitFrame(stack_space, arg_stack_space + 1);
- int return_value_slot = (argc > 3 ? argc - 3 + 1 : 4);
// rcx must be used to pass the pointer to the return value slot.
- lea(rcx, Operand(rsp, return_value_slot * kPointerSize));
+ lea(rcx, StackSpaceOperand(arg_stack_space));
#else
- EnterApiExitFrame(stack_space, argc);
+ EnterApiExitFrame(stack_space, arg_stack_space);
#endif
}
store_rax(context_address);
}
-void MacroAssembler::EnterExitFrameEpilogue(int result_size,
- int argc) {
+
+void MacroAssembler::EnterExitFrameEpilogue(int arg_stack_space) {
#ifdef _WIN64
- // Reserve space on stack for result and argument structures, if necessary.
- int result_stack_space = (result_size < 2) ? 0 : result_size * kPointerSize;
- // Reserve space for the Arguments object. The Windows 64-bit ABI
- // requires us to pass this structure as a pointer to its location on
- // the stack. The structure contains 2 values.
- int argument_stack_space = argc * kPointerSize;
- // We also need backing space for 4 parameters, even though
- // we only pass one or two parameter, and it is in a register.
- int argument_mirror_space = 4 * kPointerSize;
- int total_stack_space =
- argument_mirror_space + argument_stack_space + result_stack_space;
- subq(rsp, Immediate(total_stack_space));
+ const int kShaddowSpace = 4;
+ arg_stack_space += kShaddowSpace;
#endif
+ if (arg_stack_space > 0) {
+ subq(rsp, Immediate(arg_stack_space * kPointerSize));
+ }
// Get the required frame alignment for the OS.
static const int kFrameAlignment = OS::ActivationFrameAlignment();
}
-void MacroAssembler::EnterExitFrame(int result_size) {
+void MacroAssembler::EnterExitFrame(int arg_stack_space) {
EnterExitFramePrologue(true);
// Setup argv in callee-saved register r12. It is reused in LeaveExitFrame,
int offset = StandardFrameConstants::kCallerSPOffset - kPointerSize;
lea(r12, Operand(rbp, r14, times_pointer_size, offset));
- EnterExitFrameEpilogue(result_size, 2);
+ EnterExitFrameEpilogue(arg_stack_space);
}
void MacroAssembler::EnterApiExitFrame(int stack_space,
- int argc,
- int result_size) {
+ int arg_stack_space) {
EnterExitFramePrologue(false);
// Setup argv in callee-saved register r12. It is reused in LeaveExitFrame,
int offset = StandardFrameConstants::kCallerSPOffset - kPointerSize;
lea(r12, Operand(rbp, (stack_space * kPointerSize) + offset));
-#ifndef _WIN64
- ASSERT(argc <= 6); // EnterApiExitFrame supports only register based args.
-#endif
-
- EnterExitFrameEpilogue(result_size, argc);
+ EnterExitFrameEpilogue(arg_stack_space);
}
// debug mode. Expects the number of arguments in register rax and
// sets up the number of arguments in register rdi and the pointer
// to the first argument in register rsi.
- void EnterExitFrame(int result_size = 1);
+ //
+ // Allocates arg_stack_space * kPointerSize memory (not GCed) on the stack
+ // accessible via StackSpaceOperand.
+ void EnterExitFrame(int arg_stack_space = 0);
void EnterApiExitFrame(int stack_space,
- int argc,
- int result_size = 1);
+ int arg_stack_space);
// Leave the current exit frame. Expects/provides the return value in
// register rax:rdx (untouched) and the pointer to the first
// (rcx must be preserverd until TryCallApiFunctionAndReturn). argc is number
// of arguments to be passed in C-function. stack_space * kPointerSize bytes
// will be removed from stack after the call. Saves context (rsi).
- void PrepareCallApiFunction(int stack_space, int argc);
+ // Clobbers rax. Allocates arg_stack_space * kPointerSize inside the exit
+ // frame (not GCed).
+ //
+ // Assumes stack_space GCed references on top of the stack and return address.
+ // After call they will be removed.
+ void PrepareCallApiFunction(int stack_space, int arg_stack_space);
// Calls an API function. Allocates HandleScope, extracts
// returned value from handle and propagates exceptions.
void LeaveFrame(StackFrame::Type type);
void EnterExitFramePrologue(bool save_rax);
- void EnterExitFrameEpilogue(int result_size, int argc);
+
+ // Allocates arg_stack_space * kPointerSize memory (not GCed) on the stack
+ // accessible via StackSpaceOperand.
+ void EnterExitFrameEpilogue(int arg_stack_space);
// Allocation support helpers.
// Loads the top of new-space into the result register.
}
+// Provides access to exit frame stack space (not GCed).
+static inline Operand StackSpaceOperand(int index) {
+#ifdef _WIN64
+ const int kShaddowSpace = 4;
+ return Operand(rsp, (index + kShaddowSpace) * kPointerSize);
+#else
+ return Operand(rsp, index * kPointerSize);
+#endif
+}
+
+
#ifdef GENERATED_CODE_COVERAGE
extern void LogGeneratedCodeCoverage(const char* file_line);
__ ret(0);
}
+// Number of pointers to be reserved on stack for fast API call.
+static const int kFastApiCallArguments = 3;
// Reserves space for the extra arguments to FastHandleApiCall in the
// caller's frame.
// -- rsp[8] : last argument in the internal frame of the caller
// -----------------------------------
__ movq(scratch, Operand(rsp, 0));
- __ subq(rsp, Immediate(4 * kPointerSize));
+ __ subq(rsp, Immediate(kFastApiCallArguments * kPointerSize));
__ movq(Operand(rsp, 0), scratch);
__ Move(scratch, Smi::FromInt(0));
- __ movq(Operand(rsp, 1 * kPointerSize), scratch);
- __ movq(Operand(rsp, 2 * kPointerSize), scratch);
- __ movq(Operand(rsp, 3 * kPointerSize), scratch);
- __ movq(Operand(rsp, 4 * kPointerSize), scratch);
+ for (int i = 1; i <= kFastApiCallArguments; i++) {
+ __ movq(Operand(rsp, i * kPointerSize), scratch);
+ }
}
// Undoes the effects of ReserveSpaceForFastApiCall.
static void FreeSpaceForFastApiCall(MacroAssembler* masm, Register scratch) {
// ----------- S t a t e -------------
- // -- rsp[0] : return address
- // -- rsp[8] : last fast api call extra argument
+ // -- rsp[0] : return address.
+ // -- rsp[8] : last fast api call extra argument.
// -- ...
- // -- rsp[32] : first fast api call extra argument
- // -- rsp[40] : last argument in the internal frame
+ // -- rsp[kFastApiCallArguments * 8] : first fast api call extra argument.
+ // -- rsp[kFastApiCallArguments * 8 + 8] : last argument in the internal
+ // frame.
// -----------------------------------
__ movq(scratch, Operand(rsp, 0));
- __ movq(Operand(rsp, 4 * kPointerSize), scratch);
- __ addq(rsp, Immediate(kPointerSize * 4));
+ __ movq(Operand(rsp, kFastApiCallArguments * kPointerSize), scratch);
+ __ addq(rsp, Immediate(kPointerSize * kFastApiCallArguments));
}
// Generates call to FastHandleApiCall builtin.
-static void GenerateFastApiCall(MacroAssembler* masm,
+static bool GenerateFastApiCall(MacroAssembler* masm,
const CallOptimization& optimization,
- int argc) {
+ int argc,
+ Failure** failure) {
// ----------- S t a t e -------------
// -- rsp[0] : return address
// -- rsp[8] : object passing the type check
// (last fast api call extra argument,
// set by CheckPrototypes)
- // -- rsp[16] : api call data
- // -- rsp[24] : api callback
- // -- rsp[32] : api function
+ // -- rsp[16] : api function
// (first fast api call extra argument)
- // -- rsp[40] : last argument
+ // -- rsp[24] : api call data
+ // -- rsp[32] : last argument
// -- ...
- // -- rsp[(argc + 5) * 8] : first argument
- // -- rsp[(argc + 6) * 8] : receiver
+ // -- rsp[(argc + 3) * 8] : first argument
+ // -- rsp[(argc + 4) * 8] : receiver
// -----------------------------------
// Get the function and setup the context.
__ movq(rsi, FieldOperand(rdi, JSFunction::kContextOffset));
// Pass the additional arguments FastHandleApiCall expects.
- __ movq(Operand(rsp, 4 * kPointerSize), rdi);
- bool info_loaded = false;
- Object* callback = optimization.api_call_info()->callback();
- if (Heap::InNewSpace(callback)) {
- info_loaded = true;
- __ Move(rcx, Handle<CallHandlerInfo>(optimization.api_call_info()));
- __ movq(rbx, FieldOperand(rcx, CallHandlerInfo::kCallbackOffset));
- __ movq(Operand(rsp, 3 * kPointerSize), rbx);
- } else {
- __ Move(Operand(rsp, 3 * kPointerSize), Handle<Object>(callback));
- }
+ __ movq(Operand(rsp, 2 * kPointerSize), rdi);
Object* call_data = optimization.api_call_info()->data();
+ Handle<CallHandlerInfo> api_call_info_handle(optimization.api_call_info());
if (Heap::InNewSpace(call_data)) {
- if (!info_loaded) {
- __ Move(rcx, Handle<CallHandlerInfo>(optimization.api_call_info()));
- }
+ __ Move(rcx, api_call_info_handle);
__ movq(rbx, FieldOperand(rcx, CallHandlerInfo::kDataOffset));
- __ movq(Operand(rsp, 2 * kPointerSize), rbx);
+ __ movq(Operand(rsp, 3 * kPointerSize), rbx);
} else {
- __ Move(Operand(rsp, 2 * kPointerSize), Handle<Object>(call_data));
+ __ Move(Operand(rsp, 3 * kPointerSize), Handle<Object>(call_data));
}
- // Set the number of arguments.
- __ movq(rax, Immediate(argc + 4));
+ // Prepare arguments.
+ __ lea(rbx, Operand(rsp, 3 * kPointerSize));
- // Jump to the fast api call builtin (tail call).
- Handle<Code> code = Handle<Code>(
- Builtins::builtin(Builtins::FastHandleApiCall));
- ParameterCount expected(0);
- __ InvokeCode(code, expected, expected,
- RelocInfo::CODE_TARGET, JUMP_FUNCTION);
+ Object* callback = optimization.api_call_info()->callback();
+ Address api_function_address = v8::ToCData<Address>(callback);
+ ApiFunction fun(api_function_address);
+
+#ifdef _WIN64
+ // Win64 uses first register--rcx--for returned value.
+ Register arguments_arg = rdx;
+#else
+ Register arguments_arg = rdi;
+#endif
+
+ // Allocate the v8::Arguments structure in the arguments' space since
+ // it's not controlled by GC.
+ const int kApiStackSpace = 4;
+
+ __ PrepareCallApiFunction(argc + kFastApiCallArguments + 1, kApiStackSpace);
+
+ __ movq(StackSpaceOperand(0), rbx); // v8::Arguments::implicit_args_.
+ __ addq(rbx, Immediate(argc * kPointerSize));
+ __ movq(StackSpaceOperand(1), rbx); // v8::Arguments::values_.
+ __ Set(StackSpaceOperand(2), argc); // v8::Arguments::length_.
+ // v8::Arguments::is_construct_call_.
+ __ Set(StackSpaceOperand(3), 0);
+
+ // v8::InvocationCallback's argument.
+ __ lea(arguments_arg, StackSpaceOperand(0));
+ // Emitting a stub call may try to allocate (if the code is not
+ // already generated). Do not allow the assembler to perform a
+ // garbage collection but instead return the allocation failure
+ // object.
+ MaybeObject* result =
+ masm->TryCallApiFunctionAndReturn(&fun);
+ if (result->IsFailure()) {
+ *failure = Failure::cast(result);
+ return false;
+ }
+ return true;
}
arguments_(arguments),
name_(name) {}
- void Compile(MacroAssembler* masm,
+ bool Compile(MacroAssembler* masm,
JSObject* object,
JSObject* holder,
String* name,
Register scratch1,
Register scratch2,
Register scratch3,
- Label* miss) {
+ Label* miss,
+ Failure** failure) {
ASSERT(holder->HasNamedInterceptor());
ASSERT(!holder->GetNamedInterceptor()->getter()->IsUndefined());
CallOptimization optimization(lookup);
if (optimization.is_constant_call()) {
- CompileCacheable(masm,
- object,
- receiver,
- scratch1,
- scratch2,
- scratch3,
- holder,
- lookup,
- name,
- optimization,
- miss);
+ return CompileCacheable(masm,
+ object,
+ receiver,
+ scratch1,
+ scratch2,
+ scratch3,
+ holder,
+ lookup,
+ name,
+ optimization,
+ miss,
+ failure);
} else {
CompileRegular(masm,
object,
name,
holder,
miss);
+ return true;
}
}
private:
- void CompileCacheable(MacroAssembler* masm,
+ bool CompileCacheable(MacroAssembler* masm,
JSObject* object,
Register receiver,
Register scratch1,
LookupResult* lookup,
String* name,
const CallOptimization& optimization,
- Label* miss_label) {
+ Label* miss_label,
+ Failure** failure) {
ASSERT(optimization.is_constant_call());
ASSERT(!lookup->holder()->IsGlobalObject());
// Invoke function.
if (can_do_fast_api_call) {
- GenerateFastApiCall(masm, optimization, arguments_.immediate());
+ bool success = GenerateFastApiCall(masm,
+ optimization,
+ arguments_.immediate(),
+ failure);
+ if (!success) {
+ return false;
+ }
} else {
__ InvokeFunction(optimization.constant_function(), arguments_,
JUMP_FUNCTION);
if (can_do_fast_api_call) {
FreeSpaceForFastApiCall(masm, scratch1);
}
+
+ return true;
}
void CompileRegular(MacroAssembler* masm,
}
if (depth != kInvalidProtoDepth) {
- GenerateFastApiCall(masm(), optimization, argc);
+ Failure* failure;
+ bool success = GenerateFastApiCall(masm(), optimization, argc, &failure);
+ if (!success) {
+ return failure;
+ }
} else {
__ InvokeFunction(function, arguments(), JUMP_FUNCTION);
}
__ movq(rdx, Operand(rsp, (argc + 1) * kPointerSize));
CallInterceptorCompiler compiler(this, arguments(), rcx);
- compiler.Compile(masm(),
- object,
- holder,
- name,
- &lookup,
- rdx,
- rbx,
- rdi,
- rax,
- &miss);
+ Failure* failure;
+ bool success = compiler.Compile(masm(),
+ object,
+ holder,
+ name,
+ &lookup,
+ rdx,
+ rbx,
+ rdi,
+ rax,
+ &miss,
+ &failure);
+ if (!success) {
+ return failure;
+ }
// Restore receiver.
__ movq(rdx, Operand(rsp, (argc + 1) * kPointerSize));
projects / platform / upstream / v8.git / commitdiff