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Issue 860013002: move CallApiFunctionAndReturn to code-stubs-* (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Created 5 years, 11 months ago
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1 // Copyright 2012 the V8 project authors. All rights reserved. 1 // Copyright 2012 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #include <limits.h> // For LONG_MIN, LONG_MAX. 5 #include <limits.h> // For LONG_MIN, LONG_MAX.
6 6
7 #include "src/v8.h" 7 #include "src/v8.h"
8 8
9 #if V8_TARGET_ARCH_MIPS 9 #if V8_TARGET_ARCH_MIPS
10 10
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4406 4406
4407 void MacroAssembler::TailCallStub(CodeStub* stub, 4407 void MacroAssembler::TailCallStub(CodeStub* stub,
4408 Condition cond, 4408 Condition cond,
4409 Register r1, 4409 Register r1,
4410 const Operand& r2, 4410 const Operand& r2,
4411 BranchDelaySlot bd) { 4411 BranchDelaySlot bd) {
4412 Jump(stub->GetCode(), RelocInfo::CODE_TARGET, cond, r1, r2, bd); 4412 Jump(stub->GetCode(), RelocInfo::CODE_TARGET, cond, r1, r2, bd);
4413 } 4413 }
4414 4414
4415 4415
4416 static int AddressOffset(ExternalReference ref0, ExternalReference ref1) {
4417 return ref0.address() - ref1.address();
4418 }
4419
4420
4421 void MacroAssembler::CallApiFunctionAndReturn(
4422 Register function_address, ExternalReference thunk_ref, int stack_space,
4423 MemOperand* stack_space_operand, MemOperand return_value_operand,
4424 MemOperand* context_restore_operand) {
4425 ExternalReference next_address =
4426 ExternalReference::handle_scope_next_address(isolate());
4427 const int kNextOffset = 0;
4428 const int kLimitOffset = AddressOffset(
4429 ExternalReference::handle_scope_limit_address(isolate()),
4430 next_address);
4431 const int kLevelOffset = AddressOffset(
4432 ExternalReference::handle_scope_level_address(isolate()),
4433 next_address);
4434
4435 DCHECK(function_address.is(a1) || function_address.is(a2));
4436
4437 Label profiler_disabled;
4438 Label end_profiler_check;
4439 li(t9, Operand(ExternalReference::is_profiling_address(isolate())));
4440 lb(t9, MemOperand(t9, 0));
4441 Branch(&profiler_disabled, eq, t9, Operand(zero_reg));
4442
4443 // Additional parameter is the address of the actual callback.
4444 li(t9, Operand(thunk_ref));
4445 jmp(&end_profiler_check);
4446
4447 bind(&profiler_disabled);
4448 mov(t9, function_address);
4449 bind(&end_profiler_check);
4450
4451 // Allocate HandleScope in callee-save registers.
4452 li(s3, Operand(next_address));
4453 lw(s0, MemOperand(s3, kNextOffset));
4454 lw(s1, MemOperand(s3, kLimitOffset));
4455 lw(s2, MemOperand(s3, kLevelOffset));
4456 Addu(s2, s2, Operand(1));
4457 sw(s2, MemOperand(s3, kLevelOffset));
4458
4459 if (FLAG_log_timer_events) {
4460 FrameScope frame(this, StackFrame::MANUAL);
4461 PushSafepointRegisters();
4462 PrepareCallCFunction(1, a0);
4463 li(a0, Operand(ExternalReference::isolate_address(isolate())));
4464 CallCFunction(ExternalReference::log_enter_external_function(isolate()), 1);
4465 PopSafepointRegisters();
4466 }
4467
4468 // Native call returns to the DirectCEntry stub which redirects to the
4469 // return address pushed on stack (could have moved after GC).
4470 // DirectCEntry stub itself is generated early and never moves.
4471 DirectCEntryStub stub(isolate());
4472 stub.GenerateCall(this, t9);
4473
4474 if (FLAG_log_timer_events) {
4475 FrameScope frame(this, StackFrame::MANUAL);
4476 PushSafepointRegisters();
4477 PrepareCallCFunction(1, a0);
4478 li(a0, Operand(ExternalReference::isolate_address(isolate())));
4479 CallCFunction(ExternalReference::log_leave_external_function(isolate()), 1);
4480 PopSafepointRegisters();
4481 }
4482
4483 Label promote_scheduled_exception;
4484 Label exception_handled;
4485 Label delete_allocated_handles;
4486 Label leave_exit_frame;
4487 Label return_value_loaded;
4488
4489 // Load value from ReturnValue.
4490 lw(v0, return_value_operand);
4491 bind(&return_value_loaded);
4492
4493 // No more valid handles (the result handle was the last one). Restore
4494 // previous handle scope.
4495 sw(s0, MemOperand(s3, kNextOffset));
4496 if (emit_debug_code()) {
4497 lw(a1, MemOperand(s3, kLevelOffset));
4498 Check(eq, kUnexpectedLevelAfterReturnFromApiCall, a1, Operand(s2));
4499 }
4500 Subu(s2, s2, Operand(1));
4501 sw(s2, MemOperand(s3, kLevelOffset));
4502 lw(at, MemOperand(s3, kLimitOffset));
4503 Branch(&delete_allocated_handles, ne, s1, Operand(at));
4504
4505 // Check if the function scheduled an exception.
4506 bind(&leave_exit_frame);
4507 LoadRoot(t0, Heap::kTheHoleValueRootIndex);
4508 li(at, Operand(ExternalReference::scheduled_exception_address(isolate())));
4509 lw(t1, MemOperand(at));
4510 Branch(&promote_scheduled_exception, ne, t0, Operand(t1));
4511 bind(&exception_handled);
4512
4513 bool restore_context = context_restore_operand != NULL;
4514 if (restore_context) {
4515 lw(cp, *context_restore_operand);
4516 }
4517 if (stack_space_operand != NULL) {
4518 lw(s0, *stack_space_operand);
4519 } else {
4520 li(s0, Operand(stack_space));
4521 }
4522 LeaveExitFrame(false, s0, !restore_context, EMIT_RETURN,
4523 stack_space_operand != NULL);
4524
4525 bind(&promote_scheduled_exception);
4526 {
4527 FrameScope frame(this, StackFrame::INTERNAL);
4528 CallExternalReference(
4529 ExternalReference(Runtime::kPromoteScheduledException, isolate()),
4530 0);
4531 }
4532 jmp(&exception_handled);
4533
4534 // HandleScope limit has changed. Delete allocated extensions.
4535 bind(&delete_allocated_handles);
4536 sw(s1, MemOperand(s3, kLimitOffset));
4537 mov(s0, v0);
4538 mov(a0, v0);
4539 PrepareCallCFunction(1, s1);
4540 li(a0, Operand(ExternalReference::isolate_address(isolate())));
4541 CallCFunction(ExternalReference::delete_handle_scope_extensions(isolate()),
4542 1);
4543 mov(v0, s0);
4544 jmp(&leave_exit_frame);
4545 }
4546
4547
4548 bool MacroAssembler::AllowThisStubCall(CodeStub* stub) { 4416 bool MacroAssembler::AllowThisStubCall(CodeStub* stub) {
4549 return has_frame_ || !stub->SometimesSetsUpAFrame(); 4417 return has_frame_ || !stub->SometimesSetsUpAFrame();
4550 } 4418 }
4551 4419
4552 4420
4553 void MacroAssembler::IndexFromHash(Register hash, Register index) { 4421 void MacroAssembler::IndexFromHash(Register hash, Register index) {
4554 // If the hash field contains an array index pick it out. The assert checks 4422 // If the hash field contains an array index pick it out. The assert checks
4555 // that the constants for the maximum number of digits for an array index 4423 // that the constants for the maximum number of digits for an array index
4556 // cached in the hash field and the number of bits reserved for it does not 4424 // cached in the hash field and the number of bits reserved for it does not
4557 // conflict. 4425 // conflict.
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6276 } 6144 }
6277 if (mag.shift > 0) sra(result, result, mag.shift); 6145 if (mag.shift > 0) sra(result, result, mag.shift);
6278 srl(at, dividend, 31); 6146 srl(at, dividend, 31);
6279 Addu(result, result, Operand(at)); 6147 Addu(result, result, Operand(at));
6280 } 6148 }
6281 6149
6282 6150
6283 } } // namespace v8::internal 6151 } } // namespace v8::internal
6284 6152
6285 #endif // V8_TARGET_ARCH_MIPS 6153 #endif // V8_TARGET_ARCH_MIPS
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