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Issue 2090723005: [builtins] New frame type for exits to C++ builtins (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Add missing condition in SafeStackFrameIter::frame() Created 4 years, 5 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 #if V8_TARGET_ARCH_MIPS 7 #if V8_TARGET_ARCH_MIPS
8 8
9 #include "src/base/bits.h" 9 #include "src/base/bits.h"
10 #include "src/base/division-by-constant.h" 10 #include "src/base/division-by-constant.h"
(...skipping 5624 matching lines...) Expand 10 before | Expand all | Expand 10 after
5635 5635
5636 void MacroAssembler::TailCallRuntime(Runtime::FunctionId fid) { 5636 void MacroAssembler::TailCallRuntime(Runtime::FunctionId fid) {
5637 const Runtime::Function* function = Runtime::FunctionForId(fid); 5637 const Runtime::Function* function = Runtime::FunctionForId(fid);
5638 DCHECK_EQ(1, function->result_size); 5638 DCHECK_EQ(1, function->result_size);
5639 if (function->nargs >= 0) { 5639 if (function->nargs >= 0) {
5640 PrepareCEntryArgs(function->nargs); 5640 PrepareCEntryArgs(function->nargs);
5641 } 5641 }
5642 JumpToExternalReference(ExternalReference(fid, isolate())); 5642 JumpToExternalReference(ExternalReference(fid, isolate()));
5643 } 5643 }
5644 5644
5645
5646 void MacroAssembler::JumpToExternalReference(const ExternalReference& builtin, 5645 void MacroAssembler::JumpToExternalReference(const ExternalReference& builtin,
5647 BranchDelaySlot bd) { 5646 BranchDelaySlot bd,
5647 bool builtin_exit_frame) {
5648 PrepareCEntryFunction(builtin); 5648 PrepareCEntryFunction(builtin);
5649 CEntryStub stub(isolate(), 1); 5649 CEntryStub stub(isolate(), 1, kDontSaveFPRegs, kArgvOnStack,
5650 builtin_exit_frame);
5650 Jump(stub.GetCode(), 5651 Jump(stub.GetCode(),
5651 RelocInfo::CODE_TARGET, 5652 RelocInfo::CODE_TARGET,
5652 al, 5653 al,
5653 zero_reg, 5654 zero_reg,
5654 Operand(zero_reg), 5655 Operand(zero_reg),
5655 bd); 5656 bd);
5656 } 5657 }
5657 5658
5658
5659 void MacroAssembler::SetCounter(StatsCounter* counter, int value, 5659 void MacroAssembler::SetCounter(StatsCounter* counter, int value,
5660 Register scratch1, Register scratch2) { 5660 Register scratch1, Register scratch2) {
5661 if (FLAG_native_code_counters && counter->Enabled()) { 5661 if (FLAG_native_code_counters && counter->Enabled()) {
5662 li(scratch1, Operand(value)); 5662 li(scratch1, Operand(value));
5663 li(scratch2, Operand(ExternalReference(counter))); 5663 li(scratch2, Operand(ExternalReference(counter)));
5664 sw(scratch1, MemOperand(scratch2)); 5664 sw(scratch1, MemOperand(scratch2));
5665 } 5665 }
5666 } 5666 }
5667 5667
5668 5668
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5903 Addu(fp, sp, Operand(fp_offset)); 5903 Addu(fp, sp, Operand(fp_offset));
5904 } 5904 }
5905 5905
5906 5906
5907 void MacroAssembler::LeaveFrame(StackFrame::Type type) { 5907 void MacroAssembler::LeaveFrame(StackFrame::Type type) {
5908 addiu(sp, fp, 2 * kPointerSize); 5908 addiu(sp, fp, 2 * kPointerSize);
5909 lw(ra, MemOperand(fp, 1 * kPointerSize)); 5909 lw(ra, MemOperand(fp, 1 * kPointerSize));
5910 lw(fp, MemOperand(fp, 0 * kPointerSize)); 5910 lw(fp, MemOperand(fp, 0 * kPointerSize));
5911 } 5911 }
5912 5912
5913 void MacroAssembler::EnterExitFrame(bool save_doubles, int stack_space) { 5913 void MacroAssembler::EnterExitFrame(bool save_doubles, int stack_space,
5914 StackFrame::Type frame_type) {
5915 DCHECK(frame_type == StackFrame::EXIT ||
5916 frame_type == StackFrame::BUILTIN_EXIT);
5917
5914 // Set up the frame structure on the stack. 5918 // Set up the frame structure on the stack.
5915 STATIC_ASSERT(2 * kPointerSize == ExitFrameConstants::kCallerSPDisplacement); 5919 STATIC_ASSERT(2 * kPointerSize == ExitFrameConstants::kCallerSPDisplacement);
5916 STATIC_ASSERT(1 * kPointerSize == ExitFrameConstants::kCallerPCOffset); 5920 STATIC_ASSERT(1 * kPointerSize == ExitFrameConstants::kCallerPCOffset);
5917 STATIC_ASSERT(0 * kPointerSize == ExitFrameConstants::kCallerFPOffset); 5921 STATIC_ASSERT(0 * kPointerSize == ExitFrameConstants::kCallerFPOffset);
5918 5922
5919 // This is how the stack will look: 5923 // This is how the stack will look:
5920 // fp + 2 (==kCallerSPDisplacement) - old stack's end 5924 // fp + 2 (==kCallerSPDisplacement) - old stack's end
5921 // [fp + 1 (==kCallerPCOffset)] - saved old ra 5925 // [fp + 1 (==kCallerPCOffset)] - saved old ra
5922 // [fp + 0 (==kCallerFPOffset)] - saved old fp 5926 // [fp + 0 (==kCallerFPOffset)] - saved old fp
5923 // [fp - 1 StackFrame::EXIT Smi 5927 // [fp - 1 StackFrame::EXIT Smi
5924 // [fp - 2 (==kSPOffset)] - sp of the called function 5928 // [fp - 2 (==kSPOffset)] - sp of the called function
5925 // [fp - 3 (==kCodeOffset)] - CodeObject 5929 // [fp - 3 (==kCodeOffset)] - CodeObject
5926 // fp - (2 + stack_space + alignment) == sp == [fp - kSPOffset] - top of the 5930 // fp - (2 + stack_space + alignment) == sp == [fp - kSPOffset] - top of the
5927 // new stack (will contain saved ra) 5931 // new stack (will contain saved ra)
5928 5932
5929 // Save registers and reserve room for saved entry sp and code object. 5933 // Save registers and reserve room for saved entry sp and code object.
5930 addiu(sp, sp, -2 * kPointerSize - ExitFrameConstants::kFixedFrameSizeFromFp); 5934 addiu(sp, sp, -2 * kPointerSize - ExitFrameConstants::kFixedFrameSizeFromFp);
5931 sw(ra, MemOperand(sp, 4 * kPointerSize)); 5935 sw(ra, MemOperand(sp, 4 * kPointerSize));
5932 sw(fp, MemOperand(sp, 3 * kPointerSize)); 5936 sw(fp, MemOperand(sp, 3 * kPointerSize));
5933 li(at, Operand(Smi::FromInt(StackFrame::EXIT))); 5937 li(at, Operand(Smi::FromInt(frame_type)));
5934 sw(at, MemOperand(sp, 2 * kPointerSize)); 5938 sw(at, MemOperand(sp, 2 * kPointerSize));
5935 // Set up new frame pointer. 5939 // Set up new frame pointer.
5936 addiu(fp, sp, ExitFrameConstants::kFixedFrameSizeFromFp); 5940 addiu(fp, sp, ExitFrameConstants::kFixedFrameSizeFromFp);
5937 5941
5938 if (emit_debug_code()) { 5942 if (emit_debug_code()) {
5939 sw(zero_reg, MemOperand(fp, ExitFrameConstants::kSPOffset)); 5943 sw(zero_reg, MemOperand(fp, ExitFrameConstants::kSPOffset));
5940 } 5944 }
5941 5945
5942 // Accessed from ExitFrame::code_slot. 5946 // Accessed from ExitFrame::code_slot.
5943 li(t8, Operand(CodeObject()), CONSTANT_SIZE); 5947 li(t8, Operand(CodeObject()), CONSTANT_SIZE);
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6910 if (mag.shift > 0) sra(result, result, mag.shift); 6914 if (mag.shift > 0) sra(result, result, mag.shift);
6911 srl(at, dividend, 31); 6915 srl(at, dividend, 31);
6912 Addu(result, result, Operand(at)); 6916 Addu(result, result, Operand(at));
6913 } 6917 }
6914 6918
6915 6919
6916 } // namespace internal 6920 } // namespace internal
6917 } // namespace v8 6921 } // namespace v8
6918 6922
6919 #endif // V8_TARGET_ARCH_MIPS 6923 #endif // V8_TARGET_ARCH_MIPS
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