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Issue 1010883002: Switch full-codegen from StackHandlers to handler table. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@local_cleanup-isolate-dead-code
Patch Set: Fix debugger-pause-on-promise-rejection. Created 5 years, 9 months ago
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1 // Copyright 2013 the V8 project authors. All rights reserved. 1 // Copyright 2013 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 "src/v8.h" 5 #include "src/v8.h"
6 6
7 #if V8_TARGET_ARCH_ARM64 7 #if V8_TARGET_ARCH_ARM64
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"
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3031 3031
3032 void MacroAssembler::DebugBreak() { 3032 void MacroAssembler::DebugBreak() {
3033 Mov(x0, 0); 3033 Mov(x0, 0);
3034 Mov(x1, ExternalReference(Runtime::kDebugBreak, isolate())); 3034 Mov(x1, ExternalReference(Runtime::kDebugBreak, isolate()));
3035 CEntryStub ces(isolate(), 1); 3035 CEntryStub ces(isolate(), 1);
3036 DCHECK(AllowThisStubCall(&ces)); 3036 DCHECK(AllowThisStubCall(&ces));
3037 Call(ces.GetCode(), RelocInfo::DEBUG_BREAK); 3037 Call(ces.GetCode(), RelocInfo::DEBUG_BREAK);
3038 } 3038 }
3039 3039
3040 3040
3041 void MacroAssembler::PushTryHandler(StackHandler::Kind kind, 3041 void MacroAssembler::PushStackHandler() {
3042 int handler_index) {
3043 DCHECK(jssp.Is(StackPointer())); 3042 DCHECK(jssp.Is(StackPointer()));
3044 // Adjust this code if the asserts don't hold. 3043 // Adjust this code if the asserts don't hold.
3045 STATIC_ASSERT(StackHandlerConstants::kSize == 3 * kPointerSize); 3044 STATIC_ASSERT(StackHandlerConstants::kSize == 1 * kPointerSize);
3046 STATIC_ASSERT(StackHandlerConstants::kNextOffset == 0 * kPointerSize); 3045 STATIC_ASSERT(StackHandlerConstants::kNextOffset == 0 * kPointerSize);
3047 STATIC_ASSERT(StackHandlerConstants::kStateOffset == 1 * kPointerSize);
3048 STATIC_ASSERT(StackHandlerConstants::kContextOffset == 2 * kPointerSize);
3049 3046
3050 // For the JSEntry handler, we must preserve the live registers x0-x4. 3047 // For the JSEntry handler, we must preserve the live registers x0-x4.
3051 // (See JSEntryStub::GenerateBody().) 3048 // (See JSEntryStub::GenerateBody().)
3052 3049
3053 // Set up the index for pushing.
3054 Mov(x11, handler_index);
3055
3056 // Push the context and state.
3057 if (kind == StackHandler::JS_ENTRY) {
3058 DCHECK(Smi::FromInt(0) == 0);
3059 Push(xzr, x11);
3060 } else {
3061 Push(cp, x11);
3062 }
3063
3064 // Link the current handler as the next handler. 3050 // Link the current handler as the next handler.
3065 Mov(x11, ExternalReference(Isolate::kHandlerAddress, isolate())); 3051 Mov(x11, ExternalReference(Isolate::kHandlerAddress, isolate()));
3066 Ldr(x10, MemOperand(x11)); 3052 Ldr(x10, MemOperand(x11));
3067 Push(x10); 3053 Push(x10);
3054
3068 // Set this new handler as the current one. 3055 // Set this new handler as the current one.
3069 Str(jssp, MemOperand(x11)); 3056 Str(jssp, MemOperand(x11));
3070 } 3057 }
3071 3058
3072 3059
3073 void MacroAssembler::PopTryHandler() { 3060 void MacroAssembler::PopStackHandler() {
3074 STATIC_ASSERT(StackHandlerConstants::kNextOffset == 0); 3061 STATIC_ASSERT(StackHandlerConstants::kNextOffset == 0);
3075 Pop(x10); 3062 Pop(x10);
3076 Mov(x11, ExternalReference(Isolate::kHandlerAddress, isolate())); 3063 Mov(x11, ExternalReference(Isolate::kHandlerAddress, isolate()));
3077 Drop(StackHandlerConstants::kSize - kXRegSize, kByteSizeInBytes); 3064 Drop(StackHandlerConstants::kSize - kXRegSize, kByteSizeInBytes);
3078 Str(x10, MemOperand(x11)); 3065 Str(x10, MemOperand(x11));
3079 } 3066 }
3080 3067
3081 3068
3082 void MacroAssembler::Allocate(int object_size, 3069 void MacroAssembler::Allocate(int object_size,
3083 Register result, 3070 Register result,
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5159 } 5146 }
5160 } 5147 }
5161 5148
5162 5149
5163 #undef __ 5150 #undef __
5164 5151
5165 5152
5166 } } // namespace v8::internal 5153 } } // namespace v8::internal
5167 5154
5168 #endif // V8_TARGET_ARCH_ARM64 5155 #endif // V8_TARGET_ARCH_ARM64
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