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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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| 3043 DCHECK(jssp.Is(StackPointer())); | 3043 DCHECK(jssp.Is(StackPointer())); |
| 3044 // Adjust this code if the asserts don't hold. | 3044 // Adjust this code if the asserts don't hold. |
| 3045 STATIC_ASSERT(StackHandlerConstants::kSize == 3 * kPointerSize); | 3045 STATIC_ASSERT(StackHandlerConstants::kSize == 3 * kPointerSize); |
| 3046 STATIC_ASSERT(StackHandlerConstants::kNextOffset == 0 * kPointerSize); | 3046 STATIC_ASSERT(StackHandlerConstants::kNextOffset == 0 * kPointerSize); |
| 3047 STATIC_ASSERT(StackHandlerConstants::kStateOffset == 1 * kPointerSize); | 3047 STATIC_ASSERT(StackHandlerConstants::kStateOffset == 1 * kPointerSize); |
| 3048 STATIC_ASSERT(StackHandlerConstants::kContextOffset == 2 * kPointerSize); | 3048 STATIC_ASSERT(StackHandlerConstants::kContextOffset == 2 * kPointerSize); |
| 3049 | 3049 |
| 3050 // For the JSEntry handler, we must preserve the live registers x0-x4. | 3050 // For the JSEntry handler, we must preserve the live registers x0-x4. |
| 3051 // (See JSEntryStub::GenerateBody().) | 3051 // (See JSEntryStub::GenerateBody().) |
| 3052 | 3052 |
| 3053 unsigned state = | 3053 // Set up the index for pushing. |
| 3054 StackHandler::IndexField::encode(handler_index) | | 3054 Mov(x11, handler_index); |
| 3055 StackHandler::KindField::encode(kind); | |
| 3056 | |
| 3057 // Set up the state for pushing. | |
| 3058 Mov(x11, state); | |
| 3059 | 3055 |
| 3060 // Push the context and state. | 3056 // Push the context and state. |
| 3061 if (kind == StackHandler::JS_ENTRY) { | 3057 if (kind == StackHandler::JS_ENTRY) { |
| 3062 DCHECK(Smi::FromInt(0) == 0); | 3058 DCHECK(Smi::FromInt(0) == 0); |
| 3063 Push(xzr, x11); | 3059 Push(xzr, x11); |
| 3064 } else { | 3060 } else { |
| 3065 Push(cp, x11); | 3061 Push(cp, x11); |
| 3066 } | 3062 } |
| 3067 | 3063 |
| 3068 // Link the current handler as the next handler. | 3064 // Link the current handler as the next handler. |
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| 5163 } | 5159 } |
| 5164 } | 5160 } |
| 5165 | 5161 |
| 5166 | 5162 |
| 5167 #undef __ | 5163 #undef __ |
| 5168 | 5164 |
| 5169 | 5165 |
| 5170 } } // namespace v8::internal | 5166 } } // namespace v8::internal |
| 5171 | 5167 |
| 5172 #endif // V8_TARGET_ARCH_ARM64 | 5168 #endif // V8_TARGET_ARCH_ARM64 |
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