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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 // Set up the index for pushing. | 3053 unsigned state = |
3054 Mov(x11, handler_index); | 3054 StackHandler::IndexField::encode(handler_index) | |
| 3055 StackHandler::KindField::encode(kind); |
| 3056 |
| 3057 // Set up the state for pushing. |
| 3058 Mov(x11, state); |
3055 | 3059 |
3056 // Push the context and state. | 3060 // Push the context and state. |
3057 if (kind == StackHandler::JS_ENTRY) { | 3061 if (kind == StackHandler::JS_ENTRY) { |
3058 DCHECK(Smi::FromInt(0) == 0); | 3062 DCHECK(Smi::FromInt(0) == 0); |
3059 Push(xzr, x11); | 3063 Push(xzr, x11); |
3060 } else { | 3064 } else { |
3061 Push(cp, x11); | 3065 Push(cp, x11); |
3062 } | 3066 } |
3063 | 3067 |
3064 // Link the current handler as the next handler. | 3068 // Link the current handler as the next handler. |
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5159 } | 5163 } |
5160 } | 5164 } |
5161 | 5165 |
5162 | 5166 |
5163 #undef __ | 5167 #undef __ |
5164 | 5168 |
5165 | 5169 |
5166 } } // namespace v8::internal | 5170 } } // namespace v8::internal |
5167 | 5171 |
5168 #endif // V8_TARGET_ARCH_ARM64 | 5172 #endif // V8_TARGET_ARCH_ARM64 |
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