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| 1 // Copyright 2013 the V8 project authors. All rights reserved. | |
| 2 // Redistribution and use in source and binary forms, with or without | |
| 3 // modification, are permitted provided that the following conditions are | |
| 4 // met: | |
| 5 // | |
| 6 // * Redistributions of source code must retain the above copyright | |
| 7 // notice, this list of conditions and the following disclaimer. | |
| 8 // * Redistributions in binary form must reproduce the above | |
| 9 // copyright notice, this list of conditions and the following | |
| 10 // disclaimer in the documentation and/or other materials provided | |
| 11 // with the distribution. | |
| 12 // * Neither the name of Google Inc. nor the names of its | |
| 13 // contributors may be used to endorse or promote products derived | |
| 14 // from this software without specific prior written permission. | |
| 15 // | |
| 16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
| 17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
| 18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
| 19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
| 20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
| 21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
| 22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
| 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
| 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
| 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 27 | |
| 28 #include "a64/constants-a64.h" | |
| 29 #include "a64/assembler-a64.h" | |
| 30 | |
| 31 #ifndef V8_A64_FRAMES_A64_H_ | |
| 32 #define V8_A64_FRAMES_A64_H_ | |
| 33 | |
| 34 namespace v8 { | |
| 35 namespace internal { | |
| 36 | |
| 37 const int kNumRegs = kNumberOfRegisters; | |
| 38 // Registers x0-x17 are caller-saved. | |
| 39 const int kNumJSCallerSaved = 18; | |
| 40 const RegList kJSCallerSaved = 0x3ffff; | |
| 41 typedef Object* JSCallerSavedBuffer[kNumJSCallerSaved]; | |
| 42 | |
| 43 // Number of registers for which space is reserved in safepoints. Must be a | |
| 44 // multiple of eight. | |
| 45 // TODO(all): Refine this number. | |
| 46 const int kNumSafepointRegisters = 32; | |
| 47 | |
| 48 // Define the list of registers actually saved at safepoints. | |
| 49 // Note that the number of saved registers may be smaller than the reserved | |
| 50 // space, i.e. kNumSafepointSavedRegisters <= kNumSafepointRegisters. | |
| 51 #define kSafepointSavedRegisters CPURegList::GetSafepointSavedRegisters().list() | |
| 52 #define kNumSafepointSavedRegisters \ | |
| 53 CPURegList::GetSafepointSavedRegisters().Count(); | |
| 54 | |
| 55 class EntryFrameConstants : public AllStatic { | |
| 56 public: | |
| 57 static const int kCallerFPOffset = | |
| 58 -(StandardFrameConstants::kFixedFrameSizeFromFp + kPointerSize); | |
| 59 }; | |
| 60 | |
| 61 | |
| 62 class ExitFrameConstants : public AllStatic { | |
| 63 public: | |
| 64 static const int kFrameSize = 2 * kPointerSize; | |
| 65 | |
| 66 static const int kCallerSPDisplacement = 2 * kPointerSize; | |
| 67 static const int kCallerPCOffset = 1 * kPointerSize; | |
| 68 static const int kCallerFPOffset = 0 * kPointerSize; // <- fp | |
| 69 static const int kSPOffset = -1 * kPointerSize; | |
| 70 static const int kCodeOffset = -2 * kPointerSize; | |
| 71 static const int kLastExitFrameField = kCodeOffset; | |
| 72 | |
| 73 static const int kConstantPoolOffset = 0; // Not used | |
| 74 }; | |
| 75 | |
| 76 | |
| 77 class JavaScriptFrameConstants : public AllStatic { | |
| 78 public: | |
| 79 // FP-relative. | |
| 80 static const int kLocal0Offset = StandardFrameConstants::kExpressionsOffset; | |
| 81 | |
| 82 // There are two words on the stack (saved fp and saved lr) between fp and | |
| 83 // the arguments. | |
| 84 static const int kLastParameterOffset = 2 * kPointerSize; | |
| 85 | |
| 86 static const int kFunctionOffset = StandardFrameConstants::kMarkerOffset; | |
| 87 }; | |
| 88 | |
| 89 | |
| 90 class ArgumentsAdaptorFrameConstants : public AllStatic { | |
| 91 public: | |
| 92 // FP-relative. | |
| 93 static const int kLengthOffset = StandardFrameConstants::kExpressionsOffset; | |
| 94 | |
| 95 static const int kFrameSize = | |
| 96 StandardFrameConstants::kFixedFrameSize + kPointerSize; | |
| 97 }; | |
| 98 | |
| 99 | |
| 100 class ConstructFrameConstants : public AllStatic { | |
| 101 public: | |
| 102 // FP-relative. | |
| 103 static const int kCodeOffset = StandardFrameConstants::kExpressionsOffset; | |
| 104 static const int kLengthOffset = -4 * kPointerSize; | |
| 105 static const int kConstructorOffset = -5 * kPointerSize; | |
| 106 static const int kImplicitReceiverOffset = -6 * kPointerSize; | |
| 107 | |
| 108 static const int kFrameSize = | |
| 109 StandardFrameConstants::kFixedFrameSize + 4 * kPointerSize; | |
| 110 }; | |
| 111 | |
| 112 | |
| 113 class InternalFrameConstants : public AllStatic { | |
| 114 public: | |
| 115 // FP-relative. | |
| 116 static const int kCodeOffset = StandardFrameConstants::kExpressionsOffset; | |
| 117 }; | |
| 118 | |
| 119 | |
| 120 inline Object* JavaScriptFrame::function_slot_object() const { | |
| 121 const int offset = JavaScriptFrameConstants::kFunctionOffset; | |
| 122 return Memory::Object_at(fp() + offset); | |
| 123 } | |
| 124 | |
| 125 | |
| 126 inline void StackHandler::SetFp(Address slot, Address fp) { | |
| 127 Memory::Address_at(slot) = fp; | |
| 128 } | |
| 129 | |
| 130 | |
| 131 } } // namespace v8::internal | |
| 132 | |
| 133 #endif // V8_A64_FRAMES_A64_H_ | |
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Chromium Code Reviews
Issue 207823003:
Rename A64 port to ARM64 port (Closed)
Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge