Index: src/ppc/frames-ppc.h |
diff --git a/src/ppc/frames-ppc.h b/src/ppc/frames-ppc.h |
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+// Copyright 2014 the V8 project authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+#ifndef V8_PPC_FRAMES_PPC_H_ |
+#define V8_PPC_FRAMES_PPC_H_ |
+ |
+namespace v8 { |
+namespace internal { |
+ |
+ |
+// Register list in load/store instructions |
+// Note that the bit values must match those used in actual instruction encoding |
+const int kNumRegs = 32; |
+ |
+ |
+// Caller-saved/arguments registers |
+const RegList kJSCallerSaved = 1 << 3 | // r3 a1 |
+ 1 << 4 | // r4 a2 |
+ 1 << 5 | // r5 a3 |
+ 1 << 6 | // r6 a4 |
+ 1 << 7 | // r7 a5 |
+ 1 << 8 | // r8 a6 |
+ 1 << 9 | // r9 a7 |
+ 1 << 10 | // r10 a8 |
+ 1 << 11; |
+ |
+const int kNumJSCallerSaved = 9; |
+ |
+// Return the code of the n-th caller-saved register available to JavaScript |
+// e.g. JSCallerSavedReg(0) returns r0.code() == 0 |
+int JSCallerSavedCode(int n); |
+ |
+ |
+// Callee-saved registers preserved when switching from C to JavaScript |
+const RegList kCalleeSaved = 1 << 14 | // r14 |
+ 1 << 15 | // r15 |
+ 1 << 16 | // r16 |
+ 1 << 17 | // r17 |
+ 1 << 18 | // r18 |
+ 1 << 19 | // r19 |
+ 1 << 20 | // r20 |
+ 1 << 21 | // r21 |
+ 1 << 22 | // r22 |
+ 1 << 23 | // r23 |
+ 1 << 24 | // r24 |
+ 1 << 25 | // r25 |
+ 1 << 26 | // r26 |
+ 1 << 27 | // r27 |
+ 1 << 28 | // r28 |
+ 1 << 29 | // r29 |
+ 1 << 30 | // r20 |
+ 1 << 31; // r31 |
+ |
+ |
+const int kNumCalleeSaved = 18; |
+ |
+// Number of registers for which space is reserved in safepoints. Must be a |
+// multiple of 8. |
+// TODO(regis): Only 8 registers may actually be sufficient. Revisit. |
+const int kNumSafepointRegisters = 32; |
+ |
+// Define the list of registers actually saved at safepoints. |
+// Note that the number of saved registers may be smaller than the reserved |
+// space, i.e. kNumSafepointSavedRegisters <= kNumSafepointRegisters. |
+const RegList kSafepointSavedRegisters = kJSCallerSaved | kCalleeSaved; |
+const int kNumSafepointSavedRegisters = kNumJSCallerSaved + kNumCalleeSaved; |
+ |
+// The following constants describe the stack frame linkage area as |
+// defined by the ABI. Note that kNumRequiredStackFrameSlots must |
+// satisfy alignment requirements (rounding up if required). |
+#if V8_TARGET_ARCH_PPC64 && V8_TARGET_LITTLE_ENDIAN |
+// [0] back chain |
+// [1] condition register save area |
+// [2] link register save area |
+// [3] TOC save area |
+// [4] Parameter1 save area |
+// ... |
+// [11] Parameter8 save area |
+// [12] Parameter9 slot (if necessary) |
+// ... |
+const int kNumRequiredStackFrameSlots = 12; |
+const int kStackFrameLRSlot = 2; |
+const int kStackFrameExtraParamSlot = 12; |
+#elif V8_OS_AIX || V8_TARGET_ARCH_PPC64 |
+// [0] back chain |
+// [1] condition register save area |
+// [2] link register save area |
+// [3] reserved for compiler |
+// [4] reserved by binder |
+// [5] TOC save area |
+// [6] Parameter1 save area |
+// ... |
+// [13] Parameter8 save area |
+// [14] Parameter9 slot (if necessary) |
+// ... |
+#if V8_TARGET_ARCH_PPC64 |
+const int kNumRequiredStackFrameSlots = 14; |
+#else |
+const int kNumRequiredStackFrameSlots = 16; |
+#endif |
+const int kStackFrameLRSlot = 2; |
+const int kStackFrameExtraParamSlot = 14; |
+#else |
+// [0] back chain |
+// [1] link register save area |
+// [2] Parameter9 slot (if necessary) |
+// ... |
+const int kNumRequiredStackFrameSlots = 4; |
+const int kStackFrameLRSlot = 1; |
+const int kStackFrameExtraParamSlot = 2; |
+#endif |
+ |
+// ---------------------------------------------------- |
+ |
+ |
+class EntryFrameConstants : public AllStatic { |
+ public: |
+ static const int kCallerFPOffset = |
+ -(StandardFrameConstants::kFixedFrameSizeFromFp + kPointerSize); |
+}; |
+ |
+ |
+class ExitFrameConstants : public AllStatic { |
+ public: |
+#if V8_OOL_CONSTANT_POOL |
+ static const int kFrameSize = 3 * kPointerSize; |
+ static const int kConstantPoolOffset = -3 * kPointerSize; |
+#else |
+ static const int kFrameSize = 2 * kPointerSize; |
+ static const int kConstantPoolOffset = 0; // Not used. |
+#endif |
+ static const int kCodeOffset = -2 * kPointerSize; |
+ static const int kSPOffset = -1 * kPointerSize; |
+ |
+ // The caller fields are below the frame pointer on the stack. |
+ static const int kCallerFPOffset = 0 * kPointerSize; |
+ // The calling JS function is below FP. |
+ static const int kCallerPCOffset = 1 * kPointerSize; |
+ |
+ // FP-relative displacement of the caller's SP. It points just |
+ // below the saved PC. |
+ static const int kCallerSPDisplacement = 2 * kPointerSize; |
+}; |
+ |
+ |
+class JavaScriptFrameConstants : public AllStatic { |
+ public: |
+ // FP-relative. |
+ static const int kLocal0Offset = StandardFrameConstants::kExpressionsOffset; |
+ static const int kLastParameterOffset = +2 * kPointerSize; |
+ static const int kFunctionOffset = StandardFrameConstants::kMarkerOffset; |
+ |
+ // Caller SP-relative. |
+ static const int kParam0Offset = -2 * kPointerSize; |
+ static const int kReceiverOffset = -1 * kPointerSize; |
+}; |
+ |
+ |
+class ArgumentsAdaptorFrameConstants : public AllStatic { |
+ public: |
+ // FP-relative. |
+ static const int kLengthOffset = StandardFrameConstants::kExpressionsOffset; |
+ |
+ static const int kFrameSize = |
+ StandardFrameConstants::kFixedFrameSize + kPointerSize; |
+}; |
+ |
+ |
+class ConstructFrameConstants : public AllStatic { |
+ public: |
+ // FP-relative. |
+ static const int kImplicitReceiverOffset = -6 * kPointerSize; |
+ static const int kConstructorOffset = -5 * kPointerSize; |
+ static const int kLengthOffset = -4 * kPointerSize; |
+ static const int kCodeOffset = StandardFrameConstants::kExpressionsOffset; |
+ |
+ static const int kFrameSize = |
+ StandardFrameConstants::kFixedFrameSize + 4 * kPointerSize; |
+}; |
+ |
+ |
+class InternalFrameConstants : public AllStatic { |
+ public: |
+ // FP-relative. |
+ static const int kCodeOffset = StandardFrameConstants::kExpressionsOffset; |
+}; |
+ |
+ |
+inline Object* JavaScriptFrame::function_slot_object() const { |
+ const int offset = JavaScriptFrameConstants::kFunctionOffset; |
+ return Memory::Object_at(fp() + offset); |
+} |
+ |
+ |
+inline void StackHandler::SetFp(Address slot, Address fp) { |
+ Memory::Address_at(slot) = fp; |
+} |
+} |
+} // namespace v8::internal |
+ |
+#endif // V8_PPC_FRAMES_PPC_H_ |