PPC: Clean up register save/restore logic.

src/ppc/frames-ppc.h

 // 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 {
 
@@ skipping 37 matching lines @@
                              1 << 26 |  // r26
                              1 << 27 |  // r27
                              1 << 28 |  // r28
                              1 << 29 |  // r29
                              1 << 30 |  // r20
                              1 << 31;   // r31
 
 
 const int kNumCalleeSaved = 18;
 
+const RegList kCallerSavedDoubles = 1 << 0 |   // d0
+                                    1 << 1 |   // d1
+                                    1 << 2 |   // d2
+                                    1 << 3 |   // d3
+                                    1 << 4 |   // d4
+                                    1 << 5 |   // d5
+                                    1 << 6 |   // d6
+                                    1 << 7 |   // d7
+                                    1 << 8 |   // d8
+                                    1 << 9 |   // d9
+                                    1 << 10 |  // d10
+                                    1 << 11 |  // d11
+                                    1 << 12 |  // d12
+                                    1 << 13;   // d13
+
+const RegList kCalleeSavedDoubles = 1 << 14 |  // d14
+                                    1 << 15 |  // d15
+                                    1 << 16 |  // d16
+                                    1 << 17 |  // d17
+                                    1 << 18 |  // d18
+                                    1 << 19 |  // d19
+                                    1 << 20 |  // d20
+                                    1 << 21 |  // d21
+                                    1 << 22 |  // d22
+                                    1 << 23 |  // d23
+                                    1 << 24 |  // d24
+                                    1 << 25 |  // d25
+                                    1 << 26 |  // d26
+                                    1 << 27 |  // d27
+                                    1 << 28 |  // d28
+                                    1 << 29 |  // d29
+                                    1 << 30 |  // d30
+                                    1 << 31;   // d31
+
+const int kNumCalleeSavedDoubles = 18;
+
+
 // Number of registers for which space is reserved in safepoints. Must be a
 // multiple of 8.
 const int kNumSafepointRegisters = 32;
 
 // 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
@@ skipping 77 matching lines @@
   // Caller SP-relative.
   static const int kParam0Offset = -2 * kPointerSize;
   static const int kReceiverOffset = -1 * kPointerSize;
 };
 
 
 }
 }  // namespace v8::internal
 
 #endif  // V8_PPC_FRAMES_PPC_H_