MIPS: port ARM: Fix context save/restore for VFP registers.

src/mips/frames-mips.h

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
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 //
 //     * Redistributions of source code must retain the above copyright
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@@ skipping 12 matching lines @@
 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 
 
 #ifndef V8_MIPS_FRAMES_MIPS_H_
 #define V8_MIPS_FRAMES_MIPS_H_
 
-
 namespace v8 {
 namespace internal {
 
 // Register lists.
 // Note that the bit values must match those used in actual instruction
 // encoding.
 static const int kNumRegs = 32;
 
 static const RegList kJSCallerSaved =
   1 << 2 |  // v0
@@ skipping 13 matching lines @@
 // Callee-saved registers preserved when switching from C to JavaScript.
 static const RegList kCalleeSaved =
   // Saved temporaries.
   1 << 16 | 1 << 17 | 1 << 18 | 1 << 19 |
   1 << 20 | 1 << 21 | 1 << 22 | 1 << 23 |
   // fp.
   1 << 30;
 
 static const int kNumCalleeSaved = 9;
 
+static const RegList kCalleeSavedFPU =
+    1 << 20 | 1 << 22 | 1 << 24 | 1 << 26 | 1 << 28 | 1 << 30;

[Yang, 2011/08/31 12:38:44]

Comments similar to those in frames-arm.h would be nice.

[Paul Lind, 2011/09/01 06:50:27]

Done. Refactored the other RegLists too.

+
+static const int kNumCalleeSavedFPU = 6;
 
 // Number of registers for which space is reserved in safepoints. Must be a
 // multiple of 8.
 // TODO(mips): Only 8 registers may actually be sufficient. Revisit.
 static const int kNumSafepointRegisters = 16;
 
 // 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.
 static const RegList kSafepointSavedRegisters = kJSCallerSaved | kCalleeSaved;
@@ skipping 134 matching lines @@
 
 inline Object* JavaScriptFrame::function_slot_object() const {
   const int offset = JavaScriptFrameConstants::kFunctionOffset;
   return Memory::Object_at(fp() + offset);
 }
 
 
 } }  // namespace v8::internal
 
 #endif