1 files changed, 92 insertions, 1 deletions
diff --git a/lib/Target/PowerPC/PPCFrameInfo.h b/lib/Target/PowerPC/PPCFrameInfo.h
index 1b5893d..2476a33 100644
--- a/lib/Target/PowerPC/PPCFrameInfo.h
+++ b/lib/Target/PowerPC/PPCFrameInfo.h
@@ -14,8 +14,10 @@
 #define POWERPC_FRAMEINFO_H
 
 #include "PPC.h"
+#include "PPCSubtarget.h"
 #include "llvm/Target/TargetFrameInfo.h"
 #include "llvm/Target/TargetMachine.h"
+#include "llvm/ADT/STLExtras.h"
 
 namespace llvm {
 
@@ -85,7 +87,96 @@ public:
     return getLinkageSize(LP64, isMacho) +
            getMinCallArgumentsSize(LP64, isMacho);
   }
-  
+
+  // With the SVR4 ABI, callee-saved registers have fixed offsets on the stack.
+  const std::pair<unsigned, int> *
+  getCalleeSavedSpillSlots(unsigned &NumEntries) const {
+    // Early exit if not using the SVR4 ABI.
+    if (!TM.getSubtarget<PPCSubtarget>().isELF32_ABI()) {
+      NumEntries = 0;
+      return 0;
+    }
+    
+    static const std::pair<unsigned, int> Offsets[] = {
+      // Floating-point register save area offsets.
+      std::pair<unsigned, int>(PPC::F31, -8),
+      std::pair<unsigned, int>(PPC::F30, -16),
+      std::pair<unsigned, int>(PPC::F29, -24),
+      std::pair<unsigned, int>(PPC::F28, -32),
+      std::pair<unsigned, int>(PPC::F27, -40),
+      std::pair<unsigned, int>(PPC::F26, -48),
+      std::pair<unsigned, int>(PPC::F25, -56),
+      std::pair<unsigned, int>(PPC::F24, -64),
+      std::pair<unsigned, int>(PPC::F23, -72),
+      std::pair<unsigned, int>(PPC::F22, -80),
+      std::pair<unsigned, int>(PPC::F21, -88),
+      std::pair<unsigned, int>(PPC::F20, -96),
+      std::pair<unsigned, int>(PPC::F19, -104),
+      std::pair<unsigned, int>(PPC::F18, -112),
+      std::pair<unsigned, int>(PPC::F17, -120),
+      std::pair<unsigned, int>(PPC::F16, -128),
+      std::pair<unsigned, int>(PPC::F15, -136),
+      std::pair<unsigned, int>(PPC::F14, -144),
+        
+      // General register save area offsets.
+      std::pair<unsigned, int>(PPC::R31, -4),
+      std::pair<unsigned, int>(PPC::R30, -8),
+      std::pair<unsigned, int>(PPC::R29, -12),
+      std::pair<unsigned, int>(PPC::R28, -16),
+      std::pair<unsigned, int>(PPC::R27, -20),
+      std::pair<unsigned, int>(PPC::R26, -24),
+      std::pair<unsigned, int>(PPC::R25, -28),
+      std::pair<unsigned, int>(PPC::R24, -32),
+      std::pair<unsigned, int>(PPC::R23, -36),
+      std::pair<unsigned, int>(PPC::R22, -40),
+      std::pair<unsigned, int>(PPC::R21, -44),
+      std::pair<unsigned, int>(PPC::R20, -48),
+      std::pair<unsigned, int>(PPC::R19, -52),
+      std::pair<unsigned, int>(PPC::R18, -56),
+      std::pair<unsigned, int>(PPC::R17, -60),
+      std::pair<unsigned, int>(PPC::R16, -64),
+      std::pair<unsigned, int>(PPC::R15, -68),
+      std::pair<unsigned, int>(PPC::R14, -72),
+
+      // CR save area offset.
+      std::pair<unsigned, int>(PPC::CR2, -4),
+      std::pair<unsigned, int>(PPC::CR3, -4),
+      std::pair<unsigned, int>(PPC::CR4, -4),
+      std::pair<unsigned, int>(PPC::CR2LT, -4),
+      std::pair<unsigned, int>(PPC::CR2GT, -4),
+      std::pair<unsigned, int>(PPC::CR2EQ, -4),
+      std::pair<unsigned, int>(PPC::CR2UN, -4),
+      std::pair<unsigned, int>(PPC::CR3LT, -4),
+      std::pair<unsigned, int>(PPC::CR3GT, -4),
+      std::pair<unsigned, int>(PPC::CR3EQ, -4),
+      std::pair<unsigned, int>(PPC::CR3UN, -4),
+      std::pair<unsigned, int>(PPC::CR4LT, -4),
+      std::pair<unsigned, int>(PPC::CR4GT, -4),
+      std::pair<unsigned, int>(PPC::CR4EQ, -4),
+      std::pair<unsigned, int>(PPC::CR4UN, -4),
+
+      // VRSAVE save area offset.
+      std::pair<unsigned, int>(PPC::VRSAVE, -4),
+      
+      // Vector register save area
+      std::pair<unsigned, int>(PPC::V31, -16),
+      std::pair<unsigned, int>(PPC::V30, -32),
+      std::pair<unsigned, int>(PPC::V29, -48),
+      std::pair<unsigned, int>(PPC::V28, -64),
+      std::pair<unsigned, int>(PPC::V27, -80),
+      std::pair<unsigned, int>(PPC::V26, -96),
+      std::pair<unsigned, int>(PPC::V25, -112),
+      std::pair<unsigned, int>(PPC::V24, -128),
+      std::pair<unsigned, int>(PPC::V23, -144),
+      std::pair<unsigned, int>(PPC::V22, -160),
+      std::pair<unsigned, int>(PPC::V21, -176),
+      std::pair<unsigned, int>(PPC::V20, -192)
+    };
+    
+    NumEntries = array_lengthof(Offsets);
+    
+    return Offsets;
+  }
 };
 
 } // End llvm namespace