Revert r247692: Replace Triple with a new TargetTuple in MCTargetDesc/* and related...

[oota-llvm.git] / lib / Target / Mips / MCTargetDesc / MipsABIInfo.cpp

diff --git a/lib/Target/Mips/MCTargetDesc/MipsABIInfo.cpp b/lib/Target/Mips/MCTargetDesc/MipsABIInfo.cpp
index f885369845e740d00b63f1fccc5fa139d29eb635..bd1feb81d866d36752201462072b10c190193fa2 100644 (file)
--- a/lib/Target/Mips/MCTargetDesc/MipsABIInfo.cpp
+++ b/lib/Target/Mips/MCTargetDesc/MipsABIInfo.cpp
@@ -9,6 +9,9 @@
 
 #include "MipsABIInfo.h"
 #include "MipsRegisterInfo.h"
+#include "llvm/ADT/StringRef.h"
+#include "llvm/ADT/StringSwitch.h"
+#include "llvm/MC/MCTargetOptions.h"
 
 using namespace llvm;
 
@@ -43,3 +46,91 @@ unsigned MipsABIInfo::GetCalleeAllocdArgSizeInBytes(CallingConv::ID CC) const {
     return 0;
   llvm_unreachable("Unhandled ABI");
 }
+
+MipsABIInfo MipsABIInfo::computeTargetABI(const Triple &TT, StringRef CPU,
+                                          const MCTargetOptions &Options) {
+  if (Options.getABIName().startswith("o32"))
+    return MipsABIInfo::O32();
+  else if (Options.getABIName().startswith("n32"))
+    return MipsABIInfo::N32();
+  else if (Options.getABIName().startswith("n64"))
+    return MipsABIInfo::N64();
+  else if (Options.getABIName().startswith("eabi"))
+    return MipsABIInfo::EABI();
+  else if (!Options.getABIName().empty())
+    llvm_unreachable("Unknown ABI option for MIPS");
+
+  // FIXME: This shares code with the selectMipsCPU routine that's
+  // used and not shared in a couple of other places. This needs unifying
+  // at some level.
+  if (CPU.empty() || CPU == "generic") {
+    if (TT.getArch() == Triple::mips || TT.getArch() == Triple::mipsel)
+      CPU = "mips32";
+    else
+      CPU = "mips64";
+  }
+
+  return StringSwitch<MipsABIInfo>(CPU)
+      .Case("mips1", MipsABIInfo::O32())
+      .Case("mips2", MipsABIInfo::O32())
+      .Case("mips32", MipsABIInfo::O32())
+      .Case("mips32r2", MipsABIInfo::O32())
+      .Case("mips32r3", MipsABIInfo::O32())
+      .Case("mips32r5", MipsABIInfo::O32())
+      .Case("mips32r6", MipsABIInfo::O32())
+      .Case("mips16", MipsABIInfo::O32())
+      .Case("mips3", MipsABIInfo::N64())
+      .Case("mips4", MipsABIInfo::N64())
+      .Case("mips5", MipsABIInfo::N64())
+      .Case("mips64", MipsABIInfo::N64())
+      .Case("mips64r2", MipsABIInfo::N64())
+      .Case("mips64r3", MipsABIInfo::N64())
+      .Case("mips64r5", MipsABIInfo::N64())
+      .Case("mips64r6", MipsABIInfo::N64())
+      .Case("octeon", MipsABIInfo::N64())
+      .Default(MipsABIInfo::Unknown());
+}
+
+unsigned MipsABIInfo::GetStackPtr() const {
+  return ArePtrs64bit() ? Mips::SP_64 : Mips::SP;
+}
+
+unsigned MipsABIInfo::GetFramePtr() const {
+  return ArePtrs64bit() ? Mips::FP_64 : Mips::FP;
+}
+
+unsigned MipsABIInfo::GetBasePtr() const {
+  return ArePtrs64bit() ? Mips::S7_64 : Mips::S7;
+}
+
+unsigned MipsABIInfo::GetNullPtr() const {
+  return ArePtrs64bit() ? Mips::ZERO_64 : Mips::ZERO;
+}
+
+unsigned MipsABIInfo::GetZeroReg() const {
+  return AreGprs64bit() ? Mips::ZERO_64 : Mips::ZERO;
+}
+
+unsigned MipsABIInfo::GetPtrAdduOp() const {
+  return ArePtrs64bit() ? Mips::DADDu : Mips::ADDu;
+}
+
+unsigned MipsABIInfo::GetPtrAddiuOp() const {
+  return ArePtrs64bit() ? Mips::DADDiu : Mips::ADDiu;
+}
+
+unsigned MipsABIInfo::GetGPRMoveOp() const {
+  return ArePtrs64bit() ? Mips::OR64 : Mips::OR;
+}
+
+unsigned MipsABIInfo::GetEhDataReg(unsigned I) const {
+  static const unsigned EhDataReg[] = {
+    Mips::A0, Mips::A1, Mips::A2, Mips::A3
+  };
+  static const unsigned EhDataReg64[] = {
+    Mips::A0_64, Mips::A1_64, Mips::A2_64, Mips::A3_64
+  };
+
+  return IsN64() ? EhDataReg64[I] : EhDataReg[I];
+}
+