1 files changed, 92 insertions, 0 deletions
diff --git a/lib/Target/Mips/MCTargetDesc/MipsABIInfo.cpp b/lib/Target/Mips/MCTargetDesc/MipsABIInfo.cpp
new file mode 100644
index 0000000..faf9741
--- /dev/null
+++ b/lib/Target/Mips/MCTargetDesc/MipsABIInfo.cpp
@@ -0,0 +1,92 @@
+//===---- MipsABIInfo.cpp - Information about MIPS ABI's ------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "MipsABIInfo.h"
+#include "MipsRegisterInfo.h"
+#include "llvm/ADT/StringRef.h"
+#include "llvm/ADT/StringSwitch.h"
+#include "llvm/MC/MCTargetOptions.h"
+
+using namespace llvm;
+
+namespace {
+static const MCPhysReg O32IntRegs[4] = {Mips::A0, Mips::A1, Mips::A2, Mips::A3};
+
+static const MCPhysReg Mips64IntRegs[8] = {
+    Mips::A0_64, Mips::A1_64, Mips::A2_64, Mips::A3_64,
+    Mips::T0_64, Mips::T1_64, Mips::T2_64, Mips::T3_64};
+}
+
+const ArrayRef<MCPhysReg> MipsABIInfo::GetByValArgRegs() const {
+  if (IsO32())
+    return makeArrayRef(O32IntRegs);
+  if (IsN32() || IsN64())
+    return makeArrayRef(Mips64IntRegs);
+  llvm_unreachable("Unhandled ABI");
+}
+
+const ArrayRef<MCPhysReg> MipsABIInfo::GetVarArgRegs() const {
+  if (IsO32())
+    return makeArrayRef(O32IntRegs);
+  if (IsN32() || IsN64())
+    return makeArrayRef(Mips64IntRegs);
+  llvm_unreachable("Unhandled ABI");
+}
+
+unsigned MipsABIInfo::GetCalleeAllocdArgSizeInBytes(CallingConv::ID CC) const {
+  if (IsO32())
+    return CC != CallingConv::Fast ? 16 : 0;
+  if (IsN32() || IsN64() || IsEABI())
+    return 0;
+  llvm_unreachable("Unhandled ABI");
+}
+
+MipsABIInfo MipsABIInfo::computeTargetABI(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());
+}