1 files changed, 133 insertions, 0 deletions
diff --git a/lib/Target/Mips/MipsTargetMachine.cpp b/lib/Target/Mips/MipsTargetMachine.cpp
new file mode 100644
index 0000000..ef524e3
--- /dev/null
+++ b/lib/Target/Mips/MipsTargetMachine.cpp
@@ -0,0 +1,133 @@
+//===-- MipsTargetMachine.cpp - Define TargetMachine for Mips -------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// Implements the info about Mips target spec.
+//
+//===----------------------------------------------------------------------===//
+
+#include "Mips.h"
+#include "MipsTargetAsmInfo.h"
+#include "MipsTargetMachine.h"
+#include "llvm/Module.h"
+#include "llvm/PassManager.h"
+#include "llvm/Target/TargetMachineRegistry.h"
+using namespace llvm;
+
+/// MipsTargetMachineModule - Note that this is used on hosts that
+/// cannot link in a library unless there are references into the
+/// library.  In particular, it seems that it is not possible to get
+/// things to work on Win32 without this.  Though it is unused, do not
+/// remove it.
+extern "C" int MipsTargetMachineModule;
+int MipsTargetMachineModule = 0;
+
+// Register the target.
+static RegisterTarget<MipsTargetMachine>    X("mips", "Mips");
+static RegisterTarget<MipselTargetMachine>  Y("mipsel", "Mipsel");
+
+const TargetAsmInfo *MipsTargetMachine::
+createTargetAsmInfo() const 
+{
+  return new MipsTargetAsmInfo(*this);
+}
+
+// DataLayout --> Big-endian, 32-bit pointer/ABI/alignment
+// The stack is always 8 byte aligned
+// On function prologue, the stack is created by decrementing
+// its pointer. Once decremented, all references are done with positive
+// offset from the stack/frame pointer, using StackGrowsUp enables 
+// an easier handling.
+// Using CodeModel::Large enables different CALL behavior.
+MipsTargetMachine::
+MipsTargetMachine(const Module &M, const std::string &FS, bool isLittle=false):
+  Subtarget(*this, M, FS, isLittle), 
+  DataLayout(isLittle ? std::string("e-p:32:32:32-i8:8:32-i16:16:32") :
+                        std::string("E-p:32:32:32-i8:8:32-i16:16:32")), 
+  InstrInfo(*this), 
+  FrameInfo(TargetFrameInfo::StackGrowsUp, 8, 0),
+  TLInfo(*this) 
+{
+  // Abicall enables PIC by default
+  if (Subtarget.hasABICall())
+    setRelocationModel(Reloc::PIC_);  
+
+  // TODO: create an option to enable long calls, like -mlong-calls, 
+  // that would be our CodeModel::Large. It must not work with Abicall.
+  if (getCodeModel() == CodeModel::Default)
+    setCodeModel(CodeModel::Small);
+}
+
+MipselTargetMachine::
+MipselTargetMachine(const Module &M, const std::string &FS) :
+  MipsTargetMachine(M, FS, true) {}
+
+// return 0 and must specify -march to gen MIPS code.
+unsigned MipsTargetMachine::
+getModuleMatchQuality(const Module &M) 
+{
+  // We strongly match "mips*-*".
+  std::string TT = M.getTargetTriple();
+  if (TT.size() >= 5 && std::string(TT.begin(), TT.begin()+5) == "mips-")
+    return 20;
+  
+  if (TT.size() >= 13 && std::string(TT.begin(), 
+      TT.begin()+13) == "mipsallegrex-")
+    return 20;
+
+  return 0;
+}
+
+// return 0 and must specify -march to gen MIPSEL code.
+unsigned MipselTargetMachine::
+getModuleMatchQuality(const Module &M) 
+{
+  // We strongly match "mips*el-*".
+  std::string TT = M.getTargetTriple();
+  if (TT.size() >= 7 && std::string(TT.begin(), TT.begin()+7) == "mipsel-")
+    return 20;
+
+  if (TT.size() >= 15 && std::string(TT.begin(), 
+      TT.begin()+15) == "mipsallegrexel-")
+    return 20;
+
+  if (TT.size() == 3 && std::string(TT.begin(), TT.begin()+3) == "psp")
+    return 20;
+  
+  return 0;
+}
+
+// Install an instruction selector pass using 
+// the ISelDag to gen Mips code.
+bool MipsTargetMachine::
+addInstSelector(PassManagerBase &PM, CodeGenOpt::Level OptLevel) 
+{
+  PM.add(createMipsISelDag(*this));
+  return false;
+}
+
+// Implemented by targets that want to run passes immediately before 
+// machine code is emitted. return true if -print-machineinstrs should 
+// print out the code after the passes.
+bool MipsTargetMachine::
+addPreEmitPass(PassManagerBase &PM, CodeGenOpt::Level OptLevel) 
+{
+  PM.add(createMipsDelaySlotFillerPass(*this));
+  return true;
+}
+
+// Implements the AssemblyEmitter for the target. Must return
+// true if AssemblyEmitter is supported
+bool MipsTargetMachine::
+addAssemblyEmitter(PassManagerBase &PM, CodeGenOpt::Level OptLevel, 
+                   bool Verbose, raw_ostream &Out) 
+{
+  // Output assembly language.
+  PM.add(createMipsCodePrinterPass(Out, *this, OptLevel, Verbose));
+  return false;
+}