lib/Target/X86/AsmPrinter/X86ATTAsmPrinter.h

   1 //===-- X86ATTAsmPrinter.h - Convert X86 LLVM code to AT&T assembly -------===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9 //
  10 // AT&T assembly code printer class.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #ifndef X86ATTASMPRINTER_H
  15 #define X86ATTASMPRINTER_H
  16
  17 #include "../X86.h"
  18 #include "../X86MachineFunctionInfo.h"
  19 #include "../X86TargetMachine.h"
  20 #include "llvm/ADT/StringSet.h"
  21 #include "llvm/CodeGen/AsmPrinter.h"
  22 #include "llvm/CodeGen/DwarfWriter.h"
  23 #include "llvm/CodeGen/MachineModuleInfo.h"
  24 #include "llvm/CodeGen/ValueTypes.h"
  25 #include "llvm/Support/Compiler.h"
  26
  27 namespace llvm {
  28
  29 class MachineJumpTableInfo;
  30 class MCContext;
  31 class MCInst;
  32 class MCStreamer;
  33 class MCSymbol;
  34
  35 class VISIBILITY_HIDDEN X86ATTAsmPrinter : public AsmPrinter {
  36   const X86Subtarget *Subtarget;
  37  public:
  38   explicit X86ATTAsmPrinter(formatted_raw_ostream &O, TargetMachine &TM,
  39                             const MCAsmInfo *T, bool V)
  40     : AsmPrinter(O, TM, T, V) {
  41     Subtarget = &TM.getSubtarget<X86Subtarget>();
  42   }
  43
  44   virtual const char *getPassName() const {
  45     return "X86 AT&T-Style Assembly Printer";
  46   }
  47
  48   const X86Subtarget &getSubtarget() const { return *Subtarget; }
  49
  50   void getAnalysisUsage(AnalysisUsage &AU) const {
  51     AU.setPreservesAll();
  52     if (Subtarget->isTargetDarwin() ||
  53         Subtarget->isTargetELF() ||
  54         Subtarget->isTargetCygMing()) {
  55       AU.addRequired<MachineModuleInfo>();
  56     }
  57     AU.addRequired<DwarfWriter>();
  58     AsmPrinter::getAnalysisUsage(AU);
  59   }
  60
  61   bool doFinalization(Module &M);
  62
  63   void printInstructionThroughMCStreamer(const MachineInstr *MI);
  64
  65
  66   // FIXME: REMOVE.
  67   virtual void printMCInst(const MCInst *MI);
  68
  69   void printSymbolOperand(const MachineOperand &MO);
  70
  71
  72
  73   // These methods are used by the tablegen'erated instruction printer.
  74   void printOperand(const MachineInstr *MI, unsigned OpNo,
  75                     const char *Modifier = 0);
  76   void print_pcrel_imm(const MachineInstr *MI, unsigned OpNo);
  77
  78   void printopaquemem(const MachineInstr *MI, unsigned OpNo) {
  79     printMemReference(MI, OpNo);
  80   }
  81
  82   void printi8mem(const MachineInstr *MI, unsigned OpNo) {
  83     printMemReference(MI, OpNo);
  84   }
  85   void printi16mem(const MachineInstr *MI, unsigned OpNo) {
  86     printMemReference(MI, OpNo);
  87   }
  88   void printi32mem(const MachineInstr *MI, unsigned OpNo) {
  89     printMemReference(MI, OpNo);
  90   }
  91   void printi64mem(const MachineInstr *MI, unsigned OpNo) {
  92     printMemReference(MI, OpNo);
  93   }
  94   void printi128mem(const MachineInstr *MI, unsigned OpNo) {
  95     printMemReference(MI, OpNo);
  96   }
  97   void printi256mem(const MachineInstr *MI, unsigned OpNo) {
  98     printMemReference(MI, OpNo);
  99   }
 100   void printf32mem(const MachineInstr *MI, unsigned OpNo) {
 101     printMemReference(MI, OpNo);
 102   }
 103   void printf64mem(const MachineInstr *MI, unsigned OpNo) {
 104     printMemReference(MI, OpNo);
 105   }
 106   void printf80mem(const MachineInstr *MI, unsigned OpNo) {
 107     printMemReference(MI, OpNo);
 108   }
 109   void printf128mem(const MachineInstr *MI, unsigned OpNo) {
 110     printMemReference(MI, OpNo);
 111   }
 112   void printf256mem(const MachineInstr *MI, unsigned OpNo) {
 113     printMemReference(MI, OpNo);
 114   }
 115   void printlea32mem(const MachineInstr *MI, unsigned OpNo) {
 116     printLeaMemReference(MI, OpNo);
 117   }
 118   void printlea64mem(const MachineInstr *MI, unsigned OpNo) {
 119     printLeaMemReference(MI, OpNo);
 120   }
 121   void printlea64_32mem(const MachineInstr *MI, unsigned OpNo) {
 122     printLeaMemReference(MI, OpNo, "subreg64");
 123   }
 124
 125   bool printAsmMRegister(const MachineOperand &MO, char Mode);
 126   bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
 127                        unsigned AsmVariant, const char *ExtraCode);
 128   bool PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNo,
 129                              unsigned AsmVariant, const char *ExtraCode);
 130
 131   void printMachineInstruction(const MachineInstr *MI);
 132   void printSSECC(const MachineInstr *MI, unsigned Op);
 133   void printMemReference(const MachineInstr *MI, unsigned Op,
 134                          const char *Modifier=NULL);
 135   void printLeaMemReference(const MachineInstr *MI, unsigned Op,
 136                             const char *Modifier=NULL);
 137   void printPICJumpTableSetLabel(unsigned uid,
 138                                  const MachineBasicBlock *MBB) const;
 139   void printPICJumpTableSetLabel(unsigned uid, unsigned uid2,
 140                                  const MachineBasicBlock *MBB) const {
 141     AsmPrinter::printPICJumpTableSetLabel(uid, uid2, MBB);
 142   }
 143   void printPICJumpTableEntry(const MachineJumpTableInfo *MJTI,
 144                               const MachineBasicBlock *MBB,
 145                               unsigned uid) const;
 146
 147   void printPICLabel(const MachineInstr *MI, unsigned Op);
 148   void PrintGlobalVariable(const GlobalVariable* GVar);
 149
 150   void PrintPICBaseSymbol() const;
 151
 152   bool runOnMachineFunction(MachineFunction &F);
 153
 154   void emitFunctionHeader(const MachineFunction &MF);
 155
 156   // Necessary for Darwin to print out the appropriate types of linker stubs.
 157   DenseMap<MCSymbol*, MCSymbol*> FnStubs;  // Darwin $stub stubs.
 158   DenseMap<MCSymbol*, MCSymbol*> GVStubs;  // Darwin $non_lazy_ptr stub.
 159   DenseMap<MCSymbol*, MCSymbol*> HiddenGVStubs;  // Darwin $non_lazy_ptr stub.
 160
 161   // Necessary for dllexport support
 162   StringSet<> CygMingStubs, DLLExportedFns, DLLExportedGVs;
 163
 164   // We have to propagate some information about MachineFunction to
 165   // AsmPrinter. It's ok, when we're printing the function, since we have
 166   // access to MachineFunction and can get the appropriate MachineFunctionInfo.
 167   // Unfortunately, this is not possible when we're printing reference to
 168   // Function (e.g. calling it and so on). Even more, there is no way to get the
 169   // corresponding MachineFunctions: it can even be not created at all. That's
 170   // why we should use additional structure, when we're collecting all necessary
 171   // information.
 172   //
 173   // This structure is using e.g. for name decoration for stdcall & fastcall'ed
 174   // function, since we have to use arguments' size for decoration.
 175   typedef std::map<const Function*, X86MachineFunctionInfo> FMFInfoMap;
 176   FMFInfoMap FunctionInfoMap;
 177
 178   void DecorateCygMingName(std::string &Name, const GlobalValue *GV);
 179   void DecorateCygMingName(SmallVectorImpl<char> &Name, const GlobalValue *GV);
 180 };
 181
 182 } // end namespace llvm
 183
 184 #endif