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   void printMCInst(const MCInst *MI);
  67
  68   void printSymbolOperand(const MachineOperand &MO);
  69
  70
  71
  72   // These methods are used by the tablegen'erated instruction printer.
  73   void printOperand(const MachineInstr *MI, unsigned OpNo,
  74                     const char *Modifier = 0);
  75   void print_pcrel_imm(const MachineInstr *MI, unsigned OpNo);
  76
  77   void printopaquemem(const MachineInstr *MI, unsigned OpNo) {
  78     printMemReference(MI, OpNo);
  79   }
  80
  81   void printi8mem(const MachineInstr *MI, unsigned OpNo) {
  82     printMemReference(MI, OpNo);
  83   }
  84   void printi16mem(const MachineInstr *MI, unsigned OpNo) {
  85     printMemReference(MI, OpNo);
  86   }
  87   void printi32mem(const MachineInstr *MI, unsigned OpNo) {
  88     printMemReference(MI, OpNo);
  89   }
  90   void printi64mem(const MachineInstr *MI, unsigned OpNo) {
  91     printMemReference(MI, OpNo);
  92   }
  93   void printi128mem(const MachineInstr *MI, unsigned OpNo) {
  94     printMemReference(MI, OpNo);
  95   }
  96   void printi256mem(const MachineInstr *MI, unsigned OpNo) {
  97     printMemReference(MI, OpNo);
  98   }
  99   void printf32mem(const MachineInstr *MI, unsigned OpNo) {
 100     printMemReference(MI, OpNo);
 101   }
 102   void printf64mem(const MachineInstr *MI, unsigned OpNo) {
 103     printMemReference(MI, OpNo);
 104   }
 105   void printf80mem(const MachineInstr *MI, unsigned OpNo) {
 106     printMemReference(MI, OpNo);
 107   }
 108   void printf128mem(const MachineInstr *MI, unsigned OpNo) {
 109     printMemReference(MI, OpNo);
 110   }
 111   void printf256mem(const MachineInstr *MI, unsigned OpNo) {
 112     printMemReference(MI, OpNo);
 113   }
 114   void printlea32mem(const MachineInstr *MI, unsigned OpNo) {
 115     printLeaMemReference(MI, OpNo);
 116   }
 117   void printlea64mem(const MachineInstr *MI, unsigned OpNo) {
 118     printLeaMemReference(MI, OpNo);
 119   }
 120   void printlea64_32mem(const MachineInstr *MI, unsigned OpNo) {
 121     printLeaMemReference(MI, OpNo, "subreg64");
 122   }
 123
 124   bool printAsmMRegister(const MachineOperand &MO, char Mode);
 125   bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
 126                        unsigned AsmVariant, const char *ExtraCode);
 127   bool PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNo,
 128                              unsigned AsmVariant, const char *ExtraCode);
 129
 130   void printMachineInstruction(const MachineInstr *MI);
 131   void printSSECC(const MachineInstr *MI, unsigned Op);
 132   void printMemReference(const MachineInstr *MI, unsigned Op,
 133                          const char *Modifier=NULL);
 134   void printLeaMemReference(const MachineInstr *MI, unsigned Op,
 135                             const char *Modifier=NULL);
 136   void printPICJumpTableSetLabel(unsigned uid,
 137                                  const MachineBasicBlock *MBB) const;
 138   void printPICJumpTableSetLabel(unsigned uid, unsigned uid2,
 139                                  const MachineBasicBlock *MBB) const {
 140     AsmPrinter::printPICJumpTableSetLabel(uid, uid2, MBB);
 141   }
 142   void printPICJumpTableEntry(const MachineJumpTableInfo *MJTI,
 143                               const MachineBasicBlock *MBB,
 144                               unsigned uid) const;
 145
 146   void printPICLabel(const MachineInstr *MI, unsigned Op);
 147   void PrintGlobalVariable(const GlobalVariable* GVar);
 148
 149   void PrintPICBaseSymbol() const;
 150
 151   bool runOnMachineFunction(MachineFunction &F);
 152
 153   void emitFunctionHeader(const MachineFunction &MF);
 154
 155   // Necessary for dllexport support
 156   StringSet<> CygMingStubs, DLLExportedFns, DLLExportedGVs;
 157
 158   // We have to propagate some information about MachineFunction to
 159   // AsmPrinter. It's ok, when we're printing the function, since we have
 160   // access to MachineFunction and can get the appropriate MachineFunctionInfo.
 161   // Unfortunately, this is not possible when we're printing reference to
 162   // Function (e.g. calling it and so on). Even more, there is no way to get the
 163   // corresponding MachineFunctions: it can even be not created at all. That's
 164   // why we should use additional structure, when we're collecting all necessary
 165   // information.
 166   //
 167   // This structure is using e.g. for name decoration for stdcall & fastcall'ed
 168   // function, since we have to use arguments' size for decoration.
 169   typedef std::map<const Function*, X86MachineFunctionInfo> FMFInfoMap;
 170   FMFInfoMap FunctionInfoMap;
 171
 172   void DecorateCygMingName(std::string &Name, const GlobalValue *GV);
 173   void DecorateCygMingName(SmallVectorImpl<char> &Name, const GlobalValue *GV);
 174 };
 175
 176 } // end namespace llvm
 177
 178 #endif