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
  34 class VISIBILITY_HIDDEN X86ATTAsmPrinter : public AsmPrinter {
  35   const X86Subtarget *Subtarget;
  36  public:
  37   explicit X86ATTAsmPrinter(formatted_raw_ostream &O, TargetMachine &TM,
  38                             const TargetAsmInfo *T, bool V)
  39     : AsmPrinter(O, TM, T, V) {
  40     Subtarget = &TM.getSubtarget<X86Subtarget>();
  41   }
  42
  43   virtual const char *getPassName() const {
  44     return "X86 AT&T-Style Assembly Printer";
  45   }
  46
  47   void getAnalysisUsage(AnalysisUsage &AU) const {
  48     AU.setPreservesAll();
  49     if (Subtarget->isTargetDarwin() ||
  50         Subtarget->isTargetELF() ||
  51         Subtarget->isTargetCygMing()) {
  52       AU.addRequired<MachineModuleInfo>();
  53     }
  54     AU.addRequired<DwarfWriter>();
  55     AsmPrinter::getAnalysisUsage(AU);
  56   }
  57
  58   bool doFinalization(Module &M);
  59
  60   /// printInstruction - This method is automatically generated by tablegen
  61   /// from the instruction set description.  This method returns true if the
  62   /// machine instruction was sufficiently described to print it, otherwise it
  63   /// returns false.
  64   bool printInstruction(const MachineInstr *MI);
  65
  66
  67   // New MCInst printing stuff.
  68   bool printInstruction(const MCInst *MI);
  69
  70   void printSymbolOperand(const MachineOperand &MO);
  71   void printOperand(const MCInst *MI, unsigned OpNo,
  72                     const char *Modifier = 0);
  73   void printMemReference(const MCInst *MI, unsigned Op);
  74   void printLeaMemReference(const MCInst *MI, unsigned Op);
  75   void printSSECC(const MCInst *MI, unsigned Op);
  76   void printPICLabel(const MCInst *MI, unsigned Op);
  77   void print_pcrel_imm(const MCInst *MI, unsigned OpNo);
  78
  79   void printi8mem(const MCInst *MI, unsigned OpNo) {
  80     printMemReference(MI, OpNo);
  81   }
  82   void printi16mem(const MCInst *MI, unsigned OpNo) {
  83     printMemReference(MI, OpNo);
  84   }
  85   void printi32mem(const MCInst *MI, unsigned OpNo) {
  86     printMemReference(MI, OpNo);
  87   }
  88   void printi64mem(const MCInst *MI, unsigned OpNo) {
  89     printMemReference(MI, OpNo);
  90   }
  91   void printi128mem(const MCInst *MI, unsigned OpNo) {
  92     printMemReference(MI, OpNo);
  93   }
  94   void printf32mem(const MCInst *MI, unsigned OpNo) {
  95     printMemReference(MI, OpNo);
  96   }
  97   void printf64mem(const MCInst *MI, unsigned OpNo) {
  98     printMemReference(MI, OpNo);
  99   }
 100   void printf80mem(const MCInst *MI, unsigned OpNo) {
 101     printMemReference(MI, OpNo);
 102   }
 103   void printf128mem(const MCInst *MI, unsigned OpNo) {
 104     printMemReference(MI, OpNo);
 105   }
 106   void printlea32mem(const MCInst *MI, unsigned OpNo) {
 107     printLeaMemReference(MI, OpNo);
 108   }
 109   void printlea64mem(const MCInst *MI, unsigned OpNo) {
 110     printLeaMemReference(MI, OpNo);
 111   }
 112   void printlea64_32mem(const MCInst *MI, unsigned OpNo) {
 113     printLeaMemReference(MI, OpNo);
 114   }
 115
 116
 117
 118   // These methods are used by the tablegen'erated instruction printer.
 119   void printOperand(const MachineInstr *MI, unsigned OpNo,
 120                     const char *Modifier = 0);
 121   void print_pcrel_imm(const MachineInstr *MI, unsigned OpNo);
 122   void printi8mem(const MachineInstr *MI, unsigned OpNo) {
 123     printMemReference(MI, OpNo);
 124   }
 125   void printi16mem(const MachineInstr *MI, unsigned OpNo) {
 126     printMemReference(MI, OpNo);
 127   }
 128   void printi32mem(const MachineInstr *MI, unsigned OpNo) {
 129     printMemReference(MI, OpNo);
 130   }
 131   void printi64mem(const MachineInstr *MI, unsigned OpNo) {
 132     printMemReference(MI, OpNo);
 133   }
 134   void printi128mem(const MachineInstr *MI, unsigned OpNo) {
 135     printMemReference(MI, OpNo);
 136   }
 137   void printi256mem(const MachineInstr *MI, unsigned OpNo) {
 138     printMemReference(MI, OpNo);
 139   }
 140   void printf32mem(const MachineInstr *MI, unsigned OpNo) {
 141     printMemReference(MI, OpNo);
 142   }
 143   void printf64mem(const MachineInstr *MI, unsigned OpNo) {
 144     printMemReference(MI, OpNo);
 145   }
 146   void printf80mem(const MachineInstr *MI, unsigned OpNo) {
 147     printMemReference(MI, OpNo);
 148   }
 149   void printf128mem(const MachineInstr *MI, unsigned OpNo) {
 150     printMemReference(MI, OpNo);
 151   }
 152   void printf256mem(const MachineInstr *MI, unsigned OpNo) {
 153     printMemReference(MI, OpNo);
 154   }
 155   void printlea32mem(const MachineInstr *MI, unsigned OpNo) {
 156     printLeaMemReference(MI, OpNo);
 157   }
 158   void printlea64mem(const MachineInstr *MI, unsigned OpNo) {
 159     printLeaMemReference(MI, OpNo);
 160   }
 161   void printlea64_32mem(const MachineInstr *MI, unsigned OpNo) {
 162     printLeaMemReference(MI, OpNo, "subreg64");
 163   }
 164
 165   bool printAsmMRegister(const MachineOperand &MO, char Mode);
 166   bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
 167                        unsigned AsmVariant, const char *ExtraCode);
 168   bool PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNo,
 169                              unsigned AsmVariant, const char *ExtraCode);
 170
 171   void printMachineInstruction(const MachineInstr *MI);
 172   void printSSECC(const MachineInstr *MI, unsigned Op);
 173   void printMemReference(const MachineInstr *MI, unsigned Op,
 174                          const char *Modifier=NULL);
 175   void printLeaMemReference(const MachineInstr *MI, unsigned Op,
 176                             const char *Modifier=NULL);
 177   void printPICJumpTableSetLabel(unsigned uid,
 178                                  const MachineBasicBlock *MBB) const;
 179   void printPICJumpTableSetLabel(unsigned uid, unsigned uid2,
 180                                  const MachineBasicBlock *MBB) const {
 181     AsmPrinter::printPICJumpTableSetLabel(uid, uid2, MBB);
 182   }
 183   void printPICJumpTableEntry(const MachineJumpTableInfo *MJTI,
 184                               const MachineBasicBlock *MBB,
 185                               unsigned uid) const;
 186
 187   void printPICLabel(const MachineInstr *MI, unsigned Op);
 188   void PrintGlobalVariable(const GlobalVariable* GVar);
 189
 190   void PrintPICBaseSymbol() const;
 191
 192   bool runOnMachineFunction(MachineFunction &F);
 193
 194   void emitFunctionHeader(const MachineFunction &MF);
 195
 196   // Necessary for Darwin to print out the apprioriate types of linker stubs
 197   StringMap<std::string> FnStubs, GVStubs, HiddenGVStubs;
 198
 199   // Necessary for dllexport support
 200   StringSet<> CygMingStubs, DLLExportedFns, DLLExportedGVs;
 201
 202   // We have to propagate some information about MachineFunction to
 203   // AsmPrinter. It's ok, when we're printing the function, since we have
 204   // access to MachineFunction and can get the appropriate MachineFunctionInfo.
 205   // Unfortunately, this is not possible when we're printing reference to
 206   // Function (e.g. calling it and so on). Even more, there is no way to get the
 207   // corresponding MachineFunctions: it can even be not created at all. That's
 208   // why we should use additional structure, when we're collecting all necessary
 209   // information.
 210   //
 211   // This structure is using e.g. for name decoration for stdcall & fastcall'ed
 212   // function, since we have to use arguments' size for decoration.
 213   typedef std::map<const Function*, X86MachineFunctionInfo> FMFInfoMap;
 214   FMFInfoMap FunctionInfoMap;
 215
 216   void DecorateCygMingName(std::string &Name, const GlobalValue *GV);
 217 };
 218
 219 } // end namespace llvm
 220
 221 #endif