1 //===-- X86AsmPrinter.h - Convert X86 LLVM code to Intel assembly ---------===//
3 // The LLVM Compiler Infrastructure
5 // This file was developed by the LLVM research group and is distributed under
6 // the University of Illinois Open Source License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file the shared super class printer that converts from our internal
11 // representation of machine-dependent LLVM code to Intel and AT&T format
12 // assembly language. This printer is the output mechanism used by `llc'.
14 //===----------------------------------------------------------------------===//
16 #ifndef X86ASMPRINTER_H
17 #define X86ASMPRINTER_H
20 #include "X86TargetMachine.h"
21 #include "llvm/CodeGen/AsmPrinter.h"
22 #include "llvm/CodeGen/DwarfWriter.h"
23 #include "llvm/CodeGen/MachineDebugInfo.h"
24 #include "llvm/ADT/Statistic.h"
30 extern Statistic<> EmittedInsts;
32 /// X86DwarfWriter - Dwarf debug info writer customized for Darwin/Mac OS X
34 struct X86DwarfWriter : public DwarfWriter {
35 X86DwarfWriter(std::ostream &o, AsmPrinter *ap) : DwarfWriter(o, ap) {
37 DwarfAbbrevSection = ".section __DWARFA,__debug_abbrev";
38 DwarfInfoSection = ".section __DWARFA,__debug_info";
39 DwarfLineSection = ".section __DWARFA,__debug_line";
40 DwarfFrameSection = ".section __DWARFA,__debug_frame";
41 DwarfPubNamesSection = ".section __DWARFA,__debug_pubnames";
42 DwarfPubTypesSection = ".section __DWARFA,__debug_pubtypes";
43 DwarfStrSection = ".section __DWARFA,__debug_str";
44 DwarfLocSection = ".section __DWARFA,__debug_loc";
45 DwarfARangesSection = ".section __DWARFA,__debug_aranges";
46 DwarfRangesSection = ".section __DWARFA,__debug_ranges";
47 DwarfMacInfoSection = ".section __DWARFA,__debug_macinfo";
48 TextSection = ".text";
49 DataSection = ".data";
51 virtual void virtfn(); // out of line virtual fn.
54 struct X86SharedAsmPrinter : public AsmPrinter {
57 X86SharedAsmPrinter(std::ostream &O, X86TargetMachine &TM)
58 : AsmPrinter(O, TM), DW(O, this) {
59 Subtarget = &TM.getSubtarget<X86Subtarget>();
62 bool doInitialization(Module &M);
63 bool doFinalization(Module &M);
65 void getAnalysisUsage(AnalysisUsage &AU) const {
67 AU.addRequired<MachineDebugInfo>();
68 MachineFunctionPass::getAnalysisUsage(AU);
71 const char *DefaultTextSection; // "_text" for MASM, ".text" for others.
72 const char *DefaultDataSection; // "_data" for MASM, ".data" for others.
73 const X86Subtarget *Subtarget;
75 // Necessary for Darwin to print out the apprioriate types of linker stubs
76 std::set<std::string> FnStubs, GVStubs, LinkOnceStubs;
78 inline static bool isScale(const MachineOperand &MO) {
79 return MO.isImmediate() &&
80 (MO.getImmedValue() == 1 || MO.getImmedValue() == 2 ||
81 MO.getImmedValue() == 4 || MO.getImmedValue() == 8);
84 inline static bool isMem(const MachineInstr *MI, unsigned Op) {
85 if (MI->getOperand(Op).isFrameIndex()) return true;
86 return Op+4 <= MI->getNumOperands() &&
87 MI->getOperand(Op ).isRegister() && isScale(MI->getOperand(Op+1)) &&
88 MI->getOperand(Op+2).isRegister() &&
89 (MI->getOperand(Op+3).isImmediate() ||
90 MI->getOperand(Op+3).isGlobalAddress() ||
91 MI->getOperand(Op+3).isConstantPoolIndex());
95 } // end namespace llvm