1 //===-- ARMAsmPrinter.h - Print machine code to an ARM .s file --*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // ARM Assembly printer class.
12 //===----------------------------------------------------------------------===//
14 #ifndef ARMASMPRINTER_H
15 #define ARMASMPRINTER_H
18 #include "ARMTargetMachine.h"
19 #include "llvm/CodeGen/AsmPrinter.h"
20 #include "llvm/Support/Compiler.h"
33 class LLVM_LIBRARY_VISIBILITY ARMAsmPrinter : public AsmPrinter {
35 /// Subtarget - Keep a pointer to the ARMSubtarget around so that we can
36 /// make the right decision when printing asm code for different targets.
37 const ARMSubtarget *Subtarget;
39 /// AFI - Keep a pointer to ARMFunctionInfo for the current
43 /// MCP - Keep a pointer to constantpool entries of the current
45 const MachineConstantPool *MCP;
47 /// InConstantPool - Maintain state when emitting a sequence of constant
48 /// pool entries so we can properly mark them as data regions.
51 explicit ARMAsmPrinter(TargetMachine &TM, MCStreamer &Streamer)
52 : AsmPrinter(TM, Streamer), AFI(NULL), MCP(NULL), InConstantPool(false) {
53 Subtarget = &TM.getSubtarget<ARMSubtarget>();
56 virtual const char *getPassName() const {
57 return "ARM Assembly Printer";
60 void printOperand(const MachineInstr *MI, int OpNum, raw_ostream &O,
61 const char *Modifier = 0);
63 virtual bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNum,
64 unsigned AsmVariant, const char *ExtraCode,
66 virtual bool PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNum,
68 const char *ExtraCode, raw_ostream &O);
70 void EmitJumpTable(const MachineInstr *MI);
71 void EmitJump2Table(const MachineInstr *MI);
72 virtual void EmitInstruction(const MachineInstr *MI);
73 bool runOnMachineFunction(MachineFunction &F);
75 virtual void EmitConstantPool() {} // we emit constant pools customly!
76 virtual void EmitFunctionBodyEnd();
77 virtual void EmitFunctionEntryLabel();
78 void EmitStartOfAsmFile(Module &M);
79 void EmitEndOfAsmFile(Module &M);
80 void EmitXXStructor(const Constant *CV);
82 // lowerOperand - Convert a MachineOperand into the equivalent MCOperand.
83 bool lowerOperand(const MachineOperand &MO, MCOperand &MCOp);
86 // Helpers for EmitStartOfAsmFile() and EmitEndOfAsmFile()
87 void emitAttributes();
89 // Helper for ELF .o only
90 void emitARMAttributeSection();
92 // Generic helper used to emit e.g. ARMv5 mul pseudos
93 void EmitPatchedInstruction(const MachineInstr *MI, unsigned TargetOpc);
95 void EmitUnwindingInstruction(const MachineInstr *MI);
97 // emitPseudoExpansionLowering - tblgen'erated.
98 bool emitPseudoExpansionLowering(MCStreamer &OutStreamer,
99 const MachineInstr *MI);
102 void PrintDebugValueComment(const MachineInstr *MI, raw_ostream &OS);
104 MachineLocation getDebugValueLocation(const MachineInstr *MI) const;
106 /// EmitDwarfRegOp - Emit dwarf register operation.
107 virtual void EmitDwarfRegOp(const MachineLocation &MLoc) const;
109 virtual unsigned getISAEncoding() {
110 // ARM/Darwin adds ISA to the DWARF info for each function.
111 if (!Subtarget->isTargetDarwin())
113 return Subtarget->isThumb() ?
114 ARM::DW_ISA_ARM_thumb : ARM::DW_ISA_ARM_arm;
117 MCOperand GetSymbolRef(const MachineOperand &MO, const MCSymbol *Symbol);
118 MCSymbol *GetARMSetPICJumpTableLabel2(unsigned uid, unsigned uid2,
119 const MachineBasicBlock *MBB) const;
120 MCSymbol *GetARMJTIPICJumpTableLabel2(unsigned uid, unsigned uid2) const;
122 MCSymbol *GetARMSJLJEHLabel(void) const;
124 MCSymbol *GetARMGVSymbol(const GlobalValue *GV);
126 /// EmitMachineConstantPoolValue - Print a machine constantpool value to
128 virtual void EmitMachineConstantPoolValue(MachineConstantPoolValue *MCPV);
130 } // end namespace llvm