1 //===-- MSP430AsmPrinter.cpp - MSP430 LLVM assembly writer ------------------===//
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 // This file contains a printer that converts from our internal representation
11 // of machine-dependent LLVM code to the MSP430 assembly language.
13 //===----------------------------------------------------------------------===//
15 #define DEBUG_TYPE "asm-printer"
17 #include "MSP430InstrInfo.h"
18 #include "MSP430TargetMachine.h"
19 #include "llvm/Constants.h"
20 #include "llvm/DerivedTypes.h"
21 #include "llvm/Module.h"
22 #include "llvm/CodeGen/AsmPrinter.h"
23 #include "llvm/CodeGen/DwarfWriter.h"
24 #include "llvm/CodeGen/MachineModuleInfo.h"
25 #include "llvm/CodeGen/MachineFunctionPass.h"
26 #include "llvm/CodeGen/MachineConstantPool.h"
27 #include "llvm/CodeGen/MachineInstr.h"
28 #include "llvm/Target/TargetAsmInfo.h"
29 #include "llvm/Target/TargetData.h"
30 #include "llvm/ADT/Statistic.h"
31 #include "llvm/Support/Compiler.h"
32 #include "llvm/Support/Mangler.h"
33 #include "llvm/Support/raw_ostream.h"
37 STATISTIC(EmittedInsts, "Number of machine instrs printed");
40 class VISIBILITY_HIDDEN MSP430AsmPrinter : public AsmPrinter {
42 MSP430AsmPrinter(raw_ostream &O, MSP430TargetMachine &TM,
43 const TargetAsmInfo *TAI, bool Fast, bool Verbose)
44 : AsmPrinter(O, TM, TAI, Fast, Verbose) {}
46 virtual const char *getPassName() const {
47 return "MSP430 Assembly Printer";
50 void printOperand(const MachineInstr *MI, int OpNum,
51 const char* Modifier = 0);
52 void printSrcMemOperand(const MachineInstr *MI, int OpNum,
53 const char* Modifier = 0);
54 void printCCOperand(const MachineInstr *MI, int OpNum);
55 bool printInstruction(const MachineInstr *MI); // autogenerated.
56 void printMachineInstruction(const MachineInstr * MI);
57 bool runOnMachineFunction(MachineFunction &F);
58 bool doInitialization(Module &M);
59 bool doFinalization(Module &M);
61 void getAnalysisUsage(AnalysisUsage &AU) const {
62 AsmPrinter::getAnalysisUsage(AU);
66 } // end of anonymous namespace
68 #include "MSP430GenAsmWriter.inc"
70 /// createMSP430CodePrinterPass - Returns a pass that prints the MSP430
71 /// assembly code for a MachineFunction to the given output stream,
72 /// using the given target machine description. This should work
73 /// regardless of whether the function is in SSA form.
75 FunctionPass *llvm::createMSP430CodePrinterPass(raw_ostream &o,
76 MSP430TargetMachine &tm,
77 bool fast, bool verbose) {
78 return new MSP430AsmPrinter(o, tm, tm.getTargetAsmInfo(), fast, verbose);
81 bool MSP430AsmPrinter::doInitialization(Module &M) {
82 Mang = new Mangler(M, "", TAI->getPrivateGlobalPrefix());
83 return false; // success
87 bool MSP430AsmPrinter::doFinalization(Module &M) {
88 return AsmPrinter::doFinalization(M);
91 bool MSP430AsmPrinter::runOnMachineFunction(MachineFunction &MF) {
92 // Print out code for the function.
93 for (MachineFunction::const_iterator I = MF.begin(), E = MF.end();
95 // Print a label for the basic block.
96 if (I != MF.begin()) {
97 printBasicBlockLabel(I, true , true);
101 for (MachineBasicBlock::const_iterator II = I->begin(), E = I->end();
103 // Print the assembly for the instruction.
105 printMachineInstruction(II);
108 // Each Basic Block is separated by a newline
112 // We didn't modify anything
116 void MSP430AsmPrinter::printMachineInstruction(const MachineInstr *MI) {
119 // Call the autogenerated instruction printer routines.
120 if (printInstruction(MI))
123 assert(0 && "Should not happen");
126 void MSP430AsmPrinter::printOperand(const MachineInstr *MI, int OpNum,
127 const char* Modifier) {
128 const MachineOperand &MO = MI->getOperand(OpNum);
129 switch (MO.getType()) {
130 case MachineOperand::MO_Register:
131 assert (TargetRegisterInfo::isPhysicalRegister(MO.getReg()) &&
132 "Virtual registers should be already mapped!");
133 O << TM.getRegisterInfo()->get(MO.getReg()).AsmName;
135 case MachineOperand::MO_Immediate:
136 if (!Modifier || strcmp(Modifier, "nohash"))
140 case MachineOperand::MO_MachineBasicBlock:
141 printBasicBlockLabel(MO.getMBB());
143 case MachineOperand::MO_GlobalAddress: {
144 bool isMemOp = Modifier && !strcmp(Modifier, "mem");
145 bool isCallOp = Modifier && !strcmp(Modifier, "call");
146 std::string Name = Mang->getValueName(MO.getGlobal());
147 assert(MO.getOffset() == 0 && "No offsets allowed!");
158 case MachineOperand::MO_ExternalSymbol: {
159 bool isCallOp = Modifier && !strcmp(Modifier, "call");
160 std::string Name(TAI->getGlobalPrefix());
161 Name += MO.getSymbolName();
168 assert(0 && "Not implemented yet!");
172 void MSP430AsmPrinter::printSrcMemOperand(const MachineInstr *MI, int OpNum,
173 const char* Modifier) {
174 const MachineOperand &Base = MI->getOperand(OpNum);
175 const MachineOperand &Disp = MI->getOperand(OpNum+1);
178 printOperand(MI, OpNum, "mem");
179 else if (Disp.isImm() && !Base.getReg())
180 printOperand(MI, OpNum);
181 else if (Base.getReg()) {
183 printOperand(MI, OpNum + 1, "nohash");
185 printOperand(MI, OpNum);
189 printOperand(MI, OpNum);
192 assert(0 && "Unsupported memory operand");
195 void MSP430AsmPrinter::printCCOperand(const MachineInstr *MI, int OpNum) {
196 unsigned CC = MI->getOperand(OpNum).getImm();
200 assert(0 && "Unsupported CC code");
205 case MSP430::COND_NE:
208 case MSP430::COND_HS:
211 case MSP430::COND_LO:
214 case MSP430::COND_GE: