mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-14 11:32:34 +00:00
Major overhaul to print globals and constants.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@1004 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Vikram S. Adve
parent
9466f5113b
commit
953c83e1ee
@ -10,25 +10,39 @@
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#include "SparcInternals.h"
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#include "llvm/Analysis/SlotCalculator.h"
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#include "llvm/Transforms/Linker.h"
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#include "llvm/CodeGen/MachineInstr.h"
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#include "llvm/GlobalVariable.h"
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#include "llvm/GlobalValue.h"
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#include "llvm/ConstPoolVals.h"
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#include "llvm/DerivedTypes.h"
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#include "llvm/BasicBlock.h"
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#include "llvm/Method.h"
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#include "llvm/Module.h"
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#include "llvm/Support/HashExtras.h"
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#include "llvm/Support/StringExtras.h"
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namespace {
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class SparcAsmPrinter {
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ostream &Out;
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SlotCalculator Table;
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const UltraSparc &Target;
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class SparcAsmPrinter {
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typedef hash_map<const Value*, int> ValIdMap;
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typedef ValIdMap:: iterator ValIdMapIterator;
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typedef ValIdMap::const_iterator ValIdMapConstIterator;
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ostream &Out;
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SlotCalculator Table; // map anonymous values to unique integer IDs
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ValIdMap valToIdMap; // used for values not handled by SlotCalculator
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const UltraSparc &Target;
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enum Sections {
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Unknown,
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Text,
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Data,
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ReadOnly,
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ReadOnlyData,
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InitRWData,
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UninitRWData,
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} CurSection;
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public:
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inline SparcAsmPrinter(ostream &o, const Module *M, const UltraSparc &t)
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: Out(o), Table(SlotCalculator(M, true)), Target(t), CurSection(Unknown) {
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@ -37,18 +51,21 @@ public:
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private :
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void emitModule(const Module *M);
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/*
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void processSymbolTable(const SymbolTable &ST);
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void processConstant(const ConstPoolVal *CPV);
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void processGlobal(const GlobalVariable *GV);
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*/
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void emitMethod(const Method *M);
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void emitGlobalsAndConstants(const Module* module);
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//void processMethodArgument(const MethodArgument *MA);
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void emitBasicBlock(const BasicBlock *BB);
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void emitMachineInst(const MachineInstr *MI);
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void printOperand(const MachineOperand &Op);
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void printGlobalVariable(const GlobalVariable* GV);
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void printConstant(const ConstPoolVal* CV, string valID = string(""));
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unsigned int printOperands(const MachineInstr *MI, unsigned int opNum);
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void printOneOperand(const MachineOperand &Op);
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bool OpIsBranchTargetLabel(const MachineInstr *MI, unsigned int opNum);
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bool OpIsMemoryAddressBase(const MachineInstr *MI, unsigned int opNum);
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// enterSection - Use this method to enter a different section of the output
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// executable. This is used to only output neccesary section transitions.
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//
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@ -56,14 +73,16 @@ private :
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if (S == CurSection) return; // Only switch section if neccesary
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CurSection = S;
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Out << ".section \".";
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switch (S) {
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default: assert(0 && "Bad section name!");
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case Text: Out << "text"; break;
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case Data: Out << "data"; break;
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case ReadOnly: Out << "rodata"; break;
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}
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Out << "\"\n";
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Out << "\n\t.section ";
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switch (S)
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{
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default: assert(0 && "Bad section name!");
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case Text: Out << "\".text\""; break;
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case ReadOnlyData: Out << "\".rodata\",#alloc"; break;
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case InitRWData: Out << "\".data\",#alloc,#write"; break;
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case UninitRWData: Out << "\".bss\",#alloc,#write\nBbss.bss:"; break;
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}
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Out << "\n";
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}
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string getEscapedString(const string &S) {
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@ -75,7 +94,7 @@ private :
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(C >= '0' && C <= '9')) {
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Result += C;
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} else {
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Result += '$';
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Result += '_';
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Result += char('0' + ((unsigned char)C >> 4));
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Result += char('0' + (C & 0xF));
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}
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@ -92,17 +111,33 @@ private :
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if (V->hasName()) {
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return FP + getEscapedString(V->getName());
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} else {
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assert(Table.getValSlot(V) != -1 && "Value not in value table!");
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return FP + string(Prefix) + itostr(Table.getValSlot(V));
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int valId = Table.getValSlot(V);
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if (valId == -1) {
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ValIdMapConstIterator I = valToIdMap.find(V);
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valId = (I == valToIdMap.end())? (valToIdMap[V] = valToIdMap.size())
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: (*I).second;
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}
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return FP + string(Prefix) + itostr(valId);
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}
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}
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// getID Wrappers - Ensure consistent usage...
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string getID(const Method *M) { return getID(M, "anon_method$"); }
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string getID(const BasicBlock *BB) {
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return getID(BB, "LL", (".L$"+getID(BB->getParent())+"$").c_str());
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string getID(const Module *M) {
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return getID(M, "LLVMModule_");
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}
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string getID(const Method *M) {
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return getID(M, "LLVMMethod_");
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}
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string getID(const BasicBlock *BB) {
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return getID(BB, "LL", (".L_"+getID(BB->getParent())+"_").c_str());
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}
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string getID(const GlobalVariable *GV) {
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return getID(GV, "LLVMGlobal_", ".G_");
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}
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string getID(const ConstPoolVal *CV) {
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return getID(CV, "LLVMConst_", ".C_");
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}
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unsigned getOperandMask(unsigned Opcode) {
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switch (Opcode) {
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case SUBcc: return 1 << 3; // Remove CC argument
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@ -110,52 +145,118 @@ private :
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case BRLEZ: case BRLZ:
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case BRNZ: case BRGZ:
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case BRGEZ: return 1 << 0;
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// case RETURN: return 1 << 1; // Remove Arg #2 which is zero
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default: return 0; // By default, don't hack operands...
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}
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}
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};
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void SparcAsmPrinter::printOperand(const MachineOperand &Op) {
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switch (Op.getOperandType()) {
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case MachineOperand::MO_VirtualRegister:
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case MachineOperand::MO_CCRegister:
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case MachineOperand::MO_MachineRegister: {
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int RegNum = (int)Op.getAllocatedRegNum();
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// ****this code is temporary till NULL Values are fixed
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if (RegNum == 10000) {
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Out << "<NULL VALUE>";
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} else {
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Out << "%" << Target.getRegInfo().getUnifiedRegName(RegNum);
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}
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break;
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}
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case MachineOperand::MO_PCRelativeDisp: {
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const Value *Val = Op.getVRegValue();
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if (!Val) {
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Out << "\t<*NULL Value*>";
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} else if (const BasicBlock *BB = dyn_cast<const BasicBlock>(Val)) {
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Out << getID(BB);
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} else if (const Method *M = dyn_cast<const Method>(Val)) {
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Out << getID(M);
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} else {
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Out << "<unknown value=" << Val << ">";
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}
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break;
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}
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default:
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Out << Op; // use dump field
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break;
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inline bool
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SparcAsmPrinter::OpIsBranchTargetLabel(const MachineInstr *MI,
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unsigned int opNum) {
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switch (MI->getOpCode()) {
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case JMPLCALL:
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case JMPLRET: return (opNum == 0);
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default: return false;
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}
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}
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void SparcAsmPrinter::emitMachineInst(const MachineInstr *MI) {
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inline bool
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SparcAsmPrinter::OpIsMemoryAddressBase(const MachineInstr *MI,
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unsigned int opNum) {
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if (Target.getInstrInfo().isLoad(MI->getOpCode()))
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return (opNum == 0);
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else if (Target.getInstrInfo().isStore(MI->getOpCode()))
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return (opNum == 1);
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else
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return false;
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}
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#define PrintOp1PlusOp2(Op1, Op2) \
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printOneOperand(Op1); Out << "+"; printOneOperand(Op2);
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unsigned int
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SparcAsmPrinter::printOperands(const MachineInstr *MI,
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unsigned int opNum)
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{
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const MachineOperand& Op = MI->getOperand(opNum);
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if (OpIsBranchTargetLabel(MI, opNum))
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{
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PrintOp1PlusOp2(Op, MI->getOperand(opNum+1));
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return 2;
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}
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else if (OpIsMemoryAddressBase(MI, opNum))
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{
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Out << "[";
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PrintOp1PlusOp2(Op, MI->getOperand(opNum+1));
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Out << "]";
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return 2;
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}
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else
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{
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printOneOperand(Op);
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return 1;
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}
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}
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void
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SparcAsmPrinter::printOneOperand(const MachineOperand &Op)
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{
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switch (Op.getOperandType())
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{
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case MachineOperand::MO_VirtualRegister:
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case MachineOperand::MO_CCRegister:
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case MachineOperand::MO_MachineRegister:
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{
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int RegNum = (int)Op.getAllocatedRegNum();
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// ****this code is temporary till NULL Values are fixed
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if (RegNum == 10000) {
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Out << "<NULL VALUE>";
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} else {
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Out << "%" << Target.getRegInfo().getUnifiedRegName(RegNum);
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}
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break;
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}
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case MachineOperand::MO_PCRelativeDisp:
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{
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const Value *Val = Op.getVRegValue();
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if (!Val)
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Out << "\t<*NULL Value*>";
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else if (const BasicBlock *BB = dyn_cast<const BasicBlock>(Val))
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Out << getID(BB);
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else if (const Method *M = dyn_cast<const Method>(Val))
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Out << getID(M);
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else if (const GlobalVariable *GV=dyn_cast<const GlobalVariable>(Val))
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Out << getID(GV);
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else if (const ConstPoolVal *CV = dyn_cast<const ConstPoolVal>(Val))
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Out << getID(CV);
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else
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Out << "<unknown value=" << Val << ">";
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break;
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}
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case MachineOperand::MO_SignExtendedImmed:
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case MachineOperand::MO_UnextendedImmed:
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Out << Op.getImmedValue();
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break;
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default:
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Out << Op; // use dump field
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break;
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}
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}
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void
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SparcAsmPrinter::emitMachineInst(const MachineInstr *MI)
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{
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unsigned Opcode = MI->getOpCode();
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if (TargetInstrDescriptors[Opcode].iclass & M_DUMMY_PHI_FLAG)
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@ -163,82 +264,25 @@ void SparcAsmPrinter::emitMachineInst(const MachineInstr *MI) {
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Out << "\t" << TargetInstrDescriptors[Opcode].opCodeString << "\t";
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switch (Opcode) { // Some opcodes have special syntax...
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case JMPLCALL:
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case JMPLRET:
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assert(MI->getNumOperands() == 3 && "Unexpected JMPL instr!");
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printOperand(MI->getOperand(0));
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Out << "+";
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printOperand(MI->getOperand(1));
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Out << ", ";
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printOperand(MI->getOperand(2));
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Out << endl;
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return;
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case RETURN:
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assert(MI->getNumOperands() == 2 && "Unexpected RETURN instr!");
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printOperand(MI->getOperand(0));
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Out << "+";
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printOperand(MI->getOperand(1));
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Out << endl;
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return;
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default: break;
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}
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if( Target.getInstrInfo().isLoad(Opcode) ) { // if Load
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assert(MI->getNumOperands() == 3 && "Loads must have 3 operands");
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Out << "[";
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printOperand(MI->getOperand(0));
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const MachineOperand& ImmOp = MI->getOperand(1);
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if( ImmOp.getImmedValue() >= 0)
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Out << "+";
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printOperand(ImmOp);
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Out << "]";
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Out << ", ";
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printOperand(MI->getOperand(2));
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Out << endl;
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return;
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}
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if( Target.getInstrInfo().isStore(Opcode) ) { // if Store
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assert(MI->getNumOperands() == 3 && "Stores must have 3 operands");
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printOperand(MI->getOperand(0));
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Out << ", ";
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Out << "[";
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printOperand(MI->getOperand(1));
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const MachineOperand& ImmOp = MI->getOperand(2);
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if( ImmOp.getImmedValue() >= 0)
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Out << "+";
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printOperand(ImmOp);
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Out << "]";
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Out << endl;
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return;
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}
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unsigned Mask = getOperandMask(Opcode);
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bool NeedComma = false;
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for(unsigned OpNum = 0; OpNum < MI->getNumOperands(); ++OpNum) {
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if ((1 << OpNum) & Mask) continue; // Ignore this operand?
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const MachineOperand &Op = MI->getOperand(OpNum);
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if (NeedComma) Out << ", "; // Handle comma outputing
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NeedComma = true;
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printOperand(Op);
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}
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unsigned N = 1;
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for (unsigned OpNum = 0; OpNum < MI->getNumOperands(); OpNum += N)
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if (! ((1 << OpNum) & Mask)) { // Ignore this operand?
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if (NeedComma) Out << ", "; // Handle comma outputing
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NeedComma = true;
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N = printOperands(MI, OpNum);
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}
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else
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N = 1;
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Out << endl;
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}
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void SparcAsmPrinter::emitBasicBlock(const BasicBlock *BB) {
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void
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SparcAsmPrinter::emitBasicBlock(const BasicBlock *BB)
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{
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// Emit a label for the basic block
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Out << getID(BB) << ":\n";
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@ -252,7 +296,9 @@ void SparcAsmPrinter::emitBasicBlock(const BasicBlock *BB) {
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Out << "\n"; // Seperate BB's with newlines
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}
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void SparcAsmPrinter::emitMethod(const Method *M) {
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void
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SparcAsmPrinter::emitMethod(const Method *M)
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{
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if (M->isExternal()) return;
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// Make sure the slot table has information about this method...
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@ -261,7 +307,7 @@ void SparcAsmPrinter::emitMethod(const Method *M) {
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string MethName = getID(M);
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Out << "!****** Outputing Method: " << MethName << " ******\n";
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enterSection(Text);
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Out << "\t.align 4\n\t.global\t" << MethName << "\n";
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Out << "\t.align\t4\n\t.global\t" << MethName << "\n";
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//Out << "\t.type\t" << MethName << ",#function\n";
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Out << "\t.type\t" << MethName << ", 2\n";
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Out << MethName << ":\n";
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@ -271,7 +317,8 @@ void SparcAsmPrinter::emitMethod(const Method *M) {
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emitBasicBlock(*I);
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// Output a .size directive so the debugger knows the extents of the function
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Out << ".EndOf$" << MethName << ":\n\t.size " << MethName << ", .EndOf$"
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Out << ".EndOf_" << MethName << ":\n\t.size "
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<< MethName << ", .EndOf_"
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<< MethName << "-" << MethName << endl;
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// Put some spaces between the methods
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@ -281,20 +328,195 @@ void SparcAsmPrinter::emitMethod(const Method *M) {
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Table.purgeMethod();
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}
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inline bool
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ArrayTypeIsString(ArrayType* arrayType)
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{
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return (arrayType->getElementType() == Type::UByteTy ||
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arrayType->getElementType() == Type::SByteTy);
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}
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void SparcAsmPrinter::emitModule(const Module *M) {
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inline const string TypeToDataDirective(const Type* type) {
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switch(type->getPrimitiveID()) {
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case Type::BoolTyID: case Type::UByteTyID: case Type::SByteTyID:
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return ".byte";
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case Type::UShortTyID: case Type::ShortTyID:
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return ".half";
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case Type::UIntTyID: case Type::IntTyID:
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return ".word";
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case Type::ULongTyID: case Type::LongTyID: case Type::PointerTyID:
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return ".xword";
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case Type::FloatTyID:
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return ".float";
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case Type::DoubleTyID:
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return ".double";
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case Type::ArrayTyID:
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if (ArrayTypeIsString((ArrayType*) type))
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return ".ascii";
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else
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return "<InvaliDataTypeForPrinting>";
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default:
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return "<InvaliDataTypeForPrinting>";
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}
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}
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inline unsigned int ConstantToSize(const ConstPoolVal* CV,
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const TargetMachine& target) {
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if (ConstPoolArray* AV = dyn_cast<ConstPoolArray>(CV))
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if (ArrayTypeIsString((ArrayType*) CV->getType()))
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return 1 + AV->getNumOperands();
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return target.findOptimalStorageSize(CV->getType());
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}
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inline
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unsigned int TypeToSize(const Type* type, const TargetMachine& target)
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{
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||||
return target.findOptimalStorageSize(type);
|
||||
}
|
||||
|
||||
|
||||
inline unsigned int
|
||||
TypeToAlignment(const Type* type, const TargetMachine& target)
|
||||
{
|
||||
if (type->getPrimitiveID() == Type::ArrayTyID &&
|
||||
ArrayTypeIsString((ArrayType*) type))
|
||||
return target.findOptimalStorageSize(Type::LongTy);
|
||||
|
||||
return target.findOptimalStorageSize(type);
|
||||
}
|
||||
|
||||
|
||||
void
|
||||
SparcAsmPrinter::printConstant(const ConstPoolVal* CV, string valID)
|
||||
{
|
||||
if (valID.length() == 0)
|
||||
valID = getID(CV);
|
||||
|
||||
Out << "\t.align\t" << TypeToAlignment(CV->getType(), Target)
|
||||
<< endl;
|
||||
|
||||
Out << valID << ":" << endl;
|
||||
|
||||
Out << "\t"
|
||||
<< TypeToDataDirective(CV->getType()) << "\t"
|
||||
<< CV->getStrValue(false) << endl;
|
||||
|
||||
Out << "\t.type" << "\t" << valID << ",#object" << endl;
|
||||
Out << "\t.size" << "\t" << valID << ","
|
||||
<< ConstantToSize(CV, Target) << endl;
|
||||
}
|
||||
|
||||
|
||||
void
|
||||
SparcAsmPrinter::printGlobalVariable(const GlobalVariable* GV)
|
||||
{
|
||||
Out << "\t.global\t" << getID(GV) << endl;
|
||||
|
||||
if (GV->hasInitializer())
|
||||
printConstant(GV->getInitializer(), getID(GV));
|
||||
else {
|
||||
Out << "\t.align" << TypeToAlignment(GV->getType()->getValueType(), Target)
|
||||
<< getID(GV) << ":" << endl;
|
||||
|
||||
Out << "\t.type" << "\t" << getID(GV) << ",#object" << endl;
|
||||
Out << "\t.size" << "\t" << getID(GV) << ","
|
||||
<< TypeToSize(GV->getType()->getValueType(), Target)
|
||||
<< endl;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static void
|
||||
FoldConstPools(const Module *M,
|
||||
hash_set<const ConstPoolVal*>& moduleConstPool) {
|
||||
for (Module::const_iterator I = M->begin(), E = M->end(); I != E; ++I) {
|
||||
const hash_set<const ConstPoolVal*>& pool =
|
||||
(*I)->getMachineCode().getConstantPoolValues();
|
||||
moduleConstPool.insert(pool.begin(), pool.end());
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
void
|
||||
SparcAsmPrinter::emitGlobalsAndConstants(const Module *M)
|
||||
{
|
||||
// First, get the constants there were marked by the code generator for
|
||||
// inclusion in the assembly code data area and fold them all into a
|
||||
// single constant pool since there may be lots of duplicates. Also,
|
||||
// lets force these constants into the slot table so that we can get
|
||||
// unique names for unnamed constants also.
|
||||
//
|
||||
hash_set<const ConstPoolVal*> moduleConstPool;
|
||||
FoldConstPools(M, moduleConstPool);
|
||||
|
||||
// Now, emit the three data sections separately; the cost of I/O should
|
||||
// make up for the cost of extra passes over the globals list!
|
||||
//
|
||||
// Read-only data section (implies initialized)
|
||||
for (Module::const_giterator GI=M->gbegin(), GE=M->gend(); GI != GE; ++GI)
|
||||
{
|
||||
const GlobalVariable* GV = *GI;
|
||||
if (GV->hasInitializer() && GV->isConstant())
|
||||
{
|
||||
if (GI == M->gbegin())
|
||||
enterSection(ReadOnlyData);
|
||||
printGlobalVariable(GV);
|
||||
}
|
||||
}
|
||||
|
||||
for (hash_set<const ConstPoolVal*>::const_iterator I=moduleConstPool.begin(),
|
||||
E = moduleConstPool.end(); I != E; ++I)
|
||||
printConstant(*I);
|
||||
|
||||
// Initialized read-write data section
|
||||
for (Module::const_giterator GI=M->gbegin(), GE=M->gend(); GI != GE; ++GI)
|
||||
{
|
||||
const GlobalVariable* GV = *GI;
|
||||
if (GV->hasInitializer() && ! GV->isConstant())
|
||||
{
|
||||
if (GI == M->gbegin())
|
||||
enterSection(InitRWData);
|
||||
printGlobalVariable(GV);
|
||||
}
|
||||
}
|
||||
|
||||
// Uninitialized read-write data section
|
||||
for (Module::const_giterator GI=M->gbegin(), GE=M->gend(); GI != GE; ++GI)
|
||||
{
|
||||
const GlobalVariable* GV = *GI;
|
||||
if (! GV->hasInitializer())
|
||||
{
|
||||
if (GI == M->gbegin())
|
||||
enterSection(UninitRWData);
|
||||
printGlobalVariable(GV);
|
||||
}
|
||||
}
|
||||
|
||||
Out << endl;
|
||||
}
|
||||
|
||||
|
||||
void
|
||||
SparcAsmPrinter::emitModule(const Module *M)
|
||||
{
|
||||
// TODO: Look for a filename annotation on M to emit a .file directive
|
||||
for (Module::const_iterator I = M->begin(), E = M->end(); I != E; ++I)
|
||||
emitMethod(*I);
|
||||
|
||||
emitGlobalsAndConstants(M);
|
||||
}
|
||||
|
||||
} // End anonymous namespace
|
||||
|
||||
|
||||
//
|
||||
// emitAssembly - Output assembly language code (a .s file) for the specified
|
||||
// method. The specified method must have been compiled before this may be
|
||||
// used.
|
||||
//
|
||||
void UltraSparc::emitAssembly(const Module *M, ostream &Out) const {
|
||||
void
|
||||
UltraSparc::emitAssembly(const Module *M, ostream &Out) const
|
||||
{
|
||||
SparcAsmPrinter Print(Out, M, *this);
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user