mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-21 03:29:40 +00:00
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15932 91177308-0d34-0410-b5e6-96231b3b80d8
701 lines
22 KiB
C++
701 lines
22 KiB
C++
//===-- PPC64AsmPrinter.cpp - Print machine instrs to PowerPC assembly ----===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file was developed by the LLVM research group and is distributed under
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// the University of Illinois Open Source License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file contains a printer that converts from our internal representation
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// of machine-dependent LLVM code to PowerPC assembly language. This printer is
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// the output mechanism used by `llc'.
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//
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//===----------------------------------------------------------------------===//
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#define DEBUG_TYPE "asmprinter"
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#include "PowerPC.h"
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#include "PowerPCInstrInfo.h"
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#include "PPC64TargetMachine.h"
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#include "llvm/Constants.h"
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#include "llvm/DerivedTypes.h"
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#include "llvm/Module.h"
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#include "llvm/Assembly/Writer.h"
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#include "llvm/CodeGen/MachineConstantPool.h"
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#include "llvm/CodeGen/MachineFunctionPass.h"
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#include "llvm/CodeGen/MachineInstr.h"
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#include "llvm/Support/Mangler.h"
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#include "Support/CommandLine.h"
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#include "Support/Debug.h"
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#include "Support/MathExtras.h"
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#include "Support/Statistic.h"
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#include "Support/StringExtras.h"
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#include <set>
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namespace llvm {
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namespace {
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Statistic<> EmittedInsts("asm-printer", "Number of machine instrs printed");
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struct Printer : public MachineFunctionPass {
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/// Output stream on which we're printing assembly code.
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///
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std::ostream &O;
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/// Target machine description which we query for reg. names, data
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/// layout, etc.
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///
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PPC64TargetMachine &TM;
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/// Name-mangler for global names.
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///
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Mangler *Mang;
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/// Map for labels corresponding to global variables
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///
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std::map<const GlobalVariable*,std::string> GVToLabelMap;
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Printer(std::ostream &o, TargetMachine &tm) : O(o),
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TM(reinterpret_cast<PPC64TargetMachine&>(tm)), LabelNumber(0) {}
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/// Cache of mangled name for current function. This is
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/// recalculated at the beginning of each call to
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/// runOnMachineFunction().
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///
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std::string CurrentFnName;
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/// Unique incrementer for label values for referencing Global values.
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///
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unsigned LabelNumber;
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virtual const char *getPassName() const {
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return "PPC64 Assembly Printer";
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}
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void printMachineInstruction(const MachineInstr *MI);
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void printOp(const MachineOperand &MO, bool elideOffsetKeyword = false);
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void printImmOp(const MachineOperand &MO, unsigned ArgType);
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void printConstantPool(MachineConstantPool *MCP);
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bool runOnMachineFunction(MachineFunction &F);
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bool doInitialization(Module &M);
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bool doFinalization(Module &M);
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void emitGlobalConstant(const Constant* CV);
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void emitConstantValueOnly(const Constant *CV);
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};
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} // end of anonymous namespace
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/// createPPC64AsmPrinterPass - Returns a pass that prints the PPC
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/// assembly code for a MachineFunction to the given output stream,
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/// using the given target machine description. This should work
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/// regardless of whether the function is in SSA form or not.
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///
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FunctionPass *createPPC64AsmPrinter(std::ostream &o,TargetMachine &tm) {
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return new Printer(o, tm);
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}
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/// isStringCompatible - Can we treat the specified array as a string?
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/// Only if it is an array of ubytes or non-negative sbytes.
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///
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static bool isStringCompatible(const ConstantArray *CVA) {
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const Type *ETy = cast<ArrayType>(CVA->getType())->getElementType();
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if (ETy == Type::UByteTy) return true;
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if (ETy != Type::SByteTy) return false;
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for (unsigned i = 0; i < CVA->getNumOperands(); ++i)
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if (cast<ConstantSInt>(CVA->getOperand(i))->getValue() < 0)
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return false;
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return true;
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}
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/// toOctal - Convert the low order bits of X into an octal digit.
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///
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static inline char toOctal(int X) {
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return (X&7)+'0';
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}
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// Possible states while outputting ASCII strings
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namespace {
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enum StringSection {
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None,
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Alpha,
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Numeric
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};
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}
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/// SwitchStringSection - manage the changes required to output bytes as
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/// characters in a string vs. numeric decimal values
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///
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static inline void SwitchStringSection(std::ostream &O, StringSection NewSect,
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StringSection &Current) {
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if (Current == None) {
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if (NewSect == Alpha)
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O << "\t.byte \"";
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else if (NewSect == Numeric)
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O << "\t.byte ";
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} else if (Current == Alpha) {
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if (NewSect == None)
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O << "\"";
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else if (NewSect == Numeric)
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O << "\"\n"
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<< "\t.byte ";
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} else if (Current == Numeric) {
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if (NewSect == Alpha)
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O << '\n'
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<< "\t.byte \"";
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else if (NewSect == Numeric)
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O << ", ";
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}
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Current = NewSect;
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}
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/// getAsCString - Return the specified array as a C compatible
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/// string, only if the predicate isStringCompatible is true.
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///
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static void printAsCString(std::ostream &O, const ConstantArray *CVA) {
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assert(isStringCompatible(CVA) && "Array is not string compatible!");
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if (CVA->getNumOperands() == 0)
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return;
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StringSection Current = None;
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for (unsigned i = 0, e = CVA->getNumOperands(); i != e; ++i) {
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unsigned char C = cast<ConstantInt>(CVA->getOperand(i))->getRawValue();
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if (C == '"') {
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SwitchStringSection(O, Alpha, Current);
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O << "\"\"";
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} else if (isprint(C)) {
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SwitchStringSection(O, Alpha, Current);
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O << C;
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} else {
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SwitchStringSection(O, Numeric, Current);
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O << utostr((unsigned)C);
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}
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}
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SwitchStringSection(O, None, Current);
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O << '\n';
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}
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// Print out the specified constant, without a storage class. Only the
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// constants valid in constant expressions can occur here.
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void Printer::emitConstantValueOnly(const Constant *CV) {
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if (CV->isNullValue())
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O << "0";
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else if (const ConstantBool *CB = dyn_cast<ConstantBool>(CV)) {
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assert(CB == ConstantBool::True);
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O << "1";
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} else if (const ConstantSInt *CI = dyn_cast<ConstantSInt>(CV))
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O << CI->getValue();
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else if (const ConstantUInt *CI = dyn_cast<ConstantUInt>(CV))
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O << CI->getValue();
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else if (const GlobalValue *GV = dyn_cast<GlobalValue>(CV))
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// This is a constant address for a global variable or function. Use the
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// name of the variable or function as the address value.
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O << Mang->getValueName(GV);
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else if (const ConstantExpr *CE = dyn_cast<ConstantExpr>(CV)) {
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const TargetData &TD = TM.getTargetData();
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switch (CE->getOpcode()) {
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case Instruction::GetElementPtr: {
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// generate a symbolic expression for the byte address
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const Constant *ptrVal = CE->getOperand(0);
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std::vector<Value*> idxVec(CE->op_begin()+1, CE->op_end());
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if (unsigned Offset = TD.getIndexedOffset(ptrVal->getType(), idxVec)) {
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O << "(";
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emitConstantValueOnly(ptrVal);
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O << ") + " << Offset;
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} else {
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emitConstantValueOnly(ptrVal);
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}
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break;
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}
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case Instruction::Cast: {
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// Support only non-converting or widening casts for now, that is, ones
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// that do not involve a change in value. This assertion is really gross,
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// and may not even be a complete check.
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Constant *Op = CE->getOperand(0);
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const Type *OpTy = Op->getType(), *Ty = CE->getType();
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// Remember, kids, pointers on x86 can be losslessly converted back and
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// forth into 32-bit or wider integers, regardless of signedness. :-P
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assert(((isa<PointerType>(OpTy)
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&& (Ty == Type::LongTy || Ty == Type::ULongTy
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|| Ty == Type::IntTy || Ty == Type::UIntTy))
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|| (isa<PointerType>(Ty)
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&& (OpTy == Type::LongTy || OpTy == Type::ULongTy
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|| OpTy == Type::IntTy || OpTy == Type::UIntTy))
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|| (((TD.getTypeSize(Ty) >= TD.getTypeSize(OpTy))
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&& OpTy->isLosslesslyConvertibleTo(Ty))))
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&& "FIXME: Don't yet support this kind of constant cast expr");
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O << "(";
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emitConstantValueOnly(Op);
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O << ")";
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break;
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}
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case Instruction::Add:
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O << "(";
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emitConstantValueOnly(CE->getOperand(0));
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O << ") + (";
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emitConstantValueOnly(CE->getOperand(1));
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O << ")";
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break;
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default:
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assert(0 && "Unsupported operator!");
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}
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} else {
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assert(0 && "Unknown constant value!");
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}
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}
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// Print a constant value or values, with the appropriate storage class as a
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// prefix.
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void Printer::emitGlobalConstant(const Constant *CV) {
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const TargetData &TD = TM.getTargetData();
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if (const ConstantArray *CVA = dyn_cast<ConstantArray>(CV)) {
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if (isStringCompatible(CVA)) {
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printAsCString(O, CVA);
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} else { // Not a string. Print the values in successive locations
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for (unsigned i=0, e = CVA->getNumOperands(); i != e; i++)
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emitGlobalConstant(CVA->getOperand(i));
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}
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return;
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} else if (const ConstantStruct *CVS = dyn_cast<ConstantStruct>(CV)) {
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// Print the fields in successive locations. Pad to align if needed!
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const StructLayout *cvsLayout = TD.getStructLayout(CVS->getType());
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unsigned sizeSoFar = 0;
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for (unsigned i = 0, e = CVS->getNumOperands(); i != e; i++) {
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const Constant* field = CVS->getOperand(i);
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// Check if padding is needed and insert one or more 0s.
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unsigned fieldSize = TD.getTypeSize(field->getType());
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unsigned padSize = ((i == e-1? cvsLayout->StructSize
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: cvsLayout->MemberOffsets[i+1])
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- cvsLayout->MemberOffsets[i]) - fieldSize;
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sizeSoFar += fieldSize + padSize;
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// Now print the actual field value
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emitGlobalConstant(field);
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// Insert the field padding unless it's zero bytes...
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if (padSize)
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O << "\t.space\t " << padSize << "\n";
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}
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assert(sizeSoFar == cvsLayout->StructSize &&
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"Layout of constant struct may be incorrect!");
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return;
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} else if (const ConstantFP *CFP = dyn_cast<ConstantFP>(CV)) {
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// FP Constants are printed as integer constants to avoid losing
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// precision...
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double Val = CFP->getValue();
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switch (CFP->getType()->getTypeID()) {
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default: assert(0 && "Unknown floating point type!");
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case Type::FloatTyID: {
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union FU { // Abide by C TBAA rules
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float FVal;
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unsigned UVal;
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} U;
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U.FVal = Val;
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O << "\t.long " << U.UVal << "\t# float " << Val << "\n";
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return;
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}
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case Type::DoubleTyID: {
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union DU { // Abide by C TBAA rules
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double FVal;
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uint64_t UVal;
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struct {
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uint32_t MSWord;
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uint32_t LSWord;
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} T;
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} U;
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U.FVal = Val;
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O << ".long " << U.T.MSWord << "\t# double most significant word "
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<< Val << "\n";
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O << ".long " << U.T.LSWord << "\t# double least significant word "
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<< Val << "\n";
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return;
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}
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}
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} else if (CV->getType() == Type::ULongTy || CV->getType() == Type::LongTy) {
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if (const ConstantInt *CI = dyn_cast<ConstantInt>(CV)) {
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union DU { // Abide by C TBAA rules
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int64_t UVal;
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struct {
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uint32_t MSWord;
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uint32_t LSWord;
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} T;
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} U;
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U.UVal = CI->getRawValue();
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O << ".long " << U.T.MSWord << "\t# Double-word most significant word "
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<< U.UVal << "\n";
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O << ".long " << U.T.LSWord << "\t# Double-word least significant word "
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<< U.UVal << "\n";
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return;
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}
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}
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const Type *type = CV->getType();
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O << "\t";
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switch (type->getTypeID()) {
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case Type::UByteTyID: case Type::SByteTyID:
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O << "\t.byte";
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break;
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case Type::UShortTyID: case Type::ShortTyID:
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O << "\t.short";
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break;
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case Type::BoolTyID:
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case Type::PointerTyID:
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case Type::UIntTyID: case Type::IntTyID:
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O << "\t.long";
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break;
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case Type::ULongTyID: case Type::LongTyID:
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assert (0 && "Should have already output double-word constant.");
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case Type::FloatTyID: case Type::DoubleTyID:
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assert (0 && "Should have already output floating point constant.");
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default:
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if (CV == Constant::getNullValue(type)) { // Zero initializer?
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O << "\t.space " << TD.getTypeSize(type) << "\n";
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return;
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}
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std::cerr << "Can't handle printing: " << *CV;
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abort();
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break;
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}
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O << ' ';
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emitConstantValueOnly(CV);
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O << '\n';
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}
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/// printConstantPool - Print to the current output stream assembly
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/// representations of the constants in the constant pool MCP. This is
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/// used to print out constants which have been "spilled to memory" by
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/// the code generator.
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///
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void Printer::printConstantPool(MachineConstantPool *MCP) {
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const std::vector<Constant*> &CP = MCP->getConstants();
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const TargetData &TD = TM.getTargetData();
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if (CP.empty()) return;
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for (unsigned i = 0, e = CP.size(); i != e; ++i) {
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O << "\t.const\n";
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O << "\t.align " << (unsigned)TD.getTypeAlignment(CP[i]->getType())
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<< "\n";
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O << ".CPI" << CurrentFnName << "_" << i << ":\t\t\t\t\t;"
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<< *CP[i] << "\n";
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emitGlobalConstant(CP[i]);
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}
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}
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/// runOnMachineFunction - This uses the printMachineInstruction()
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/// method to print assembly for each instruction.
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///
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bool Printer::runOnMachineFunction(MachineFunction &MF) {
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CurrentFnName = MF.getFunction()->getName();
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// Print out constants referenced by the function
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printConstantPool(MF.getConstantPool());
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// Print out header for the function.
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O << "\t.csect .text[PR]\n"
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<< "\t.align 2\n"
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<< "\t.globl " << CurrentFnName << '\n'
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<< "\t.globl ." << CurrentFnName << '\n'
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<< "\t.csect " << CurrentFnName << "[DS],3\n"
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<< CurrentFnName << ":\n"
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<< "\t.llong ." << CurrentFnName << ", TOC[tc0], 0\n"
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<< "\t.csect .text[PR]\n"
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<< '.' << CurrentFnName << ":\n";
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// Print out code for the function.
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for (MachineFunction::const_iterator I = MF.begin(), E = MF.end();
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I != E; ++I) {
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// Print a label for the basic block.
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O << "LBB" << CurrentFnName << "_" << I->getNumber() << ":\t# "
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<< I->getBasicBlock()->getName() << "\n";
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for (MachineBasicBlock::const_iterator II = I->begin(), E = I->end();
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II != E; ++II) {
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// Print the assembly for the instruction.
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O << "\t";
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printMachineInstruction(II);
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}
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}
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++LabelNumber;
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O << "LT.." << CurrentFnName << ":\n"
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<< "\t.long 0\n"
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<< "\t.byte 0,0,32,65,128,0,0,0\n"
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<< "\t.long LT.." << CurrentFnName << "-." << CurrentFnName << '\n'
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<< "\t.short 3\n"
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<< "\t.byte \"" << CurrentFnName << "\"\n"
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<< "\t.align 2\n";
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// We didn't modify anything.
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return false;
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}
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void Printer::printOp(const MachineOperand &MO,
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bool elideOffsetKeyword /* = false */) {
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const MRegisterInfo &RI = *TM.getRegisterInfo();
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int new_symbol;
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switch (MO.getType()) {
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case MachineOperand::MO_VirtualRegister:
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if (Value *V = MO.getVRegValueOrNull()) {
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O << "<" << V->getName() << ">";
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return;
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}
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// FALLTHROUGH
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case MachineOperand::MO_MachineRegister:
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case MachineOperand::MO_CCRegister: {
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// On AIX, do not print out the 'R' (GPR) or 'F' (FPR) in reg names
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const char *regName = RI.get(MO.getReg()).Name;
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if (regName[0] == 'R' || regName[0] == 'F')
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O << ®Name[1];
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else
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O << regName;
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return;
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}
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case MachineOperand::MO_SignExtendedImmed:
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case MachineOperand::MO_UnextendedImmed:
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std::cerr << "printOp() does not handle immediate values\n";
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abort();
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return;
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case MachineOperand::MO_PCRelativeDisp:
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std::cerr << "Shouldn't use addPCDisp() when building PPC MachineInstrs";
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abort();
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return;
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case MachineOperand::MO_MachineBasicBlock: {
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MachineBasicBlock *MBBOp = MO.getMachineBasicBlock();
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O << ".LBB" << Mang->getValueName(MBBOp->getParent()->getFunction())
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<< "_" << MBBOp->getNumber() << "\t# "
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<< MBBOp->getBasicBlock()->getName();
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return;
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}
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case MachineOperand::MO_ConstantPoolIndex:
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O << ".CPI" << CurrentFnName << "_" << MO.getConstantPoolIndex();
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return;
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case MachineOperand::MO_ExternalSymbol:
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O << MO.getSymbolName();
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return;
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case MachineOperand::MO_GlobalAddress:
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if (!elideOffsetKeyword) {
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GlobalValue *GV = MO.getGlobal();
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if (Function *F = dyn_cast<Function>(GV)) {
|
|
O << Mang->getValueName(F);
|
|
} else if (GlobalVariable *GVar = dyn_cast<GlobalVariable>(GV)) {
|
|
// output the label name
|
|
O << GVToLabelMap[GVar];
|
|
}
|
|
}
|
|
return;
|
|
|
|
default:
|
|
O << "<unknown operand type: " << MO.getType() << ">";
|
|
return;
|
|
}
|
|
}
|
|
|
|
void Printer::printImmOp(const MachineOperand &MO, unsigned ArgType) {
|
|
int Imm = MO.getImmedValue();
|
|
if (ArgType == PPCII::Simm16 || ArgType == PPCII::Disimm16) {
|
|
O << (short)Imm;
|
|
} else {
|
|
O << Imm;
|
|
}
|
|
}
|
|
|
|
/// printMachineInstruction -- Print out a single PPC LLVM instruction
|
|
/// MI in Darwin syntax to the current output stream.
|
|
///
|
|
void Printer::printMachineInstruction(const MachineInstr *MI) {
|
|
unsigned Opcode = MI->getOpcode();
|
|
const TargetInstrInfo &TII = *TM.getInstrInfo();
|
|
const TargetInstrDescriptor &Desc = TII.get(Opcode);
|
|
unsigned i;
|
|
|
|
unsigned ArgCount = MI->getNumOperands();
|
|
unsigned ArgType[] = {
|
|
(Desc.TSFlags >> PPCII::Arg0TypeShift) & PPCII::ArgTypeMask,
|
|
(Desc.TSFlags >> PPCII::Arg1TypeShift) & PPCII::ArgTypeMask,
|
|
(Desc.TSFlags >> PPCII::Arg2TypeShift) & PPCII::ArgTypeMask,
|
|
(Desc.TSFlags >> PPCII::Arg3TypeShift) & PPCII::ArgTypeMask,
|
|
(Desc.TSFlags >> PPCII::Arg4TypeShift) & PPCII::ArgTypeMask
|
|
};
|
|
assert(((Desc.TSFlags & PPCII::VMX) == 0) &&
|
|
"Instruction requires VMX support");
|
|
++EmittedInsts;
|
|
|
|
// CALLpcrel and CALLindirect are handled specially here to print only the
|
|
// appropriate number of args that the assembler expects. This is because
|
|
// may have many arguments appended to record the uses of registers that are
|
|
// holding arguments to the called function.
|
|
if (Opcode == PPC::COND_BRANCH) {
|
|
std::cerr << "Error: untranslated conditional branch psuedo instruction!\n";
|
|
abort();
|
|
} else if (Opcode == PPC::IMPLICIT_DEF) {
|
|
O << "# IMPLICIT DEF ";
|
|
printOp(MI->getOperand(0));
|
|
O << "\n";
|
|
return;
|
|
} else if (Opcode == PPC::CALLpcrel) {
|
|
O << TII.getName(Opcode) << " ";
|
|
printOp(MI->getOperand(0));
|
|
O << "\n";
|
|
return;
|
|
} else if (Opcode == PPC::CALLindirect) {
|
|
O << TII.getName(Opcode) << " ";
|
|
printImmOp(MI->getOperand(0), ArgType[0]);
|
|
O << ", ";
|
|
printImmOp(MI->getOperand(1), ArgType[0]);
|
|
O << "\n";
|
|
return;
|
|
} else if (Opcode == PPC::MovePCtoLR) {
|
|
// FIXME: should probably be converted to cout.width and cout.fill
|
|
O << "bl \"L0000" << LabelNumber << "$pb\"\n";
|
|
O << "\"L0000" << LabelNumber << "$pb\":\n";
|
|
O << "\tmflr ";
|
|
printOp(MI->getOperand(0));
|
|
O << "\n";
|
|
return;
|
|
}
|
|
|
|
O << LowercaseString(TII.getName(Opcode)) << " ";
|
|
if (Opcode == PPC::BLR || Opcode == PPC::NOP) {
|
|
O << "\n";
|
|
} else if (ArgCount == 3 &&
|
|
(ArgType[1] == PPCII::Disimm16 || ArgType[1] == PPCII::Disimm14)) {
|
|
printOp(MI->getOperand(0));
|
|
O << ", ";
|
|
MachineOperand MO = MI->getOperand(1);
|
|
if (MO.isImmediate())
|
|
printImmOp(MO, ArgType[1]);
|
|
else
|
|
printOp(MO);
|
|
O << "(";
|
|
printOp(MI->getOperand(2));
|
|
O << ")\n";
|
|
} else {
|
|
for (i = 0; i < ArgCount; ++i) {
|
|
// addi and friends
|
|
if (i == 1 && ArgCount == 3 && ArgType[2] == PPCII::Simm16 &&
|
|
MI->getOperand(1).hasAllocatedReg() &&
|
|
MI->getOperand(1).getReg() == PPC::R0) {
|
|
O << "0";
|
|
// for long branch support, bc $+8
|
|
} else if (i == 1 && ArgCount == 2 && MI->getOperand(1).isImmediate() &&
|
|
TII.isBranch(MI->getOpcode())) {
|
|
O << "$+8";
|
|
assert(8 == MI->getOperand(i).getImmedValue()
|
|
&& "branch off PC not to pc+8?");
|
|
//printOp(MI->getOperand(i));
|
|
} else if (MI->getOperand(i).isImmediate()) {
|
|
printImmOp(MI->getOperand(i), ArgType[i]);
|
|
} else {
|
|
printOp(MI->getOperand(i));
|
|
}
|
|
if (ArgCount - 1 == i)
|
|
O << "\n";
|
|
else
|
|
O << ", ";
|
|
}
|
|
}
|
|
}
|
|
|
|
// SwitchSection - Switch to the specified section of the executable if we are
|
|
// not already in it!
|
|
//
|
|
static void SwitchSection(std::ostream &OS, std::string &CurSection,
|
|
const char *NewSection) {
|
|
if (CurSection != NewSection) {
|
|
CurSection = NewSection;
|
|
if (!CurSection.empty())
|
|
OS << "\t" << NewSection << "\n";
|
|
}
|
|
}
|
|
|
|
bool Printer::doInitialization(Module &M) {
|
|
const TargetData &TD = TM.getTargetData();
|
|
std::string CurSection;
|
|
|
|
O << "\t.machine \"ppc64\"\n"
|
|
<< "\t.toc\n"
|
|
<< "\t.csect .text[PR]\n";
|
|
|
|
// Print out module-level global variables
|
|
for (Module::const_giterator I = M.gbegin(), E = M.gend(); I != E; ++I) {
|
|
if (!I->hasInitializer())
|
|
continue;
|
|
|
|
std::string Name = I->getName();
|
|
Constant *C = I->getInitializer();
|
|
// N.B.: We are defaulting to writable strings
|
|
if (I->hasExternalLinkage()) {
|
|
O << "\t.globl " << Name << '\n'
|
|
<< "\t.csect .data[RW],3\n";
|
|
} else {
|
|
O << "\t.csect _global.rw_c[RW],3\n";
|
|
}
|
|
O << Name << ":\n";
|
|
emitGlobalConstant(C);
|
|
}
|
|
|
|
// Output labels for globals
|
|
if (M.gbegin() != M.gend()) O << "\t.toc\n";
|
|
for (Module::const_giterator I = M.gbegin(), E = M.gend(); I != E; ++I) {
|
|
const GlobalVariable *GV = I;
|
|
// Do not output labels for unused variables
|
|
if (GV->isExternal() && GV->use_begin() == GV->use_end())
|
|
continue;
|
|
|
|
std::string Name = GV->getName();
|
|
std::string Label = "LC.." + utostr(LabelNumber++);
|
|
GVToLabelMap[GV] = Label;
|
|
O << Label << ":\n"
|
|
<< "\t.tc " << Name << "[TC]," << Name;
|
|
if (GV->isExternal()) O << "[RW]";
|
|
O << '\n';
|
|
}
|
|
|
|
Mang = new Mangler(M, ".");
|
|
return false; // success
|
|
}
|
|
|
|
bool Printer::doFinalization(Module &M) {
|
|
const TargetData &TD = TM.getTargetData();
|
|
// Print out module-level global variables
|
|
for (Module::const_giterator I = M.gbegin(), E = M.gend(); I != E; ++I) {
|
|
if (I->hasInitializer() || I->hasExternalLinkage())
|
|
continue;
|
|
|
|
std::string Name = I->getName();
|
|
if (I->hasInternalLinkage()) {
|
|
O << "\t.lcomm " << Name << ",16,_global.bss_c";
|
|
} else {
|
|
O << "\t.comm " << Name << "," << TD.getTypeSize(I->getType())
|
|
<< "," << log2((unsigned)TD.getTypeAlignment(I->getType()));
|
|
}
|
|
O << "\t\t# ";
|
|
WriteAsOperand(O, I, true, true, &M);
|
|
O << "\n";
|
|
}
|
|
|
|
O << "_section_.text:\n"
|
|
<< "\t.csect .data[RW],3\n"
|
|
<< "\t.llong _section_.text\n";
|
|
|
|
delete Mang;
|
|
return false; // success
|
|
}
|
|
|
|
} // End llvm namespace
|