mirror of
https://github.com/c64scene-ar/llvm-6502.git
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22542 91177308-0d34-0410-b5e6-96231b3b80d8
177 lines
4.8 KiB
C++
177 lines
4.8 KiB
C++
//===-- MachineCodeEmitter.cpp - Implement the MachineCodeEmitter itf -----===//
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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 implements the MachineCodeEmitter interface.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/CodeGen/MachineCodeEmitter.h"
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#include "llvm/CodeGen/MachineFunction.h"
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#include "llvm/Function.h"
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#include <fstream>
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#include <iostream>
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using namespace llvm;
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namespace {
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struct DebugMachineCodeEmitter : public MachineCodeEmitter {
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void startFunction(MachineFunction &F) {
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std::cout << "\n**** Writing machine code for function: "
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<< F.getFunction()->getName() << "\n";
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}
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void finishFunction(MachineFunction &F) {
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std::cout << "\n";
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}
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void startFunctionStub(unsigned StubSize) {
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std::cout << "\n--- Function stub:\n";
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}
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void *finishFunctionStub(const Function *F) {
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std::cout << "\n--- End of stub for Function\n";
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return 0;
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}
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void emitByte(unsigned char B) {
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std::cout << "0x" << std::hex << (unsigned int)B << std::dec << " ";
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}
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void emitWord(unsigned W) {
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std::cout << "0x" << std::hex << W << std::dec << " ";
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}
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void emitWordAt(unsigned W, unsigned *Ptr) {
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std::cout << "0x" << std::hex << W << std::dec << " (at "
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<< (void*) Ptr << ") ";
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}
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void addRelocation(const MachineRelocation &MR) {
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std::cout << "<relocation> ";
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}
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virtual unsigned char* allocateGlobal(unsigned size, unsigned alignment)
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{ return 0; }
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uint64_t getConstantPoolEntryAddress(unsigned Num) { return 0; }
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uint64_t getCurrentPCValue() { return 0; }
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uint64_t getCurrentPCOffset() { return 0; }
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};
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class FilePrinterEmitter : public MachineCodeEmitter {
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std::ofstream actual;
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std::ostream &o;
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MachineCodeEmitter &MCE;
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unsigned counter;
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unsigned values[4];
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public:
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FilePrinterEmitter(MachineCodeEmitter &M, std::ostream &os)
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: o(os), MCE(M), counter(0) {
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openActual();
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}
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~FilePrinterEmitter() {
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o << "\n";
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actual.close();
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}
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void openActual() {
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actual.open("lli.actual.obj");
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if (!actual.good()) {
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std::cerr << "Cannot open 'lli.actual.obj' for writing\n";
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abort();
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}
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}
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void startFunction(MachineFunction &F) {
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// resolve any outstanding calls
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MCE.startFunction(F);
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}
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void finishFunction(MachineFunction &F) {
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MCE.finishFunction(F);
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}
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void emitConstantPool(MachineConstantPool *MCP) {
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MCE.emitConstantPool(MCP);
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}
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void startFunctionStub(unsigned StubSize) {
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MCE.startFunctionStub(StubSize);
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}
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void *finishFunctionStub(const Function *F) {
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return MCE.finishFunctionStub(F);
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}
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void emitByte(unsigned char B) {
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MCE.emitByte(B);
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actual << B; actual.flush();
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values[counter] = (unsigned int) B;
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if (++counter % 4 == 0 && counter != 0) {
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o << std::hex;
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for (unsigned i=0; i<4; ++i) {
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if (values[i] < 16) o << "0";
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o << values[i] << " ";
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}
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o << std::dec << "\t";
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for (unsigned i=0; i<4; ++i) {
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for (int j=7; j>=0; --j) {
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o << ((values[i] >> j) & 1);
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}
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o << " ";
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}
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o << "\n";
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unsigned instr = 0;
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for (unsigned i=0; i<4; ++i)
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instr |= values[i] << (i*8);
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o << "--- * --- * --- * --- * ---\n";
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counter %= 4;
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}
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}
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void emitWord(unsigned W) {
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MCE.emitWord(W);
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}
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void emitWordAt(unsigned W, unsigned *Ptr) {
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MCE.emitWordAt(W, Ptr);
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}
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uint64_t getConstantPoolEntryAddress(unsigned Num) {
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return MCE.getConstantPoolEntryAddress(Num);
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}
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virtual unsigned char* allocateGlobal(unsigned size, unsigned alignment)
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{ return MCE.allocateGlobal(size, alignment); }
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uint64_t getCurrentPCValue() {
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return MCE.getCurrentPCValue();
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}
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uint64_t getCurrentPCOffset() {
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return MCE.getCurrentPCOffset();
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}
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void addRelocation(const MachineRelocation &MR) {
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return MCE.addRelocation(MR);
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}
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};
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}
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/// createDebugMachineCodeEmitter - Return a dynamically allocated machine
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/// code emitter, which just prints the opcodes and fields out the cout. This
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/// can be used for debugging users of the MachineCodeEmitter interface.
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///
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MachineCodeEmitter *
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MachineCodeEmitter::createDebugEmitter() {
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return new DebugMachineCodeEmitter();
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}
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MachineCodeEmitter *
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MachineCodeEmitter::createFilePrinterEmitter(MachineCodeEmitter &MCE) {
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return new FilePrinterEmitter(MCE, std::cerr);
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}
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