mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-11-02 22:04:55 +00:00
a029a27fae
relocation sections. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73038 91177308-0d34-0410-b5e6-96231b3b80d8
112 lines
3.4 KiB
C++
112 lines
3.4 KiB
C++
//===-- lib/CodeGen/ELFCodeEmitter.h ----------------------------*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef ELFCODEEMITTER_H
|
|
#define ELFCODEEMITTER_H
|
|
|
|
#include "ELFWriter.h"
|
|
#include "llvm/CodeGen/MachineCodeEmitter.h"
|
|
#include <vector>
|
|
|
|
namespace llvm {
|
|
|
|
/// ELFCodeEmitter - This class is used by the ELFWriter to
|
|
/// emit the code for functions to the ELF file.
|
|
class ELFCodeEmitter : public MachineCodeEmitter {
|
|
ELFWriter &EW;
|
|
|
|
/// Target machine description
|
|
TargetMachine &TM;
|
|
|
|
/// Section containing code for functions
|
|
ELFSection *ES;
|
|
|
|
/// Relocations - These are the relocations that the function needs, as
|
|
/// emitted.
|
|
std::vector<MachineRelocation> Relocations;
|
|
|
|
/// MBBLocations - This vector is a mapping from MBB ID's to their address.
|
|
/// It is filled in by the StartMachineBasicBlock callback and queried by
|
|
/// the getMachineBasicBlockAddress callback.
|
|
std::vector<uintptr_t> MBBLocations;
|
|
|
|
/// FnStartPtr - Pointer to the start location of the current function
|
|
/// in the buffer
|
|
uint8_t *FnStartPtr;
|
|
public:
|
|
explicit ELFCodeEmitter(ELFWriter &ew) : EW(ew), TM(EW.TM) {}
|
|
|
|
void startFunction(MachineFunction &F);
|
|
bool finishFunction(MachineFunction &F);
|
|
|
|
void addRelocation(const MachineRelocation &MR) {
|
|
Relocations.push_back(MR);
|
|
}
|
|
|
|
virtual void StartMachineBasicBlock(MachineBasicBlock *MBB) {
|
|
if (MBBLocations.size() <= (unsigned)MBB->getNumber())
|
|
MBBLocations.resize((MBB->getNumber()+1)*2);
|
|
MBBLocations[MBB->getNumber()] = getCurrentPCOffset();
|
|
}
|
|
|
|
virtual uintptr_t getMachineBasicBlockAddress(MachineBasicBlock *MBB) {
|
|
assert(MBBLocations.size() > (unsigned)MBB->getNumber() &&
|
|
MBBLocations[MBB->getNumber()] && "MBB not emitted!");
|
|
return MBBLocations[MBB->getNumber()];
|
|
}
|
|
|
|
virtual uintptr_t getConstantPoolEntryAddress(unsigned Index) const {
|
|
assert(0 && "CP not implementated yet!");
|
|
return 0;
|
|
}
|
|
virtual uintptr_t getJumpTableEntryAddress(unsigned Index) const {
|
|
assert(0 && "JT not implementated yet!");
|
|
return 0;
|
|
}
|
|
|
|
virtual uintptr_t getMachineBasicBlockAddress(MachineBasicBlock *MBB) const {
|
|
assert(0 && "JT not implementated yet!");
|
|
return 0;
|
|
}
|
|
|
|
virtual uintptr_t getLabelAddress(uint64_t Label) const {
|
|
assert(0 && "Label address not implementated yet!");
|
|
abort();
|
|
return 0;
|
|
}
|
|
|
|
virtual void emitLabel(uint64_t LabelID) {
|
|
assert(0 && "emit Label not implementated yet!");
|
|
abort();
|
|
}
|
|
|
|
virtual void setModuleInfo(llvm::MachineModuleInfo* MMI) { }
|
|
|
|
/// JIT SPECIFIC FUNCTIONS - DO NOT IMPLEMENT THESE HERE!
|
|
void startGVStub(const GlobalValue* F, unsigned StubSize,
|
|
unsigned Alignment = 1) {
|
|
assert(0 && "JIT specific function called!");
|
|
abort();
|
|
}
|
|
void startGVStub(const GlobalValue* F, void *Buffer, unsigned StubSize) {
|
|
assert(0 && "JIT specific function called!");
|
|
abort();
|
|
}
|
|
void *finishGVStub(const GlobalValue *F) {
|
|
assert(0 && "JIT specific function called!");
|
|
abort();
|
|
return 0;
|
|
}
|
|
}; // end class ELFCodeEmitter
|
|
|
|
} // end namespace llvm
|
|
|
|
#endif
|
|
|