mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-15 04:30:12 +00:00
d0fde30ce8
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9903 91177308-0d34-0410-b5e6-96231b3b80d8
114 lines
4.2 KiB
C++
114 lines
4.2 KiB
C++
//===-- llvm/CodeGen/MachineCodeEmitter.h - Code emission -------*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file was developed by the LLVM research group and is distributed under
|
|
// the University of Illinois Open Source License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file defines an abstract interface that is used by the machine code
|
|
// emission framework to output the code. This allows machine code emission to
|
|
// be separated from concerns such as resolution of call targets, and where the
|
|
// machine code will be written (memory or disk, f.e.).
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_CODEGEN_MACHINECODEEMITTER_H
|
|
#define LLVM_CODEGEN_MACHINECODEEMITTER_H
|
|
|
|
#include <string>
|
|
#include "Support/DataTypes.h"
|
|
|
|
namespace llvm {
|
|
|
|
class MachineFunction;
|
|
class MachineBasicBlock;
|
|
class MachineConstantPool;
|
|
class Value;
|
|
class GlobalValue;
|
|
class Function;
|
|
|
|
struct MachineCodeEmitter {
|
|
virtual ~MachineCodeEmitter() {}
|
|
|
|
/// startFunction - This callback is invoked when the specified function is
|
|
/// about to be code generated.
|
|
///
|
|
virtual void startFunction(MachineFunction &F) {}
|
|
|
|
/// finishFunction - This callback is invoked when the specified function has
|
|
/// finished code generation.
|
|
///
|
|
virtual void finishFunction(MachineFunction &F) {}
|
|
|
|
/// emitConstantPool - This callback is invoked to output the constant pool
|
|
/// for the function.
|
|
virtual void emitConstantPool(MachineConstantPool *MCP) {}
|
|
|
|
/// startFunctionStub - This callback is invoked when the JIT needs the
|
|
/// address of a function that has not been code generated yet. The StubSize
|
|
/// specifies the total size required by the stub. Stubs are not allowed to
|
|
/// have constant pools, the can only use the other emit* methods.
|
|
///
|
|
virtual void startFunctionStub(const Function &F, unsigned StubSize) {}
|
|
|
|
/// finishFunctionStub - This callback is invoked to terminate a function
|
|
/// stub.
|
|
///
|
|
virtual void *finishFunctionStub(const Function &F) { return 0; }
|
|
|
|
/// emitByte - This callback is invoked when a byte needs to be written to the
|
|
/// output stream.
|
|
///
|
|
virtual void emitByte(unsigned char B) {}
|
|
|
|
/// emitWord - This callback is invoked when a word needs to be written to the
|
|
/// output stream.
|
|
///
|
|
virtual void emitWord(unsigned W) = 0;
|
|
|
|
/// getGlobalValueAddress - This method is used to get the address of the
|
|
/// specified global value. In some cases, however, the address may not yet
|
|
/// be known at the point that the method is called (for example, getting the
|
|
/// address of a function which has not yet been code generated). If this is
|
|
/// the case, the function returns zero, and the callee has to be able to
|
|
/// handle the situation.
|
|
///
|
|
virtual uint64_t getGlobalValueAddress(GlobalValue *V) = 0;
|
|
virtual uint64_t getGlobalValueAddress(const std::string &Name) = 0;
|
|
|
|
// getConstantPoolEntryAddress - Return the address of the 'Index' entry in
|
|
// the constant pool that was last emitted with the 'emitConstantPool' method.
|
|
//
|
|
virtual uint64_t getConstantPoolEntryAddress(unsigned Index) = 0;
|
|
|
|
// getCurrentPCValue - This returns the address that the next emitted byte
|
|
// will be output to.
|
|
//
|
|
virtual uint64_t getCurrentPCValue() = 0;
|
|
|
|
// forceCompilationOf - Force the compilation of the specified function, and
|
|
// return its address, because we REALLY need the address now.
|
|
//
|
|
// FIXME: This is JIT specific!
|
|
//
|
|
virtual uint64_t forceCompilationOf(Function *F) = 0;
|
|
|
|
/// createDebugEmitter - Return a dynamically allocated machine
|
|
/// code emitter, which just prints the opcodes and fields out the cout. This
|
|
/// can be used for debugging users of the MachineCodeEmitter interface.
|
|
///
|
|
static MachineCodeEmitter *createDebugEmitter();
|
|
|
|
/// createFilePrinterEmitter - Return a dynamically allocated
|
|
/// machine code emitter, which prints binary code to a file. This
|
|
/// can be used for debugging users of the MachineCodeEmitter interface.
|
|
///
|
|
static MachineCodeEmitter *createFilePrinterEmitter(MachineCodeEmitter&);
|
|
};
|
|
|
|
} // End llvm namespace
|
|
|
|
#endif
|