#ifndef LLVM_CODEGEN_MACHINECODEEMITTER_H
#define LLVM_CODEGEN_MACHINECODEEMITTER_H
-#include <string>
#include "llvm/Support/DataTypes.h"
namespace llvm {
-class MachineFunction;
class MachineBasicBlock;
class MachineConstantPool;
+class MachineFunction;
+class MachineRelocation;
class Value;
class GlobalValue;
class Function;
-struct MachineCodeEmitter {
+class MachineCodeEmitter {
+public:
virtual ~MachineCodeEmitter() {}
/// startFunction - This callback is invoked when the specified function is
/// 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) {}
+ virtual void startFunctionStub(unsigned StubSize) {}
/// finishFunctionStub - This callback is invoked to terminate a function
/// stub.
///
- virtual void *finishFunctionStub(const Function &F) { return 0; }
+ 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 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.
+ /// getCurrentPCValue - This returns the address that the next emitted byte
+ /// will be output to.
///
- virtual uint64_t getGlobalValueAddress(GlobalValue *V) = 0;
- virtual uint64_t getGlobalValueAddress(const std::string &Name) = 0;
+ virtual uint64_t getCurrentPCValue() = 0;
+
+ /// getCurrentPCOffset - Return the offset from the start of the emitted
+ /// buffer that we are currently writing to.
+ virtual uint64_t getCurrentPCOffset() = 0;
+
+ /// addRelocation - Whenever a relocatable address is needed, it should be
+ /// noted with this interface.
+ virtual void addRelocation(const MachineRelocation &MR) = 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.