#ifndef LLVM_TARGET_TARGETJITINFO_H
#define LLVM_TARGET_TARGETJITINFO_H
-#include <cassert>
#include "llvm/Support/DataTypes.h"
+#include "llvm/Support/ErrorHandling.h"
+#include <cassert>
namespace llvm {
class Function;
class GlobalValue;
- class MachineCodeEmitter;
+ class JITCodeEmitter;
class MachineRelocation;
/// TargetJITInfo - Target specific information required by the Just-In-Time
/// code generator.
class TargetJITInfo {
+ virtual void anchor();
public:
virtual ~TargetJITInfo() {}
///
virtual void replaceMachineCodeForFunction(void *Old, void *New) = 0;
- /// emitGlobalValueIndirectSym - Use the specified MachineCodeEmitter object
+ /// emitGlobalValueIndirectSym - Use the specified JITCodeEmitter object
/// to emit an indirect symbol which contains the address of the specified
/// ptr.
virtual void *emitGlobalValueIndirectSym(const GlobalValue* GV, void *ptr,
- MachineCodeEmitter &MCE) {
- assert(0 && "This target doesn't implement emitGlobalValueIndirectSym!");
- return 0;
+ JITCodeEmitter &JCE) {
+ llvm_unreachable("This target doesn't implement "
+ "emitGlobalValueIndirectSym!");
}
- /// emitFunctionStub - Use the specified MachineCodeEmitter object to emit a
- /// small native function that simply calls the function at the specified
- /// address. Return the address of the resultant function.
- virtual void *emitFunctionStub(const Function* F, void *Fn,
- MachineCodeEmitter &MCE) {
- assert(0 && "This target doesn't implement emitFunctionStub!");
- return 0;
+ /// Records the required size and alignment for a call stub in bytes.
+ struct StubLayout {
+ size_t Size;
+ size_t Alignment;
+ };
+ /// Returns the maximum size and alignment for a call stub on this target.
+ virtual StubLayout getStubLayout() {
+ llvm_unreachable("This target doesn't implement getStubLayout!");
}
-
- /// emitFunctionStubAtAddr - Use the specified MachineCodeEmitter object to
- /// emit a small native function that simply calls Fn. Emit the stub into
- /// the supplied buffer.
- virtual void emitFunctionStubAtAddr(const Function* F, void *Fn,
- void *Buffer, MachineCodeEmitter &MCE) {
- assert(0 && "This target doesn't implement emitFunctionStubAtAddr!");
+
+ /// emitFunctionStub - Use the specified JITCodeEmitter object to emit a
+ /// small native function that simply calls the function at the specified
+ /// address. The JITCodeEmitter must already have storage allocated for the
+ /// stub. Return the address of the resultant function, which may have been
+ /// aligned from the address the JCE was set up to emit at.
+ virtual void *emitFunctionStub(const Function* F, void *Target,
+ JITCodeEmitter &JCE) {
+ llvm_unreachable("This target doesn't implement emitFunctionStub!");
}
/// getPICJumpTableEntry - Returns the value of the jumptable entry for the
/// specific basic block.
virtual uintptr_t getPICJumpTableEntry(uintptr_t BB, uintptr_t JTBase) {
- assert(0 && "This target doesn't implement getPICJumpTableEntry!");
- return 0;
+ llvm_unreachable("This target doesn't implement getPICJumpTableEntry!");
}
/// LazyResolverFn - This typedef is used to represent the function that
/// function, and giving the JIT the target function used to do the lazy
/// resolving.
virtual LazyResolverFn getLazyResolverFunction(JITCompilerFn) {
- assert(0 && "Not implemented for this target!");
- return 0;
+ llvm_unreachable("Not implemented for this target!");
}
/// relocate - Before the JIT can run a block of code that has been emitted,
unsigned NumRelocs, unsigned char* GOTBase) {
assert(NumRelocs == 0 && "This target does not have relocations!");
}
-
/// allocateThreadLocalMemory - Each target has its own way of
/// handling thread local variables. This method returns a value only
/// meaningful to the target.
virtual char* allocateThreadLocalMemory(size_t size) {
- assert(0 && "This target does not implement thread local storage!");
- return 0;
+ llvm_unreachable("This target does not implement thread local storage!");
}
/// needsGOT - Allows a target to specify that it would like the
/// allocateSeparateGVMemory - If true, globals should be placed in
/// separately allocated heap memory rather than in the same
- /// code memory allocated by MachineCodeEmitter.
+ /// code memory allocated by JITCodeEmitter.
virtual bool allocateSeparateGVMemory() const { return false; }
protected:
bool useGOT;