#ifndef LLVM_TARGET_TARGETJITINFO_H
#define LLVM_TARGET_TARGETJITINFO_H
-#include <vector>
#include <cassert>
-#include "llvm/Support/DataTypes.h"
+#include "llvm/Support/ErrorHandling.h"
+#include "llvm/System/DataTypes.h"
namespace llvm {
class Function;
- class FunctionPassManager;
- class MachineBasicBlock;
- class MachineCodeEmitter;
+ class GlobalValue;
+ class JITCodeEmitter;
class MachineRelocation;
/// TargetJITInfo - Target specific information required by the Just-In-Time
///
virtual void replaceMachineCodeForFunction(void *Old, void *New) = 0;
- /// emitGlobalValueLazyPtr - Use the specified MachineCodeEmitter object to
- /// emit a lazy pointer which contains the address of the specified GV.
- virtual void *emitGlobalValueLazyPtr(void *GV, MachineCodeEmitter &MCE) {
- assert(0 && "This target doesn't implement emitGlobalValueLazyPtr!");
+ /// 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,
+ JITCodeEmitter &JCE) {
+ assert(0 && "This target doesn't implement emitGlobalValueIndirectSym!");
return 0;
}
- /// emitFunctionStub - Use the specified MachineCodeEmitter object to emit a
+ /// 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!");
+ StubLayout Result = {0, 0};
+ return Result;
+ }
+
+ /// emitFunctionStub - Use the specified JITCodeEmitter 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(void *Fn, MachineCodeEmitter &MCE) {
+ /// 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) {
assert(0 && "This target doesn't implement emitFunctionStub!");
return 0;
}
/// getPICJumpTableEntry - Returns the value of the jumptable entry for the
/// specific basic block.
- virtual intptr_t getPICJumpTableEntry(intptr_t BB, intptr_t JTBase) {
+ virtual uintptr_t getPICJumpTableEntry(uintptr_t BB, uintptr_t JTBase) {
assert(0 && "This target doesn't implement getPICJumpTableEntry!");
return 0;
}
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;
+ }
/// needsGOT - Allows a target to specify that it would like the
- // JIT to manage a GOT for it.
+ /// JIT to manage a GOT for it.
bool needsGOT() const { return useGOT; }
+ /// hasCustomConstantPool - Allows a target to specify that constant
+ /// pool address resolution is handled by the target.
+ virtual bool hasCustomConstantPool() const { return false; }
+
+ /// hasCustomJumpTables - Allows a target to specify that jumptables
+ /// are emitted by the target.
+ virtual bool hasCustomJumpTables() const { return false; }
+
+ /// allocateSeparateGVMemory - If true, globals should be placed in
+ /// separately allocated heap memory rather than in the same
+ /// code memory allocated by JITCodeEmitter.
+ virtual bool allocateSeparateGVMemory() const { return false; }
protected:
bool useGOT;
};