//
// 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 is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
#define LLVM_TARGET_TARGETJITINFO_H
#include <cassert>
-#include <vector>
+#include "llvm/Support/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
public:
virtual ~TargetJITInfo() {}
- /// addPassesToJITCompile - Add passes to the specified pass manager to
- /// implement a fast code generator for this target.
- ///
- virtual void addPassesToJITCompile(FunctionPassManager &PM) = 0;
-
/// replaceMachineCodeForFunction - Make it so that calling the function
/// whose machine code is at OLD turns into a call to NEW, perhaps by
/// overwriting OLD with a branch to NEW. This is used for self-modifying
///
virtual void replaceMachineCodeForFunction(void *Old, void *New) = 0;
- /// emitFunctionStub - Use the specified MachineCodeEmitter object to emit a
+ /// 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 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) {
+ virtual void *emitFunctionStub(const Function* F, void *Fn,
+ JITCodeEmitter &JCE) {
assert(0 && "This target doesn't implement emitFunctionStub!");
return 0;
}
+
+ /// emitFunctionStubAtAddr - Use the specified JITCodeEmitter 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, JITCodeEmitter &JCE) {
+ assert(0 && "This target doesn't implement emitFunctionStubAtAddr!");
+ }
+
+ /// 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;
+ }
/// LazyResolverFn - This typedef is used to represent the function that
/// unresolved call points should invoke. This is a target specific
unsigned NumRelocs, unsigned char* GOTBase) {
assert(NumRelocs == 0 && "This target does not have relocations!");
}
+
- /// resolveBBRefs - Resolve branches to BasicBlocks for the JIT emitted
- /// function.
- virtual void resolveBBRefs(MachineCodeEmitter &MCE) {}
-
- /// addBBRef - Add a BasicBlock reference to be resolved after the function
- /// is emitted.
- void addBBRef(MachineBasicBlock *BB, intptr_t PC) {
- BBRefs.push_back(std::make_pair(BB, PC));
+ /// 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;
-
- // Tracks which instruction references which BasicBlock
- std::vector<std::pair<MachineBasicBlock*, intptr_t> > BBRefs;
-
};
} // End llvm namespace