Import LLVM, at r72732.

1 files changed, 84 insertions, 0 deletions

diff --git a/lib/Target/X86/X86JITInfo.h b/lib/Target/X86/X86JITInfo.h
new file mode 100644
index 0000000..6a4e214
--- /dev/null
+++ b/lib/Target/X86/X86JITInfo.h
@@ -0,0 +1,84 @@
+//===- X86JITInfo.h - X86 implementation of the JIT interface  --*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file contains the X86 implementation of the TargetJITInfo class.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef X86JITINFO_H
+#define X86JITINFO_H
+
+#include "llvm/Function.h"
+#include "llvm/CodeGen/JITCodeEmitter.h"
+#include "llvm/Target/TargetJITInfo.h"
+
+namespace llvm {
+  class X86TargetMachine;
+
+  class X86JITInfo : public TargetJITInfo {
+    X86TargetMachine &TM;
+    uintptr_t PICBase;
+    char* TLSOffset;
+  public:
+    explicit X86JITInfo(X86TargetMachine &tm) : TM(tm) {
+      useGOT = 0;
+      TLSOffset = 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
+    /// code.
+    ///
+    virtual void replaceMachineCodeForFunction(void *Old, void *New);
+
+    /// 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);
+
+    /// emitFunctionStub - Use the specified JITCodeEmitter object to emit a
+    /// small native function that simply calls the function at the specified
+    /// address.
+    virtual void *emitFunctionStub(const Function* F, void *Fn,
+                                   JITCodeEmitter &JCE);
+
+    /// 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);
+
+    /// getPICJumpTableEntry - Returns the value of the jumptable entry for the
+    /// specific basic block.
+    virtual uintptr_t getPICJumpTableEntry(uintptr_t BB, uintptr_t JTBase);
+
+    /// getLazyResolverFunction - Expose the lazy resolver to the JIT.
+    virtual LazyResolverFn getLazyResolverFunction(JITCompilerFn);
+
+    /// relocate - Before the JIT can run a block of code that has been emitted,
+    /// it must rewrite the code to contain the actual addresses of any
+    /// referenced global symbols.
+    virtual void relocate(void *Function, MachineRelocation *MR,
+                          unsigned NumRelocs, unsigned char* GOTBase);
+    
+    /// 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);
+
+    /// setPICBase / getPICBase - Getter / setter of PICBase, used to compute
+    /// PIC jumptable entry.
+    void setPICBase(uintptr_t Base) { PICBase = Base; }
+    uintptr_t getPICBase() const { return PICBase; }
+  };
+}
+
+#endif