Support for allocation of TLS variables in the JIT. Allocation of a global

[oota-llvm.git] / lib / Target / X86 / X86JITInfo.h

diff --git a/lib/Target/X86/X86JITInfo.h b/lib/Target/X86/X86JITInfo.h
index a4c731a3ded9f93a00de0523901b229222808cc9..6b8d197846b2e81a48eb6a2a94f492d22f27b4bd 100644 (file)
--- a/lib/Target/X86/X86JITInfo.h
+++ b/lib/Target/X86/X86JITInfo.h
@@ -2,8 +2,8 @@
 //
 //                     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.
 //
 //===----------------------------------------------------------------------===//
 //
@@ -14,6 +14,7 @@
 #ifndef X86JITINFO_H
 #define X86JITINFO_H
 
+#include "llvm/Function.h"
 #include "llvm/Target/TargetJITInfo.h"
 
 namespace llvm {
@@ -21,8 +22,13 @@ namespace llvm {
 
   class X86JITInfo : public TargetJITInfo {
     X86TargetMachine &TM;
+    intptr_t PICBase;
+    char* TLSOffset;
   public:
-    X86JITInfo(X86TargetMachine &tm) : TM(tm) {useGOT = 0;}
+    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
@@ -31,10 +37,20 @@ namespace llvm {
     ///
     virtual void replaceMachineCodeForFunction(void *Old, void *New);
 
+    /// emitGlobalValueLazyPtr - Use the specified MachineCodeEmitter object to
+    /// emit a lazy pointer which contains the address of the specified ptr.
+    virtual void *emitGlobalValueLazyPtr(const GlobalValue* GV, void *ptr,
+                                         MachineCodeEmitter &MCE);
+
     /// emitFunctionStub - Use the specified MachineCodeEmitter object to emit a
     /// small native function that simply calls the function at the specified
     /// address.
-    virtual void *emitFunctionStub(void *Fn, MachineCodeEmitter &MCE);
+    virtual void *emitFunctionStub(const Function* F, void *Fn,
+                                   MachineCodeEmitter &MCE);
+
+    /// getPICJumpTableEntry - Returns the value of the jumptable entry for the
+    /// specific basic block.
+    virtual intptr_t getPICJumpTableEntry(intptr_t BB, intptr_t JTBase);
 
     /// getLazyResolverFunction - Expose the lazy resolver to the JIT.
     virtual LazyResolverFn getLazyResolverFunction(JITCompilerFn);
@@ -44,6 +60,16 @@ namespace llvm {
     /// 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(intptr_t Base) { PICBase = Base; }
+    intptr_t getPICBase() const { return PICBase; }
   };
 }