RuntimeDyld should use the memory manager API.

Start teaching the runtime Dyld interface to use the memory manager API
for allocating space. Rather than mapping directly into the MachO object,
we extract the payload for each object and copy it into a dedicated buffer
allocated via the memory manager. For now, just do Segment64, so this works
on x86_64, but not yet on ARM.

llvm-svn: 128973

1 files changed, 5 insertions, 9 deletions

diff --git a/llvm/lib/ExecutionEngine/MCJIT/MCJITMemoryManager.h b/llvm/lib/ExecutionEngine/MCJIT/MCJITMemoryManager.h
index b5251650169..0108ecca84f 100644
--- a/llvm/lib/ExecutionEngine/MCJIT/MCJITMemoryManager.h
+++ b/llvm/lib/ExecutionEngine/MCJIT/MCJITMemoryManager.h
@@ -31,23 +31,19 @@ public:
   // Allocate ActualSize bytes, or more, for the named function. Return
   // a pointer to the allocated memory and update Size to reflect how much
   // memory was acutally allocated.
-  uint64_t startFunctionBody(const char *Name, uintptr_t &Size) {
+  uint8_t *startFunctionBody(const char *Name, uintptr_t &Size) {
     Function *F = M->getFunction(Name);
     assert(F && "No matching function in JIT IR Module!");
-    return (uint64_t)JMM->startFunctionBody(F, Size);
+    return JMM->startFunctionBody(F, Size);
   }
 
   // Mark the end of the function, including how much of the allocated
   // memory was actually used.
-  void endFunctionBody(const char *Name, uint64_t FunctionStart,
-                       uint64_t FunctionEnd) {
+  void endFunctionBody(const char *Name, uint8_t *FunctionStart,
+                       uint8_t *FunctionEnd) {
     Function *F = M->getFunction(Name);
     assert(F && "No matching function in JIT IR Module!");
-    // The JITMemoryManager interface makes the unfortunate assumption that
-    // the address space/sizes we're compiling on are the same as what we're
-    // compiling for, so it uses pointer types for its addresses. Explicit
-    // casts between them to deal with that.
-    JMM->endFunctionBody(F, (uint8_t*)FunctionStart, (uint8_t*)FunctionEnd);
+    JMM->endFunctionBody(F, FunctionStart, FunctionEnd);
   }
 
 };