Put RTDyldMemoryManager into its own file, and make it linked into

[oota-llvm.git] / lib / ExecutionEngine / MCJIT / SectionMemoryManager.cpp

diff --git a/lib/ExecutionEngine/MCJIT/SectionMemoryManager.cpp b/lib/ExecutionEngine/MCJIT/SectionMemoryManager.cpp
index 1bb0103f08e1884a1a7106235be290fc6bf59d73..650832e1292daa872620813282c42a049081650f 100644 (file)
--- a/lib/ExecutionEngine/MCJIT/SectionMemoryManager.cpp
+++ b/lib/ExecutionEngine/MCJIT/SectionMemoryManager.cpp
@@ -14,19 +14,8 @@
 
 #include "llvm/Config/config.h"
 #include "llvm/ExecutionEngine/SectionMemoryManager.h"
-#include "llvm/Support/DynamicLibrary.h"
 #include "llvm/Support/MathExtras.h"
 
-#ifdef __linux__
-  // These includes used by SectionMemoryManager::getPointerToNamedFunction()
-  // for Glibc trickery. See comments in this function for more information.
-  #ifdef HAVE_SYS_STAT_H
-    #include <sys/stat.h>
-  #endif
-  #include <fcntl.h>
-  #include <unistd.h>
-#endif
-
 namespace llvm {
 
 uint8_t *SectionMemoryManager::allocateDataSection(uintptr_t Size,
@@ -146,38 +135,6 @@ bool SectionMemoryManager::finalizeMemory(std::string *ErrMsg)
   return false;
 }
 
-// Determine whether we can register EH tables.
-#if (defined(__GNUC__) && !defined(__ARM_EABI__) && \
-     !defined(__USING_SJLJ_EXCEPTIONS__))
-#define HAVE_EHTABLE_SUPPORT 1
-#else
-#define HAVE_EHTABLE_SUPPORT 0
-#endif
-
-#if HAVE_EHTABLE_SUPPORT
-extern "C" void __register_frame(void*);
-
-static const char *processFDE(const char *Entry) {
-  const char *P = Entry;
-  uint32_t Length = *((uint32_t*)P);
-  P += 4;
-  uint32_t Offset = *((uint32_t*)P);
-  if (Offset != 0)
-    __register_frame((void*)Entry);
-  return P + Length;
-}
-#endif
-
-void SectionMemoryManager::registerEHFrames(StringRef SectionData) {
-#if HAVE_EHTABLE_SUPPORT
-  const char *P = SectionData.data();
-  const char *End = SectionData.data() + SectionData.size();
-  do  {
-    P = processFDE(P);
-  } while(P != End);
-#endif
-}
-
 error_code SectionMemoryManager::applyMemoryGroupPermissions(MemoryGroup &MemGroup,
                                                              unsigned Permissions) {
 
@@ -199,57 +156,6 @@ void SectionMemoryManager::invalidateInstructionCache() {
                                             CodeMem.AllocatedMem[i].size());
 }
 
-static int jit_noop() {
-  return 0;
-}
-
-void *SectionMemoryManager::getPointerToNamedFunction(const std::string &Name,
-                                                       bool AbortOnFailure) {
-#if defined(__linux__)
-  //===--------------------------------------------------------------------===//
-  // Function stubs that are invoked instead of certain library calls
-  //
-  // Force the following functions to be linked in to anything that uses the
-  // JIT. This is a hack designed to work around the all-too-clever Glibc
-  // strategy of making these functions work differently when inlined vs. when
-  // not inlined, and hiding their real definitions in a separate archive file
-  // that the dynamic linker can't see. For more info, search for
-  // 'libc_nonshared.a' on Google, or read http://llvm.org/PR274.
-  if (Name == "stat") return (void*)(intptr_t)&stat;
-  if (Name == "fstat") return (void*)(intptr_t)&fstat;
-  if (Name == "lstat") return (void*)(intptr_t)&lstat;
-  if (Name == "stat64") return (void*)(intptr_t)&stat64;
-  if (Name == "fstat64") return (void*)(intptr_t)&fstat64;
-  if (Name == "lstat64") return (void*)(intptr_t)&lstat64;
-  if (Name == "atexit") return (void*)(intptr_t)&atexit;
-  if (Name == "mknod") return (void*)(intptr_t)&mknod;
-#endif // __linux__
-
-  // We should not invoke parent's ctors/dtors from generated main()!
-  // On Mingw and Cygwin, the symbol __main is resolved to
-  // callee's(eg. tools/lli) one, to invoke wrong duplicated ctors
-  // (and register wrong callee's dtors with atexit(3)).
-  // We expect ExecutionEngine::runStaticConstructorsDestructors()
-  // is called before ExecutionEngine::runFunctionAsMain() is called.
-  if (Name == "__main") return (void*)(intptr_t)&jit_noop;
-
-  const char *NameStr = Name.c_str();
-  void *Ptr = sys::DynamicLibrary::SearchForAddressOfSymbol(NameStr);
-  if (Ptr) return Ptr;
-
-  // If it wasn't found and if it starts with an underscore ('_') character,
-  // try again without the underscore.
-  if (NameStr[0] == '_') {
-    Ptr = sys::DynamicLibrary::SearchForAddressOfSymbol(NameStr+1);
-    if (Ptr) return Ptr;
-  }
-
-  if (AbortOnFailure)
-    report_fatal_error("Program used external function '" + Name +
-                      "' which could not be resolved!");
-  return 0;
-}
-
 SectionMemoryManager::~SectionMemoryManager() {
   for (unsigned i = 0, e = CodeMem.AllocatedMem.size(); i != e; ++i)
     sys::Memory::releaseMappedMemory(CodeMem.AllocatedMem[i]);