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

libExecutionEngine. Move method implementations that aren't specific to 
allocation out of SectionMemoryManager and into RTDyldMemoryManager.

This is in preparation for exposing RTDyldMemoryManager through the C 
API.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@182407 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 0 insertions, 84 deletions

diff --git a/lib/ExecutionEngine/MCJIT/SectionMemoryManager.cpp b/lib/ExecutionEngine/MCJIT/SectionMemoryManager.cpp
index 1bb0103f08..397426afd4 100644
--- a/lib/ExecutionEngine/MCJIT/SectionMemoryManager.cpp
+++ b/lib/ExecutionEngine/MCJIT/SectionMemoryManager.cpp
@@ -14,7 +14,6 @@
 
 #include "llvm/Config/config.h"
 #include "llvm/ExecutionEngine/SectionMemoryManager.h"
-#include "llvm/Support/DynamicLibrary.h"
 #include "llvm/Support/MathExtras.h"
 
 #ifdef __linux__
@@ -146,38 +145,6 @@ 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 +166,6 @@ 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]);