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authorFilip Pizlo <fpizlo@apple.com>2013-05-21 20:03:01 +0000
committerFilip Pizlo <fpizlo@apple.com>2013-05-21 20:03:01 +0000
commit1441bf7a41b50075cf761cbc794ce3fd0b5762fc (patch)
tree7fab8692dbd8b536525b99af03b9653a328e0b3a /lib/ExecutionEngine/RTDyldMemoryManager.cpp
parent52755c472a738e48a9687240368e4c1f78c45711 (diff)
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Roll out r182407 and r182408 because they broke builds.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@182409 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/ExecutionEngine/RTDyldMemoryManager.cpp')
-rw-r--r--lib/ExecutionEngine/RTDyldMemoryManager.cpp105
1 files changed, 0 insertions, 105 deletions
diff --git a/lib/ExecutionEngine/RTDyldMemoryManager.cpp b/lib/ExecutionEngine/RTDyldMemoryManager.cpp
deleted file mode 100644
index 9d80281ccb..0000000000
--- a/lib/ExecutionEngine/RTDyldMemoryManager.cpp
+++ /dev/null
@@ -1,105 +0,0 @@
-//===-- RTDyldMemoryManager.cpp - Memory manager for MC-JIT -----*- C++ -*-===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// Implementation of the runtime dynamic memory manager base class.
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/ExecutionEngine/RTDyldMemoryManager.h"
-#include "llvm/Support/DynamicLibrary.h"
-#include "llvm/Support/ErrorHandling.h"
-
-namespace llvm {
-
-RTDyldMemoryManager::~RTDyldMemoryManager() {}
-
-// 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 RTDyldMemoryManager::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
-}
-
-static int jit_noop() {
- return 0;
-}
-
-void *RTDyldMemoryManager::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;
-}
-
-} // namespace llvm