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author | Stephen Hines <srhines@google.com> | 2013-06-12 13:32:42 -0700 |
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committer | Stephen Hines <srhines@google.com> | 2013-06-12 13:32:42 -0700 |
commit | 1878f9a7874b1ff569d745c0269f49d3daf7203d (patch) | |
tree | 19a8dbaaedf6a056c617e87596b32d3f452af137 /lib/ExecutionEngine/MCJIT/SectionMemoryManager.cpp | |
parent | 7a57f27b857ec4b243d83d392a399f02fc196c0a (diff) | |
parent | 100fbdd06be7590b23c4707a98cd605bdb519498 (diff) | |
download | external_llvm-1878f9a7874b1ff569d745c0269f49d3daf7203d.tar.gz external_llvm-1878f9a7874b1ff569d745c0269f49d3daf7203d.tar.bz2 external_llvm-1878f9a7874b1ff569d745c0269f49d3daf7203d.zip |
Merge commit '100fbdd06be7590b23c4707a98cd605bdb519498' into merge_20130612
Diffstat (limited to 'lib/ExecutionEngine/MCJIT/SectionMemoryManager.cpp')
-rw-r--r-- | lib/ExecutionEngine/MCJIT/SectionMemoryManager.cpp | 64 |
1 files changed, 1 insertions, 63 deletions
diff --git a/lib/ExecutionEngine/MCJIT/SectionMemoryManager.cpp b/lib/ExecutionEngine/MCJIT/SectionMemoryManager.cpp index da931247b6..650832e129 100644 --- 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, @@ -111,7 +100,7 @@ uint8_t *SectionMemoryManager::allocateSection(MemoryGroup &MemGroup, return (uint8_t*)Addr; } -bool SectionMemoryManager::applyPermissions(std::string *ErrMsg) +bool SectionMemoryManager::finalizeMemory(std::string *ErrMsg) { // FIXME: Should in-progress permissions be reverted if an error occurs? error_code ec; @@ -167,57 +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]); |