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authorDimitry Andric <dim@FreeBSD.org>2019-12-20 19:53:05 +0000
committerDimitry Andric <dim@FreeBSD.org>2019-12-20 19:53:05 +0000
commit0b57cec536236d46e3dba9bd041533462f33dbb7 (patch)
tree56229dbdbbf76d18580f72f789003db17246c8d9 /contrib/llvm/lib/Support/Unix/DynamicLibrary.inc
parent718ef55ec7785aae63f98f8ca05dc07ed399c16d (diff)
Notes
Diffstat (limited to 'contrib/llvm/lib/Support/Unix/DynamicLibrary.inc')
-rw-r--r--contrib/llvm/lib/Support/Unix/DynamicLibrary.inc134
1 files changed, 0 insertions, 134 deletions
diff --git a/contrib/llvm/lib/Support/Unix/DynamicLibrary.inc b/contrib/llvm/lib/Support/Unix/DynamicLibrary.inc
deleted file mode 100644
index a2a379963de0..000000000000
--- a/contrib/llvm/lib/Support/Unix/DynamicLibrary.inc
+++ /dev/null
@@ -1,134 +0,0 @@
-//===- Unix/DynamicLibrary.cpp - Unix DL Implementation ---------*- C++ -*-===//
-//
-// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
-// See https://llvm.org/LICENSE.txt for license information.
-// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-//
-//===----------------------------------------------------------------------===//
-//
-// This file provides the UNIX specific implementation of DynamicLibrary.
-//
-//===----------------------------------------------------------------------===//
-
-#if defined(HAVE_DLFCN_H) && defined(HAVE_DLOPEN)
-#include <dlfcn.h>
-
-DynamicLibrary::HandleSet::~HandleSet() {
- // Close the libraries in reverse order.
- for (void *Handle : llvm::reverse(Handles))
- ::dlclose(Handle);
- if (Process)
- ::dlclose(Process);
-
- // llvm_shutdown called, Return to default
- DynamicLibrary::SearchOrder = DynamicLibrary::SO_Linker;
-}
-
-void *DynamicLibrary::HandleSet::DLOpen(const char *File, std::string *Err) {
- void *Handle = ::dlopen(File, RTLD_LAZY|RTLD_GLOBAL);
- if (!Handle) {
- if (Err) *Err = ::dlerror();
- return &DynamicLibrary::Invalid;
- }
-
-#ifdef __CYGWIN__
- // Cygwin searches symbols only in the main
- // with the handle of dlopen(NULL, RTLD_GLOBAL).
- if (!File)
- Handle = RTLD_DEFAULT;
-#endif
-
- return Handle;
-}
-
-void DynamicLibrary::HandleSet::DLClose(void *Handle) {
- ::dlclose(Handle);
-}
-
-void *DynamicLibrary::HandleSet::DLSym(void *Handle, const char *Symbol) {
- return ::dlsym(Handle, Symbol);
-}
-
-#else // !HAVE_DLOPEN
-
-DynamicLibrary::HandleSet::~HandleSet() {}
-
-void *DynamicLibrary::HandleSet::DLOpen(const char *File, std::string *Err) {
- if (Err) *Err = "dlopen() not supported on this platform";
- return &Invalid;
-}
-
-void DynamicLibrary::HandleSet::DLClose(void *Handle) {
-}
-
-void *DynamicLibrary::HandleSet::DLSym(void *Handle, const char *Symbol) {
- return nullptr;
-}
-
-#endif
-
-// Must declare the symbols in the global namespace.
-static void *DoSearch(const char* SymbolName) {
-#define EXPLICIT_SYMBOL(SYM) \
- extern void *SYM; if (!strcmp(SymbolName, #SYM)) return (void*)&SYM
-
- // If this is darwin, it has some funky issues, try to solve them here. Some
- // important symbols are marked 'private external' which doesn't allow
- // SearchForAddressOfSymbol to find them. As such, we special case them here,
- // there is only a small handful of them.
-
-#ifdef __APPLE__
- {
- // __eprintf is sometimes used for assert() handling on x86.
- //
- // FIXME: Currently disabled when using Clang, as we don't always have our
- // runtime support libraries available.
-#ifndef __clang__
-#ifdef __i386__
- EXPLICIT_SYMBOL(__eprintf);
-#endif
-#endif
- }
-#endif
-
-#ifdef __CYGWIN__
- {
- EXPLICIT_SYMBOL(_alloca);
- EXPLICIT_SYMBOL(__main);
- }
-#endif
-
-#undef EXPLICIT_SYMBOL
-
-// This macro returns the address of a well-known, explicit symbol
-#define EXPLICIT_SYMBOL(SYM) \
- if (!strcmp(SymbolName, #SYM)) return &SYM
-
-// Under glibc we have a weird situation. The stderr/out/in symbols are both
-// macros and global variables because of standards requirements. So, we
-// boldly use the EXPLICIT_SYMBOL macro without checking for a #define first.
-#if defined(__GLIBC__)
- {
- EXPLICIT_SYMBOL(stderr);
- EXPLICIT_SYMBOL(stdout);
- EXPLICIT_SYMBOL(stdin);
- }
-#else
- // For everything else, we want to check to make sure the symbol isn't defined
- // as a macro before using EXPLICIT_SYMBOL.
- {
-#ifndef stdin
- EXPLICIT_SYMBOL(stdin);
-#endif
-#ifndef stdout
- EXPLICIT_SYMBOL(stdout);
-#endif
-#ifndef stderr
- EXPLICIT_SYMBOL(stderr);
-#endif
- }
-#endif
-#undef EXPLICIT_SYMBOL
-
- return nullptr;
-}