83 lines
3 KiB
C
83 lines
3 KiB
C
/*
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* Copyright (c) 2022
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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/* MP support header */
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#include "MacportsLegacySupport.h"
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/* _tlv_atexit wrap */
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#if __MP_LEGACY_SUPPORT_ATEXIT_WRAP__
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#include <stdlib.h>
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#include <dlfcn.h>
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/* signature from https://opensource.apple.com/source/dyld/dyld-852.2/src/threadLocalVariables.c.auto.html */
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void _tlv_atexit(void (*func)(void*), void* objAddr) {
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void (*real__tlv_atexit)(void (*func)(void*), void* objAddr);
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int (*real___cxa_thread_atexit)(void (*dtor)(void*), void* obj, void* dso_symbol);
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real__tlv_atexit = dlsym(RTLD_NEXT, "_tlv_atexit");
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if (real__tlv_atexit != NULL) {
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/* _tlv_atexit exists in libSystem.B.dylib on 10.7 and later */
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real__tlv_atexit(func, objAddr);
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return;
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}
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real___cxa_thread_atexit = dlsym(RTLD_DEFAULT, "__cxa_thread_atexit");
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if (real___cxa_thread_atexit != NULL) {
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/* __cxa_thread_atexit exists in
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MacPorts provided libc++ on 10.6 and earlier
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libSystem.B.dylib on 10.8 and later
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MacPorts provided libstdc++
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in all cases, third parameter (dso_handle) seems to be ignored
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*/
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real___cxa_thread_atexit(func, objAddr, NULL);
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return;
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}
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exit(EXIT_FAILURE);
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}
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/* signature from https://github.com/llvm-mirror/libcxxabi/blob/master/src/cxa_thread_atexit.cpp */
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int __cxa_thread_atexit(void (*dtor)(void*), void* obj, void* dso_symbol) {
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void (*real__tlv_atexit)(void (*func)(void*), void* objAddr);
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int (*real___cxa_thread_atexit)(void (*dtor)(void*), void* obj, void* dso_symbol);
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real___cxa_thread_atexit = dlsym(RTLD_NEXT, "__cxa_thread_atexit");
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if (real___cxa_thread_atexit != NULL) {
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/* __cxa_thread_atexit exists in
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MacPorts provided libc++ on 10.6 and earlier
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libSystem.B.dylib on 10.8 and later
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MacPorts provided libstdc++
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*/
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return real___cxa_thread_atexit(dtor, obj, dso_symbol);
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}
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real__tlv_atexit = dlsym(RTLD_DEFAULT, "_tlv_atexit");
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if (real__tlv_atexit != NULL) {
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/* _tlv_atexit exists in libSystem.B.dylib on 10.7 and later
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it seems to be common practice to ignore dso_symbol
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*/
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real__tlv_atexit(dtor, obj);
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return 0;
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}
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exit(EXIT_FAILURE);
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}
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#endif /*__MP_LEGACY_SUPPORT_ATEXIT_WRAP__*/
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