From: Brendan Shanks bshanks@codeweavers.com
84760a8fb2cf9ed577c63957c5bdfc621d748a7f started using the documented Mach API method. --- dlls/ntdll/unix/signal_x86_64.c | 38 --------------------------------- 1 file changed, 38 deletions(-)
diff --git a/dlls/ntdll/unix/signal_x86_64.c b/dlls/ntdll/unix/signal_x86_64.c index 26b540bd629..8bddc073f74 100644 --- a/dlls/ntdll/unix/signal_x86_64.c +++ b/dlls/ntdll/unix/signal_x86_64.c @@ -2440,50 +2440,12 @@ static void *mac_thread_gsbase(void) { struct thread_identifier_info tiinfo; unsigned int info_count = THREAD_IDENTIFIER_INFO_COUNT; - static int gsbase_offset = -1;
mach_port_t self = mach_thread_self(); kern_return_t kr = thread_info(self, THREAD_IDENTIFIER_INFO, (thread_info_t) &tiinfo, &info_count); mach_port_deallocate(mach_task_self(), self);
if (kr == KERN_SUCCESS) return (void*)tiinfo.thread_handle; - - if (gsbase_offset < 0) - { - /* Search for the array of TLS slots within the pthread data structure. - That's what the macOS pthread implementation uses for gsbase. */ - const void* const sentinel1 = (const void*)0x2bffb6b4f11228ae; - const void* const sentinel2 = (const void*)0x0845a7ff6ab76707; - int rc; - pthread_key_t key; - const void** p = (const void**)pthread_self(); - int i; - - gsbase_offset = 0; - if ((rc = pthread_key_create(&key, NULL))) return NULL; - - pthread_setspecific(key, sentinel1); - - for (i = key + 1; i < 2000; i++) /* arbitrary limit */ - { - if (p[i] == sentinel1) - { - pthread_setspecific(key, sentinel2); - - if (p[i] == sentinel2) - { - gsbase_offset = (i - key) * sizeof(*p); - break; - } - - pthread_setspecific(key, sentinel1); - } - } - - pthread_key_delete(key); - } - - if (gsbase_offset) return (char*)pthread_self() + gsbase_offset; return NULL; } #endif