63 	struct atexit *p = __atexit;  in __cxa_atexit()  local
68 	if (pgsize < (int)sizeof(*p))  in __cxa_atexit()
71 	p = __atexit;  in __cxa_atexit()
72 	if (p != NULL) {  in __cxa_atexit()
73 		if (p->ind + 1 >= p->max)  in __cxa_atexit()
74 			p = NULL;  in __cxa_atexit()
75 		else if (mprotect(p, pgsize, PROT_READ | PROT_WRITE))  in __cxa_atexit()
78 	if (p == NULL) {  in __cxa_atexit()
79 		p = mmap(NULL, pgsize, PROT_READ | PROT_WRITE,  in __cxa_atexit()
81 		if (p == MAP_FAILED)  in __cxa_atexit()
84 			memset(&p->fns[0], 0, sizeof(p->fns[0]));  in __cxa_atexit()
85 			p->ind = 1;  in __cxa_atexit()
87 			p->ind = 0;  in __cxa_atexit()
88 		p->max = (pgsize - ((char *)&p->fns[0] - (char *)p)) /  in __cxa_atexit()
89 		    sizeof(p->fns[0]);  in __cxa_atexit()
90 		p->next = __atexit;  in __cxa_atexit()
91 		__atexit = p;  in __cxa_atexit()
95 	fnp = &p->fns[p->ind++];  in __cxa_atexit()
99 	if (mprotect(p, pgsize, PROT_READ))  in __cxa_atexit()
126 	struct atexit *p, *q;  in __cxa_finalize()  local
136 	for (p = __atexit; p != NULL; p = p->next) {  in __cxa_finalize()
137 		for (n = p->ind; --n >= 0;) {  in __cxa_finalize()
138 			if (p->fns[n].fn_ptr.cxa_func == NULL)  in __cxa_finalize()
140 			if (dso != NULL && dso != p->fns[n].fn_dso)  in __cxa_finalize()
147 			fn = p->fns[n];  in __cxa_finalize()
148 			if (mprotect(p, pgsize, PROT_READ | PROT_WRITE) == 0) {  in __cxa_finalize()
149 				p->fns[n].fn_ptr.cxa_func = NULL;  in __cxa_finalize()
150 				mprotect(p, pgsize, PROT_READ);  in __cxa_finalize()
174 		for (p = __atexit; p != NULL; ) {  in __cxa_finalize()
175 			q = p;  in __cxa_finalize()
176 			p = p->next;  in __cxa_finalize()
189 	struct atexit *p;  in __atexit_register_cleanup()  local
192 	if (pgsize < (int)sizeof(*p))  in __atexit_register_cleanup()
195 	p = __atexit;  in __atexit_register_cleanup()
196 	while (p != NULL && p->next != NULL)  in __atexit_register_cleanup()
197 		p = p->next;  in __atexit_register_cleanup()
198 	if (p == NULL) {  in __atexit_register_cleanup()
199 		p = mmap(NULL, pgsize, PROT_READ | PROT_WRITE,  in __atexit_register_cleanup()
201 		if (p == MAP_FAILED)  in __atexit_register_cleanup()
203 		p->ind = 1;  in __atexit_register_cleanup()
204 		p->max = (pgsize - ((char *)&p->fns[0] - (char *)p)) /  in __atexit_register_cleanup()
205 		    sizeof(p->fns[0]);  in __atexit_register_cleanup()
206 		p->next = NULL;  in __atexit_register_cleanup()
207 		__atexit = p;  in __atexit_register_cleanup()
211 		if (mprotect(p, pgsize, PROT_READ | PROT_WRITE))  in __atexit_register_cleanup()
214 	p->fns[0].fn_ptr.std_func = func;  in __atexit_register_cleanup()
215 	p->fns[0].fn_arg = NULL;  in __atexit_register_cleanup()
216 	p->fns[0].fn_dso = NULL;  in __atexit_register_cleanup()
217 	mprotect(p, pgsize, PROT_READ);  in __atexit_register_cleanup()