38 static void makectx_wrapper(ucontext_t *ucp, func_t func, uint64_t *args);
43 __makecontext(ucontext_t *ucp, void (*start)(void), int argc, ...)  in __makecontext()  argument
51 	if ((ucp == NULL) || (ucp->uc_mcontext.mc_len != sizeof(mcontext_t)))  in __makecontext()
53 	else if ((argc < 0) || (argc > 6) || (ucp->uc_stack.ss_sp == NULL) ||  in __makecontext()
54 	    (ucp->uc_stack.ss_size < MINSIGSTKSZ)) {  in __makecontext()
61 		ucp->uc_mcontext.mc_len = 0;  in __makecontext()
66 	sp = (uint64_t *)(ucp->uc_stack.ss_sp + ucp->uc_stack.ss_size);  in __makecontext()
87 	ucp->uc_mcontext.mc_rdi = (register_t)ucp;  in __makecontext()
88 	ucp->uc_mcontext.mc_rsi = (register_t)start;  in __makecontext()
89 	ucp->uc_mcontext.mc_rdx = (register_t)args;  in __makecontext()
90 	ucp->uc_mcontext.mc_rbp = 0;  in __makecontext()
91 	ucp->uc_mcontext.mc_rbx = (register_t)sp;  in __makecontext()
92 	ucp->uc_mcontext.mc_rsp = (register_t)sp;  in __makecontext()
93 	ucp->uc_mcontext.mc_rip = (register_t)makectx_wrapper;  in __makecontext()
97 makectx_wrapper(ucontext_t *ucp, func_t func, uint64_t *args)  in makectx_wrapper()  argument
100 	if (ucp->uc_link == NULL)  in makectx_wrapper()
102 	setcontext((const ucontext_t *)ucp->uc_link);  in makectx_wrapper()