29 int is_skas_winch(int pid, int fd, void *data)  in is_skas_winch()  argument
31 	return pid == getpgrp();  in is_skas_winch()
82 static int ptrace_dump_regs(int pid)  in ptrace_dump_regs()  argument
87 	if (ptrace(PTRACE_GETREGS, pid, 0, regs) < 0)  in ptrace_dump_regs()
109 void wait_stub_done(int pid)  in wait_stub_done()  argument
114 		CATCH_EINTR(n = waitpid(pid, &status, WUNTRACED | __WALL));  in wait_stub_done()
121 		err = ptrace(PTRACE_CONT, pid, 0, 0);  in wait_stub_done()
133 	err = ptrace_dump_regs(pid);  in wait_stub_done()
138 	       __func__, pid, n, errno, status);  in wait_stub_done()
144 static void get_skas_faultinfo(int pid, struct faultinfo *fi, unsigned long *aux_fp_regs)  in get_skas_faultinfo()  argument
148 	err = get_fp_registers(pid, aux_fp_regs);  in get_skas_faultinfo()
154 	err = ptrace(PTRACE_CONT, pid, 0, SIGSEGV);  in get_skas_faultinfo()
157 		       "errno = %d\n", pid, errno);  in get_skas_faultinfo()
160 	wait_stub_done(pid);  in get_skas_faultinfo()
168 	err = put_fp_registers(pid, aux_fp_regs);  in get_skas_faultinfo()
176 static void handle_segv(int pid, struct uml_pt_regs *regs, unsigned long *aux_fp_regs)  in handle_segv()  argument
178 	get_skas_faultinfo(pid, &regs->faultinfo, aux_fp_regs);  in handle_segv()
182 static void handle_trap(int pid, struct uml_pt_regs *regs)  in handle_trap()  argument
273 	int pid, status, n, flags, err;  in start_userspace()  local
292 	pid = clone(userspace_tramp, (void *) sp, flags, (void *) stub_stack);  in start_userspace()
293 	if (pid < 0) {  in start_userspace()
301 		CATCH_EINTR(n = waitpid(pid, &status, WUNTRACED | __WALL));  in start_userspace()
317 	if (ptrace(PTRACE_SETOPTIONS, pid, NULL,  in start_userspace()
332 	return pid;  in start_userspace()
335 	os_kill_ptraced_process(pid, 1);  in start_userspace()
341 	int err, status, op, pid = userspace_pid[0];  in userspace()  local
371 		if (ptrace(PTRACE_SETREGS, pid, 0, regs->gp)) {  in userspace()
377 		if (put_fp_registers(pid, regs->fp)) {  in userspace()
388 		if (ptrace(op, pid, 0, 0)) {  in userspace()
394 		CATCH_EINTR(err = waitpid(pid, &status, WUNTRACED | __WALL));  in userspace()
402 		if (ptrace(PTRACE_GETREGS, pid, 0, regs->gp)) {  in userspace()
408 		if (get_fp_registers(pid, regs->fp)) {  in userspace()
430 				ptrace(PTRACE_GETSIGINFO, pid, 0, (struct siginfo *)&si);  in userspace()
437 					get_skas_faultinfo(pid,  in userspace()
442 				else handle_segv(pid, regs, aux_fp_regs);  in userspace()
445 				handle_trap(pid, regs);  in userspace()
466 			pid = userspace_pid[0];  in userspace()
591 	userspace_pid[0] = mm_idp->pid;  in __switch_mm()