27 int is_skas_winch(int pid, int fd, void *data)  in is_skas_winch()  argument
29 	return pid == getpgrp();  in is_skas_winch()
80 static int ptrace_dump_regs(int pid)  in ptrace_dump_regs()  argument
85 	if (ptrace(PTRACE_GETREGS, pid, 0, regs) < 0)  in ptrace_dump_regs()
107 void wait_stub_done(int pid)  in wait_stub_done()  argument
112 		CATCH_EINTR(n = waitpid(pid, &status, WUNTRACED | __WALL));  in wait_stub_done()
119 		err = ptrace(PTRACE_CONT, pid, 0, 0);  in wait_stub_done()
131 	err = ptrace_dump_regs(pid);  in wait_stub_done()
136 	       "pid = %d, n = %d, errno = %d, status = 0x%x\n", pid, n, errno,  in wait_stub_done()
143 static void get_skas_faultinfo(int pid, struct faultinfo *fi, unsigned long *aux_fp_regs)  in get_skas_faultinfo()  argument
147 	err = get_fp_registers(pid, aux_fp_regs);  in get_skas_faultinfo()
153 	err = ptrace(PTRACE_CONT, pid, 0, SIGSEGV);  in get_skas_faultinfo()
156 		       "errno = %d\n", pid, errno);  in get_skas_faultinfo()
159 	wait_stub_done(pid);  in get_skas_faultinfo()
167 	err = put_fp_registers(pid, aux_fp_regs);  in get_skas_faultinfo()
175 static void handle_segv(int pid, struct uml_pt_regs *regs, unsigned long *aux_fp_regs)  in handle_segv()  argument
177 	get_skas_faultinfo(pid, &regs->faultinfo, aux_fp_regs);  in handle_segv()
185 static void handle_trap(int pid, struct uml_pt_regs *regs,  in handle_trap()  argument
195 		err = ptrace(PTRACE_POKEUSER, pid, PT_SYSCALL_NR_OFFSET,  in handle_trap()
203 		err = ptrace(PTRACE_SYSCALL, pid, 0, 0);  in handle_trap()
210 		CATCH_EINTR(err = waitpid(pid, &status, WUNTRACED | __WALL));  in handle_trap()
213 			err = ptrace_dump_regs(pid);  in handle_trap()
317 	int pid, status, n, flags, err;  in start_userspace()  local
336 	pid = clone(userspace_tramp, (void *) sp, flags, (void *) stub_stack);  in start_userspace()
337 	if (pid < 0) {  in start_userspace()
345 		CATCH_EINTR(n = waitpid(pid, &status, WUNTRACED | __WALL));  in start_userspace()
361 	if (ptrace(PTRACE_OLDSETOPTIONS, pid, NULL,  in start_userspace()
376 	return pid;  in start_userspace()
379 	os_kill_ptraced_process(pid, 1);  in start_userspace()
385 	int err, status, op, pid = userspace_pid[0];  in userspace()  local
405 		if (ptrace(PTRACE_SETREGS, pid, 0, regs->gp)) {  in userspace()
411 		if (put_fp_registers(pid, regs->fp)) {  in userspace()
423 		if (ptrace(op, pid, 0, 0)) {  in userspace()
429 		CATCH_EINTR(err = waitpid(pid, &status, WUNTRACED | __WALL));  in userspace()
437 		if (ptrace(PTRACE_GETREGS, pid, 0, regs->gp)) {  in userspace()
443 		if (get_fp_registers(pid, regs->fp)) {  in userspace()
465 				ptrace(PTRACE_GETSIGINFO, pid, 0, (struct siginfo *)&si);  in userspace()
472 					get_skas_faultinfo(pid,  in userspace()
477 				else handle_segv(pid, regs, aux_fp_regs);  in userspace()
480 			        handle_trap(pid, regs, local_using_sysemu);  in userspace()
501 			pid = userspace_pid[0];  in userspace()
531 int copy_context_skas0(unsigned long new_stack, int pid)  in copy_context_skas0()  argument
555 	err = ptrace_setregs(pid, thread_regs);  in copy_context_skas0()
559 		       "failed, pid = %d, errno = %d\n", pid, -err);  in copy_context_skas0()
563 	err = put_fp_registers(pid, thread_fp_regs);  in copy_context_skas0()
566 		       "failed, pid = %d, err = %d\n", pid, err);  in copy_context_skas0()
574 	err = ptrace(PTRACE_CONT, pid, 0, 0);  in copy_context_skas0()
578 		       "errno = %d\n", pid, errno);  in copy_context_skas0()
582 	wait_stub_done(pid);  in copy_context_skas0()
584 	pid = data->parent_err;  in copy_context_skas0()
585 	if (pid < 0) {  in copy_context_skas0()
587 		       "error %d\n", -pid);  in copy_context_skas0()
588 		return pid;  in copy_context_skas0()
595 	wait_stub_done(pid);  in copy_context_skas0()
598 		       "error %ld\n", pid, data->child_err);  in copy_context_skas0()
603 	if (ptrace(PTRACE_OLDSETOPTIONS, pid, NULL,  in copy_context_skas0()
611 	return pid;  in copy_context_skas0()
614 	os_kill_ptraced_process(pid, 1);  in copy_context_skas0()
733 	userspace_pid[0] = mm_idp->u.pid;  in __switch_mm()