27 int is_skas_winch(int pid, int fd, void *data)  in is_skas_winch()  argument
29 	return pid == getpgrp();  in is_skas_winch()
32 static int ptrace_dump_regs(int pid)  in ptrace_dump_regs()  argument
37 	if (ptrace(PTRACE_GETREGS, pid, 0, regs) < 0)  in ptrace_dump_regs()
56 void wait_stub_done(int pid)  in wait_stub_done()  argument
61 		CATCH_EINTR(n = waitpid(pid, &status, WUNTRACED | __WALL));  in wait_stub_done()
68 		err = ptrace(PTRACE_CONT, pid, 0, 0);  in wait_stub_done()
80 	err = ptrace_dump_regs(pid);  in wait_stub_done()
85 	       "pid = %d, n = %d, errno = %d, status = 0x%x\n", pid, n, errno,  in wait_stub_done()
92 static void get_skas_faultinfo(int pid, struct faultinfo *fi, unsigned long *aux_fp_regs)  in get_skas_faultinfo()  argument
96 	err = get_fp_registers(pid, aux_fp_regs);  in get_skas_faultinfo()
102 	err = ptrace(PTRACE_CONT, pid, 0, SIGSEGV);  in get_skas_faultinfo()
105 		       "errno = %d\n", pid, errno);  in get_skas_faultinfo()
108 	wait_stub_done(pid);  in get_skas_faultinfo()
116 	err = put_fp_registers(pid, aux_fp_regs);  in get_skas_faultinfo()
124 static void handle_segv(int pid, struct uml_pt_regs *regs, unsigned long *aux_fp_regs)  in handle_segv()  argument
126 	get_skas_faultinfo(pid, &regs->faultinfo, aux_fp_regs);  in handle_segv()
134 static void handle_trap(int pid, struct uml_pt_regs *regs,  in handle_trap()  argument
144 		err = ptrace(PTRACE_POKEUSER, pid, PT_SYSCALL_NR_OFFSET,  in handle_trap()
152 		err = ptrace(PTRACE_SYSCALL, pid, 0, 0);  in handle_trap()
159 		CATCH_EINTR(err = waitpid(pid, &status, WUNTRACED | __WALL));  in handle_trap()
162 			err = ptrace_dump_regs(pid);  in handle_trap()
270 	int pid, status, n, flags, err;  in start_userspace()  local
289 	pid = clone(userspace_tramp, (void *) sp, flags, (void *) stub_stack);  in start_userspace()
290 	if (pid < 0) {  in start_userspace()
298 		CATCH_EINTR(n = waitpid(pid, &status, WUNTRACED | __WALL));  in start_userspace()
314 	if (ptrace(PTRACE_OLDSETOPTIONS, pid, NULL,  in start_userspace()
329 	return pid;  in start_userspace()
332 	os_kill_ptraced_process(pid, 1);  in start_userspace()
338 	int err, status, op, pid = userspace_pid[0];  in userspace()  local
358 		if (ptrace(PTRACE_SETREGS, pid, 0, regs->gp)) {  in userspace()
364 		if (put_fp_registers(pid, regs->fp)) {  in userspace()
376 		if (ptrace(op, pid, 0, 0)) {  in userspace()
382 		CATCH_EINTR(err = waitpid(pid, &status, WUNTRACED | __WALL));  in userspace()
390 		if (ptrace(PTRACE_GETREGS, pid, 0, regs->gp)) {  in userspace()
396 		if (get_fp_registers(pid, regs->fp)) {  in userspace()
407 			ptrace(PTRACE_GETSIGINFO, pid, 0, (struct siginfo *)&si);  in userspace()
412 					get_skas_faultinfo(pid,  in userspace()
417 				else handle_segv(pid, regs, aux_fp_regs);  in userspace()
420 			        handle_trap(pid, regs, local_using_sysemu);  in userspace()
441 			pid = userspace_pid[0];  in userspace()
471 int copy_context_skas0(unsigned long new_stack, int pid)  in copy_context_skas0()  argument
489 	err = ptrace_setregs(pid, thread_regs);  in copy_context_skas0()
493 		       "failed, pid = %d, errno = %d\n", pid, -err);  in copy_context_skas0()
497 	err = put_fp_registers(pid, thread_fp_regs);  in copy_context_skas0()
500 		       "failed, pid = %d, err = %d\n", pid, err);  in copy_context_skas0()
511 	err = ptrace(PTRACE_CONT, pid, 0, 0);  in copy_context_skas0()
515 		       "errno = %d\n", pid, errno);  in copy_context_skas0()
519 	wait_stub_done(pid);  in copy_context_skas0()
521 	pid = data->err;  in copy_context_skas0()
522 	if (pid < 0) {  in copy_context_skas0()
524 		       "error %d\n", -pid);  in copy_context_skas0()
525 		return pid;  in copy_context_skas0()
532 	wait_stub_done(pid);  in copy_context_skas0()
540 	if (ptrace(PTRACE_OLDSETOPTIONS, pid, NULL,  in copy_context_skas0()
548 	return pid;  in copy_context_skas0()
551 	os_kill_ptraced_process(pid, 1);  in copy_context_skas0()
670 	userspace_pid[0] = mm_idp->u.pid;  in __switch_mm()