1/*
2 * Copyright (C) 2001 Chris Emerson (cemerson@chiark.greenend.org.uk)
3 * Copyright (C) 2001, 2002 Jeff Dike (jdike@karaya.com)
4 * Licensed under the GPL
5 */
6
7#include <stddef.h>
8#include "longjmp.h"
9
10unsigned long __do_user_copy(void *to, const void *from, int n,
11			     void **fault_addr, void **fault_catcher,
12			     void (*op)(void *to, const void *from,
13					int n), int *faulted_out)
14{
15	unsigned long *faddrp = (unsigned long *) fault_addr, ret;
16
17	jmp_buf jbuf;
18	*fault_catcher = &jbuf;
19	if(UML_SETJMP(&jbuf) == 0){
20		(*op)(to, from, n);
21		ret = 0;
22		*faulted_out = 0;
23	}
24	else {
25		ret = *faddrp;
26		*faulted_out = 1;
27	}
28	*fault_addr = NULL;
29	*fault_catcher = NULL;
30	return ret;
31}
32