blob: e523719330b27cb2b0a29bd1dacbf15bc8b1ca05 [file] [log] [blame]
Gennady Sharapovbb578422005-11-07 00:58:50 -08001/*
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 <setjmp.h>
8#include <string.h>
Jeff Dike1d7173b2006-01-18 17:42:49 -08009#include "longjmp.h"
Gennady Sharapovbb578422005-11-07 00:58:50 -080010
11unsigned long __do_user_copy(void *to, const void *from, int n,
12 void **fault_addr, void **fault_catcher,
13 void (*op)(void *to, const void *from,
14 int n), int *faulted_out)
15{
16 unsigned long *faddrp = (unsigned long *) fault_addr, ret;
Jeff Dike1d7173b2006-01-18 17:42:49 -080017 int enable;
Gennady Sharapovbb578422005-11-07 00:58:50 -080018
Jeff Dikead28e0292006-04-18 22:21:41 -070019 jmp_buf jbuf;
Gennady Sharapovbb578422005-11-07 00:58:50 -080020 *fault_catcher = &jbuf;
Jeff Dikead28e0292006-04-18 22:21:41 -070021 if(UML_SETJMP(&jbuf, enable) == 0){
Gennady Sharapovbb578422005-11-07 00:58:50 -080022 (*op)(to, from, n);
23 ret = 0;
24 *faulted_out = 0;
25 }
26 else {
27 ret = *faddrp;
28 *faulted_out = 1;
29 }
30 *fault_addr = NULL;
31 *fault_catcher = NULL;
32 return ret;
33}
34