blob: 073be74d87dd37876d4f6c7c3b4957ee2e0b463f (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
|
/*
* hostdep.h : things which are dependent on the host architecture
*
* * Written by Peter Maydell <peter.maydell@linaro.org>
*
* Copyright (C) 2016 Linaro Limited
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*/
#ifndef I386_HOSTDEP_H
#define I386_HOSTDEP_H
/* We have a safe-syscall.inc.S */
#define HAVE_SAFE_SYSCALL
#ifndef __ASSEMBLER__
/* These are defined by the safe-syscall.inc.S file */
extern char safe_syscall_start[];
extern char safe_syscall_end[];
/* Adjust the signal context to rewind out of safe-syscall if we're in it */
static inline void rewind_if_in_safe_syscall(void *puc)
{
ucontext_t *uc = puc;
greg_t *pcreg = &uc->uc_mcontext.gregs[REG_EIP];
if (*pcreg > (uintptr_t)safe_syscall_start
&& *pcreg < (uintptr_t)safe_syscall_end) {
*pcreg = (uintptr_t)safe_syscall_start;
}
}
#endif /* __ASSEMBLER__ */
#endif
|
