mcontext.h

 1/* 
 2 * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
 3 * Licensed under the GPL
 4 */
 5
 6#ifndef __SYS_SIGCONTEXT_X86_H
 7#define __SYS_SIGCONTEXT_X86_H
 8
 9#include <stub-data.h>
10
11extern void get_regs_from_mc(struct uml_pt_regs *, mcontext_t *);
12extern void get_mc_from_regs(struct uml_pt_regs *regs, mcontext_t *mc,
13			     int single_stepping);
14
15extern int get_stub_state(struct uml_pt_regs *regs, struct stub_data *data,
16			  unsigned long *fp_size_out);
17extern int set_stub_state(struct uml_pt_regs *regs, struct stub_data *data,
18			  int single_stepping);
19
20#ifdef __i386__
21
22#define GET_FAULTINFO_FROM_MC(fi, mc) \
23	{ \
24		(fi).cr2 = (mc)->cr2; \
25		(fi).error_code = (mc)->gregs[REG_ERR]; \
26		(fi).trap_no = (mc)->gregs[REG_TRAPNO]; \
27	}
28
29#else
30
31#define GET_FAULTINFO_FROM_MC(fi, mc) \
32	{ \
33		(fi).cr2 = (mc)->gregs[REG_CR2]; \
34		(fi).error_code = (mc)->gregs[REG_ERR]; \
35		(fi).trap_no = (mc)->gregs[REG_TRAPNO]; \
36	}
37
38#endif
39
40#endif