registers.c (77bf4400319db9d2a8af6b00c2be6faa0f3d07cb) registers.c (ba180fd437156f7fd8cfb2fdd021d949eeef08d6)
1/*
2 * Copyright (C) 2004 PathScale, Inc
1/*
2 * Copyright (C) 2004 PathScale, Inc
3 * Copyright (C) 2004 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
3 * Licensed under the GPL
4 */
5
6#include <errno.h>
7#include <string.h>
8#include <sys/ptrace.h>
4 * Licensed under the GPL
5 */
6
7#include <errno.h>
8#include <string.h>
9#include <sys/ptrace.h>
9#include "user.h"
10#include "sysdep/ptrace.h"
10#include "sysdep/ptrace.h"
11#include "user.h"
11
12/* This is set once at boot time and not changed thereafter */
13
14static unsigned long exec_regs[MAX_REG_NR];
15
16void init_thread_registers(struct uml_pt_regs *to)
17{
18 memcpy(to->regs, exec_regs, sizeof(to->regs));
19}
20
21void save_registers(int pid, struct uml_pt_regs *regs)
22{
23 int err;
24
25 err = ptrace(PTRACE_GETREGS, pid, 0, regs->regs);
12
13/* This is set once at boot time and not changed thereafter */
14
15static unsigned long exec_regs[MAX_REG_NR];
16
17void init_thread_registers(struct uml_pt_regs *to)
18{
19 memcpy(to->regs, exec_regs, sizeof(to->regs));
20}
21
22void save_registers(int pid, struct uml_pt_regs *regs)
23{
24 int err;
25
26 err = ptrace(PTRACE_GETREGS, pid, 0, regs->regs);
26 if(err < 0)
27 if (err < 0)
27 panic("save_registers - saving registers failed, errno = %d\n",
28 errno);
29}
30
31void restore_registers(int pid, struct uml_pt_regs *regs)
32{
33 int err;
34
35 err = ptrace(PTRACE_SETREGS, pid, 0, regs->regs);
28 panic("save_registers - saving registers failed, errno = %d\n",
29 errno);
30}
31
32void restore_registers(int pid, struct uml_pt_regs *regs)
33{
34 int err;
35
36 err = ptrace(PTRACE_SETREGS, pid, 0, regs->regs);
36 if(err < 0)
37 if (err < 0)
37 panic("restore_registers - saving registers failed, "
38 "errno = %d\n", errno);
39}
40
41void init_registers(int pid)
42{
43 int err;
44
45 err = ptrace(PTRACE_GETREGS, pid, 0, exec_regs);
38 panic("restore_registers - saving registers failed, "
39 "errno = %d\n", errno);
40}
41
42void init_registers(int pid)
43{
44 int err;
45
46 err = ptrace(PTRACE_GETREGS, pid, 0, exec_regs);
46 if(err)
47 if (err)
47 panic("check_ptrace : PTRACE_GETREGS failed, errno = %d",
48 errno);
49}
50
51void get_safe_registers(unsigned long *regs)
52{
53 memcpy(regs, exec_regs, sizeof(exec_regs));
54}
48 panic("check_ptrace : PTRACE_GETREGS failed, errno = %d",
49 errno);
50}
51
52void get_safe_registers(unsigned long *regs)
53{
54 memcpy(regs, exec_regs, sizeof(exec_regs));
55}