2 * Copyright (C) 2004 PathScale, Inc
3 * Copyright (C) 2004 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
4 * Licensed under the GPL
9 #include <sys/ptrace.h>
10 #include "sysdep/ptrace.h"
13 /* This is set once at boot time and not changed thereafter */
15 static unsigned long exec_regs[MAX_REG_NR];
17 void init_thread_registers(struct uml_pt_regs *to)
19 memcpy(to->gp, exec_regs, sizeof(to->gp));
22 void save_registers(int pid, struct uml_pt_regs *regs)
26 err = ptrace(PTRACE_GETREGS, pid, 0, regs->gp);
28 panic("save_registers - saving registers failed, errno = %d\n",
32 void restore_registers(int pid, struct uml_pt_regs *regs)
36 err = ptrace(PTRACE_SETREGS, pid, 0, regs->gp);
38 panic("restore_registers - saving registers failed, "
39 "errno = %d\n", errno);
42 void init_registers(int pid)
46 err = ptrace(PTRACE_GETREGS, pid, 0, exec_regs);
48 panic("check_ptrace : PTRACE_GETREGS failed, errno = %d",
51 arch_init_registers(pid);
54 void get_safe_registers(unsigned long *regs)
56 memcpy(regs, exec_regs, sizeof(exec_regs));