55 lines
1.1 KiB
C
55 lines
1.1 KiB
C
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/*
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* Copyright (C) 2004 PathScale, Inc
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* Licensed under the GPL
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*/
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#include <errno.h>
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#include <string.h>
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#include <sys/ptrace.h>
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#include "user.h"
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#include "sysdep/ptrace.h"
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/* This is set once at boot time and not changed thereafter */
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static unsigned long exec_regs[MAX_REG_NR];
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void init_thread_registers(union uml_pt_regs *to)
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{
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memcpy(to->skas.regs, exec_regs, sizeof(to->skas.regs));
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}
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void save_registers(int pid, union uml_pt_regs *regs)
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{
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int err;
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err = ptrace(PTRACE_GETREGS, pid, 0, regs->skas.regs);
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if(err < 0)
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panic("save_registers - saving registers failed, errno = %d\n",
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errno);
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}
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void restore_registers(int pid, union uml_pt_regs *regs)
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{
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int err;
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err = ptrace(PTRACE_SETREGS, pid, 0, regs->skas.regs);
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if(err < 0)
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panic("restore_registers - saving registers failed, "
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"errno = %d\n", errno);
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}
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void init_registers(int pid)
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{
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int err;
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err = ptrace(PTRACE_GETREGS, pid, 0, exec_regs);
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if(err)
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panic("check_ptrace : PTRACE_GETREGS failed, errno = %d",
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errno);
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}
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void get_safe_registers(unsigned long *regs)
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{
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memcpy(regs, exec_regs, sizeof(exec_regs));
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}
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