53 строки
1021 B
C
53 строки
1021 B
C
/*
|
|
* Copyright (C) 2006 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
|
|
* Licensed under the GPL
|
|
*/
|
|
|
|
#include <errno.h>
|
|
#include <sys/ptrace.h>
|
|
#define __FRAME_OFFSETS
|
|
#include <asm/ptrace.h>
|
|
#include "kern_constants.h"
|
|
#include "longjmp.h"
|
|
#include "user.h"
|
|
|
|
int save_fp_registers(int pid, unsigned long *fp_regs)
|
|
{
|
|
if (ptrace(PTRACE_GETFPREGS, pid, 0, fp_regs) < 0)
|
|
return -errno;
|
|
return 0;
|
|
}
|
|
|
|
int restore_fp_registers(int pid, unsigned long *fp_regs)
|
|
{
|
|
if (ptrace(PTRACE_SETFPREGS, pid, 0, fp_regs) < 0)
|
|
return -errno;
|
|
return 0;
|
|
}
|
|
|
|
unsigned long get_thread_reg(int reg, jmp_buf *buf)
|
|
{
|
|
switch (reg) {
|
|
case RIP:
|
|
return buf[0]->__rip;
|
|
case RSP:
|
|
return buf[0]->__rsp;
|
|
case RBP:
|
|
return buf[0]->__rbp;
|
|
default:
|
|
printk(UM_KERN_ERR "get_thread_regs - unknown register %d\n",
|
|
reg);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
int get_fp_registers(int pid, unsigned long *regs)
|
|
{
|
|
return save_fp_registers(pid, regs);
|
|
}
|
|
|
|
int put_fp_registers(int pid, unsigned long *regs)
|
|
{
|
|
return restore_fp_registers(pid, regs);
|
|
}
|