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