LXR linux/arch/x86/boot/regs.c

   1/* -----------------------------------------------------------------------
   2 *
   3 *   Copyright 2009 Intel Corporation; author H. Peter Anvin
   4 *
   5 *   This file is part of the Linux kernel, and is made available under
   6 *   the terms of the GNU General Public License version 2 or (at your
   7 *   option) any later version; incorporated herein by reference.
   8 *
   9 * ----------------------------------------------------------------------- */
  10
  11/*
  12 * Simple helper function for initializing a register set.
  13 *
  14 * Note that this sets EFLAGS_CF in the input register set; this
  15 * makes it easier to catch functions which do nothing but don't
  16 * explicitly set CF.
  17 */
  18
  19#include "boot.h"
  20
  21void initregs(struct biosregs *reg)
  22{
  23        memset(reg, 0, sizeof *reg);
  24        reg->eflags |= X86_EFLAGS_CF;
  25        reg->ds = ds();
  26        reg->es = ds();
  27        reg->fs = fs();
  28        reg->gs = gs();
  29}
  30