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-rw-r--r--arch/x86/boot/regs.c29
1 files changed, 29 insertions, 0 deletions
diff --git a/arch/x86/boot/regs.c b/arch/x86/boot/regs.c
new file mode 100644
index 000000000000..958019b1cfa5
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+++ b/arch/x86/boot/regs.c
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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}