[deliverable/linux.git] / arch / x86 / boot / regs.c

/* -----------------------------------------------------------------------
 *
 *   Copyright 2009 Intel Corporation; author H. Peter Anvin
 *
 *   This file is part of the Linux kernel, and is made available under
 *   the terms of the GNU General Public License version 2 or (at your
 *   option) any later version; incorporated herein by reference.
 *
 * ----------------------------------------------------------------------- */

/*
 * Simple helper function for initializing a register set.
 *
 * Note that this sets EFLAGS_CF in the input register set; this
 * makes it easier to catch functions which do nothing but don't
 * explicitly set CF.
 */

#include "boot.h"
#include "string.h"

void initregs(struct biosregs *reg)
{
	memset(reg, 0, sizeof *reg);
	reg->eflags |= X86_EFLAGS_CF;
	reg->ds = ds();
	reg->es = ds();
	reg->fs = fs();
	reg->gs = gs();
}
Commit	Line	Data
7a734e7d PA	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"
c041b5ad	20	#include "string.h"
7a734e7d PA	21
	22	void initregs(struct biosregs *reg)
	23	{
	24	memset(reg, 0, sizeof *reg);
	25	reg->eflags \|= X86_EFLAGS_CF;
	26	reg->ds = ds();
	27	reg->es = ds();
	28	reg->fs = fs();
	29	reg->gs = gs();
	30	}