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/** @file
*
* PXE exit hook
*
*/
/*
* Copyright (C) 2010 Shao Miller <shao.miller@yrdsb.edu.on.ca>.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
FILE_LICENCE ( GPL2_OR_LATER );
#include <stdint.h>
#include <realmode.h>
#include <pxe.h>
/** PXE exit hook */
extern segoff_t __data16 ( pxe_exit_hook );
#define pxe_exit_hook __use_data16 ( pxe_exit_hook )
/**
* FILE EXIT HOOK
*
* @v file_exit_hook Pointer to a struct
* s_PXENV_FILE_EXIT_HOOK
* @v s_PXENV_FILE_EXIT_HOOK::Hook SEG16:OFF16 to jump to
* @ret #PXENV_EXIT_SUCCESS Successfully set hook
* @ret #PXENV_EXIT_FAILURE We're not an NBP build
* @ret s_PXENV_FILE_EXIT_HOOK::Status PXE status code
*
*/
static PXENV_EXIT_t
pxenv_file_exit_hook ( struct s_PXENV_FILE_EXIT_HOOK *file_exit_hook ) {
DBG ( "PXENV_FILE_EXIT_HOOK" );
/* We'll jump to the specified SEG16:OFF16 during exit */
pxe_exit_hook.segment = file_exit_hook->Hook.segment;
pxe_exit_hook.offset = file_exit_hook->Hook.offset;
file_exit_hook->Status = PXENV_STATUS_SUCCESS;
return PXENV_EXIT_SUCCESS;
}
/** PXE file API */
struct pxe_api_call pxe_file_api_exit_hook __pxe_api_call =
PXE_API_CALL ( PXENV_FILE_EXIT_HOOK, pxenv_file_exit_hook,
struct s_PXENV_FILE_EXIT_HOOK );
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