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Diffstat (limited to 'usr.sbin/btxld/btx.h')
| -rw-r--r-- | usr.sbin/btxld/btx.h | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/usr.sbin/btxld/btx.h b/usr.sbin/btxld/btx.h new file mode 100644 index 0000000..4a31012 --- /dev/null +++ b/usr.sbin/btxld/btx.h @@ -0,0 +1,68 @@ +/* + * Copyright (c) 1998 Robert Nordier + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS + * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, + * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR + * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE + * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, + * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * $Id:$ + */ + +#ifndef _BTX_H_ +#define _BTX_H_ + +#include <sys/types.h> + +#define BTX_PGSIZE 0x1000 /* Page size */ +#define BTX_PGBASE 0x5000 /* Start of page tables */ +#define BTX_MAXCWR 0x3bc /* Max. btx_pgctl adjustment */ + +/* + * BTX image header. + */ +struct btx_hdr { + uint8_t btx_machid; /* Machine ID */ + uint8_t btx_hdrsz; /* Header size */ + uint8_t btx_magic[3]; /* Magic */ + uint8_t btx_majver; /* Major version */ + uint8_t btx_minver; /* Minor version */ + uint8_t btx_flags; /* Flags */ + uint16_t btx_pgctl; /* Paging control */ + uint16_t btx_textsz; /* Text size */ + uint32_t btx_entry; /* Client entry address */ +}; + +/* btx_machid */ +#define BTX_I386 0xeb /* Intel i386 or compatible */ + +/* btx_magic */ +#define BTX_MAG0 'B' +#define BTX_MAG1 'T' +#define BTX_MAG2 'X' + +/* btx_flags */ +#define BTX_MAPONE 0x80 /* Start mapping at page 1 */ + +#define BTX_MAPPED(btx) (((btx).btx_pgctl | (BTX_PGSIZE / 4 - 1)) + 1) +#define BTX_ORIGIN(btx) (BTX_PGBASE + BTX_MAPPED(btx) * 4) +#define BTX_ENTRY(btx) (BTX_ORIGIN(btx) + 2 + (btx).btx_hdrsz) + +#endif /* !_BTX_H_ */ |
