diff options
author | H. Peter Anvin <hpa@zytor.com> | 2009-06-26 17:44:22 -0700 |
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committer | H. Peter Anvin <hpa@zytor.com> | 2009-06-26 17:44:22 -0700 |
commit | b1deeb181382bad22846f9c467b64fbda6665e8f (patch) | |
tree | dab19a181948aab07de5d0be28dec020f556757d /sample | |
parent | 621eb2d9deb094d78001f841f3aadcf0f63f2477 (diff) | |
download | syslinux-b1deeb181382bad22846f9c467b64fbda6665e8f.tar.gz |
Create a dosutil subdirectory and move mdiskchk there
DOS utilities aren't really "samples". Create a dedicated "dosutil"
directory, and move mdiskchk there for now.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'sample')
-rw-r--r-- | sample/mdiskchk.c | 146 | ||||
-rwxr-xr-x | sample/mdiskchk.com | bin | 9680 -> 0 bytes |
2 files changed, 0 insertions, 146 deletions
diff --git a/sample/mdiskchk.c b/sample/mdiskchk.c deleted file mode 100644 index eec5be40..00000000 --- a/sample/mdiskchk.c +++ /dev/null @@ -1,146 +0,0 @@ -/* -*- c -*- ------------------------------------------------------------- * - * - * Copyright 2003-2008 H. Peter Anvin - All Rights Reserved - * - * 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, Inc., 53 Temple Place Ste 330, - * Boston MA 02111-1307, USA; either version 2 of the License, or - * (at your option) any later version; incorporated herein by reference. - * - * ----------------------------------------------------------------------- */ - -/* - * mdiskchk.c - * - * DOS program to check for the existence of a memdisk. - * - * This program can be compiled for DOS with the OpenWatcom compiler - * (http://www.openwatcom.org/): - * - * wcl -3 -osx -mt mdiskchk.c - */ - -#include <stdio.h> -#include <string.h> -#include <i86.h> /* For MK_FP() */ - -typedef unsigned long uint32_t; -typedef unsigned short uint16_t; -typedef unsigned char uint8_t; - -struct memdiskinfo { - uint16_t bytes; /* Bytes from memdisk */ - uint16_t version; /* Memdisk version */ - uint32_t base; /* Base of disk in high memory */ - uint32_t size; /* Size of disk in sectors */ - char far *cmdline; /* Command line */ - void far *oldint13; /* Old INT 13h */ - void far *oldint15; /* Old INT 15h */ - uint16_t olddosmem; - uint8_t bootloaderid; - - uint8_t _pad; - - /* We add our own fields at the end */ - int cylinders; - int heads; - int sectors; -}; - -struct memdiskinfo *query_memdisk(int drive) -{ - static struct memdiskinfo mm; - uint32_t _eax, _ebx, _ecx, _edx; - uint16_t _es, _di; - unsigned char _dl = drive; - uint16_t bytes; - - __asm { - .386; - mov eax, 454 d0800h; - mov ecx, 444 d0000h; - mov edx, 53490000 h; - mov dl, _dl; - mov ebx, 3f 4 b0000h; - int 13 h; - mov _eax, eax; - mov _ecx, ecx; - mov _edx, edx; - mov _ebx, ebx; - mov _es, es; - mov _di, di; - } - - if (_eax >> 16 != 0x4d21 || - _ecx >> 16 != 0x4d45 || _edx >> 16 != 0x4944 || _ebx >> 16 != 0x4b53) - return NULL; - - memset(&mm, 0, sizeof mm); - - bytes = *(uint16_t far *) MK_FP(_es, _di); - - /* 27 is the most we know how to handle */ - if (bytes > 27) - bytes = 27; - - _fmemcpy((void far *)&mm, (void far *)MK_FP(_es, _di), bytes); - - mm.cylinders = ((_ecx >> 8) & 0xff) + ((_ecx & 0xc0) << 2) + 1; - mm.heads = ((_edx >> 8) & 0xff) + 1; - mm.sectors = (_ecx & 0x3f); - - return &mm; -} - -const char *bootloadername(uint8_t id) -{ - static const struct { - uint8_t id, mask; - const char *name; - } *lp, list[] = { - { - 0x00, 0xf0, "LILO"}, { - 0x10, 0xf0, "LOADLIN"}, { - 0x31, 0xff, "SYSLINUX"}, { - 0x32, 0xff, "PXELINUX"}, { - 0x33, 0xff, "ISOLINUX"}, { - 0x34, 0xff, "EXTLINUX"}, { - 0x30, 0xf0, "SYSLINUX family"}, { - 0x40, 0xf0, "Etherboot"}, { - 0x50, 0xf0, "ELILO"}, { - 0x70, 0xf0, "GrUB"}, { - 0x80, 0xf0, "U-Boot"}, { - 0xA0, 0xf0, "Gujin"}, { - 0xB0, 0xf0, "Qemu"}, { - 0x00, 0x00, "unknown"} - }; - - for (lp = list;; lp++) { - if (((id ^ lp->id) & lp->mask) == 0) - return lp->name; - } -} - -int main(int argc, char *argv[]) -{ - int d; - int found = 0; - struct memdiskinfo *m; - - for (d = 0; d <= 0xff; d++) { - if ((m = query_memdisk(d)) != NULL) { - printf("Drive %02X is MEMDISK %u.%02u:\n" - "\tAddress = 0x%08lx, len = %lu sectors, chs = %u/%u/%u,\n" - "\tloader = 0x%02x (%s),\n" - "\tcmdline = %Fs\n", - d, m->version >> 8, m->version & 0xff, - m->base, m->size, m->cylinders, m->heads, m->sectors, - m->bootloaderid, bootloadername(m->bootloaderid), - m->cmdline); - found++; - } - } - - return found; -} diff --git a/sample/mdiskchk.com b/sample/mdiskchk.com Binary files differdeleted file mode 100755 index 07e1471b..00000000 --- a/sample/mdiskchk.com +++ /dev/null |