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authorH. Peter Anvin <hpa@zytor.com>2009-06-26 17:44:22 -0700
committerH. Peter Anvin <hpa@zytor.com>2009-06-26 17:44:22 -0700
commitb1deeb181382bad22846f9c467b64fbda6665e8f (patch)
treedab19a181948aab07de5d0be28dec020f556757d /sample
parent621eb2d9deb094d78001f841f3aadcf0f63f2477 (diff)
downloadsyslinux.git-b1deeb181382bad22846f9c467b64fbda6665e8f.tar.gz
syslinux.git-b1deeb181382bad22846f9c467b64fbda6665e8f.tar.xz
syslinux.git-b1deeb181382bad22846f9c467b64fbda6665e8f.zip
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.c146
-rwxr-xr-xsample/mdiskchk.combin9680 -> 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
deleted file mode 100755
index 07e1471b..00000000
--- a/sample/mdiskchk.com
+++ /dev/null
Binary files differ