46 lines
906 B
C
46 lines
906 B
C
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "registers.h"
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#include "msdos.h"
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#include "segmem.h"
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#include "wine.h"
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#include "miscemu.h"
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#include "stddebug.h"
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/* #define DEBUG_INT */
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#include "debug.h"
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int do_int25(struct sigcontext_struct *context)
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{
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BYTE *dataptr = SAFEMAKEPTR(DS, BX);
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DWORD begin, length;
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if (CX == 0xffff) {
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begin = getdword(dataptr);
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length = getword(&dataptr[4]);
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dataptr = (BYTE *) getdword(&dataptr[6]);
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} else {
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begin = DX;
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length = CX;
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}
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dprintf_int(stdnimp, "int25: abs diskread, drive %d, sector %ld, "
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"count %ld, buffer %d\n", (int)EAX & 0xff, begin, length, (int) dataptr);
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memset(dataptr, 0, length * 512);
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if (begin == 0 && length > 1)
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*(dataptr + 512) = 0xf8;
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if (begin == 1)
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*dataptr = 0xf8;
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ResetCflag;
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/* push flags on stack */
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SP -= sizeof(WORD);
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setword(SAFEMAKEPTR(SS,SP), (WORD) EFL);
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return 1;
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}
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