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