| /* |
| * DOS devices |
| * |
| * Copyright 1999 Ove Kåven |
| */ |
| |
| #include <stdlib.h> |
| #include <string.h> |
| #include "wine/winbase16.h" |
| #include "msdos.h" |
| #include "miscemu.h" |
| #include "debug.h" |
| |
| #include "pshpack1.h" |
| |
| typedef struct { |
| DOS_DEVICE_HEADER hdr; |
| BYTE ljmp1; |
| RMCBPROC strategy; |
| BYTE ljmp2; |
| RMCBPROC interrupt; |
| } WINEDEV; |
| |
| #include "poppack.h" |
| |
| DOS_LISTOFLISTS * DOS_LOL; |
| DWORD DOS_LOLSeg; |
| |
| #define NONEXT ((DWORD)-1) |
| |
| #define ATTR_STDIN 0x0001 |
| #define ATTR_STDOUT 0x0002 |
| #define ATTR_NUL 0x0004 |
| #define ATTR_CLOCK 0x0008 |
| #define ATTR_FASTCON 0x0010 |
| #define ATTR_REMOVABLE 0x0800 |
| #define ATTR_NONIBM 0x2000 /* block devices */ |
| #define ATTR_UNTILBUSY 0x2000 /* char devices */ |
| #define ATTR_IOCTL 0x4000 |
| #define ATTR_CHAR 0x8000 |
| |
| #define LJMP 0x9a |
| |
| static void nul_strategy(CONTEXT*ctx) |
| { |
| } |
| |
| static void nul_interrupt(CONTEXT*ctx) |
| { |
| } |
| |
| static void con_strategy(CONTEXT*ctx) |
| { |
| } |
| |
| static void con_interrupt(CONTEXT*ctx) |
| { |
| } |
| |
| #define STRATEGY_OFS sizeof(DOS_DEVICE_HEADER) |
| #define INTERRUPT_OFS STRATEGY_OFS+5 |
| |
| static DOS_DEVICE_HEADER dev_nul_hdr={ |
| NONEXT, |
| ATTR_CHAR|ATTR_NUL, |
| STRATEGY_OFS,INTERRUPT_OFS, |
| "NUL " |
| }; |
| |
| static WINEDEV devs={ |
| {NONEXT, |
| ATTR_CHAR|ATTR_STDIN|ATTR_STDOUT|ATTR_FASTCON, |
| STRATEGY_OFS,INTERRUPT_OFS, |
| "CON "}, |
| LJMP,con_strategy, |
| LJMP,con_interrupt |
| }; |
| #define nr_devs (sizeof(devs)/sizeof(WINEDEV)) |
| |
| static void InitListOfLists() |
| { |
| /* |
| Output of DOS 6.22: |
| |
| 0133:0020 6A 13-33 01 CC 00 33 01 59 00 j.3...3.Y. |
| 0133:0030 70 00 00 00 72 02 00 02-6D 00 33 01 00 00 2E 05 p...r...m.3..... |
| 0133:0040 00 00 FC 04 00 00 03 08-92 21 11 E0 04 80 C6 0D .........!...... |
| 0133:0050 CC 0D 4E 55 4C 20 20 20-20 20 00 00 00 00 00 00 ..NUL ...... |
| 0133:0060 00 4B BA C1 06 14 00 00-00 03 01 00 04 70 CE FF .K...........p.. |
| 0133:0070 FF 00 00 00 00 00 00 00-00 01 00 00 0D 05 00 00 ................ |
| 0133:0080 00 FF FF 00 00 00 00 FE-00 00 F8 03 FF 9F 70 02 ..............p. |
| 0133:0090 D0 44 C8 FD D4 44 C8 FD-D4 44 C8 FD D0 44 C8 FD .D...D...D...D.. |
| 0133:00A0 D0 44 C8 FD D0 44 .D...D |
| */ |
| DOS_LOL->CX_Int21_5e01 = 0x0; |
| DOS_LOL->LRU_count_FCB_cache = 0x0; |
| DOS_LOL->LRU_count_FCB_open = 0x0; |
| DOS_LOL->OEM_func_handler = -1; /* not available */ |
| DOS_LOL->INT21_offset = 0x0; |
| DOS_LOL->sharing_retry_count = 3; |
| DOS_LOL->sharing_retry_delay = 1; |
| DOS_LOL->ptr_disk_buf = 0x0; |
| DOS_LOL->offs_unread_CON = 0x0; |
| DOS_LOL->seg_first_MCB = 0x0; |
| DOS_LOL->ptr_first_DPB = 0x0; |
| DOS_LOL->ptr_first_SysFileTable = 0x0; |
| DOS_LOL->ptr_clock_dev_hdr = 0x0; |
| DOS_LOL->ptr_CON_dev_hdr = 0x0; |
| DOS_LOL->max_byte_per_sec = 512; |
| DOS_LOL->ptr_disk_buf_info = 0x0; |
| DOS_LOL->ptr_array_CDS = 0x0; |
| DOS_LOL->ptr_sys_FCB = 0x0; |
| DOS_LOL->nr_protect_FCB = 0x0; |
| DOS_LOL->nr_block_dev = 0x0; |
| DOS_LOL->nr_avail_drive_letters = 26; /* A - Z */ |
| DOS_LOL->nr_drives_JOINed = 0x0; |
| DOS_LOL->ptr_spec_prg_names = 0x0; |
| DOS_LOL->ptr_SETVER_prg_list = 0x0; /* no SETVER list */ |
| DOS_LOL->DOS_HIGH_A20_func_offs = 0x0; |
| DOS_LOL->PSP_last_exec = 0x0; |
| DOS_LOL->BUFFERS_val = 99; /* maximum: 99 */ |
| DOS_LOL->BUFFERS_nr_lookahead = 8; /* maximum: 8 */ |
| DOS_LOL->boot_drive = 3; /* C: */ |
| DOS_LOL->flag_DWORD_moves = 0x01; /* i386+ */ |
| DOS_LOL->size_extended_mem = 0xf000; /* very high value */ |
| } |
| |
| void DOSDEV_InstallDOSDevices(void) |
| { |
| WINEDEV *dev; |
| DOS_DEVICE_HEADER *pdev; |
| UINT16 seg; |
| int n; |
| WORD ofs = sizeof(DOS_LISTOFLISTS)-sizeof(DOS_DEVICE_HEADER); |
| |
| /* allocate DOS data segment or something */ |
| DOS_LOLSeg = GlobalDOSAlloc16(ofs+sizeof(WINEDEV)+sizeof(devs)); |
| seg = HIWORD(DOS_LOLSeg); |
| DOS_LOL = PTR_SEG_OFF_TO_LIN(LOWORD(DOS_LOLSeg), 0); |
| |
| InitListOfLists(); |
| |
| /* copy first device (NUL) */ |
| pdev = &(DOS_LOL->NUL_dev); |
| memcpy(pdev,&dev_nul_hdr,sizeof(DOS_DEVICE_HEADER)); |
| pdev->strategy += ofs; |
| pdev->interrupt += ofs; |
| /* set up dev so we can copy over the rest */ |
| dev = (WINEDEV*)(((char*)DOS_LOL)+ofs); |
| dev[0].ljmp1 = LJMP; |
| dev[0].strategy = (RMCBPROC)DPMI_AllocInternalRMCB(nul_strategy); |
| dev[0].ljmp2 = LJMP; |
| dev[0].interrupt = (RMCBPROC)DPMI_AllocInternalRMCB(nul_interrupt); |
| |
| dev++; |
| ofs += sizeof(WINEDEV); |
| |
| memcpy(dev,&devs,sizeof(devs)); |
| for (n=0; n<nr_devs; n++) { |
| pdev->next_dev = PTR_SEG_OFF_TO_SEGPTR(seg, ofs); |
| dev[n].hdr.strategy += ofs; |
| dev[n].hdr.interrupt += ofs; |
| dev[n].strategy = (RMCBPROC)DPMI_AllocInternalRMCB(dev[n].strategy); |
| dev[n].interrupt = (RMCBPROC)DPMI_AllocInternalRMCB(dev[n].interrupt); |
| ofs += sizeof(WINEDEV); |
| pdev = &(dev[n].hdr); |
| } |
| } |