home *** CD-ROM | disk | FTP | other *** search
- /* Copyright (C) 1995,1996 CW Sandmann (sandmann@clio.rice.edu) 1206 Braelinn, Sugarland, TX 77479
- ** Copyright (C) 1993 DJ Delorie, 24 Kirsten Ave, Rochester NH 03867-2954
- **
- ** This file is distributed under the terms listed in the document
- ** "copying.cws", available from CW Sandmann at the address above.
- ** A copy of "copying.cws" should accompany this file; if not, a copy
- ** should be available from where this file was obtained. This file
- ** may not be distributed without a verbatim copy of "copying.cws".
- **
- ** This file is distributed WITHOUT ANY WARRANTY; without even the implied
- ** warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- */
-
- #include <dos.h>
- #include "gotypes.h"
- #include "tss.h"
- #include "gdt.h"
- #include "utils.h"
- #include "mswitch.h"
- #include "exphdlr.h"
- #include "control.h"
- #include "dpmisim.h"
-
- extern void _do_memmov32();
-
- TSS *utils_tss = &o_tss;
-
- void go_til_stop(int allow_ret)
- {
- while (1)
- {
- go32();
- if (!was_exception){
- if(allow_ret && !(word16)tss_ptr->tss_ebx) /* BX is SP for RAW */
- return;
- do_raw_switch(); /* jmpt ctss with BX non-zero */
- } else if (exception_handler())
- do_faulting_finish_message();
- }
- }
-
- void memput(word16 umemsel, word32 vaddr, void far *ptr, word16 len)
- {
- TSS *old_ptr;
- utils_tss->tss_eip = (word16)_do_memmov32;
- utils_tss->tss_ecx = len;
- utils_tss->tss_es = umemsel;
- utils_tss->tss_edi = vaddr;
- utils_tss->tss_ds = g_core*8;
- utils_tss->tss_esi = (word32)FP_SEG(ptr)*16 + (word32)FP_OFF(ptr);
- old_ptr = tss_ptr;
- tss_ptr = utils_tss;
- go_til_stop(1);
- tss_ptr = old_ptr;
- }
-
- void memget(word16 umemsel, word32 vaddr, void far *ptr, word16 len)
- {
- TSS *old_ptr;
- utils_tss->tss_eip = (word16)_do_memmov32;
- utils_tss->tss_ecx = len;
- utils_tss->tss_es = g_core*8;
- utils_tss->tss_edi = (word32)FP_SEG(ptr)*16 + (word32)FP_OFF(ptr);
- utils_tss->tss_ds = umemsel;
- utils_tss->tss_esi = vaddr;
- old_ptr = tss_ptr;
- tss_ptr = utils_tss;
- go_til_stop(1);
- tss_ptr = old_ptr;
- }
-