X-Git-Url: http://git.osdn.net/view?p=proj16%2F16.git;a=blobdiff_plain;f=src%2Flib%2F16_mm.c;h=47fde07ead0b09be407aa61cdfea5a963c34b7fc;hp=93bd2d71ebcdd364301eedde16e472492fd84a59;hb=4d4c2774d4e51f7356f7a5ef32ef61a9fd2c299a;hpb=1d5d18a6c438c7b78af0b91ca29e41747aa0d148 diff --git a/src/lib/16_mm.c b/src/lib/16_mm.c index 93bd2d71..47fde07e 100755 --- a/src/lib/16_mm.c +++ b/src/lib/16_mm.c @@ -1,1797 +1,2083 @@ -/* Catacomb Apocalypse Source Code - * Copyright (C) 1993-2014 Flat Rock Software - * - * 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; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. - */ - -// NEWMM.C - -/* -============================================================================= - - ID software memory manager - -------------------------- - -Primary coder: John Carmack - -RELIES ON ---------- -Quit (global_game_variables_t *gvar, char *error) function - - -WORK TO DO ----------- -MM_SizePtr to change the size of a given pointer - -Multiple purge levels utilized - -EMS / XMS unmanaged routines - -============================================================================= -*/ -/* - -Open Watcom port by sparky4 - -*/ -#include "src/lib/16_mm.h" -#include "src/lib/16_ca.h" -#include -#pragma hdrstop - -#pragma warn -pro -#pragma warn -use - -/* -============================================================================= - - GLOBAL VARIABLES - -============================================================================= -*/ - -void (* beforesort) (void); -void (* aftersort) (void); -void (* XMSaddr) (void); // far pointer to XMS driver - -/* -============================================================================= - - LOCAL VARIABLES - -============================================================================= -*/ -#ifndef __16_PM__ -static char *ParmStringsexmm[] = {"noems","noxms",""}; -#endif -/* -====================== -= -= MML_CheckForEMS -= -= Routine from p36 of Extending DOS -= -======================= -*/ - -boolean MML_CheckForEMS(void) -{ - boolean emmcfems=0; - static char emmname[] = "EMMXXXX0"; //fix by andrius4669 - __asm { - mov dx,OFFSET emmname //fix by andrius4669 - mov ax,0x3d00 - int 0x21 // try to open EMMXXXX0 device - jc error - - mov bx,ax - mov ax,0x4400 - - int 0x21 // get device info - jc error - - and dx,0x80 - jz error - - mov ax,0x4407 - - int 0x21 // get status - jc error - or al,al - jz error - - mov ah,0x3e - int 0x21 // close handle - jc error - // - // EMS is good - // - mov emmcfems,1 - jmp End -#ifdef __BORLANDC__ - } -#endif - error: -#ifdef __BORLANDC__ - __asm { -#endif - // - // EMS is bad - // - mov emmcfems,0 -#ifdef __BORLANDC__ - } -#endif - End: -#ifdef __WATCOMC__ - } -#endif - return(emmcfems); -} - -#ifndef __16_PM__ -/* -====================== -= -= MML_SetupEMS -= -======================= -*/ - -byte MML_SetupEMS(global_game_variables_t *gvar) -{ - byte str[160]; - byte err; - boolean errorflag=false; - - unsigned int EMSVer = 0; - //byte EMS_status; - unsigned totalEMSpages,freeEMSpages,EMSPageFrame,EMSpagesmapped,EMSHandle; - totalEMSpages = freeEMSpages = EMSPageFrame = EMSpagesmapped = 0; - - __asm { - mov ah,EMS_STATUS - int EMS_INT // make sure EMS hardware is present - or ah,ah - //mov [EMS_status],ah - jnz error - - mov ah,EMS_VERSION - int EMS_INT - or ah,ah - jnz error - mov [EMSVer],ax // set EMSVer - cmp al,0x32 // only work on ems 3.2 or greater - jb error - - mov ah,EMS_GETFRAME - int EMS_INT // find the page frame address - or ah,ah - jnz error - mov [EMSPageFrame],bx - - mov ah,EMS_GETPAGES - int EMS_INT // find out how much EMS is there - or ah,ah - jnz error - mov [totalEMSpages],dx - mov [freeEMSpages],bx - or bx,bx - jz noEMS // no EMS at all to allocate - //EXPAND DONG!!!! - cmp [EMSVer],0x40 - jb low - cmp bx,[freeEMSpages] - jle getpages - mov bx,[freeEMSpages] - jmp getpages -#ifdef __BORLANDC__ - } -#endif - low: -#ifdef __BORLANDC__ - __asm { -#endif - cmp bx,4 - jle getpages // there is only 1,2,3,or 4 pages - mov bx,4 // we can't use more than 4 pages -#ifdef __BORLANDC__ - } -#endif - getpages: -#ifdef __BORLANDC__ - __asm { -#endif - mov [EMSpagesmapped],bx - mov ah,EMS_ALLOCPAGES // allocate up to 64k of EMS - int EMS_INT - or ah,ah - jnz error - mov [EMSHandle],dx - jmp End -#ifdef __BORLANDC__ - } -#endif - error: -#ifdef __BORLANDC__ - __asm { -#endif - mov err,ah - mov errorflag,1 - jmp End -#ifdef __BORLANDC__ - } -#endif -noEMS: -End: -#ifdef __WATCOMC__ - } -#endif - if(errorflag==true) - { - strcpy(str,"MM_SetupEMS: EMS error "); - MM_EMSerr(str, err); - printf("%s\n",str); - return err; - } - gvar->mm.totalEMSpages=totalEMSpages; - gvar->mm.freeEMSpages=freeEMSpages; - gvar->mm.EMSPageFrame=EMSPageFrame; - gvar->mm.EMSpagesmapped=EMSpagesmapped; - gvar->mm.EMSHandle=EMSHandle; - gvar->mm.EMSVer=EMSVer; - return 0; -} - - -/* -====================== -= -= MML_ShutdownEMS -= -======================= -*/ - -void MML_ShutdownEMS(global_game_variables_t *gvar) -{ - boolean errorflag=false; - unsigned EMSHandle=gvar->mm.EMSHandle; - - if(!EMSHandle) - return; - __asm { - mov ah,EMS_FREEPAGES - mov dx,[EMSHandle] - int EMS_INT - or ah,ah - jz ok - mov errorflag,1 -#ifdef __BORLANDC__ - } -#endif - ok: -#ifdef __WATCOMC__ - } -#endif - if(errorflag==true) - Quit (gvar, "MML_ShutdownEMS: Error freeing EMS!\n"); //++++ add something -} - -/* -==================== -= -= MM_MapEMS -= -= Maps the 64k of EMS used by memory manager into the page frame -= for general use. This only needs to be called if you are keeping -= other things in EMS. -= -==================== -*/ - -byte MM_MapEMS(global_game_variables_t *gvar) -{ - byte str[160]; - unsigned EMSHandle; - byte err; - boolean errorflag=false; - int i; - EMSHandle=gvar->mm.EMSHandle; - - for (i=0;i<4/*MAPPAGES*/;i++) - { - __asm { - mov ah,EMS_MAPPAGE - mov bx,[i] // logical page - mov al,bl // physical page - mov dx,[EMSHandle] // handle - int EMS_INT - or ah,ah - jnz error - jmp End -#ifdef __BORLANDC__ - } -#endif - error: -#ifdef __BORLANDC__ - __asm { -#endif - mov err,ah - mov errorflag,1 -#ifdef __BORLANDC__ - } -#endif - End: -#ifdef __WATCOMC__ - } -#endif - if(errorflag==true) - { - strcpy(str,"MM_MapEMS: EMS error "); - MM_EMSerr(str, err); - printf("%s\n",str); - return err; - } - } - gvar->mmi.EMSmem = (i)*0x4000lu; - return 0; -} - -byte MM_MapXEMS(global_game_variables_t *gvar) -{ -//SUB EMS.MapXPages (PhysicalStart, LogicalStart, NumPages, Handle) - - //Maps up to 4 logical EMS pages to physical pages in the page frame, where: - //PhysicalStart = Physical page first logical page is mapped to - //LogicalStart = First logical page to map - //NumPages = Number of pages to map (1 to 4) - //Handle = EMS handle logical pages are allocated to - - /*//Create a buffer containing the page information -// FOR x = 0 TO NumPages - 1 -// MapInfo$ = MapInfo$ + MKI$(LogicalStart + x) + MKI$(PhysicalStart + x) -// NEXT*/ - -// Regs.ax = 0x5000 //Map the pages in the buffer -// Regs.cx = NumPages //to the pageframe -// Regs.dx = Handle -// Regs.ds = VARSEG(MapInfo$) -// Regs.si = SADD(MapInfo$) -// InterruptX 0x67, Regs, Regs -// EMS.Error = (Regs.ax AND 0xFF00&) \ 0x100 //Store the status code - -//END SUB - byte str[160]; - byte err; - word EMSHandle; - boolean errorflag=false; - int i; - EMSHandle=gvar->mm.EMSHandle; - - if(gvar->mm.EMSVer<0x40) - return 5; - - for (i=0;immi.EMSmem = (i)*0x4000lu; - return 0; -} -#endif -//========================================================================== - -/* -====================== -= -= MML_CheckForXMS -= -= Check for XMM driver -= -======================= -*/ - -boolean MML_CheckForXMS(void) -{ - //numUMBs = 0; - boolean errorflag=false; - - __asm { - mov ax,0x4300 - int 0x2f // query status of installed diver - cmp al,0x80 - je good - mov errorflag,1 -#ifdef __BORLANDC__ - } -#endif - good: -#ifdef __WATCOMC__ - } -#endif - if(errorflag==true) return false; - else return true; -} - -#ifndef __16_PM__ -/* -====================== -= -= MML_SetupXMS -= -= Try to allocate all upper memory block -= -======================= -*/ - -void MML_SetupXMS(global_game_variables_t *gvar) -{ - word base,size; - - - __asm { - mov ax,0x4310 - int 0x2f - mov [WORD PTR XMSaddr],bx - mov [WORD PTR XMSaddr+2],es // function pointer to XMS driver - } -getmemory: - __asm { - mov ah,XMS_ALLOCUMB - mov dx,0xffff // try for largest block possible - //mov ax,dx // Set available Kbytes. - call [DWORD PTR XMSaddr] - or ax,ax - jnz gotone - - cmp bl,0xb0 // error: smaller UMB is available - jne done; - - mov ah,XMS_ALLOCUMB - call [DWORD PTR XMSaddr] // DX holds largest available UMB - or ax,ax - jz done // another error... -#ifdef __BORLANDC__ - } -#endif - gotone: -#ifdef __BORLANDC__ - __asm { -#endif - mov [base],bx - mov [size],dx -#ifdef __BORLANDC__ - } -#endif - done: -#ifdef __WATCOMC__ - } -#endif -// printf("base=%u ", base); printf("size=%u\n", size); - MML_UseSpace(base,size, gvar); - gvar->mmi.XMSmem += size*16; - gvar->mm.UMBbase[gvar->mm.numUMBs] = base; - gvar->mm.numUMBs++; - if(gvar->mm.numUMBs < MAXUMBS) - goto getmemory; -} - - -/* -====================== -= -= MML_ShutdownXMS -= -====================== -*/ - -void MML_ShutdownXMS(global_game_variables_t *gvar) -{ - int i; - unsigned base; - - for (i=0;imm.numUMBs;i++) - { - base = gvar->mm.UMBbase[i]; - __asm { - mov ah,XMS_FREEUMB - mov dx,[base] - call [DWORD PTR XMSaddr] - } - } -} -#endif -//========================================================================== - -/* -====================== -= -= MML_UseSpace -= -= Marks a range of paragraphs as usable by the memory manager -= This is used to mark space for the near heap, far heap, ems page frame, -= and upper memory blocks -= -====================== -*/ - -/*void MML_UseSpace(word segstart, dword seglength, global_game_variables_t *gvar) -{ - mmblocktype far *scan,far *last; - word segm=1; - word oldend; - dword segmlen; - dword extra; - - scan = last = gvar->mm.mmhead; - gvar->mm.mmrover = gvar->mm.mmhead; // reset rover to start of memory - -// -// search for the block that contains the range of segments -// - while(scan->start+scan->length < segstart) - { - last = scan; - scan = scan->next; - } - -// -// take the given range out of the block -// - oldend = scan->start + scan->length; - extra = oldend - (segstart+seglength); - - segmlen=extra; - - //++++emsver stuff! - if(segm>1)/// || extra>=0x10000lu) - //if(extra>0xfffflu) - { - scan->blob=segm; - - //MML_UseSpace(segstart, seglength, gvar); - - printf("MML_UseSpace: Segment spans two blocks!\n"); - //} - printf("segm=%u ", segm); - printf("ex=%lu ", extra); - printf("old=%u ", oldend); - printf("start+seglen=%lu\n", segstart+seglength); - printf("segsta=%x ", segstart); - printf("len=%lu ", scan->length); - printf("seglen=%lu ", seglength); - printf("segmlen=%lu\n", segmlen); - } -//++++todo: linked list of segment! - if(segstart == scan->start) - { - last->next = scan->next; // unlink block - FREEBLOCK(scan); - scan = last; - } - else - scan->length = segstart-scan->start; // shorten block - - if(extra > 0) - { - GETNEWBLOCK; - gvar->mm.mmnew->useptr = NULL; - - gvar->mm.mmnew->next = scan->next; - scan->next = gvar->mm.mmnew; - gvar->mm.mmnew->start = segstart+seglength; - gvar->mm.mmnew->length = extra; - gvar->mm.mmnew->attributes = LOCKBIT; - }//else if(segm>0) goto segu; - -}*/ -void MML_UseSpace(word segstart, dword seglength, global_game_variables_t *gvar) -{ - mmblocktype far *scan,far *last; - word oldend; - sdword extra; - //word segm=1; - - scan = last = gvar->mm.mmhead; - gvar->mm.mmrover = gvar->mm.mmhead; // reset rover to start of memory - -// -// search for the block that contains the range of segments -// - while (scan->start+scan->length < segstart) - { - last = scan; - scan = scan->next; - } - -// -// find out how many blocks it spans! -// - /*for(;seglength>=0x10000;seglength-=0xFFFF) - { - //printf(" seglen=%lu\n", segmlen); - segm++; - }*/ - -// -// take the given range out of the block -// - oldend = scan->start + scan->length; - extra = oldend - (segstart+((unsigned)seglength)); - if (extra < 0) - { - printf("========================================\n"); - printf("start=%x ", scan->start); - printf("old=%u ", oldend); - printf("start+seglen=%lu\n", segstart+seglength); - printf("segsta=%x ", segstart); - printf("len=%lu ", scan->length); - printf("seglen=%lu ", seglength); - printf("\n"); - printf("MML_UseSpace: Segment spans two blocks! %d\n", extra); - printf("========================================\n"); - //return; - } - - if (segstart == scan->start) - { - last->next = scan->next; // unlink block - FREEBLOCK(scan); - scan = last; - } - else - scan->length = segstart-scan->start; // shorten block - - if (extra > 0) - { - GETNEWBLOCK; - gvar->mm.mmnew->useptr = NULL; - - gvar->mm.mmnew->next = scan->next; - scan->next = gvar->mm.mmnew; - gvar->mm.mmnew->start = segstart+seglength; - gvar->mm.mmnew->length = extra; - gvar->mm.mmnew->attributes = LOCKBIT; - } - -} - -//========================================================================== - -/* -==================== -= -= MML_ClearBlock -= -= We are out of blocks, so free a purgable block -= -==================== -*/ - -void MML_ClearBlock(global_game_variables_t *gvar) -{ - mmblocktype far *scan;//,far *last; - - scan = gvar->mm.mmhead->next; - - while(scan) - { - if(!(scan->attributes&LOCKBIT) && (scan->attributes&PURGEBITS)) - { - MM_FreePtr(scan->useptr, gvar); - return; - } - scan = scan->next; - } - - printf("MM_ClearBlock: No purgable blocks!\n"); -} - - -//========================================================================== - -/* -=================== -= -= MM_Startup -= -= Grabs all space from turbo with malloc/farmalloc -= Allocates bufferseg misc buffer -= -=================== -*/ - -void MM_Startup(global_game_variables_t *gvar) -{ - int i; - //dword length,seglength; - dword length; word seglength; - void far *start; - word segstart;//,endfree; - - if(gvar->mm.mmstarted) - MM_Shutdown(gvar); - - gvar->mm.mmstarted = true; - gvar->mm.bombonerror = true; - -// -// set up the linked list (everything in the free list; -// - gvar->mm.mmhead = NULL; - gvar->mm.mmfree = &(gvar->mm.mmblocks[0]); - for(i=0;imm.mmblocks[i].next = &(gvar->mm.mmblocks[i+1]); - gvar->mm.mmblocks[i].next = NULL; - -// -// locked block of all memory until we punch out free space -// - GETNEWBLOCK; - gvar->mm.mmhead = gvar->mm.mmnew; // this will allways be the first node - gvar->mm.mmnew->start = 0; - gvar->mm.mmnew->length = 0xffff; - gvar->mm.mmnew->attributes = LOCKBIT; - gvar->mm.mmnew->next = NULL; - gvar->mm.mmrover = gvar->mm.mmhead; - -// -// get all available near conventional memory segments -// -#ifdef __WATCOMC__ - _nheapgrow(); - length=(dword)_memavl();//(dword)GetFreeSize(); - start = (void __near *)(gvar->mm.nearheap = _nmalloc(length)); -#endif -#ifdef __BORLANDC__ - length=coreleft(); - start = (void near *)(gvar->mm.nearheap = malloc(length)); -#endif - length -= 16-(FP_OFF(start)&15); - length -= SAVENEARHEAP; - seglength = length / 16; // now in paragraphs - segstart = FP_SEG(start)+(FP_OFF(start)+15)/16; - MML_UseSpace(segstart,seglength, gvar); - gvar->mmi.nearheap = length; - //printf("start=%Fp segstart=%x seglen=%lu len=%lu\n", start, segstart, seglength, length); - -// -// get all available far conventional memory segments -// - //printf("_FARCORELEFT %lu\n", _FCORELEFT); -#ifdef __WATCOMC__ - _fheapgrow(); - length=_FCORELEFT;//_fcoreleft();//(dword)GetFarFreeSize();//0xffffUL*4UL; -#endif -#ifdef __BORLANDC__ - printf("farcoreleft() %lu\n", farcoreleft()); - printf("(farcoreleft()+32)-_FCORELEFT %d\n", (sword)((farcoreleft()+32)-_FCORELEFT)); - length=farcoreleft();//_fcoreleft();//(dword)GetFarFreeSize();//0xffffUL*4UL; -#endif - start = gvar->mm.farheap = _fmalloc(length); - //start = gvar->mm.farheap = halloc(length, 1); - length -= 16-(FP_OFF(start)&15); - length -= SAVEFARHEAP; - seglength = length / 16; // now in paragraphs - segstart = FP_SEG(start)+(FP_OFF(start)+15)/16; - MML_UseSpace(segstart,seglength, gvar); - gvar->mmi.farheap = length; - //printf("start=%Fp segstart=%x seglen=%lu len=%lu\n", start, segstart, seglength, length); - - gvar->mmi.mainmem = gvar->mmi.nearheap + gvar->mmi.farheap; - -#ifndef __16_PM__ - if(!dbg_debugpm) { -// -// detect EMS and allocate up to 64K at page frame -// - gvar->mmi.EMSmem = 0; -//goto emsskip; //0000 - for(i = 1;i < _argc;i++) - { - if(US_CheckParm(_argv[i],ParmStringsexmm) == 0) - goto emsskip; // param NOEMS - } - if(MML_CheckForEMS()) - { - MML_SetupEMS(gvar); // allocate space - //16_PM: EMS4! AND EMS 3.2 MASSIVE DATA HANDLMENT! - MML_UseSpace(gvar->mm.EMSPageFrame,(MAPPAGES)*0x4000lu, gvar); - //if(gvar->pm.emm.EMSVer<0x40) - MM_MapEMS(gvar); // map in used pages - //else - //MM_MapXEMS(gvar); // map in used pages - } - -// -// detect XMS and get upper memory blocks -// -emsskip: - gvar->mmi.XMSmem = 0; -goto xmsskip;//0000 - for(i = 1;i < _argc;i++) - { - if(US_CheckParm( _argv[i],ParmStringsexmm) == 0) - goto xmsskip; // param NOXMS - } - if(MML_CheckForXMS()) - { - MML_SetupXMS(gvar); // allocate as many UMBs as possible - } - - } -xmsskip: -#endif -// -// allocate the misc buffer -// - gvar->mm.mmrover = gvar->mm.mmhead; // start looking for space after low block - - MM_GetPtr(&(gvar->mm.bufferseg),BUFFERSIZE, gvar); -} - -//========================================================================== - -/* -==================== -= -= MM_Shutdown -= -= Frees all conventional, EMS, and XMS allocated -= -==================== -*/ - -void MM_Shutdown(global_game_variables_t *gvar) -{ - if(!(gvar->mm.mmstarted)) - return; - - _ffree(gvar->mm.farheap);// printf(" far freed\n"); -#ifdef __WATCOMC__ - _nfree(gvar->mm.nearheap);// printf(" near freed\n"); -#endif -#ifdef __BORLANDC__ - free(gvar->mm.nearheap);// printf(" near freed\n"); -#endif -#ifndef __16_PM__ -#ifdef __DEBUG__ - if(!dbg_debugpm) { -#endif - if(MML_CheckForEMS()){ MML_ShutdownEMS(gvar); }//printf(" EMS freed\n"); } - if(MML_CheckForXMS()){ MML_ShutdownXMS(gvar); }//printf(" XMS freed\n"); } -#ifdef __DEBUG__ - } -#endif -#endif -} - -//========================================================================== - -/* -==================== -= -= MM_GetPtr -= -= Allocates an unlocked, unpurgable block -= -==================== -*/ - -void MM_GetPtr (memptr *baseptr, dword size, global_game_variables_t *gvar) -{ - mmblocktype far *scan,far *lastscan,far *endscan,far *purge,far *next; - int search; - unsigned needed,startseg; - - needed = (size+15)/16; // convert size from bytes to paragraphs - - GETNEWBLOCK; // fill in start and next after a spot is found - gvar->mm.mmnew->length = needed; - gvar->mm.mmnew->useptr = baseptr; - //if(gvar->mm.mmnew->useptr==NULL){ -#ifdef __DEBUG_MM__ - printf("MM_GetPtr\n"); - //%04x - printf(" baseptr=%Fp ", baseptr); printf("useptr=%Fp\n", gvar->mm.mmnew->useptr); - printf(" *baseptr=%Fp ", *baseptr); printf("*useptr=%Fp\n", *(gvar->mm.mmnew->useptr)); - printf(" &baseptr=%Fp ", &baseptr); printf("&useptr=%Fp\n", &(gvar->mm.mmnew->useptr)); -#endif - //Quit(gvar, "gvar->mm.mmnew->useptr==NULL"); } - gvar->mm.mmnew->attributes = BASEATTRIBUTES; - -//tryagain: - for (search = 0; search<3; search++) - { - // - // first search: try to allocate right after the rover, then on up - // second search: search from the head pointer up to the rover - // third search: compress memory, then scan from start - if (search == 1 && gvar->mm.mmrover == gvar->mm.mmhead) - search++; - - switch (search) - { - case 0: - lastscan = gvar->mm.mmrover; - scan = gvar->mm.mmrover->next; - endscan = NULL; - break; - case 1: - lastscan = gvar->mm.mmhead; - scan = gvar->mm.mmhead->next; - endscan = gvar->mm.mmrover; - break; - case 2: - MM_SortMem (gvar); - lastscan = gvar->mm.mmhead; - scan = gvar->mm.mmhead->next; - endscan = NULL; - break; - } - - startseg = lastscan->start + lastscan->length; - - while (scan != endscan) - { - if (scan->start - startseg >= needed) - { - // - // got enough space between the end of lastscan and - // the start of scan, so throw out anything in the middle - // and allocate the new block - // - purge = lastscan->next; - lastscan->next = gvar->mm.mmnew; - gvar->mm.mmnew->start = *(unsigned *)baseptr = startseg; - gvar->mm.mmnew->next = scan; - while ( purge != scan) - { // free the purgable block - next = purge->next; - FREEBLOCK(purge); - purge = next; // purge another if not at scan - } - gvar->mm.mmrover = gvar->mm.mmnew; - return; // good allocation! - } - - // - // if this block is purge level zero or locked, skip past it - // - if ( (scan->attributes & LOCKBIT) - || !(scan->attributes & PURGEBITS) ) - { - lastscan = scan; - startseg = lastscan->start + lastscan->length; - } - - - scan=scan->next; // look at next line - } - } - - if (gvar->mm.bombonerror) - { -#ifdef __WATCOMC__ - //heapdump(); -#endif - printf(OUT_OF_MEM_MSG,(size-gvar->mmi.nearheap)); - Quit(gvar, "for stability reasons the program will shut down! wwww\n"); - } - else - gvar->mm.mmerror = true; -} - -//========================================================================== - -/* -==================== -= -= MM_FreePtr -= -= Allocates an unlocked, unpurgable block -= -==================== -*/ - -void MM_FreePtr(memptr *baseptr, global_game_variables_t *gvar) -{ - mmblocktype far *scan,far *last; - - last = gvar->mm.mmhead; - scan = last->next; - - if(baseptr == gvar->mm.mmrover->useptr) // removed the last allocated block - gvar->mm.mmrover = gvar->mm.mmhead; - - while(scan->useptr != baseptr && scan) - { - last = scan; - scan = scan->next; - } - - if(!scan) - { - printf("MM_FreePtr: Block not found!\n"); - return; - } - - last->next = scan->next; - - FREEBLOCK(scan); -} -//========================================================================== - -/* -===================== -= -= MM_SetPurge -= -= Sets the purge level for a block (locked blocks cannot be made purgable) -= -===================== -*/ - - -void MM_SetPurge(memptr *baseptr, int purge, global_game_variables_t *gvar) -{ - mmblocktype far *start; - - start = gvar->mm.mmrover; - - do - { - if(gvar->mm.mmrover->useptr == baseptr) - break; - - gvar->mm.mmrover = gvar->mm.mmrover->next; - - if(!gvar->mm.mmrover) - gvar->mm.mmrover = gvar->mm.mmhead; - else if(gvar->mm.mmrover == start) - { - Quit (gvar, "MM_SetPurge: Block not found!"); - //return; - } - - } while(1); - - gvar->mm.mmrover->attributes &= ~PURGEBITS; - gvar->mm.mmrover->attributes |= purge; -} - -//========================================================================== - -/* -===================== -= -= MM_SetLock -= -= Locks / unlocks the block -= -===================== -*/ - -void MM_SetLock(memptr *baseptr, boolean locked, global_game_variables_t *gvar) -{ - mmblocktype far *start; - - start = gvar->mm.mmrover; - - do - { - if(gvar->mm.mmrover->useptr == baseptr) - break; - - gvar->mm.mmrover = gvar->mm.mmrover->next; - - if(!gvar->mm.mmrover) - gvar->mm.mmrover = gvar->mm.mmhead; - else if(gvar->mm.mmrover == start) - { - Quit (gvar, "MM_SetLock: Block not found!"); - //return; - } - - } while(1); - - gvar->mm.mmrover->attributes &= ~LOCKBIT; - gvar->mm.mmrover->attributes |= locked*LOCKBIT; -} - -//========================================================================== - -/* -===================== -= -= MM_SortMem -= -= Throws out all purgable stuff and compresses movable blocks -= -===================== -*/ - -void MM_SortMem(global_game_variables_t *gvar) -{ - mmblocktype far *scan,far *last,far *next; - unsigned start,length,source,dest;//++++,oldborder; - //++++int playing; - - // - // lock down a currently playing sound - // -/*++++ playing = SD_SoundPlaying (); - if(playing) - { - switch (SoundMode) - { - case sdm_PC: - playing += STARTPCSOUNDS; - break; - case sdm_AdLib: - playing += STARTADLIBSOUNDS; - break; - } - MM_SetLock(&(memptr)audiosegs[playing],true); - } - - - SD_StopSound();*/ -// oldborder = bordercolor; -// VW_ColorBorder (15); - - if(beforesort) - beforesort(); - - scan = gvar->mm.mmhead; - - last = NULL; // shut up compiler warning - - while(scan) - { - if(scan->attributes & LOCKBIT) - { - // - // block is locked, so try to pile later blocks right after it - // - start = scan->start + scan->length; - } - else - { - if(scan->attributes & PURGEBITS) - { - // - // throw out the purgable block - // - next = scan->next; - FREEBLOCK(scan); - //MM_FreeBlock(scan, gvar); - last->next = next; - scan = next; - continue; - } - else - { - // - // push the non purgable block on top of the last moved block - // - if(scan->start != start) - { - length = scan->length; - source = scan->start; - dest = start; - while(length > 0xf00) - { - movedata(source,0,dest,0,0xf00*16); - length -= 0xf00; - source += 0xf00; - dest += 0xf00; - } - movedata(source,0,dest,0,length*16); - - scan->start = start; - *(unsigned *)scan->useptr = start; - } - start = scan->start + scan->length; - } - } - - last = scan; - scan = scan->next; // go to next block - } - - gvar->mm.mmrover = gvar->mm.mmhead; - - if(aftersort) - aftersort(); - -// VW_ColorBorder (oldborder); - -/*++++ if(playing) - MM_SetLock(&(memptr)audiosegs[playing],false);*/ -} - -//========================================================================== - -/* -===================== -= -= MM_ShowMemory -= -===================== -*/ - -void MM_ShowMemory(global_game_variables_t *gvar) -{ - mmblocktype far *scan; - //word temp; - sdword end,owner; - //word chx,chy; - word w; - //dword wwww; - byte scratch[160],scratch0[4096],str[16];//[[[[scratch1[160], - //byte d = '#'; -//[[[[ VW_SetDefaultColors(); -//[[[[ VW_SetLineWidth(40); -//++++mh temp = bufferofs; -//++++mh bufferofs = 0; -//[[[[ VW_SetScreen (0,0); - scan = gvar->mm.mmhead; - end = -1; - - CA_OpenDebug (gvar); - w=0; - while(scan) - { - strcpy(scratch, AARESET); - if(scan->attributes & PURGEBITS) - strcpy(scratch0, AAMAGENTA); // dark purple = purgable - else - strcpy(scratch0, AABLUE); // medium blue = non purgable - if(scan->attributes & LOCKBIT) - strcpy(scratch0, AARED); // red = locked - if(scan->start<=end) - { - printf("\nend==%d\n\n", end); - strcat(scratch, "MM_ShowMemory: Memory block order currupted!\n"); - strcat(scratch, "End's Size: "); - ultoa (end,str,10); - strcat (scratch,str); - strcat(scratch, "\nscan->start's Size: "); - ultoa (scan->start,str,10); - strcat (scratch,str); - write(gvar->handle.debughandle,scratch,strlen(scratch)); - //modexprint(&page, chx, chy, 1, 0, 24, "\nMM_ShowMemory: Memory block order currupted!\n"); - break; - } - end = scan->start+(scan->length)-1; -//++++ chy = scan->start/320; -//++++ chx = scan->start%320; - //modexhlin(page, scan->start, (unsigned)end, chy, color); - //for(chx=scan->start;chx+4>=(word)end;chx+=4) - //{ -//++++ modexClearRegion(page, chx, chy, 4, 4, color); - //} -//++++ VW_Hlin(scan->start,(unsigned)end,0,color); - for(w=(scan->start)/80;w<=end/80;w++) - { - //printf("+ %u %lu\n", w, scan->length); - strcat(scratch0, "+"); - } - //++==++==optional strcat(scratch0, AARESET); strcat(scratch0, AAGREY); strcat(scratch0,"_"); -//++++ VW_Plot(scan->start,0,15); -//++++ modexClearRegion(page, chx, chy, 4, 4, 15); -//++++ VW_Hlin(end+1,scan->next->start,0,0); // black = free - - //wwww=(dword)(scan->next->start)-(dword)scan->start; - //wwww=(dword)scan->start+(dword)(scan->next->start); - if (scan->next && scan->next->start >= end+1) - { - strcat(scratch0, AARESET); - //++==++==optional strcat(scratch0, "\n"); - strcat(scratch0,AAGREEN); - for(w=(end+1)/80;w<=((scan->next->start-scan->start)/80);w++) - //for(w=(wwww)/80;w<=((end+1)/80);w++) - //for(w=(end+1)/80;w<=((wwww)/80);w++) - { - //printf("0 %x %u %lu\n", scan->next->start, w, scan->length); - strcat(scratch0,"0"); - } - //printf("==================\n"); - //printf("w=%u wwww=%lu start=%04x next=%04x end=%lu\n", w/80, wwww/80, scan->start, (scan->next->start), end+1); - //printf("==================\n"); - strcat(scratch0, "\n"); - //getch(); - }/*else {//if(scan->next->start <= scan->start){ - scan->next->start=scan->start+0x1000; - wwww=(dword)(scan->next->start)-(dword)scan->start; - strcat(scratch0, AARESET); - strcat(scratch0, "\n"); - strcat(scratch0,AAGREEN); - for(w=(end+1);w<=(0x1000/80);w++) - { - //printf("0 %x %x %u\n", scan->start, w); - strcat(scratch0,"0"); - } - printf("================\n"); - printf("w=%x start=%x next=%x end=%u %lu\n", w, scan->start, (scan->next->start), end+1, wwww); - printf("================\n"); - getch(); - }*/ - strcat(scratch0, AARESET); - //strcat(scratch0,"\n"); - //for(chx=scan->next->start;chx+4>=(word)end+1;chx+=4) - //{ -// chx+=scan->next->start; -// modexClearRegion(page, chx, chy, 4, 4, 2); - //} - //modexhlin(page, end+1,scan->next->start, chy, 0); -/* y = scan->start/320; - x = scan->start%320; - VW_Hlin(x,x+end,y,color); - VW_Plot(x,y,15);*/ -//++++ VW_Hlin(x+end+1,x+(scan->next->start-scan->start),y,0); // black = free - strcat(scratch,"Seg:"); - ultoa (scan->start,str,16); - strcat (scratch,str); - strcat (scratch,"\tSize:"); - ultoa ((unsigned)scan->length,str,10); - strcat (scratch,str); - strcat (scratch,"\tOwner:0x"); - owner = (unsigned)scan->useptr; - ultoa (owner,str,16); - strcat (scratch,str); - strcat (scratch,"\n"); - write(gvar->handle.debughandle,scratch,strlen(scratch)); - write(gvar->handle.debughandle,scratch0,strlen(scratch0)); -//modexprint(page, chx, chy, 1, 0, 24, &scratch); -//++++chy+=4; -//fprintf(stdout, "%s", scratch); - - scan = scan->next; - } - /*strcpy(scratch1, AARESET); - strcat(scratch1, "========================================\n"); - strcat(scratch1, "near= "); - ultoa (*(gvar->mm.nearheap),str,10); - strcat (scratch1,str); - strcat(scratch1, " far= "); - ultoa (*(gvar->mm.farheap),str,10); - strcat (scratch1,str); - strcat(scratch1, "\n"); - //strcat(scratch1, "&near= %Fp ", &(gvar->mm.nearheap)); - //strcat(scratch1, "&far= %Fp", &(gvar->mm.farheap)); - //strcat(scratch1, "\n"); - strcat(scratch1, "========================================\n"); - write(gvar->handle.debughandle,scratch1,strlen(scratch1));*/ - - - CA_CloseDebug (gvar); - -//++++mh IN_Ack(); -//**** VW_SetLineWidth(64); -//++++mh bufferofs = temp; -} - -//========================================================================== - -/* -===================== -= -= MM_DumpData -= -===================== -*/ - -void MM_DumpData(global_game_variables_t *gvar) -{ - mmblocktype far *scan,far *best; - long lowest,oldlowest; - word owner; - byte lock,purge; - FILE *dumpfile; - - free(gvar->mm.nearheap); -#ifdef __BORLANDC__ - dumpfile = fopen ("mmdump.16b","w"); -#endif -#ifdef __WATCOMC__ - dumpfile = fopen ("mmdump.16w","w"); -#endif - if (!dumpfile){ - printf("MM_DumpData: Couldn't open MMDUMP.16!\n"); - return; - } - - lowest = -1; - do - { - oldlowest = lowest; - lowest = 0xffff; - - scan = gvar->mm.mmhead; - while (scan) - { - owner = (unsigned)scan->useptr; - - if (owner && owner oldlowest) - { - best = scan; - lowest = owner; - } - - scan = scan->next; - } - - if (lowest != 0xffff) - { - if (best->attributes & PURGEBITS) - purge = 'P'; - else - purge = '-'; - if (best->attributes & LOCKBIT) - lock = 'L'; - else - lock = '-'; - fprintf (dumpfile,"0x%p (%c%c) = %u\n" - ,(unsigned)lowest,lock,purge,best->length); - } - - } while (lowest != 0xffff); - - fclose(dumpfile); - printf("MMDUMP.16 created.\n"); -} - -//========================================================================== - - -/* -====================== -= -= MM_UnusedMemory -= -= Returns the total free space without purging -= -====================== -*/ - -dword MM_UnusedMemory(global_game_variables_t *gvar) -{ - dword free; - mmblocktype far *scan; - - free = 0; - scan = gvar->mm.mmhead; - - while(scan->next) - { - free += scan->next->start - (scan->start + scan->length); - scan = scan->next; - } - - return free*16lu; -// return free; -} - -//========================================================================== - - -/* -====================== -= -= MM_TotalFree -= -= Returns the total free space with purging -= -====================== -*/ - -dword MM_TotalFree(global_game_variables_t *gvar) -{ - dword free; - mmblocktype far *scan; - - free = 0; - scan = gvar->mm.mmhead; - - while(scan->next) - { - if((scan->attributes&PURGEBITS) && !(scan->attributes&LOCKBIT)) - free += scan->length; - free += scan->next->start - (scan->start + scan->length); - scan = scan->next; - } - - return free*16lu; -// return free; -} - -//========================================================================== - -/* -===================== -= -= MM_Report -= -===================== -*/ - -void MM_Report_(global_game_variables_t *gvar) -{ - printf("========================================\n"); - printf(" MM_Report_\n"); - printf("========================================\n"); - if(MML_CheckForEMS()) - { - printf(" %cLIMEMS %u\n", 0xC9, gvar->pm.emm.EMSPresent); - printf(" %c%cEMM v%x.%x available\n", 0xC7, 0xC4, gvar->pm.emm.EMSVer>>4,gvar->pm.emm.EMSVer&0x0F); - printf(" %c%ctotalEMSpages: %u ", 0xC7, 0xC4, gvar->pm.emm.totalEMSpages); printf("freeEMSpages: %u\n", gvar->pm.emm.freeEMSpages); - printf(" %c%cEMSPageFrame: %04x\n", 0xC7, 0xC4, gvar->pm.emm.EMSPageFrame); - printf(" %c%cEMSmem: %lu\n", 0xD3, 0xC4, gvar->mmi.EMSmem); - } - if(MML_CheckForXMS()) - { - printf(" %cXMS %u\n", 0xC9, gvar->pm.xmm.XMSPresent); - printf(" %c%cXMS v%x.%x available\n", 0xC7, 0xC4, XMSVer>>8,XMSVer&0x0F); - printf(" %c%cXMSDriver: %Fp\n", 0xC7, 0xC4, XMSDriver); - printf(" %c%cXMSHandle: %04x\n", 0xC7, 0xC4, gvar->pm.xmm.XMSHandle); - printf(" %c%cXMSmem: %lu\n", 0xD3, 0xC4, gvar->mmi.XMSmem); - } - printf(" %cConv. %u\n", 0xC9, gvar->pm.mm.MainPresent); DebugMemory_(gvar, 0); - //printf("mainmem: %lu\n", gvar->mmi.mainmem); - //printf("Total convmem: %lu ", gvar->mmi.mainmem); printf("TotalFree: %lu ", MM_TotalFree(gvar)+gvar->mmi.EMSmem+gvar->mmi.XMSmem+gvar->mmi.XMSmem); printf("TotalUsed: %lu\n", gvar->mmi.mainmem); - //printf(" UnusedMemory: %lu\n", MM_UnusedMemory(gvar)); - printf("nearheap: %lu ", gvar->mmi.nearheap); printf("farheap: %lu\n", gvar->mmi.farheap); -} - -//========================================================================== - -/* -===================== -= -= MM_EMSerr -= -===================== -*/ - -void MM_EMSerr(byte *stri, byte err) -{ - //Returns a text string describing the error code in EMS.Error. - switch(err) - { - case 0x0: - strcat(stri, "successful"); - break; - case 0x80: - strcat(stri, "internal error"); - break; - case 0x81: - strcat(stri, "hardware malfunction"); - break; - case 0x82: - strcat(stri, "busy .. retry later"); - break; - case 0x83: - strcat(stri, "invalid handle"); - break; - case 0x84: - strcat(stri, "undefined function requested by application"); - break; - case 0x85: - strcat(stri, "no more handles available"); - break; - case 0x86: - strcat(stri, "error in save or restore of mapping context"); - break; - case 0x87: - strcat(stri, "insufficient memory pages in system"); - break; - case 0x88: - strcat(stri, "insufficient memory pages available"); - break; - case 0x89: - strcat(stri, "zero pages requested"); - break; - case 0x8A: - strcat(stri, "invalid logical page number encountered"); - break; - case 0x8B: - strcat(stri, "invalid physical page number encountered"); - break; - case 0x8C: - strcat(stri, "page-mapping hardware state save area is full"); - break; - case 0x8D: - strcat(stri, "save of mapping context failed"); - break; - case 0x8E: - strcat(stri, "restore of mapping context failed"); - break; - case 0x8F: - strcat(stri, "undefined subfunction"); - break; - case 0x90: - strcat(stri, "undefined attribute type"); - break; - case 0x91: - strcat(stri, "feature not supported"); - break; - case 0x92: - strcat(stri, "successful, but a portion of the source region has been overwritten"); - break; - case 0x93: - strcat(stri, "length of source or destination region exceeds length of region allocated to either source or destination handle"); - break; - case 0x94: - strcat(stri, "conventional and expanded memory regions overlap"); - break; - case 0x95: - strcat(stri, "offset within logical page exceeds size of logical page"); - break; - case 0x96: - strcat(stri, "region length exceeds 1 MB"); - break; - case 0x97: - strcat(stri, "source and destination EMS regions have same handle and overlap"); - break; - case 0x98: - strcat(stri, "memory source or destination type undefined"); - break; - case 0x9A: - strcat(stri, "specified alternate map register or DMA register set not supported"); - break; - case 0x9B: - strcat(stri, "all alternate map register or DMA register sets currently allocated"); - break; - case 0x9C: - strcat(stri, "alternate map register or DMA register sets not supported"); - break; - case 0x9D: - strcat(stri, "undefined or unallocated alternate map register or DMA register set"); - break; - case 0x9E: - strcat(stri, "dedicated DMA channels not supported"); - break; - case 0x9F: - strcat(stri, "specified dedicated DMA channel not supported"); - break; - case 0xA0: - strcat(stri, "no such handle name"); - break; - case 0xA1: - strcat(stri, "a handle found had no name, or duplicate handle name"); - break; - case 0xA2: - strcat(stri, "attempted to wrap around 1M conventional address space"); - break; - case 0xA3: - strcat(stri, "source array corrupted"); - break; - case 0xA4: - strcat(stri, "operating system denied access"); - break; - default: - strcat(stri, "undefined error"); - } -} - -//========================================================================== - -/* -===================== -= -= MM_BombOnError -= -===================== -*/ - -void MM_BombOnError(boolean bomb, global_game_variables_t *gvar) -{ - gvar->mm.bombonerror = bomb; -} - -/*void MM_GetNewBlock(global_game_variables_t *gvar) -{ - if(!gvar->mm.mmfree) - MML_ClearBlock(gvar); - gvar->mm.mmnew=gvar->mm.mmfree; - gvar->mm.mmfree=gvar->mm.mmfree->next; - if(!(gvar->mm.mmnew=gvar->mm.mmfree)) - { - printf("MM_GETNEWBLOCK: No free blocks!\n"); - return; - } - gvar->mm.mmfree=gvar->mm.mmfree->next; -} - -void MM_FreeBlock(mmblocktype *x, global_game_variables_t *gvar) -{ - x->useptr=NULL; - x->next=gvar->mm.mmfree; - gvar->mm.mmfree=x; -}*/ - -void xms_call(byte v, global_game_variables_t *gvar) -{ - dword XMSDriver = gvar->pm.xmm.XMSDriver; - __asm { - mov ah,[v] - call [DWORD PTR XMSDriver] - } -} - -/*void MM_seguin(void) -{ - __asm { - push ds - mov ax,ds - inc ax - mov ds,ax - } -} - -void MM_segude(void) -{ - __asm { - pop ds - } -}*/ - -/* -pull data from far and put it into ds var -mov ax,es:si -mov x,ax -*/ -/* -ss stack segment -sp top of stack -bp bottem of stack -*/ +/* Project 16 Source Code~ + * Copyright (C) 2012-2022 sparky4 & pngwen & andrius4669 & joncampbell123 & yakui-lover + * + * This file is part of Project 16. + * + * Project 16 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; either version 3 of the License, or + * (at your option) any later version. + * + * Project 16 is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see , or + * write to the Free Software Foundation, Inc., 51 Franklin Street, + * Fifth Floor, Boston, MA 02110-1301 USA. + * + */ + +// NEWMM.C + +/* +============================================================================= + + ID software memory manager + -------------------------- + +Primary coder: John Carmack + +RELIES ON +--------- +Quit (global_game_variables_t *gvar, char *error) function + + +WORK TO DO +---------- +MM_SizePtr to change the size of a given pointer + +Multiple purge levels utilized + +EMS / XMS unmanaged routines + +============================================================================= +*/ +/* + +Open Watcom port by sparky4 + +*/ +#include "src/lib/16_mm.h" +#include "src/lib/16_ca.h" +#include +#pragma hdrstop + +#pragma warn -pro +#pragma warn -use + +/* +============================================================================= + + LOCAL INFO + +============================================================================= +*/ + +#define LOCKBIT 0x80 // if set in attributes, block cannot be moved +#define PURGEBITS 3 // 0-3 level, 0= unpurgable, 3= purge first +#define PURGEMASK 0xfffc +#define BASEATTRIBUTES 0 // unlocked, non purgable + +//#define MAXUMBS 10 + +/*typedef struct mmblockstruct +{ + unsigned start,length; + unsigned attributes; + memptr *useptr; // pointer to the segment start + struct mmblockstruct far *next; +} mmblocktype;*/ + + +//#define GETNEWBLOCK {if(!(mmnew=mmfree))Quit("MM_GETNEWBLOCK: No free blocks!") ;mmfree=mmfree->next;} +// + +#define GETNEWBLOCK {if(!gvar->mm.mmfree)MML_ClearBlock(gvar);gvar->mm.mmnew=gvar->mm.mmfree;gvar->mm.mmfree=gvar->mm.mmfree->next;} + +#define FREEBLOCK(x) {*x->useptr=NULL;x->next=gvar->mm.mmfree;gvar->mm.mmfree=x;} + +/* +============================================================================= + + GLOBAL VARIABLES + +============================================================================= +*/ + +/*mminfotype mminfo; +memptr bufferseg; +boolean mmerror;*/ + +void (* beforesort) (void); +void (* aftersort) (void); + +/* +============================================================================= + + LOCAL VARIABLES + +============================================================================= +*/ + +/*boolean mmstarted; + +void far *farheap; +void *nearheap; + +mmblocktype far mmblocks[MAXBLOCKS] + ,far *mmhead,far *mmfree,far *mmrover,far *mmnew; + +boolean bombonerror;*/ + +//unsigned totalEMSpages,freeEMSpages,EMSpageframe,EMSpagesmapped,EMShandle; + +void (* XMSaddr) (void); // far pointer to XMS driver + +/*unsigned numUMBs,UMBbase[MAXUMBS];*/ + +//========================================================================== + +// +// local prototypes +// + +boolean MML_CheckForEMS (void); +void MML_ShutdownEMS (void); +void MM_MapEMS (void); +boolean MML_CheckForXMS (void); +void MML_ShutdownXMS (void); +//void MML_UseSpace (unsigned segstart, unsigned seglength); +//void MML_ClearBlock (void); + +//========================================================================== +#ifndef __16_PM__ +#if 0 +static char *ParmStringsexmm[] = {"noems","noxms",""}; +#endif +#endif +/* +====================== += += MML_CheckForEMS += += Routine from p36 of Extending DOS += +======================= +*/ + +boolean MML_CheckForEMS(void) +{ + boolean emmcfems = false; + word EMSPageFrame = 0; + byte err=0, str[64]; + static char emmname[] = "EMMXXXX0"; //fix by andrius4669 + __asm { + mov dx,OFFSET emmname //fix by andrius4669 + mov ax,0x3d00 + int EMM_INT // try to open EMMXXXX0 device + jc error + + mov bx,ax + mov ax,0x4400 + + int EMM_INT // get device info + jc error + + and dx,0x80 + jz error + + mov ax,0x4407 + + int EMM_INT // get status + jc error + or al,al + jz error + + mov ah,0x3e + int EMM_INT // close handle + jc error + + // + // pageframe check + // + mov ah,EMS_GETFRAME + int EMS_INT // find the page frame address + or ah,ah + jnz error + mov [EMSPageFrame],bx + + // + // EMS is good + // + mov emmcfems,1 + jmp End +#ifdef __BORLANDC__ + } +#endif + error: +#ifdef __BORLANDC__ + __asm { +#endif + // + // EMS is bad + // + mov err,ah + mov emmcfems,0 +#ifdef __BORLANDC__ + } +#endif + End: +#ifdef __WATCOMC__ + } +#endif + + // + // Pageframe switch to determine if there is one! + // + if(!EMSPageFrame) + { + emmcfems = false; +#if defined(__DEBUG_PM__) || defined(__DEBUG_MM__) + printf("MML_CheckForEMS: EMS error No Pageframe!\nAddress detected to be %04x\n", EMSPageFrame); +#endif + }else if(!emmcfems)// if there is an error and page frame is not 0000 + { + strcpy(str,"MML_CheckForEMS: EMS error "); + MM_EMSerr(str, err); + printf("%s\n",str); + } + + return(emmcfems); +} + +#ifndef __16_PM__ +#if 0 +/* +====================== += += MML_SetupEMS += +======================= +*/ + +byte MML_SetupEMS(global_game_variables_t *gvar) +{ + byte str[160]; + byte err; + boolean errorflag=false; + + unsigned int EMSVer = 0; + //byte EMS_status; + unsigned totalEMSpages,freeEMSpages,EMSPageFrame,EMSpagesmapped,EMSHandle; + totalEMSpages = freeEMSpages = EMSPageFrame = EMSpagesmapped = 0; + + __asm { + mov ah,EMS_STATUS + int EMS_INT // make sure EMS hardware is present + or ah,ah + //mov [EMS_status],ah + jnz error + + mov ah,EMS_VERSION + int EMS_INT + or ah,ah + jnz error + mov [EMSVer],ax // set EMSVer + cmp al,0x32 // only work on ems 3.2 or greater + jb error + + mov ah,EMS_GETFRAME + int EMS_INT // find the page frame address + or ah,ah + jnz error + mov [EMSPageFrame],bx + + mov ah,EMS_GETPAGES + int EMS_INT // find out how much EMS is there + or ah,ah + jnz error + mov [totalEMSpages],dx + mov [freeEMSpages],bx + or bx,bx + jz noEMS // no EMS at all to allocate + //EXPAND DONG!!!! + cmp [EMSVer],0x40 + jb low + cmp bx,[freeEMSpages] + jle getpages + mov bx,[freeEMSpages] + jmp getpages +#ifdef __BORLANDC__ + } +#endif + low: +#ifdef __BORLANDC__ + __asm { +#endif + cmp bx,4 + jle getpages // there is only 1,2,3,or 4 pages + mov bx,4 // we can't use more than 4 pages +#ifdef __BORLANDC__ + } +#endif + getpages: +#ifdef __BORLANDC__ + __asm { +#endif + mov [EMSpagesmapped],bx + mov ah,EMS_ALLOCPAGES // allocate up to 64k of EMS + int EMS_INT + or ah,ah + jnz error + mov [EMSHandle],dx + jmp End +#ifdef __BORLANDC__ + } +#endif + error: +#ifdef __BORLANDC__ + __asm { +#endif + mov err,ah + mov errorflag,1 + jmp End +#ifdef __BORLANDC__ + } +#endif +noEMS: +End: +#ifdef __WATCOMC__ + } +#endif + if(errorflag==true) + { + strcpy(str,"MM_SetupEMS: EMS error "); + MM_EMSerr(str, err); + printf("%s\n",str); + return err; + } + gvar->mm.totalEMSpages=totalEMSpages; + gvar->mm.freeEMSpages=freeEMSpages; + gvar->mm.EMSPageFrame=EMSPageFrame; + gvar->mm.EMSpagesmapped=EMSpagesmapped; + gvar->mm.EMSHandle=EMSHandle; + gvar->mm.EMSVer=EMSVer; + return 0; +} + + +/* +====================== += += MML_ShutdownEMS += +======================= +*/ + +void MML_ShutdownEMS(global_game_variables_t *gvar) +{ + boolean errorflag=false; + unsigned EMSHandle=gvar->mm.EMSHandle; + + if(!EMSHandle) + return; + __asm { + mov ah,EMS_FREEPAGES + mov dx,[EMSHandle] + int EMS_INT + or ah,ah + jz ok + mov errorflag,1 +#ifdef __BORLANDC__ + } +#endif + ok: +#ifdef __WATCOMC__ + } +#endif + if(errorflag==true) + Quit (gvar, "MML_ShutdownEMS: Error freeing EMS!\n"); //++++ add something +} + +/* +==================== += += MM_MapEMS += += Maps the 64k of EMS used by memory manager into the page frame += for general use. This only needs to be called if you are keeping += other things in EMS. += +==================== +*/ + +byte MM_MapEMS(global_game_variables_t *gvar) +{ + byte str[160]; + unsigned EMSHandle; + byte err; + boolean errorflag=false; + int i; + EMSHandle=gvar->mm.EMSHandle; + + for (i=0;i<4/*MAPPAGES*/;i++) + { + __asm { + mov ah,EMS_MAPPAGE + mov bx,[i] // logical page + mov al,bl // physical page + mov dx,[EMSHandle] // handle + int EMS_INT + or ah,ah + jnz error + jmp End +#ifdef __BORLANDC__ + } +#endif + error: +#ifdef __BORLANDC__ + __asm { +#endif + mov err,ah + mov errorflag,1 +#ifdef __BORLANDC__ + } +#endif + End: +#ifdef __WATCOMC__ + } +#endif + if(errorflag==true) + { + strcpy(str,"MM_MapEMS: EMS error "); + MM_EMSerr(str, err); + printf("%s\n",str); + return err; + } + } + gvar->mmi.EMSmem = (i)*0x4000lu; + return 0; +} + +byte MM_MapXEMS(global_game_variables_t *gvar) +{ +//SUB EMS.MapXPages (PhysicalStart, LogicalStart, NumPages, Handle) + + //Maps up to 4 logical EMS pages to physical pages in the page frame, where: + //PhysicalStart = Physical page first logical page is mapped to + //LogicalStart = First logical page to map + //NumPages = Number of pages to map (1 to 4) + //Handle = EMS handle logical pages are allocated to + + /*//Create a buffer containing the page information +// FOR x = 0 TO NumPages - 1 +// MapInfo$ = MapInfo$ + MKI$(LogicalStart + x) + MKI$(PhysicalStart + x) +// NEXT*/ + +// Regs.ax = 0x5000 //Map the pages in the buffer +// Regs.cx = NumPages //to the pageframe +// Regs.dx = Handle +// Regs.ds = VARSEG(MapInfo$) +// Regs.si = SADD(MapInfo$) +// InterruptX 0x67, Regs, Regs +// EMS.Error = (Regs.ax AND 0xFF00&) \ 0x100 //Store the status code + +//END SUB + byte str[160]; + byte err; + word EMSHandle; + boolean errorflag=false; + int i; + EMSHandle=gvar->mm.EMSHandle; + + if(gvar->mm.EMSVer<0x40) + return 5; + + for (i=0;immi.EMSmem = (i)*0x4000lu; + return 0; +} +#endif +#endif +//========================================================================== + +/* +====================== += += MML_CheckForXMS += += Check for XMM driver += +======================= +*/ + +boolean MML_CheckForXMS(void) +{ + //numUMBs = 0; + boolean errorflag=false; + + __asm { + mov ax,0x4300 + int 0x2f // query status of installed diver + cmp al,0x80 + je good + mov errorflag,1 +#ifdef __BORLANDC__ + } +#endif + good: +#ifdef __WATCOMC__ + } +#endif + if(errorflag==true) return false; + else return true; +} + +#ifndef __16_PM__ +#if 0 +/* +====================== += += MML_SetupXMS += += Try to allocate all upper memory block += +======================= +*/ + +void MML_SetupXMS(global_game_variables_t *gvar) +{ + word base,size; + + + __asm { + mov ax,0x4310 + int 0x2f + mov [WORD PTR XMSaddr],bx + mov [WORD PTR XMSaddr+2],es // function pointer to XMS driver + } +getmemory: + __asm { + mov ah,XMS_ALLOCUMB + mov dx,0xffff // try for largest block possible + //mov ax,dx // Set available Kbytes. + call [DWORD PTR XMSaddr] + or ax,ax + jnz gotone + + cmp bl,0xb0 // error: smaller UMB is available + jne done; + + mov ah,XMS_ALLOCUMB + call [DWORD PTR XMSaddr] // DX holds largest available UMB + or ax,ax + jz done // another error... +#ifdef __BORLANDC__ + } +#endif + gotone: +#ifdef __BORLANDC__ + __asm { +#endif + mov [base],bx + mov [size],dx +#ifdef __BORLANDC__ + } +#endif + done: +#ifdef __WATCOMC__ + } +#endif +// printf("base=%u ", base); printf("size=%u\n", size); + MML_UseSpace(base,size, gvar); + gvar->mmi.XMSmem += size*16; + gvar->mm.UMBbase[gvar->mm.numUMBs] = base; + gvar->mm.numUMBs++; + if(gvar->mm.numUMBs < MAXUMBS) + goto getmemory; +} + + +/* +====================== += += MML_ShutdownXMS += +====================== +*/ + +void MML_ShutdownXMS(global_game_variables_t *gvar) +{ + int i; + unsigned base; + + for (i=0;imm.numUMBs;i++) + { + base = gvar->mm.UMBbase[i]; + __asm { + mov ah,XMS_FREEUMB + mov dx,[base] + call [DWORD PTR XMSaddr] + } + } +} +#endif +#endif +//========================================================================== + +/* +====================== += += MML_UseSpace += += Marks a range of paragraphs as usable by the memory manager += This is used to mark space for the near heap, far heap, ems page frame, += and upper memory blocks += +====================== +*/ + +/* + extra = oldend - (segstart+seglength); + + segmlen=extra; + + //++++emsver stuff! + if(segm>1)/// || extra>=0x10000lu) + //if(extra>0xfffflu) + { + scan->blob=segm; + + //MML_UseSpace(segstart, seglength, gvar); + + printf("MML_UseSpace: Segment spans two blocks!\n"); + //} + printf("segm=%u ", segm); + printf("ex=%lu ", extra); + printf("old=%u ", oldend); + printf("start+seglen=%lu\n", segstart+seglength); + printf("segsta=%x ", segstart); + printf("len=%lu ", scan->length); + printf("seglen=%lu ", seglength); + printf("segmlen=%lu\n", segmlen); + } +//++++todo: linked list of segment! +*/ +void MML_UseSpace (unsigned segstart, unsigned seglength, global_game_variables_t *gvar) +{ + mmblocktype far *scan,far *last; + unsigned oldend; + sdword extra; + //word segm=1; + + scan = last = gvar->mm.mmhead; + gvar->mm.mmrover = gvar->mm.mmhead; // reset rover to start of memory + +// +// search for the block that contains the range of segments +// + while (scan->start+scan->length < segstart) + { + last = scan; + scan = scan->next; + } + +// +// find out how many blocks it spans! +// + /*for(;seglength>=0x10000;seglength-=0xFFFF) + { + //printf(" seglen=%lu\n", segmlen); + segm++; + }*/ + +// +// take the given range out of the block +// + oldend = scan->start + scan->length; + extra = oldend - (segstart+seglength); + if (extra < 0) +#ifdef __DEBUG_MM__ + { + printf("========================================\n"); + printf("start=%x ", scan->start); + printf("old=%u ", oldend); + printf("start+seglen=%lu\n", segstart+seglength); + printf("segsta=%x ", segstart); + printf("len=%lu ", scan->length); + printf("seglen=%lu ", seglength); + printf("\n"); + printf("MML_UseSpace: Segment spans two blocks! %d\n", extra); + printf("========================================\n"); + //return; + } +#else + Quit (gvar, "MML_UseSpace: Segment spans two blocks!"); +#endif + + if (segstart == scan->start) + { + last->next = scan->next; // unlink block + FREEBLOCK(scan); + scan = last; + } + else + scan->length = segstart-scan->start; // shorten block + + if (extra > 0) + { + GETNEWBLOCK; + gvar->mm.mmnew->useptr = NULL; + + gvar->mm.mmnew->next = scan->next; + scan->next = gvar->mm.mmnew; + gvar->mm.mmnew->start = segstart+seglength; + gvar->mm.mmnew->length = extra; + gvar->mm.mmnew->attributes = LOCKBIT; + }//else if(segm>0) goto segu; + +} + +//========================================================================== + +/* +==================== += += MML_ClearBlock += += We are out of blocks, so free a purgable block += +==================== +*/ + +void MML_ClearBlock (global_game_variables_t *gvar) +{ + mmblocktype far *scan;//,far *last; + + scan = gvar->mm.mmhead->next; + + while(scan) + { + if(!(scan->attributes&LOCKBIT) && (scan->attributes&PURGEBITS) ) + { + MM_FreePtr (scan->useptr, gvar); + return; + } + scan = scan->next; + } + + Quit (gvar, "MM_ClearBlock: No purgable blocks!\n"); +} + + +//========================================================================== + +/* +=================== += += MM_Reset += +=================== +*/ + +void MM_Reset (global_game_variables_t *gvar) +{ +// //has to be 16 +// if(sizeof(mmblocktype)!=16) +// return; + +#ifdef __BORLANDC__ + strcpy(gvar->handle.datadumpfilename, "mmdump.16b"); +#endif +#ifdef __WATCOMC__ + strcpy(gvar->handle.datadumpfilename, "mmdump.16w"); +#endif + +#ifdef __BORLANDC__ + strcpy(gvar->handle.heapdumpfilename, "heap.16b"); +#endif +#ifdef __WATCOMC__ + strcpy(gvar->handle.heapdumpfilename, "heap.16w"); +#endif +} + + +//========================================================================== + +/* +=================== += += MM_Startup += += Grabs all space from turbo with malloc/farmalloc += Allocates bufferseg misc buffer += +=================== +*/ + +void MM_Startup (global_game_variables_t *gvar) +{ + int i; + unsigned long length; + void far *start; + unsigned segstart,seglength;//,endfree; + + if(gvar->mm.mmstarted) + MM_Shutdown (gvar); + + MM_Reset (gvar); + gvar->mm.mmstarted = true; + gvar->mm.bombonerror = true; +// +// set up the linked list (everything in the free list; +// + gvar->mm.mmhead = NULL; + gvar->mm.mmfree = &(gvar->mm.mmblocks[0]); + for (i=0;imm.mmblocks[i].next = &(gvar->mm.mmblocks[i+1]); + gvar->mm.mmblocks[i].next = NULL; + +// +// locked block of all memory until we punch out free space +// + GETNEWBLOCK; + gvar->mm.mmhead = gvar->mm.mmnew; // this will allways be the first node + gvar->mm.mmnew->start = 0; + gvar->mm.mmnew->length = 0xffff; + gvar->mm.mmnew->attributes = LOCKBIT; + gvar->mm.mmnew->next = NULL; + gvar->mm.mmrover = gvar->mm.mmhead; + + +// +// get all available near conventional memory segments +// + length=(word)coreleft(); + start = (void far *)(gvar->mm.nearheap = _nmalloc(length)); + + length -= 16-(FP_OFF(start)&15); + length -= SAVENEARHEAP; + seglength = length / 16; // now in paragraphs + segstart = FP_SEG(start)+(FP_OFF(start)+15)/16; + MML_UseSpace (segstart,seglength, gvar); + gvar->mmi.nearheap = length; + //0000printf("near: start=%Fp segstart=%x seglen=%lu len=%lu\n", start, segstart, (dword)seglength, length); +// +// get all available far conventional memory segments +// + length=farcoreleft(); + start = gvar->mm.farheap = farmalloc(length); + length -= 16-(FP_OFF(start)&15); + length -= SAVEFARHEAP; + seglength = length / 16; // now in paragraphs + segstart = FP_SEG(start)+(FP_OFF(start)+15)/16; + MML_UseSpace (segstart,seglength, gvar); + gvar->mmi.farheap = length; + gvar->mmi.mainmem = gvar->mmi.nearheap + gvar->mmi.farheap; + //0000printf("far: start=%Fp segstart=%x seglen=%lu len=%lu\n", start, segstart, (dword)seglength, length); +#if !defined(__16_PM__)// && defined(__WATCOMC__) +#if 0 + if(!dbg_debugpm) { +// +// detect EMS and allocate up to 64K at page frame +// + gvar->mmi.EMSmem = 0; +//goto emsskip; //0000 + for(i = 1;i < _argc;i++) + { + if(US_CheckParm(_argv[i],ParmStringsexmm) == 0) + goto emsskip; // param NOEMS + } + if(MML_CheckForEMS()) + { + MML_SetupEMS(gvar); // allocate space + //16_PM: EMS4! AND EMS 3.2 MASSIVE DATA HANDLMENT! + MML_UseSpace(gvar->mm.EMSPageFrame,(MAPPAGES)*0x4000lu, gvar); + //if(gvar->pm.emm.EMSVer<0x40) + MM_MapEMS(gvar); // map in used pages + //else + //MM_MapXEMS(gvar); // map in used pages + } + +// +// detect XMS and get upper memory blocks +// +emsskip: + gvar->mmi.XMSmem = 0; +goto xmsskip;//0000 + for(i = 1;i < _argc;i++) + { + if(US_CheckParm( _argv[i],ParmStringsexmm) == 0) + goto xmsskip; // param NOXMS + } + if(MML_CheckForXMS()) + { + MML_SetupXMS(gvar); // allocate as many UMBs as possible + } + + } +xmsskip: +#endif +#endif +// +// allocate the misc buffer +// + gvar->mm.mmrover = gvar->mm.mmhead; // start looking for space after low block + + MM_GetPtr (&(gvar->mm.bufferseg),BUFFERSIZE, gvar); +} + +//========================================================================== + +/* +==================== += += MM_Shutdown += += Frees all conventional, EMS, and XMS allocated += +==================== +*/ + +void MM_Shutdown (global_game_variables_t *gvar) +{ + if(!(gvar->mm.mmstarted)) + return; + + _ffree(gvar->mm.farheap);// printf(" far freed\n"); + _nfree(gvar->mm.nearheap);// printf(" near freed\n"); +#ifndef __16_PM__ +#if 0 +#ifdef __DEBUG__ + if(!dbg_debugpm) { +#endif + if(MML_CheckForEMS()){ MML_ShutdownEMS(gvar); }//printf(" EMS freed\n"); } + if(MML_CheckForXMS()){ MML_ShutdownXMS(gvar); }//printf(" XMS freed\n"); } +#ifdef __DEBUG__ + } +#endif +#endif +#endif +} + +//========================================================================== + +/* +==================== += += MM_GetPtr += += Allocates an unlocked, unpurgable block += +==================== +*/ + +void MM_GetPtr (memptr *baseptr,dword size, global_game_variables_t *gvar) +{ + mmblocktype far *scan,far *lastscan,far *endscan + ,far *purge,far *next; + int search; + unsigned needed,startseg; + + needed = (size+15)/16; // convert size from bytes to paragraphs + + GETNEWBLOCK; // fill in start and next after a spot is found + gvar->mm.mmnew->length = needed; + gvar->mm.mmnew->useptr = baseptr; + gvar->mm.mmnew->attributes = BASEATTRIBUTES; + //if(gvar->mm.mmnew->useptr==NULL){ +#ifdef __DEBUG_MM__ + if(dbg_debugmm>0){ + printf("===============================================================================\n"); + printf(" MM_GetPtr\n"); + printf("===============================================================================\n"); + //%04x +// printf(" baseptr=%Fp ", baseptr); printf("useptr=%Fp\n", gvar->mm.mmnew->useptr); +// //printf(" *baseptr=%Fp ", *baseptr); printf("*useptr=%Fp\n", *(gvar->mm.mmnew->useptr)); +// printf(" &baseptr=%Fp ", &baseptr); printf("&useptr=%Fp\n", &(gvar->mm.mmnew->useptr)); + + printf(" baseptr=%04x ", baseptr); printf("useptr=%04x\n", gvar->mm.mmnew->useptr); + //printf(" *baseptr=%04x ", *baseptr); printf("*useptr=%04x\n", *(gvar->mm.mmnew->useptr)); + printf(" &baseptr=%04u ", &baseptr); printf("&useptr=%04u\n", &(gvar->mm.mmnew->useptr)); + + printf(" size is %lu\n", size); + } +#endif + //Quit (gvar, "gvar->mm.mmnew->useptr==NULL"); } + +//tryagain: + for (search = 0; search<3; search++) + { + // + // first search: try to allocate right after the rover, then on up + // second search: search from the head pointer up to the rover + // third search: compress memory, then scan from start + if (search == 1 && gvar->mm.mmrover == gvar->mm.mmhead) + search++; + + switch (search) + { + case 0: + lastscan = gvar->mm.mmrover; + scan = gvar->mm.mmrover->next; + endscan = NULL; + break; + case 1: + lastscan = gvar->mm.mmhead; + scan = gvar->mm.mmhead->next; + endscan = gvar->mm.mmrover; + break; + case 2: + MM_SortMem (gvar); + lastscan = gvar->mm.mmhead; + scan = gvar->mm.mmhead->next; + endscan = NULL; + break; + } + + startseg = lastscan->start + lastscan->length; + + while (scan != endscan) + { + if (scan->start - startseg >= needed) + { + // + // got enough space between the end of lastscan and + // the start of scan, so throw out anything in the middle + // and allocate the new block + // + purge = lastscan->next; + lastscan->next = gvar->mm.mmnew; + gvar->mm.mmnew->start = *(unsigned *)baseptr = startseg; + gvar->mm.mmnew->next = scan; + while ( purge != scan) + { // free the purgable block + next = purge->next; + FREEBLOCK(purge); + purge = next; // purge another if not at scan + } + gvar->mm.mmrover = gvar->mm.mmnew; + return; // good allocation! + } + + // + // if this block is purge level zero or locked, skip past it + // + if ( (scan->attributes & LOCKBIT) + || !(scan->attributes & PURGEBITS) ) + { + lastscan = scan; + startseg = lastscan->start + lastscan->length; + } + + + scan=scan->next; // look at next line + } + } + + if (gvar->mm.bombonerror) + { +#ifdef __WATCOMC__ + //heapdump(); +#endif + printf(OUT_OF_MEM_MSG,(size-gvar->mmi.nearheap)); + Quit (gvar, "for stability reasons the program will shut down! wwww\n"); + } + else + gvar->mm.mmerror = true; +} + +//========================================================================== + +/* +==================== += += MM_FreePtr += += Deallocates an unlocked, purgable block += +==================== +*/ + +void MM_FreePtr (memptr *baseptr, global_game_variables_t *gvar) +{ + mmblocktype far *scan,far *last; + + last = gvar->mm.mmhead; + scan = last->next; + + if (baseptr == gvar->mm.mmrover->useptr) // removed the last allocated block + gvar->mm.mmrover = gvar->mm.mmhead; + + while (scan->useptr != baseptr && scan) + { + last = scan; + scan = scan->next; + } + + if (!scan) + Quit (gvar, "MM_FreePtr: Block not found!"); + + last->next = scan->next; + + FREEBLOCK(scan); +} +//========================================================================== + +/* +===================== += += MM_SetPurge += += Sets the purge level for a block (locked blocks cannot be made purgable) += +===================== +*/ + +void MM_SetPurge (memptr *baseptr, int purge, global_game_variables_t *gvar) +{ + mmblocktype far *start; + + start = gvar->mm.mmrover; + + do + { + if (gvar->mm.mmrover->useptr == baseptr) + break; + + gvar->mm.mmrover = gvar->mm.mmrover->next; + + if (!gvar->mm.mmrover) + gvar->mm.mmrover = gvar->mm.mmhead; + else if (gvar->mm.mmrover == start) + Quit (gvar, "MM_SetPurge: Block not found!"); + + } while (1); + + gvar->mm.mmrover->attributes &= ~PURGEBITS; + gvar->mm.mmrover->attributes |= purge; +} + +//========================================================================== + +/* +===================== += += MM_SetLock += += Locks / unlocks the block += +===================== +*/ + +void MM_SetLock (memptr *baseptr, boolean locked, global_game_variables_t *gvar) +{ + mmblocktype far *start; + + start = gvar->mm.mmrover; + + do + { + if (gvar->mm.mmrover->useptr == baseptr) + break; + + gvar->mm.mmrover = gvar->mm.mmrover->next; + + if (!gvar->mm.mmrover) + gvar->mm.mmrover = gvar->mm.mmhead; + else if (gvar->mm.mmrover == start) + Quit (gvar, "MM_SetLock: Block not found!"); + + } while(1); + + gvar->mm.mmrover->attributes &= ~LOCKBIT; + gvar->mm.mmrover->attributes |= locked*LOCKBIT; +} + +//========================================================================== + +/* +===================== += += MM_SortMem += += Throws out all purgable stuff and compresses movable blocks += +===================== +*/ + +void MM_SortMem (global_game_variables_t *gvar) +{ + mmblocktype far *scan,far *last,far *next; + unsigned start,length,source,dest,oldborder; + //++++int playing; + + // + // lock down a currently playing sound + // +/*++++ playing = SD_SoundPlaying (); + if(playing) + { + switch (SoundMode) + { + case sdm_PC: + playing += STARTPCSOUNDS; + break; + case sdm_AdLib: + playing += STARTADLIBSOUNDS; + break; + } + MM_SetLock(MEMPTRCONV audiosegs[playing],true); + } + + + SD_StopSound();*/ + + oldborder = gvar->video.bordercolor; + gvar->video.bordercolor = VL_modexPalOverscan(gvar->video.palette, 4); + + if (beforesort) + beforesort(); + + scan = gvar->mm.mmhead; + + last = NULL; // shut up compiler warning + + while (scan) + { + if (scan->attributes & LOCKBIT) + { + // + // block is locked, so try to pile later blocks right after it + // + start = scan->start + scan->length; + } + else + { + if (scan->attributes & PURGEBITS) + { + // + // throw out the purgable block + // + next = scan->next; + FREEBLOCK(scan); //MM_FreeBlock(scan, gvar); + last->next = next; + scan = next; + continue; + } + else + { + // + // push the non purgable block on top of the last moved block + // + if (scan->start != start) + { + length = scan->length; + source = scan->start; + dest = start; + while (length > 0xf00) + { + movedata(source,0,dest,0,0xf00*16); + length -= 0xf00; + source += 0xf00; + dest += 0xf00; + } + movedata(source,0,dest,0,length*16); + + scan->start = start; + *(unsigned *)scan->useptr = start; + } + start = scan->start + scan->length; + } + } + + last = scan; + scan = scan->next; // go to next block + } + + gvar->mm.mmrover = gvar->mm.mmhead; + + if (aftersort) + aftersort(); + + VL_ColorBorder (oldborder, &gvar->video); + +/*++++ if(playing) + MM_SetLock((memptr *)&audiosegs[playing],false);*/ +} + +//========================================================================== + +#ifdef __BORLANDC__ +extern char global_temp_status_text[512]; +extern char global_temp_status_text2[512]; +#endif +#ifdef __WATCOMC__ +//#define MMSMPANVID +#define MMSMSCANINFO +#endif + +/* +===================== += += MM_ShowMemory += +===================== +*/ + +void MM_ShowMemory (global_game_variables_t *gvar) +{ + mmblocktype far *scan; + unsigned color,temp,x,y ,q,w/*,width*/,sw; + sdword end,owner; + byte scratch[160],scratch0[4096],str[16]; +#ifdef MMSMSCANINFO + mmshowmemoryinfo_t scaninfo[MAXBLOCKS]; + byte scratch1[4]; + unsigned /*xpos,ypos, */oldq,maxq; + boolean done,restarted,mmsmscaninfoxyposinew; + ScanCode scancode; +#endif + + if(!gvar->video.page[0].width) gvar->video.page[0].sw = gvar->video.page[0].width = 320; //to prevent division by 0 +//-- VL_SetLineWidth(40, gvar); + //temp = gvar->video.ofs.bufferofs; + //gvar->video.ofs.bufferofs = gvar->video.ofs.displayofs; + temp = BDOFSCONV gvar->video.BOFS; + gvar->video.BOFS = gvar->video.DOFS; +#ifdef MMSMSCANINFO + oldq = 0; restarted = false; mmsmscaninfoxyposinew = false; +reset: +#endif + scan = gvar->mm.mmhead; + + end = -1; w = 0; q = 0; + + //width = gvar->video.page[0].width; + sw = gvar->video.page[0].sw; + + CA_OpenDebug (gvar); + while (scan) + { +#ifdef MMSMSCANINFO + scaninfo[q].scan = scan; +#endif + strcpy(scratch, AARESET); + if(scan->attributes & PURGEBITS) + { + color = 6; // dark purple = purgable + strcpy(scratch0, AAMAGENTA); // dark purple = purgable + }else{ + color = 2; // medium blue = non purgable + strcpy(scratch0, AABLUE); // medium blue = non purgable + } + if(scan->attributes & LOCKBIT) + { + color = 1; // red = locked + strcpy(scratch0, AARED); // red = locked + } + if (scan->start<=end) + { + printf("\nend==%d\n\n", end); + strcat(scratch, "MM_ShowMemory: Memory block order currupted!\n"); + strcat(scratch, "End's Size: "); ultoa (end,str,10); strcat (scratch,str); + strcat(scratch, "\nscan->start's Size: "); ultoa (scan->start,str,10); strcat (scratch,str); + write(gvar->handle.debughandle,scratch,strlen(scratch)); + Quit (gvar, "MM_ShowMemory: Memory block order currupted!"); + } + end = scan->length-1; + y = gvar->video.page[0].dx+(scan->start/sw); + x = gvar->video.page[0].dy+(scan->start%sw); +#if 0 +//def MMSMSCANINFO + if(restarted){ + y += gvar->video.page[0].dy; + x += gvar->video.page[0].dx; + } +#if 0 + else{ + scaninfo[q].y = y; + scaninfo[q].x = x; + } +#endif +#endif + VW_Hlin(x,x+end,y,color,gvar); + VL_Plot(x,y,5,gvar); +//++==++==optional strcat(scratch0, AARESET); strcat(scratch0, AAGREY); strcat(scratch0,"_"); + for(w=(scan->start)/80;w<=end/80;w++) + { +//printf("+ %u %lu\n", w, scan->length); + strcat(scratch0, "+"); + } + + if (scan->next && scan->next->start > end+1) + { + VW_Hlin(x+end+1,x+(scan->next->start-scan->start),y,3,gvar); // black = free//now green + strcat(scratch0, AARESET); +//++==++==optional strcat(scratch0, "\n"); + strcat(scratch0,AAGREEN); + for(w=(end+1)/80;w<=((scan->next->start-scan->start)/80);w++) + { +//printf("0 %x %u %lu\n", scan->next->start, w, scan->length); + strcat(scratch0,"0"); + } + //printf("==================\n"); + //printf("w=%u start=%04x next=%04x end=%lu\n", w/80, scan->start, (scan->next->start), end+1); + //printf("==================\n"); + strcat(scratch0, "\n"); + } +#if 0 + else {//if(scan->next->start <= scan->start){ + scan->next->start=scan->start+0x1000; + strcat(scratch0, AARESET); + strcat(scratch0, "\n"); + strcat(scratch0,AAGREEN); + for(w=(end+1);w<=(0x1000/80);w++) + { + //printf("0 %x %x %u\n", scan->start, w); + strcat(scratch0,"0"); + } + printf("================\n"); + printf("w=%x start=%x next=%x end=%u\n", w, scan->start, (scan->next->start), end+1); + printf("================\n"); + getch(); + } +#endif + strcat(scratch0, AARESET); + //strcat(scratch0,"\n"); + strcat(scratch,"Block:"); + ultoa (q,str,10); + strcat (scratch,str); + strcat(scratch,"\tSeg:"); + ultoa (scan->start,str,16); + strcat (scratch,str); +// strcat(scratch, AABLACK); strcat(scratch,"\t"); strcat(scratch, AARESET); + strcat (scratch,"\tSize:"); + ultoa ((unsigned)scan->length,str,10); + strcat (scratch,str); +// strcat(scratch, AABLACK); strcat(scratch,"\t"); strcat(scratch, AARESET); + strcat (scratch,"\tOwner:0x"); + owner = (unsigned)scan->useptr; + ultoa (owner,str,16); + strcat (scratch,str); + strcat (scratch,"\n"); + write(gvar->handle.debughandle,scratch,strlen(scratch)); + write(gvar->handle.debughandle,scratch0,strlen(scratch0)); +//0000fprintf(stdout, "\n[%s]", scratch); +//0000fprintf(stdout, "[\n%s\n]", scratch0); +//0000fprintf(stdout, "[%u]\n", q); + + scan = scan->next; + q++; + +//0000if(gvar->video.VL_Started && color!=6) IN_Ack(gvar); + } + + CA_CloseDebug (gvar); + +#ifdef MMSMPANVID + { + int dx,dy,odx,ody; + odx = gvar->video.page[0].dx; + ody = gvar->video.page[0].dy; + dx = dy = 0; + + while (!(scancode = gvar->in.inst->LastScan)){} + while(!gvar->in.inst->Keyboard[sc_Escape] && !gvar->in.inst->Keyboard[sc_Space]) + { + if(gvar->in.inst->Keyboard[sc_UpArrow]) + { + if(dy>0) + dy--; + } + else if(gvar->in.inst->Keyboard[sc_DownArrow]) + { + if(dyvideo.page[0].height-gvar->video.page[0].sh) + dy++; + } + if(gvar->in.inst->Keyboard[sc_LeftArrow]) + { + if(dx>0) + dx--; + } + else if(gvar->in.inst->Keyboard[sc_RightArrow]) + { + if(dxvideo.page[0].width-gvar->video.page[0].sw) + dx++; + } + + modexPanPage(&gvar->video.page[0], dx, dy); + VL_ShowPage(&gvar->video.page[0], 1, 1); + } + + gvar->video.page[0].dx = odx; + gvar->video.page[0].dy = ody; + } +#endif +#ifdef MMSMSCANINFO + if (gvar->video.VL_Started) IN_Ack(gvar); + maxq = q-1; + if(restarted) q = oldq; + else q = 0; + restarted = false; + + while (!(scancode = gvar->in.inst->LastScan)){} +// IN_ClearKey(scancode); +// IN_Ack(gvar); + + for (done = false;!done;) + { + if(scaninfo[q].scan->attributes & PURGEBITS) + { + color = 6; // dark purple = purgable + strcpy(scratch1, AAMAGENTA); // dark purple = purgable + //printf("%s", AAMAGENTA); + }else{ + color = 2; // medium blue = non purgable + strcpy(scratch1, AABLUE); // medium blue = non purgable + //printf("%s", AABLUE); + } + if(scaninfo[q].scan->attributes & LOCKBIT) + { + color = 1; // red = locked + strcpy(scratch1, AARED); // red = locked + //printf("%s", AARED); + } + end = scaninfo[q].scan->length-1; + + gvar->video.print.t=1; + gvar->video.print.tlsw=1; + gvar->video.print.color=color; + gvar->video.print.bgcolor=8; +#define MMSMPRINTMEMINFO VL_print(global_temp_status_text, 0, gvar); gvar->video.print.y+=8; +//modexprint(&(gvar->video.page[0]), xpos, ypos, 1, 1, color, 8, gvar->video.VL_Started, global_temp_status_text); +#ifdef __WATCOMC__ + if(gvar->video.VL_Started) + { + VL_ShowPage(&gvar->video.page[0], 1, 0); + modexClearRegion(&gvar->video.page[0], gvar->video.page[0].dx, gvar->video.page[0].dy, gvar->video.page[0].sw, gvar->video.page[0].sh, 8); + }else +#endif + { + clrscr(); + } + sprintf(global_temp_status_text, "block #%04u", q); MMSMPRINTMEMINFO +// sprintf(global_temp_status_text, "%Fp", scaninfo[q].scan->useptr); MMSMPRINTMEMINFO + sprintf(global_temp_status_text, "start: %04x", (unsigned)scaninfo[q].scan->start); MMSMPRINTMEMINFO + sprintf(global_temp_status_text, "useptr: %04x", (unsigned)scaninfo[q].scan->useptr); MMSMPRINTMEMINFO + sprintf(global_temp_status_text, "size: %05u", (unsigned)scaninfo[q].scan->length); MMSMPRINTMEMINFO + if (scaninfo[q].scan->next && scaninfo[q].scan->next->start > end+1) + { + sprintf(global_temp_status_text, "free: %05u", (unsigned)(scaninfo[q].scan->next->start-scaninfo[q].scan->start)); MMSMPRINTMEMINFO + }else /*ypos*/gvar->video.print.y+=8; + if(gvar->video.VL_Started) + { + y = scaninfo[q].scan->start/sw; + x = scaninfo[q].scan->start%sw; + if(!mmsmscaninfoxyposinew) + { + y = gvar->video.print.y;//ypos; + x = gvar->video.print.x;//xpos; + }else{ + //y = scaninfo[q].y; + //x = scaninfo[q].x; + y += gvar->video.page[0].dy; + x += gvar->video.page[0].dx; + } + VW_Hlin(x,x+end,y,color,gvar); + VL_Plot(x,y,5,gvar); + } + else + { + printf("%s", scratch1); + printf("%s", AAGREY); printf("_"); + for(w=(scaninfo[q].scan->start)/80;w<=end/80;w++) + { + //strcat(scratch1, "+"); + printf("+"); + } + } + + + if (scaninfo[q].scan->next && scaninfo[q].scan->next->start > end+1) if(!gvar->video.VL_Started) + { + //strcat(scratch1, AARESET); + printf("%s", AARESET); + //strcat(scratch1,AAGREEN); + printf("%s", AAGREEN); + for(w=(end+1)/80;w<=((scaninfo[q].scan->next->start-scaninfo[q].scan->start)/80);w++) + { + //strcat(scratch1,"0"); + printf("0"); + } + }else VW_Hlin(x+end+1,x+(scaninfo[q].scan->next->start-scaninfo[q].scan->start),y,3,gvar); // black = free//now green + + + if(gvar->video.VL_Started) + { + //if (scan->next && scan->next->start > end+1) free + /*xpos*/gvar->video.print.x = gvar->video.page[0].dx; + /*ypos*/gvar->video.print.y = gvar->video.page[0].dy; + } + else + { + //printf("%s\n", scratch1); + printf("%s", AARESET); + printf("\n"); + } + + + while (!(scancode = gvar->in.inst->LastScan)){} + + IN_ClearKey(scancode); + switch (scancode) + { + case sc_Enter: + if(!mmsmscaninfoxyposinew) mmsmscaninfoxyposinew = true; + else mmsmscaninfoxyposinew = false; + //mmsmscaninfoxyposinew!=mmsmscaninfoxyposinew; + break; + case sc_LeftArrow: + if(q>0) q--; + else q = maxq; + break; + case sc_RightArrow: + if(q9) q-=10; + else q = maxq; + break; + case sc_DownArrow: + if(qvideo.VL_Started) modexClearRegion(&gvar->video.page[0], gvar->video.page[0].dx, gvar->video.page[0].dy, gvar->video.page[0].sw, gvar->video.page[0].sh, 8); +#endif + goto reset; + + case sc_Escape: + done = true; + break; + } + } +#else + if(gvar->video.VL_Started) IN_Ack(gvar); +#endif + + gvar->video.BOFS = (byte __far *)temp; +} + +//========================================================================== + + +/* +===================== += += MM_DumpData += +===================== +*/ + +void MM_DumpData (global_game_variables_t *gvar) +{ + mmblocktype far *scan,far *best; + long lowest,oldlowest; + unsigned owner; + char lock,purge; + FILE *dumpfile; + + _nfree(gvar->mm.nearheap); + dumpfile = fopen (gvar->handle.datadumpfilename, "w"); + if (!dumpfile) + Quit (gvar, "MM_DumpData: Couldn't open MMDUMP.16!\n"); + + lowest = -1; + do + { + oldlowest = lowest; + lowest = 0xffff; + + scan = gvar->mm.mmhead; + while (scan) + { + owner = (unsigned)scan->useptr; + + if (owner && owner oldlowest) + { + best = scan; + lowest = owner; + } + + scan = scan->next; + } + + if (lowest != 0xffff) + { + if (best->attributes & PURGEBITS) + purge = 'P'; + else + purge = '-'; + if (best->attributes & LOCKBIT) + lock = 'L'; + else + lock = '-'; + fprintf (dumpfile,"0x%p (%c%c) = %u\n" + ,(unsigned)lowest,lock,purge,best->length); + } + + } while (lowest != 0xffff); + + fclose (dumpfile); + + //reset filename +#ifdef __BORLANDC__ + strcpy(gvar->handle.datadumpfilename, "mmdump.16b"); +#endif +#ifdef __WATCOMC__ + strcpy(gvar->handle.datadumpfilename, "mmdump.16w"); +#endif +//00 printf ("MMDUMP.16 created.\n"); +} + +//========================================================================== + + +/* +====================== += += MM_UnusedMemory += += Returns the total free space without purging += +====================== +*/ + +dword MM_UnusedMemory (global_game_variables_t *gvar) +{ + unsigned free; + mmblocktype far *scan; + + free = 0; + scan = gvar->mm.mmhead; + + while(scan->next) + { + free += scan->next->start - (scan->start + scan->length); + scan = scan->next; + } + + return free*16lu; +} + +//========================================================================== + + +/* +====================== += += MM_TotalFree += += Returns the total free space with purging += +====================== +*/ + +dword MM_TotalFree (global_game_variables_t *gvar) +{ + unsigned free; + mmblocktype far *scan; + + free = 0; + scan = gvar->mm.mmhead; + + while(scan->next) + { + if((scan->attributes&PURGEBITS) && !(scan->attributes&LOCKBIT)) + free += scan->length; + free += scan->next->start - (scan->start + scan->length); + scan = scan->next; + } + + return free*16lu; +} + +//========================================================================== + +/* +===================== += += MM_Report += +===================== +*/ + +void MM_Report_ (global_game_variables_t *gvar) +{ + printf("========================================\n"); + printf(" MM_Report_\n"); + printf("========================================\n"); + if(MML_CheckForEMS()) + { + printf(" %cLIMEMS %u\n", 0xC9, gvar->pm.emm.EMSPresent); + printf(" %c%cEMM v%x.%x available\n", 0xC7, 0xC4, gvar->pm.emm.EMSVer>>4,gvar->pm.emm.EMSVer&0x0F); + printf(" %c%ctotalEMSpages: %u ", 0xC7, 0xC4, gvar->pm.emm.totalEMSpages); printf("freeEMSpages: %u\n", gvar->pm.emm.freeEMSpages); + printf(" %c%cEMSPageFrame: %04x\n", 0xC7, 0xC4, gvar->pm.emm.EMSPageFrame); + printf(" %c%cEMSmem: %lu\n", 0xD3, 0xC4, gvar->mmi.EMSmem); + } + if(MML_CheckForXMS()) + { + printf(" %cXMS %u\n", 0xC9, gvar->pm.xmm.XMSPresent); + printf(" %c%cXMS v%x.%x available\n", 0xC7, 0xC4, XMSVer>>8,XMSVer&0x0F); + printf(" %c%cXMSDriver: %Fp\n", 0xC7, 0xC4, XMSDriver); + printf(" %c%cXMSHandle: %04x\n", 0xC7, 0xC4, gvar->pm.xmm.XMSHandle); + printf(" %c%cXMSmem: %lu\n", 0xD3, 0xC4, gvar->mmi.XMSmem); + } + printf(" %cConv. %u\n", 0xC9, gvar->pm.mm.MainPresent); DebugMemory_(gvar, 0); + //printf("mainmem: %lu\n", gvar->mmi.mainmem); + //printf("Total convmem: %lu ", gvar->mmi.mainmem); printf("TotalFree: %lu ", MM_TotalFree(gvar)+gvar->mmi.EMSmem+gvar->mmi.XMSmem+gvar->mmi.XMSmem); printf("TotalUsed: %lu\n", gvar->mmi.mainmem); + //printf(" UnusedMemory: %lu\n", MM_UnusedMemory(gvar)); + printf("nearheap: %lu ", gvar->mmi.nearheap); printf("farheap: %lu\n", gvar->mmi.farheap); +} + +//========================================================================== + +/* +===================== += += MM_EMSerr += +===================== +*/ + +void MM_EMSerr(byte *stri, byte err) +{ + //Returns a text string describing the error code in EMS.Error. + switch(err) + { + case 0x0: + strcat(stri, "successful"); + break; + case 0x80: + strcat(stri, "internal error"); + break; + case 0x81: + strcat(stri, "hardware malfunction"); + break; + case 0x82: + strcat(stri, "busy .. retry later"); + break; + case 0x83: + strcat(stri, "invalid handle"); + break; + case 0x84: + strcat(stri, "undefined function requested by application"); + break; + case 0x85: + strcat(stri, "no more handles available"); + break; + case 0x86: + strcat(stri, "error in save or restore of mapping context"); + break; + case 0x87: + strcat(stri, "insufficient memory pages in system"); + break; + case 0x88: + strcat(stri, "insufficient memory pages available"); + break; + case 0x89: + strcat(stri, "zero pages requested"); + break; + case 0x8A: + strcat(stri, "invalid logical page number encountered"); + break; + case 0x8B: + strcat(stri, "invalid physical page number encountered"); + break; + case 0x8C: + strcat(stri, "page-mapping hardware state save area is full"); + break; + case 0x8D: + strcat(stri, "save of mapping context failed"); + break; + case 0x8E: + strcat(stri, "restore of mapping context failed"); + break; + case 0x8F: + strcat(stri, "undefined subfunction"); + break; + case 0x90: + strcat(stri, "undefined attribute type"); + break; + case 0x91: + strcat(stri, "feature not supported"); + break; + case 0x92: + strcat(stri, "successful, but a portion of the source region has been overwritten"); + break; + case 0x93: + strcat(stri, "length of source or destination region exceeds length of region allocated to either source or destination handle"); + break; + case 0x94: + strcat(stri, "conventional and expanded memory regions overlap"); + break; + case 0x95: + strcat(stri, "offset within logical page exceeds size of logical page"); + break; + case 0x96: + strcat(stri, "region length exceeds 1 MB"); + break; + case 0x97: + strcat(stri, "source and destination EMS regions have same handle and overlap"); + break; + case 0x98: + strcat(stri, "memory source or destination type undefined"); + break; + case 0x9A: + strcat(stri, "specified alternate map register or DMA register set not supported"); + break; + case 0x9B: + strcat(stri, "all alternate map register or DMA register sets currently allocated"); + break; + case 0x9C: + strcat(stri, "alternate map register or DMA register sets not supported"); + break; + case 0x9D: + strcat(stri, "undefined or unallocated alternate map register or DMA register set"); + break; + case 0x9E: + strcat(stri, "dedicated DMA channels not supported"); + break; + case 0x9F: + strcat(stri, "specified dedicated DMA channel not supported"); + break; + case 0xA0: + strcat(stri, "no such handle name"); + break; + case 0xA1: + strcat(stri, "a handle found had no name, or duplicate handle name"); + break; + case 0xA2: + strcat(stri, "attempted to wrap around 1M conventional address space"); + break; + case 0xA3: + strcat(stri, "source array corrupted"); + break; + case 0xA4: + strcat(stri, "operating system denied access"); + break; + default: + strcat(stri, "undefined error"); + } +} + +//========================================================================== + +/* +===================== += += MM_BombOnError += +===================== +*/ + +void MM_BombOnError (boolean bomb, global_game_variables_t *gvar) +{ + gvar->mm.bombonerror = bomb; +} + +#if 0 +void MM_GetNewBlock(global_game_variables_t *gvar) +{ + if(!gvar->mm.mmfree) + MML_ClearBlock(gvar); + gvar->mm.mmnew=gvar->mm.mmfree; + gvar->mm.mmfree=gvar->mm.mmfree->next; + if(!(gvar->mm.mmnew=gvar->mm.mmfree)) + { + printf("MM_GETNEWBLOCK: No free blocks!\n"); + return; + } + gvar->mm.mmfree=gvar->mm.mmfree->next; +} + +void MM_FreeBlock(mmblocktype *x, global_game_variables_t *gvar) +{ + x->useptr=NULL; + x->next=gvar->mm.mmfree; + gvar->mm.mmfree=x; +} +#endif + +void xms_call(byte v, global_game_variables_t *gvar) +{ + dword XMSDriver = gvar->pm.xmm.XMSDriver; + __asm { + mov ah,[v] + call [DWORD PTR XMSDriver] + } +} + +/*void MM_seguin(void) +{ + __asm { + push ds + mov ax,ds + inc ax + mov ds,ax + } +} + +void MM_segude(void) +{ + __asm { + pop ds + } +}*/ + +/* +pull data from far and put it into ds var +mov ax,es:si +mov x,ax +*/ +/* +ss stack segment +sp top of stack +bp bottem of stack +*/