X-Git-Url: http://4ch.mooo.com/gitweb/?a=blobdiff_plain;f=src%2Flib%2F16_mm.c;h=4aa8b746d54932754e491008d28462c2bb6d96b7;hb=b9ead1ce7256ab14e50efca36ba32b9d9bf65c1a;hp=b6d2a26743327cbd250e565f91fbe225b9f33fa5;hpb=adb425e17c32e33e71670dd69c909717f1d65acb;p=16.git
diff --git a/src/lib/16_mm.c b/src/lib/16_mm.c
index b6d2a267..4aa8b746 100755
--- a/src/lib/16_mm.c
+++ b/src/lib/16_mm.c
@@ -1,19 +1,23 @@
-/* Catacomb Apocalypse Source Code
- * Copyright (C) 1993-2014 Flat Rock Software
+/* Project 16 Source Code~
+ * Copyright (C) 2012-2017 sparky4 & pngwen & andrius4669 & joncampbell123 & yakui-lover
*
- * This program is free software; you can redistribute it and/or modify
+ * 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 2 of the License, or
+ * the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
- * This program is distributed in the hope that it will be useful,
+ * 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, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ * 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
@@ -54,6 +58,37 @@ Open Watcom port by sparky4
#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;}
+
/*
=============================================================================
@@ -62,9 +97,12 @@ Open Watcom port by sparky4
=============================================================================
*/
+/*mminfotype mminfo;
+memptr bufferseg;
+boolean mmerror;*/
+
void (* beforesort) (void);
void (* aftersort) (void);
-void (* XMSaddr) (void); // far pointer to XMS driver
/*
=============================================================================
@@ -73,6 +111,38 @@ void (* XMSaddr) (void); // far pointer to XMS driver
=============================================================================
*/
+
+/*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",""};
@@ -624,10 +694,10 @@ void MML_ShutdownXMS(global_game_variables_t *gvar)
}
//++++todo: linked list of segment!
*/
-void MML_UseSpace(word segstart, dword seglength, global_game_variables_t *gvar)
+void MML_UseSpace (unsigned segstart, unsigned seglength, global_game_variables_t *gvar)
{
mmblocktype far *scan,far *last;
- word oldend;
+ unsigned oldend;
sdword extra;
//word segm=1;
@@ -656,8 +726,9 @@ void MML_UseSpace(word segstart, dword seglength, global_game_variables_t *gvar)
// take the given range out of the block
//
oldend = scan->start + scan->length;
- extra = oldend - (segstart+((unsigned)seglength));
+ extra = oldend - (segstart+seglength);
if (extra < 0)
+#ifdef __DEBUG_MM__
{
printf("========================================\n");
printf("start=%x ", scan->start);
@@ -671,6 +742,9 @@ void MML_UseSpace(word segstart, dword seglength, global_game_variables_t *gvar)
printf("========================================\n");
//return;
}
+#else
+ Quit (gvar, "MML_UseSpace: Segment spans two blocks!");
+#endif
if (segstart == scan->start)
{
@@ -707,7 +781,7 @@ void MML_UseSpace(word segstart, dword seglength, global_game_variables_t *gvar)
====================
*/
-void MML_ClearBlock(global_game_variables_t *gvar)
+void MML_ClearBlock (global_game_variables_t *gvar)
{
mmblocktype far *scan;//,far *last;
@@ -723,7 +797,7 @@ void MML_ClearBlock(global_game_variables_t *gvar)
scan = scan->next;
}
- printf("MM_ClearBlock: No purgable blocks!\n");
+ Quit (gvar, "MM_ClearBlock: No purgable blocks!\n");
}
@@ -740,26 +814,24 @@ void MML_ClearBlock(global_game_variables_t *gvar)
===================
*/
-void MM_Startup(global_game_variables_t *gvar)
+void MM_Startup (global_game_variables_t *gvar)
{
int i;
- //dword length,seglength;
- dword length; word seglength;
+ dword length;
void far *start;
- word segstart;//,endfree;
+ unsigned segstart,seglength;//,endfree;
if(gvar->mm.mmstarted)
- MM_Shutdown(gvar);
+ 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;
@@ -774,6 +846,7 @@ void MM_Startup(global_game_variables_t *gvar)
gvar->mm.mmnew->next = NULL;
gvar->mm.mmrover = gvar->mm.mmhead;
+
//
// get all available near conventional memory segments
//
@@ -793,7 +866,7 @@ void MM_Startup(global_game_variables_t *gvar)
length -= SAVENEARHEAP;
seglength = length / 16; // now in paragraphs
segstart = FP_SEG(start)+(FP_OFF(start)+15)/16;
- MML_UseSpace(segstart,seglength, gvar);
+ 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);
@@ -814,7 +887,7 @@ void MM_Startup(global_game_variables_t *gvar)
length -= SAVEFARHEAP;
seglength = length / 16; // now in paragraphs
segstart = FP_SEG(start)+(FP_OFF(start)+15)/16;
- MML_UseSpace(segstart,seglength, gvar);
+ MML_UseSpace (segstart,seglength, gvar);
gvar->mmi.farheap = length;
//0000printf("far: start=%Fp segstart=%x seglen=%lu len=%lu\n", start, segstart, (dword)seglength, length);
@@ -869,7 +942,7 @@ xmsskip:
//
gvar->mm.mmrover = gvar->mm.mmhead; // start looking for space after low block
- MM_GetPtr(&(gvar->mm.bufferseg),BUFFERSIZE, gvar);
+ MM_GetPtr (&(gvar->mm.bufferseg),BUFFERSIZE, gvar);
}
//==========================================================================
@@ -884,7 +957,7 @@ xmsskip:
====================
*/
-void MM_Shutdown(global_game_variables_t *gvar)
+void MM_Shutdown (global_game_variables_t *gvar)
{
if(!(gvar->mm.mmstarted))
return;
@@ -922,10 +995,10 @@ void MM_Shutdown(global_game_variables_t *gvar)
====================
*/
-void MM_GetPtr (memptr *baseptr, dword size, global_game_variables_t *gvar)
+void MM_GetPtr (memptr *baseptr,dword size, global_game_variables_t *gvar)
{
mmblocktype far *scan,far *lastscan,far *endscan
- ,far *purge,far *next;
+ ,far *purge,far *next;
int search;
unsigned needed,startseg;
@@ -934,6 +1007,7 @@ void MM_GetPtr (memptr *baseptr, dword size, global_game_variables_t *gvar)
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__
printf("MM_GetPtr\n");
@@ -945,8 +1019,7 @@ void MM_GetPtr (memptr *baseptr, dword size, global_game_variables_t *gvar)
}
printf(" size is %lu\n", size);
#endif
- //Quit(gvar, "gvar->mm.mmnew->useptr==NULL"); }
- gvar->mm.mmnew->attributes = BASEATTRIBUTES;
+ //Quit (gvar, "gvar->mm.mmnew->useptr==NULL"); }
//tryagain:
for (search = 0; search<3; search++)
@@ -1024,7 +1097,7 @@ void MM_GetPtr (memptr *baseptr, dword size, global_game_variables_t *gvar)
//heapdump();
#endif
printf(OUT_OF_MEM_MSG,(size-gvar->mmi.nearheap));
- Quit(gvar, "for stability reasons the program will shut down! wwww\n");
+ Quit (gvar, "for stability reasons the program will shut down! wwww\n");
}
else
gvar->mm.mmerror = true;
@@ -1052,13 +1125,13 @@ void MM_FreePtr (memptr *baseptr, global_game_variables_t *gvar)
if (baseptr == gvar->mm.mmrover->useptr) // removed the last allocated block
gvar->mm.mmrover = gvar->mm.mmhead;
- while(scan->useptr != baseptr && scan)
+ while (scan->useptr != baseptr && scan)
{
last = scan;
scan = scan->next;
}
- if(!scan)
+ if (!scan)
Quit (gvar, "MM_FreePtr: Block not found!");
last->next = scan->next;
@@ -1095,7 +1168,7 @@ void MM_SetPurge (memptr *baseptr, int purge, global_game_variables_t *gvar)
else if (gvar->mm.mmrover == start)
Quit (gvar, "MM_SetPurge: Block not found!");
- } while(1);
+ } while (1);
gvar->mm.mmrover->attributes &= ~PURGEBITS;
gvar->mm.mmrover->attributes |= purge;
@@ -1170,7 +1243,7 @@ void MM_SortMem (global_game_variables_t *gvar)
playing += STARTADLIBSOUNDS;
break;
}
- MM_SetLock((memptr *)&audiosegs[playing],true);
+ MM_SetLock(MEMPTRCONV audiosegs[playing],true);
}
@@ -1178,16 +1251,16 @@ void MM_SortMem (global_game_variables_t *gvar)
oldborder = gvar->video.bordercolor;
gvar->video.bordercolor = modexPalOverscan(15);
- if(beforesort)
+ if (beforesort)
beforesort();
scan = gvar->mm.mmhead;
last = NULL; // shut up compiler warning
- while(scan)
+ while (scan)
{
- if(scan->attributes & LOCKBIT)
+ if (scan->attributes & LOCKBIT)
{
//
// block is locked, so try to pile later blocks right after it
@@ -1196,7 +1269,7 @@ void MM_SortMem (global_game_variables_t *gvar)
}
else
{
- if(scan->attributes & PURGEBITS)
+ if (scan->attributes & PURGEBITS)
{
//
// throw out the purgable block
@@ -1212,12 +1285,12 @@ void MM_SortMem (global_game_variables_t *gvar)
//
// push the non purgable block on top of the last moved block
//
- if(scan->start != start)
+ if (scan->start != start)
{
length = scan->length;
source = scan->start;
dest = start;
- while(length > 0xf00)
+ while (length > 0xf00)
{
movedata(source,0,dest,0,0xf00*16);
length -= 0xf00;
@@ -1239,7 +1312,7 @@ void MM_SortMem (global_game_variables_t *gvar)
gvar->mm.mmrover = gvar->mm.mmhead;
- if(aftersort)
+ if (aftersort)
aftersort();
VL_ColorBorder (oldborder, &gvar->video);