1 /* Catacomb Apocalypse Source Code
2 * Copyright (C) 1993-2014 Flat Rock Software
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
27 #include "src/lib/16_head.h"
28 //++++mh #include "src/lib/16_in.h"
30 #ifdef __DEBUG__ // 1 == Debug/Dev ; 0 == Production/final
31 #define OUT_OF_MEM_MSG "MM_GetPtr: Out of memory!\nYou were short :%ld bytes"
33 #define OUT_OF_MEM_MSG "\npee\n"
37 #define SAVENEARHEAP 0x200 // space to leave in data segment
38 #define SAVEFARHEAP 0 // space to leave in far heap
40 #define BUFFERSIZE 0x1000 // miscelanious, allways available buffer
49 #define EMS_STATUS 0x40
50 #define EMS_GETFRAME 0x41
51 #define EMS_GETPAGES 0x42
52 #define EMS_ALLOCPAGES 0x43
53 #define EMS_MAPPAGE 0x44
54 #define EMS_FREEPAGES 0x45
55 #define EMS_VERSION 0x46
59 #define XMS_VERSION 0x00
61 #define XMS_ALLOCHMA 0x01
62 #define XMS_FREEHMA 0x02
64 #define XMS_GENABLEA20 0x03
65 #define XMS_GDISABLEA20 0x04
66 #define XMS_LENABLEA20 0x05
67 #define XMS_LDISABLEA20 0x06
68 #define XMS_QUERYA20 0x07
70 #define XMS_QUERYREE 0x08
71 #define XMS_ALLOC 0x09
75 #define XMS_UNLOCK 0x0D
76 #define XMS_GETINFO 0x0E
77 #define XMS_RESIZE 0x0F
79 #define XMS_ALLOCUMB 0x10
80 #define XMS_FREEUMB 0x11
82 //==========================================================================
83 //I hope this is correct!
85 typedef void __based(__self) * memptr; //__based(seg) * memptr;
89 dword nearheap,farheap,EMSmem,XMSmem,mainmem;
92 //==========================================================================
94 extern void (* beforesort) (void);
95 extern void (* aftersort) (void);
96 extern void (* XMSaddr) (void); // far pointer to XMS driver
98 //==========================================================================
101 =============================================================================
105 =============================================================================
108 #define LOCKBIT 0x80 // if set in attributes, block cannot be moved
109 #define PURGEBITS 3 // 0-3 level, 0= unpurgable, 3= purge first
110 #define PURGEMASK 0xfffc
111 #define BASEATTRIBUTES 0 // unlocked, non purgable
115 typedef struct mmblockstruct
118 //dword start,length;
121 word segm; //how many 64kb segment blocks it takes up if there is many data!
122 dword segmlen; //length of the multi segment data
124 memptr *useptr; // pointer to the segment start
125 struct mmblockstruct huge *next;
132 boolean mmstarted, bombonerror, mmerror;
135 unsigned totalEMSpages,freeEMSpages,EMSpageframe,EMSpagesmapped,EMShandle;
137 word numUMBs,UMBbase[MAXUMBS];
138 //dword numUMBs,UMBbase[MAXUMBS];
139 mmblocktype huge mmblocks[MAXBLOCKS],huge *mmhead,huge *mmfree,huge *mmrover,huge *mmnew;
143 =============================================================================
147 =============================================================================
152 =============================================================================
156 =============================================================================
159 //==========================================================================
161 boolean MML_CheckForEMS(void);
162 unsigned MML_SetupEMS(mminfo_t *mm);
163 void MML_ShutdownEMS(mminfo_t *mm);
164 unsigned MM_MapEMS(mminfo_t *mm);
165 boolean MML_CheckForXMS(mminfo_t *mm);
166 void MML_SetupXMS(mminfo_t *mm, mminfotype *mmi);
167 void MML_ShutdownXMS(mminfo_t *mm);
168 void MML_UseSpace(/*d*/word segstart, dword seglength, mminfo_t *mm);
169 void MML_ClearBlock(mminfo_t *mm);
171 void MM_Startup(mminfo_t *mm, mminfotype *mmi);
172 void MM_Shutdown(mminfo_t *mm);
174 void MM_GetPtr(memptr *baseptr,dword size, mminfo_t *mm, mminfotype *mmi);
175 void MM_FreePtr(memptr *baseptr, mminfo_t *mm);
176 void MM_SetPurge(memptr *baseptr, int purge, mminfo_t *mm);
177 void MM_SetLock(memptr *baseptr, boolean locked, mminfo_t *mm);
178 void MM_SortMem(mminfo_t *mm);
179 void MM_ShowMemory(mminfo_t *mm);
180 dword MM_UnusedMemory(mminfo_t *mm);
181 dword MM_TotalFree(mminfo_t *mm);
182 void MM_Report(mminfo_t *mm, mminfotype *mmi);
183 //int MM_EMSVer(void);
184 void MM_BombOnError(boolean bomb, mminfo_t *mm);
185 void MM_GetNewBlock(mminfo_t *mm);
186 void MM_FreeBlock(mmblocktype *x, mminfo_t *mm);
188 //==========================================================================