+/* Project 16 Source Code~\r
+ * Copyright (C) 2012-2016 sparky4 & pngwen & andrius4669 & joncampbell123 & yakui-lover\r
+ *\r
+ * This file is part of Project 16.\r
+ *\r
+ * Project 16 is free software; you can redistribute it and/or modify\r
+ * it under the terms of the GNU General Public License as published by\r
+ * the Free Software Foundation; either version 3 of the License, or\r
+ * (at your option) any later version.\r
+ *\r
+ * Project 16 is distributed in the hope that it will be useful,\r
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of\r
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\r
+ * GNU General Public License for more details.\r
+ *\r
+ * You should have received a copy of the GNU General Public License\r
+ * along with this program. If not, see <http://www.gnu.org/licenses/>, or\r
+ * write to the Free Software Foundation, Inc., 51 Franklin Street,\r
+ * Fifth Floor, Boston, MA 02110-1301 USA.\r
+ *\r
+ */\r
+\r
//\r
// ID_PM.C\r
// Id Engine's Page Manager v1.0\r
\r
#include "src/lib/16_pm.h"\r
#pragma hdrstop\r
+union REGS CPURegs;\r
/*\r
// Main Mem specific variables\r
boolean MainPresent;\r
memptr MainMemPages[PMMaxMainMem];\r
- PMBlockAttr MainMemUsed[PMMaxMainMem];\r
- int MainPagesAvail;\r
+ PMBlockAttr gvar->pm.mm.MainMemUsed[PMMaxMainMem];\r
+ int gvar->pm.mm.MainPagesAvail;\r
\r
// EMS specific variables\r
boolean gvar->pm.emm.EMSPresent;\r
word gvar->pm.emm.EMSAvail,gvar->pm.emm.EMSPagesAvail,gvar->pm.emm.EMSHandle,\r
gvar->pm.emm.EMSPageFrame,gvar->pm.emm.EMSPhysicalPage;\r
- EMSListStruct EMSList[EMSFrameCount];\r
+ gvar->pm.emm.EMSListStruct gvar->pm.emm.EMSList[EMSFrameCount];\r
\r
// XMS specific variables\r
boolean gvar->pm.xmm.XMSPresent;\r
int gvar->pm.xmm.XMSProtectPage = -1;\r
\r
// File specific variables\r
- char PageFileName[13] = {"VSWAP."};\r
+ char gvar->pm.fi.PageFileName[13] = {"VSWAP."};\r
int PageFile = -1;\r
word gvar->pm.fi.ChunksInFile;\r
word PMSpriteStart,PMSoundStart;\r
\r
// General usage variables\r
boolean PMStarted,\r
- PMPanicMode,\r
- PMThrashing;\r
- word gvar->pm.xmm.XMSPagesUsed,\r
- gvar->pm.emm.EMSPagesUsed,\r
+ gvar->pm.PMPanicMode,\r
+ gvar->pm.PMThrashing;\r
+ word gvar->pm.XMSPagesUsed,\r
+ gvar->pm.EMSPagesUsed,\r
MainPagesUsed,\r
- PMNumBlocks;\r
+ gvar->pm.PMNumBlocks;\r
long PMFrameCount;\r
- PageListStruct far *PMPages,\r
- _seg *PMSegPages;\r
+ PageListStruct far *gvar->pm.PMPages,\r
+ _seg *gvar->pm.PMSegPages;\r
*/\r
static char *ParmStrings[] = {"nomain","noems","noxms",nil};\r
\r
CPURegs.x.bx = logical;\r
CPURegs.x.dx = gvar->pm.emm.EMSHandle;\r
CPURegs.h.ah = EMS_MAPPAGE;\r
- __asm\r
- {\r
+ __asm {\r
int EMS_INT\r
}\r
\r
mov [WORD PTR XMSDriver+2],es // function pointer to XMS driver\r
}\r
\r
- XMS_CALL(XMS_QUERYFREE); // Find out how much XMS is available\r
+ XMS_CALL(XMS_QUERYFREE, gvar); // Find out how much XMS is available\r
gvar->pm.xmm.XMSAvail = CPURegs.x.ax;\r
if (!CPURegs.x.ax) // AJR: bugfix 10/8/92\r
goto error;\r
goto error;\r
\r
CPURegs.x.dx = gvar->pm.xmm.XMSAvail;\r
- XMS_CALL(XMS_ALLOC); // And do the allocation\r
+ XMS_CALL(XMS_ALLOC, gvar); // And do the allocation\r
gvar->pm.xmm.XMSHandle = CPURegs.x.dx;\r
\r
if (!CPURegs.x.ax) // AJR: bugfix 10/8/92\r
push si\r
}\r
CPURegs.x.si = (word)©\r
- XMS_CALL(XMS_MOVE);\r
+ XMS_CALL(XMS_MOVE, gvar);\r
__asm {\r
pop si\r
}\r
}\r
\r
#if 1\r
-#define PML_CopyToXMS(s,t,l) PML_XMSCopy(true,(s),(t),(l))\r
-#define PML_CopyFromXMS(t,s,l) PML_XMSCopy(false,(t),(s),(l))\r
+#define PML_CopyToXMS(s,t,l,gvar) PML_XMSCopy(true,(s),(t),(l),(gvar))\r
+#define PML_CopyFromXMS(t,s,l,gvar) PML_XMSCopy(false,(t),(s),(l),(gvar))\r
#else\r
//\r
// PML_CopyToXMS() - Copies the specified number of bytes from the real mode\r
// segment address to the specified XMS page\r
//\r
void\r
-PML_CopyToXMS(byte far *source,int targetpage,word length)\r
+PML_CopyToXMS(byte far *source,int targetpage,word length,global_game_variables_t *gvar)\r
{\r
- PML_XMSCopy(true,source,targetpage,length);\r
+ PML_XMSCopy(true,source,targetpage,length, global_game_variables_t *gvar);\r
}\r
\r
//\r
// page to the specified real mode address\r
//\r
void\r
-PML_CopyFromXMS(byte far *target,int sourcepage,word length)\r
+PML_CopyFromXMS(byte far *target,int sourcepage,word length, global_game_variables_t *gvar)\r
{\r
- PML_XMSCopy(false,target,sourcepage,length);\r
+ PML_XMSCopy(false,target,sourcepage,length, global_game_variables_t *gvar);\r
}\r
#endif\r
\r
if (gvar->pm.xmm.XMSPresent)\r
{\r
CPURegs.x.dx = gvar->pm.xmm.XMSHandle;\r
- XMS_CALL(XMS_FREE);\r
+ XMS_CALL(XMS_FREE, gvar);\r
if (CPURegs.h.bl)\r
{\r
Quit("PML_ShutdownXMS: Error freeing XMS");\r
\r
for (i = 0;i < PMMaxMainMem;i++)\r
if (gvar->pm.mm.MainMemPages[i])\r
- MM_SetPurge(&gvar->pm.mm.MainMemPages[i],level);\r
- return 0;//TODO FIX\r
+ MM_SetPurge(&gvar->pm.mm.MainMemPages[i],level, gvar);\r
}\r
\r
//\r
// program makes allocation requests of the Memory Mgr.\r
//\r
void\r
-PM_CheckMainMem(void)\r
+PM_CheckMainMem(global_game_variables_t *gvar)\r
{\r
boolean allocfailed;\r
int i,n;\r
PMBlockAttr *used;\r
PageListStruct far *page;\r
\r
- if (!MainPresent)\r
+ if (!gvar->pm.mm.MainPresent)\r
return;\r
\r
- for (i = 0,page = PMPages;i < gvar->pm.fi.ChunksInFile;i++,page++)\r
+ for (i = 0,page = gvar->pm.PMPages;i < gvar->pm.fi.ChunksInFile;i++,page++)\r
{\r
n = page->mainPage;\r
if (n != -1) // Is the page using main memory?\r
{\r
- if (!MainMemPages[n]) // Yep, was the block purged?\r
+ if (!gvar->pm.mm.MainMemPages[n]) // Yep, was the block purged?\r
{\r
page->mainPage = -1; // Yes, mark page as purged & unlocked\r
page->locked = pml_Unlocked;\r
}\r
\r
// Prevent allocation attempts from purging any of our other blocks\r
- PM_LockMainMem();\r
+ PM_LockMainMem(gvar);\r
allocfailed = false;\r
- for (i = 0,p = MainMemPages,used = MainMemUsed;i < PMMaxMainMem;i++,p++,used++)\r
+ for (i = 0,p = gvar->pm.mm.MainMemPages,used = gvar->pm.mm.MainMemUsed; i < PMMaxMainMem;i++,p++,used++)\r
{\r
if (!*p) // If the page got purged\r
{\r
if (*used & pmba_Allocated) // If it was allocated\r
{\r
*used &= ~pmba_Allocated; // Mark as unallocated\r
- MainPagesAvail--; // and decrease available count\r
+ gvar->pm.mm.MainPagesAvail--; // and decrease available count\r
}\r
\r
if (*used & pmba_Used) // If it was used\r
{\r
*used &= ~pmba_Used; // Mark as unused\r
- MainPagesUsed--; // and decrease used count\r
+ gvar->pm.MainPagesUsed--; // and decrease used count\r
}\r
\r
if (!allocfailed)\r
{\r
- MM_BombOnError(false);\r
- MM_GetPtr(p,PMPageSize); // Try to reallocate\r
- if (mmerror) // If it failed,\r
+ MM_BombOnError(false, gvar);\r
+ MM_GetPtr(p,PMPageSize, gvar); // Try to reallocate\r
+ if (gvar->mm.mmerror) // If it failed,\r
allocfailed = true; // don't try any more allocations\r
else // If it worked,\r
{\r
*used |= pmba_Allocated; // Mark as allocated\r
- MainPagesAvail++; // and increase available count\r
+ gvar->pm.mm.MainPagesAvail++; // and increase available count\r
}\r
- MM_BombOnError(true);\r
+ MM_BombOnError(true, gvar);\r
}\r
}\r
}\r
- if (mmerror)\r
- mmerror = false;\r
+ if (gvar->mm.mmerror)\r
+ gvar->mm.mmerror = false;\r
}\r
\r
//\r
// needs to be called.\r
//\r
void\r
-PML_StartupMainMem(void)\r
+PML_StartupMainMem(global_game_variables_t *gvar)\r
{\r
int i,n;\r
memptr *p;\r
\r
- MainPagesAvail = 0;\r
- MM_BombOnError(false);\r
- for (i = 0,p = MainMemPages;i < PMMaxMainMem;i++,p++)\r
+ gvar->pm.mm.MainPagesAvail = 0;\r
+ MM_BombOnError(false, gvar);\r
+ for (i = 0,p = gvar->pm.mm.MainMemPages;i < PMMaxMainMem;i++,p++)\r
{\r
- MM_GetPtr(p,PMPageSize);\r
- if (mmerror)\r
+ MM_GetPtr(p,PMPageSize, gvar);\r
+ if (gvar->mm.mmerror)\r
break;\r
\r
- MainPagesAvail++;\r
- MainMemUsed[i] = pmba_Allocated;\r
+ gvar->pm.mm.MainPagesAvail++;\r
+ gvar->pm.mm.MainMemUsed[i] = pmba_Allocated;\r
}\r
- MM_BombOnError(true);\r
- if (mmerror)\r
- mmerror = false;\r
- if (MainPagesAvail < PMMinMainMem)\r
+ MM_BombOnError(true, gvar);\r
+ if (gvar->mm.mmerror)\r
+ gvar->mm.mmerror = false;\r
+ if (gvar->pm.mm.MainPagesAvail < PMMinMainMem)\r
{\r
Quit("PM_SetupMainMem: Not enough main memory");\r
//return;\r
}\r
- MainPresent = true;\r
+ gvar->pm.mm.MainPresent = true;\r
}\r
\r
//\r
// Page Mgr.\r
//\r
void\r
-PML_ShutdownMainMem(void)\r
+PML_ShutdownMainMem(global_game_variables_t *gvar)\r
{\r
int i;\r
memptr *p;\r
\r
// DEBUG - mark pages as unallocated & decrease page count as appropriate\r
- for (i = 0,p = MainMemPages;i < PMMaxMainMem;i++,p++)\r
+ for (i = 0,p = gvar->pm.mm.MainMemPages;i < PMMaxMainMem;i++,p++)\r
if (*p)\r
- MM_FreePtr(p);\r
+ MM_FreePtr(p, gvar);\r
}\r
\r
/////////////////////////////////////////////////////////////////////////////\r
// PML_ReadFromFile() - Reads some data in from the page file\r
//\r
void\r
-PML_ReadFromFile(byte far *buf,long offset,word length)\r
+PML_ReadFromFile(byte far *buf,long offset,word length, global_game_variables_t *gvar)\r
{\r
if (!buf)\r
{\r
Quit("PML_ReadFromFile: Zero offset");\r
//return;\r
}\r
- if (lseek(PageFile,offset,SEEK_SET) != offset)\r
+ if (lseek(gvar->pm.fi.PageFile,offset,SEEK_SET) != offset)\r
{\r
Quit("PML_ReadFromFile: Seek failed");\r
//return;\r
}\r
- if (!CA_FarRead(PageFile,buf,length))\r
+ if (!CA_FarRead(gvar->pm.fi.PageFile,buf,length, gvar))\r
+ {\r
Quit("PML_ReadFromFile: Read failed");\r
//return;\r
}\r
// PML_OpenPageFile() - Opens the page file and sets up the page info\r
//\r
void\r
-PML_OpenPageFile(void)\r
+PML_OpenPageFile(global_game_variables_t *gvar)\r
{\r
int i;\r
long size;\r
- __SEGA *buf;\r
+ //__SEGA buf;\r
+ memptr buf;\r
dword far *offsetptr;\r
word far *lengthptr;\r
PageListStruct far *page;\r
\r
- PageFile = open(PageFileName,O_RDONLY + O_BINARY);\r
- if (PageFile == -1)\r
+ gvar->pm.fi.PageFile = open(gvar->pm.fi.PageFileName,O_RDONLY + O_BINARY);\r
+ if (gvar->pm.fi.PageFile == -1)\r
{\r
Quit("PML_OpenPageFile: Unable to open page file");\r
//return;\r
}\r
\r
// Read in header variables\r
- read(PageFile,&gvar->pm.fi.ChunksInFile,sizeof(gvar->pm.fi.ChunksInFile));\r
- read(PageFile,&PMSpriteStart,sizeof(PMSpriteStart));\r
- read(PageFile,&PMSoundStart,sizeof(PMSoundStart));\r
+ read(gvar->pm.fi.PageFile,&gvar->pm.fi.ChunksInFile,sizeof(gvar->pm.fi.ChunksInFile));\r
+ read(gvar->pm.fi.PageFile,&gvar->pm.fi.PMSpriteStart,sizeof(gvar->pm.fi.PMSpriteStart));\r
+ read(gvar->pm.fi.PageFile,&gvar->pm.fi.PMSoundStart,sizeof(gvar->pm.fi.PMSoundStart));\r
\r
// Allocate and clear the page list\r
- PMNumBlocks = gvar->pm.fi.ChunksInFile;\r
- MM_GetPtr(&(memptr)PMSegPages,sizeof(PageListStruct) * PMNumBlocks);\r
- MM_SetLock(&(memptr)PMSegPages,true);\r
- PMPages = (PageListStruct far *)PMSegPages;\r
- _fmemset(PMPages,0,sizeof(PageListStruct) * PMNumBlocks);\r
+ gvar->pm.PMNumBlocks = gvar->pm.fi.ChunksInFile;\r
+ MM_GetPtr((memptr *)gvar->pm.PMSegPages, sizeof(PageListStruct) * (gvar->pm.PMNumBlocks), gvar);\r
+ MM_SetLock((memptr *)gvar->pm.PMSegPages,true, gvar);\r
+ gvar->pm.PMPages = (PageListStruct far *)gvar->pm.PMSegPages;\r
+ _fmemset(gvar->pm.PMPages,0,sizeof(PageListStruct) * gvar->pm.PMNumBlocks);\r
\r
// Read in the chunk offsets\r
size = sizeof(dword) * gvar->pm.fi.ChunksInFile;\r
- MM_GetPtr(&buf,size);\r
- if (!CA_FarRead(PageFile,(byte far *)buf,size))\r
+ MM_GetPtr(&buf, size, gvar);\r
+ if (!CA_FarRead(gvar->pm.fi.PageFile,(byte far *)buf,size, gvar))\r
{\r
Quit("PML_OpenPageFile: Offset read failed");\r
//return;\r
}\r
offsetptr = (dword far *)buf;\r
- for (i = 0,page = PMPages;i < gvar->pm.fi.ChunksInFile;i++,page++)\r
+ for (i = 0,page = gvar->pm.PMPages;i < gvar->pm.fi.ChunksInFile;i++,page++)\r
page->offset = *offsetptr++;\r
- MM_FreePtr(&buf);\r
+ MM_FreePtr(&buf, gvar);\r
\r
// Read in the chunk lengths\r
size = sizeof(word) * gvar->pm.fi.ChunksInFile;\r
- MM_GetPtr(&buf,size);\r
- if (!CA_FarRead(PageFile,(byte far *)buf,size))\r
+ MM_GetPtr(&buf,size, gvar);\r
+ if (!CA_FarRead(gvar->pm.fi.PageFile,(byte far *)buf,size, gvar))\r
{\r
Quit("PML_OpenPageFile: Length read failed");\r
//return;\r
}\r
lengthptr = (word far *)buf;\r
- for (i = 0,page = PMPages;i < gvar->pm.fi.ChunksInFile;i++,page++)\r
+ for (i = 0,page = gvar->pm.PMPages;i < gvar->pm.fi.ChunksInFile;i++,page++)\r
page->length = *lengthptr++;\r
- MM_FreePtr(&buf);\r
+ MM_FreePtr(&buf, gvar);\r
}\r
\r
//\r
// PML_ClosePageFile() - Closes the page file\r
//\r
void\r
-PML_ClosePageFile(void)\r
+PML_ClosePageFile(global_game_variables_t *gvar)\r
{\r
- if (PageFile != -1)\r
- close(PageFile);\r
- if (PMSegPages)\r
+ if (gvar->pm.fi.PageFile != -1)\r
+ close(gvar->pm.fi.PageFile);\r
+ if (gvar->pm.PMSegPages)\r
{\r
- MM_SetLock(&(memptr)PMSegPages,false);\r
- MM_FreePtr(&(__SEGA *)PMSegPages);\r
+ MM_SetLock((memptr)gvar->pm.PMSegPages,false, gvar);\r
+ MM_FreePtr((memptr)gvar->pm.PMSegPages, gvar);\r
}\r
}\r
\r
/////////////////////////////////////////////////////////////////////////////\r
\r
//\r
-// PML_Getgvar->pm.emm.EMSAddress()\r
+// PML_GetEMSAddress()\r
//\r
// Page is in EMS, so figure out which EMS physical page should be used\r
// to map our page in. If normal page, use EMS physical page 3, else\r
// use the physical page specified by the lock type\r
//\r
-#ifdef __DEBUG__\r
+#ifndef __DEBUG_2__\r
#pragma argsused // DEBUG - remove lock parameter\r
memptr\r
-PML_Getgvar->pm.emm.EMSAddress(int page,PMLockType lock)\r
+PML_GetEMSAddress(int page,PMLockType lock, global_game_variables_t *gvar)\r
{\r
int i,emspage;\r
word emsoff,emsbase,offset;\r
// See if this page is already mapped in\r
for (i = 0;i < EMSFrameCount;i++)\r
{\r
- if (EMSList[i].basegvar->pm.emm.EMSPage == emsbase)\r
+ if (gvar->pm.emm.EMSList[i].baseEMSPage == emsbase)\r
{\r
emspage = i; // Yep - don't do a redundant remapping\r
break;\r
// If page isn't already mapped in, find LRU EMS frame, and use it\r
if (emspage == -1)\r
{\r
- dword last = MAXLONG;\r
+ dword last = LONG_MAX;\r
for (i = 0;i < EMSFrameCount;i++)\r
{\r
- if (EMSList[i].lastHit < last)\r
+ if (gvar->pm.emm.EMSList[i].lastHit < last)\r
{\r
emspage = i;\r
- last = EMSList[i].lastHit;\r
+ last = gvar->pm.emm.EMSList[i].lastHit;\r
}\r
}\r
\r
- EMSList[emspage].basegvar->pm.emm.EMSPage = emsbase;\r
- PML_MapEMS(page / PMEMSSubPage,emspage);\r
+ gvar->pm.emm.EMSList[emspage].baseEMSPage = emsbase;\r
+ PML_MapEMS(page / PMEMSSubPage,emspage, gvar);\r
}\r
\r
if (emspage == -1)\r
- Quit("PML_Getgvar->pm.emm.EMSAddress: EMS find failed");\r
+ Quit("PML_GetEMSAddress: EMS find failed");\r
\r
- EMSList[emspage].lastHit = PMFrameCount;\r
+ gvar->pm.emm.EMSList[emspage].lastHit = gvar->pm.PMFrameCount;\r
offset = emspage * EMSPageSizeSeg;\r
offset += emsoff * PMPageSizeSeg;\r
return((memptr)(gvar->pm.emm.EMSPageFrame + offset));\r
}\r
#else\r
memptr\r
-PML_Getgvar->pm.emm.EMSAddress(int page,PMLockType lock)\r
+PML_GetEMSAddress(int page,PMLockType lock, global_game_variables_t *gvar)\r
{\r
word emspage;\r
\r
\r
PML_MapEMS(page / PMEMSSubPage,emspage);\r
\r
- return((memptr)(gvar->pm.emm.EMSPageFrame + (emspage * EMSPageSizeSeg)\r
+ return((memptr)(EMSPageFrame + (emspage * EMSPageSizeSeg)\r
+ ((page & (PMEMSSubPage - 1)) * PMPageSizeSeg)));\r
}\r
#endif\r
//\r
//\r
memptr\r
-PM_GetPageAddress(int pagenum)\r
+PM_GetPageAddress(int pagenum, global_game_variables_t *gvar)\r
{\r
PageListStruct far *page;\r
\r
- page = &PMPages[pagenum];\r
+ page = &gvar->pm.PMPages[pagenum];\r
if (page->mainPage != -1)\r
- return(MainMemPages[page->mainPage]);\r
+ return(gvar->pm.mm.MainMemPages[page->mainPage]);\r
else if (page->emsPage != -1)\r
- return(PML_Getgvar->pm.emm.EMSAddress(page->emsPage,page->locked));\r
+ return(PML_GetEMSAddress(page->emsPage,page->locked, gvar));\r
else\r
return(nil);\r
}\r
// present & unlocked main/EMS page (or main page if mainonly is true)\r
//\r
int\r
-PML_GiveLRUPage(boolean mainonly)\r
+PML_GiveLRUPage(boolean mainonly, global_game_variables_t *gvar)\r
{\r
int i,lru;\r
long last;\r
PageListStruct far *page;\r
\r
- for (i = 0,page = PMPages,lru = -1,last = MAXLONG;i < gvar->pm.fi.ChunksInFile;i++,page++)\r
+ for (i = 0,page = gvar->pm.PMPages,lru = -1,last = LONG_MAX;i < gvar->pm.fi.ChunksInFile;i++,page++)\r
{\r
if\r
(\r
}\r
\r
//\r
-// PML_GiveLRUgvar->pm.xmm.XMSPage() - Returns the page # of the least recently used\r
+// PML_GiveLRUXMSPage() - Returns the page # of the least recently used\r
// (and present) XMS page.\r
// This routine won't return the XMS page protected (by gvar->pm.xmm.XMSProtectPage)\r
//\r
int\r
-PML_GiveLRUgvar->pm.xmm.XMSPage(void)\r
+PML_GiveLRUXMSPage(global_game_variables_t *gvar)\r
{\r
int i,lru;\r
long last;\r
PageListStruct far *page;\r
\r
- for (i = 0,page = PMPages,lru = -1,last = MAXLONG;i < gvar->pm.fi.ChunksInFile;i++,page++)\r
+ for (i = 0,page = gvar->pm.PMPages,lru = -1,last = LONG_MAX;i < gvar->pm.fi.ChunksInFile;i++,page++)\r
{\r
if\r
(\r
// it with the main/EMS page\r
//\r
void\r
-PML_PutPageInXMS(int pagenum)\r
+PML_PutPageInXMS(int pagenum, global_game_variables_t *gvar)\r
{\r
int usexms;\r
PageListStruct far *page;\r
if (!gvar->pm.xmm.XMSPresent)\r
return;\r
\r
- page = &PMPages[pagenum];\r
+ page = &gvar->pm.PMPages[pagenum];\r
if (page->xmsPage != -1)\r
return; // Already in XMS\r
\r
- if (gvar->pm.xmm.XMSPagesUsed < gvar->pm.xmm.XMSPagesAvail)\r
- page->xmsPage = gvar->pm.xmm.XMSPagesUsed++;\r
+ if (gvar->pm.XMSPagesUsed < gvar->pm.xmm.XMSPagesAvail)\r
+ page->xmsPage = gvar->pm.XMSPagesUsed++;\r
else\r
{\r
- usexms = PML_GiveLRUgvar->pm.xmm.XMSPage();\r
+ usexms = PML_GiveLRUXMSPage(gvar);\r
if (usexms == -1)\r
Quit("PML_PutPageInXMS: No XMS LRU");\r
- page->xmsPage = PMPages[usexms].xmsPage;\r
- PMPages[usexms].xmsPage = -1;\r
+ page->xmsPage = gvar->pm.PMPages[usexms].xmsPage;\r
+ gvar->pm.PMPages[usexms].xmsPage = -1;\r
}\r
- PML_CopyToXMS(PM_GetPageAddress(pagenum),page->xmsPage,page->length);\r
+ PML_CopyToXMS(PM_GetPageAddress(pagenum, gvar),page->xmsPage,page->length, gvar);\r
}\r
\r
//\r
// the old one's address space. Returns the address of the new page.\r
//\r
memptr\r
-PML_TransferPageSpace(int orig,int new)\r
+PML_TransferPageSpace(int orig,int new, global_game_variables_t *gvar)\r
{\r
memptr addr;\r
PageListStruct far *origpage,far *newpage;\r
if (orig == new)\r
Quit("PML_TransferPageSpace: Identity replacement");\r
\r
- origpage = &PMPages[orig];\r
- newpage = &PMPages[new];\r
+ origpage = &gvar->pm.PMPages[orig];\r
+ newpage = &gvar->pm.PMPages[new];\r
\r
if (origpage->locked != pml_Unlocked)\r
Quit("PML_TransferPageSpace: Killing locked page");\r
Quit("PML_TransferPageSpace: Reusing non-existent page");\r
\r
// Copy page that's about to be purged into XMS\r
- PML_PutPageInXMS(orig);\r
+ PML_PutPageInXMS(orig, gvar);\r
\r
// Get the address, and force EMS into a physical page if necessary\r
- addr = PM_GetPageAddress(orig);\r
+ addr = PM_GetPageAddress(orig, gvar);\r
\r
// Steal the address\r
newpage->emsPage = origpage->emsPage;\r
// will be looked at by PML_GiveLRUPage().\r
//\r
byte far *\r
-PML_GetAPageBuffer(int pagenum,boolean mainonly)\r
+PML_GetAPageBuffer(int pagenum,boolean mainonly, global_game_variables_t *gvar)\r
{\r
byte far *addr = nil;\r
int i,n;\r
PMBlockAttr *used;\r
PageListStruct far *page;\r
\r
- page = &PMPages[pagenum];\r
- if ((gvar->pm.emm.EMSPagesUsed < gvar->pm.emm.EMSPagesAvail) && !mainonly)\r
+ page = &gvar->pm.PMPages[pagenum];\r
+ if ((gvar->pm.EMSPagesUsed < gvar->pm.emm.EMSPagesAvail) && !mainonly)\r
{\r
// There's remaining EMS - use it\r
- page->emsPage = gvar->pm.emm.EMSPagesUsed++;\r
- addr = PML_Getgvar->pm.emm.EMSAddress(page->emsPage,page->locked);\r
+ page->emsPage = gvar->pm.EMSPagesUsed++;\r
+ addr = PML_GetEMSAddress(page->emsPage,page->locked, gvar);\r
}\r
- else if (MainPagesUsed < MainPagesAvail)\r
+ else if (gvar->pm.MainPagesUsed < gvar->pm.mm.MainPagesAvail)\r
{\r
// There's remaining main memory - use it\r
- for (i = 0,n = -1,used = MainMemUsed;i < PMMaxMainMem;i++,used++)\r
+ for (i = 0,n = -1,used = gvar->pm.mm.MainMemUsed;i < PMMaxMainMem;i++,used++)\r
{\r
if ((*used & pmba_Allocated) && !(*used & pmba_Used))\r
{\r
}\r
if (n == -1)\r
Quit("PML_GetPageBuffer: MainPagesAvail lied");\r
- addr = MainMemPages[n];\r
+ addr = gvar->pm.mm.MainMemPages[n];\r
if (!addr)\r
Quit("PML_GetPageBuffer: Purged main block");\r
page->mainPage = n;\r
- MainPagesUsed++;\r
+ gvar->pm.MainPagesUsed++;\r
}\r
else\r
- addr = PML_TransferPageSpace(PML_GiveLRUPage(mainonly),pagenum);\r
+ addr = PML_TransferPageSpace(PML_GiveLRUPage(mainonly, gvar),pagenum, gvar);\r
\r
if (!addr)\r
Quit("PML_GetPageBuffer: Search failed");\r
// PML_GetPageFromXMS() - If page is in XMS, find LRU main/EMS page and\r
// replace it with the page from XMS. If mainonly is true, will only\r
// search for LRU main page.\r
-// gvar->pm.xmm.XMSProtectPage is set to the page to be retrieved from XMS, so that if\r
+// XMSProtectPage is set to the page to be retrieved from XMS, so that if\r
// the page from which we're stealing the main/EMS from isn't in XMS,\r
// it won't copy over the page that we're trying to get from XMS.\r
// (pages that are being purged are copied into XMS, if possible)\r
//\r
memptr\r
-PML_GetPageFromXMS(int pagenum,boolean mainonly)\r
+PML_GetPageFromXMS(int pagenum,boolean mainonly, global_game_variables_t *gvar)\r
{\r
byte far *checkaddr;\r
memptr addr = nil;\r
PageListStruct far *page;\r
\r
- page = &PMPages[pagenum];\r
+ page = &gvar->pm.PMPages[pagenum];\r
if (gvar->pm.xmm.XMSPresent && (page->xmsPage != -1))\r
{\r
gvar->pm.xmm.XMSProtectPage = pagenum;\r
- checkaddr = PML_GetAPageBuffer(pagenum,mainonly);\r
+ checkaddr = PML_GetAPageBuffer(pagenum,mainonly, gvar);\r
if (FP_OFF(checkaddr))\r
Quit("PML_GetPageFromXMS: Non segment pointer");\r
addr = (memptr)FP_SEG(checkaddr);\r
- PML_CopyFromXMS(addr,page->xmsPage,page->length);\r
+ PML_CopyFromXMS(addr,page->xmsPage,page->length, gvar);\r
gvar->pm.xmm.XMSProtectPage = -1;\r
}\r
\r
// only be loaded into main.\r
//\r
void\r
-PML_LoadPage(int pagenum,boolean mainonly)\r
+PML_LoadPage(int pagenum,boolean mainonly, global_game_variables_t *gvar)\r
{\r
byte far *addr;\r
PageListStruct far *page;\r
\r
- addr = PML_GetAPageBuffer(pagenum,mainonly);\r
- page = &PMPages[pagenum];\r
- PML_ReadFromFile(addr,page->offset,page->length);\r
+ addr = PML_GetAPageBuffer(pagenum,mainonly, gvar);\r
+ page = &gvar->pm.PMPages[pagenum];\r
+ PML_ReadFromFile(addr,page->offset,page->length, gvar);\r
}\r
\r
//\r
//\r
#pragma warn -pia\r
memptr\r
-PM_GetPage(int pagenum)\r
+PM_GetPage(int pagenum, global_game_variables_t *gvar)\r
{\r
memptr result;\r
\r
if (pagenum >= gvar->pm.fi.ChunksInFile)\r
Quit("PM_GetPage: Invalid page request");\r
\r
-#if __DEBUG__ // for debugging\r
+#ifdef __DEBUG_2__ // for debugging\r
__asm {\r
mov dx,STATUS_REGISTER_1\r
in al,dx\r
}\r
#endif\r
\r
- if (!(result = PM_GetPageAddress(pagenum)))\r
+ if (!(result = PM_GetPageAddress(pagenum, gvar)))\r
{\r
- boolean mainonly = (pagenum >= PMSoundStart);\r
-if (!PMPages[pagenum].offset) // JDC: sparse page\r
+ boolean mainonly = (pagenum >= gvar->pm.fi.PMSoundStart);\r
+if (!gvar->pm.PMPages[pagenum].offset) // JDC: sparse page\r
Quit ("Tried to load a sparse page!");\r
- if (!(result = PML_GetPageFromXMS(pagenum,mainonly)))\r
+ if (!(result = PML_GetPageFromXMS(pagenum,mainonly, gvar)))\r
{\r
- if (PMPages[pagenum].lastHit == PMFrameCount)\r
- PMThrashing++;\r
+ if (gvar->pm.PMPages[pagenum].lastHit == gvar->pm.PMFrameCount)\r
+ gvar->pm.PMThrashing++;\r
\r
- PML_LoadPage(pagenum,mainonly);\r
- result = PM_GetPageAddress(pagenum);\r
+ PML_LoadPage(pagenum,mainonly, gvar);\r
+ result = PM_GetPageAddress(pagenum, gvar);\r
}\r
}\r
- PMPages[pagenum].lastHit = PMFrameCount;\r
+ gvar->pm.PMPages[pagenum].lastHit = gvar->pm.PMFrameCount;\r
\r
-#if __DEBUG__ // for debugging\r
+#ifdef __DEBUG_2__ // for debugging\r
__asm{\r
mov dx,STATUS_REGISTER_1\r
in al,dx\r
// specified when returning the address. For sound stuff.\r
//\r
void\r
-PM_SetPageLock(int pagenum,PMLockType lock)\r
+PM_SetPageLock(int pagenum,PMLockType lock, global_game_variables_t *gvar)\r
{\r
- if (pagenum < PMSoundStart)\r
+ if (pagenum < gvar->pm.fi.PMSoundStart)\r
Quit("PM_SetPageLock: Locking/unlocking non-sound page");\r
\r
- PMPages[pagenum].locked = lock;\r
+ gvar->pm.PMPages[pagenum].locked = lock;\r
}\r
\r
//\r
// page, and the total pages that need to be loaded (for thermometer).\r
//\r
void\r
-PM_Preload(boolean (*update)(word current,word total))\r
+PM_Preload(boolean (*update)(word current,word total), global_game_variables_t *gvar)\r
{\r
int i,j,\r
page,oogypage;\r
memptr addr;\r
PageListStruct far *p;\r
\r
- mainfree = (MainPagesAvail - MainPagesUsed) + (gvar->pm.emm.EMSPagesAvail - gvar->pm.emm.EMSPagesUsed);\r
- xmsfree = (gvar->pm.xmm.XMSPagesAvail - gvar->pm.xmm.XMSPagesUsed);\r
+ mainfree = (gvar->pm.mm.MainPagesAvail - gvar->pm.MainPagesUsed) + (gvar->pm.emm.EMSPagesAvail - gvar->pm.EMSPagesUsed);\r
+ xmsfree = (gvar->pm.xmm.XMSPagesAvail - gvar->pm.XMSPagesUsed);\r
\r
xmstotal = maintotal = 0;\r
\r
for (i = 0;i < gvar->pm.fi.ChunksInFile;i++)\r
{\r
- if (!PMPages[i].offset)\r
+ if (!gvar->pm.PMPages[i].offset)\r
continue; // sparse\r
\r
- if ( PMPages[i].emsPage != -1 || PMPages[i].mainPage != -1 )\r
+ if ( gvar->pm.PMPages[i].emsPage != -1 || gvar->pm.PMPages[i].mainPage != -1 )\r
continue; // already in main mem\r
\r
if ( mainfree )\r
maintotal++;\r
mainfree--;\r
}\r
- else if ( xmsfree && (PMPages[i].xmsPage == -1) )\r
+ else if ( xmsfree && (gvar->pm.PMPages[i].xmsPage == -1) )\r
{\r
xmstotal++;\r
xmsfree--;\r
//\r
while (maintotal)\r
{\r
- while ( !PMPages[page].offset || PMPages[page].mainPage != -1\r
- || PMPages[page].emsPage != -1 )\r
+ while ( !gvar->pm.PMPages[page].offset || gvar->pm.PMPages[page].mainPage != -1\r
+ || gvar->pm.PMPages[page].emsPage != -1 )\r
page++;\r
\r
if (page >= gvar->pm.fi.ChunksInFile)\r
Quit ("PM_Preload: Pages>=gvar->pm.fi.ChunksInFile");\r
\r
- PM_GetPage(page);\r
+ PM_GetPage(page, gvar);\r
\r
page++;\r
current++;\r
//\r
if (xmstotal)\r
{\r
- for (oogypage = 0 ; PMPages[oogypage].mainPage == -1 ; oogypage++)\r
+ for (oogypage = 0 ; gvar->pm.PMPages[oogypage].mainPage == -1 ; oogypage++)\r
;\r
- addr = PM_GetPage(oogypage);\r
+ addr = PM_GetPage(oogypage, gvar);\r
if (!addr)\r
Quit("PM_Preload: XMS buffer failed");\r
\r
while (xmstotal)\r
{\r
- while ( !PMPages[page].offset || PMPages[page].xmsPage != -1 )\r
+ while ( !gvar->pm.PMPages[page].offset || gvar->pm.PMPages[page].xmsPage != -1 )\r
page++;\r
\r
if (page >= gvar->pm.fi.ChunksInFile)\r
Quit ("PM_Preload: Pages>=gvar->pm.fi.ChunksInFile");\r
\r
- p = &PMPages[page];\r
+ p = &gvar->pm.PMPages[page];\r
\r
- p->xmsPage = gvar->pm.xmm.XMSPagesUsed++;\r
- if (gvar->pm.xmm.XMSPagesUsed > gvar->pm.xmm.XMSPagesAvail)\r
+ p->xmsPage = gvar->pm.XMSPagesUsed++;\r
+ if (gvar->pm.XMSPagesUsed > gvar->pm.xmm.XMSPagesAvail)\r
Quit("PM_Preload: Exceeded XMS pages");\r
if (p->length > PMPageSize)\r
Quit("PM_Preload: Page too long");\r
\r
- PML_ReadFromFile((byte far *)addr,p->offset,p->length);\r
- PML_CopyToXMS((byte far *)addr,p->xmsPage,p->length);\r
+ PML_ReadFromFile((byte far *)addr,p->offset,p->length, gvar);\r
+ PML_CopyToXMS((byte far *)addr,p->xmsPage,p->length, gvar);\r
\r
page++;\r
current++;\r
update(current,total);\r
}\r
\r
- p = &PMPages[oogypage];\r
- PML_ReadFromFile((byte far *)addr,p->offset,p->length);\r
+ p = &gvar->pm.PMPages[oogypage];\r
+ PML_ReadFromFile((byte far *)addr,p->offset,p->length, gvar);\r
}\r
\r
update(total,total);\r
//\r
//\r
void\r
-PM_NextFrame(void)\r
+PM_NextFrame(global_game_variables_t *gvar)\r
{\r
int i;\r
\r
// Frame count overrun - kill the LRU hit entries & reset frame count\r
- if (++PMFrameCount >= MAXLONG - 4)\r
+ if (++gvar->pm.PMFrameCount >= LONG_MAX - 4)\r
{\r
- for (i = 0;i < PMNumBlocks;i++)\r
- PMPages[i].lastHit = 0;\r
- PMFrameCount = 0;\r
+ for (i = 0;i < gvar->pm.PMNumBlocks;i++)\r
+ gvar->pm.PMPages[i].lastHit = 0;\r
+ gvar->pm.PMFrameCount = 0;\r
}\r
\r
-#if 0\r
- for (i = 0;i < PMSoundStart;i++)\r
+//#if 0\r
+ for (i = 0;i < gvar->pm.fi.PMSoundStart;i++)\r
{\r
- if (PMPages[i].locked)\r
+ if (gvar->pm.PMPages[i].locked)\r
{\r
char buf[40];\r
sprintf(buf,"PM_NextFrame: Page %d is locked",i);\r
Quit(buf);\r
}\r
}\r
-#endif\r
+//#endif\r
\r
- if (PMPanicMode)\r
+ if (gvar->pm.PMPanicMode)\r
{\r
// DEBUG - set border color\r
- if ((!PMThrashing) && (!--PMPanicMode))\r
+ if ((!gvar->pm.PMThrashing) && (!--gvar->pm.PMPanicMode))\r
{\r
// DEBUG - reset border color\r
}\r
}\r
- if (PMThrashing >= PMThrashThreshold)\r
- PMPanicMode = PMUnThrashThreshold;\r
- PMThrashing = false;\r
+ if (gvar->pm.PMThrashing >= PMThrashThreshold)\r
+ gvar->pm.PMPanicMode = PMUnThrashThreshold;\r
+ gvar->pm.PMThrashing = false;\r
}\r
\r
//\r
// PM_Reset() - Sets up caching structures\r
//\r
void\r
-PM_Reset(void)\r
+PM_Reset(global_game_variables_t *gvar)\r
{\r
int i;\r
PageListStruct far *page;\r
gvar->pm.emm.EMSPagesAvail = gvar->pm.emm.EMSAvail * (EMSPageSizeKB / PMPageSizeKB);\r
gvar->pm.emm.EMSPhysicalPage = 0;\r
\r
- MainPagesUsed = gvar->pm.emm.EMSPagesUsed = gvar->pm.xmm.XMSPagesUsed = 0;\r
+ gvar->pm.MainPagesUsed = gvar->pm.EMSPagesUsed = gvar->pm.XMSPagesUsed = 0;\r
\r
- PMPanicMode = false;\r
+ gvar->pm.PMPanicMode = false;\r
\r
// Initialize page list\r
- for (i = 0,page = PMPages;i < PMNumBlocks;i++,page++)\r
+ for (i = 0,page = gvar->pm.PMPages;i < gvar->pm.PMNumBlocks;i++,page++)\r
{\r
page->mainPage = -1;\r
page->emsPage = -1;\r
// PM_Startup() - Start up the Page Mgr\r
//\r
void\r
-PM_Startup(void)\r
+PM_Startup(global_game_variables_t *gvar)\r
{\r
boolean nomain,noems,noxms;\r
int i;\r
\r
- if (PMStarted)\r
+ if (gvar->pm.PMStarted)\r
return;\r
\r
+ strcat(&(gvar->pm.fi.PageFileName), "VSWAP.");\r
+ gvar->pm.fi.PageFile = -1;\r
+ gvar->pm.xmm.XMSProtectPage = -1;\r
+\r
nomain = noems = noxms = false;\r
- for (i = 1;i < _argc;i++)\r
+ for (i = 1;i <\r
+#ifdef __WATCOMC__\r
+ __argc\r
+#endif\r
+#ifdef __BORLANDC__\r
+ _argc\r
+#endif\r
+ ;i++)\r
{\r
- switch (US_CheckParm(_argv[i],ParmStrings))\r
+ switch (US_CheckParm(\r
+#ifdef __WATCOMC__\r
+ __argv[i]\r
+#endif\r
+#ifdef __BORLANDC__\r
+ _argv[i]\r
+#endif\r
+ ,ParmStrings))\r
{\r
case 0:\r
nomain = true;\r
}\r
}\r
\r
- PML_OpenPageFile();\r
+ PML_OpenPageFile(gvar);\r
\r
if (!noems)\r
- PML_StartupEMS();\r
+ PML_StartupEMS(gvar);\r
if (!noxms)\r
- PML_StartupXMS();\r
+ PML_StartupXMS(gvar);\r
\r
if (nomain && !gvar->pm.emm.EMSPresent)\r
{\r
//return;\r
}\r
else\r
- PML_StartupMainMem();\r
+ PML_StartupMainMem(gvar);\r
\r
- PM_Reset();\r
+ PM_Reset(gvar);\r
\r
- PMStarted = true;\r
+ gvar->pm.PMStarted = true;\r
}\r
\r
//\r
// PM_Shutdown() - Shut down the Page Mgr\r
//\r
void\r
-PM_Shutdown(void)\r
+PM_Shutdown(global_game_variables_t *gvar)\r
{\r
- PML_ShutdownXMS();\r
- PML_ShutdownEMS();\r
+ PML_ShutdownXMS(gvar);\r
+ PML_ShutdownEMS(gvar);\r
\r
- if (!PMStarted)\r
+ if (!gvar->pm.PMStarted)\r
return;\r
\r
- PML_ClosePageFile();\r
+ PML_ClosePageFile(gvar);\r
\r
- PML_ShutdownMainMem();\r
+ PML_ShutdownMainMem(gvar);\r
}\r
projects / 16.git / blobdiff