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use private dos data area for mscdex functions

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@3095
This commit is contained in:
Sebastian Strohhäcker 2008-02-06 21:56:32 +00:00
parent 8ee3853d17
commit 6bb6bdc967
1 changed files with 54 additions and 63 deletions
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117
src/dos/dos_mscdex.cpp
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@ -1,5 +1,5 @@
/*
* Copyright (C) 2002-2007 The DOSBox Team
* Copyright (C) 2002-2008 The DOSBox Team
*
* 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
@ -16,7 +16,7 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/* $Id: dos_mscdex.cpp,v 1.51 2007-12-30 08:21:35 qbix79 Exp $ */
/* $Id: dos_mscdex.cpp,v 1.52 2008-02-06 21:56:32 c2woody Exp $ */
#include <string.h>
#include <ctype.h>
@ -138,6 +138,7 @@ public:
private:
PhysPt GetDefaultBuffer (void);
PhysPt GetTempBuffer (void);
Bit16u numDrives;
@ -161,8 +162,7 @@ public:
Bit16u rootDriverHeaderSeg;
};
CMscdex::CMscdex(void)
{
CMscdex::CMscdex(void) {
numDrives = 0;
rootDriverHeaderSeg = 0;
defaultBufSeg = 0;
@ -171,12 +171,12 @@ CMscdex::CMscdex(void)
for (Bit32u i=0; i<MSCDEX_MAX_DRIVES; i++) cdrom[i] = 0;
};
CMscdex::~CMscdex(void)
{
if (defaultBufSeg!=0) {
DOS_FreeMemory(defaultBufSeg);
CMscdex::~CMscdex(void) {
/* if (defaultBufSeg!=0) {
DOS_FreeMemory(defaultBufSeg); // can't free that
defaultBufSeg = 0;
}
} */
defaultBufSeg = 0;
for (Bit16u i=0; i<GetNumDrives(); i++) {
delete (cdrom)[i];
cdrom[i] = 0;
@ -396,17 +396,23 @@ void CMscdex::ReplaceDrive(CDROM_Interface* newCdrom, Bit8u subUnit) {
StopAudio(subUnit);
}
PhysPt CMscdex::GetDefaultBuffer(void)
{
PhysPt CMscdex::GetDefaultBuffer(void) {
if (defaultBufSeg==0) {
Bit16u size = 128; //Size in block is size in pages ?
Bit16u size = (2352*2+15)/16;
defaultBufSeg = DOS_GetMemory(size);
};
return PhysMake(defaultBufSeg,2352);
};
PhysPt CMscdex::GetTempBuffer(void) {
if (defaultBufSeg==0) {
Bit16u size = (2352*2+15)/16;
defaultBufSeg = DOS_GetMemory(size);
};
return PhysMake(defaultBufSeg,0);
};
void CMscdex::GetDriverInfo (PhysPt data)
{
void CMscdex::GetDriverInfo (PhysPt data) {
for (Bit16u i=0; i<GetNumDrives(); i++) {
mem_writeb(data ,(Bit8u)i); // subunit
mem_writed(data+1,RealMake(rootDriverHeaderSeg,0));
@ -563,71 +569,56 @@ bool CMscdex::ReadVTOC(Bit16u drive, Bit16u volume, PhysPt data, Bit16u& error)
return true;
};
bool CMscdex::GetVolumeName(Bit8u subUnit, char* data)
{
bool CMscdex::GetVolumeName(Bit8u subUnit, char* data) {
if (subUnit>=numDrives) return false;
Bit16u drive = dinfo[subUnit].drive;
Bit16u error,seg,size = 128;
Bit16u error;
bool success = false;
if (DOS_AllocateMemory(&seg,&size)) {
PhysPt ptoc = PhysMake(seg,0);
success = ReadVTOC(drive,0x00,ptoc,error);
if (success) {
MEM_StrCopy(ptoc+40,data,31);
data[31] = 0;
rtrim(data);
};
DOS_FreeMemory(seg);
} else { LOG(LOG_MISC,LOG_ERROR)("MSCDEX buffer allocation failed."); };
PhysPt ptoc = GetTempBuffer();
success = ReadVTOC(drive,0x00,ptoc,error);
if (success) {
MEM_StrCopy(ptoc+40,data,31);
data[31] = 0;
rtrim(data);
};
return success;
};
bool CMscdex::GetCopyrightName(Bit16u drive, PhysPt data)
{
Bit16u error,seg,size = 128;
bool CMscdex::GetCopyrightName(Bit16u drive, PhysPt data) {
Bit16u error;
bool success = false;
if (DOS_AllocateMemory(&seg,&size)) {
PhysPt ptoc = PhysMake(seg,0);
success = ReadVTOC(drive,0x00,ptoc,error);
if (success) {
MEM_BlockCopy(data,ptoc+702,37);
mem_writeb(data+37,0);
};
DOS_FreeMemory(seg);
} else { LOG(LOG_MISC,LOG_ERROR)("MSCDEX buffer allocation failed."); };
PhysPt ptoc = GetTempBuffer();
success = ReadVTOC(drive,0x00,ptoc,error);
if (success) {
MEM_BlockCopy(data,ptoc+702,37);
mem_writeb(data+37,0);
};
return success;
};
bool CMscdex::GetAbstractName(Bit16u drive, PhysPt data)
{
Bit16u error,seg,size = 128;
bool CMscdex::GetAbstractName(Bit16u drive, PhysPt data) {
Bit16u error;
bool success = false;
if (DOS_AllocateMemory(&seg,&size)) {
PhysPt ptoc = PhysMake(seg,0);
success = ReadVTOC(drive,0x00,ptoc,error);
if (success) {
MEM_BlockCopy(data,ptoc+739,37);
mem_writeb(data+37,0);
};
DOS_FreeMemory(seg);
} else { LOG(LOG_MISC,LOG_ERROR)("MSCDEX buffer allocation failed."); };
PhysPt ptoc = GetTempBuffer();
success = ReadVTOC(drive,0x00,ptoc,error);
if (success) {
MEM_BlockCopy(data,ptoc+739,37);
mem_writeb(data+37,0);
};
return success;
};
bool CMscdex::GetDocumentationName(Bit16u drive, PhysPt data)
{
Bit16u error,seg,size = 128;
bool CMscdex::GetDocumentationName(Bit16u drive, PhysPt data) {
Bit16u error;
bool success = false;
if (DOS_AllocateMemory(&seg,&size)) {
PhysPt ptoc = PhysMake(seg,0);
success = ReadVTOC(drive,0x00,ptoc,error);
if (success) {
MEM_BlockCopy(data,ptoc+776,37);
mem_writeb(data+37,0);
};
DOS_FreeMemory(seg);
} else { LOG(LOG_MISC,LOG_ERROR)("MSCDEX buffer allocation failed."); };
PhysPt ptoc = GetTempBuffer();
success = ReadVTOC(drive,0x00,ptoc,error);
if (success) {
MEM_BlockCopy(data,ptoc+776,37);
mem_writeb(data+37,0);
};
return success;
};