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Diffstat (limited to 'engines/lab/storage.cpp')
-rw-r--r-- | engines/lab/storage.cpp | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/engines/lab/storage.cpp b/engines/lab/storage.cpp new file mode 100644 index 0000000000..0d21b937c9 --- /dev/null +++ b/engines/lab/storage.cpp @@ -0,0 +1,89 @@ +/* ScummVM - Graphic Adventure Engine + * + * ScummVM is the legal property of its developers, whose names + * are too numerous to list here. Please refer to the COPYRIGHT + * file distributed with this source distribution. + * + * 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. + * + */ + +/* + * This code is based on Labyrinth of Time code with assistance of + * + * Copyright (c) 1993 Terra Nova Development + * Copyright (c) 2004 The Wyrmkeep Entertainment Co. + * + */ + +#include "lab/stddefines.h" + +namespace Lab { + +/*****************************************************************************/ +/* Allocates a chunk of memory. */ +/*****************************************************************************/ +bool allocate(void **Ptr, uint32 Size) { + (*Ptr) = malloc(Size); + + if (*Ptr) + memset(*Ptr, 0, (size_t) Size); + + return (*Ptr != NULL); +} + + + + +/*****************************************************************************/ +/* Allocates a piece of chip memory. */ +/*****************************************************************************/ +bool allocatechip(void **Ptr, uint32 Size) { + return allocate(Ptr, Size); +} + +/*****************************************************************************/ +/* Allocates a chunk of dos memory. */ +/*****************************************************************************/ +bool allocatedos(void **Ptr, uint32 Size) { +#if defined(DOSCODE) + static union REGS regs; + + regs.x.eax = 0x100; + regs.x.ebx = (Size >> 4); + int386(0x31, ®s, ®s); + + if (regs.x.cflag) { + *Ptr = NULL; + return false; + } + + *Ptr = (char *)((regs.x.eax & 0xFFFF) << 4); + return (*Ptr != NULL); +#else + *Ptr = malloc(Size); + return (*Ptr != NULL); +#endif +} + +/*****************************************************************************/ +/* Deallocates a piece of memory. */ +/*****************************************************************************/ +void deallocate(void *Ptr, uint32 Size) { + if (Ptr) + free(Ptr); +} + +} // End of namespace Lab |