1 /*-------------------------------------------------------------------------
2 calloc.c - allocate cleared memory.
4 Copyright (C) 2004 - Maarten Brock, sourceforge.brock@dse.nl
6 This library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
11 This library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public
17 License along with this library; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 -------------------------------------------------------------------------*/
25 //--------------------------------------------------------------------
26 //calloc function implementation for embedded system
27 //Non-ANSI keywords are C51 specific.
28 // __xdata - variable in external memory (just RAM)
29 //--------------------------------------------------------------------
31 #if _SDCC_MALLOC_TYPE_MLH
35 typedef struct _MEMHEADER MEMHEADER;
45 #define HEADER_SIZE (sizeof(MEMHEADER)-sizeof(char))
49 #define MEMHEADER struct MAH// Memory Allocation Header
53 MEMHEADER __xdata * next;
58 #define HEADER_SIZE sizeof(MEMHEADER)
62 void __xdata * calloc (size_t nmemb, size_t size)
64 register void __xdata * ptr;
66 ptr = malloc(nmemb * size);
69 memset(ptr, 0, nmemb * size);