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January 28, 2015 20:06
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UNSUPPORTED debug_heap() implementation for XC32 v1.3x
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| /*------------------------------------------------------------------------- | |
| * !! UNSUPPORTED !! - debug_heap() function for MPLAB XC32 v1.3x | |
| * | |
| * Copyright (c) 2014, Microchip Technology Inc. and its subsidiaries ("Microchip") | |
| * All rights reserved. | |
| * | |
| * This software is developed by Microchip Technology Inc. and its | |
| * subsidiaries ("Microchip"). | |
| * | |
| * Redistribution and use in source and binary forms, with or without | |
| * modification, are permitted provided that the following conditions are | |
| * met: | |
| * | |
| * 1. Redistributions of source code must retain the above copyright | |
| * notice, this list of conditions and the following disclaimer. | |
| * 2. Redistributions in binary form must reproduce the above | |
| * copyright notice, this list of conditions and the following | |
| * disclaimer in the documentation and/or other materials provided | |
| * with the distribution. | |
| * 3. Microchip's name may not be used to endorse or promote products | |
| * derived from this software without specific prior written | |
| * permission. | |
| * | |
| * THIS SOFTWARE IS PROVIDED BY MICROCHIP "AS IS" AND ANY EXPRESS OR IMPLIED | |
| * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
| * MERCHANTABILITY AND FITNESS FOR PURPOSE ARE DISCLAIMED. IN NO EVENT | |
| * SHALL MICROCHIP BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING BUT NOT LIMITED TO | |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA OR PROFITS; | |
| * OR BUSINESS INTERRUPTION) HOWSOEVER CAUSED AND ON ANY THEORY OF LIABILITY, | |
| * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR | |
| * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF | |
| * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| * | |
| */ | |
| #include <stdio.h> | |
| #include <stdlib.h> | |
| #include <string.h> | |
| typedef void * VOIDPTR; | |
| extern void * sbrk (int n); | |
| struct store | |
| { | |
| struct store * ptr; | |
| char flag; | |
| }; | |
| extern struct store __allocs[2]; | |
| extern struct store * __allocp; | |
| extern struct store * __alloct; | |
| extern struct store __allocx; | |
| extern unsigned char __attribute__((section("__linkerdefined"))) _heap; | |
| extern unsigned char __attribute__((section("__linkerdefined"))) _min_heap_size; | |
| void debug_heap() | |
| { | |
| struct store *p, *q; | |
| int i, used = 0, free = 0; | |
| for(p = &__allocs[0] ; p && p!= __alloct ; p = q) { | |
| q = p->ptr; | |
| if(((int)p >= (int)&_heap) && (int)p <= (int)((char*)(&_heap)+(int)(&_min_heap_size))){ | |
| fprintf(stderr, | |
| "*** %4.4x %5d %s\n", | |
| (unsigned)p, | |
| ((unsigned)q!=((unsigned)((char*)(&_heap)+(int)(&_min_heap_size))-4)) ? | |
| (i=(unsigned)q-(unsigned)p) : | |
| (i=(unsigned)q-(unsigned)p+4), | |
| ((*p).flag & 1) ? "BUSY" : "FREE"); | |
| if(((*p).flag & 1)) | |
| used += i; | |
| else | |
| free += i; | |
| } | |
| } | |
| fprintf(stderr, "*** %d used, %d free, %4.4x end\n\n", | |
| used, free, (unsigned)__alloct); | |
| } |
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yup, in XC32 2.x alloct and allocs cannot be found ...