cb212d0c3f
Added `__attribute__((weak))` weak linking annotation to new and delete operator overrides to allow for user-defined overrides.
85 lines
1.8 KiB
C++
85 lines
1.8 KiB
C++
/*
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Copyright (c) 2014 Arduino. All right reserved.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <stdlib.h>
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#include "rtos.h"
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#include <errno.h>
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#include <sys/stat.h>
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#include <malloc.h>
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__attribute__((weak))
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void *operator new(size_t size) {
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return rtos_malloc(size);
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}
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__attribute__((weak))
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void *operator new[](size_t size) {
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return rtos_malloc(size);
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}
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__attribute__((weak))
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void operator delete(void * ptr) {
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rtos_free(ptr);
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}
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__attribute__((weak))
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void operator delete[](void * ptr) {
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rtos_free(ptr);
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}
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__attribute__((weak))
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void operator delete(void * ptr, unsigned int) {
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rtos_free(ptr);
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}
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__attribute__((weak))
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void operator delete[](void * ptr, unsigned int) {
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rtos_free(ptr);
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}
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extern "C"
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{
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// defined in linker script
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extern unsigned char __HeapBase[];
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extern unsigned char __HeapLimit[];
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static unsigned char *sbrk_heap_top = __HeapBase;
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__attribute__((used))
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caddr_t _sbrk( int incr )
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{
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unsigned char *prev_heap;
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if ( sbrk_heap_top + incr > __HeapLimit )
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{
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/* Out of dynamic memory heap space */
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errno = ENOMEM;
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return (caddr_t) -1;
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}
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prev_heap = sbrk_heap_top;
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sbrk_heap_top += incr;
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return (caddr_t) prev_heap;
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}
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}
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