2 *****************************************************************************
6 ** Author : Auto-generated by STM32CubeIDE
8 ** Abstract : STM32CubeIDE Minimal System Memory calls file
10 ** For more information about which c-functions
11 ** need which of these lowlevel functions
12 ** please consult the Newlib libc-manual
14 ** Environment : STM32CubeIDE MCU
16 ** Distribution: The file is distributed as is, without any warranty
19 *****************************************************************************
21 ** <h2><center>© COPYRIGHT(c) 2018 STMicroelectronics</center></h2>
23 ** Redistribution and use in source and binary forms, with or without modification,
24 ** are permitted provided that the following conditions are met:
25 ** 1. Redistributions of source code must retain the above copyright notice,
26 ** this list of conditions and the following disclaimer.
27 ** 2. Redistributions in binary form must reproduce the above copyright notice,
28 ** this list of conditions and the following disclaimer in the documentation
29 ** and/or other materials provided with the distribution.
30 ** 3. Neither the name of STMicroelectronics nor the names of its contributors
31 ** may be used to endorse or promote products derived from this software
32 ** without specific prior written permission.
34 ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
35 ** AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
36 ** IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
37 ** DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
38 ** FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
39 ** DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
40 ** SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
41 ** CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
42 ** OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
43 ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
46 *****************************************************************************
55 register char * stack_ptr asm("sp");
61 Increase program data space. Malloc and related functions depend on this
63 caddr_t _sbrk(int incr)
65 extern char end asm("end");
66 static char *heap_end;
72 prev_heap_end = heap_end;
73 if (heap_end + incr > stack_ptr)
81 return (caddr_t) prev_heap_end;