mbed library sources. Supersedes mbed-src.
Dependents: Nucleo_Hello_Encoder BLE_iBeaconScan AM1805_DEMO DISCO-F429ZI_ExportTemplate1 ... more
targets/TARGET_STM/TARGET_STM32L4/l4_retarget.c
- Committer:
- AnnaBridge
- Date:
- 2019-02-20
- Revision:
- 189:f392fc9709a3
- Parent:
- 188:bcfe06ba3d64
File content as of revision 189:f392fc9709a3:
/** ****************************************************************************** * @file l4_retarget.c * @author MCD Application Team * @brief CMSIS Cortex-M4 Core Peripheral Access Layer Source File for STM32L475xG ****************************************************************************** * @attention * * <h2><center>© COPYRIGHT(c) 2018 STMicroelectronics</center></h2> * * 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. Neither the name of STMicroelectronics nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS 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) HOWEVER * 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. * ****************************************************************************** */ #if (defined(TWO_RAM_REGIONS) && defined(__GNUC__) && !defined(__CC_ARM) && !defined(__ARMCC_VERSION)) #include <errno.h> #include "stm32l4xx.h" extern uint32_t __mbed_sbrk_start; extern uint32_t __mbed_krbs_start; /** * The default implementation of _sbrk() (in platform/mbed_retarget.cpp) for GCC_ARM requires one-region model (heap and * stack share one region), which doesn't fit two-region model (heap and stack are two distinct regions), for example, * STM32L475xG locates heap on SRAM1 and stack on SRAM2. * Define __wrap__sbrk() to override the default _sbrk(). It is expected to get called through gcc * hooking mechanism ('-Wl,--wrap,_sbrk') or in _sbrk(). */ void *__wrap__sbrk(int incr) { static uint32_t heap_ind = (uint32_t) &__mbed_sbrk_start; uint32_t heap_ind_old = heap_ind; uint32_t heap_ind_new = heap_ind_old + incr; if (heap_ind_new > (uint32_t)&__mbed_krbs_start) { errno = ENOMEM; return (void *) - 1; } heap_ind = heap_ind_new; return (void *) heap_ind_old; } #endif /* GCC_ARM toolchain && TWO_RAM_REGIONS*/