mbed library sources. Supersedes mbed-src.
Dependents: Nucleo_Hello_Encoder BLE_iBeaconScan AM1805_DEMO DISCO-F429ZI_ExportTemplate1 ... more
targets/TARGET_NUVOTON/TARGET_M480/device/TOOLCHAIN_GCC_ARM/m480_retarget.c
- Committer:
- AnnaBridge
- Date:
- 2017-08-31
- Revision:
- 172:7d866c31b3c5
- Child:
- 187:0387e8f68319
File content as of revision 172:7d866c31b3c5:
/****************************************************************************** * @file startup_NUC472_442.c * @version V0.10 * $Revision: 11 $ * $Date: 15/09/02 10:02a $ * @brief CMSIS Cortex-M4 Core Peripheral Access Layer Source File for M480 MCU * * @note * Copyright (C) 2013~2015 Nuvoton Technology Corp. All rights reserved. *****************************************************************************/ #include "M480.h" #include <errno.h> #include "nu_miscutil.h" extern uint32_t __mbed_sbrk_start; extern uint32_t __mbed_krbs_start; #define NU_HEAP_ALIGN 32 /** * The default implementation of _sbrk() (in common/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, NUMAKER-PFM-NUC472 locates heap on external SRAM. 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 = NU_ALIGN_UP(heap_ind, NU_HEAP_ALIGN); uint32_t heap_ind_new = NU_ALIGN_UP(heap_ind_old + incr, NU_HEAP_ALIGN); if (heap_ind_new > (uint32_t) &__mbed_krbs_start) { errno = ENOMEM; return (void *) -1; } heap_ind = heap_ind_new; return (void *) heap_ind_old; }