PHung Tung / SRC_STM32F7

SPKT

Dependents:   WAV

targets/cmsis/TARGET_STM/TARGET_STM32F7/TARGET_NUCLEO_F746ZG/TOOLCHAIN_ARM_STD/sys.cpp@0:e87aa4c49e95, 2019-06-04 (annotated)

Committer:
phungductung
Date:
Tue Jun 04 21:51:46 2019 +0000
Revision:
0:e87aa4c49e95
libray

Who changed what in which revision?

UserRevisionLine numberNew contents of line
phungductung 0:e87aa4c49e95 1 /* mbed Microcontroller Library - stackheap
phungductung 0:e87aa4c49e95 2 * Setup a fixed single stack/heap memory model,
phungductung 0:e87aa4c49e95 3 * between the top of the RW/ZI region and the stackpointer
phungductung 0:e87aa4c49e95 4 *******************************************************************************
phungductung 0:e87aa4c49e95 5 * Copyright (c) 2014, STMicroelectronics
phungductung 0:e87aa4c49e95 6 * All rights reserved.
phungductung 0:e87aa4c49e95 7 *
phungductung 0:e87aa4c49e95 8 * Redistribution and use in source and binary forms, with or without
phungductung 0:e87aa4c49e95 9 * modification, are permitted provided that the following conditions are met:
phungductung 0:e87aa4c49e95 10 *
phungductung 0:e87aa4c49e95 11 * 1. Redistributions of source code must retain the above copyright notice,
phungductung 0:e87aa4c49e95 12 * this list of conditions and the following disclaimer.
phungductung 0:e87aa4c49e95 13 * 2. Redistributions in binary form must reproduce the above copyright notice,
phungductung 0:e87aa4c49e95 14 * this list of conditions and the following disclaimer in the documentation
phungductung 0:e87aa4c49e95 15 * and/or other materials provided with the distribution.
phungductung 0:e87aa4c49e95 16 * 3. Neither the name of STMicroelectronics nor the names of its contributors
phungductung 0:e87aa4c49e95 17 * may be used to endorse or promote products derived from this software
phungductung 0:e87aa4c49e95 18 * without specific prior written permission.
phungductung 0:e87aa4c49e95 19 *
phungductung 0:e87aa4c49e95 20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
phungductung 0:e87aa4c49e95 21 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
phungductung 0:e87aa4c49e95 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
phungductung 0:e87aa4c49e95 23 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
phungductung 0:e87aa4c49e95 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
phungductung 0:e87aa4c49e95 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
phungductung 0:e87aa4c49e95 26 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
phungductung 0:e87aa4c49e95 27 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
phungductung 0:e87aa4c49e95 28 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
phungductung 0:e87aa4c49e95 29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
phungductung 0:e87aa4c49e95 30 *******************************************************************************
phungductung 0:e87aa4c49e95 31 */
phungductung 0:e87aa4c49e95 32
phungductung 0:e87aa4c49e95 33 #ifdef __cplusplus
phungductung 0:e87aa4c49e95 34 extern "C" {
phungductung 0:e87aa4c49e95 35 #endif
phungductung 0:e87aa4c49e95 36
phungductung 0:e87aa4c49e95 37 #include <rt_misc.h>
phungductung 0:e87aa4c49e95 38 #include <stdint.h>
phungductung 0:e87aa4c49e95 39
phungductung 0:e87aa4c49e95 40 extern char Image$$RW_IRAM1$$ZI$$Limit[];
phungductung 0:e87aa4c49e95 41
phungductung 0:e87aa4c49e95 42 extern __value_in_regs struct __initial_stackheap __user_setup_stackheap(uint32_t R0, uint32_t R1, uint32_t R2, uint32_t R3) {
phungductung 0:e87aa4c49e95 43 uint32_t zi_limit = (uint32_t)Image$$RW_IRAM1$$ZI$$Limit;
phungductung 0:e87aa4c49e95 44 uint32_t sp_limit = __current_sp();
phungductung 0:e87aa4c49e95 45
phungductung 0:e87aa4c49e95 46 zi_limit = (zi_limit + 7) & ~0x7; // ensure zi_limit is 8-byte aligned
phungductung 0:e87aa4c49e95 47
phungductung 0:e87aa4c49e95 48 struct __initial_stackheap r;
phungductung 0:e87aa4c49e95 49 r.heap_base = zi_limit;
phungductung 0:e87aa4c49e95 50 r.heap_limit = sp_limit;
phungductung 0:e87aa4c49e95 51 return r;
phungductung 0:e87aa4c49e95 52 }
phungductung 0:e87aa4c49e95 53
phungductung 0:e87aa4c49e95 54 #ifdef __cplusplus
phungductung 0:e87aa4c49e95 55 }
phungductung 0:e87aa4c49e95 56 #endif