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targets/cmsis/TARGET_STM/TARGET_NUCLEO_L053R8/TOOLCHAIN_ARM_STD/sys.cpp@181:a4cbdfbbd2f4, 2014-05-07 (annotated)

Committer:: mbed_official
Date:: Wed May 07 13:15:08 2014 +0100
Revision:: 181:a4cbdfbbd2f4

Synchronized with git revision 7751e759576c6fd68deccb81ea82bac19ed41745



Full URL: https://github.com/mbedmicro/mbed/commit/7751e759576c6fd68deccb81ea82bac19ed41745/

Who changed what in which revision?

User	Revision	Line number	New contents of line
mbed_official	181:a4cbdfbbd2f4	1	/* mbed Microcontroller Library - stackheap
mbed_official	181:a4cbdfbbd2f4	2	* Setup a fixed single stack/heap memory model,
mbed_official	181:a4cbdfbbd2f4	3	* between the top of the RW/ZI region and the stackpointer
mbed_official	181:a4cbdfbbd2f4	4	*******************************************************************************
mbed_official	181:a4cbdfbbd2f4	5	* Copyright (c) 2014, STMicroelectronics
mbed_official	181:a4cbdfbbd2f4	6	* All rights reserved.
mbed_official	181:a4cbdfbbd2f4	7	*
mbed_official	181:a4cbdfbbd2f4	8	* Redistribution and use in source and binary forms, with or without
mbed_official	181:a4cbdfbbd2f4	9	* modification, are permitted provided that the following conditions are met:
mbed_official	181:a4cbdfbbd2f4	10	*
mbed_official	181:a4cbdfbbd2f4	11	* 1. Redistributions of source code must retain the above copyright notice,
mbed_official	181:a4cbdfbbd2f4	12	* this list of conditions and the following disclaimer.
mbed_official	181:a4cbdfbbd2f4	13	* 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official	181:a4cbdfbbd2f4	14	* this list of conditions and the following disclaimer in the documentation
mbed_official	181:a4cbdfbbd2f4	15	* and/or other materials provided with the distribution.
mbed_official	181:a4cbdfbbd2f4	16	* 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official	181:a4cbdfbbd2f4	17	* may be used to endorse or promote products derived from this software
mbed_official	181:a4cbdfbbd2f4	18	* without specific prior written permission.
mbed_official	181:a4cbdfbbd2f4	19	*
mbed_official	181:a4cbdfbbd2f4	20	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official	181:a4cbdfbbd2f4	21	* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official	181:a4cbdfbbd2f4	22	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official	181:a4cbdfbbd2f4	23	* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official	181:a4cbdfbbd2f4	24	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official	181:a4cbdfbbd2f4	25	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official	181:a4cbdfbbd2f4	26	* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official	181:a4cbdfbbd2f4	27	* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official	181:a4cbdfbbd2f4	28	* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official	181:a4cbdfbbd2f4	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official	181:a4cbdfbbd2f4	30	*******************************************************************************
mbed_official	181:a4cbdfbbd2f4	31	*/
mbed_official	181:a4cbdfbbd2f4	32
mbed_official	181:a4cbdfbbd2f4	33	#ifdef __cplusplus
mbed_official	181:a4cbdfbbd2f4	34	extern "C" {
mbed_official	181:a4cbdfbbd2f4	35	#endif
mbed_official	181:a4cbdfbbd2f4	36
mbed_official	181:a4cbdfbbd2f4	37	#include <rt_misc.h>
mbed_official	181:a4cbdfbbd2f4	38	#include <stdint.h>
mbed_official	181:a4cbdfbbd2f4	39
mbed_official	181:a4cbdfbbd2f4	40	extern char Image$$RW_IRAM1$$ZI$$Limit[];
mbed_official	181:a4cbdfbbd2f4	41
mbed_official	181:a4cbdfbbd2f4	42	extern __value_in_regs struct __initial_stackheap __user_setup_stackheap(uint32_t R0, uint32_t R1, uint32_t R2, uint32_t R3) {
mbed_official	181:a4cbdfbbd2f4	43	uint32_t zi_limit = (uint32_t)Image$$RW_IRAM1$$ZI$$Limit;
mbed_official	181:a4cbdfbbd2f4	44	uint32_t sp_limit = __current_sp();
mbed_official	181:a4cbdfbbd2f4	45
mbed_official	181:a4cbdfbbd2f4	46	zi_limit = (zi_limit + 7) & ~0x7; // ensure zi_limit is 8-byte aligned
mbed_official	181:a4cbdfbbd2f4	47
mbed_official	181:a4cbdfbbd2f4	48	struct __initial_stackheap r;
mbed_official	181:a4cbdfbbd2f4	49	r.heap_base = zi_limit;
mbed_official	181:a4cbdfbbd2f4	50	r.heap_limit = sp_limit;
mbed_official	181:a4cbdfbbd2f4	51	return r;
mbed_official	181:a4cbdfbbd2f4	52	}
mbed_official	181:a4cbdfbbd2f4	53
mbed_official	181:a4cbdfbbd2f4	54	#ifdef __cplusplus
mbed_official	181:a4cbdfbbd2f4	55	}
mbed_official	181:a4cbdfbbd2f4	56	#endif