Amit Gandhi / sensen_copy_2

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targets/TARGET_STM/TARGET_STM32L0/TARGET_NUCLEO_L053R8/device/TOOLCHAIN_ARM_STD/sys.cpp@178:c26431f84b0d, 2017-11-09 (annotated)

Committer:
amithy
Date:
Thu Nov 09 22:14:37 2017 +0000
Revision:
178:c26431f84b0d
Parent:
149:156823d33999 
test export

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 144:ef7eb2e8f9f7 1 /* mbed Microcontroller Library - stackheap
<> 144:ef7eb2e8f9f7 2 * Setup a fixed single stack/heap memory model,
<> 144:ef7eb2e8f9f7 3 * between the top of the RW/ZI region and the stackpointer
<> 144:ef7eb2e8f9f7 4 *******************************************************************************
<> 144:ef7eb2e8f9f7 5 * Copyright (c) 2014, STMicroelectronics
<> 144:ef7eb2e8f9f7 6 * All rights reserved.
<> 144:ef7eb2e8f9f7 7 *
<> 144:ef7eb2e8f9f7 8 * Redistribution and use in source and binary forms, with or without
<> 144:ef7eb2e8f9f7 9 * modification, are permitted provided that the following conditions are met:
<> 144:ef7eb2e8f9f7 10 *
<> 144:ef7eb2e8f9f7 11 * 1. Redistributions of source code must retain the above copyright notice,
<> 144:ef7eb2e8f9f7 12 * this list of conditions and the following disclaimer.
<> 144:ef7eb2e8f9f7 13 * 2. Redistributions in binary form must reproduce the above copyright notice,
<> 144:ef7eb2e8f9f7 14 * this list of conditions and the following disclaimer in the documentation
<> 144:ef7eb2e8f9f7 15 * and/or other materials provided with the distribution.
<> 144:ef7eb2e8f9f7 16 * 3. Neither the name of STMicroelectronics nor the names of its contributors
<> 144:ef7eb2e8f9f7 17 * may be used to endorse or promote products derived from this software
<> 144:ef7eb2e8f9f7 18 * without specific prior written permission.
<> 144:ef7eb2e8f9f7 19 *
<> 144:ef7eb2e8f9f7 20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
<> 144:ef7eb2e8f9f7 21 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
<> 144:ef7eb2e8f9f7 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
<> 144:ef7eb2e8f9f7 23 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
<> 144:ef7eb2e8f9f7 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
<> 144:ef7eb2e8f9f7 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
<> 144:ef7eb2e8f9f7 26 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
<> 144:ef7eb2e8f9f7 27 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
<> 144:ef7eb2e8f9f7 28 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
<> 144:ef7eb2e8f9f7 29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
<> 144:ef7eb2e8f9f7 30 *******************************************************************************
<> 144:ef7eb2e8f9f7 31 */
<> 144:ef7eb2e8f9f7 32
<> 144:ef7eb2e8f9f7 33 #ifdef __cplusplus
<> 144:ef7eb2e8f9f7 34 extern "C" {
<> 144:ef7eb2e8f9f7 35 #endif
<> 144:ef7eb2e8f9f7 36
<> 144:ef7eb2e8f9f7 37 #include <rt_misc.h>
<> 144:ef7eb2e8f9f7 38 #include <stdint.h>
<> 144:ef7eb2e8f9f7 39
<> 144:ef7eb2e8f9f7 40 extern char Image$$RW_IRAM1$$ZI$$Limit[];
<> 144:ef7eb2e8f9f7 41
<> 144:ef7eb2e8f9f7 42 extern __value_in_regs struct __initial_stackheap __user_setup_stackheap(uint32_t R0, uint32_t R1, uint32_t R2, uint32_t R3) {
<> 144:ef7eb2e8f9f7 43 uint32_t zi_limit = (uint32_t)Image$$RW_IRAM1$$ZI$$Limit;
<> 144:ef7eb2e8f9f7 44 uint32_t sp_limit = __current_sp();
<> 144:ef7eb2e8f9f7 45
<> 144:ef7eb2e8f9f7 46 zi_limit = (zi_limit + 7) & ~0x7; // ensure zi_limit is 8-byte aligned
<> 144:ef7eb2e8f9f7 47
<> 144:ef7eb2e8f9f7 48 struct __initial_stackheap r;
<> 144:ef7eb2e8f9f7 49 r.heap_base = zi_limit;
<> 144:ef7eb2e8f9f7 50 r.heap_limit = sp_limit;
<> 144:ef7eb2e8f9f7 51 return r;
<> 144:ef7eb2e8f9f7 52 }
<> 144:ef7eb2e8f9f7 53
<> 144:ef7eb2e8f9f7 54 #ifdef __cplusplus
<> 144:ef7eb2e8f9f7 55 }
<> 144:ef7eb2e8f9f7 56 #endif