| | |
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| | | * After Reset the Cortex-M0+ processor is in Thread mode, |
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| | | * priority is Privileged, and the Stack is set to Main. |
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| | | ****************************************************************************** |
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| | | * |
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| | | * Redistribution and use in source and binary forms, with or without modification, |
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| | | * are permitted provided that the following conditions are met: |
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| | | * 1. Redistributions of source code must retain the above copyright notice, |
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| | | * this list of conditions and the following disclaimer. |
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| | | * 2. Redistributions in binary form must reproduce the above copyright notice, |
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| | | * this list of conditions and the following disclaimer in the documentation |
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| | | * and/or other materials provided with the distribution. |
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| | | * 3. Neither the name of STMicroelectronics nor the names of its contributors |
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| | | * may be used to endorse or promote products derived from this software |
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| | | * without specific prior written permission. |
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| | | * @attention |
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| | | * |
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| | | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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| | | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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| | | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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| | | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
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| | | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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| | | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
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| | | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
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| | | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
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| | | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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| | | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| | | * Copyright (c) 2016 STMicroelectronics. |
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| | | * All rights reserved. |
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| | | * |
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| | | * This software is licensed under terms that can be found in the LICENSE file |
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| | | * in the root directory of this software component. |
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| | | * If no LICENSE file comes with this software, it is provided AS-IS. |
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| | | * |
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| | | ****************************************************************************** |
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| | | */ |
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| | |
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| | | ldr r0, =_estack |
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| | | mov sp, r0 /* set stack pointer */ |
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| | | |
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| | | /* Call the clock system initialization function.*/ |
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| | | bl SystemInit |
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| | | |
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| | | /* Copy the data segment initializers from flash to SRAM */ |
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| | | movs r1, #0 |
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| | | b LoopCopyDataInit |
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| | | ldr r0, =_sdata |
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| | | ldr r1, =_edata |
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| | | ldr r2, =_sidata |
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| | | movs r3, #0 |
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| | | b LoopCopyDataInit |
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| | | |
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| | | CopyDataInit: |
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| | | ldr r3, =_sidata |
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| | | ldr r3, [r3, r1] |
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| | | str r3, [r0, r1] |
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| | | adds r1, r1, #4 |
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| | | ldr r4, [r2, r3] |
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| | | str r4, [r0, r3] |
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| | | adds r3, r3, #4 |
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| | | |
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| | | LoopCopyDataInit: |
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| | | ldr r0, =_sdata |
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| | | ldr r3, =_edata |
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| | | adds r2, r0, r1 |
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| | | cmp r2, r3 |
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| | | bcc CopyDataInit |
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| | | ldr r2, =_sbss |
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| | | b LoopFillZerobss |
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| | | adds r4, r0, r3 |
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| | | cmp r4, r1 |
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| | | bcc CopyDataInit |
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| | | |
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| | | /* Zero fill the bss segment. */ |
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| | | ldr r2, =_sbss |
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| | | ldr r4, =_ebss |
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| | | movs r3, #0 |
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| | | b LoopFillZerobss |
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| | | |
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| | | FillZerobss: |
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| | | movs r3, #0 |
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| | | str r3, [r2] |
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| | | adds r2, r2, #4 |
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| | | |
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| | | |
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| | | LoopFillZerobss: |
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| | | ldr r3, = _ebss |
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| | | cmp r2, r3 |
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| | | bcc FillZerobss |
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| | | cmp r2, r4 |
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| | | bcc FillZerobss |
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| | | |
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| | | /* Call the clock system intitialization function.*/ |
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| | | bl SystemInit |
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| | | |
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| | | /* Call static constructors */ |
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| | | bl __libc_init_array |
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| | | /* Call the application's entry point.*/ |
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| | |
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| | | |
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| | | |
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| | | |
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| | | /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |
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