1/* 2 * Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved. 3 * Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without modification, 6 * are permitted provided that the following conditions are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright notice, this list of 9 * conditions and the following disclaimer. 10 * 11 * 2. Redistributions in binary form must reproduce the above copyright notice, this list 12 * of conditions and the following disclaimer in the documentation and/or other materials 13 * provided with the distribution. 14 * 15 * 3. Neither the name of the copyright holder nor the names of its contributors may be used 16 * to endorse or promote products derived from this software without specific prior written 17 * permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 21 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 23 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 24 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 26 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 27 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 28 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 29 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 .syntax unified 33 .cpu cortex-m4 34 .fpu softvfp 35 .thumb 36 37.extern HalExcNMI; 38.extern HalExcHardFault; 39.extern HalExcMemFault; 40.extern HalExcBusFault; 41.extern HalExcUsageFault; 42.extern HalExcSvcCall; 43.extern HalPendSV; 44.extern SysTick_Handler; 45.global Vector_Table 46.global Reset_Handler 47 48.section .text 49.type Reset_Handler, %function 50Reset_Handler: 51 ldr r0, =__bss_start 52 ldr r1, =__bss_end 53 mov r2, #0 54 55bss_loop: 56 str r2, [r0, #0] 57 add r0, r0, #4 58 subs r3, r1, r0 59 bne bss_loop 60 61 ldr sp, =__irq_stack_top 62 b main 63.size Reset_Handler, .-Reset_Handler 64 65.type DefaultHandler, %function 66DefaultHandler: 67loop: 68 b loop 69.size DefaultHandler, .-DefaultHandler 70 71.section .Vector_Table,"a",%progbits 72.type Vector_Table, %object 73Vector_Table: 74 .word _estack 75 .word Reset_Handler 76 .word HalExcNMI 77 .word HalExcHardFault 78 .word HalExcMemFault 79 .word HalExcBusFault 80 .word HalExcUsageFault 81 .word 0 82 .word 0 83 .word 0 84 .word 0 85 .word DefaultHandler 86 .word DefaultHandler 87 .word 0 88 .word HalPendSV 89 .word SysTick_Handler 90 91.size Vector_Table, .-Vector_Table 92 93