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/**************************************************************************//**
* @file startup_ARMCM3.S
* @brief CMSIS-Core(M) Device Startup File for Cortex-M3 Device
* @version V2.2.0
* @date 26. May 2021
******************************************************************************/
/*
* Copyright (c) 2009-2021 Arm Limited. All rights reserved.
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the License); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
.syntax unified
.arch armv7-m
.section .vectors
.align 2
.globl __Vectors
.globl __Vectors_End
.globl __Vectors_Size
__Vectors:
.long __StackTop /* Top of Stack */
.long Reset_Handler /* Reset Handler */
.long NMI_Handler /* -14 NMI Handler */
.long HardFault_Handler /* -13 Hard Fault Handler */
.long MemManage_Handler /* -12 MPU Fault Handler */
.long BusFault_Handler /* -11 Bus Fault Handler */
.long UsageFault_Handler /* -10 Usage Fault Handler */
.long 0 /* Reserved */
.long 0 /* Reserved */
.long 0 /* Reserved */
.long 0 /* Reserved */
.long SVC_Handler /* -5 SVC Handler */
.long DebugMon_Handler /* -4 Debug Monitor Handler */
.long 0 /* Reserved */
.long PendSV_Handler /* -2 PendSV Handler */
.long SysTick_Handler /* -1 SysTick Handler */
/* Interrupts */
.long Interrupt0_Handler /* 0 Interrupt 0 */
.long Interrupt1_Handler /* 1 Interrupt 1 */
.long Interrupt2_Handler /* 2 Interrupt 2 */
.long Interrupt3_Handler /* 3 Interrupt 3 */
.long Interrupt4_Handler /* 4 Interrupt 4 */
.long Interrupt5_Handler /* 5 Interrupt 5 */
.long Interrupt6_Handler /* 6 Interrupt 6 */
.long Interrupt7_Handler /* 7 Interrupt 7 */
.long Interrupt8_Handler /* 8 Interrupt 8 */
.long Interrupt9_Handler /* 9 Interrupt 9 */
.space (214 * 4) /* Interrupts 10 .. 224 are left out */
__Vectors_End:
.equ __Vectors_Size, __Vectors_End - __Vectors
.size __Vectors, . - __Vectors
.thumb
.section .text
.align 2
.thumb_func
.type Reset_Handler, %function
.globl Reset_Handler
.fnstart
Reset_Handler:
bl SystemInit
ldr r4, =__copy_table_start__
ldr r5, =__copy_table_end__
.L_loop0:
cmp r4, r5
bge .L_loop0_done
ldr r1, [r4] /* source address */
ldr r2, [r4, #4] /* destination address */
ldr r3, [r4, #8] /* word count */
lsls r3, r3, #2 /* byte count */
.L_loop0_0:
subs r3, #4 /* decrement byte count */
ittt ge
ldrge r0, [r1, r3]
strge r0, [r2, r3]
bge .L_loop0_0
adds r4, #12
b .L_loop0
.L_loop0_done:
ldr r3, =__zero_table_start__
ldr r4, =__zero_table_end__
.L_loop2:
cmp r3, r4
bge .L_loop2_done
ldr r1, [r3] /* destination address */
ldr r2, [r3, #4] /* word count */
lsls r2, r2, #2 /* byte count */
movs r0, 0
.L_loop2_0:
subs r2, #4 /* decrement byte count */
itt ge
strge r0, [r1, r2]
bge .L_loop2_0
adds r3, #8
b .L_loop2
.L_loop2_done:
bl _start
.fnend
.size Reset_Handler, . - Reset_Handler
/* The default macro is not used for HardFault_Handler
* because this results in a poor debug illusion.
*/
.thumb_func
.type HardFault_Handler, %function
.weak HardFault_Handler
.fnstart
HardFault_Handler:
b .
.fnend
.size HardFault_Handler, . - HardFault_Handler
.thumb_func
.type Default_Handler, %function
.weak Default_Handler
.fnstart
Default_Handler:
b .
.fnend
.size Default_Handler, . - Default_Handler
/* Macro to define default exception/interrupt handlers.
* Default handler are weak symbols with an endless loop.
* They can be overwritten by real handlers.
*/
.macro Set_Default_Handler Handler_Name
.weak \Handler_Name
.set \Handler_Name, Default_Handler
.endm
/* Default exception/interrupt handler */
Set_Default_Handler NMI_Handler
Set_Default_Handler MemManage_Handler
Set_Default_Handler BusFault_Handler
Set_Default_Handler UsageFault_Handler
Set_Default_Handler SVC_Handler
Set_Default_Handler DebugMon_Handler
Set_Default_Handler PendSV_Handler
Set_Default_Handler SysTick_Handler
Set_Default_Handler Interrupt0_Handler
Set_Default_Handler Interrupt1_Handler
Set_Default_Handler Interrupt2_Handler
Set_Default_Handler Interrupt3_Handler
Set_Default_Handler Interrupt4_Handler
Set_Default_Handler Interrupt5_Handler
Set_Default_Handler Interrupt6_Handler
Set_Default_Handler Interrupt7_Handler
Set_Default_Handler Interrupt8_Handler
Set_Default_Handler Interrupt9_Handler
.end
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