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Diffstat (limited to 'thirdparty/nRF5_SDK_15.0.0_a53641a/modules/nrfx/mdk/gcc_startup_nrf51.S')
| -rw-r--r-- | thirdparty/nRF5_SDK_15.0.0_a53641a/modules/nrfx/mdk/gcc_startup_nrf51.S | 298 |
1 files changed, 298 insertions, 0 deletions
diff --git a/thirdparty/nRF5_SDK_15.0.0_a53641a/modules/nrfx/mdk/gcc_startup_nrf51.S b/thirdparty/nRF5_SDK_15.0.0_a53641a/modules/nrfx/mdk/gcc_startup_nrf51.S new file mode 100644 index 0000000..3322af7 --- /dev/null +++ b/thirdparty/nRF5_SDK_15.0.0_a53641a/modules/nrfx/mdk/gcc_startup_nrf51.S @@ -0,0 +1,298 @@ +/* + +Copyright (c) 2009-2018 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. + +NOTICE: This file has been modified by Nordic Semiconductor ASA. + +*/ + + .syntax unified + .arch armv6-m + +#ifdef __STARTUP_CONFIG +#include "startup_config.h" +#ifndef __STARTUP_CONFIG_STACK_ALIGNEMENT +#define __STARTUP_CONFIG_STACK_ALIGNEMENT 3 +#endif +#endif + + .section .stack +#if defined(__STARTUP_CONFIG) + .align __STARTUP_CONFIG_STACK_ALIGNEMENT + .equ Stack_Size, __STARTUP_CONFIG_STACK_SIZE +#elif defined(__STACK_SIZE) + .align 3 + .equ Stack_Size, __STACK_SIZE +#else + .align 3 + .equ Stack_Size, 2048 +#endif + .globl __StackTop + .globl __StackLimit +__StackLimit: + .space Stack_Size + .size __StackLimit, . - __StackLimit +__StackTop: + .size __StackTop, . - __StackTop + + .section .heap + .align 3 +#if defined(__STARTUP_CONFIG) + .equ Heap_Size, __STARTUP_CONFIG_HEAP_SIZE +#elif defined(__HEAP_SIZE) + .equ Heap_Size, __HEAP_SIZE +#else + .equ Heap_Size, 2048 +#endif + .globl __HeapBase + .globl __HeapLimit +__HeapBase: + .if Heap_Size + .space Heap_Size + .endif + .size __HeapBase, . - __HeapBase +__HeapLimit: + .size __HeapLimit, . - __HeapLimit + + .section .isr_vector + .align 2 + .globl __isr_vector +__isr_vector: + .long __StackTop /* Top of Stack */ + .long Reset_Handler + .long NMI_Handler + .long HardFault_Handler + .long 0 /*Reserved */ + .long 0 /*Reserved */ + .long 0 /*Reserved */ + .long 0 /*Reserved */ + .long 0 /*Reserved */ + .long 0 /*Reserved */ + .long 0 /*Reserved */ + .long SVC_Handler + .long 0 /*Reserved */ + .long 0 /*Reserved */ + .long PendSV_Handler + .long SysTick_Handler + + /* External Interrupts */ + .long POWER_CLOCK_IRQHandler + .long RADIO_IRQHandler + .long UART0_IRQHandler + .long SPI0_TWI0_IRQHandler + .long SPI1_TWI1_IRQHandler + .long 0 /*Reserved */ + .long GPIOTE_IRQHandler + .long ADC_IRQHandler + .long TIMER0_IRQHandler + .long TIMER1_IRQHandler + .long TIMER2_IRQHandler + .long RTC0_IRQHandler + .long TEMP_IRQHandler + .long RNG_IRQHandler + .long ECB_IRQHandler + .long CCM_AAR_IRQHandler + .long WDT_IRQHandler + .long RTC1_IRQHandler + .long QDEC_IRQHandler + .long LPCOMP_IRQHandler + .long SWI0_IRQHandler + .long SWI1_IRQHandler + .long SWI2_IRQHandler + .long SWI3_IRQHandler + .long SWI4_IRQHandler + .long SWI5_IRQHandler + .long 0 /*Reserved */ + .long 0 /*Reserved */ + .long 0 /*Reserved */ + .long 0 /*Reserved */ + .long 0 /*Reserved */ + .long 0 /*Reserved */ + + .size __isr_vector, . - __isr_vector + +/* Reset Handler */ + + .equ NRF_POWER_RAMON_ADDRESS, 0x40000524 + .equ NRF_POWER_RAMONB_ADDRESS, 0x40000554 + .equ NRF_POWER_RAMONx_RAMxON_ONMODE_Msk, 0x3 + + .text + .thumb + .thumb_func + .align 1 + .globl Reset_Handler + .type Reset_Handler, %function +Reset_Handler: + + MOVS R1, #NRF_POWER_RAMONx_RAMxON_ONMODE_Msk + + LDR R0, =NRF_POWER_RAMON_ADDRESS + LDR R2, [R0] + ORRS R2, R1 + STR R2, [R0] + + LDR R0, =NRF_POWER_RAMONB_ADDRESS + LDR R2, [R0] + ORRS R2, R1 + STR R2, [R0] + +/* Loop to copy data from read only memory to RAM. + * The ranges of copy from/to are specified by following symbols: + * __etext: LMA of start of the section to copy from. Usually end of text + * __data_start__: VMA of start of the section to copy to. + * __bss_start__: VMA of end of the section to copy to. Normally __data_end__ is used, but by using __bss_start__ + * the user can add their own initialized data section before BSS section with the INTERT AFTER command. + * + * All addresses must be aligned to 4 bytes boundary. + */ + ldr r1, =__etext + ldr r2, =__data_start__ + ldr r3, =__bss_start__ + + subs r3, r2 + ble .L_loop1_done + +.L_loop1: + subs r3, #4 + ldr r0, [r1,r3] + str r0, [r2,r3] + bgt .L_loop1 + +.L_loop1_done: + +/* This part of work usually is done in C library startup code. Otherwise, + * define __STARTUP_CLEAR_BSS to enable it in this startup. This section + * clears the RAM where BSS data is located. + * + * The BSS section is specified by following symbols + * __bss_start__: start of the BSS section. + * __bss_end__: end of the BSS section. + * + * All addresses must be aligned to 4 bytes boundary. + */ +#ifdef __STARTUP_CLEAR_BSS + ldr r1, =__bss_start__ + ldr r2, =__bss_end__ + + movs r0, 0 + + subs r2, r1 + ble .L_loop3_done + +.L_loop3: + subs r2, #4 + str r0, [r1, r2] + bgt .L_loop3 + +.L_loop3_done: +#endif /* __STARTUP_CLEAR_BSS */ + +/* Execute SystemInit function. */ + bl SystemInit + +/* Call _start function provided by libraries. + * If those libraries are not accessible, define __START as your entry point. + */ +#ifndef __START +#define __START _start +#endif + bl __START + + .pool + .size Reset_Handler,.-Reset_Handler + + .section ".text" + + +/* Dummy Exception Handlers (infinite loops which can be modified) */ + + .weak NMI_Handler + .type NMI_Handler, %function +NMI_Handler: + b . + .size NMI_Handler, . - NMI_Handler + + + .weak HardFault_Handler + .type HardFault_Handler, %function +HardFault_Handler: + b . + .size HardFault_Handler, . - HardFault_Handler + + + .weak SVC_Handler + .type SVC_Handler, %function +SVC_Handler: + b . + .size SVC_Handler, . - SVC_Handler + + + .weak PendSV_Handler + .type PendSV_Handler, %function +PendSV_Handler: + b . + .size PendSV_Handler, . - PendSV_Handler + + + .weak SysTick_Handler + .type SysTick_Handler, %function +SysTick_Handler: + b . + .size SysTick_Handler, . - SysTick_Handler + + +/* IRQ Handlers */ + + .globl Default_Handler + .type Default_Handler, %function +Default_Handler: + b . + .size Default_Handler, . - Default_Handler + + .macro IRQ handler + .weak \handler + .set \handler, Default_Handler + .endm + + IRQ POWER_CLOCK_IRQHandler + IRQ RADIO_IRQHandler + IRQ UART0_IRQHandler + IRQ SPI0_TWI0_IRQHandler + IRQ SPI1_TWI1_IRQHandler + IRQ GPIOTE_IRQHandler + IRQ ADC_IRQHandler + IRQ TIMER0_IRQHandler + IRQ TIMER1_IRQHandler + IRQ TIMER2_IRQHandler + IRQ RTC0_IRQHandler + IRQ TEMP_IRQHandler + IRQ RNG_IRQHandler + IRQ ECB_IRQHandler + IRQ CCM_AAR_IRQHandler + IRQ WDT_IRQHandler + IRQ RTC1_IRQHandler + IRQ QDEC_IRQHandler + IRQ LPCOMP_IRQHandler + IRQ SWI0_IRQHandler + IRQ SWI1_IRQHandler + IRQ SWI2_IRQHandler + IRQ SWI3_IRQHandler + IRQ SWI4_IRQHandler + IRQ SWI5_IRQHandler + + .end |