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2019-8-28 20:17 |
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签到天数: 9 天 连续签到: 1 天 [LV.3]偶尔看看II
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大家都晒过板子了，我也就不再晒了，在这里送上对GD32启动代码的分析。
;/**
; ******************************************************************************
; * @file startup_gd32f1x0.s
; * @author MCU SD
; * @version V1.0.1
; * @date 6-Sep-2014
; * @brief GD32F1x0 startup code.
; ******************************************************************************
; */
;/* <<< Use Configuration Wizard in Context Menu >>> */
; Amount of memory (in bytes) allocated for Stack and Heap
; Tailor those values to your application needs
;// <h> Stack Configuration
;// <o> Stack Size (in Bytes) <0-8192:8>
;// </h>
Stack_Size EQU 0x400 ;¶¨ÒåÕ»¿Õ¼äµÄ´óС£¬0x400 = 1k byte
AREA STACK, NOINIT, READWRITE, ALIGN = 3
Stack_Mem SPACE Stack_Size ;¿ª±ÙÒ»¶Î´óСΪStack_SizeµÄÄÚ´æ¿Õ¼ä×÷Ϊջ
__initial_sp ;±êºÅ__initial_sp£¬±íʾջ¶¥£¨ÏòÏÂÉú³¤µÄÂúջģÐÍ£©
;// <h> Heap Configuration
;// <o> Heap Size (in Bytes) <0-8192:8>
;// </h>
Heap_Size EQU 0x400 ;¶¨Òå¶Ñ¿Õ¼äµÄ´óС£¬0x400 = 1k byte
AREA HEAP, NOINIT, READWRITE, ALIGN = 3
__heap_base ;±êºÅ__heap_base£¬±íʾ¶Ñ¿Õ¼äµÄÆðʼµØÖ·
Heap_Mem SPACE Heap_Size ;¿ª±ÙÒ»¶Î´óСΪStack_SizeµÄÄÚ´æ¿Õ¼ä×÷Ϊ¶Ñ
__heap_limit ;±êºÅ__heap_limit£¬±íʾ¶Ñ¿Õ¼äµÄ½áÊøµØÖ·
PRESERVE8 ;¸æËß±àÒëÆ÷ÒÔ8×Ö½Ú¶ÔÆë
THUMB ;¸æËß±àÒëÆ÷ʹÓÃThumbÖ¸Áî
; Vector table entries with the exceptions ISR address
AREA RESET, DATA, READONLY ;¶¨ÒåÖ»¶ÁÊý¾Ý¶Î£¬Êµ¼ÊÊÇCODEÇø
EXPORT __Vectors ;½«±êºÅ__VectorsÉùÃ÷Ϊȫ¾Ö±êºÅ£¬ÕâÑùÍⲿÎļþ¾Í¿ÉÒÔʹÓÃÕâ¸ö±êºÅ
EXPORT __Vectors_End
EXPORT __Vectors_Size
;±êºÅ__Vectors£¬±íʾÖжÏÏòÁ¿±íÈë¿ÚµØÖ·
__Vectors DCD __initial_sp ; Top of Stack
DCD Reset_Handler ; Reset Handler
DCD NMI_Handler ; NMI Handler
DCD HardFault_Handler ; Hard Fault Handler
DCD MemManage_Handler ; MPU Fault Handler
DCD BusFault_Handler ; Bus Fault Handler
DCD UsageFault_Handler ; Usage Fault Handler
DCD 0 ; Reserved
DCD 0 ; Reserved
DCD 0 ; Reserved
DCD 0 ; Reserved
DCD SVC_Handler ; SVCall Handler
DCD DebugMon_Handler ; Debug Monitor Handler
DCD 0 ; Reserved
DCD PendSV_Handler ; PendSV Handler
DCD SysTick_Handler ; SysTick Handler
; External Interrupts
DCD WWDG_IRQHandler ; Window Watchdog
DCD LVD_IRQHandler ; LVD through EXTI Line detect
DCD RTC_IRQHandler ; RTC through EXTI Line
DCD FMC_IRQHandler ; FMC
DCD RCC_IRQHandler ; RCC
DCD EXTI0_1_IRQHandler ; EXTI Line 0 and 1
DCD EXTI2_3_IRQHandler ; EXTI Line 2 and 3
DCD EXTI4_15_IRQHandler ; EXTI Line 4 to 15
DCD TS_IRQHandler ; TS
DCD DMA1_Channel1_IRQHandler ; DMA1 Channel 1
DCD DMA1_Channel2_3_IRQHandler ; DMA1 Channel 2 and Channel 3
DCD DMA1_Channel4_5_IRQHandler ; DMA1 Channel 4 and Channel 5
DCD ADC1_CMP_IRQHandler ; ADC1, CMP1 and CMP2
DCD TIM1_BRK_UP_TRG_COM_IRQHandler ; TIM1 Break, Update, Trigger and Commutation
DCD TIM1_CC_IRQHandler ; TIM1 Capture Compare
DCD TIM2_IRQHandler ; TIM2
DCD TIM3_IRQHandler ; TIM3
DCD TIM6_DAC_IRQHandler ; TIM6 and DAC
DCD 0 ; Reserved
DCD TIM14_IRQHandler ; TIM14
DCD TIM15_IRQHandler ; TIM15
DCD TIM16_IRQHandler ; TIM16
DCD TIM17_IRQHandler ; TIM17
DCD I2C1_EV_IRQHandler ; I2C1 Event
DCD I2C2_EV_IRQHandler ; I2C2 Event
DCD SPI1_IRQHandler ; SPI1
DCD SPI2_IRQHandler ; SPI2
DCD USART1_IRQHandler ; USART1
DCD USART2_IRQHandler ; USART2
DCD 0 ; Reserved
DCD CEC_IRQHandler ; CEC
DCD 0 ; Reserved
DCD I2C1_ER_IRQHandler ; I2C1 Error
DCD 0 ; Reserved
DCD I2C2_ER_IRQHandler ; I2C2 Error
DCD I2C3_EV_IRQHandler ; I2C3 Event
DCD I2C3_ER_IRQHandler ; I2C3 Error
DCD USB_LP_IRQHandler ; USB Low Priority
DCD USB_HP_IRQHandler ; USB High Priority
DCD 0 ; Reserved
DCD 0 ; Reserved
DCD 0 ; Reserved
DCD USBWakeUp_IRQHandler ; USB Wakeup from suspend
DCD 0 ; Reserved
DCD 0 ; Reserved
DCD 0 ; Reserved
DCD 0 ; Reserved
DCD 0 ; Reserved
DCD DMA1_Channel6_7_IRQHandler ; DMA1 Channel 6 and Channel 7
DCD 0 ; Reserved
DCD 0 ; Reserved
DCD SPI3_IRQHandler ; SPI3
SPACE 0x4A
__Vectors_End
__Vectors_Size EQU __Vectors_End - __Vectors
AREA |.text|, CODE, READONLY
; Reset handler routine
Reset_Handler PROC ;¸´Î»ÖжϷþÎñ³ÌÐò£¬PROC¡¡ENDP½á¹¹±íʾ³ÌÐòµÄ¿ªÊ¼ºÍ½áÊø
EXPORT Reset_Handler [WEAK]
IMPORT __main ;IMPORTÖ¸ÁָʾºóÐø·ûºÅÊÇÔÚÍⲿÎļþ¶¨Òå
IMPORT System_Init
LDR R0, =System_Init
BLX R0
LDR R0, =__main
BX R0
ENDP
; Dummy Exception Handlers
NMI_Handler PROC
EXPORT NMI_Handler [WEAK]
B .
ENDP
HardFault_Handler PROC
EXPORT HardFault_Handler [WEAK]
B .
ENDP
MemManage_Handler PROC
EXPORT MemManage_Handler [WEAK]
B .
ENDP
BusFault_Handler PROC
EXPORT BusFault_Handler [WEAK]
B .
ENDP
UsageFault_Handler PROC
EXPORT UsageFault_Handler [WEAK]
B .
ENDP
SVC_Handler PROC
EXPORT SVC_Handler [WEAK]
B .
ENDP
DebugMon_Handler PROC
EXPORT DebugMon_Handler [WEAK]
B .
ENDP
PendSV_Handler PROC
EXPORT PendSV_Handler [WEAK]
B .
ENDP
SysTick_Handler PROC
EXPORT SysTick_Handler [WEAK]
B .
ENDP
Default_Handler PROC
EXPORT WWDG_IRQHandler [WEAK]
EXPORT LVD_IRQHandler [WEAK]
EXPORT RTC_IRQHandler [WEAK]
EXPORT FMC_IRQHandler [WEAK]
EXPORT RCC_IRQHandler [WEAK]
EXPORT EXTI0_1_IRQHandler [WEAK]
EXPORT EXTI2_3_IRQHandler [WEAK]
EXPORT EXTI4_15_IRQHandler [WEAK]
EXPORT TS_IRQHandler [WEAK]
EXPORT DMA1_Channel1_IRQHandler [WEAK]
EXPORT DMA1_Channel2_3_IRQHandler [WEAK]
EXPORT DMA1_Channel4_5_IRQHandler [WEAK]
EXPORT DMA1_Channel6_7_IRQHandler [WEAK]
EXPORT ADC1_CMP_IRQHandler [WEAK]
EXPORT TIM1_BRK_UP_TRG_COM_IRQHandler [WEAK]
EXPORT TIM1_CC_IRQHandler [WEAK]
EXPORT TIM2_IRQHandler [WEAK]
EXPORT TIM3_IRQHandler [WEAK]
EXPORT TIM6_DAC_IRQHandler [WEAK]
EXPORT TIM14_IRQHandler [WEAK]
EXPORT TIM15_IRQHandler [WEAK]
EXPORT TIM16_IRQHandler [WEAK]
EXPORT TIM17_IRQHandler [WEAK]
EXPORT I2C1_EV_IRQHandler [WEAK]
EXPORT I2C2_EV_IRQHandler [WEAK]
EXPORT SPI1_IRQHandler [WEAK]
EXPORT SPI2_IRQHandler [WEAK]
EXPORT USART1_IRQHandler [WEAK]
EXPORT USART2_IRQHandler [WEAK]
EXPORT CEC_IRQHandler [WEAK]
EXPORT I2C1_ER_IRQHandler [WEAK]
EXPORT I2C2_ER_IRQHandler [WEAK]
EXPORT I2C3_EV_IRQHandler [WEAK]
EXPORT I2C3_ER_IRQHandler [WEAK]
EXPORT SPI3_IRQHandler [WEAK]
EXPORT USBWakeUp_IRQHandler [WEAK]
EXPORT USB_HP_IRQHandler [WEAK]
EXPORT USB_LP_IRQHandler [WEAK]
WWDG_IRQHandler
LVD_IRQHandler
RTC_IRQHandler
FMC_IRQHandler
RCC_IRQHandler
EXTI0_1_IRQHandler
EXTI2_3_IRQHandler
EXTI4_15_IRQHandler
TS_IRQHandler
DMA1_Channel1_IRQHandler
DMA1_Channel2_3_IRQHandler
DMA1_Channel4_5_IRQHandler
DMA1_Channel6_7_IRQHandler
ADC1_CMP_IRQHandler
TIM1_BRK_UP_TRG_COM_IRQHandler
TIM1_CC_IRQHandler
TIM2_IRQHandler
TIM3_IRQHandler
TIM6_DAC_IRQHandler
TIM14_IRQHandler
TIM15_IRQHandler
TIM16_IRQHandler
TIM17_IRQHandler
I2C1_EV_IRQHandler
I2C2_EV_IRQHandler
SPI1_IRQHandler
SPI2_IRQHandler
USART1_IRQHandler
USART2_IRQHandler
CEC_IRQHandler
I2C1_ER_IRQHandler
I2C2_ER_IRQHandler
I2C3_EV_IRQHandler
I2C3_ER_IRQHandler
SPI3_IRQHandler
USBWakeUp_IRQHandler
USB_HP_IRQHandler
USB_LP_IRQHandler
B .
ENDP
ALIGN
;*******************************************************************************
; User Stack and Heap initialization
;*******************************************************************************
IF  EF:__MICROLIB
EXPORT __initial_sp
EXPORT __heap_base
EXPORT __heap_limit
ELSE
IMPORT __use_two_region_memory
EXPORT __user_initial_stackheap
__user_initial_stackheap
LDR R0, = Heap_Mem
LDR R1, =(Stack_Mem + Stack_Size)
LDR R2, = (Heap_Mem + Heap_Size)
LDR R3, = Stack_Mem
BX LR
ALIGN
ENDIF
END
;/******************* (C) COPYRIGHT 2014 GIGADEVICE *****END OF FILE****/ |
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发表于 2015-7-1 21:26:25
发表于 2015-7-1 21:54:31
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