244 lines
10 KiB
ArmAsm
244 lines
10 KiB
ArmAsm
/* File: startup_ARMCM3.s
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* Purpose: startup file for Cortex-M3/M4 devices. Should use with
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* GNU Tools for ARM Embedded Processors
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* Version: V1.1
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* Date: 17 June 2011
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*
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* Copyright (c) 2011, 2012, ARM Limited
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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* Neither the name of the ARM Limited nor the
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names of its contributors may be used to endorse or promote products
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derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL ARM LIMITED BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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.syntax unified
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.arch armv7-m
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.section .stack
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.align 3
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#ifdef __STACK_SIZE
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.equ Stack_Size, __STACK_SIZE
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#else
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.equ Stack_Size, 0xc00
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#endif
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.globl __StackTop
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.globl __StackLimit
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__StackLimit:
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.space Stack_Size
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.size __StackLimit, . - __StackLimit
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__StackTop:
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.size __StackTop, . - __StackTop
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.section .heap
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.align 3
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#ifdef __HEAP_SIZE
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.equ Heap_Size, __HEAP_SIZE
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#else
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.equ Heap_Size, 0
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#endif
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.globl __HeapBase
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.globl __HeapLimit
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__HeapBase:
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.if Heap_Size
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.space Heap_Size
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.endif
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.size __HeapBase, . - __HeapBase
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__HeapLimit:
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.size __HeapLimit, . - __HeapLimit
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.section .isr_vector
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.align 2
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.globl __isr_vector
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__isr_vector:
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.long __StackTop /* Top of Stack */
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.long Reset_Handler /* Reset Handler */
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.long NMI_Handler /* NMI Handler */
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.long HardFault_Handler /* Hard Fault Handler */
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.long MemManage_Handler /* MPU Fault Handler */
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.long BusFault_Handler /* Bus Fault Handler */
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.long UsageFault_Handler /* Usage Fault Handler */
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.long 0 /* Reserved */
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.long 0 /* Reserved */
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.long 0 /* Reserved */
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.long 0 /* Reserved */
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.long SVC_Handler /* SVCall Handler */
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.long DebugMon_Handler /* Debug Monitor Handler */
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.long 0 /* Reserved */
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.long PendSV_Handler /* PendSV Handler */
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.long SysTick_Handler /* SysTick Handler */
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.long WWDG_IRQHandler /* Window Watchdog */
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/* External interrupts */
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.long PVD_IRQHandler /* PVD through EXTI Line detect */
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.long TAMPER_IRQHandler /* Tamper */
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.long RTC_IRQHandler /* RTC */
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.long FLASH_IRQHandler /* Flash */
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.long RCC_IRQHandler /* RCC */
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.long EXTI0_IRQHandler /* EXTI Line 0 */
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.long EXTI1_IRQHandler /* EXTI Line 1 */
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.long EXTI2_IRQHandler /* EXTI Line 2 */
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.long EXTI3_IRQHandler /* EXTI Line 3 */
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.long EXTI4_IRQHandler /* EXTI Line 4 */
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.long DMA1_Channel1_IRQHandler /* DMA1 Channel 1 */
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.long DMA1_Channel2_IRQHandler /* DMA1 Channel 2 */
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.long DMA1_Channel3_IRQHandler /* DMA1 Channel 3 */
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.long DMA1_Channel4_IRQHandler /* DMA1 Channel 4 */
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.long DMA1_Channel5_IRQHandler /* DMA1 Channel 5 */
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.long DMA1_Channel6_IRQHandler /* DMA1 Channel 6 */
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.long DMA1_Channel7_IRQHandler /* DMA1 Channel 7 */
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.long ADC1_2_IRQHandler /* ADC1_2 */
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.long USB_HP_CAN1_TX_IRQHandler /* USB High Priority or CAN1 TX */
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.long USB_LP_CAN1_RX0_IRQHandler /* USB Low Priority or CAN1 RX0 */
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.long CAN1_RX1_IRQHandler /* CAN1 RX1 */
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.long CAN1_SCE_IRQHandler /* CAN1 SCE */
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.long EXTI9_5_IRQHandler /* EXTI Line 9..5 */
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.long TIM1_BRK_IRQHandler /* TIM1 Break */
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.long TIM1_UP_IRQHandler /* TIM1 Update */
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.long TIM1_TRG_COM_IRQHandler /* TIM1 Trigger and Commutation */
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.long TIM1_CC_IRQHandler /* TIM1 Capture Compare */
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.long TIM2_IRQHandler /* TIM2 */
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.long TIM3_IRQHandler /* TIM3 */
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.long TIM4_IRQHandler /* TIM4 */
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.long I2C1_EV_IRQHandler /* I2C1 Event */
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.long I2C1_ER_IRQHandler /* I2C1 Error */
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.long I2C2_EV_IRQHandler /* I2C2 Event */
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.long I2C2_ER_IRQHandler /* I2C2 Error */
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.long SPI1_IRQHandler /* SPI1 */
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.long SPI2_IRQHandler /* SPI2 */
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.long USART1_IRQHandler /* USART1 */
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.long USART2_IRQHandler /* USART2 */
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.long USART3_IRQHandler /* USART3 */
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.long EXTI15_10_IRQHandler /* EXTI Line 15..10 */
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.long RTCAlarm_IRQHandler /* RTC Alarm through EXTI Line */
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.long USBWakeUp_IRQHandler /* USB Wakeup from suspend */
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.size __isr_vector, . - __isr_vector
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.text
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.thumb
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.thumb_func
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.align 2
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.globl Reset_Handler
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.type Reset_Handler, %function
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Reset_Handler:
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/* Loop to copy data from read only memory to RAM. The ranges
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* of copy from/to are specified by following symbols evaluated in
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* linker script.
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* __etext: End of code section, i.e., begin of data sections to copy from.
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* __data_start__/__data_end__: RAM address range that data should be
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* copied to. Both must be aligned to 4 bytes boundary. */
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ldr r1, =__etext
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ldr r2, =__data_start__
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ldr r3, =__data_end__
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.LC0:
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cmp r2, r3
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ittt lt
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ldrlt r0, [r1], #4
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strlt r0, [r2], #4
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blt .LC0
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ldr r0, =SystemInit
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blx r0
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ldr r0, =_start
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bx r0
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.pool
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.size Reset_Handler, . - Reset_Handler
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.text
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/* Macro to define default handlers. Default handler
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* will be weak symbol and just dead loops. They can be
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* overwritten by other handlers */
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.macro def_default_handler handler_name
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.align 1
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.thumb_func
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.weak \handler_name
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.type \handler_name, %function
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\handler_name :
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b .
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.size \handler_name, . - \handler_name
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.endm
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def_default_handler NMI_Handler
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def_default_handler HardFault_Handler
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def_default_handler MemManage_Handler
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def_default_handler BusFault_Handler
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def_default_handler UsageFault_Handler
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def_default_handler SVC_Handler
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def_default_handler DebugMon_Handler
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def_default_handler PendSV_Handler
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def_default_handler SysTick_Handler
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def_default_handler Default_Handler
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.macro def_irq_default_handler handler_name
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.weak \handler_name
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.set \handler_name, Default_Handler
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.endm
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def_irq_default_handler WWDG_IRQHandler
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def_irq_default_handler PVD_IRQHandler
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def_irq_default_handler TAMPER_IRQHandler
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def_irq_default_handler RTC_IRQHandler
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def_irq_default_handler FLASH_IRQHandler
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def_irq_default_handler RCC_IRQHandler
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def_irq_default_handler EXTI0_IRQHandler
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def_irq_default_handler EXTI1_IRQHandler
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def_irq_default_handler EXTI2_IRQHandler
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def_irq_default_handler EXTI3_IRQHandler
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def_irq_default_handler EXTI4_IRQHandler
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def_irq_default_handler DMA1_Channel1_IRQHandler
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def_irq_default_handler DMA1_Channel2_IRQHandler
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def_irq_default_handler DMA1_Channel3_IRQHandler
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def_irq_default_handler DMA1_Channel4_IRQHandler
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def_irq_default_handler DMA1_Channel5_IRQHandler
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def_irq_default_handler DMA1_Channel6_IRQHandler
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def_irq_default_handler DMA1_Channel7_IRQHandler
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def_irq_default_handler ADC1_2_IRQHandler
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def_irq_default_handler USB_HP_CAN1_TX_IRQHandler
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def_irq_default_handler USB_LP_CAN1_RX0_IRQHandler
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def_irq_default_handler CAN1_RX1_IRQHandler
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def_irq_default_handler CAN1_SCE_IRQHandler
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def_irq_default_handler EXTI9_5_IRQHandler
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def_irq_default_handler TIM1_BRK_IRQHandler
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def_irq_default_handler TIM1_UP_IRQHandler
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def_irq_default_handler TIM1_TRG_COM_IRQHandler
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def_irq_default_handler TIM1_CC_IRQHandler
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def_irq_default_handler TIM2_IRQHandler
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def_irq_default_handler TIM3_IRQHandler
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def_irq_default_handler TIM4_IRQHandler
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def_irq_default_handler I2C1_EV_IRQHandler
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def_irq_default_handler I2C1_ER_IRQHandler
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def_irq_default_handler I2C2_EV_IRQHandler
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def_irq_default_handler I2C2_ER_IRQHandler
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def_irq_default_handler SPI1_IRQHandler
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def_irq_default_handler SPI2_IRQHandler
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def_irq_default_handler USART1_IRQHandler
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def_irq_default_handler USART2_IRQHandler
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def_irq_default_handler USART3_IRQHandler
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def_irq_default_handler EXTI15_10_IRQHandler
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def_irq_default_handler RTCAlarm_IRQHandler
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def_irq_default_handler USBWakeUp_IRQHandler
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.end
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