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startup_W7500.S
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startup_W7500.S
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/* File: startup_W7500.s
* Purpose: startup file for Cortex-M0 devices. Should use with
* GCC for ARM Embedded Processors
* Version: V1.4
* Date: 20 Dezember 2012
*
*/
/* Copyright (c) 2011 - 2012 ARM LIMITED
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
- Neither the name of ARM nor the names of its contributors may be used
to endorse or promote products derived from this software without
specific prior written permission.
*
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
---------------------------------------------------------------------------*/
.syntax unified
.arch armv6-m
.section .stack
.align 3
/*
// <h> Stack Configuration
// <o> Stack Size (in Bytes) <0x0-0xFFFFFFFF:8>
// </h>
*/
.section .stack
.align 3
#ifdef __STACK_SIZE
.equ Stack_Size, __STACK_SIZE
#else
.equ Stack_Size, 0x200
#endif
.globl __StackTop
.globl __StackLimit
__StackLimit:
.space Stack_Size
.size __StackLimit, . - __StackLimit
__StackTop:
.size __StackTop, . - __StackTop
/*
// <h> Heap Configuration
// <o> Heap Size (in Bytes) <0x0-0xFFFFFFFF:8>
// </h>
*/
.section .heap
.align 3
#ifdef __HEAP_SIZE
.equ Heap_Size, __HEAP_SIZE
#else
.equ Heap_Size, 0
#endif
.globl __HeapBase
.globl __HeapLimit
__HeapBase:
.if Heap_Size
.space Heap_Size
.endif
.size __HeapBase, . - __HeapBase
__HeapLimit:
.size __HeapLimit, . - __HeapLimit
/* Vector Table */
.section .isr_vector
.align 2
.globl __isr_vector
__isr_vector:
.long __StackTop /* Top of Stack */
.long Reset_Handler /* Reset Handler */
.long NMI_Handler /* NMI Handler */
.long HardFault_Handler /* Hard Fault 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 /* SVCall Handler */
.long 0 /* Debug Monitor Handler */
.long 0 /* Reserved */
.long PendSV_Handler /* PendSV Handler */
.long SysTick_Handler /* SysTick Handler */
/* External Interrupts */
.long SSP0_Handler /* 16+ 0: SSP 0 Handler */
.long SSP1_Handler /* 16+ 1: SSP 1 Handler */
.long UART0_Handler /* 16+ 2: UART 0 Handler */
.long UART1_Handler /* 16+ 3: UART 1 Handler */
.long UART2_Handler /* 16+ 4: UART 2 Handler */
.long I2C0_Handler /* 16+ 5: I2C 0 Handler */
.long I2C1_Handler /* 16+ 6: I2C 1 Handler */
.long PORT0_Handler /* 16+ 7: GPIO Port 0 Combined Handler */
.long PORT1_Handler /* 16+ 8: GPIO Port 1 Combined Handler */
.long PORT2_Handler /* 16+ 9: GPIO Port 2 Combined Handler */
.long PORT3_Handler /* 16+10: GPIO Port 3 Combined Handler */
.long DMA_Handler /* 16+11: DMA Combined Handler */
.long DUALTIMER0_Handler /* 16+12: Dual timer 0 handler */
.long DUALTIMER1_Handler /* 16+ 13: Dual timer 1 Handler */
.long PWM0_Handler /* 16+ 14: PWM0 Handler */
.long PWM1_Handler /* 16+ 15: PWM1 Handler */
.long PWM2_Handler /* 16+ 16: PWM2 Handler */
.long PWM3_Handler /* 16+ 17: PWM3 Handler */
.long PWM4_Handler /* 16+ 18: PWM4 Handler */
.long PWM5_Handler /* 16+ 19: PWM5 Handler */
.long PWM6_Handler /* 16+ 20: PWM6 Handler */
.long PWM7_Handler /* 16+ 21: PWM7 Handler */
.long RTC_Handler /* 16+ 22: RTC Handler */
.long ADC_Handler /* 16+ 23: ADC Handler */
.long WZTOE_Handler /* 16+ 24: WZTOE Handler */
.long EXTI_Handler /* 16+ 25: EXTI Handler */
.size __isr_vector, . - __isr_vector
/* Reset Handler */
.text
.thumb
.thumb_func
.align 2
.globl Reset_Handler
.type Reset_Handler, %function
Reset_Handler:
/* Loop to copy data from read only memory to RAM. The ranges
* of copy from/to are specified by following symbols evaluated in
* linker script.
* __etext: End of code section, i.e., begin of data sections to copy from.
* __data_start__/__data_end__: RAM address range that data should be
* copied to. Both must be aligned to 4 bytes boundary. */
ldr r1, =__etext
ldr r2, =__data_start__
ldr r3, =__data_end__
subs r3, r2
ble .LC1
.LC0:
subs r3, #4
ldr r0, [r1, r3]
str r0, [r2, r3]
bgt .LC0
.LC1:
#ifdef __STARTUP_CLEAR_BSS
/* This part of work usually is done in C library startup code. Otherwise,
* define this macro to enable it in this startup.
*
* Loop to zero out BSS section, which uses following symbols
* in linker script:
* __bss_start__: start of BSS section. Must align to 4
* __bss_end__: end of BSS section. Must align to 4
*/
ldr r1, =__bss_start__
ldr r2, =__bss_end__
subs r2, r1
ble .LC3
movs r0, 0
.LC2:
str r0, [r1, r2]
subs r2, 4
bge .LC2
.LC3:
#endif /* __STARTUP_CLEAR_BSS */
bl _start
//bl main
.pool
.size Reset_Handler, . - Reset_Handler
/* Macro to define default handlers. Default handler
* will be weak symbol and just dead loops. They can be
* overwritten by other handlers */
.macro def_default_handler handler_name
.align 1
.thumb_func
.weak \handler_name
.type \handler_name, %function
\handler_name :
b .
.size \handler_name, . - \handler_name
.endm
/* System Exception Handlers */
def_default_handler NMI_Handler
def_default_handler HardFault_Handler
def_default_handler MemManage_Handler
def_default_handler BusFault_Handler
def_default_handler UsageFault_Handler
def_default_handler SVC_Handler
def_default_handler DebugMon_Handler
def_default_handler PendSV_Handler
def_default_handler SysTick_Handler
/* IRQ Handlers */
def_default_handler SSP0_Handler
def_default_handler SSP1_Handler
def_default_handler UART0_Handler
def_default_handler UART1_Handler
def_default_handler UART2_Handler
def_default_handler I2C0_Handler
def_default_handler I2C1_Handler
def_default_handler PORT0_Handler
def_default_handler PORT1_Handler
def_default_handler PORT2_Handler
def_default_handler PORT3_Handler
def_default_handler DMA_Handler
def_default_handler DUALTIMER0_Handler
def_default_handler DUALTIMER1_Handler
def_default_handler PWM0_Handler
def_default_handler PWM1_Handler
def_default_handler PWM2_Handler
def_default_handler PWM3_Handler
def_default_handler PWM4_Handler
def_default_handler PWM5_Handler
def_default_handler PWM6_Handler
def_default_handler PWM7_Handler
def_default_handler RTC_Handler
def_default_handler ADC_Handler
def_default_handler WZTOE_Handler
def_default_handler EXTI_Handler
/*
def_default_handler Default_Handler
.weak DEF_IRQHandler
.set DEF_IRQHandler, Default_Handler
*/
.end