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/* File: startup_armv7-m.S
* Purpose: startup file for armv7-m architecture devices.
* Should be used with ARMCLANG
* Version: V2.00
* Date: 16 November 2015
*
*/
/* Copyright (c) 2011 - 2015 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.
---------------------------------------------------------------------------*/
/*
;//-------- <<< Use Configuration Wizard in Context Menu >>> ------------------
*/
.syntax unified
.arch armv6-m
/* .eabi_attribute Tag_ABI_align8_preserved,1 www.support.code-red-tech.com/CodeRedWiki/Preserve8 */
.eabi_attribute 25, 1 /* Tag_ABI_align_preserved */
/*
;<h> Stack Configuration
; <o> Stack Size (in Bytes) <0x0-0xFFFFFFFF:8>
;</h>
*/
.equ Stack_Size, 0x00000400
.section STACK, "w"
.align 3
.globl __StackTop
.globl __StackLimit
__StackLimit:
.space Stack_Size
__StackTop: /* formerly known as __initial_sp */
/*
;<h> Heap Configuration
; <o> Heap Size (in Bytes) <0x0-0xFFFFFFFF:8>
;</h>
*/
.equ Heap_Size, 0x00000C00
.section HEAP, "w"
.align 3
.globl __HeapBase
.globl __HeapLimit
__HeapBase:
.if Heap_Size
.space Heap_Size
.endif
__HeapLimit:
.section RESET, "x"
.align 2
.globl __Vectors
.globl __Vectors_End
.globl __Vectors_Size
__Vectors:
.long __StackTop /* Top of Stack */
.long Reset_Handler /* Reset Handler */
.long NMI_Handler /* NMI Handler */
.long HardFault_Handler /* Hard Fault Handler */
.long MemManage_Handler /* MPU Fault Handler */
.long BusFault_Handler /* Bus Fault Handler */
.long UsageFault_Handler /* Usage Fault Handler */
.long 0 /* Reserved */
.long 0 /* Reserved */
.long 0 /* Reserved */
.long 0 /* Reserved */
.long SVC_Handler /* SVCall Handler */
.long DebugMon_Handler /* Debug Monitor Handler */
.long 0 /* Reserved */
.long PendSV_Handler /* PendSV Handler */
.long SysTick_Handler /* SysTick Handler */
__Vectors_End:
.equ __Vectors_Size, __Vectors_End - __Vectors
.text
.thumb
.align 2
.globl Reset_Handler
.weak Reset_Handler
.type Reset_Handler, %function
.thumb_func
Reset_Handler:
bl SystemInit
bl __main
.globl NMI_Handler
.weak NMI_Handler
.type NMI_Handler, %function
.thumb_func
NMI_Handler:
bkpt #0
b .
.globl HardFault_Handler
.weak HardFault_Handler
.type HardFault_Handler, %function
.thumb_func
HardFault_Handler:
bkpt #0
b .
.globl MemManage_Handler
.weak MemManage_Handler
.type MemManage_Handler, %function
.thumb_func
MemManage_Handler:
bkpt #0
b .
.globl BusFault_Handler
.weak BusFault_Handler
.type BusFault_Handler, %function
.thumb_func
BusFault_Handler:
bkpt #0
b .
.globl UsageFault_Handler
.weak UsageFault_Handler
.type UsageFault_Handler, %function
.thumb_func
UsageFault_Handler:
bkpt #0
b .
.globl SVC_Handler
.weak SVC_Handler
.type SVC_Handler, %function
.thumb_func
SVC_Handler:
bkpt #0
b .
.globl DebugMon_Handler
.weak DebugMon_Handler
.type DebugMon_Handler, %function
.thumb_func
DebugMon_Handler:
bkpt #0
b .
.globl PendSV_Handler
.weak PendSV_Handler
.type PendSV_Handler, %function
.thumb_func
PendSV_Handler:
bkpt #0
b .
.globl SysTick_Handler
.weak SysTick_Handler
.type SysTick_Handler, %function
.thumb_func
SysTick_Handler:
bkpt #0
b .
.global __use_two_region_memory
/*
__user_setup_stackheap() returns the:
- heap base in r0 (if the program uses the heap)
- stack base in sp
- heap limit in r2 (if the program uses the heap and uses two-region memory).
*/
.globl __user_setup_stackheap
.type __user_setup_stackheap, %function
.thumb_func
__user_setup_stackheap:
ldr r0, =__StackTop
mov sp, r0
.if Heap_Size
ldr r0, =__HeapBase
ldr r2, =__HeapLimit
.else
mov r0, #0
mov r2, #0
.endif
bx lr
/*
__user_initial_stackheap() returns the:
- heap base in r0
- stack base in r1, that is, the highest address in the stack region
- heap limit in r2
- stack limit in r3, that is, the lowest address in the stack region.
*/
/* DEPRICATED
.globl __user_initial_stackheap
.type __user_initial_stackheap, %function
.thumb_func
__user_initial_stackheap:
ldr r0, = __HeapBase
ldr r1, = __StackTop
ldr r2, = __HeapLimit
ldr r3, = __StackLimit
bx lr
*/
.end
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