/* File: startup_armv7-m.S
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* Purpose: startup file for armv7-m architecture devices.
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* Should be used with ARMCLANG
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* Version: V2.00
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* Date: 16 November 2015
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*
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*/
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/* Copyright (c) 2011 - 2015 ARM LIMITED
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All rights reserved.
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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 ARM nor the names of its contributors may be used
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to endorse or promote products derived from this software without
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specific prior written permission.
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*
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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---------------------------------------------------------------------------*/
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/*
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;//-------- <<< Use Configuration Wizard in Context Menu >>> ------------------
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*/
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.syntax unified
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.arch armv6-m
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/* .eabi_attribute Tag_ABI_align8_preserved,1 www.support.code-red-tech.com/CodeRedWiki/Preserve8 */
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.eabi_attribute 25, 1 /* Tag_ABI_align_preserved */
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/*
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;<h> Stack Configuration
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; <o> Stack Size (in Bytes) <0x0-0xFFFFFFFF:8>
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;</h>
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*/
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.equ Stack_Size, 0x00000400
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.section STACK, "w"
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.align 3
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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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__StackTop: /* formerly known as __initial_sp */
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/*
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;<h> Heap Configuration
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; <o> Heap Size (in Bytes) <0x0-0xFFFFFFFF:8>
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;</h>
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*/
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.equ Heap_Size, 0x00000C00
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.section HEAP, "w"
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.align 3
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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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__HeapLimit:
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.section RESET, "x"
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.align 2
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.globl __Vectors
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.globl __Vectors_End
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.globl __Vectors_Size
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__Vectors:
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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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__Vectors_End:
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.equ __Vectors_Size, __Vectors_End - __Vectors
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.text
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.thumb
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.align 2
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.globl Reset_Handler
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.weak Reset_Handler
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.type Reset_Handler, %function
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.thumb_func
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Reset_Handler:
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bl SystemInit
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bl __main
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.globl NMI_Handler
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.weak NMI_Handler
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.type NMI_Handler, %function
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.thumb_func
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NMI_Handler:
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bkpt #0
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b .
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.globl HardFault_Handler
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.weak HardFault_Handler
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.type HardFault_Handler, %function
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.thumb_func
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HardFault_Handler:
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bkpt #0
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b .
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.globl MemManage_Handler
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.weak MemManage_Handler
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.type MemManage_Handler, %function
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.thumb_func
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MemManage_Handler:
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bkpt #0
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b .
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.globl BusFault_Handler
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.weak BusFault_Handler
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.type BusFault_Handler, %function
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.thumb_func
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BusFault_Handler:
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bkpt #0
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b .
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.globl UsageFault_Handler
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.weak UsageFault_Handler
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.type UsageFault_Handler, %function
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.thumb_func
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UsageFault_Handler:
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bkpt #0
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b .
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.globl SVC_Handler
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.weak SVC_Handler
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.type SVC_Handler, %function
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.thumb_func
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SVC_Handler:
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bkpt #0
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b .
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.globl DebugMon_Handler
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.weak DebugMon_Handler
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.type DebugMon_Handler, %function
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.thumb_func
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DebugMon_Handler:
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bkpt #0
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b .
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.globl PendSV_Handler
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.weak PendSV_Handler
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.type PendSV_Handler, %function
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.thumb_func
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PendSV_Handler:
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bkpt #0
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b .
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.globl SysTick_Handler
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.weak SysTick_Handler
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.type SysTick_Handler, %function
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.thumb_func
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SysTick_Handler:
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bkpt #0
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b .
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.global __use_two_region_memory
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/*
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__user_setup_stackheap() returns the:
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- heap base in r0 (if the program uses the heap)
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- stack base in sp
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- heap limit in r2 (if the program uses the heap and uses two-region memory).
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*/
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.globl __user_setup_stackheap
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.type __user_setup_stackheap, %function
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.thumb_func
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__user_setup_stackheap:
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ldr r0, =__StackTop
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mov sp, r0
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.if Heap_Size
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ldr r0, =__HeapBase
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ldr r2, =__HeapLimit
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.else
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mov r0, #0
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mov r2, #0
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.endif
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bx lr
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/*
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__user_initial_stackheap() returns the:
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- heap base in r0
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- stack base in r1, that is, the highest address in the stack region
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- heap limit in r2
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- stack limit in r3, that is, the lowest address in the stack region.
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*/
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/* DEPRICATED
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.globl __user_initial_stackheap
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.type __user_initial_stackheap, %function
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.thumb_func
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__user_initial_stackheap:
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ldr r0, = __HeapBase
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ldr r1, = __StackTop
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ldr r2, = __HeapLimit
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ldr r3, = __StackLimit
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bx lr
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*/
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.end
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