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|
;/* File: startup_armv6-m.s
; * Purpose: startup file for armv7-m architecture devices.
; * Should be used with ARMCC
; * Version: V2.00
; * Date: 16 November 2015
; *
; */
;/* Copyright (c) 2011 - 2014 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 >>> ------------------
;*/
; <h> Stack Configuration
; <o> Stack Size (in Bytes) <0x0-0xFFFFFFFF:8>
; </h>
Stack_Size EQU 0x00000400
AREA STACK, NOINIT, READWRITE, ALIGN=3
Stack_Mem SPACE Stack_Size
__initial_sp
; <h> Heap Configuration
; <o> Heap Size (in Bytes) <0x0-0xFFFFFFFF:8>
; </h>
Heap_Size EQU 0x00000C00
AREA HEAP, NOINIT, READWRITE, ALIGN=3
__heap_base
Heap_Mem SPACE Heap_Size
__heap_limit
PRESERVE8
THUMB
; Vector Table Mapped to Address 0 at Reset
AREA RESET, DATA, READONLY
EXPORT __Vectors
EXPORT __Vectors_End
EXPORT __Vectors_Size
__Vectors DCD __initial_sp ; Top of Stack
DCD Reset_Handler ; Reset Handler
DCD NMI_Handler ; NMI Handler
DCD HardFault_Handler ; Hard Fault Handler
DCD 0 ; Reserved
DCD 0 ; Reserved
DCD 0 ; Reserved
DCD 0 ; Reserved
DCD 0 ; Reserved
DCD 0 ; Reserved
DCD 0 ; Reserved
DCD SVC_Handler ; SVCall Handler
DCD 0 ; Reserved
DCD 0 ; Reserved
DCD PendSV_Handler ; PendSV Handler
DCD SysTick_Handler ; SysTick Handler
__Vectors_End
__Vectors_Size EQU __Vectors_End - __Vectors
AREA |.text|, CODE, READONLY
; Reset Handler
Reset_Handler PROC
EXPORT Reset_Handler [WEAK]
IMPORT SystemInit
IMPORT __main
LDR R0, =SystemInit
BLX R0
LDR R0, =__main
BX R0
ENDP
; Dummy Exception Handlers (infinite loops which can be modified)
NMI_Handler PROC
EXPORT NMI_Handler [WEAK]
BKPT #0
B .
ENDP
HardFault_Handler\
PROC
EXPORT HardFault_Handler [WEAK]
BKPT #0
B .
ENDP
SVC_Handler PROC
EXPORT SVC_Handler [WEAK]
B .
ENDP
PendSV_Handler PROC
EXPORT PendSV_Handler [WEAK]
B .
ENDP
SysTick_Handler PROC
EXPORT SysTick_Handler [WEAK]
B .
ENDP
ALIGN
; User Initial Stack & Heap
IF :DEF:__MICROLIB
EXPORT __initial_sp
EXPORT __heap_base
EXPORT __heap_limit
ELSE
IMPORT __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).
; */
EXPORT __user_setup_stackheap
__user_setup_stackheap PROC
LDR R0, = __initial_sp
MOV SP, R0
IF Heap_Size > 0
LDR R2, = __heap_limit
LDR R0, = __heap_base
ELSE
MOV R0, #0
MOV R2, #0
ENDIF
BX LR
ENDP
;/*
;__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
; EXPORT __user_initial_stackheap
;
;__user_initial_stackheap PROC
; LDR R0, = Heap_Mem
; LDR R1, =(Stack_Mem + Stack_Size)
; LDR R2, = (Heap_Mem + Heap_Size)
; LDR R3, = Stack_Mem
; BX LR
; ENDP
; */
ALIGN
ENDIF
END
|
