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// Rowley C Compiler, runtime support.

//

// Copyright (c) 2001, 2002, 2003 Rowley Associates Limited.

//

// This file may be distributed under the terms of the License Agreement

// provided with this software.

//

// THIS FILE IS PROVIDED AS IS WITH NO WARRANTY OF ANY KIND, INCLUDING THE

// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

; Create sections

        .data

        .bss

; Go to code section.

        .code

; Executed upon reset

__reset proc

; Turn off watchdog.  You can enable it in main() if required.

        mov.w   #0x5a80, &0x120

; Set up stack.

        mov.w   #RAM_Start_Address+RAM_Size, sp

; Copy from initialised data section to data section.

        mov.w   #SFB(IDATA0), r15

        mov.w   #data_init_begin, r14

        mov.w   #data_init_end-data_init_begin, r13

        call    #_memcpy

; Zero the bss.  Ensure the stack is not allocated in the bss!

        mov.w   #SFB(UDATA0), r15

        mov.w   #0, r14

        mov.w   #SFE(UDATA0)-SFB(UDATA0), r13

        call    #_memset

; Call user entry point void main(void).

        call    #_main

; If main() returns, kick off again.

        jmp     __reset

        endproc

; Heap data structures; removed by the linker if the heap isn't used.

        .break

        .data

        align   WORD

___heap_start__::

        DW      0

        DW      heap_size

        DS      heap_size-4

; Reset vector

        .vectors

        .keep

        org     0x1e

        dw      __reset

; Initialise the IDATA0 section by duplicating the contents into the

; CONST section and copying them on startup.

        .const

data_init_begin:

        .init  "IDATA0"

data_init_end: