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/*
* crt0.S -- startup file for D30V systems.
*
* Copyright (c) 1997 Cygnus Support
*
* The authors hereby grant permission to use, copy, modify, distribute,
* and license this software and its documentation for any purpose, provided
* that existing copyright notices are retained in all copies and that this
* notice is included verbatim in any distributions. No written agreement,
* license, or royalty fee is required for any of the authorized uses.
* Modifications to this software may be copyrighted by their authors
* and need not follow the licensing terms described here, provided that
* the new terms are clearly indicated on the first page of each file where
* they apply.
*/
.file "crt0.S"
.text
.globl _start
.extern main
.extern exit
.extern __stack
.extern __sbss_start
.extern __sbss_end
.extern __ebss_start
.extern __ebss_end
.extern __bss_start
.extern __bss_end
.extern memset
.type _start,@function
_start: or.l sp,r0,__stack
/* Zero the .sbss area */
or.l r2,r0,__sbss_start
or.l r4,r0,__sbss_end
sub r4,r4,r2 || or.s r3,r0,0
bsrtnz.l r4,(memset)
/* Zero the .ebss area */
or.l r2,r0,__ebss_start
or.l r4,r0,__ebss_end
sub r4,r4,r2 || or.s r3,r0,0
bsrtnz.l r4,(memset)
/* Zero the .bss area */
or.l r2,r0,__bss_start
or.l r4,r0,__bss_end
sub r4,r4,r2 || or.s r3,r0,0
bsrtnz.l r4,(memset)
or.s r2,r0,0 || or.s r3,r0,0
or r4,r0,0 || nop
jsr.l (main)
jsr.l (exit)
.size _start,.-_start
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