/* *---------------------------------------------------------------------- *    T-Kernel * *    Copyright (C) 2004 by Ken Sakamura. All rights reserved. *    T-Kernel is distributed under the T-License. *---------------------------------------------------------------------- * *    Version:   1.01.00 *    Released by T-Engine Forum(http://www.t-engine.org) at 2004/6/28. * *---------------------------------------------------------------------- *//* *	@(#)asmstartup.S (crttk) * *	Driver/manager startup  */#include <machine.h>#include <tk/asm.h>	.text	.balign	4	.globl	Csym(_C_startup)	.type	Csym(_C_startup), @functionCsym(_C_startup):	cmp/pz	r4	bf	l_noinit	// Initialize is performed only when ac >= 0	mov.l	DATA_ORG, r1	// When data area does not need to be moved,	mov.l	DATA_START, r2	// OS loads	cmp/eq	r1, r2	bt	l_noinit        mov.l   DATA_END, r3        bra     l1		// initialize data area        nop  copydata:	mov.l	@r1+, r0	mov.l	r0, @r2	add	#4, r2  l1:	cmp/hi	r2, r3	bt	copydata	mov.l	BSS_START, r2	// clear bss area	mov.l	BSS_END, r3	bra	l2	mov	#0, r0  clrbss:	mov.l	r0, @-r3  l2:	cmp/hi	r2, r3	bt	clrbss  l_noinit:	mov.l	L_Startup, r0	jmp	@r0	nop		.balign	4DATA_ORG:	.long	Csym(__data_org)DATA_START:	.long	Csym(__data_start)DATA_END:	.long	Csym(_edata)BSS_START:	.long	Csym(__bss_start)BSS_END:	.long	Csym(_end)L_Startup:	.long	Csym(_P_startup)