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/*
 * Copyright (C) 2003 by Erik Andersen
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Library General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or (at your
 * option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License
 * for more details.
 *
 * You should have received a copy of the GNU Library General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */

/* Integer registers.  */
#define r0      0
#define r1      1
#define r2      2
#define r3      3
#define r4      4
#define r5      5
#define r6      6
#define r7      7
#define r8      8
#define r9      9
#define r10     10
#define r13     13
#define r31     31

#include <features.h>

.text
	.globl	_start
	.type	_start,%function
	.type	_init,%function
	.type	_fini,%function
	.type	main,%function
	.type	__uClibc_start_main,%function

_start:
	mr	r9,r1 	/* Save the stack pointer */
	clrrwi	r1,r1,4	/* Align stack ptr to 16 bytes */
	mr	r10,r1 	/* Pass aligned stack ptr */
#if defined L_Scrt1
	bl	_GLOBAL_OFFSET_TABLE_-4@local
	mflr	r31
#endif
	/* Set up an initial stack frame, and clear the LR.  */
	li	r0,0
	stwu	r1,-16(r1)
	mtlr	r0
	stw	r0,0(r1)
	/* find argc from the stack pointer */
	lwz	r4,0(r9)
	/* find argv one word offset from the stack pointer */
	addi	r5,r9,4
	/* find environment pointer (argv+argc+1) */
	lwz	r6,0(r9)
	addi	r6,r6,1
	rlwinm	r6,r6,2,0,29
	add	r6,r6,r5
	mr	r9,r7 /* Pass _dl_fini from ldso or NULL if statically linked */
	/* Ok, now run uClibc's main() -- shouldn't return */
# ifdef L_Scrt1
	lwz	r6,_init@got(r31)
	lwz	r7,_fini@got(r31)
	lwz	r3,main@got(r31)
	b	__uClibc_start_main@plt
# else
	lis     r6,_init@ha	# load top 16 bits
	addi    r6,r6,_init@l	# load bottom 16 bits
	lis     r7,_fini@ha	# load top 16 bits
	addi    r7,r7,_fini@l	# load bottom 16 bits
	lis     r3,main@ha	# load top 16 bits
	addi    r3,r3,main@l	# load bottom 16 bits
	b	__uClibc_start_main
# endif
.size _start,.-_start

/* Define a symbol for the first piece of initialized data.  */
	.data
	.globl __data_start
__data_start:
	.long 0
	.weak data_start
	data_start = __data_start