/* * libc/sysdeps/linux/microblaze/crt0.S -- Initial program entry point for linux/microblaze * *  Copyright (C) 2003       John Williams <jwilliams@itee.uq.edu.au> *  Copyright (C) 2001,2002  NEC Corporation *  Copyright (C) 2001,2002  Miles Bader <miles@gnu.org> * * This file is subject to the terms and conditions of the GNU Lesser * General Public License.  See the file COPYING.LIB in the main * directory of this archive for more details. * * Written by Miles Bader <miles@gnu.org> */#include <clinkage.h>/* Upon entry, the stack contains the following data:	argc, argv[0], ..., argv[argc-1], 0, envp[0], ..., 0*/	.textC_ENTRY(_start):	lw	r5, r0, r1		// Arg 0: argc	addi	r6, r1, 4		// Arg 1: argv					// Arg 2: envp	addi	r3, r5, 1		// skip argc elements to get envp start					// ...plus the NULL at the end of argv	add	r3, r3, r3		// Make word offset	add	r3, r3, r3	add	r7, r6, r3		// add to argv to get offset	// Load SDAs	la	r2, r0, C_SYMBOL_NAME(_SDA_BASE_)	la	r13, r0, C_SYMBOL_NAME(_SDA2_BASE_)	// tail-call uclibc's startup routine	brid	C_SYMBOL_NAME(__uClibc_main)	nop/* Stick in a dummy reference to `main', so that if an application   is linking when the `main' function is in a static library (.a)   we can be sure that `main' actually gets linked in.  */L_dummy_main_reference:	.long	C_SYMBOL_NAME(main)/* 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