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/*
 * libc/sysdeps/linux/v850/crt0.S -- Initial program entry point for linux/v850
 *
 *  Copyright (C) 2001,02,03  NEC Electronics Corporation
 *  Copyright (C) 2001,02,03  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
*/

        .text
C_ENTRY(start): 
        ld.w    0[sp], r6               // Arg 0: argc

        addi    4, sp, r7               // Arg 1: argv

        mov     r7, r8                  // Arg 2: envp
        mov     r6, r10                 // skip argc elements to get envp start
        add     1, r10                  // ...plus the NULL at the end of argv
        shl     2, r10                  // Convert to byte-count to skip
        add     r10, r8

        // Load CTBP register
        mov     hilo(C_SYMBOL_NAME(_ctbp)), r19
        ldsr    r19, ctbp

        // Load GP
        mov     hilo(C_SYMBOL_NAME(_gp)), gp

        // tail-call uclibc's startup routine
        addi    -24, sp, sp             // Stack space reserved for args
        jr      C_SYMBOL_NAME(__uClibc_main)


/* 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)