2 * libc/sysdeps/linux/v850/crt0.S -- Initial program entry point for linux/v850
4 * Copyright (C) 2001,02,03 NEC Electronics Corporation
5 * Copyright (C) 2001,02,03 Miles Bader <miles@gnu.org>
7 * This file is subject to the terms and conditions of the GNU Lesser
8 * General Public License. See the file COPYING.LIB in the main
9 * directory of this archive for more details.
11 * Written by Miles Bader <miles@gnu.org>
16 /* Upon entry, the stack contains the following data:
17 argc, argv[0], ..., argv[argc-1], 0, envp[0], ..., 0
22 ld.w 0[sp], r6 /* Arg 0: argc */
24 addi 4, sp, r7 /* Arg 1: argv */
26 mov r7, r8 /* Arg 2: envp */
27 mov r6, r10 /* skip argc elements to get envp start */
28 add 1, r10 /* ...plus the NULL at the end of argv */
29 shl 2, r10 /* Convert to byte-count to skip */
32 /* Load CTBP register */
33 mov hilo(C_SYMBOL_NAME(_ctbp)), r19
37 mov hilo(C_SYMBOL_NAME(_gp)), gp
39 /* tail-call uclibc's startup routine */
40 addi -24, sp, sp /* Stack space reserved for args */
41 jr C_SYMBOL_NAME(__uClibc_main)
44 /* Stick in a dummy reference to `main', so that if an application
45 is linking when the `main' function is in a static library (.a)
46 we can be sure that `main' actually gets linked in. */
47 L_dummy_main_reference:
48 .long C_SYMBOL_NAME(main)
50 /* Define a symbol for the first piece of initialized data. */
56 data_start = __data_start