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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)
- /* 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
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