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/* Startup code for SH5 & ELF.
Copyright (C) 1999 Free Software Foundation, Inc.
Copyright (C) 2001 Hewlett-Packard Australia
This file is part of the GNU C Library.
The GNU C Library 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.
The GNU C Library 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 the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
/* This is the canonical entry point, usually the first thing in the text
segment.
At this entry point, most registers' values are unspecified, except:
sp The stack contains the arguments and environment:
0(sp) argc
4(sp) argv[0]
...
(4*argc)(sp) NULL
(4*(argc+1))(sp) envp[0]
...
NULL
*/
.file "crt0.S"
.globl _start
.globl __main
.type __uClibc_start_main,@function
.section .text64,"xa"
.align 2 /* 2^2 = 4 */
_start:
/* Clear the frame pointer since this is the outermost frame. */
### mov #0, r14 # qqq
/* Pop argc off the stack and save a pointer to argv */
ld.l r15, 0, r2 /* argc */
addi r15, 4, r3 /* argv */
/* set up the value for the environment pointer r4 = (argc+1)*4+argv */
addi r2, 1, r4 /* envp = argc + 1 */
shlli r4, 2, r4 /* envp = envp * 4 */
add r3, r4, r4 /* envp = envp + argv */
/* call main() */
movi __uClibc_start_main,r17
ptabs/l r17,tr0
blink tr0,r18
/* should never get here....*/
### movi abort@lh,r17
### shori abort@ll,r17
ptabs/l r17,tr0
blink tr0,r63 /* call abort() => (r63) do not come back ... */
/*
* The following is a stub to stop the GNU toolchain
* from calling its C-RTL initialization routines.
*/
__main:
ptabs/l r18,tr0
blink tr0,r63
/* 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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