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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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