mirror of
https://git.busybox.net/uClibc
synced 2025-05-09 07:11:58 +08:00
dd4643de1c
These are the changes used in CodeSourcery's SH-2A uClinux Lite toolchains. Signed-off-by: Andrew Stubbs <ams@codesourcery.com>
157 lines
3.7 KiB
C
157 lines
3.7 KiB
C
/* Special .init and .fini section support for SH. Linuxthread version.
|
|
Copyright (C) 2000, 2001, 2003 Free Software Foundation, Inc.
|
|
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 Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
In addition to the permissions in the GNU Lesser General Public
|
|
License, the Free Software Foundation gives you unlimited
|
|
permission to link the compiled version of this file with other
|
|
programs, and to distribute those programs without any restriction
|
|
coming from the use of this file. (The Lesser General Public
|
|
License restrictions do apply in other respects; for example, they
|
|
cover modification of the file, and distribution when not linked
|
|
into another program.)
|
|
|
|
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 Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; see the file COPYING.LIB. If not,
|
|
write to the Free Software Foundation, 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
/* This file is compiled into assembly code which is then munged by a sed
|
|
script into two files: crti.s and crtn.s.
|
|
|
|
* crti.s puts a function prologue at the beginning of the
|
|
.init and .fini sections and defines global symbols for
|
|
those addresses, so they can be called as functions.
|
|
|
|
* crtn.s puts the corresponding function epilogues
|
|
in the .init and .fini sections. */
|
|
|
|
__asm__ ("\n\
|
|
\n\
|
|
#include \"defs.h\"\n\
|
|
\n\
|
|
/*@HEADER_ENDS*/\n\
|
|
\n\
|
|
/*@TESTS_BEGIN*/\n\
|
|
\n\
|
|
/*@TESTS_END*/\n\
|
|
\n\
|
|
/*@_init_PROLOG_BEGINS*/\n\
|
|
.section .init\n\
|
|
.align 5\n\
|
|
.global _init\n\
|
|
.type _init,@function\n\
|
|
_init:\n\
|
|
mov.l r12,@-r15\n\
|
|
mov.l r14,@-r15\n\
|
|
sts.l pr,@-r15\n"
|
|
#ifndef __SH_FDPIC__
|
|
" mova .L22,r0\n\
|
|
mov.l .L22,r12\n\
|
|
add r0,r12\n"
|
|
#endif
|
|
" mova .L24,r0\n\
|
|
mov.l .L24,r1\n\
|
|
add r0,r1\n\
|
|
jsr @r1\n\
|
|
nop\n"
|
|
#ifdef __SH_FDPIC__
|
|
/* r12 is caller save in FDPIC, so it must be reloaded
|
|
if the next PLT call is to work. */
|
|
" mov.l @(8,r15), r12\n"
|
|
#endif
|
|
" mova .L23,r0\n\
|
|
mov.l .L23,r1\n\
|
|
add r0,r1\n\
|
|
jsr @r1\n\
|
|
mov r15,r14\n\
|
|
bra 1f\n\
|
|
nop\n\
|
|
.align 2\n"
|
|
#ifndef __SH_FDPIC__
|
|
".L22:\n\
|
|
.long _GLOBAL_OFFSET_TABLE_\n"
|
|
#endif
|
|
".L23:\n\
|
|
.long __gmon_start__@PLT\n\
|
|
.L24:\n\
|
|
.long __pthread_initialize_minimal@PLT\n\
|
|
1:\n\
|
|
ALIGN\n\
|
|
END_INIT\n\
|
|
\n\
|
|
/*@_init_PROLOG_ENDS*/\n\
|
|
\n\
|
|
/*@_init_EPILOG_BEGINS*/\n\
|
|
.section .init\n\
|
|
mov r14,r15\n\
|
|
lds.l @r15+,pr\n\
|
|
mov.l @r15+,r14\n\
|
|
rts \n\
|
|
mov.l @r15+,r12\n\
|
|
END_INIT\n\
|
|
.section .text\n\
|
|
.align 5\n\
|
|
.weak __gmon_start__\n\
|
|
.type __gmon_start__,@function\n\
|
|
__gmon_start__:\n\
|
|
mov.l r14,@-r15\n\
|
|
mov r15,r14\n\
|
|
mov r14,r15\n\
|
|
rts \n\
|
|
mov.l @r15+,r14\n\
|
|
\n\
|
|
/*@_init_EPILOG_ENDS*/\n\
|
|
\n\
|
|
/*@_fini_PROLOG_BEGINS*/\n\
|
|
.section .fini\n\
|
|
.align 5\n\
|
|
.global _fini\n\
|
|
.type _fini,@function\n\
|
|
_fini:\n\
|
|
mov.l r12,@-r15\n\
|
|
mov.l r14,@-r15\n\
|
|
sts.l pr,@-r15\n"
|
|
#ifndef __SH_FDPIC__
|
|
" mova .L27,r0\n\
|
|
mov.l .L27,r12\n\
|
|
add r0,r12\n"
|
|
#endif
|
|
" mov r15,r14\n\
|
|
ALIGN\n\
|
|
END_FINI\n\
|
|
bra 1f\n\
|
|
nop\n\
|
|
.align 2\n"
|
|
#ifndef __SH_FDPIC__
|
|
".L27:\n\
|
|
.long _GLOBAL_OFFSET_TABLE_\n"
|
|
#endif
|
|
"1:\n\
|
|
/*@_fini_PROLOG_ENDS*/\n\
|
|
\n\
|
|
/*@_fini_EPILOG_BEGINS*/\n\
|
|
.section .fini\n\
|
|
mov r14,r15\n\
|
|
lds.l @r15+,pr\n\
|
|
mov.l @r15+,r14\n\
|
|
rts \n\
|
|
mov.l @r15+,r12\n\
|
|
\n\
|
|
END_FINI\n\
|
|
\n\
|
|
/*@_fini_EPILOG_ENDS*/\n\
|
|
\n\
|
|
/*@TRAILER_BEGINS*/\n\
|
|
");
|