mirror of
https://github.com/autc04/Retro68.git
synced 2024-12-04 16:50:57 +00:00
99 lines
2.6 KiB
ArmAsm
99 lines
2.6 KiB
ArmAsm
/* Copyright (C) 2000-2017 Free Software Foundation, Inc.
|
|
This file was adapted from glibc sources.
|
|
|
|
This file is part of GCC.
|
|
|
|
GCC is free software; you can redistribute it and/or modify it
|
|
under the terms of the GNU General Public License as published by the
|
|
Free Software Foundation; either version 3, or (at your option) any
|
|
later version.
|
|
|
|
GCC 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
|
|
General Public License for more details.
|
|
|
|
Under Section 7 of GPL version 3, you are granted additional
|
|
permissions described in the GCC Runtime Library Exception, version
|
|
3.1, as published by the Free Software Foundation.
|
|
|
|
You should have received a copy of the GNU General Public License and
|
|
a copy of the GCC Runtime Library Exception along with this program;
|
|
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#include "crt.h"
|
|
|
|
/* The code in sections .init and .fini is supposed to be a single
|
|
regular function. The function in .init is called directly from
|
|
start in crt1.S. The function in .fini is atexit()ed in crt1.S
|
|
too.
|
|
|
|
crti.S contributes the prologue of a function to these sections,
|
|
and crtn.S comes up the epilogue. STARTFILE_SPEC should list
|
|
crti.o before any other object files that might add code to .init
|
|
or .fini sections, and ENDFILE_SPEC should list crtn.o after any
|
|
such object files. */
|
|
|
|
.section .init
|
|
/* The alignment below can't be smaller, otherwise the mova below
|
|
breaks. Yes, we might align just the label, but then we'd be
|
|
exchanging an alignment here for one there, since the code fragment
|
|
below ensures 4-byte alignment on __ELF__. */
|
|
#ifdef __ELF__
|
|
.p2align 2
|
|
#else
|
|
.p2align 1
|
|
#endif
|
|
.global GLOBAL(_init)
|
|
GLOBAL(_init):
|
|
#ifdef __ELF__
|
|
mov.l r12,@-r15
|
|
mova 0f,r0
|
|
mov.l 0f,r12
|
|
#endif
|
|
mov.l r14,@-r15
|
|
#ifdef __ELF__
|
|
add r0,r12
|
|
#endif
|
|
sts.l pr,@-r15
|
|
#ifdef __ELF__
|
|
bra 1f
|
|
#endif
|
|
mov r15,r14
|
|
#ifdef __ELF__
|
|
0: .long _GLOBAL_OFFSET_TABLE_
|
|
1:
|
|
#endif
|
|
|
|
.section .fini
|
|
/* The alignment below can't be smaller, otherwise the mova below
|
|
breaks. Yes, we might align just the label, but then we'd be
|
|
exchanging an alignment here for one there, since the code fragment
|
|
below ensures 4-byte alignment on __ELF__. */
|
|
#ifdef __ELF__
|
|
.p2align 2
|
|
#else
|
|
.p2align 1
|
|
#endif
|
|
.global GLOBAL(_fini)
|
|
GLOBAL(_fini):
|
|
#ifdef __ELF__
|
|
mov.l r12,@-r15
|
|
mova 0f,r0
|
|
mov.l 0f,r12
|
|
#endif
|
|
mov.l r14,@-r15
|
|
#ifdef __ELF__
|
|
add r0,r12
|
|
#endif
|
|
sts.l pr,@-r15
|
|
#ifdef __ELF__
|
|
bra 1f
|
|
#endif
|
|
mov r15,r14
|
|
#ifdef __ELF__
|
|
0: .long _GLOBAL_OFFSET_TABLE_
|
|
1:
|
|
#endif
|