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- /* Special .init and .fini section support for Nios II.
- Copyright (C) 2012-2019 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 GNU 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.)
- Note that people who make modified versions of this file are not
- obligated to grant this special exception for their modified
- versions; it is their choice whether to do so. The GNU Lesser
- General Public License gives permission to release a modified
- version without this exception; this exception also makes it
- possible to release a modified version which carries forward this
- exception.
- 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. If not, see
- <http://www.gnu.org/licenses/>. */
- /* 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. The symbols _init and _fini are
- magic and cause the linker to emit DT_INIT and DT_FINI. */
- #include <libc-symbols.h>
- #ifndef PREINIT_FUNCTION
- # define PREINIT_FUNCTION __gmon_start__
- #endif
- #ifndef PREINIT_FUNCTION_WEAK
- # define PREINIT_FUNCTION_WEAK 1
- #endif
- #if PREINIT_FUNCTION_WEAK
- weak_extern (PREINIT_FUNCTION)
- #else
- .hidden PREINIT_FUNCTION
- #endif
- .section .init,"ax",@progbits
- .align 2
- .global _init
- .hidden _init
- .type _init, @function
- _init:
- addi sp, sp, -8
- stw r22, 0(sp)
- nextpc r22
- 1:
- movhi r8, %hiadj(_gp_got - 1b)
- addi r8, r8, %lo(_gp_got - 1b)
- add r22, r22, r8
- stw ra, 4(sp)
- #if PREINIT_FUNCTION_WEAK
- movhi r2, %got_hiadj(PREINIT_FUNCTION)
- addi r2, r2, %got_lo(PREINIT_FUNCTION)
- add r2, r2, r22
- ldw r2, 0(r2)
- beq r2, zero, .L5
- #endif
- movhi r2, %call_hiadj(PREINIT_FUNCTION)
- addi r2, r2, %call_lo(PREINIT_FUNCTION)
- add r2, r2, r22
- ldw r2, 0(r2)
- callr r2
- .L5:
- .section .fini,"ax",@progbits
- .align 2
- .global _fini
- .hidden _fini
- .type _fini, @function
- _fini:
- addi sp, sp, -8
- stw r22, 0(sp)
- nextpc r22
- 1:
- movhi r8, %hiadj(_gp_got - 1b)
- addi r8, r8, %lo(_gp_got - 1b)
- stw ra, 4(sp)
- add r22, r22, r8
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