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-/* Special .init and .fini section support for Alpha.
- Copyright (C) 2001-2017 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.
-
- This differs from what would be generated for ordinary code in that
- we save and restore the GP within the function. In order for linker
- relaxation to work, the value in the GP register on exit from a function
- must be valid for the function entry point. Normally, a function is
- contained within one object file and this is not an issue, provided
- that the function reloads the gp after making any function calls.
- However, _init and _fini are constructed from pieces of many object
- files, all of which may have different GP values. So we must reload
- the GP value from crti.o in crtn.o. */
-
-#include <libc-symbols.h>
-#include <sysdep.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
- .globl _init
- .type _init, @function
- .usepv _init, std
-_init:
- ldgp $29, 0($27)
- subq $30, 16, $30
-#if PREINIT_FUNCTION_WEAK
- lda $27, PREINIT_FUNCTION
-#endif
- stq $26, 0($30)
- stq $29, 8($30)
-#if PREINIT_FUNCTION_WEAK
- beq $27, 1f
- jsr $26, ($27), PREINIT_FUNCTION
- ldq $29, 8($30)
-1:
-#else
- bsr $26, PREINIT_FUNCTION !samegp
-#endif
- .p2align 3
-
- .section .fini, "ax", @progbits
- .globl _fini
- .type _fini,@function
- .usepv _fini,std
-_fini:
- ldgp $29, 0($27)
- subq $30, 16, $30
- stq $26, 0($30)
- stq $29, 8($30)
- .p2align 3