b18e62b6da
Copyright on these files is held by kib@ and/or the Foundation, and both agree to this change. Approved by: kib
158 lines
4.2 KiB
C
158 lines
4.2 KiB
C
/*-
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* SPDX-License-Identifier: BSD-1-Clause
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*
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* Copyright 2012 Konstantin Belousov <kib@FreeBSD.org>
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* Copyright (c) 2018 The FreeBSD Foundation
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*
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* Parts of this software was developed by Konstantin Belousov
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* <kib@FreeBSD.org> under sponsorship from the FreeBSD Foundation.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/elf.h>
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#include <sys/elf_common.h>
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#include "notes.h"
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extern int main(int, char **, char **);
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extern void (*__preinit_array_start[])(int, char **, char **) __hidden;
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extern void (*__preinit_array_end[])(int, char **, char **) __hidden;
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extern void (*__init_array_start[])(int, char **, char **) __hidden;
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extern void (*__init_array_end[])(int, char **, char **) __hidden;
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extern void (*__fini_array_start[])(void) __hidden;
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extern void (*__fini_array_end[])(void) __hidden;
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extern void _fini(void) __hidden;
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extern void _init(void) __hidden;
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extern int _DYNAMIC;
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#pragma weak _DYNAMIC
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#if defined(CRT_IRELOC_RELA)
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extern const Elf_Rela __rela_iplt_start[] __weak_symbol __hidden;
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extern const Elf_Rela __rela_iplt_end[] __weak_symbol __hidden;
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#include "reloc.c"
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static void
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process_irelocs(void)
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{
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const Elf_Rela *r;
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for (r = &__rela_iplt_start[0]; r < &__rela_iplt_end[0]; r++)
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crt1_handle_rela(r);
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}
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#elif defined(CRT_IRELOC_REL)
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extern const Elf_Rel __rel_iplt_start[] __weak_symbol __hidden;
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extern const Elf_Rel __rel_iplt_end[] __weak_symbol __hidden;
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#include "reloc.c"
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static void
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process_irelocs(void)
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{
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const Elf_Rel *r;
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for (r = &__rel_iplt_start[0]; r < &__rel_iplt_end[0]; r++)
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crt1_handle_rel(r);
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}
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#elif defined(CRT_IRELOC_SUPPRESS)
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#else
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#error "Define platform reloc type"
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#endif
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char **environ;
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const char *__progname = "";
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static void
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finalizer(void)
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{
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void (*fn)(void);
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size_t array_size, n;
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array_size = __fini_array_end - __fini_array_start;
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for (n = array_size; n > 0; n--) {
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fn = __fini_array_start[n - 1];
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if ((uintptr_t)fn != 0 && (uintptr_t)fn != 1)
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(fn)();
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}
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_fini();
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}
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static inline void
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handle_static_init(int argc, char **argv, char **env)
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{
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void (*fn)(int, char **, char **);
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size_t array_size, n;
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if (&_DYNAMIC != NULL)
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return;
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atexit(finalizer);
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array_size = __preinit_array_end - __preinit_array_start;
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for (n = 0; n < array_size; n++) {
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fn = __preinit_array_start[n];
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if ((uintptr_t)fn != 0 && (uintptr_t)fn != 1)
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fn(argc, argv, env);
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}
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_init();
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array_size = __init_array_end - __init_array_start;
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for (n = 0; n < array_size; n++) {
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fn = __init_array_start[n];
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if ((uintptr_t)fn != 0 && (uintptr_t)fn != 1)
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fn(argc, argv, env);
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}
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}
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static inline void
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handle_argv(int argc, char *argv[], char **env)
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{
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const char *s;
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if (environ == NULL)
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environ = env;
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if (argc > 0 && argv[0] != NULL) {
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__progname = argv[0];
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for (s = __progname; *s != '\0'; s++) {
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if (*s == '/')
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__progname = s + 1;
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}
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}
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}
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static const struct {
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int32_t namesz;
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int32_t descsz;
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int32_t type;
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char name[sizeof(NOTE_FREEBSD_VENDOR)];
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uint32_t desc;
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} crt_noinit_tag __attribute__ ((section (NOTE_SECTION),
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aligned(4))) __used = {
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.namesz = sizeof(NOTE_FREEBSD_VENDOR),
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.descsz = sizeof(uint32_t),
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.type = NT_FREEBSD_NOINIT_TAG,
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.name = NOTE_FREEBSD_VENDOR,
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.desc = 0
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};
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