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/*-
* SPDX-License-Identifier: BSD-1-Clause
*
* Copyright 2012 Konstantin Belousov <kib@FreeBSD.org>
* Copyright (c) 2018, 2023 The FreeBSD Foundation
*
* Parts of this software was developed by Konstantin Belousov
* <kib@FreeBSD.org> under sponsorship from the FreeBSD Foundation.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/param.h>
#include <sys/elf.h>
#include <sys/elf_common.h>
#include <stdlib.h>
#include "libc_private.h"
extern void (*__preinit_array_start[])(int, char **, char **) __hidden;
extern void (*__preinit_array_end[])(int, char **, char **) __hidden;
extern void (*__init_array_start[])(int, char **, char **) __hidden;
extern void (*__init_array_end[])(int, char **, char **) __hidden;
extern void (*__fini_array_start[])(void) __hidden;
extern void (*__fini_array_end[])(void) __hidden;
extern void _fini(void) __hidden;
extern void _init(void) __hidden;
extern int _DYNAMIC;
#pragma weak _DYNAMIC
#if defined(CRT_IRELOC_RELA)
extern const Elf_Rela __rela_iplt_start[] __weak_symbol __hidden;
extern const Elf_Rela __rela_iplt_end[] __weak_symbol __hidden;
#include "reloc.c"
static void
process_irelocs(void)
{
const Elf_Rela *r;
for (r = &__rela_iplt_start[0]; r < &__rela_iplt_end[0]; r++)
crt1_handle_rela(r);
}
#elif defined(CRT_IRELOC_REL)
extern const Elf_Rel __rel_iplt_start[] __weak_symbol __hidden;
extern const Elf_Rel __rel_iplt_end[] __weak_symbol __hidden;
#include "reloc.c"
static void
process_irelocs(void)
{
const Elf_Rel *r;
for (r = &__rel_iplt_start[0]; r < &__rel_iplt_end[0]; r++)
crt1_handle_rel(r);
}
#elif defined(CRT_IRELOC_SUPPRESS)
#else
#error "Define platform reloc type"
#endif
#ifndef PIC
static void
finalizer(void)
{
void (*fn)(void);
size_t array_size, n;
array_size = __fini_array_end - __fini_array_start;
for (n = array_size; n > 0; n--) {
fn = __fini_array_start[n - 1];
if ((uintptr_t)fn != 0 && (uintptr_t)fn != 1)
(fn)();
}
_fini();
}
#endif
static void
handle_static_init(int argc, char **argv, char **env)
{
#ifndef PIC
void (*fn)(int, char **, char **);
size_t array_size, n;
if (&_DYNAMIC != NULL)
return;
atexit(finalizer);
array_size = __preinit_array_end - __preinit_array_start;
for (n = 0; n < array_size; n++) {
fn = __preinit_array_start[n];
if ((uintptr_t)fn != 0 && (uintptr_t)fn != 1)
fn(argc, argv, env);
}
_init();
array_size = __init_array_end - __init_array_start;
for (n = 0; n < array_size; n++) {
fn = __init_array_start[n];
if ((uintptr_t)fn != 0 && (uintptr_t)fn != 1)
fn(argc, argv, env);
}
#endif
}
static void
handle_argv(int argc, char *argv[], char **env)
{
const char *s;
if (environ == NULL)
environ = env;
if (argc > 0 && argv[0] != NULL) {
__progname = argv[0];
for (s = __progname; *s != '\0'; s++) {
if (*s == '/')
__progname = s + 1;
}
}
}
void
__libc_start1(int argc, char *argv[], char *env[], void (*cleanup)(void),
int (*mainX)(int, char *[], char *[]))
{
handle_argv(argc, argv, env);
if (&_DYNAMIC != NULL) {
atexit(cleanup);
} else {
#ifndef CRT_IRELOC_SUPPRESS
INIT_IRELOCS;
process_irelocs();
#endif
_init_tls();
}
handle_static_init(argc, argv, env);
exit(mainX(argc, argv, env));
}
/* XXXKIB _mcleanup and monstartup defs */
extern void _mcleanup(void);
extern void monstartup(void *, void *);
void
__libc_start1_gcrt(int argc, char *argv[], char *env[],
void (*cleanup)(void), int (*mainX)(int, char *[], char *[]),
int *eprolp, int *etextp)
{
handle_argv(argc, argv, env);
if (&_DYNAMIC != NULL) {
atexit(cleanup);
} else {
#ifndef CRT_IRELOC_SUPPRESS
INIT_IRELOCS;
process_irelocs();
#endif
_init_tls();
}
atexit(_mcleanup);
monstartup(eprolp, etextp);
handle_static_init(argc, argv, env);
exit(mainX(argc, argv, env));
}
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