de30635eb6
A constructor or destructor function with an integral priority is
placed in an .init_array or .fini_array section with the priority
suffixed to the section name:
- __attribute__((constructor)) ==> .init_array
- __attribute__((constructor(42))) ==> .init_array.42
The suffixed init/fini sections appear before the unsuffixed sections,
so the prioritized functions appeared before the __{INIT,FINI}_ARRAY__
symbols and were dropped when the symbols were used.
The (static) linker doesn't recognize priority suffixes on
.preinit_array.
This bug affected .init_array and .fini_array for static executables.
For dynamic executables, only .fini_array was affected, because
.init_array is handled by the dynamic loader instead, which uses
DT_INIT_ARRAY[SZ]. For DSOs, neither is affected, because the two
sections are only handled by the dynamic loader.
This patch also fixes a minor inconsistency where dynamic init/preinit
were passed argc/argv/envp, but static were not.
Bug: http://b/170983066
Test: bionic-unit-tests
Change-Id: I0fffa776e5d9bdb6f8af06b4c1af148236742fef
66 lines
2.3 KiB
C
66 lines
2.3 KiB
C
/*
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* Copyright (C) 2008 The Android Open Source Project
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* All rights reserved.
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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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* * 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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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#pragma once
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#include <sys/cdefs.h>
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typedef void init_func_t(int, char*[], char*[]);
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typedef void fini_func_t(void);
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typedef struct {
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init_func_t** preinit_array;
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init_func_t** init_array;
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fini_func_t** fini_array;
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} structors_array_t;
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__BEGIN_DECLS
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extern int main(int argc, char** argv, char** env);
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__noreturn void __libc_init(void* raw_args,
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void (*onexit)(void),
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int (*slingshot)(int, char**, char**),
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structors_array_t const* const structors);
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__LIBC_HIDDEN__ void __libc_fini(void* finit_array);
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__END_DECLS
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#if defined(__cplusplus)
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__LIBC_HIDDEN__ void __libc_init_globals();
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__LIBC_HIDDEN__ void __libc_init_common();
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__LIBC_HIDDEN__ void __libc_init_AT_SECURE(char** envp);
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// The fork handler must be initialised after __libc_init_malloc, as
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// pthread_atfork may call malloc() during its once-init.
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__LIBC_HIDDEN__ void __libc_init_fork_handler();
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#endif
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