70 lines
2.4 KiB
C
70 lines
2.4 KiB
C
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/*
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* Copyright (C) 2019 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 <link.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <utility>
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#include <vector>
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#include "linker_common_types.h"
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#include "linker_globals.h"
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#include "linker_soinfo.h"
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static constexpr ElfW(Versym) kVersymHiddenBit = 0x8000;
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enum RelocationKind {
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kRelocAbsolute = 0,
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kRelocRelative,
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kRelocSymbol,
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kRelocSymbolCached,
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kRelocMax
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};
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void count_relocation(RelocationKind kind);
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template <bool Enabled> void count_relocation_if(RelocationKind kind) {
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if (Enabled) count_relocation(kind);
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}
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void print_linker_stats();
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inline bool is_symbol_global_and_defined(const soinfo* si, const ElfW(Sym)* s) {
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if (__predict_true(ELF_ST_BIND(s->st_info) == STB_GLOBAL ||
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ELF_ST_BIND(s->st_info) == STB_WEAK)) {
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return s->st_shndx != SHN_UNDEF;
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} else if (__predict_false(ELF_ST_BIND(s->st_info) != STB_LOCAL)) {
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DL_WARN("Warning: unexpected ST_BIND value: %d for \"%s\" in \"%s\" (ignoring)",
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ELF_ST_BIND(s->st_info), si->get_string(s->st_name), si->get_realpath());
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}
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return false;
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}
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