52 lines
2.2 KiB
C++
52 lines
2.2 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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// This shared object tests TPREL relocations in the dynamic linker. It's always
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// part of static TLS.
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// For accesses to these variables, the bfd and lld linkers generate a TPREL
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// relocation with no symbol but a non-zero addend.
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__attribute__((tls_model("initial-exec"))) static __thread int tls_var_1 = 3;
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__attribute__((tls_model("initial-exec"))) static __thread int tls_var_2 = 7;
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extern "C" int bump_static_tls_var_1() {
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return ++tls_var_1;
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}
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extern "C" int bump_static_tls_var_2() {
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return ++tls_var_2;
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}
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__attribute__((tls_model("initial-exec"), weak)) extern "C" __thread int missing_weak_tls;
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extern "C" int* missing_weak_tls_addr() {
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// The dynamic linker should resolve a TPREL relocation to this symbol to 0,
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// which this function adds to the thread pointer.
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return &missing_weak_tls;
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}
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