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225 lines
4.4 KiB
C++
225 lines
4.4 KiB
C++
// tls_test.cc -- test TLS variables for gold
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// Copyright (C) 2006-2017 Free Software Foundation, Inc.
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// Written by Ian Lance Taylor <iant@google.com>.
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// This file is part of gold.
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 3 of the License, or
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// (at your option) any later version.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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// MA 02110-1301, USA.
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// This provides a set of test functions for TLS variables. The
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// functions are called by a main function in tls_test_main.cc. This
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// lets us test TLS access from a shared library. We currently don't
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// bother to test TLS access between two different files, on the
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// theory that that is no more complicated than ordinary variable
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// access between files.
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// We start two threads, and stop the second one. Then we run the
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// first thread through the following cases. Then we let the second
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// thread continue, and run it through the same set of cases. All the
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// actual thread manipulation is in tls_test_main.cc.
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// 1 Access to an uninitialized global thread variable.
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// 2 Access to an uninitialized static thread variable.
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// 3 Access to an initialized global thread variable.
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// 4 Access to an initialized static thread variable.
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// 5 Taking the address of a global thread variable.
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// 6 Taking the address of a static thread variable.
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// 8 Like test 1, but with the thread variable defined in another file.
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// 9 Like test 3, but with the thread variable defined in another file.
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// 10 Like test 5, but with the thread variable defined in another file.
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// last Verify that the above tests left the variables set correctly.
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#include "config.h"
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#include <cstdio>
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#include "tls_test.h"
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#define CHECK_EQ_OR_RETURN(var, expected) \
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do \
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{ \
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if ((var) != (expected)) \
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{ \
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printf(#var ": expected %d, found %d\n", expected, var); \
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return false; \
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} \
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} \
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while (0)
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__thread int v1;
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static __thread int v2;
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// We don't use these pointers, but putting them in tests alignment on
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// a 64-bit target.
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__thread char* p1;
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char dummy;
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__thread char* p2 = &dummy;
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__thread int v3 = 3;
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static __thread int v4 = 4;
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__thread int v5;
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static __thread int v6;
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struct int128
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{
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long long hi;
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long long lo;
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};
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static __thread struct int128 v12 = { 115, 125 };
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bool
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t1()
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{
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CHECK_EQ_OR_RETURN(v1, 0);
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v1 = 10;
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return true;
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}
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bool
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t2()
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{
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CHECK_EQ_OR_RETURN(v2, 0);
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v2 = 20;
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return true;
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}
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bool
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t3()
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{
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CHECK_EQ_OR_RETURN(v3, 3);
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v3 = 30;
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return true;
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}
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bool
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t4()
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{
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CHECK_EQ_OR_RETURN(v4, 4);
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v4 = 40;
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return true;
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}
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// For test 5 the main function calls f5b(f5a()), then calls t5().
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int*
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f5a()
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{
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return &v5;
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}
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void
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f5b(int* p)
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{
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*p = 50;
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}
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bool
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t5()
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{
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CHECK_EQ_OR_RETURN(v5, 50);
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return true;
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}
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// For test 6 the main function calls f6b(f6a()), then calls t6().
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int*
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f6a()
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{
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return &v6;
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}
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void
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f6b(int* p)
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{
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*p = 60;
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}
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bool
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t6()
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{
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CHECK_EQ_OR_RETURN(v6, 60);
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return true;
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}
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// The slot for t7() is unused.
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bool
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t8()
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{
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CHECK_EQ_OR_RETURN(o1, 0);
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o1 = -10;
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return true;
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}
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bool
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t9()
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{
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CHECK_EQ_OR_RETURN(o2, -2);
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o2 = -20;
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return true;
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}
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// For test 10 the main function calls f10b(f10a()), then calls t10().
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int*
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f10a()
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{
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return &o3;
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}
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void
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f10b(int* p)
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{
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*p = -30;
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}
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bool
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t10()
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{
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CHECK_EQ_OR_RETURN(o3, -30);
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return true;
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}
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bool
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t12()
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{
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struct int128 newval = { 335, 345 };
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CHECK_EQ_OR_RETURN((int) v12.hi, 115);
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CHECK_EQ_OR_RETURN((int) v12.lo, 125);
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v12 = newval;
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return true;
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}
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bool
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t_last()
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{
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CHECK_EQ_OR_RETURN(v1, 10);
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CHECK_EQ_OR_RETURN(v2, 20);
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CHECK_EQ_OR_RETURN(v3, 30);
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CHECK_EQ_OR_RETURN(v4, 40);
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CHECK_EQ_OR_RETURN(v5, 50);
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CHECK_EQ_OR_RETURN(v6, 60);
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CHECK_EQ_OR_RETURN((int) v12.hi, 335);
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CHECK_EQ_OR_RETURN((int) v12.lo, 345);
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CHECK_EQ_OR_RETURN(o1, -10);
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CHECK_EQ_OR_RETURN(o2, -20);
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CHECK_EQ_OR_RETURN(o3, -30);
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int check = t11_last();
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CHECK_EQ_OR_RETURN(check, 1);
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return true;
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}
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