93 lines
2.5 KiB
C
93 lines
2.5 KiB
C
/* Helper header for test-audit-threads.
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Copyright (C) 2018-2019 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library 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 GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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/* We use this helper to create a large number of functions, all of
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which will be resolved lazily and thus have their PLT updated.
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This is done to provide enough functions that we can statistically
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observe a thread vs. PLT resolution failure if one exists. */
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#define CONCAT(a, b) a ## b
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#define NUM(x, y) CONCAT (x, y)
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#define FUNC10(x) \
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FUNC (NUM (x, 0)); \
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FUNC (NUM (x, 1)); \
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FUNC (NUM (x, 2)); \
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FUNC (NUM (x, 3)); \
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FUNC (NUM (x, 4)); \
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FUNC (NUM (x, 5)); \
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FUNC (NUM (x, 6)); \
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FUNC (NUM (x, 7)); \
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FUNC (NUM (x, 8)); \
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FUNC (NUM (x, 9))
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#define FUNC100(x) \
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FUNC10 (NUM (x, 0)); \
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FUNC10 (NUM (x, 1)); \
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FUNC10 (NUM (x, 2)); \
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FUNC10 (NUM (x, 3)); \
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FUNC10 (NUM (x, 4)); \
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FUNC10 (NUM (x, 5)); \
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FUNC10 (NUM (x, 6)); \
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FUNC10 (NUM (x, 7)); \
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FUNC10 (NUM (x, 8)); \
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FUNC10 (NUM (x, 9))
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#define FUNC1000(x) \
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FUNC100 (NUM (x, 0)); \
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FUNC100 (NUM (x, 1)); \
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FUNC100 (NUM (x, 2)); \
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FUNC100 (NUM (x, 3)); \
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FUNC100 (NUM (x, 4)); \
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FUNC100 (NUM (x, 5)); \
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FUNC100 (NUM (x, 6)); \
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FUNC100 (NUM (x, 7)); \
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FUNC100 (NUM (x, 8)); \
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FUNC100 (NUM (x, 9))
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#define FUNC7000() \
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FUNC1000 (1); \
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FUNC1000 (2); \
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FUNC1000 (3); \
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FUNC1000 (4); \
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FUNC1000 (5); \
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FUNC1000 (6); \
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FUNC1000 (7);
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#ifdef FUNC
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# undef FUNC
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#endif
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#ifdef externnum
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# define FUNC(x) extern int CONCAT (retNum, x) (void)
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#endif
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#ifdef definenum
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# define FUNC(x) int CONCAT (retNum, x) (void) { return x; }
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#endif
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#ifdef callnum
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# define FUNC(x) CONCAT (retNum, x) (); sync_all (x)
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#endif
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/* A value of 7000 functions is chosen as an arbitrarily large
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number of functions that will allow us enough attempts to
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verify lazy resolution operation. */
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FUNC7000 ();
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