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1/*
2 * This file is part of the coreboot project.
3 *
4 * Copyright (C) 2009 coresystems GmbH
5 *
5b8031cc 6 * SPDX-License-Identifier: GPL-2.0
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7 */
8
9#ifdef __GNUC__
10
11/*
12 * GCC's libgcc handling is quite broken. While the libgcc functions
13 * are always regparm(0) the code that calls them uses whatever the
14 * compiler call specifies. Therefore we need a wrapper around those
15 * functions. See gcc bug PR41055 for more information.
16 */
17#define WRAP_LIBGCC_CALL(type, name) \
18 type __normal_##name(type a, type b) __attribute__((regparm(0))); \
19 type __wrap_##name(type a, type b); \
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20 type __attribute__((no_instrument_function)) \
21 __wrap_##name(type a, type b) \
22 { return __normal_##name(a, b); }
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23
24WRAP_LIBGCC_CALL(long long, __divdi3)
25WRAP_LIBGCC_CALL(unsigned long long, __udivdi3)
26WRAP_LIBGCC_CALL(long long, __moddi3)
27WRAP_LIBGCC_CALL(unsigned long long, __umoddi3)
28
29#endif