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48 lines
1.5 KiB
C
48 lines
1.5 KiB
C
/* Resolve function pointers to VDSO functions.
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Copyright (C) 2005-2013 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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#ifndef _LIBC_VDSO_H
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#define _LIBC_VDSO_H
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#ifdef SHARED
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extern void *__vdso_gettimeofday attribute_hidden;
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extern void *__vdso_clock_gettime;
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extern void *__vdso_clock_getres;
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extern void *__vdso_get_tbfreq;
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extern void *__vdso_getcpu;
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/* This macro is needed for PPC64 to return a skeleton OPD entry of a vDSO
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symbol. This works because _dl_vdso_vsym always return the function
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address, and no vDSO symbols use the TOC or chain pointers from the OPD
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so we can allow them to be garbage. */
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#if defined(__PPC64__) || defined(__powerpc64__)
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#define VDSO_IFUNC_RET(value) &value
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#else
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#define VDSO_IFUNC_RET(value) value
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#endif
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#endif
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#endif /* _LIBC_VDSO_H */
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