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39 lines
1.5 KiB
C
39 lines
1.5 KiB
C
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/* Symbol rediretion for loader/static initialization code.
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Copyright (C) 2022 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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<https://www.gnu.org/licenses/>. */
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#ifndef _DL_IFUNC_GENERIC_H
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#define _DL_IFUNC_GENERIC_H
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/* The compiler might optimize loops or other constructs to library calls even
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in freestanding mode. Although it is safe in most scenarios, on program
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loading and static startup, iFUNC resolution might require other dynamic
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relocation that are not yet done.
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Instead of adding per-file compiler flags to avoid the libcall generation,
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this header defines generic symbols that will be routed instead of the
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default symbols name.
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Each port can then make the required redirection to the expected generic
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implementation if the symbol is provided as iFUNC, with a global definition
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such as:
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asm ("memset = __memset_generic");
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*/
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#endif
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