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36 lines
1.4 KiB
C
36 lines
1.4 KiB
C
/* Helpers for On-demand PLT fixup for shared objects. x86_64 version.
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Copyright (C) 2020-2024 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, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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/* The ABI calls for the PLT stubs to pass the index of the relocation
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and not its offset. In _dl_profile_fixup and _dl_audit_pltexit we
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also use the index. Therefore it is wasteful to compute the offset
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in the trampoline just to reverse the operation immediately
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afterwards. */
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static inline uintptr_t
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reloc_offset (uintptr_t plt0, uintptr_t pltn)
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{
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return pltn * sizeof (ElfW(Rela));
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}
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static inline uintptr_t
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reloc_index (uintptr_t plt0, uintptr_t pltn, size_t size)
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{
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return pltn;
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}
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