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6a97b62a5b
GCC 4.8 enables -ftree-loop-distribute-patterns at -O3 by default and this optimization may transform loops into memset/memmove calls. Without proper handling this may generate unexpected PLT calls on GLIBC. This patch fixes by create memset/memmove alias to internal GLIBC __GI_memset/__GI_memmove symbols.
32 lines
1.4 KiB
C
32 lines
1.4 KiB
C
/* Hacks needed for symbol manipulation.
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Copyright (C) 2004-2013 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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#include_next "symbol-hacks.h"
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/* A very dirty trick: gcc emits references to __divdi3, __udivdi3,
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__moddi3, and __umoddi3. These functions are exported and
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therefore we get PLTs. Unnecessarily so. Changing gcc is a big
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task which might not be worth it so we play tricks with the
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assembler. */
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#if !defined __ASSEMBLER__ && !defined in_divdi3_c && !defined NOT_IN_libc && defined SHARED
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asm ("__divdi3 = __divdi3_internal");
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asm ("__udivdi3 = __udivdi3_internal");
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asm ("__moddi3 = __moddi3_internal");
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asm ("__umoddi3 = __umoddi3_internal");
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#endif
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