glibc/sysdeps/wordsize-32/divdi3-symbol-hacks.h
H.J. Lu b0a33dc967 Disable symbol hack in libc_nonshared.a
Don't reference __GI_memmove, __GI_memset, __GI_memcpy, __divdi3_internal,
__udivdi3_internal and __moddi3_internal in libc_nonshared.a.
2021-09-27 07:46:25 -07:00

33 lines
1.4 KiB
C

/* Hacks needed for divdi3 symbol manipulation.
Copyright (C) 2004-2021 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
/* A very dirty trick: gcc emits references to __divdi3, __udivdi3,
__moddi3, and __umoddi3. These functions are exported and
therefore we get PLTs. Unnecessarily so. Changing gcc is a big
task which might not be worth it so we play tricks with the
assembler.
Note: in_divdi3_c is only used to avoid symbol alias on divdi3
build itself. */
#if !defined __ASSEMBLER__ && !defined in_divdi3_c && IS_IN (libc) \
&& defined SHARED && !defined LIBC_NONSHARED
asm ("__divdi3 = __divdi3_internal");
asm ("__udivdi3 = __udivdi3_internal");
asm ("__moddi3 = __moddi3_internal");
asm ("__umoddi3 = __umoddi3_internal");
#endif