diff options
Diffstat (limited to 'sysdeps/x86/init-arch.h')
-rw-r--r-- | sysdeps/x86/init-arch.h | 75 |
1 files changed, 0 insertions, 75 deletions
diff --git a/sysdeps/x86/init-arch.h b/sysdeps/x86/init-arch.h deleted file mode 100644 index 15d3f0975d..0000000000 --- a/sysdeps/x86/init-arch.h +++ /dev/null @@ -1,75 +0,0 @@ -/* This file is part of the GNU C Library. - Copyright (C) 2008-2017 Free Software Foundation, Inc. - - 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 - <http://www.gnu.org/licenses/>. */ - -#ifdef __ASSEMBLER__ -# include <cpu-features.h> -#else -# include <ldsodefs.h> -#endif - -/* These macros are used to implement ifunc selection in C. To implement - an ifunc function, foo, which returns the address of __foo_sse2 or - __foo_avx2: - - #define foo __redirect_foo - #define __foo __redirect___foo - #include <foo.h> - #undef foo - #undef __foo - #define SYMBOL_NAME foo - #include <init-arch.h> - - extern __typeof (REDIRECT_NAME) OPTIMIZE (sse2) attribute_hidden; - extern __typeof (REDIRECT_NAME) OPTIMIZE (avx2) attribute_hidden; - - static inline void * - foo_selector (void) - { - if (use AVX2) - return OPTIMIZE (avx2); - - return OPTIMIZE (sse2); - } - - libc_ifunc_redirected (__redirect_foo, foo, foo_selector ()); - -*/ - -#define PASTER1(x,y) x##_##y -#define EVALUATOR1(x,y) PASTER1 (x,y) -#define PASTER2(x,y) __##x##_##y -#define EVALUATOR2(x,y) PASTER2 (x,y) - -/* Basically set '__redirect_<symbol>' to use as type definition, - '__<symbol>_<variant>' as the optimized implementation and - '<symbol>_ifunc_selector' as the IFUNC selector. */ -#define REDIRECT_NAME EVALUATOR1 (__redirect, SYMBOL_NAME) -#define OPTIMIZE(name) EVALUATOR2 (SYMBOL_NAME, name) -#define IFUNC_SELECTOR EVALUATOR1 (SYMBOL_NAME, ifunc_selector) - -#ifndef __x86_64__ -/* Due to the reordering and the other nifty extensions in i686, it is - not really good to use heavily i586 optimized code on an i686. It's - better to use i486 code if it isn't an i586. */ -# if MINIMUM_ISA == 686 -# define USE_I586 0 -# define USE_I686 1 -# else -# define USE_I586 (HAS_ARCH_FEATURE (I586) && !HAS_ARCH_FEATURE (I686)) -# define USE_I686 HAS_ARCH_FEATURE (I686) -# endif -#endif |