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9ed2e15ff4
This patch continues cleaning up math_private.h by moving the math_opt_barrier and math_force_eval macros to a separate header math-barriers.h. At present, those macros are inside a "#ifndef math_opt_barrier" in math_private.h to allow architectures to override them and then use a separate math-barriers.h header, no such #ifndef or #include_next is needed; architectures just have their own alternative version of math-barriers.h when providing their own optimized versions that avoid going through memory unnecessarily. The generic math-barriers.h has a comment added to document these two macros. In this patch, math_private.h is made to #include <math-barriers.h>, so files using these macros do not need updating yet. That is because of uses of math_force_eval in math_check_force_underflow and math_check_force_underflow_nonneg, which are still defined in math_private.h. Once those are moved out to a separate header, that separate header can be made to include <math-barriers.h>, as can the other files directly using these barrier macros, and then the include of <math-barriers.h> from math_private.h can be removed. Tested for x86_64 and x86. Also tested with build-many-glibcs.py that installed stripped shared libraries are unchanged by this patch. * sysdeps/generic/math-barriers.h: New file. * sysdeps/generic/math_private.h [!math_opt_barrier] (math_opt_barrier): Move to math-barriers.h. [!math_opt_barrier] (math_force_eval): Likewise. * sysdeps/aarch64/fpu/math-barriers.h: New file. * sysdeps/aarch64/fpu/math_private.h (math_opt_barrier): Move to math-barriers.h. (math_force_eval): Likewise. * sysdeps/alpha/fpu/math-barriers.h: New file. * sysdeps/alpha/fpu/math_private.h (math_opt_barrier): Move to math-barriers.h. (math_force_eval): Likewise. * sysdeps/x86/fpu/math-barriers.h: New file. * sysdeps/i386/fpu/fenv_private.h (math_opt_barrier): Move to math-barriers.h. (math_force_eval): Likewise. * sysdeps/m68k/m680x0/fpu/math_private.h: Move to.... * sysdeps/m68k/m680x0/fpu/math-barriers.h: ... here. Adjust multiple-include guard for rename. * sysdeps/powerpc/fpu/math-barriers.h: New file. * sysdeps/powerpc/fpu/math_private.h (math_opt_barrier): Move to math-barriers.h. (math_force_eval): Likewise.
124 lines
2.7 KiB
C
124 lines
2.7 KiB
C
/* Private inline math functions for powerpc.
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Copyright (C) 2006-2018 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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#ifndef _PPC_MATH_PRIVATE_H_
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#define _PPC_MATH_PRIVATE_H_
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#include <sysdep.h>
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#include <ldsodefs.h>
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#include <dl-procinfo.h>
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#include <fenv_private.h>
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#include_next <math_private.h>
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#if defined _ARCH_PWR9 && __HAVE_DISTINCT_FLOAT128
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extern __always_inline _Float128
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__ieee754_sqrtf128 (_Float128 __x)
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{
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_Float128 __z;
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asm ("xssqrtqp %0,%1" : "=v" (__z) : "v" (__x));
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return __z;
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}
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#endif
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#if defined _ARCH_PWR5X
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# ifndef __round
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# define __round(x) \
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({ double __z; \
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__asm __volatile ( \
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" frin %0,%1\n" \
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: "=f" (__z) \
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: "f" (x)); \
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__z; })
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# endif
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# ifndef __roundf
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# define __roundf(x) \
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({ float __z; \
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__asm __volatile ( \
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" frin %0,%1\n" \
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" frsp %0,%0\n" \
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: "=f" (__z) \
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: "f" (x)); \
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__z; })
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# endif
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# ifndef __trunc
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# define __trunc(x) \
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({ double __z; \
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__asm __volatile ( \
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" friz %0,%1\n" \
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: "=f" (__z) \
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: "f" (x)); \
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__z; })
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# endif
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# ifndef __truncf
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# define __truncf(x) \
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({ float __z; \
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__asm __volatile ( \
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" friz %0,%1\n" \
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" frsp %0,%0\n" \
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: "=f" (__z) \
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: "f" (x)); \
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__z; })
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# endif
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# ifndef __ceil
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# define __ceil(x) \
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({ double __z; \
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__asm __volatile ( \
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" frip %0,%1\n" \
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: "=f" (__z) \
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: "f" (x)); \
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__z; })
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# endif
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# ifndef __ceilf
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# define __ceilf(x) \
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({ float __z; \
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__asm __volatile ( \
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" frip %0,%1\n" \
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" frsp %0,%0\n" \
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: "=f" (__z) \
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: "f" (x)); \
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__z; })
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# endif
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# ifndef __floor
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# define __floor(x) \
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({ double __z; \
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__asm __volatile ( \
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" frim %0,%1\n" \
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: "=f" (__z) \
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: "f" (x)); \
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__z; })
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# endif
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# ifndef __floorf
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# define __floorf(x) \
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({ float __z; \
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__asm __volatile ( \
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" frim %0,%1\n" \
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" frsp %0,%0\n" \
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: "=f" (__z) \
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: "f" (x)); \
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__z; })
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# endif
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#endif /* defined _ARCH_PWR5X */
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#endif /* _PPC_MATH_PRIVATE_H_ */
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