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author | Joseph Myers <joseph@codesourcery.com> | 2017-11-17 22:01:43 +0000 |
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committer | Joseph Myers <joseph@codesourcery.com> | 2017-11-17 22:01:43 +0000 |
commit | 015c6dc288003cd6b192f5901a8df2ea16205ee4 (patch) | |
tree | fe864d1d425b88fe43d51127590599f64c45a7ea /sysdeps/powerpc/bits | |
parent | ce003e5d4cd94c5380699b0dadeaaf825813afbe (diff) | |
download | glibc-015c6dc288003cd6b192f5901a8df2ea16205ee4.zip glibc-015c6dc288003cd6b192f5901a8df2ea16205ee4.tar.gz glibc-015c6dc288003cd6b192f5901a8df2ea16205ee4.tar.bz2 |
Support bits/floatn.h inclusion from .S files.
Further _FloatN / _FloatNx type alias support will involve making
architecture-specific .S files use the common macros for libm function
aliases. Making them use those macros will also serve to simplify
existing code for aliases / symbol versions in various cases, similar
to such simplifications for ldbl-opt code.
The libm-alias-*.h files sometimes need to include <bits/floatn.h> to
determine which aliases they should define. At present, this does not
work for inclusion from .S files because <bits/floatn.h> can define
typedefs for old compilers. This patch changes all the
<bits/floatn.h> and <bits/floatn-common.h> headers to include
__ASSEMBLER__ conditionals. Those conditionals disable everything
related to C syntax in the __ASSEMBLER__ case, not just the problem
typedefs, as that seemed cleanest. The __HAVE_* definitions remain in
the __ASSEMBLER__ case, as those provide information that is required
to define the correct set of aliases.
Tested with build-many-glibcs.py for a representative set of
configurations (x86_64-linux-gnu i686-linux-gnu ia64-linux-gnu
powerpc64le-linux-gnu mips64-linux-gnu-n64 sparc64-linux-gnu) with GCC
6. Also tested with GCC 6 for i686-linux-gnu in conjunction with
changes to use alias macros in .S files.
* bits/floatn-common.h [!__ASSEMBLER]: Disable everything related
to C syntax instead of availability and properties of types.
* bits/floatn.h [!__ASSEMBLER]: Likewise.
* sysdeps/ia64/bits/floatn.h [!__ASSEMBLER]: Likewise.
* sysdeps/ieee754/ldbl-128/bits/floatn.h [!__ASSEMBLER]: Likewise.
* sysdeps/mips/ieee754/bits/floatn.h [!__ASSEMBLER]: Likewise.
* sysdeps/powerpc/bits/floatn.h [!__ASSEMBLER]: Likewise.
* sysdeps/x86/bits/floatn.h [!__ASSEMBLER]: Likewise.
Diffstat (limited to 'sysdeps/powerpc/bits')
-rw-r--r-- | sysdeps/powerpc/bits/floatn.h | 60 |
1 files changed, 32 insertions, 28 deletions
diff --git a/sysdeps/powerpc/bits/floatn.h b/sysdeps/powerpc/bits/floatn.h index a293bfc..09a1c30 100644 --- a/sysdeps/powerpc/bits/floatn.h +++ b/sysdeps/powerpc/bits/floatn.h @@ -40,63 +40,67 @@ # define __HAVE_DISTINCT_FLOAT128 0 #endif +#ifndef __ASSEMBLER__ + /* Defined to concatenate the literal suffix to be used with _Float128 types, if __HAVE_FLOAT128 is 1. */ -#if __HAVE_FLOAT128 -# if !__GNUC_PREREQ (7, 0) || defined __cplusplus +# if __HAVE_FLOAT128 +# if !__GNUC_PREREQ (7, 0) || defined __cplusplus /* The literal suffix (f128) exist for powerpc only since GCC 7.0. */ -# define __f128(x) x##q -# else -# define __f128(x) x##f128 +# define __f128(x) x##q +# else +# define __f128(x) x##f128 +# endif # endif -#endif /* Defined to a complex binary128 type if __HAVE_FLOAT128 is 1. */ -#if __HAVE_FLOAT128 -# if !__GNUC_PREREQ (7, 0) || defined __cplusplus +# if __HAVE_FLOAT128 +# if !__GNUC_PREREQ (7, 0) || defined __cplusplus /* Add a typedef for older GCC compilers which don't natively support _Complex _Float128. */ typedef _Complex float __cfloat128 __attribute__ ((__mode__ (__KC__))); -# define __CFLOAT128 __cfloat128 -# else -# define __CFLOAT128 _Complex _Float128 +# define __CFLOAT128 __cfloat128 +# else +# define __CFLOAT128 _Complex _Float128 +# endif # endif -#endif /* The remaining of this file provides support for older compilers. */ -#if __HAVE_FLOAT128 +# if __HAVE_FLOAT128 /* The type _Float128 exist for powerpc only since GCC 7.0. */ -# if !__GNUC_PREREQ (7, 0) || defined __cplusplus +# if !__GNUC_PREREQ (7, 0) || defined __cplusplus typedef __float128 _Float128; -# endif +# endif /* Builtin __builtin_huge_valf128 doesn't exist before GCC 7.0. */ -# if !__GNUC_PREREQ (7, 0) -# define __builtin_huge_valf128() ((_Float128) __builtin_huge_val ()) -# endif +# if !__GNUC_PREREQ (7, 0) +# define __builtin_huge_valf128() ((_Float128) __builtin_huge_val ()) +# endif /* The following builtins (suffixed with 'q') are available in GCC >= 6.2, which is the minimum version required for float128 support on powerpc64le. Since GCC 7.0 the builtins suffixed with f128 are also available, then there is no need to redefined them. */ -# if !__GNUC_PREREQ (7, 0) -# define __builtin_copysignf128 __builtin_copysignq -# define __builtin_fabsf128 __builtin_fabsq -# define __builtin_inff128 __builtin_infq -# define __builtin_nanf128 __builtin_nanq -# define __builtin_nansf128 __builtin_nansq -# endif +# if !__GNUC_PREREQ (7, 0) +# define __builtin_copysignf128 __builtin_copysignq +# define __builtin_fabsf128 __builtin_fabsq +# define __builtin_inff128 __builtin_infq +# define __builtin_nanf128 __builtin_nanq +# define __builtin_nansf128 __builtin_nansq +# endif /* In math/math.h, __MATH_TG will expand signbit to __builtin_signbit*, e.g.: __builtin_signbitf128, before GCC 6. However, there has never been a __builtin_signbitf128 in GCC and the type-generic builtin is only available since GCC 6. */ -# if !__GNUC_PREREQ (6, 0) -# define __builtin_signbitf128 __signbitf128 +# if !__GNUC_PREREQ (6, 0) +# define __builtin_signbitf128 __signbitf128 +# endif + # endif -#endif +#endif /* !__ASSEMBLER__. */ #include <bits/floatn-common.h> |