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authorJoseph Myers <joseph@codesourcery.com>2017-11-17 22:01:43 +0000
committerJoseph Myers <joseph@codesourcery.com>2017-11-17 22:01:43 +0000
commit015c6dc288003cd6b192f5901a8df2ea16205ee4 (patch)
treefe864d1d425b88fe43d51127590599f64c45a7ea /sysdeps/ia64
parentce003e5d4cd94c5380699b0dadeaaf825813afbe (diff)
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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/ia64')
-rw-r--r--sysdeps/ia64/bits/floatn.h60
1 files changed, 32 insertions, 28 deletions
diff --git a/sysdeps/ia64/bits/floatn.h b/sysdeps/ia64/bits/floatn.h
index a88d0f9..d0aeb3f 100644
--- a/sysdeps/ia64/bits/floatn.h
+++ b/sysdeps/ia64/bits/floatn.h
@@ -40,64 +40,68 @@
# 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 exists 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__ (__TC__)));
-# 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 exists 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_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
/* Older GCC has only a subset of built-in functions for _Float128 on
ia64, and __builtin_infq is not usable in static initializers.
Converting a narrower sNaN to _Float128 produces a quiet NaN, so
attempts to use _Float128 sNaNs will not work properly with older
compilers. */
-# if !__GNUC_PREREQ (7, 0)
-# define __builtin_copysignf128 __builtin_copysignq
-# define __builtin_fabsf128 __builtin_fabsq
-# define __builtin_inff128() ((_Float128) __builtin_inf ())
-# define __builtin_nanf128(x) ((_Float128) __builtin_nan (x))
-# define __builtin_nansf128(x) ((_Float128) __builtin_nans (x))
-# endif
+# if !__GNUC_PREREQ (7, 0)
+# define __builtin_copysignf128 __builtin_copysignq
+# define __builtin_fabsf128 __builtin_fabsq
+# define __builtin_inff128() ((_Float128) __builtin_inf ())
+# define __builtin_nanf128(x) ((_Float128) __builtin_nan (x))
+# define __builtin_nansf128(x) ((_Float128) __builtin_nans (x))
+# 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>