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authorWilco Dijkstra <Wilco.Dijkstra@arm.com>2019-07-16 12:17:22 -0300
committerAdhemerval Zanella <adhemerval.zanella@linaro.org>2020-01-03 10:02:04 -0300
commit220622dde5704c95a100c2792a280f18f3deba73 (patch)
treefbf0df37c2671a9bc21a200bd2f587fc5e4cbe2b /sysdeps/alpha/fpu/e_sqrt.c
parentcf4dfd461725b6dbe6f27fbd16913f2c6c5cf7c5 (diff)
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Add libm_alias_finite for _finite symbols
This patch adds a new macro, libm_alias_finite, to define all _finite
symbol.  It sets all _finite symbol as compat symbol based on its first
version (obtained from the definition at built generated first-versions.h).

The <fn>f128_finite symbols were introduced in GLIBC 2.26 and so need
special treatment in code that is shared between long double and float128.
It is done by adding a list, similar to internal symbol redifinition,
on sysdeps/ieee754/float128/float128_private.h.

Alpha also needs some tricky changes to ensure we still emit 2 compat
symbols for sqrt(f).

Passes buildmanyglibc.

Co-authored-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
Diffstat (limited to 'sysdeps/alpha/fpu/e_sqrt.c')
-rw-r--r--sysdeps/alpha/fpu/e_sqrt.c23
1 files changed, 11 insertions, 12 deletions
diff --git a/sysdeps/alpha/fpu/e_sqrt.c b/sysdeps/alpha/fpu/e_sqrt.c
index 645330852a..4cf2ad693a 100644
--- a/sysdeps/alpha/fpu/e_sqrt.c
+++ b/sysdeps/alpha/fpu/e_sqrt.c
@@ -158,30 +158,29 @@ $fixup:									\n\
 									\n\
 	.end	__ieee754_sqrt");
 
-/* Avoid the __sqrt_finite alias that dbl-64/e_sqrt.c would give...  */
-#undef strong_alias
-#define strong_alias(a,b)
-
-/* ... defining our own.  */
 #if SHLIB_COMPAT (libm, GLIBC_2_15, GLIBC_2_18)
-asm (".global	__sqrt_finite1; __sqrt_finite1 = __ieee754_sqrt");
+asm (".global  __sqrt_dummy; __sqrt_dummy = __ieee754_sqrt");
 #else
-asm (".global	__sqrt_finite; __sqrt_finite = __ieee754_sqrt");
+asm (".global  __sqrt_finite; __sqrt_finite = __ieee754_sqrt");
 #endif
 
 static double __full_ieee754_sqrt(double) __attribute_used__;
 #define __ieee754_sqrt __full_ieee754_sqrt
 
 #elif SHLIB_COMPAT (libm, GLIBC_2_15, GLIBC_2_18)
-# define __sqrt_finite __sqrt_finite1
+
+strong_alias (__ieee754_sqrt, __sqrt_dummy)
+#define __ieee754_sqrt __ieee754_sqrt
+
 #endif /* _IEEE_FP_INEXACT */
 
 #include <sysdeps/ieee754/dbl-64/e_sqrt.c>
+#undef __ieee754_sqrt
 
 /* Work around forgotten symbol in alphaev6 build.  */
 #if SHLIB_COMPAT (libm, GLIBC_2_15, GLIBC_2_18)
-# undef __sqrt_finite
-# undef __ieee754_sqrt
-compat_symbol (libm, __sqrt_finite1, __sqrt_finite, GLIBC_2_15);
-versioned_symbol (libm, __ieee754_sqrt, __sqrt_finite, GLIBC_2_18);
+compat_symbol (libm, __sqrt_dummy, __sqrt_finite, GLIBC_2_15);
+#endif
+#if SHLIB_COMPAT (libm, GLIBC_2_18, GLIBC_2_31)
+compat_symbol (libm, __ieee754_sqrt, __sqrt_finite, GLIBC_2_18);
 #endif