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Index: head/lib/msun/ld128/k_expl.h
===================================================================
--- head/lib/msun/ld128/k_expl.h
+++ head/lib/msun/ld128/k_expl.h
@@ -265,7 +265,8 @@
/*
* XXX: the rest of the functions are identical for ld80 and ld128.
* However, we should use scalbnl() for ld128, since long double
- * multiplication is very slow on the only supported ld128 arch (sparc64).
+ * multiplication was very slow on sparc64 and no new evaluation has
+ * been made for aarch64 and/or riscv.
*/
static inline void
Index: head/lib/msun/ld128/s_expl.c
===================================================================
--- head/lib/msun/ld128/s_expl.c
+++ head/lib/msun/ld128/s_expl.c
@@ -92,7 +92,10 @@
t = SUM2P(hi, lo);
/* Scale by 2**k. */
- /* XXX sparc64 multiplication is so slow that scalbnl() is faster. */
+ /*
+ * XXX sparc64 multiplication was so slow that scalbnl() is faster,
+ * but performance on aarch64 and riscv hasn't yet been quantified.
+ */
if (k >= LDBL_MIN_EXP) {
if (k == LDBL_MAX_EXP)
RETURNI(t * 2 * 0x1p16383L);
Index: head/lib/msun/ld128/s_logl.c
===================================================================
--- head/lib/msun/ld128/s_logl.c
+++ head/lib/msun/ld128/s_logl.c
@@ -535,16 +535,17 @@
* efficiency than is gained.
*/
/*
- * Use double precision operations wherever possible, since long
- * double operations are emulated and are very slow on the only
- * known machines that support ld128 (sparc64). Also, don't try
- * to improve parallelism by increasing the number of operations,
- * since any parallelism on such machines is needed for the
- * emulation. Horner's method is good for this, and is also good
- * for accuracy. Horner's method doesn't handle the `lo' term
- * well, either for efficiency or accuracy. However, for accuracy
- * we evaluate d * d * P2 separately to take advantage of
- * by P2 being exact, and this gives a good place to sum the 'lo'
+ * Use double precision operations wherever possible, since
+ * long double operations are emulated and were very slow on
+ * the old sparc64 and unknown on the newer aarch64 and riscv
+ * machines. Also, don't try to improve parallelism by
+ * increasing the number of operations, since any parallelism
+ * on such machines is needed for the emulation. Horner's
+ * method is good for this, and is also good for accuracy.
+ * Horner's method doesn't handle the `lo' term well, either
+ * for efficiency or accuracy. However, for accuracy we
+ * evaluate d * d * P2 separately to take advantage of by P2
+ * being exact, and this gives a good place to sum the 'lo'
* term too.
*/
dd = (double)d;
Index: head/lib/msun/sparc64/Makefile.inc
===================================================================
--- head/lib/msun/sparc64/Makefile.inc
+++ head/lib/msun/sparc64/Makefile.inc
@@ -1,5 +0,0 @@
-# $FreeBSD$
-
-ARCH_SRCS= e_sqrt.S e_sqrtf.S
-LDBL_PREC= 113
-SYM_MAPS+= ${.CURDIR}/sparc64/Symbol.map
Index: head/lib/msun/sparc64/Symbol.map
===================================================================
--- head/lib/msun/sparc64/Symbol.map
+++ head/lib/msun/sparc64/Symbol.map
@@ -1,13 +0,0 @@
-/*
- * $FreeBSD$
- */
-FBSD_1.0 {
-};
-
-FBSD_1.3 {
- fesetexceptflag;
- feraiseexcept;
- fegetenv;
- feholdexcept;
- feupdateenv;
-};
Index: head/lib/msun/sparc64/e_sqrt.S
===================================================================
--- head/lib/msun/sparc64/e_sqrt.S
+++ head/lib/msun/sparc64/e_sqrt.S
@@ -1,33 +0,0 @@
-/*-
- * Copyright (c) 2005 David Schultz <das@FreeBSD.ORG>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <machine/asm.h>
-__FBSDID("$FreeBSD$")
-
-ENTRY(sqrt)
- retl
- fsqrtd %f0, %f0
-END(sqrt)
Index: head/lib/msun/sparc64/e_sqrtf.S
===================================================================
--- head/lib/msun/sparc64/e_sqrtf.S
+++ head/lib/msun/sparc64/e_sqrtf.S
@@ -1,33 +0,0 @@
-/*-
- * Copyright (c) 2005 David Schultz <das@FreeBSD.ORG>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <machine/asm.h>
-__FBSDID("$FreeBSD$")
-
-ENTRY(sqrtf)
- retl
- fsqrts %f1, %f0
-END(sqrtf)
Index: head/lib/msun/sparc64/fenv.h
===================================================================
--- head/lib/msun/sparc64/fenv.h
+++ head/lib/msun/sparc64/fenv.h
@@ -1,262 +0,0 @@
-/*-
- * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
- *
- * Copyright (c) 2004-2005 David Schultz <das@FreeBSD.ORG>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * $FreeBSD$
- */
-
-#ifndef _FENV_H_
-#define _FENV_H_
-
-#include <sys/_types.h>
-
-#ifndef __fenv_static
-#define __fenv_static static
-#endif
-
-typedef __uint64_t fenv_t;
-typedef __uint64_t fexcept_t;
-
-/* Exception flags */
-#define FE_INVALID 0x00000200
-#define FE_DIVBYZERO 0x00000040
-#define FE_OVERFLOW 0x00000100
-#define FE_UNDERFLOW 0x00000080
-#define FE_INEXACT 0x00000020
-#define FE_ALL_EXCEPT (FE_DIVBYZERO | FE_INEXACT | \
- FE_INVALID | FE_OVERFLOW | FE_UNDERFLOW)
-
-/*
- * Rounding modes
- *
- * We can't just use the hardware bit values here, because that would
- * make FE_UPWARD and FE_DOWNWARD negative, which is not allowed.
- */
-#define FE_TONEAREST 0x0
-#define FE_TOWARDZERO 0x1
-#define FE_UPWARD 0x2
-#define FE_DOWNWARD 0x3
-#define _ROUND_MASK (FE_TONEAREST | FE_DOWNWARD | \
- FE_UPWARD | FE_TOWARDZERO)
-#define _ROUND_SHIFT 30
-
-__BEGIN_DECLS
-
-/* Default floating-point environment */
-extern const fenv_t __fe_dfl_env;
-#define FE_DFL_ENV (&__fe_dfl_env)
-
-/* We need to be able to map status flag positions to mask flag positions */
-#define _FPUSW_SHIFT 18
-#define _ENABLE_MASK (FE_ALL_EXCEPT << _FPUSW_SHIFT)
-
-#define __ldxfsr(__r) __asm __volatile("ldx %0, %%fsr" : : "m" (__r))
-#define __stxfsr(__r) __asm __volatile("stx %%fsr, %0" : "=m" (*(__r)))
-
-__fenv_static __inline int
-feclearexcept(int __excepts)
-{
- fexcept_t __r;
-
- __stxfsr(&__r);
- __r &= ~__excepts;
- __ldxfsr(__r);
- return (0);
-}
-
-__fenv_static inline int
-fegetexceptflag(fexcept_t *__flagp, int __excepts)
-{
- fexcept_t __r;
-
- __stxfsr(&__r);
- *__flagp = __r & __excepts;
- return (0);
-}
-
-__fenv_static inline int
-fesetexceptflag(const fexcept_t *__flagp, int __excepts)
-{
- fexcept_t __r;
-
- __stxfsr(&__r);
- __r &= ~__excepts;
- __r |= *__flagp & __excepts;
- __ldxfsr(__r);
- return (0);
-}
-
-/*
- * It seems to be worthwhile to inline this function even when the
- * arguments are not compile-time constants. Perhaps this depends
- * on the register window.
- */
-__fenv_static inline int
-feraiseexcept(int __excepts)
-{
- volatile double d;
-
- /*
- * With a compiler that supports the FENV_ACCESS pragma
- * properly, simple expressions like '0.0 / 0.0' should
- * be sufficient to generate traps. Unfortunately, we
- * need to bring a volatile variable into the equation
- * to prevent incorrect optimizations.
- */
- if (__excepts & FE_INVALID) {
- d = 0.0;
- d = 0.0 / d;
- }
- if (__excepts & FE_DIVBYZERO) {
- d = 0.0;
- d = 1.0 / d;
- }
- if (__excepts & FE_OVERFLOW) {
- d = 0x1.ffp1023;
- d *= 2.0;
- }
- if (__excepts & FE_UNDERFLOW) {
- d = 0x1p-1022;
- d /= 0x1p1023;
- }
- if (__excepts & FE_INEXACT) {
- d = 0x1p-1022;
- d += 1.0;
- }
- return (0);
-}
-
-__fenv_static inline int
-fetestexcept(int __excepts)
-{
- fexcept_t __r;
-
- __stxfsr(&__r);
- return (__r & __excepts);
-}
-
-__fenv_static inline int
-fegetround(void)
-{
- fenv_t __r;
-
- __stxfsr(&__r);
- return ((__r >> _ROUND_SHIFT) & _ROUND_MASK);
-}
-
-__fenv_static inline int
-fesetround(int __round)
-{
- fenv_t __r;
-
- if (__round & ~_ROUND_MASK)
- return (-1);
- __stxfsr(&__r);
- __r &= ~(_ROUND_MASK << _ROUND_SHIFT);
- __r |= __round << _ROUND_SHIFT;
- __ldxfsr(__r);
- return (0);
-}
-
-__fenv_static inline int
-fegetenv(fenv_t *__envp)
-{
-
- __stxfsr(__envp);
- return (0);
-}
-
-__fenv_static inline int
-feholdexcept(fenv_t *__envp)
-{
- fenv_t __r;
-
- __stxfsr(&__r);
- *__envp = __r;
- __r &= ~(FE_ALL_EXCEPT | _ENABLE_MASK);
- __ldxfsr(__r);
- return (0);
-}
-
-__fenv_static inline int
-fesetenv(const fenv_t *__envp)
-{
-
- __ldxfsr(*__envp);
- return (0);
-}
-
-__fenv_static inline int
-feupdateenv(const fenv_t *__envp)
-{
- fexcept_t __r;
-
- __stxfsr(&__r);
- __ldxfsr(*__envp);
- feraiseexcept(__r & FE_ALL_EXCEPT);
- return (0);
-}
-
-#if __BSD_VISIBLE
-
-/* We currently provide no external definitions of the functions below. */
-
-static inline int
-feenableexcept(int __mask)
-{
- fenv_t __old_r, __new_r;
-
- __stxfsr(&__old_r);
- __new_r = __old_r | ((__mask & FE_ALL_EXCEPT) << _FPUSW_SHIFT);
- __ldxfsr(__new_r);
- return ((__old_r >> _FPUSW_SHIFT) & FE_ALL_EXCEPT);
-}
-
-static inline int
-fedisableexcept(int __mask)
-{
- fenv_t __old_r, __new_r;
-
- __stxfsr(&__old_r);
- __new_r = __old_r & ~((__mask & FE_ALL_EXCEPT) << _FPUSW_SHIFT);
- __ldxfsr(__new_r);
- return ((__old_r >> _FPUSW_SHIFT) & FE_ALL_EXCEPT);
-}
-
-static inline int
-fegetexcept(void)
-{
- fenv_t __r;
-
- __stxfsr(&__r);
- return ((__r & _ENABLE_MASK) >> _FPUSW_SHIFT);
-}
-
-#endif /* __BSD_VISIBLE */
-
-__END_DECLS
-
-#endif /* !_FENV_H_ */
Index: head/lib/msun/sparc64/fenv.c
===================================================================
--- head/lib/msun/sparc64/fenv.c
+++ head/lib/msun/sparc64/fenv.c
@@ -1,55 +0,0 @@
-/*-
- * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
- *
- * Copyright (c) 2004 David Schultz <das@FreeBSD.ORG>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * $FreeBSD$
- */
-
-#define __fenv_static
-#include "fenv.h"
-
-#ifdef __GNUC_GNU_INLINE__
-#error "This file must be compiled with C99 'inline' semantics"
-#endif
-
-/*
- * The FSR_version field may be different on different
- * implementations, but it is immutable and opaque to the
- * application. Thus, 0 is valid as the default environment.
- */
-const fenv_t __fe_dfl_env = 0;
-
-extern inline int feclearexcept(int __excepts);
-extern inline int fegetexceptflag(fexcept_t *__flagp, int __excepts);
-extern inline int fesetexceptflag(const fexcept_t *__flagp, int __excepts);
-extern inline int feraiseexcept(int __excepts);
-extern inline int fetestexcept(int __excepts);
-extern inline int fegetround(void);
-extern inline int fesetround(int __round);
-extern inline int fegetenv(fenv_t *__envp);
-extern inline int feholdexcept(fenv_t *__envp);
-extern inline int fesetenv(const fenv_t *__envp);
-extern inline int feupdateenv(const fenv_t *__envp);

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