s390(x) port

Make.inc

@@ -60,6 +60,9 @@ endif
 ifeq ($(findstring ppc,$(ARCH)),ppc)
 override ARCH := powerpc
 endif
+ifeq ($(findstring s390,$(ARCH)),s390)
+override ARCH := s390
+endif
 ifneq ($(filter $(ARCH),i386 i486 i586 i686 i387 i487 i587 i687),)
 override ARCH := i387
 MARCH ?= i686

Makefile

@@ -72,7 +72,7 @@ test/test-float: libopenlibm.$(OLM_MAJOR_MINOR_SHLIB_EXT)
 	$(MAKE) -C test test-float
 
 clean:
-	rm -f aarch64/*.o amd64/*.o arm/*.o bsdsrc/*.o i387/*.o ld80/*.o ld128/*.o src/*.o powerpc/*.o mips/*.o
+	rm -f aarch64/*.o amd64/*.o arm/*.o bsdsrc/*.o i387/*.o ld80/*.o ld128/*.o src/*.o powerpc/*.o mips/*.o s390/*.o
 	rm -f libopenlibm.a libopenlibm.*$(SHLIB_EXT)*
 	$(MAKE) -C test clean
 

include/openlibm_fenv.h

@@ -12,6 +12,8 @@
 #include <openlibm_fenv_powerpc.h>
 #elif defined(__mips__)
 #include <openlibm_fenv_mips.h>
+#elif defined(__s390__)
+#include <openlibm_fenv_s390.h>
 #else
 #error "Unsupported platform"
 #endif

include/openlibm_fenv_s390.h

@@ -0,0 +1,235 @@
+/*-
+ * Copyright (c) 2016 Dan Horák <dan[at]danny.cz>
+ * 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	__uint32_t	fenv_t;
+typedef	__uint32_t	fexcept_t;
+
+/* Exception flags */
+#define	FE_INEXACT	0x080000
+#define	FE_UNDERFLOW	0x100000
+#define	FE_OVERFLOW	0x200000
+#define	FE_DIVBYZERO	0x400000
+#define	FE_INVALID	0x800000	/* all types of invalid FP ops */
+
+#define	FE_ALL_EXCEPT	(FE_INVALID | FE_DIVBYZERO | FE_INEXACT | FE_OVERFLOW | FE_UNDERFLOW)
+
+/* Rounding modes */
+#define	FE_TONEAREST	0x0000
+#define	FE_TOWARDZERO	0x0001
+#define	FE_UPWARD	0x0002
+#define	FE_DOWNWARD	0x0003
+#define	_ROUND_MASK	(FE_TONEAREST | FE_DOWNWARD | \
+			 FE_UPWARD | FE_TOWARDZERO)
+
+__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	_FPC_EXC_MASK_SHIFT	8
+#define	_ENABLE_MASK	((FE_DIVBYZERO | FE_INEXACT | FE_INVALID | \
+			 FE_OVERFLOW | FE_UNDERFLOW) << _FPC_EXC_MASK_SHIFT)
+
+/* Macros for accessing the hardware control word.  */
+#define _FPU_GETCW(cw)  __asm__ __volatile__ ("efpc %0,0" : "=d" (cw))
+#define _FPU_SETCW(cw)  __asm__ __volatile__ ("sfpc  %0,0" : : "d" (cw))
+
+__fenv_static inline int
+feclearexcept(int __excepts)
+{
+	fexcept_t __r;
+
+	if (__excepts & FE_INVALID)
+		__excepts |= FE_ALL_EXCEPT;
+	_FPU_GETCW(__r);
+	__r &= ~__excepts;
+	_FPU_SETCW(__r);
+	return (0);
+}
+
+__fenv_static inline int
+fegetexceptflag(fexcept_t *__flagp, int __excepts)
+{
+	fexcept_t __r;
+
+	_FPU_GETCW(__r);
+	*__flagp = __r & __excepts;
+	return (0);
+}
+
+__fenv_static inline int
+fesetexceptflag(const fexcept_t *__flagp, int __excepts)
+{
+	fexcept_t __r;
+
+	if (__excepts & FE_INVALID)
+		__excepts |= FE_ALL_EXCEPT;
+	_FPU_GETCW(__r);
+	__r &= ~__excepts;
+	__r |= *__flagp & __excepts;
+	_FPU_SETCW(__r);
+	return (0);
+}
+
+__fenv_static inline int
+feraiseexcept(int __excepts)
+{
+	fexcept_t __r;
+
+	_FPU_GETCW(__r);
+	__r |= __excepts;
+	_FPU_SETCW(__r);
+	return (0);
+}
+
+__fenv_static inline int
+fetestexcept(int __excepts)
+{
+	fexcept_t __r;
+
+	_FPU_GETCW(__r);
+	return (__r & __excepts);
+}
+
+__fenv_static inline int
+fegetround(void)
+{
+	fexcept_t __r;
+
+	_FPU_GETCW(__r);
+	return (__r & _ROUND_MASK);
+}
+
+__fenv_static inline int
+fesetround(int __round)
+{
+	fexcept_t __r;
+
+	if (__round & ~_ROUND_MASK)
+		return (-1);
+
+	_FPU_GETCW(__r);
+	__r &= ~_ROUND_MASK;
+	__r |= __round;
+	_FPU_SETCW(__r);
+	return (0);
+}
+
+__fenv_static inline int
+fegetenv(fenv_t *__envp)
+{
+	_FPU_GETCW(*__envp);
+	return (0);
+}
+
+__fenv_static inline int
+feholdexcept(fenv_t *__envp)
+{
+	fexcept_t __r;
+
+	_FPU_GETCW(__r);
+	*__envp = __r;
+	__r &= ~(FE_ALL_EXCEPT | _ENABLE_MASK);
+	_FPU_SETCW(__r);
+	return (0);
+}
+
+__fenv_static inline int
+fesetenv(const fenv_t *__envp)
+{
+	_FPU_SETCW(*__envp);
+	return (0);
+}
+
+__fenv_static inline int
+feupdateenv(const fenv_t *__envp)
+{
+	fexcept_t __r;
+
+	_FPU_GETCW(__r);
+	__r &= FE_ALL_EXCEPT;
+	__r |= *__envp;
+	_FPU_SETCW(__r);
+	return (0);
+}
+
+#if __BSD_VISIBLE
+
+/* We currently provide no external definitions of the functions below. */
+
+static inline int
+feenableexcept(int __mask)
+{
+	fenv_t __r;
+	fenv_t __oldmask;
+
+	_FPU_GETCW(__r);
+	__oldmask = __r;
+	__r |= (__mask & FE_ALL_EXCEPT) << _FPC_EXC_MASK_SHIFT;
+	_FPU_SETCW(__r);
+	return ((__oldmask & _ENABLE_MASK) >> _FPC_EXC_MASK_SHIFT);
+}
+
+static inline int
+fedisableexcept(int __mask)
+{
+	fenv_t __r;
+	fenv_t __oldmask;
+
+	_FPU_GETCW(__r);
+	__oldmask = __r;
+	__r &= ~((__mask & FE_ALL_EXCEPT) << _FPC_EXC_MASK_SHIFT);
+	_FPU_SETCW(__r);
+	return ((__oldmask & _ENABLE_MASK) >> _FPC_EXC_MASK_SHIFT);
+}
+
+static inline int
+fegetexcept(void)
+{
+	fexcept_t __r;
+
+	_FPU_GETCW(__r);
+	return (__r & (_ENABLE_MASK >> _FPC_EXC_MASK_SHIFT));
+}
+
+#endif /* __BSD_VISIBLE */
+
+__END_DECLS
+
+#endif	/* !_FENV_H_ */

s390/Make.files

@@ -0,0 +1 @@
+$(CUR_SRCS) = fenv.c

s390/fenv.c

@@ -0,0 +1,50 @@
+/*-
+ * Copyright (c) 2016 Dan Horák <dan[at]danny.cz>
+ * 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.
+ *
+ * $FreeBSD$
+ *
+ * cloned from ppc/fenv.c
+ */
+
+#define	__fenv_static
+#include <openlibm_fenv.h>
+
+#ifdef __GNUC_GNU_INLINE__
+#error "This file must be compiled with C99 'inline' semantics"
+#endif
+
+const fenv_t __fe_dfl_env = 0x00000000;
+
+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);

src/fpmath.h

@@ -41,6 +41,8 @@
 #include "powerpc_fpmath.h"
 #elif defined(__mips__)
 #include "mips_fpmath.h"
+#elif defined(__s390__)
+#include "s390_fpmath.h"
 #endif
 
 /* Definitions provided directly by GCC and Clang. */

src/s390_fpmath.h

@@ -0,0 +1,51 @@
+/*-
+ * Copyright (c) 2016 Dan Horák <dan[at]danny.cz>
+ * 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.
+ *
+ * $FreeBSD$
+ *
+ * cloned from powerpc_fpmath.h
+ */
+
+union IEEEl2bits {
+	long double	e;
+	struct {
+		unsigned int		sign	:1;
+		unsigned int		exp	:11;
+		unsigned int		manh	:20;
+		unsigned int		manl	:32;
+	} bits;
+};
+
+#define	mask_nbit_l(u)	((void)0)
+#define	LDBL_IMPLICIT_NBIT
+#define	LDBL_NBIT	0
+
+#define	LDBL_MANH_SIZE	20
+#define	LDBL_MANL_SIZE	32
+
+#define	LDBL_TO_ARRAY32(u, a) do {			\
+	(a)[0] = (uint32_t)(u).bits.manl;		\
+	(a)[1] = (uint32_t)(u).bits.manh;		\
+} while(0)