machine/sh: Clean up SuperH support

Add fenv bits, provide fallback for strncpy on targets without asm
support.

Signed-off-by: Keith Packard <[email protected]>

Author: keith-packard

newlib/libc/machine/sh/meson.build

@@ -41,6 +41,9 @@ srcs_machine = [
   'strcpy.S',
   'strlen.S',
   'strncpy.S',
+  'strncpy.c',
 ]
 
+subdir('sys')
+
 src_machine = files(srcs_machine)

newlib/libc/machine/sh/strncpy.c

@@ -0,0 +1,3 @@
+#if !defined(__SH5__) || !__SHMEDIA__
+#include "../../string/strncpy.c"
+#endif

newlib/libc/machine/sh/sys/fenv.h

@@ -0,0 +1,79 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
+ * Copyright (c) 2004-2005 David Schultz <[email protected]>
+ * 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 _SYS_FENV_H_
+#define _SYS_FENV_H_ 1
+
+#include <sys/_types.h>
+#include <sys/cdefs.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef int fenv_t;
+typedef int fexcept_t;
+
+#ifdef __SH_FPU_ANY__
+
+#ifdef __SH2E__
+#define PICOLIBC_LONG_DOUBLE_NOROUND
+#define PICOLIBC_LONG_DOUBLE_NOEXCEPT
+#if __SIZEOF_DOUBLE__ > 4
+#define PICOLIBC_DOUBLE_NOROUND
+#define PICOLIBC_DOUBLE_NOEXCEPT
+#endif
+#endif
+
+#ifdef __SH4_SINGLE_ONLY__
+#define PICOLIBC_LONG_DOUBLE_NOROUND
+#define PICOLIBC_LONG_DOUBLE_NOEXCEPT
+#endif
+
+/* Exception flags */
+#define	FE_INVALID	0x0040
+#define	FE_DIVBYZERO	0x0020
+#define	FE_OVERFLOW	0x0010
+#define	FE_UNDERFLOW	0x0008
+#define	FE_INEXACT	0x0004
+#define	FE_ALL_EXCEPT	(FE_DIVBYZERO | FE_INEXACT | \
+    FE_INVALID | FE_OVERFLOW | FE_UNDERFLOW)
+
+/* Rounding modes */
+#define	FE_TONEAREST		0x0000
+#define	FE_TOWARDZERO		0x0001
+
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif	/* _SYS_FENV_H_ */ 

newlib/libc/machine/sh/sys/meson.build

@@ -0,0 +1,40 @@
+#
+# SPDX-License-Identifier: BSD-3-Clause
+#
+# Copyright © 2020 Keith Packard, 
+#
+# 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.
+#
+# 3. Neither the name of the copyright holder nor the names of its
+#    contributors may be used to endorse or promote products derived
+#    from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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
+# COPYRIGHT HOLDER 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.
+#
+inc_sys_headers_machine = [
+  'fenv.h'
+]
+
+install_headers(inc_sys_headers_machine,
+		install_dir: include_dir / 'sys')