riscv64 libc floating point, a portion of the files are ready.

ok kettenis.

diff --git a/lib/libc/arch/riscv64/gen/fpclassifyl.c b/lib/libc/arch/riscv64/gen/fpclassifyl.c
new file mode 100644 (file)
index 0000000..9e74a6d
--- /dev/null
+++ b/lib/libc/arch/riscv64/gen/fpclassifyl.c
@@ -0,0 +1,45 @@
+/*     $OpenBSD: fpclassifyl.c,v 1.1 2021/04/27 04:36:00 drahn Exp $   */
+/*
+ * Copyright (c) 2008 Martynas Venckus <martynas@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/types.h>
+#include <machine/ieee.h>
+#include <math.h>
+
+int
+__fpclassifyl(long double e)
+{
+       struct ieee_ext *p = (struct ieee_ext *)&e;
+
+       if (p->ext_exp == 0) {
+               if (p->ext_frach == 0 && p->ext_frachm == 0 &&
+                   p->ext_fraclm == 0 && p->ext_fracl == 0)
+                       return FP_ZERO;
+               else
+                       return FP_SUBNORMAL;
+       }
+
+       if (p->ext_exp == EXT_EXP_INFNAN) {
+               if (p->ext_frach == 0 && p->ext_frachm == 0 &&
+                   p->ext_fraclm == 0 && p->ext_fracl == 0)
+                       return FP_INFINITE;
+               else
+                       return FP_NAN;
+       }
+
+       return FP_NORMAL;
+}
+DEF_STRONG(__fpclassifyl);

diff --git a/lib/libc/arch/riscv64/gen/infinity.c b/lib/libc/arch/riscv64/gen/infinity.c
new file mode 100644 (file)
index 0000000..96fd512
--- /dev/null
+++ b/lib/libc/arch/riscv64/gen/infinity.c
@@ -0,0 +1,14 @@
+/*     $OpenBSD: infinity.c,v 1.1 2021/04/27 04:36:00 drahn Exp $      */
+/*
+ * IEEE-compatible infinity.c -- public domain.
+ */
+
+#include <endian.h>
+#include <math.h>
+
+char __infinity[] __attribute__((__aligned__(sizeof(double)))) =
+#if BYTE_ORDER == BIG_ENDIAN
+       { 0x7f, 0xf0,    0,    0, 0, 0,    0,    0};
+#else
+       {    0,    0,    0,    0, 0, 0, 0xf0, 0x7f};
+#endif

diff --git a/lib/libc/arch/riscv64/gen/isfinitel.c b/lib/libc/arch/riscv64/gen/isfinitel.c
new file mode 100644 (file)
index 0000000..e37d2d1
--- /dev/null
+++ b/lib/libc/arch/riscv64/gen/isfinitel.c
@@ -0,0 +1,28 @@
+/*     $OpenBSD: isfinitel.c,v 1.1 2021/04/27 04:36:00 drahn Exp $     */
+/*
+ * Copyright (c) 2008 Martynas Venckus <martynas@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/types.h>
+#include <machine/ieee.h>
+#include <math.h>
+
+int
+__isfinitel(long double e)
+{
+       struct ieee_ext *p = (struct ieee_ext *)&e;
+
+       return (p->ext_exp != EXT_EXP_INFNAN);
+}

diff --git a/lib/libc/arch/riscv64/gen/isinfl.c b/lib/libc/arch/riscv64/gen/isinfl.c
new file mode 100644 (file)
index 0000000..f459fe9
--- /dev/null
+++ b/lib/libc/arch/riscv64/gen/isinfl.c
@@ -0,0 +1,30 @@
+/*     $OpenBSD: isinfl.c,v 1.1 2021/04/27 04:36:00 drahn Exp $        */
+/*
+ * Copyright (c) 2008 Martynas Venckus <martynas@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/types.h>
+#include <machine/ieee.h>
+#include <math.h>
+
+int
+__isinfl(long double e)
+{
+       struct ieee_ext *p = (struct ieee_ext *)&e;
+
+       return (p->ext_exp == EXT_EXP_INFNAN &&
+           p->ext_frach == 0 && p->ext_frachm == 0 &&
+           p->ext_fraclm == 0 && p->ext_fracl == 0);
+}

diff --git a/lib/libc/arch/riscv64/gen/isnanl.c b/lib/libc/arch/riscv64/gen/isnanl.c
new file mode 100644 (file)
index 0000000..8633385
--- /dev/null
+++ b/lib/libc/arch/riscv64/gen/isnanl.c
@@ -0,0 +1,30 @@
+/*     $OpenBSD: isnanl.c,v 1.1 2021/04/27 04:36:00 drahn Exp $        */
+/*
+ * Copyright (c) 2008 Martynas Venckus <martynas@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/types.h>
+#include <machine/ieee.h>
+#include <math.h>
+
+int
+__isnanl(long double e)
+{
+       struct ieee_ext *p = (struct ieee_ext *)&e;
+
+       return (p->ext_exp == EXT_EXP_INFNAN &&
+           (p->ext_frach != 0 || p->ext_frachm != 0 ||
+            p->ext_fraclm != 0 || p->ext_fracl != 0));
+}

diff --git a/lib/libc/arch/riscv64/gen/isnormall.c b/lib/libc/arch/riscv64/gen/isnormall.c
new file mode 100644 (file)
index 0000000..f17e6a2
--- /dev/null
+++ b/lib/libc/arch/riscv64/gen/isnormall.c
@@ -0,0 +1,28 @@
+/*     $OpenBSD: isnormall.c,v 1.1 2021/04/27 04:36:00 drahn Exp $     */
+/*
+ * Copyright (c) 2008 Martynas Venckus <martynas@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/types.h>
+#include <machine/ieee.h>
+#include <math.h>
+
+int
+__isnormall(long double e)
+{
+       struct ieee_ext *p = (struct ieee_ext *)&e;
+
+       return (p->ext_exp != 0 && p->ext_exp != EXT_EXP_INFNAN);
+}

diff --git a/lib/libc/arch/riscv64/gen/nan.c b/lib/libc/arch/riscv64/gen/nan.c
new file mode 100644 (file)
index 0000000..71f5393
--- /dev/null
+++ b/lib/libc/arch/riscv64/gen/nan.c
@@ -0,0 +1,13 @@
+/*     $OpenBSD: nan.c,v 1.1 2021/04/27 04:36:00 drahn Exp $   */
+/* Written by Martynas Venckus.  Public Domain. */
+
+#include <endian.h>
+#include <math.h>
+
+/* bytes for qNaN on an arm (IEEE single format) */
+char __nan[] __attribute__((__aligned__(sizeof(float)))) =
+#if BYTE_ORDER == BIG_ENDIAN
+                                       { 0x7f, 0xc0, 0, 0 };
+#else /* BYTE_ORDER == BIG_ENDIAN */
+                                       { 0, 0, 0xc0, 0x7f };
+#endif /* BYTE_ORDER == BIG_ENDIAN */