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[src/trunk]: src/lib/libc/quad Add IEEE 754 versions of
details: https://anonhg.NetBSD.org/src/rev/7b0feb2cc4b9
branches: trunk
changeset: 789591:7b0feb2cc4b9
user: matt <matt%NetBSD.org@localhost>
date: Sat Aug 24 00:51:48 2013 +0000
description:
Add IEEE 754 versions of
fixdfdi.c fixsfdi.c fixunsdfdi.c fixunssfdi.c
floatdidf.c floatdisf.c floatundidf.c floatundisf.c
These don't FP so are well suited to softfloat implementation.
diffstat:
lib/libc/quad/Makefile.inc | 12 +++-
lib/libc/quad/fixdfdi_ieee754.c | 82 +++++++++++++++++++++++++++++++++++
lib/libc/quad/fixsfdi_ieee754.c | 75 ++++++++++++++++++++++++++++++++
lib/libc/quad/fixunsdfdi_ieee754.c | 85 +++++++++++++++++++++++++++++++++++++
lib/libc/quad/fixunssfdi_ieee754.c | 77 +++++++++++++++++++++++++++++++++
lib/libc/quad/floatdidf_ieee754.c | 75 ++++++++++++++++++++++++++++++++
lib/libc/quad/floatdisf_ieee754.c | 11 ++--
lib/libc/quad/floatundidf_ieee754.c | 69 ++++++++++++++++++++++++++++++
lib/libc/quad/floatundisf_ieee754.c | 9 ++-
9 files changed, 483 insertions(+), 12 deletions(-)
diffs (truncated from 593 to 300 lines):
diff -r c679b484d8dd -r 7b0feb2cc4b9 lib/libc/quad/Makefile.inc
--- a/lib/libc/quad/Makefile.inc Fri Aug 23 18:11:47 2013 +0000
+++ b/lib/libc/quad/Makefile.inc Sat Aug 24 00:51:48 2013 +0000
@@ -1,13 +1,15 @@
-# $NetBSD: Makefile.inc,v 1.16 2013/04/30 01:43:01 matt Exp $
+# $NetBSD: Makefile.inc,v 1.17 2013/08/24 00:51:48 matt Exp $
# @(#)Makefile.inc 8.1 (Berkeley) 6/4/93
# Quad support
SRCS.quad= cmpdi2.c ucmpdi2.c
SRCS.quad+= divdi3.c moddi3.c
+.if empty(LIBC_MACHINE_ARCH:Mearm*)
SRCS.quad+= fixdfdi.c fixsfdi.c
SRCS.quad+= fixunsdfdi.c fixunssfdi.c
SRCS.quad+= floatdidf.c floatdisf.c
-SRCS.quad+= floatundisf.c floatundidf.c
+SRCS.quad+= floatundidf.c floatundisf.c
+.endif
SRCS.quad+= muldi3.c
SRCS.quad+= negdi2.c
SRCS.quad+= qdivrem.c
@@ -17,8 +19,12 @@
SRCS.quad+= ashldi3.S ashrdi3.S lshrdi3.S
.elif (${MACHINE_ARCH} == "m68000")
SRCS.quad+= ashldi3.S lshrdi3.S
-.elif (!empty{LIBC_MACHINE_ARCH:Mearm*})
+.elif !empty(LIBC_MACHINE_ARCH:Mearm*)
SRCS.quad+= ashldi3.c ashrdi3.c lshrdi3.c lshldi3.c
+SRCS.quad+= floatdidf_ieee754.c floatdisf_ieee754.c
+SRCS.quad+= floatundidf_ieee754.c floatundisf_ieee754.c
+SRCS.quad+= fixdfdi_ieee754.c fixsfdi_ieee754.c
+SRCS.quad+= fixunsdfdi_ieee754.c fixunssfdi_ieee754.c
.else
SRCS.quad+= ashldi3.c ashrdi3.c lshrdi3.c
.endif
diff -r c679b484d8dd -r 7b0feb2cc4b9 lib/libc/quad/fixdfdi_ieee754.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/lib/libc/quad/fixdfdi_ieee754.c Sat Aug 24 00:51:48 2013 +0000
@@ -0,0 +1,82 @@
+/* $NetBSD: fixdfdi_ieee754.c,v 1.1 2013/08/24 00:51:48 matt Exp $ */
+
+/*-
+ * Copyright (c) 1992, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This software was developed by the Computer Systems Engineering group
+ * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
+ * contributed to Berkeley.
+ *
+ * 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 University 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 REGENTS 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 REGENTS 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 <sys/cdefs.h>
+#if defined(LIBC_SCCS) && !defined(lint)
+__RCSID("$NetBSD: fixdfdi_ieee754.c,v 1.1 2013/08/24 00:51:48 matt Exp $");
+#endif /* LIBC_SCCS and not lint */
+
+#if defined(SOFTFLOAT) || defined(__ARM_EABI__)
+#include "softfloat/softfloat-for-gcc.h"
+#endif
+
+#include "quad.h"
+#include <limits.h>
+#include <stdbool.h>
+#include <machine/ieee.h>
+
+/*
+ * Convert double to signed quad.
+ * Not sure what to do with negative numbers---for now, anything out
+ * of range becomes UQUAD_MAX.
+ */
+quad_t
+__fixdfdi(double x)
+{
+ const union ieee_double_u ux = { .dblu_d = x };
+ signed int exp = ux.dblu_exp - DBL_EXP_BIAS;
+ const bool neg = ux.dblu_sign;
+ quad_t r;
+
+ if (exp >= 62)
+ return neg ? QUAD_MIN : QUAD_MAX;
+
+ r = 1 << DBL_FRACHBITS; /* implicit bit */
+ r |= ux.dblu_frach;
+ exp -= DBL_FRACHBITS;
+ if (exp < 0) {
+ r >>= -exp;
+ } else if (exp > 0) {
+ r <<= DBL_FRACLBITS;
+ r |= ux.dblu_fracl;
+ exp -= DBL_FRACLBITS;
+ if (exp < 0) {
+ r >>= -exp;
+ } else if (exp > 0) {
+ r <<= exp;
+ }
+ }
+ return neg ? -r : r;
+}
diff -r c679b484d8dd -r 7b0feb2cc4b9 lib/libc/quad/fixsfdi_ieee754.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/lib/libc/quad/fixsfdi_ieee754.c Sat Aug 24 00:51:48 2013 +0000
@@ -0,0 +1,75 @@
+/* $NetBSD: fixsfdi_ieee754.c,v 1.1 2013/08/24 00:51:48 matt Exp $ */
+
+/*-
+ * Copyright (c) 1992, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This software was developed by the Computer Systems Engineering group
+ * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
+ * contributed to Berkeley.
+ *
+ * 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 University 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 REGENTS 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 REGENTS 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 <sys/cdefs.h>
+#if defined(LIBC_SCCS) && !defined(lint)
+__RCSID("$NetBSD: fixsfdi_ieee754.c,v 1.1 2013/08/24 00:51:48 matt Exp $");
+#endif /* LIBC_SCCS and not lint */
+
+#if defined(SOFTFLOAT) || defined(__ARM_EABI__)
+#include "softfloat/softfloat-for-gcc.h"
+#endif
+
+#include "quad.h"
+#include <limits.h>
+#include <stdbool.h>
+#include <machine/ieee.h>
+
+/*
+ * Convert float to signed quad.
+ */
+quad_t
+__fixsfdi(float x)
+{
+ const union ieee_single_u ux = { .sngu_f = x };
+ signed int exp = ux.sngu_exp - SNG_EXP_BIAS;
+ const bool neg = ux.sngu_sign;
+ quad_t r;
+
+ if (exp < 0)
+ return 0;
+ if (exp > 62)
+ return neg ? QUAD_MIN : QUAD_MAX;
+
+ r = 1 << SNG_FRACBITS; /* implicit bit */
+ r |= ux.sngu_frac;
+ exp -= SNG_FRACBITS;
+ if (exp < 0) {
+ r >>= -exp;
+ } else if (exp > 0) {
+ r <<= exp;
+ }
+ return neg ? -r : r;
+}
diff -r c679b484d8dd -r 7b0feb2cc4b9 lib/libc/quad/fixunsdfdi_ieee754.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/lib/libc/quad/fixunsdfdi_ieee754.c Sat Aug 24 00:51:48 2013 +0000
@@ -0,0 +1,85 @@
+/* $NetBSD: fixunsdfdi_ieee754.c,v 1.1 2013/08/24 00:51:48 matt Exp $ */
+
+/*-
+ * Copyright (c) 1992, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This software was developed by the Computer Systems Engineering group
+ * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
+ * contributed to Berkeley.
+ *
+ * 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 University 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 REGENTS 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 REGENTS 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 <sys/cdefs.h>
+#if defined(LIBC_SCCS) && !defined(lint)
+__RCSID("$NetBSD: fixunsdfdi_ieee754.c,v 1.1 2013/08/24 00:51:48 matt Exp $");
+#endif /* LIBC_SCCS and not lint */
+
+#if defined(SOFTFLOAT) || defined(__ARM_EABI__)
+#include "softfloat/softfloat-for-gcc.h"
+#endif
+
+#include "quad.h"
+#include <limits.h>
+#include <machine/ieee.h>
+
+/*
+ * Convert double to unsigned quad.
+ * Not sure what to do with negative numbers---for now, anything out
+ * of range becomes UQUAD_MAX.
+ */
+u_quad_t
+__fixunsdfdi(double x)
+{
+ const union ieee_double_u ux = { .dblu_d = x };
+ signed int exp = ux.dblu_exp - DBL_EXP_BIAS;
+ u_quad_t r;
+
+ if (ux.dblu_sign)
+ return UQUAD_MAX;
+ if (exp > 63)
+ return UQUAD_MAX;
+ if (exp < 0)
+ return 0;
+
+ r = 1 << DBL_FRACHBITS; /* implicit bit */
+ r |= ux.dblu_frach;
+ exp -= DBL_FRACHBITS;
+ if (exp == 0)
+ return r;
+ if (exp < 0)
+ return r >> -exp;
+
+ r <<= DBL_FRACLBITS;
+ r |= ux.dblu_fracl;
+ exp -= DBL_FRACLBITS;
+ if (exp == 0)
+ return r;
+ if (exp < 0)
+ return r >> -exp;
+
+ return r << exp;
+}
diff -r c679b484d8dd -r 7b0feb2cc4b9 lib/libc/quad/fixunssfdi_ieee754.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/lib/libc/quad/fixunssfdi_ieee754.c Sat Aug 24 00:51:48 2013 +0000
@@ -0,0 +1,77 @@
+/* $NetBSD: fixunssfdi_ieee754.c,v 1.1 2013/08/24 00:51:48 matt Exp $ */
+
+/*-
+ * Copyright (c) 1992, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This software was developed by the Computer Systems Engineering group
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