source: scripts/patches/glibc-vfp.patch@ b5fcb5d

clfs-1.2 clfs-2.1 clfs-3.0.0-systemd clfs-3.0.0-sysvinit systemd sysvinit
Last change on this file since b5fcb5d was 7f65c0e, checked in by Jim Gifford <clfs@…>, 19 years ago

r625@server (orig r623): jim | 2005-10-31 12:43:24 -0800
Final Move

  • Property mode set to 100644
File size: 5.0 KB
RevLine 
[617118d]1# Source: http://sources.redhat.com/ml/crossgcc/2004-02/msg00104.html
2#
3# From: Dan Kegel <dank at kegel dot com>
4# To: Nicolas Pitre <nico at cam dot org>
5# Cc: add <addsub at eyou dot com>, Richard dot Earnshaw at arm dot com,
6# rearnsha at arm dot com, crossgcc at sources dot redhat dot com,
7# linux-arm at lists dot arm dot linux dot org dot uk
8# Date: Mon, 16 Feb 2004 22:49:35 -0800
9# Subject: Re: problem while building arm vfp softfloat gcc
10#
11# Attached is a patch from addsub@eyou.com that he says patches glibc and
12# makes printf("%f", 1.0) work again. I haven't tested it, just wanted
13# to give Nico a chance to have a look at it. Not sure if addsub wrote
14# this himself or whether it's suitable for glibc mainline (I've asked him).
15# - Dan
16
17diff -uNrp glibc.old/sysdeps/arm/bits/endian.h glibc.new/sysdeps/arm/bits/endian.h
18--- glibc.old/sysdeps/arm/bits/endian.h 1999-04-12 11:59:13.000000000 -0400
19+++ glibc.new/sysdeps/arm/bits/endian.h 2004-02-12 09:15:13.000000000 -0500
20@@ -9,4 +9,9 @@
21 #else
22 #define __BYTE_ORDER __LITTLE_ENDIAN
23 #endif
24+
25+#ifdef __VFP_FP__
26+#define __FLOAT_WORD_ORDER __BYTE_ORDER
27+#else
28 #define __FLOAT_WORD_ORDER __BIG_ENDIAN
29+#endif
30diff -uNrp glibc.old/sysdeps/arm/gmp-mparam.h glibc.new/sysdeps/arm/gmp-mparam.h
31--- glibc.old/sysdeps/arm/gmp-mparam.h 2001-07-07 15:21:19.000000000 -0400
32+++ glibc.new/sysdeps/arm/gmp-mparam.h 2004-02-12 09:15:13.000000000 -0500
33@@ -26,5 +26,13 @@ MA 02111-1307, USA. */
34 #define BITS_PER_SHORTINT 16
35 #define BITS_PER_CHAR 8
36
37-#define IEEE_DOUBLE_BIG_ENDIAN 0
38-#define IEEE_DOUBLE_MIXED_ENDIAN 1
39+#if defined(__ARMEB__)
40+# define IEEE_DOUBLE_MIXED_ENDIAN 0
41+# define IEEE_DOUBLE_BIG_ENDIAN 1
42+#elif defined(__VFP_FP__)
43+# define IEEE_DOUBLE_MIXED_ENDIAN 0
44+# define IEEE_DOUBLE_BIG_ENDIAN 0
45+#else
46+# define IEEE_DOUBLE_BIG_ENDIAN 0
47+# define IEEE_DOUBLE_MIXED_ENDIAN 1
48+#endif
49diff -uNrp glibc.old/sysdeps/arm/ieee754.h glibc.new/sysdeps/arm/ieee754.h
50--- glibc.old/sysdeps/arm/ieee754.h 2001-07-07 15:21:19.000000000 -0400
51+++ glibc.new/sysdeps/arm/ieee754.h 1969-12-31 19:00:00.000000000 -0500
52@@ -1,115 +0,0 @@
53-/* Copyright (C) 1992, 1995, 1996, 1998 Free Software Foundation, Inc.
54- This file is part of the GNU C Library.
55-
56- The GNU C Library is free software; you can redistribute it and/or
57- modify it under the terms of the GNU Lesser General Public
58- License as published by the Free Software Foundation; either
59- version 2.1 of the License, or (at your option) any later version.
60-
61- The GNU C Library is distributed in the hope that it will be useful,
62- but WITHOUT ANY WARRANTY; without even the implied warranty of
63- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
64- Lesser General Public License for more details.
65-
66- You should have received a copy of the GNU Lesser General Public
67- License along with the GNU C Library; if not, write to the Free
68- Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
69- 02111-1307 USA. */
70-
71-#ifndef _IEEE754_H
72-
73-#define _IEEE754_H 1
74-#include <features.h>
75-
76-#include <endian.h>
77-
78-__BEGIN_DECLS
79-
80-union ieee754_float
81- {
82- float f;
83-
84- /* This is the IEEE 754 single-precision format. */
85- struct
86- {
87- unsigned int mantissa:23;
88- unsigned int exponent:8;
89- unsigned int negative:1;
90- } ieee;
91-
92- /* This format makes it easier to see if a NaN is a signalling NaN. */
93- struct
94- {
95- unsigned int mantissa:22;
96- unsigned int quiet_nan:1;
97- unsigned int exponent:8;
98- unsigned int negative:1;
99- } ieee_nan;
100- };
101-
102-#define IEEE754_FLOAT_BIAS 0x7f /* Added to exponent. */
103-
104-
105-union ieee754_double
106- {
107- double d;
108-
109- /* This is the IEEE 754 double-precision format. */
110- struct
111- {
112- unsigned int mantissa0:20;
113- unsigned int exponent:11;
114- unsigned int negative:1;
115- unsigned int mantissa1:32;
116- } ieee;
117-
118- /* This format makes it easier to see if a NaN is a signalling NaN. */
119- struct
120- {
121- unsigned int mantissa0:19;
122- unsigned int quiet_nan:1;
123- unsigned int exponent:11;
124- unsigned int negative:1;
125- unsigned int mantissa1:32;
126- } ieee_nan;
127- };
128-
129-#define IEEE754_DOUBLE_BIAS 0x3ff /* Added to exponent. */
130-
131-
132-/* The following two structures are correct for `new' floating point systems but
133- wrong for the old FPPC. The only solution seems to be to avoid their use on
134- old hardware. */
135-
136-union ieee854_long_double
137- {
138- long double d;
139-
140- /* This is the IEEE 854 double-extended-precision format. */
141- struct
142- {
143- unsigned int exponent:15;
144- unsigned int empty:16;
145- unsigned int negative:1;
146- unsigned int mantissa1:32;
147- unsigned int mantissa0:32;
148- } ieee;
149-
150- /* This is for NaNs in the IEEE 854 double-extended-precision format. */
151- struct
152- {
153- unsigned int exponent:15;
154- unsigned int empty:16;
155- unsigned int negative:1;
156- unsigned int mantissa1:32;
157- unsigned int mantissa0:30;
158- unsigned int quiet_nan:1;
159- unsigned int one:1;
160- } ieee_nan;
161- };
162-
163-#define IEEE854_LONG_DOUBLE_BIAS 0x3fff
164-
165-__END_DECLS
166-
167-#endif /* ieee754.h */
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