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authorYann E. MORIN" <yann.morin.1998@anciens.enib.fr>2007-09-23 17:08:09 (GMT)
committerYann E. MORIN" <yann.morin.1998@anciens.enib.fr>2007-09-23 17:08:09 (GMT)
commitb1e693e40281dc8c451e8892dfcdf55d78a4ade3 (patch)
treec276bc44f23b42895b459efbf2597f4bef378819 /patches/glibc/2.3.6/210-glibc-fp-byteorder.patch
parent3ad6464ffe38eb15591b404e0749aa89f4074fd1 (diff)
Renamed all patches file names so that locales are now irrelevant to sort the files.
Removed the locale check as it is now irrelevant. Removed the experimental binutils 2.17.50.0.xx: 2.18 is here now.
Diffstat (limited to 'patches/glibc/2.3.6/210-glibc-fp-byteorder.patch')
-rw-r--r--patches/glibc/2.3.6/210-glibc-fp-byteorder.patch205
1 files changed, 205 insertions, 0 deletions
diff --git a/patches/glibc/2.3.6/210-glibc-fp-byteorder.patch b/patches/glibc/2.3.6/210-glibc-fp-byteorder.patch
new file mode 100644
index 0000000..d45cdbc
--- /dev/null
+++ b/patches/glibc/2.3.6/210-glibc-fp-byteorder.patch
@@ -0,0 +1,205 @@
+Taken from http://sources.redhat.com/ml/crossgcc/2004-02/msg00104.html
+Author: addsub@eyou.com
+Target: ARM
+
+Fixes http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/gcc.c-torture/execute/920501-8.c
+and makes printf("%f", 1.0) work.
+
+Lennert Buytenhek wrote in http://sources.redhat.com/ml/crossgcc/2004-09/msg00115.html :
+ It ... fixes the 'printf("%f\n", 0.5); prints 0.000000' and general 'floating point
+ is broken' on my big-endian hardfloat FPA ARM platform. ...
+ It's definitely needed for hardfloat. So I'd think it's needed for
+ big-endian systems in any case, and for VFP on little-endian systems
+ too. Someone would have to verify that though.
+
+Lennert Buytenhek wrote in http://sources.redhat.com/ml/crossgcc/2004-09/msg00123.html
+ I just had a look at glibc-20040830, and [this patch] is still needed and useful
+ for this version. glibc-20040830 out-of-the-box still contains the
+ following wrong assumptions:
+ - sysdeps/arm/bits/endian.h: float word order is big endian (which it is
+ not on vfp systems)
+ - sysdeps/arm/gmp-mparam.h: IEEE doubles are mixed endian (which they
+ are not on big endian systems, neither on vfp systems)
+ - sysdeps/arm/ieee754.h: IEEE doubles are in little endian byte order
+ (which they are not on big endian systems)
+ [This patch] seems the right solution for all of these issues.
+
+Dimitry Andric wrote in http://sources.redhat.com/ml/crossgcc/2004-09/msg00132.html :
+ It's even needed for glibc CVS, AFAICS.
+ The patch hunk which modifies glibc.new/sysdeps/arm/bits/endian.h
+ (currently at version 1.4) is only needed for proper VFP operation.
+ But the hunk which modifies sysdeps/arm/gmp-mparam.h, and the hunk
+ that deletes sysdeps/arm/ieee754.h (yes, this IS correct), are needed
+ for proper operation of *any* FP model on big endian ARM.
+
+See also discussion in followups to
+http://sources.redhat.com/ml/crossgcc/2004-05/msg00245.html)
+
+Message-ID: <276985760.37584@eyou.com>
+Received: from unknown (HELO eyou.com) (172.16.2.2)
+ by 0.0.0.0 with SMTP; Tue, 17 Feb 2004 10:42:40 +0800
+Received: (qmail 8238 invoked by uid 65534); 17 Feb 2004 10:42:38 +0800
+Date: 17 Feb 2004 10:42:38 +0800
+Message-ID: <20040217104238.8237.qmail@eyou.com>
+From: "add" <addsub@eyou.com>
+To: dank@kegel.com
+Reply-To: "add" <addsub@eyou.com>
+Subject: Re:&nbsp;&nbsp;&nbsp;problem&nbsp;while&nbsp;building&nbsp;arm&nbsp;vfp&nbsp;softfloat&nbsp;gcc&nbsp;`
+
+Hi, Dan, This is a patch I applied to my glibc-2.3.2, then my softfloat
+toolchain can printf("%f\n",1.0). So you may have a try of this
+
+
+diff -uNrp glibc.old/sysdeps/arm/bits/endian.h glibc.new/sysdeps/arm/bits/endian.h
+--- glibc.old/sysdeps/arm/bits/endian.h 1999-04-12 11:59:13.000000000 -0400
++++ glibc.new/sysdeps/arm/bits/endian.h 2004-02-12 09:15:13.000000000 -0500
+@@ -9,4 +9,9 @@
+ #else
+ #define __BYTE_ORDER __LITTLE_ENDIAN
+ #endif
++
++#ifdef __VFP_FP__
++#define __FLOAT_WORD_ORDER __BYTE_ORDER
++#else
+ #define __FLOAT_WORD_ORDER __BIG_ENDIAN
++#endif
+diff -uNrp glibc.old/sysdeps/arm/gmp-mparam.h glibc.new/sysdeps/arm/gmp-mparam.h
+--- glibc.old/sysdeps/arm/gmp-mparam.h 2001-07-07 15:21:19.000000000 -0400
++++ glibc.new/sysdeps/arm/gmp-mparam.h 2004-02-12 09:15:13.000000000 -0500
+@@ -26,5 +26,13 @@ MA 02111-1307, USA. */
+ #define BITS_PER_SHORTINT 16
+ #define BITS_PER_CHAR 8
+
+-#define IEEE_DOUBLE_BIG_ENDIAN 0
+-#define IEEE_DOUBLE_MIXED_ENDIAN 1
++#if defined(__ARMEB__)
++# define IEEE_DOUBLE_MIXED_ENDIAN 0
++# define IEEE_DOUBLE_BIG_ENDIAN 1
++#elif defined(__VFP_FP__)
++# define IEEE_DOUBLE_MIXED_ENDIAN 0
++# define IEEE_DOUBLE_BIG_ENDIAN 0
++#else
++# define IEEE_DOUBLE_BIG_ENDIAN 0
++# define IEEE_DOUBLE_MIXED_ENDIAN 1
++#endif
+diff -uNrp glibc.old/sysdeps/arm/ieee754.h glibc.new/sysdeps/arm/ieee754.h
+--- glibc.old/sysdeps/arm/ieee754.h 2001-07-07 15:21:19.000000000 -0400
++++ glibc.new/sysdeps/arm/ieee754.h 1969-12-31 19:00:00.000000000 -0500
+@@ -1,115 +0,0 @@
+-/* Copyright (C) 1992, 1995, 1996, 1998 Free Software Foundation, Inc.
+- This file is part of the GNU C Library.
+-
+- The GNU C Library is free software; you can redistribute it and/or
+- modify it under the terms of the GNU Lesser General Public
+- License as published by the Free Software Foundation; either
+- version 2.1 of the License, or (at your option) any later version.
+-
+- The GNU C Library is distributed in the hope that it will be useful,
+- but WITHOUT ANY WARRANTY; without even the implied warranty of
+- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+- Lesser General Public License for more details.
+-
+- You should have received a copy of the GNU Lesser General Public
+- License along with the GNU C Library; if not, write to the Free
+- Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+- 02111-1307 USA. */
+-
+-#ifndef _IEEE754_H
+-
+-#define _IEEE754_H 1
+-#include <features.h>
+-
+-#include <endian.h>
+-
+-__BEGIN_DECLS
+-
+-union ieee754_float
+- {
+- float f;
+-
+- /* This is the IEEE 754 single-precision format. */
+- struct
+- {
+- unsigned int mantissa:23;
+- unsigned int exponent:8;
+- unsigned int negative:1;
+- } ieee;
+-
+- /* This format makes it easier to see if a NaN is a signalling NaN. */
+- struct
+- {
+- unsigned int mantissa:22;
+- unsigned int quiet_nan:1;
+- unsigned int exponent:8;
+- unsigned int negative:1;
+- } ieee_nan;
+- };
+-
+-#define IEEE754_FLOAT_BIAS 0x7f /* Added to exponent. */
+-
+-
+-union ieee754_double
+- {
+- double d;
+-
+- /* This is the IEEE 754 double-precision format. */
+- struct
+- {
+- unsigned int mantissa0:20;
+- unsigned int exponent:11;
+- unsigned int negative:1;
+- unsigned int mantissa1:32;
+- } ieee;
+-
+- /* This format makes it easier to see if a NaN is a signalling NaN. */
+- struct
+- {
+- unsigned int mantissa0:19;
+- unsigned int quiet_nan:1;
+- unsigned int exponent:11;
+- unsigned int negative:1;
+- unsigned int mantissa1:32;
+- } ieee_nan;
+- };
+-
+-#define IEEE754_DOUBLE_BIAS 0x3ff /* Added to exponent. */
+-
+-
+-/* The following two structures are correct for `new' floating point systems but
+- wrong for the old FPPC. The only solution seems to be to avoid their use on
+- old hardware. */
+-
+-union ieee854_long_double
+- {
+- long double d;
+-
+- /* This is the IEEE 854 double-extended-precision format. */
+- struct
+- {
+- unsigned int exponent:15;
+- unsigned int empty:16;
+- unsigned int negative:1;
+- unsigned int mantissa1:32;
+- unsigned int mantissa0:32;
+- } ieee;
+-
+- /* This is for NaNs in the IEEE 854 double-extended-precision format. */
+- struct
+- {
+- unsigned int exponent:15;
+- unsigned int empty:16;
+- unsigned int negative:1;
+- unsigned int mantissa1:32;
+- unsigned int mantissa0:30;
+- unsigned int quiet_nan:1;
+- unsigned int one:1;
+- } ieee_nan;
+- };
+-
+-#define IEEE854_LONG_DOUBLE_BIAS 0x3fff
+-
+-__END_DECLS
+-
+-#endif /* ieee754.h */
+
+Signed-off-by: Robert P. J. Day <rpjday@mindspring.com>