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Update.
1998-05-30 Philip Blundell <Philip.Blundell@pobox.com> * stdlib/gmp-impl.h: Support strange mixed-endian double format used by ARM systems. * sysdeps/arm/fpu/bits/fenv.h (FE_EXCEPTION_SHIFT): Rename to FE_EXCEPT_SHIFT. * sysdeps/arm/bits/fenv.h: Deleted. * sysdeps/arm/fpu/ieee754.h: New file. * sysdeps/arm/gmp-mparam.h: New file. * stdlib/longlong.h (umul_ppmm): Temporarily disable broken ARM implementation.
This commit is contained in:
Ulrich Drepper
parent
112f5896cc
commit
0061df4ed9
12
ChangeLog
12
ChangeLog
@ -1,3 +1,15 @@
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1998-05-30 Philip Blundell <Philip.Blundell@pobox.com>
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* stdlib/gmp-impl.h: Support strange mixed-endian double format
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used by ARM systems.
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* sysdeps/arm/fpu/bits/fenv.h (FE_EXCEPTION_SHIFT): Rename to
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FE_EXCEPT_SHIFT.
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* sysdeps/arm/bits/fenv.h: Deleted.
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* sysdeps/arm/fpu/ieee754.h: New file.
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* sysdeps/arm/gmp-mparam.h: New file.
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* stdlib/longlong.h (umul_ppmm): Temporarily disable broken ARM
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implementation.
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1998-06-01 Ulrich Drepper <drepper@cygnus.com>
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* sunrpc/rpc/xdr.h (struct XDR): Don't mark xdr_ops element as const.
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@ -327,6 +327,23 @@ extern void impn_sqr_n _PROTO ((mp_ptr prodp, mp_srcptr up, mp_size_t size,
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#define IEEE_DOUBLE_BIG_ENDIAN 1
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#endif
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#ifndef IEEE_DOUBLE_MIXED_ENDIAN
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#define IEEE_DOUBLE_MIXED_ENDIAN 0
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#endif
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#if IEEE_DOUBLE_MIXED_ENDIAN
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union ieee_double_extract
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{
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struct
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{
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unsigned int manh:20;
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unsigned int exp:11;
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unsigned int sig:1;
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unsigned int manl:32;
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} s;
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double d;
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};
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#else
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#if IEEE_DOUBLE_BIG_ENDIAN
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union ieee_double_extract
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{
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@ -352,3 +369,4 @@ union ieee_double_extract
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double d;
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};
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#endif
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#endif
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@ -190,6 +190,7 @@ extern UDItype __udiv_qrnnd __P ((UDItype *, UDItype, UDItype, UDItype));
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"rI" ((USItype)(bh)), \
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"r" ((USItype)(al)), \
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"rI" ((USItype)(bl)))
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#if 0
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#define umul_ppmm(xh, xl, a, b) \
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__asm__ ("%@ Inlined umul_ppmm
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mov %|r0, %2, lsr #16
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@ -211,6 +212,7 @@ extern UDItype __udiv_qrnnd __P ((UDItype *, UDItype, UDItype, UDItype));
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: "r0", "r1", "r2")
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#define UMUL_TIME 20
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#define UDIV_TIME 100
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#endif
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#endif /* __arm__ */
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#if defined (__clipper__) && W_TYPE_SIZE == 32
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@ -1,90 +0,0 @@
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/* Copyright (C) 1997, 1998 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#ifndef _FENV_H
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# error "Never use <bits/fenv.h> directly; include <fenv.h> instead."
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#endif
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/* Define bits representing the exception. We use the bit positions
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of the appropriate bits in the FPU control word. */
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enum
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{
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FE_INVALID = 0x01,
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#define FE_INVALID FE_INVALID
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__FE_DENORM = 0x02,
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FE_DIVBYZERO = 0x04,
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#define FE_DIVBYZERO FE_DIVBYZERO
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FE_OVERFLOW = 0x08,
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#define FE_OVERFLOW FE_OVERFLOW
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FE_UNDERFLOW = 0x10,
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#define FE_UNDERFLOW FE_UNDERFLOW
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FE_INEXACT = 0x20
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#define FE_INEXACT FE_INEXACT
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};
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#define FE_ALL_EXCEPT \
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(FE_INEXACT | FE_DIVBYZERO | FE_UNDERFLOW | FE_OVERFLOW | FE_INVALID)
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/* The ARM FPU supports all of the four defined rounding modes. We
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use again the bit positions in the FPU control word as the values
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for the appropriate macros. */
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enum
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{
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FE_TONEAREST = 0,
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#define FE_TONEAREST FE_TONEAREST
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FE_DOWNWARD = 0x400,
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#define FE_DOWNWARD FE_DOWNWARD
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FE_UPWARD = 0x800,
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#define FE_UPWARD FE_UPWARD
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FE_TOWARDSZERO = 0xc00
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#define FE_TOWARDSZERO FE_TOWARDSZERO
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};
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/* Type representing exception flags. */
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typedef unsigned short int fexcept_t;
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/* Type representing floating-point environment. This function corresponds
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to the layout of the block written by the `fstenv'. */
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typedef struct
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{
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unsigned short int control_word;
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unsigned short int __unused1;
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unsigned short int status_word;
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unsigned short int __unused2;
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unsigned short int tags;
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unsigned short int __unused3;
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unsigned int eip;
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unsigned short int cs_selector;
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unsigned int opcode:11;
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unsigned int __unused4:5;
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unsigned int data_offset;
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unsigned short int data_selector;
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unsigned short int __unused5;
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}
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fenv_t;
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/* If the default argument is used we use this value. */
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#define FE_DFL_ENV ((fenv_t *) -1)
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#ifdef __USE_GNU
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/* Floating-point environment where none of the exception is masked. */
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# define FE_NOMASK_ENV ((fenv_t *) -2)
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#endif
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@ -34,7 +34,7 @@ enum
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};
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/* Amount to shift by to convert an exception to a mask bit. */
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#define FE_EXCEPTION_SHIFT 16
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#define FE_EXCEPT_SHIFT 16
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/* All supported exceptions. */
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#define FE_ALL_EXCEPT \
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115
sysdeps/arm/fpu/ieee754.h
Normal file
115
sysdeps/arm/fpu/ieee754.h
Normal file
@ -0,0 +1,115 @@
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/* Copyright (C) 1992, 1995, 1996, 1998 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#ifndef _IEEE754_H
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#define _IEEE754_H 1
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#include <features.h>
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#include <endian.h>
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__BEGIN_DECLS
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union ieee754_float
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{
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float f;
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/* This is the IEEE 754 single-precision format. */
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struct
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{
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unsigned int mantissa:23;
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unsigned int exponent:8;
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unsigned int negative:1;
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} ieee;
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/* This format makes it easier to see if a NaN is a signalling NaN. */
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struct
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{
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unsigned int mantissa:22;
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unsigned int quiet_nan:1;
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unsigned int exponent:8;
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unsigned int negative:1;
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} ieee_nan;
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};
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#define IEEE754_FLOAT_BIAS 0x7f /* Added to exponent. */
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union ieee754_double
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{
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double d;
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/* This is the IEEE 754 double-precision format. */
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struct
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{
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unsigned int mantissa0:20;
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unsigned int exponent:11;
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unsigned int negative:1;
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unsigned int mantissa1:32;
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} ieee;
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/* This format makes it easier to see if a NaN is a signalling NaN. */
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struct
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{
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unsigned int mantissa0:19;
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unsigned int quiet_nan:1;
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unsigned int exponent:11;
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unsigned int negative:1;
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unsigned int mantissa1:32;
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} ieee_nan;
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};
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#define IEEE754_DOUBLE_BIAS 0x3ff /* Added to exponent. */
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/* The following two structures are correct for `new' floating point systems but
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wrong for the old FPPC. The only solution seems to be to avoid their use on
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old hardware. */
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union ieee854_long_double
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{
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long double d;
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/* This is the IEEE 854 double-extended-precision format. */
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struct
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{
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unsigned int exponent:15;
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unsigned int empty:16;
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unsigned int negative:1;
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unsigned int mantissa1:32;
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unsigned int mantissa0:32;
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} ieee;
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/* This is for NaNs in the IEEE 854 double-extended-precision format. */
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struct
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{
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unsigned int exponent:15;
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unsigned int empty:16;
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unsigned int negative:1;
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unsigned int mantissa1:32;
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unsigned int mantissa0:30;
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unsigned int quiet_nan:1;
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unsigned int one:1;
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} ieee_nan;
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};
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#define IEEE854_LONG_DOUBLE_BIAS 0x3fff
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__END_DECLS
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#endif /* ieee754.h */
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30
sysdeps/arm/gmp-mparam.h
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30
sysdeps/arm/gmp-mparam.h
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@ -0,0 +1,30 @@
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/* gmp-mparam.h -- Compiler/machine parameter header file.
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Copyright (C) 1991, 1993, 1994, 1995 Free Software Foundation, Inc.
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This file is part of the GNU MP Library.
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The GNU MP Library is free software; you can redistribute it and/or modify
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it under the terms of the GNU Library General Public License as published by
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the Free Software Foundation; either version 2 of the License, or (at your
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option) any later version.
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The GNU MP Library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
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License for more details.
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You should have received a copy of the GNU Library General Public License
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along with the GNU MP Library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
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MA 02111-1307, USA. */
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#define BITS_PER_MP_LIMB 32
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#define BYTES_PER_MP_LIMB 4
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#define BITS_PER_LONGINT 32
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#define BITS_PER_INT 32
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#define BITS_PER_SHORTINT 16
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#define BITS_PER_CHAR 8
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#define IEEE_DOUBLE_BIG_ENDIAN 0
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#define IEEE_DOUBLE_MIXED_ENDIAN 1
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