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m68k.c (override_options): Don't override REAL_MODE_FORMAT. 

* config/m68k/m68k.c (override_options): Don't override
	REAL_MODE_FORMAT.
	* config/m68k/m68k-modes.def (SF, DF): Define to use
	motorola_single_format and motorola_double_format, resp.
	* real.c (motorola_single_format): Renamed from
	coldfire_single_format.
	(motorola_double_format): Renamed from coldfire_double_format.
	(encode_ieee_extended): Generate a proper canonical NaN image
	respecting canonical_nan_lsbs_set.
	(ieee_extended_motorola_format): Set canonical_nan_lsbs_set to
	true.
	* real.h: Adjust declarations.

From-SVN: r125295
This commit is contained in:
Andreas Schwab 2007-06-03 14:32:43 +00:00 committed by Andreas Schwab
parent 4889b20e23
commit b6a9c30c80
5 changed files with 37 additions and 16 deletions
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15
gcc/ChangeLog
View File

@ -1,3 +1,18 @@
2007-06-03 Andreas Schwab <schwab@suse.de>
* config/m68k/m68k.c (override_options): Don't override
REAL_MODE_FORMAT.
* config/m68k/m68k-modes.def (SF, DF): Define to use
motorola_single_format and motorola_double_format, resp.
* real.c (motorola_single_format): Renamed from
coldfire_single_format.
(motorola_double_format): Renamed from coldfire_double_format.
(encode_ieee_extended): Generate a proper canonical NaN image
respecting canonical_nan_lsbs_set.
(ieee_extended_motorola_format): Set canonical_nan_lsbs_set to
true.
* real.h: Adjust declarations.
2007-06-03 Kaz Kojima <kkojima@gcc.gnu.org>
PR target/32163

6
gcc/config/m68k/m68k-modes.def
View File

@ -1,5 +1,5 @@
/* M68k extra machine modes.
Copyright (C) 2003, 2004 Free Software Foundation, Inc.
Copyright (C) 2003, 2004, 2007 Free Software Foundation, Inc.
This file is part of GCC.
@ -18,5 +18,9 @@ along with GCC; see the file COPYING. If not, write to
the Free Software Foundation, 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
/* These differ in the representation of the canonical NaN. */
RESET_FLOAT_FORMAT (SF, motorola_single_format);
RESET_FLOAT_FORMAT (DF, motorola_double_format);
/* 80-bit floating point (IEEE extended, in a 96-bit field) */
FRACTIONAL_FLOAT_MODE (XF, 80, 12, ieee_extended_motorola_format);

8
gcc/config/m68k/m68k.c
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@ -1,6 +1,6 @@
/* Subroutines for insn-output.c for Motorola 68000 family.
Copyright (C) 1987, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
2001, 2003, 2004, 2005, 2006
2001, 2003, 2004, 2005, 2006, 2007
Free Software Foundation, Inc.
This file is part of GCC.
@ -541,12 +541,6 @@ override_options (void)
: (m68k_cpu_flags & FL_COLDFIRE) != 0 ? FPUTYPE_COLDFIRE
: FPUTYPE_68881);
if (TARGET_COLDFIRE_FPU)
{
REAL_MODE_FORMAT (SFmode) = &coldfire_single_format;
REAL_MODE_FORMAT (DFmode) = &coldfire_double_format;
}
/* Sanity check to ensure that msep-data and mid-sahred-library are not
* both specified together. Doing so simply doesn't make sense.
*/

18
gcc/real.c
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@ -1,6 +1,6 @@
/* real.c - software floating point emulation.
Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999,
2000, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
2000, 2002, 2003, 2004, 2005, 2007 Free Software Foundation, Inc.
Contributed by Stephen L. Moshier (moshier@world.std.com).
Re-written by Richard Henderson <rth@redhat.com>
@ -2774,7 +2774,7 @@ const struct real_format mips_single_format =
true
};
const struct real_format coldfire_single_format =
const struct real_format motorola_single_format =
{
encode_ieee_single,
decode_ieee_single,
@ -3019,7 +3019,7 @@ const struct real_format mips_double_format =
true
};
const struct real_format coldfire_double_format =
const struct real_format motorola_double_format =
{
encode_ieee_double,
decode_ieee_double,
@ -3082,7 +3082,15 @@ encode_ieee_extended (const struct real_format *fmt, long *buf,
if (fmt->has_nans)
{
image_hi |= 32767;
if (HOST_BITS_PER_LONG == 32)
if (r->canonical)
{
if (fmt->canonical_nan_lsbs_set)
{
sig_hi = (1 << 30) - 1;
sig_lo = 0xffffffff;
}
}
else if (HOST_BITS_PER_LONG == 32)
{
sig_hi = r->sig[SIGSZ-1];
sig_lo = r->sig[SIGSZ-2];
@ -3364,7 +3372,7 @@ const struct real_format ieee_extended_motorola_format =
true,
true,
true,
false
true
};
const struct real_format ieee_extended_intel_96_format =

6
gcc/real.h
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@ -1,6 +1,6 @@
/* Definitions of floating-point access for GNU compiler.
Copyright (C) 1989, 1991, 1994, 1996, 1997, 1998, 1999,
2000, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
2000, 2002, 2003, 2004, 2005, 2007 Free Software Foundation, Inc.
This file is part of GCC.
@ -254,10 +254,10 @@ extern unsigned int real_hash (const REAL_VALUE_TYPE *);
/* Target formats defined in real.c. */
extern const struct real_format ieee_single_format;
extern const struct real_format mips_single_format;
extern const struct real_format coldfire_single_format;
extern const struct real_format motorola_single_format;
extern const struct real_format ieee_double_format;
extern const struct real_format mips_double_format;
extern const struct real_format coldfire_double_format;
extern const struct real_format motorola_double_format;
extern const struct real_format ieee_extended_motorola_format;
extern const struct real_format ieee_extended_intel_96_format;
extern const struct real_format ieee_extended_intel_96_round_53_format;