/* This file contains the definitions and documentation for the
machine modes used in the GNU compiler.
- Copyright (C) 1987, 1992, 1994, 1997, 1998, 2000, 2003, 2004
- Free Software Foundation, Inc.
+ Copyright (C) 1987, 1992, 1994, 1997, 1998, 2000, 2003, 2004, 2005,
+ 2007 Free Software Foundation, Inc.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
-Software Foundation; either version 2, or (at your option) any later
+Software Foundation; either version 3, or (at your option) any later
version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
for more details.
You should have received a copy of the GNU General Public License
-along with GCC; see the file COPYING. If not, write to the Free
-Software Foundation, 59 Temple Place - Suite 330, Boston, MA
-02111-1307, USA. */
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
/* This file defines all the MACHINE MODES used by GCC.
using floating point format FORMAT.
All of the bits of its representation are significant.
+ DECIMAL FLOAT_MODE (MODE, BYTESIZE);
+ declares MODE to be of class DECIMAL_FLOAT and BYTESIZE bytes
+ wide. All of the bits of its representation are significant.
+
FRACTIONAL_FLOAT_MODE (MODE, PRECISION, BYTESIZE, FORMAT);
declares MODE to be of class FLOAT, BYTESIZE bytes wide in
storage, but with only PRECISION significant bits, using
floating point format FORMAT.
+ FRACT_MODE (MODE, BYTESIZE, FBIT);
+ declares MODE to be of class FRACT and BYTESIZE bytes wide
+ with FBIT fractional bits. There may be padding bits.
+
+ UFRACT_MODE (MODE, BYTESIZE, FBIT);
+ declares MODE to be of class UFRACT and BYTESIZE bytes wide
+ with FBIT fractional bits. There may be padding bits.
+
+ ACCUM_MODE (MODE, BYTESIZE, IBIT, FBIT);
+ declares MODE to be of class ACCUM and BYTESIZE bytes wide
+ with IBIT integral bits and FBIT fractional bits.
+ There may be padding bits.
+
+ UACCUM_MODE (MODE, BYTESIZE, FBIT);
+ declares MODE to be of class UACCUM and BYTESIZE bytes wide
+ with IBIT integral bits and FBIT fractional bits.
+ There may be padding bits.
+
RESET_FLOAT_FORMAT (MODE, FORMAT);
changes the format of MODE, which must be class FLOAT,
to FORMAT. Use in an ARCH-modes.def to reset the format
ADJUST_BYTESIZE (MODE, EXPR);
ADJUST_ALIGNMENT (MODE, EXPR);
ADJUST_FLOAT_FORMAT (MODE, EXPR);
- Arrange for the byte size, alignment, or floating point format
- of MODE to be adjustable at run time. EXPR will be executed
+ ADJUST_IBIT (MODE, EXPR);
+ ADJUST_FBIT (MODE, EXPR);
+ Arrange for the byte size, alignment, floating point format, ibit,
+ or fbit of MODE to be adjustable at run time. EXPR will be executed
once after processing all command line options, and should
- evaluate to the desired byte size, alignment, or format.
+ evaluate to the desired byte size, alignment, format, ibit or fbit.
Unlike a FORMAT argument, if you are adjusting a float format
you must put an & in front of the name of each format structure.
FIXME define this only for targets that need it. */
CC_MODE (CC);
+/* Fixed-point modes. */
+FRACT_MODE (QQ, 1, 7); /* s.7 */
+FRACT_MODE (HQ, 2, 15); /* s.15 */
+FRACT_MODE (SQ, 4, 31); /* s.31 */
+FRACT_MODE (DQ, 8, 63); /* s.63 */
+FRACT_MODE (TQ, 16, 127); /* s.127 */
+
+UFRACT_MODE (UQQ, 1, 8); /* .8 */
+UFRACT_MODE (UHQ, 2, 16); /* .16 */
+UFRACT_MODE (USQ, 4, 32); /* .32 */
+UFRACT_MODE (UDQ, 8, 64); /* .64 */
+UFRACT_MODE (UTQ, 16, 128); /* .128 */
+
+ACCUM_MODE (HA, 2, 8, 7); /* s8.7 */
+ACCUM_MODE (SA, 4, 16, 15); /* s16.15 */
+ACCUM_MODE (DA, 8, 32, 31); /* s32.31 */
+ACCUM_MODE (TA, 16, 64, 63); /* s64.63 */
+
+UACCUM_MODE (UHA, 2, 8, 8); /* 8.8 */
+UACCUM_MODE (USA, 4, 16, 16); /* 16.16 */
+UACCUM_MODE (UDA, 8, 32, 32); /* 32.32 */
+UACCUM_MODE (UTA, 16, 64, 64); /* 64.64 */
+
/* Allow the target to specify additional modes of various kinds. */
#if HAVE_EXTRA_MODES
# include EXTRA_MODES_FILE
COMPLEX_MODES (INT);
COMPLEX_MODES (FLOAT);
+/* Decimal floating point modes. */
+DECIMAL_FLOAT_MODE (SD, 4, decimal_single_format);
+DECIMAL_FLOAT_MODE (DD, 8, decimal_double_format);
+DECIMAL_FLOAT_MODE (TD, 16, decimal_quad_format);
+
/* The symbol Pmode stands for one of the above machine modes (usually SImode).
The tm.h file specifies which one. It is not a distinct mode. */