228 lines
6.7 KiB
C
228 lines
6.7 KiB
C
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/* Machine mode definitions for GNU C-Compiler; included by rtl.h and tree.h.
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Copyright (C) 1991, 1993, 1994, 1996 Free Software Foundation, Inc.
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This file is part of GNU CC.
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GNU CC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU CC 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
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU CC; see the file COPYING. If not, write to
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the Free Software Foundation, 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#ifndef HAVE_MACHINE_MODES
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#define HAVE_MACHINE_MODES
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#include "gansidecl.h"
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/* Strictly speaking, this isn't the proper place to include these definitions,
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but this file is included by every GCC file.
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Some systems define these in, e.g., param.h. We undefine these names
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here to avoid the warnings. We prefer to use our definitions since we
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know they are correct. */
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#undef MIN
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#undef MAX
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#define MIN(X,Y) ((X) < (Y) ? (X) : (Y))
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#define MAX(X,Y) ((X) > (Y) ? (X) : (Y))
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/* Find the largest host integer type and set its size and type. */
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#ifndef HOST_BITS_PER_WIDE_INT
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#if HOST_BITS_PER_LONG > HOST_BITS_PER_INT
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#define HOST_BITS_PER_WIDE_INT HOST_BITS_PER_LONG
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#define HOST_WIDE_INT long
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#else
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#define HOST_BITS_PER_WIDE_INT HOST_BITS_PER_INT
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#define HOST_WIDE_INT int
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#endif
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#endif
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/* Provide a default way to print an address in hex via printf. */
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#ifndef HOST_PTR_PRINTF
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#define HOST_PTR_PRINTF \
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(sizeof (int) == sizeof (char *) ? "%x" \
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: sizeof (long) == sizeof (char *) ? "%lx" : "%llx")
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#endif
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/* Provide defaults for the way to print a HOST_WIDE_INT
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in various manners. */
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#ifndef HOST_WIDE_INT_PRINT_DEC
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#if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_INT
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#define HOST_WIDE_INT_PRINT_DEC "%d"
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#else
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#if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONG
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#define HOST_WIDE_INT_PRINT_DEC "%ld"
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#else
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#define HOST_WIDE_INT_PRINT_DEC "%lld"
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#endif
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#endif
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#endif
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#ifndef HOST_WIDE_INT_PRINT_UNSIGNED
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#if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_INT
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#define HOST_WIDE_INT_PRINT_UNSIGNED "%u"
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#else
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#if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONG
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#define HOST_WIDE_INT_PRINT_UNSIGNED "%lu"
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#else
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#define HOST_WIDE_INT_PRINT_UNSIGNED "%llu"
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#endif
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#endif
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#endif
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#ifndef HOST_WIDE_INT_PRINT_HEX
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#if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_INT
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#define HOST_WIDE_INT_PRINT_HEX "0x%x"
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#else
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#if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONG
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#define HOST_WIDE_INT_PRINT_HEX "0x%lx"
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#else
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#define HOST_WIDE_INT_PRINT_HEX "0x%llx"
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#endif
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#endif
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#endif
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#ifndef HOST_WIDE_INT_PRINT_DOUBLE_HEX
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#if HOST_BITS_PER_WIDE_INT == 64
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#if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_INT
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#define HOST_WIDE_INT_PRINT_DOUBLE_HEX "0x%x%016x"
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#else
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#if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONG
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#define HOST_WIDE_INT_PRINT_DOUBLE_HEX "0x%lx%016lx"
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#else
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#define HOST_WIDE_INT_PRINT_DOUBLE_HEX "0x%llx%016llx"
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#endif
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#endif
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#else
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#if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_INT
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#define HOST_WIDE_INT_PRINT_DOUBLE_HEX "0x%x%08x"
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#else
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#if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONG
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#define HOST_WIDE_INT_PRINT_DOUBLE_HEX "0x%lx%08lx"
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#else
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#define HOST_WIDE_INT_PRINT_DOUBLE_HEX "0x%llx%08llx"
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#endif
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#endif
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#endif
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#endif
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/* Make an enum class that gives all the machine modes. */
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#define DEF_MACHMODE(SYM, NAME, TYPE, SIZE, UNIT, WIDER) SYM,
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enum machine_mode {
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#include "machmode.def"
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#ifdef EXTRA_CC_MODES
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EXTRA_CC_MODES,
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#endif
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MAX_MACHINE_MODE };
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#undef DEF_MACHMODE
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#ifndef NUM_MACHINE_MODES
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#define NUM_MACHINE_MODES (int) MAX_MACHINE_MODE
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#endif
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/* Get the name of mode MODE as a string. */
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extern char *mode_name[];
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#define GET_MODE_NAME(MODE) (mode_name[(int) (MODE)])
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enum mode_class { MODE_RANDOM, MODE_INT, MODE_FLOAT, MODE_PARTIAL_INT, MODE_CC,
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MODE_COMPLEX_INT, MODE_COMPLEX_FLOAT, MAX_MODE_CLASS};
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/* Get the general kind of object that mode MODE represents
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(integer, floating, complex, etc.) */
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extern enum mode_class mode_class[];
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#define GET_MODE_CLASS(MODE) (mode_class[(int) (MODE)])
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/* Nonzero if MODE is an integral mode. */
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#define INTEGRAL_MODE_P(MODE) \
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(GET_MODE_CLASS (MODE) == MODE_INT \
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|| GET_MODE_CLASS (MODE) == MODE_PARTIAL_INT \
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|| GET_MODE_CLASS (MODE) == MODE_COMPLEX_INT)
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/* Nonzero if MODE is a floating-point mode. */
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#define FLOAT_MODE_P(MODE) \
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(GET_MODE_CLASS (MODE) == MODE_FLOAT \
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|| GET_MODE_CLASS (MODE) == MODE_COMPLEX_FLOAT)
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/* Get the size in bytes of an object of mode MODE. */
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extern int mode_size[];
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#define GET_MODE_SIZE(MODE) (mode_size[(int) (MODE)])
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/* Get the size in bytes of the basic parts of an object of mode MODE. */
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extern int mode_unit_size[];
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#define GET_MODE_UNIT_SIZE(MODE) (mode_unit_size[(int) (MODE)])
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/* Get the number of units in the object. */
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#define GET_MODE_NUNITS(MODE) \
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((GET_MODE_UNIT_SIZE ((MODE)) == 0) ? 0 \
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: (GET_MODE_SIZE ((MODE)) / GET_MODE_UNIT_SIZE ((MODE))))
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/* Get the size in bits of an object of mode MODE. */
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#define GET_MODE_BITSIZE(MODE) (BITS_PER_UNIT * mode_size[(int) (MODE)])
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/* Get a bitmask containing 1 for all bits in a word
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that fit within mode MODE. */
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#define GET_MODE_MASK(MODE) \
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((GET_MODE_BITSIZE (MODE) >= HOST_BITS_PER_WIDE_INT) \
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?(HOST_WIDE_INT) ~0 : (((HOST_WIDE_INT) 1 << GET_MODE_BITSIZE (MODE)) - 1))
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/* Get the next wider natural mode (eg, QI -> HI -> SI -> DI -> TI). */
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extern enum machine_mode mode_wider_mode[];
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#define GET_MODE_WIDER_MODE(MODE) (mode_wider_mode[(int) (MODE)])
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/* Return the mode for data of a given size SIZE and mode class CLASS.
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If LIMIT is nonzero, then don't use modes bigger than MAX_FIXED_MODE_SIZE.
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The value is BLKmode if no other mode is found. */
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extern enum machine_mode mode_for_size PROTO((unsigned int, enum mode_class, int));
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/* Find the best mode to use to access a bit field. */
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extern enum machine_mode get_best_mode PROTO((int, int, int, enum machine_mode, int));
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/* Determine alignment, 1<=result<=BIGGEST_ALIGNMENT. */
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#define GET_MODE_ALIGNMENT(MODE) \
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MIN (BIGGEST_ALIGNMENT, \
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MAX (1, (GET_MODE_UNIT_SIZE (MODE) * BITS_PER_UNIT)))
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/* For each class, get the narrowest mode in that class. */
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extern enum machine_mode class_narrowest_mode[];
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#define GET_CLASS_NARROWEST_MODE(CLASS) class_narrowest_mode[(int) (CLASS)]
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/* Define the integer modes whose sizes are BITS_PER_UNIT and BITS_PER_WORD
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and the mode whose class is Pmode and whose size is POINTER_SIZE. */
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extern enum machine_mode byte_mode;
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extern enum machine_mode word_mode;
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extern enum machine_mode ptr_mode;
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#endif /* not HAVE_MACHINE_MODES */
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