112 lines
3.3 KiB
C
112 lines
3.3 KiB
C
/* Machine mode definitions for GNU C-Compiler; included by rtl.h and tree.h.
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Copyright (C) 1990-1991 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, 675 Mass Ave, Cambridge, MA 02139, USA. */
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#ifndef HAVE_MACHINE_MODES
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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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/* 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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#define HAVE_MACHINE_MODES
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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 };
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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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/* 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_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_INT) \
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? -1 : ((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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/* Find the best mode to use to access a bit field. */
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extern enum machine_mode get_best_mode ();
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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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#endif /* not HAVE_MACHINE_MODES */
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