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Education Sampler 1992 [NeXTSTEP]
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cc-61.0.1
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cc
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machmode.h
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1991-06-03
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/* Machine mode definitions for GNU C-Compiler; included by rtl.h and tree.h.
Copyright (C) 1990 Free Software Foundation, Inc.
This file is part of GNU CC.
GNU CC 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 version.
GNU CC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNU CC; see the file COPYING. If not, write to
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
#ifndef HAVE_MACHINE_MODES
#define DEF_MACHMODE(SYM, NAME, TYPE, SIZE, UNIT, WIDER) SYM,
enum machine_mode {
#include "machmode.def"
#ifdef EXTRA_CC_MODES
EXTRA_CC_MODES,
#endif
MAX_MACHINE_MODE };
#undef DEF_MACHMODE
#define HAVE_MACHINE_MODES
#ifndef NUM_MACHINE_MODES
#define NUM_MACHINE_MODES (int) MAX_MACHINE_MODE
#endif
/* Get the name of mode MODE as a string. */
extern char *mode_name[];
#define GET_MODE_NAME(MODE) (mode_name[(int)(MODE)])
enum mode_class { MODE_RANDOM, MODE_INT, MODE_FLOAT, MODE_PARTIAL_INT, MODE_CC,
MODE_COMPLEX_INT, MODE_COMPLEX_FLOAT };
/* Get the general kind of object that mode MODE represents
(integer, floating, complex, etc.) */
extern enum mode_class mode_class[];
#define GET_MODE_CLASS(MODE) (mode_class[(int)(MODE)])
/* Get the size in bytes of an object of mode MODE. */
extern int mode_size[];
#define GET_MODE_SIZE(MODE) (mode_size[(int)(MODE)])
/* Get the size in bytes of the basic parts of an object of mode MODE. */
extern int mode_unit_size[];
#define GET_MODE_UNIT_SIZE(MODE) (mode_unit_size[(int)(MODE)])
/* Get the number of units in the object. */
#define GET_MODE_NUNITS(MODE) \
(GET_MODE_SIZE ((MODE)) / GET_MODE_UNIT_SIZE ((MODE)))
/* Get the size in bits of an object of mode MODE. */
#define GET_MODE_BITSIZE(MODE) (BITS_PER_UNIT * mode_size[(int)(MODE)])
/* Get a bitmask containing 1 for all bits in a word
that fit within mode MODE. */
#define GET_MODE_MASK(MODE) \
((GET_MODE_BITSIZE (MODE) >= HOST_BITS_PER_INT) \
? -1 : ((1 << GET_MODE_BITSIZE (MODE)) - 1))
/* Get the next wider natural mode (eg, QI -> HI -> SI -> DI -> TI). */
extern enum machine_mode mode_wider_mode[];
#define GET_MODE_WIDER_MODE(MODE) (mode_wider_mode[(int)(MODE)])
/* Find the best mode to use to access a bit field. */
extern enum machine_mode get_best_mode ();
/* Determine alignment, 1<=result<=BIGGEST_ALIGNMENT. */
#define GET_MODE_ALIGNMENT(MODE) \
MIN (BIGGEST_ALIGNMENT, \
MAX (1, (GET_MODE_UNIT_SIZE (MODE) * BITS_PER_UNIT)))
#endif /* not HAVE_MACHINE_MODES */