Return to machmode.h CVS log

Up to [Apple XNU] / GNUtools / cc

Annotation of GNUtools/cc/machmode.h, revision 1.1

1.1     ! root        1: /* Machine mode definitions for GNU C-Compiler; included by rtl.h and tree.h.
        !             2:    Copyright (C) 1991, 1993  Free Software Foundation, Inc.
        !             3: 
        !             4: This file is part of GNU CC.
        !             5: 
        !             6: GNU CC is free software; you can redistribute it and/or modify
        !             7: it under the terms of the GNU General Public License as published by
        !             8: the Free Software Foundation; either version 2, or (at your option)
        !             9: any later version.
        !            10: 
        !            11: GNU CC is distributed in the hope that it will be useful,
        !            12: but WITHOUT ANY WARRANTY; without even the implied warranty of
        !            13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        !            14: GNU General Public License for more details.
        !            15: 
        !            16: You should have received a copy of the GNU General Public License
        !            17: along with GNU CC; see the file COPYING.  If not, write to
        !            18: the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
        !            19: 
        !            20: 
        !            21: /* Add prototype support.  */
        !            22: #ifndef PROTO
        !            23: #if defined (USE_PROTOTYPES) ? USE_PROTOTYPES : defined (__STDC__)
        !            24: #define PROTO(ARGS) ARGS
        !            25: #else
        !            26: #define PROTO(ARGS) ()
        !            27: #endif
        !            28: #endif
        !            29: 
        !            30: #ifndef HAVE_MACHINE_MODES
        !            31: 
        !            32: /* Strictly speaking, this isn't the proper place to include these definitions,
        !            33:    but this file is included by every GCC file.
        !            34: 
        !            35:    Some systems define these in, e.g., param.h.  We undefine these names
        !            36:    here to avoid the warnings.  We prefer to use our definitions since we
        !            37:    know they are correct.  */
        !            38: 
        !            39: #undef MIN
        !            40: #undef MAX
        !            41: 
        !            42: #define MIN(X,Y) ((X) < (Y) ? (X) : (Y))
        !            43: #define MAX(X,Y) ((X) > (Y) ? (X) : (Y))
        !            44: 
        !            45: /* Find the largest host integer type and set its size and type.  */
        !            46: 
        !            47: #ifndef HOST_BITS_PER_WIDE_INT
        !            48: 
        !            49: #if HOST_BITS_PER_LONG > HOST_BITS_PER_INT
        !            50: #define HOST_BITS_PER_WIDE_INT HOST_BITS_PER_LONG
        !            51: #define HOST_WIDE_INT long
        !            52: #else
        !            53: #define HOST_BITS_PER_WIDE_INT HOST_BITS_PER_INT
        !            54: #define HOST_WIDE_INT int
        !            55: #endif
        !            56: 
        !            57: #endif
        !            58: 
        !            59: /* Define the number of entries in an 8-bit `shorts' array needed to represent
        !            60:    the largest supported constant, which is twice the width of the largest
        !            61:    host integer type.  */
        !            62: 
        !            63: #ifndef MAX_SHORTS
        !            64: #define MAX_SHORTS (HOST_BITS_PER_WIDE_INT * 2 / 8)
        !            65: #endif
        !            66: 
        !            67: /* Provide a default way to print an address in hex via printf.  */
        !            68: 
        !            69: #ifndef HOST_PTR_PRINTF
        !            70: #define HOST_PTR_PRINTF sizeof (int) == sizeof (char *) ? "%x" : "%lx"
        !            71: #endif
        !            72: 
        !            73: /* Make an enum class that gives all the machine modes.  */
        !            74: 
        !            75: #define DEF_MACHMODE(SYM, NAME, TYPE, SIZE, UNIT, WIDER)  SYM,
        !            76: 
        !            77: enum machine_mode {
        !            78: #include "machmode.def"
        !            79: 
        !            80: #ifdef EXTRA_CC_MODES
        !            81:   EXTRA_CC_MODES,
        !            82: #endif
        !            83: MAX_MACHINE_MODE };
        !            84: 
        !            85: #undef DEF_MACHMODE
        !            86: 
        !            87: #define HAVE_MACHINE_MODES
        !            88: 
        !            89: #ifndef NUM_MACHINE_MODES
        !            90: #define NUM_MACHINE_MODES (int) MAX_MACHINE_MODE
        !            91: #endif
        !            92: 
        !            93: /* Get the name of mode MODE as a string.  */
        !            94: 
        !            95: extern char *mode_name[];
        !            96: #define GET_MODE_NAME(MODE)            (mode_name[(int)(MODE)])
        !            97: 
        !            98: enum mode_class { MODE_RANDOM, MODE_INT, MODE_FLOAT, MODE_PARTIAL_INT, MODE_CC,
        !            99:                  MODE_COMPLEX_INT, MODE_COMPLEX_FLOAT, MAX_MODE_CLASS};
        !           100: 
        !           101: /* Get the general kind of object that mode MODE represents
        !           102:    (integer, floating, complex, etc.)  */
        !           103: 
        !           104: extern enum mode_class mode_class[];
        !           105: #define GET_MODE_CLASS(MODE)           (mode_class[(int)(MODE)])
        !           106: 
        !           107: /* Nonzero if MODE is an integral mode.  */
        !           108: #define INTEGRAL_MODE_P(MODE)                  \
        !           109:   (GET_MODE_CLASS (MODE) == MODE_INT           \
        !           110:    || GET_MODE_CLASS (MODE) == MODE_PARTIAL_INT \
        !           111:    || GET_MODE_CLASS (MODE) == MODE_COMPLEX_INT)
        !           112: 
        !           113: /* Nonzero if MODE is a floating-point mode.  */
        !           114: #define FLOAT_MODE_P(MODE)             \
        !           115:   (GET_MODE_CLASS (MODE) == MODE_FLOAT \
        !           116:    || GET_MODE_CLASS (MODE) == MODE_COMPLEX_FLOAT)
        !           117: 
        !           118: /* Get the size in bytes of an object of mode MODE.  */
        !           119: 
        !           120: extern int mode_size[];
        !           121: #define GET_MODE_SIZE(MODE)            (mode_size[(int)(MODE)])
        !           122: 
        !           123: /* Get the size in bytes of the basic parts of an object of mode MODE.  */
        !           124: 
        !           125: extern int mode_unit_size[];
        !           126: #define GET_MODE_UNIT_SIZE(MODE)       (mode_unit_size[(int)(MODE)])
        !           127: 
        !           128: /* Get the number of units in the object.  */
        !           129: 
        !           130: #define GET_MODE_NUNITS(MODE)  \
        !           131:   ((GET_MODE_UNIT_SIZE ((MODE)) == 0) ? 0 \
        !           132:    : (GET_MODE_SIZE ((MODE)) / GET_MODE_UNIT_SIZE ((MODE))))
        !           133: 
        !           134: /* Get the size in bits of an object of mode MODE.  */
        !           135: 
        !           136: #define GET_MODE_BITSIZE(MODE)  (BITS_PER_UNIT * mode_size[(int)(MODE)])
        !           137: 
        !           138: /* Get a bitmask containing 1 for all bits in a word
        !           139:    that fit within mode MODE.  */
        !           140: 
        !           141: #define GET_MODE_MASK(MODE)  \
        !           142:    ((GET_MODE_BITSIZE (MODE) >= HOST_BITS_PER_WIDE_INT)  \
        !           143:     ?(HOST_WIDE_INT) ~0 : (((HOST_WIDE_INT) 1 << GET_MODE_BITSIZE (MODE)) - 1))
        !           144: 
        !           145: /* Get the next wider natural mode (eg, QI -> HI -> SI -> DI -> TI).  */
        !           146: 
        !           147: extern enum machine_mode mode_wider_mode[];
        !           148: #define GET_MODE_WIDER_MODE(MODE)      (mode_wider_mode[(int)(MODE)])
        !           149: 
        !           150: /* Return the mode for data of a given size SIZE and mode class CLASS.
        !           151:    If LIMIT is nonzero, then don't use modes bigger than MAX_FIXED_MODE_SIZE.
        !           152:    The value is BLKmode if no other mode is found.  */
        !           153: 
        !           154: extern enum machine_mode mode_for_size PROTO((unsigned int, enum mode_class, int));
        !           155: 
        !           156: /* Find the best mode to use to access a bit field.  */
        !           157: 
        !           158: extern enum machine_mode get_best_mode PROTO((int, int, int, enum machine_mode, int));
        !           159: 
        !           160: /* Determine alignment, 1<=result<=BIGGEST_ALIGNMENT.  */
        !           161: 
        !           162: #define GET_MODE_ALIGNMENT(MODE)   \
        !           163:   MIN (BIGGEST_ALIGNMENT,         \
        !           164:        MAX (1, (GET_MODE_UNIT_SIZE (MODE) * BITS_PER_UNIT)))
        !           165: 
        !           166: /* For each class, get the narrowest mode in that class.  */
        !           167: 
        !           168: extern enum machine_mode class_narrowest_mode[];
        !           169: #define GET_CLASS_NARROWEST_MODE(CLASS) class_narrowest_mode[(int)(CLASS)]
        !           170: 
        !           171: /* Define the integer modes whose sizes are BITS_PER_UNIT
        !           172:    and BITS_PER_WORD.  */
        !           173: 
        !           174: extern enum machine_mode byte_mode;
        !           175: extern enum machine_mode word_mode;
        !           176: 
        !           177: #endif /* not HAVE_MACHINE_MODES */

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.