diff options
Diffstat (limited to 'contrib/gcc/machmode.h')
| -rw-r--r-- | contrib/gcc/machmode.h | 171 |
1 files changed, 171 insertions, 0 deletions
diff --git a/contrib/gcc/machmode.h b/contrib/gcc/machmode.h new file mode 100644 index 000000000000..85b554389cff --- /dev/null +++ b/contrib/gcc/machmode.h @@ -0,0 +1,171 @@ +/* Machine mode definitions for GNU C-Compiler; included by rtl.h and tree.h. + Copyright (C) 1991, 1993, 1994 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, 59 Temple Place - Suite 330, +Boston, MA 02111-1307, USA. */ + + +/* Add prototype support. */ +#ifndef PROTO +#if defined (USE_PROTOTYPES) ? USE_PROTOTYPES : defined (__STDC__) +#define PROTO(ARGS) ARGS +#else +#define PROTO(ARGS) () +#endif +#endif + +#ifndef HAVE_MACHINE_MODES + +/* Strictly speaking, this isn't the proper place to include these definitions, + but this file is included by every GCC file. + + Some systems define these in, e.g., param.h. We undefine these names + here to avoid the warnings. We prefer to use our definitions since we + know they are correct. */ + +#undef MIN +#undef MAX + +#define MIN(X,Y) ((X) < (Y) ? (X) : (Y)) +#define MAX(X,Y) ((X) > (Y) ? (X) : (Y)) + +/* Find the largest host integer type and set its size and type. */ + +#ifndef HOST_BITS_PER_WIDE_INT + +#if HOST_BITS_PER_LONG > HOST_BITS_PER_INT +#define HOST_BITS_PER_WIDE_INT HOST_BITS_PER_LONG +#define HOST_WIDE_INT long +#else +#define HOST_BITS_PER_WIDE_INT HOST_BITS_PER_INT +#define HOST_WIDE_INT int +#endif + +#endif + +/* Provide a default way to print an address in hex via printf. */ + +#ifndef HOST_PTR_PRINTF +#define HOST_PTR_PRINTF sizeof (int) == sizeof (char *) ? "%x" : "%lx" +#endif + +/* Make an enum class that gives all the 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, MAX_MODE_CLASS}; + +/* 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)]) + +/* Nonzero if MODE is an integral mode. */ +#define INTEGRAL_MODE_P(MODE) \ + (GET_MODE_CLASS (MODE) == MODE_INT \ + || GET_MODE_CLASS (MODE) == MODE_PARTIAL_INT \ + || GET_MODE_CLASS (MODE) == MODE_COMPLEX_INT) + +/* Nonzero if MODE is a floating-point mode. */ +#define FLOAT_MODE_P(MODE) \ + (GET_MODE_CLASS (MODE) == MODE_FLOAT \ + || GET_MODE_CLASS (MODE) == MODE_COMPLEX_FLOAT) + +/* 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_UNIT_SIZE ((MODE)) == 0) ? 0 \ + : (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_WIDE_INT) \ + ?(HOST_WIDE_INT) ~0 : (((HOST_WIDE_INT) 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)]) + +/* Return the mode for data of a given size SIZE and mode class CLASS. + If LIMIT is nonzero, then don't use modes bigger than MAX_FIXED_MODE_SIZE. + The value is BLKmode if no other mode is found. */ + +extern enum machine_mode mode_for_size PROTO((unsigned int, enum mode_class, int)); + +/* Find the best mode to use to access a bit field. */ + +extern enum machine_mode get_best_mode PROTO((int, int, int, enum machine_mode, int)); + +/* Determine alignment, 1<=result<=BIGGEST_ALIGNMENT. */ + +#define GET_MODE_ALIGNMENT(MODE) \ + MIN (BIGGEST_ALIGNMENT, \ + MAX (1, (GET_MODE_UNIT_SIZE (MODE) * BITS_PER_UNIT))) + +/* For each class, get the narrowest mode in that class. */ + +extern enum machine_mode class_narrowest_mode[]; +#define GET_CLASS_NARROWEST_MODE(CLASS) class_narrowest_mode[(int)(CLASS)] + +/* Define the integer modes whose sizes are BITS_PER_UNIT and BITS_PER_WORD + and the mode whose class is Pmode and whose size is POINTER_SIZE. */ + +extern enum machine_mode byte_mode; +extern enum machine_mode word_mode; +extern enum machine_mode ptr_mode; + +#endif /* not HAVE_MACHINE_MODES */ |