Update FSF address.

[pf3gnuchains/gcc-fork.git] / gcc / machmode.h

diff --git a/gcc/machmode.h b/gcc/machmode.h
index 4f88de0..85b5543 100644 (file)
--- a/gcc/machmode.h
+++ b/gcc/machmode.h
@@ -1,5 +1,5 @@
 /* Machine mode definitions for GNU C-Compiler; included by rtl.h and tree.h.
-   Copyright (C) 1990-1991 Free Software Foundation, Inc.
+   Copyright (C) 1991, 1993, 1994  Free Software Foundation, Inc.
 
 This file is part of GNU CC.
 
@@ -15,9 +15,19 @@ 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.  */
+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,
@@ -33,6 +43,26 @@ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
 #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,
@@ -67,6 +97,17 @@ enum mode_class { MODE_RANDOM, MODE_INT, MODE_FLOAT, MODE_PARTIAL_INT, MODE_CC,
 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[];
@@ -80,7 +121,8 @@ extern int mode_unit_size[];
 /* Get the number of units in the object.  */
 
 #define GET_MODE_NUNITS(MODE)  \
-  (GET_MODE_SIZE ((MODE)) / GET_MODE_UNIT_SIZE ((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.  */
 
@@ -90,17 +132,23 @@ extern int mode_unit_size[];
    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_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 ();
+extern enum machine_mode get_best_mode PROTO((int, int, int, enum machine_mode, int));
 
 /* Determine alignment, 1<=result<=BIGGEST_ALIGNMENT.  */
 
@@ -113,10 +161,11 @@ extern enum machine_mode get_best_mode ();
 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.  */
+/* 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 */