2005-09-30 H.J. Lu <hongjiu.lu@intel.com>

[deliverable/binutils-gdb.git] / include / floatformat.h

diff --git a/include/floatformat.h b/include/floatformat.h
index 4335401db5f1d891dc7c94dde0e095b367c8624f..a24487430504148e2a968996da65c88190c227a5 100644 (file)
--- a/include/floatformat.h
+++ b/include/floatformat.h
@@ -1,5 +1,6 @@
 /* IEEE floating point support declarations, for GDB, the GNU Debugger.
-   Copyright 1991, 1994, 1995, 1997, 2000 Free Software Foundation, Inc.
+   Copyright 1991, 1994, 1995, 1997, 2000, 2003, 2005
+   Free Software Foundation, Inc.
 
 This file is part of GDB.
 
@@ -15,7 +16,7 @@ GNU General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program; if not, write to the Free Software
-Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */
 
 #if !defined (FLOATFORMAT_H)
 #define FLOATFORMAT_H 1
@@ -61,8 +62,12 @@ struct floatformat
 
   unsigned int exp_start;
   unsigned int exp_len;
-  /* Amount added to "true" exponent.  0x3fff for many IEEE extendeds.  */
-  unsigned int exp_bias;
+  /* Bias added to a "true" exponent to form the biased exponent.  It
+     is intentionally signed as, otherwize, -exp_bias can turn into a
+     very large number (e.g., given the exp_bias of 0x3fff and a 64
+     bit long, the equation (long)(1 - exp_bias) evaluates to
+     4294950914) instead of -16382).  */
+  int exp_bias;
   /* Exponent value which indicates NaN.  This is the actual value stored in
      the float, not adjusted by the exp_bias.  This usually consists of all
      one bits.  */
@@ -76,6 +81,9 @@ struct floatformat
 
   /* Internal name for debugging. */
   const char *name;
+
+  /* Validator method.  */
+  int (*is_valid) (const struct floatformat *fmt, const void *from);
 };
 
 /* floatformats for IEEE single and double, big and little endian.  */
@@ -95,20 +103,31 @@ extern const struct floatformat floatformat_i387_ext;
 extern const struct floatformat floatformat_m68881_ext;
 extern const struct floatformat floatformat_i960_ext;
 extern const struct floatformat floatformat_m88110_ext;
-extern const struct floatformat floatformat_arm_ext;
+extern const struct floatformat floatformat_m88110_harris_ext;
+extern const struct floatformat floatformat_arm_ext_big;
+extern const struct floatformat floatformat_arm_ext_littlebyte_bigword;
+/* IA-64 Floating Point register spilt into memory.  */
+extern const struct floatformat floatformat_ia64_spill_big;
+extern const struct floatformat floatformat_ia64_spill_little;
+extern const struct floatformat floatformat_ia64_quad_big;
+extern const struct floatformat floatformat_ia64_quad_little;
 
 /* Convert from FMT to a double.
    FROM is the address of the extended float.
    Store the double in *TO.  */
 
 extern void
-floatformat_to_double PARAMS ((const struct floatformat *, char *, double *));
+floatformat_to_double (const struct floatformat *, const void *, double *);
 
 /* The converse: convert the double *FROM to FMT
    and store where TO points.  */
 
 extern void
-floatformat_from_double PARAMS ((const struct floatformat *,
-                                double *, char *));
+floatformat_from_double (const struct floatformat *, const double *, void *);
+
+/* Return non-zero iff the data at FROM is a valid number in format FMT.  */
+
+extern int
+floatformat_is_valid (const struct floatformat *fmt, const void *from);
 
 #endif /* defined (FLOATFORMAT_H) */