This is the mail archive of the gdb-patches@sources.redhat.com mailing list for the GDB project.

Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]
Other format: [Raw text]

Re: [RFA] Support true 'long double' size.


The old patch might still be usefull for other processors,
but I am not sure about that.

We can wait until someone else reports a problem :-)

So here is a new simplified patch proposal:

ChangeLog entry:

2003-03-11 Pierre Muller <muller at ics dot u-strasbg dot fr>

        * doublest.c (floatformat_from_length): Accept also
        the real size of 'long double' type.

Index: doublest.c
===================================================================
RCS file: /cvs/src/src/gdb/doublest.c,v
retrieving revision 1.12
diff -p -u -r1.12 doublest.c
--- doublest.c  27 Feb 2003 18:08:25 -0000      1.12
+++ doublest.c  11 Mar 2003 12:17:52 -0000
@@ -633,6 +633,14 @@ floatformat_from_length (int len)
     return TARGET_DOUBLE_FORMAT;
   else if (len * TARGET_CHAR_BIT == TARGET_LONG_DOUBLE_BIT)
     return TARGET_LONG_DOUBLE_FORMAT;
+  /* On i386 the 'long double' type takes 96 bits,
+     while the real number of used bits is only 80,
+     both in processor and in memory.
+     The code below accepts the real bit size.  */
+  else if ((TARGET_LONG_DOUBLE_FORMAT)

Yes, approved, just write the above as:

(TARGET_LONG_DOUBLE_FORMAT != NULL)

Andrew


+          && (len * TARGET_CHAR_BIT ==
+               TARGET_LONG_DOUBLE_FORMAT->totalsize))
+    return TARGET_LONG_DOUBLE_FORMAT;

   return NULL;
 }




Pierre Muller
Institut Charles Sadron
6,rue Boussingault
F 67083 STRASBOURG CEDEX (France)
mailto:muller at ics dot u-strasbg dot fr
Phone : (33)-3-88-41-40-07  Fax : (33)-3-88-41-40-99




Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]