102 lines
2.7 KiB
C
102 lines
2.7 KiB
C
/* Sequent Symmetry target interface, for GDB.
|
|
Copyright 1986, 1987, 1989, 1991, 1992, 1993, 1994, 1995, 2000
|
|
Free Software Foundation, Inc.
|
|
|
|
This file is part of GDB.
|
|
|
|
This program 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 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program 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 this program; if not, write to the Free Software
|
|
Foundation, Inc., 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
/* many 387-specific items of use taken from i386-dep.c */
|
|
|
|
#include "defs.h"
|
|
#include "frame.h"
|
|
#include "inferior.h"
|
|
#include "symtab.h"
|
|
|
|
#include <signal.h>
|
|
#include <sys/param.h>
|
|
#include <sys/user.h>
|
|
#include <sys/dir.h>
|
|
#include <sys/ioctl.h>
|
|
#include "gdb_stat.h"
|
|
#include "gdbcore.h"
|
|
#include <fcntl.h>
|
|
|
|
void
|
|
symmetry_extract_return_value (struct type *type, char *regbuf, char *valbuf)
|
|
{
|
|
union
|
|
{
|
|
double d;
|
|
int l[2];
|
|
}
|
|
xd;
|
|
struct minimal_symbol *msymbol;
|
|
float f;
|
|
|
|
if (TYPE_CODE_FLT == TYPE_CODE (type))
|
|
{
|
|
msymbol = lookup_minimal_symbol ("1167_flt", NULL, NULL);
|
|
if (msymbol != NULL)
|
|
{
|
|
/* found "1167_flt" means 1167, %fp2-%fp3 */
|
|
/* float & double; 19= %fp2, 20= %fp3 */
|
|
/* no single precision on 1167 */
|
|
xd.l[1] = *((int *) ®buf[REGISTER_BYTE (19)]);
|
|
xd.l[0] = *((int *) ®buf[REGISTER_BYTE (20)]);
|
|
switch (TYPE_LENGTH (type))
|
|
{
|
|
case 4:
|
|
/* FIXME: broken for cross-debugging. */
|
|
f = (float) xd.d;
|
|
memcpy (valbuf, &f, TYPE_LENGTH (type));
|
|
break;
|
|
case 8:
|
|
/* FIXME: broken for cross-debugging. */
|
|
memcpy (valbuf, &xd.d, TYPE_LENGTH (type));
|
|
break;
|
|
default:
|
|
error ("Unknown floating point size");
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* 387 %st(0), gcc uses this */
|
|
i387_to_double (((int *) ®buf[REGISTER_BYTE (3)]),
|
|
&xd.d);
|
|
switch (TYPE_LENGTH (type))
|
|
{
|
|
case 4: /* float */
|
|
f = (float) xd.d;
|
|
/* FIXME: broken for cross-debugging. */
|
|
memcpy (valbuf, &f, 4);
|
|
break;
|
|
case 8: /* double */
|
|
/* FIXME: broken for cross-debugging. */
|
|
memcpy (valbuf, &xd.d, 8);
|
|
break;
|
|
default:
|
|
error ("Unknown floating point size");
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
memcpy (valbuf, regbuf, TYPE_LENGTH (type));
|
|
}
|
|
}
|