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/* Sequent Symmetry target interface, for GDB.
Copyright (C) 1986, 1987, 1989, 1991, 1994 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., 675 Mass Ave, Cambridge, MA 02139, 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 <sys/stat.h>
#include "gdbcore.h"
#include <fcntl.h>
void
symmetry_extract_return_value(type, regbuf, valbuf)
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", (struct objfile *) 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));
}
}
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