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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", 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));
- }
- }
-