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102 lines
2.7 KiB
C
102 lines
2.7 KiB
C
/* Sequent Symmetry target interface, for GDB.
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Copyright (C) 1986, 1987, 1989, 1991, 1994 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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/* many 387-specific items of use taken from i386-dep.c */
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#include "defs.h"
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#include "frame.h"
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#include "inferior.h"
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#include "symtab.h"
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#include <signal.h>
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#include <sys/param.h>
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#include <sys/user.h>
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#include <sys/dir.h>
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#include <sys/ioctl.h>
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#include "gdb_stat.h"
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#include "gdbcore.h"
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#include <fcntl.h>
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void
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symmetry_extract_return_value (struct type *type, char *regbuf, char *valbuf)
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{
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union
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{
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double d;
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int l[2];
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}
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xd;
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struct minimal_symbol *msymbol;
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float f;
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if (TYPE_CODE_FLT == TYPE_CODE (type))
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{
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msymbol = lookup_minimal_symbol ("1167_flt", NULL, NULL);
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if (msymbol != NULL)
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{
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/* found "1167_flt" means 1167, %fp2-%fp3 */
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/* float & double; 19= %fp2, 20= %fp3 */
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/* no single precision on 1167 */
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xd.l[1] = *((int *) ®buf[REGISTER_BYTE (19)]);
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xd.l[0] = *((int *) ®buf[REGISTER_BYTE (20)]);
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switch (TYPE_LENGTH (type))
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{
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case 4:
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/* FIXME: broken for cross-debugging. */
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f = (float) xd.d;
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memcpy (valbuf, &f, TYPE_LENGTH (type));
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break;
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case 8:
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/* FIXME: broken for cross-debugging. */
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memcpy (valbuf, &xd.d, TYPE_LENGTH (type));
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break;
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default:
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error ("Unknown floating point size");
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break;
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}
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}
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else
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{
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/* 387 %st(0), gcc uses this */
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i387_to_double (((int *) ®buf[REGISTER_BYTE (3)]),
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&xd.d);
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switch (TYPE_LENGTH (type))
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{
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case 4: /* float */
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f = (float) xd.d;
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/* FIXME: broken for cross-debugging. */
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memcpy (valbuf, &f, 4);
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break;
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case 8: /* double */
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/* FIXME: broken for cross-debugging. */
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memcpy (valbuf, &xd.d, 8);
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break;
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default:
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error ("Unknown floating point size");
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break;
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}
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}
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}
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else
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{
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memcpy (valbuf, regbuf, TYPE_LENGTH (type));
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}
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}
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