| /* 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., 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 (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)); |
| } |
| } |