Commit | Line | Data |
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c906108c | 1 | /* Sequent Symmetry target interface, for GDB. |
b6ba6518 KB |
2 | Copyright 1986, 1987, 1989, 1991, 1992, 1993, 1994, 1995, 2000 |
3 | Free Software Foundation, Inc. | |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b JM |
17 | You should have received a copy of the GNU General Public License |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 59 Temple Place - Suite 330, | |
20 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
21 | |
22 | /* many 387-specific items of use taken from i386-dep.c */ | |
23 | ||
24 | #include "defs.h" | |
25 | #include "frame.h" | |
26 | #include "inferior.h" | |
27 | #include "symtab.h" | |
28 | ||
29 | #include <signal.h> | |
30 | #include <sys/param.h> | |
31 | #include <sys/user.h> | |
32 | #include <sys/dir.h> | |
33 | #include <sys/ioctl.h> | |
34 | #include "gdb_stat.h" | |
35 | #include "gdbcore.h" | |
36 | #include <fcntl.h> | |
37 | ||
38 | void | |
fba45db2 | 39 | symmetry_extract_return_value (struct type *type, char *regbuf, char *valbuf) |
c906108c | 40 | { |
c5aa993b JM |
41 | union |
42 | { | |
43 | double d; | |
44 | int l[2]; | |
45 | } | |
46 | xd; | |
c906108c SS |
47 | struct minimal_symbol *msymbol; |
48 | float f; | |
49 | ||
c5aa993b JM |
50 | if (TYPE_CODE_FLT == TYPE_CODE (type)) |
51 | { | |
52 | msymbol = lookup_minimal_symbol ("1167_flt", NULL, NULL); | |
53 | if (msymbol != NULL) | |
54 | { | |
55 | /* found "1167_flt" means 1167, %fp2-%fp3 */ | |
56 | /* float & double; 19= %fp2, 20= %fp3 */ | |
57 | /* no single precision on 1167 */ | |
58 | xd.l[1] = *((int *) ®buf[REGISTER_BYTE (19)]); | |
59 | xd.l[0] = *((int *) ®buf[REGISTER_BYTE (20)]); | |
60 | switch (TYPE_LENGTH (type)) | |
61 | { | |
62 | case 4: | |
63 | /* FIXME: broken for cross-debugging. */ | |
64 | f = (float) xd.d; | |
65 | memcpy (valbuf, &f, TYPE_LENGTH (type)); | |
66 | break; | |
67 | case 8: | |
68 | /* FIXME: broken for cross-debugging. */ | |
69 | memcpy (valbuf, &xd.d, TYPE_LENGTH (type)); | |
70 | break; | |
71 | default: | |
72 | error ("Unknown floating point size"); | |
73 | break; | |
74 | } | |
75 | } | |
76 | else | |
77 | { | |
78 | /* 387 %st(0), gcc uses this */ | |
79 | i387_to_double (((int *) ®buf[REGISTER_BYTE (3)]), | |
80 | &xd.d); | |
81 | switch (TYPE_LENGTH (type)) | |
82 | { | |
83 | case 4: /* float */ | |
84 | f = (float) xd.d; | |
85 | /* FIXME: broken for cross-debugging. */ | |
86 | memcpy (valbuf, &f, 4); | |
87 | break; | |
88 | case 8: /* double */ | |
89 | /* FIXME: broken for cross-debugging. */ | |
90 | memcpy (valbuf, &xd.d, 8); | |
91 | break; | |
92 | default: | |
93 | error ("Unknown floating point size"); | |
94 | break; | |
95 | } | |
96 | } | |
97 | } | |
98 | else | |
99 | { | |
100 | memcpy (valbuf, regbuf, TYPE_LENGTH (type)); | |
c906108c | 101 | } |
c906108c | 102 | } |