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dd3b648e RP |
1 | /* Low level MIPS interface to ptrace, for GDB when running under Unix. |
2 | Copyright (C) 1988, 1989, 1991 Free Software Foundation, Inc. | |
3 | Contributed by Alessandro Forin(af@cs.cmu.edu) at CMU | |
4 | and by Per Bothner(bothner@cs.wisc.edu) at U.Wisconsin. | |
5 | ||
6 | This file is part of GDB. | |
7 | ||
99a7de40 | 8 | This program is free software; you can redistribute it and/or modify |
dd3b648e | 9 | it under the terms of the GNU General Public License as published by |
99a7de40 JG |
10 | the Free Software Foundation; either version 2 of the License, or |
11 | (at your option) any later version. | |
dd3b648e | 12 | |
99a7de40 | 13 | This program is distributed in the hope that it will be useful, |
dd3b648e RP |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
99a7de40 JG |
19 | along with this program; if not, write to the Free Software |
20 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
dd3b648e RP |
21 | |
22 | #include <stdio.h> | |
625453dc SG |
23 | #ifdef sgi |
24 | #include <sys/inst.h> | |
25 | #else | |
dd3b648e | 26 | #include <mips/inst.h> |
625453dc | 27 | #endif |
dd3b648e RP |
28 | #include "defs.h" |
29 | #include "param.h" | |
30 | #include "frame.h" | |
31 | #include "inferior.h" | |
32 | #include "symtab.h" | |
33 | #include "value.h" | |
34 | ||
35 | #ifdef USG | |
36 | #include <sys/types.h> | |
37 | #endif | |
38 | ||
39 | #include <sys/param.h> | |
40 | #include <sys/dir.h> | |
41 | #include <signal.h> | |
42 | #include <sys/ioctl.h> | |
43 | /* #include <fcntl.h> Can we live without this? */ | |
44 | ||
45 | #include "gdbcore.h" | |
46 | ||
47 | #include <sys/user.h> /* After a.out.h */ | |
48 | #include <sys/file.h> | |
49 | #include <sys/stat.h> | |
50 | ||
625453dc SG |
51 | /* For now we stub this out; sgi format is super-hairy (and completely |
52 | different in the new release) */ | |
53 | ||
54 | #ifdef sgi | |
55 | void | |
56 | fetch_core_registers () | |
57 | { | |
58 | return; | |
59 | } | |
60 | ||
61 | void | |
62 | fetch_inferior_registers () | |
63 | { | |
64 | return; | |
65 | } | |
66 | ||
67 | store_inferior_registers (regno) | |
68 | int regno; | |
69 | { | |
70 | return; | |
71 | } | |
72 | ||
73 | ||
74 | #else | |
75 | ||
dd3b648e RP |
76 | /* Get all registers from the inferior */ |
77 | ||
78 | void | |
79 | fetch_inferior_registers () | |
80 | { | |
81 | register int regno; | |
82 | register unsigned int regaddr; | |
83 | char buf[MAX_REGISTER_RAW_SIZE]; | |
84 | register int i; | |
85 | ||
86 | registers_fetched (); | |
87 | ||
88 | for (regno = 1; regno < NUM_REGS; regno++) | |
89 | { | |
90 | regaddr = register_addr (regno, 1); | |
91 | for (i = 0; i < REGISTER_RAW_SIZE (regno); i += sizeof (int)) | |
92 | { | |
93 | *(int *) &buf[i] = ptrace (3, inferior_pid, regaddr, 0); | |
94 | regaddr += sizeof (int); | |
95 | } | |
96 | supply_register (regno, buf); | |
97 | } | |
98 | } | |
99 | ||
100 | /* Store our register values back into the inferior. | |
101 | If REGNO is -1, do this for all registers. | |
102 | Otherwise, REGNO specifies which register (so we can save time). */ | |
103 | ||
625453dc | 104 | void |
dd3b648e RP |
105 | store_inferior_registers (regno) |
106 | int regno; | |
625453dc | 107 | { |
dd3b648e RP |
108 | register unsigned int regaddr; |
109 | char buf[80]; | |
110 | ||
111 | if (regno == 0) | |
112 | return; | |
113 | ||
114 | if (regno > 0) | |
115 | { | |
116 | regaddr = register_addr (regno, 1); | |
117 | errno = 0; | |
118 | ptrace (6, inferior_pid, regaddr, read_register (regno)); | |
119 | if (errno != 0) | |
120 | { | |
121 | sprintf (buf, "writing register number %d", regno); | |
122 | perror_with_name (buf); | |
123 | } | |
124 | } | |
125 | else | |
126 | { | |
127 | for (regno = 1; regno < NUM_REGS; regno++) | |
128 | { | |
a18e7917 PB |
129 | if (regno == 32 || regno == 35 || regno == 36 |
130 | || regno == 71 || regno == FP_REGNUM) | |
dd3b648e RP |
131 | continue; |
132 | regaddr = register_addr (regno, 1); | |
133 | errno = 0; | |
134 | ptrace (6, inferior_pid, regaddr, read_register (regno)); | |
135 | if (errno != 0) | |
136 | { | |
137 | sprintf (buf, "writing all regs, number %d", regno); | |
138 | perror_with_name (buf); | |
139 | } | |
140 | } | |
141 | } | |
142 | } | |
143 | ||
625453dc SG |
144 | #endif /* sgi */ |
145 | ||
31ef19fc | 146 | #if 0 |
dd3b648e RP |
147 | void |
148 | fetch_core_registers () | |
149 | { | |
150 | register int regno; | |
151 | int val; | |
152 | ||
153 | for (regno = 1; regno < NUM_REGS; regno++) { | |
154 | char buf[MAX_REGISTER_RAW_SIZE]; | |
155 | ||
156 | val = bfd_seek (core_bfd, register_addr (regno, 0)); | |
157 | if (val < 0 || (val = bfd_read (core_bfd, buf, sizeof buf)) < 0) { | |
158 | char buffer[50]; | |
159 | strcpy (buffer, "Reading register "); | |
160 | strcat (buffer, reg_names[regno]); | |
161 | ||
162 | perror_with_name (buffer); | |
163 | } | |
164 | supply_register (regno, buf); | |
165 | } | |
166 | } | |
31ef19fc | 167 | #endif /* 0 */ |