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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 | ||
8 | GDB is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 1, or (at your option) | |
11 | any later version. | |
12 | ||
13 | GDB is distributed in the hope that it will be useful, | |
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 | |
19 | along with GDB; see the file COPYING. If not, write to | |
20 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
21 | ||
22 | #include <stdio.h> | |
23 | #include <mips/inst.h> | |
24 | #include "defs.h" | |
25 | #include "param.h" | |
26 | #include "frame.h" | |
27 | #include "inferior.h" | |
28 | #include "symtab.h" | |
29 | #include "value.h" | |
30 | ||
31 | #ifdef USG | |
32 | #include <sys/types.h> | |
33 | #endif | |
34 | ||
35 | #include <sys/param.h> | |
36 | #include <sys/dir.h> | |
37 | #include <signal.h> | |
38 | #include <sys/ioctl.h> | |
39 | /* #include <fcntl.h> Can we live without this? */ | |
40 | ||
41 | #include "gdbcore.h" | |
42 | ||
43 | #include <sys/user.h> /* After a.out.h */ | |
44 | #include <sys/file.h> | |
45 | #include <sys/stat.h> | |
46 | ||
47 | /* Get all registers from the inferior */ | |
48 | ||
49 | void | |
50 | fetch_inferior_registers () | |
51 | { | |
52 | register int regno; | |
53 | register unsigned int regaddr; | |
54 | char buf[MAX_REGISTER_RAW_SIZE]; | |
55 | register int i; | |
56 | ||
57 | registers_fetched (); | |
58 | ||
59 | for (regno = 1; regno < NUM_REGS; regno++) | |
60 | { | |
61 | regaddr = register_addr (regno, 1); | |
62 | for (i = 0; i < REGISTER_RAW_SIZE (regno); i += sizeof (int)) | |
63 | { | |
64 | *(int *) &buf[i] = ptrace (3, inferior_pid, regaddr, 0); | |
65 | regaddr += sizeof (int); | |
66 | } | |
67 | supply_register (regno, buf); | |
68 | } | |
69 | } | |
70 | ||
71 | /* Store our register values back into the inferior. | |
72 | If REGNO is -1, do this for all registers. | |
73 | Otherwise, REGNO specifies which register (so we can save time). */ | |
74 | ||
75 | store_inferior_registers (regno) | |
76 | int regno; | |
77 | { | |
78 | register unsigned int regaddr; | |
79 | char buf[80]; | |
80 | ||
81 | if (regno == 0) | |
82 | return; | |
83 | ||
84 | if (regno > 0) | |
85 | { | |
86 | regaddr = register_addr (regno, 1); | |
87 | errno = 0; | |
88 | ptrace (6, inferior_pid, regaddr, read_register (regno)); | |
89 | if (errno != 0) | |
90 | { | |
91 | sprintf (buf, "writing register number %d", regno); | |
92 | perror_with_name (buf); | |
93 | } | |
94 | } | |
95 | else | |
96 | { | |
97 | for (regno = 1; regno < NUM_REGS; regno++) | |
98 | { | |
99 | if (regno == 32 || regno == 35 || regno == 36 || regno == 71) | |
100 | continue; | |
101 | regaddr = register_addr (regno, 1); | |
102 | errno = 0; | |
103 | ptrace (6, inferior_pid, regaddr, read_register (regno)); | |
104 | if (errno != 0) | |
105 | { | |
106 | sprintf (buf, "writing all regs, number %d", regno); | |
107 | perror_with_name (buf); | |
108 | } | |
109 | } | |
110 | } | |
111 | } | |
112 | ||
113 | void | |
114 | fetch_core_registers () | |
115 | { | |
116 | register int regno; | |
117 | int val; | |
118 | ||
119 | for (regno = 1; regno < NUM_REGS; regno++) { | |
120 | char buf[MAX_REGISTER_RAW_SIZE]; | |
121 | ||
122 | val = bfd_seek (core_bfd, register_addr (regno, 0)); | |
123 | if (val < 0 || (val = bfd_read (core_bfd, buf, sizeof buf)) < 0) { | |
124 | char buffer[50]; | |
125 | strcpy (buffer, "Reading register "); | |
126 | strcat (buffer, reg_names[regno]); | |
127 | ||
128 | perror_with_name (buffer); | |
129 | } | |
130 | supply_register (regno, buf); | |
131 | } | |
132 | } |