]> CyberLeo.Net >> Repos - FreeBSD/FreeBSD.git/blob - gnu/usr.bin/gdb/kgdb/trgt.c
This commit was generated by cvs2svn to compensate for changes in r152069,
[FreeBSD/FreeBSD.git] / gnu / usr.bin / gdb / kgdb / trgt.c
1 /*
2  * Copyright (c) 2004 Marcel Moolenaar
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  *
9  * 1. Redistributions of source code must retain the above copyright
10  *    notice, this list of conditions and the following disclaimer.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  *    notice, this list of conditions and the following disclaimer in the
13  *    documentation and/or other materials provided with the distribution.
14  *
15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25  */
26
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
29
30 #include <sys/param.h>
31 #include <sys/proc.h>
32 #include <sys/sysctl.h>
33 #include <sys/user.h>
34 #include <kvm.h>
35
36 #include <defs.h>
37 #include <command.h>
38 #include <frame-unwind.h>
39 #include <gdbthread.h>
40 #include <inferior.h>
41 #include <regcache.h>
42 #include <target.h>
43
44 #include "kgdb.h"
45
46 static struct target_ops kgdb_trgt_ops;
47
48 static char *
49 kgdb_trgt_extra_thread_info(struct thread_info *ti)
50 {
51         static char buf[64];
52         char *p, *s;
53
54         p = buf + snprintf(buf, sizeof(buf), "PID=%d", ptid_get_pid(ti->ptid));
55         s = kgdb_thr_extra_thread_info(ptid_get_tid(ti->ptid));
56         if (s != NULL)
57                 snprintf(p, sizeof(buf) - (p - buf), ": %s", s);
58         return (buf);
59 }
60
61 static void
62 kgdb_trgt_files_info(struct target_ops *target)
63 {
64         struct target_ops *tb;
65
66         tb = find_target_beneath(target);
67         if (tb->to_files_info != NULL)
68                 tb->to_files_info(tb);
69 }
70
71 static void
72 kgdb_trgt_find_new_threads(void)
73 {
74         struct target_ops *tb;
75
76         if (kvm != NULL)
77                 return;
78
79         tb = find_target_beneath(&kgdb_trgt_ops);
80         if (tb->to_find_new_threads != NULL)
81                 tb->to_find_new_threads();
82 }
83
84 static char *
85 kgdb_trgt_pid_to_str(ptid_t ptid)
86 {
87         static char buf[33];
88
89         snprintf(buf, sizeof(buf), "Thread %ld", ptid_get_tid(ptid));
90         return (buf);
91 }
92
93 static int
94 kgdb_trgt_thread_alive(ptid_t ptid)
95 {
96         return (kgdb_thr_lookup_tid(ptid_get_tid(ptid)) != NULL);
97 }
98
99 static int
100 kgdb_trgt_xfer_memory(CORE_ADDR memaddr, char *myaddr, int len, int write,
101     struct mem_attrib *attrib, struct target_ops *target)
102 {
103         struct target_ops *tb;
104
105         if (kvm != NULL) {
106                 if (len == 0)
107                         return (0);
108                 if (!write)
109                         return (kvm_read(kvm, memaddr, myaddr, len));
110                 else
111                         return (kvm_write(kvm, memaddr, myaddr, len));
112         }
113         tb = find_target_beneath(target);
114         return (tb->to_xfer_memory(memaddr, myaddr, len, write, attrib, tb));
115 }
116
117 void
118 kgdb_target(void)
119 {
120         struct kthr *kt;
121         struct thread_info *ti;
122
123         kgdb_trgt_ops.to_magic = OPS_MAGIC;
124         kgdb_trgt_ops.to_shortname = "kernel";
125         kgdb_trgt_ops.to_longname = "kernel core files.";
126         kgdb_trgt_ops.to_doc = "Kernel core files.";
127         kgdb_trgt_ops.to_stratum = thread_stratum;
128         kgdb_trgt_ops.to_has_memory = 1;
129         kgdb_trgt_ops.to_has_registers = 1;
130         kgdb_trgt_ops.to_has_stack = 1;
131
132         kgdb_trgt_ops.to_extra_thread_info = kgdb_trgt_extra_thread_info;
133         kgdb_trgt_ops.to_fetch_registers = kgdb_trgt_fetch_registers;
134         kgdb_trgt_ops.to_files_info = kgdb_trgt_files_info;
135         kgdb_trgt_ops.to_find_new_threads = kgdb_trgt_find_new_threads;
136         kgdb_trgt_ops.to_pid_to_str = kgdb_trgt_pid_to_str;
137         kgdb_trgt_ops.to_store_registers = kgdb_trgt_store_registers;
138         kgdb_trgt_ops.to_thread_alive = kgdb_trgt_thread_alive;
139         kgdb_trgt_ops.to_xfer_memory = kgdb_trgt_xfer_memory;
140         add_target(&kgdb_trgt_ops);
141         push_target(&kgdb_trgt_ops);
142
143         kt = kgdb_thr_first();
144         while (kt != NULL) {
145                 ti = add_thread(ptid_build(kt->pid, 0, kt->tid));
146                 kt = kgdb_thr_next(kt);
147         }
148         if (curkthr != 0)
149                 inferior_ptid = ptid_build(curkthr->pid, 0, curkthr->tid);
150 }