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trgt.c (132624) trgt.c (142151)
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 *

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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>
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 *

--- 11 unchanged lines hidden (view full) ---

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: head/gnu/usr.bin/gdb/kgdb/trgt.c 132624 2004-07-25 05:29:15Z marcel $");
28__FBSDID("$FreeBSD: head/gnu/usr.bin/gdb/kgdb/trgt.c 142151 2005-02-20 22:55:07Z kan $");
29
29
30#include <sys/types.h>
30#include <sys/param.h>
31#include <sys/proc.h>
32#include <sys/sysctl.h>
33#include <sys/user.h>
31#include <kvm.h>
32
34#include <kvm.h>
35
33#include "kgdb.h"
34
35#include <defs.h>
36#include <defs.h>
37#include <command.h>
36#include <gdbthread.h>
37#include <inferior.h>
38#include <gdbthread.h>
39#include <inferior.h>
40#include <regcache.h>
38#include <target.h>
39
41#include <target.h>
42
43#include "kgdb.h"
44
40static struct target_ops kgdb_trgt_ops;
41
45static struct target_ops kgdb_trgt_ops;
46
47#define KERNOFF (kgdb_kernbase ())
48#define INKERNEL(x) ((x) >= KERNOFF)
49
50static CORE_ADDR
51kgdb_kernbase (void)
52{
53 static CORE_ADDR kernbase;
54 struct minimal_symbol *sym;
55
56 if (kernbase == 0)
57 {
58 sym = lookup_minimal_symbol ("kernbase", NULL, NULL);
59 if (sym == NULL) {
60 kernbase = KERNBASE;
61 } else {
62 kernbase = SYMBOL_VALUE_ADDRESS (sym);
63 }
64 }
65 return kernbase;
66}
67
42static char *
68static char *
43kgdb_trgt_extra_thread_info(struct thread_info *ti __unused)
69kgdb_trgt_extra_thread_info(struct thread_info *ti)
44{
70{
45 return (NULL);
71 return (kgdb_thr_extra_thread_info(ptid_get_tid(ti->ptid)));
46}
47
48static void
49kgdb_trgt_find_new_threads(void)
50{
51}
52
53static char *
54kgdb_trgt_pid_to_str(ptid_t ptid)
55{
72}
73
74static void
75kgdb_trgt_find_new_threads(void)
76{
77}
78
79static char *
80kgdb_trgt_pid_to_str(ptid_t ptid)
81{
56 static char buf[16];
82 static char buf[33];
57
83
58 snprintf(buf, sizeof(buf), "TID %d", ptid_get_pid(ptid));
84 snprintf(buf, sizeof(buf), "PID %5d TID %5ld", ptid_get_pid(ptid),
85 ptid_get_tid(ptid));
59 return (buf);
60}
61
62static int
63kgdb_trgt_thread_alive(ptid_t ptid)
64{
86 return (buf);
87}
88
89static int
90kgdb_trgt_thread_alive(ptid_t ptid)
91{
65 return (kgdb_thr_lookup(ptid_get_pid(ptid)) != NULL);
92 return (kgdb_thr_lookup_tid(ptid_get_tid(ptid)) != NULL);
66}
67
68static int
69kgdb_trgt_xfer_memory(CORE_ADDR memaddr, char *myaddr, int len, int write,
70 struct mem_attrib *attrib __unused, struct target_ops *target __unused)
71{
72 if (len == 0)
73 return (0);
74
75 if (!write)
76 return (kvm_read(kvm, memaddr, myaddr, len));
77 else
78 return (kvm_write(kvm, memaddr, myaddr, len));
79}
80
93}
94
95static int
96kgdb_trgt_xfer_memory(CORE_ADDR memaddr, char *myaddr, int len, int write,
97 struct mem_attrib *attrib __unused, struct target_ops *target __unused)
98{
99 if (len == 0)
100 return (0);
101
102 if (!write)
103 return (kvm_read(kvm, memaddr, myaddr, len));
104 else
105 return (kvm_write(kvm, memaddr, myaddr, len));
106}
107
108static void
109kgdb_switch_to_thread(struct kthr *thr)
110{
111 if (thr->tid == ptid_get_tid(inferior_ptid))
112 return;
113
114 inferior_ptid = ptid_build(thr->pid, 0, thr->tid);
115 flush_cached_frames ();
116 registers_changed ();
117 stop_pc = read_pc ();
118 select_frame (get_current_frame ());
119}
120
121static void
122kgdb_set_proc_cmd (char *arg, int from_tty)
123{
124 CORE_ADDR addr;
125 struct kthr *thr;
126
127 if (!arg)
128 error_no_arg ("proc address for the new context");
129
130 if (kvm == NULL)
131 error ("no kernel core file");
132
133 addr = (CORE_ADDR) parse_and_eval_address (arg);
134
135 if (!INKERNEL (addr)) {
136 thr = kgdb_thr_lookup_pid((int)addr);
137 if (thr == NULL)
138 error ("invalid pid");
139 } else {
140 thr = kgdb_thr_lookup_paddr(addr);
141 if (thr == NULL)
142 error("invalid proc address");
143 }
144 kgdb_switch_to_thread(thr);
145}
146
147static void
148kgdb_set_tid_cmd (char *arg, int from_tty)
149{
150 CORE_ADDR addr;
151 struct kthr *thr;
152
153 if (!arg)
154 error_no_arg ("TID or thread address for the new context");
155
156 if (kvm == NULL)
157 error ("no kernel core file");
158
159 addr = (CORE_ADDR) parse_and_eval_address (arg);
160
161 if (!INKERNEL (addr)) {
162 thr = kgdb_thr_lookup_tid((int)addr);
163 if (thr == NULL)
164 error ("invalid TID");
165 } else {
166 thr = kgdb_thr_lookup_taddr(addr);
167 if (thr == NULL)
168 error("invalid thread address");
169 }
170 kgdb_switch_to_thread(thr);
171}
172
81void
82kgdb_target(void)
83{
84 struct kthr *kt;
85 struct thread_info *ti;
86
87 kgdb_trgt_ops.to_magic = OPS_MAGIC;
88 kgdb_trgt_ops.to_shortname = "kernel";

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100 kgdb_trgt_ops.to_store_registers = kgdb_trgt_store_registers;
101 kgdb_trgt_ops.to_thread_alive = kgdb_trgt_thread_alive;
102 kgdb_trgt_ops.to_xfer_memory = kgdb_trgt_xfer_memory;
103 add_target(&kgdb_trgt_ops);
104 push_target(&kgdb_trgt_ops);
105
106 kt = kgdb_thr_first();
107 while (kt != NULL) {
173void
174kgdb_target(void)
175{
176 struct kthr *kt;
177 struct thread_info *ti;
178
179 kgdb_trgt_ops.to_magic = OPS_MAGIC;
180 kgdb_trgt_ops.to_shortname = "kernel";

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192 kgdb_trgt_ops.to_store_registers = kgdb_trgt_store_registers;
193 kgdb_trgt_ops.to_thread_alive = kgdb_trgt_thread_alive;
194 kgdb_trgt_ops.to_xfer_memory = kgdb_trgt_xfer_memory;
195 add_target(&kgdb_trgt_ops);
196 push_target(&kgdb_trgt_ops);
197
198 kt = kgdb_thr_first();
199 while (kt != NULL) {
108 ti = add_thread(ptid_build(kt->tid, 0, 0));
200 ti = add_thread(ptid_build(kt->pid, 0, kt->tid));
109 kt = kgdb_thr_next(kt);
110 }
201 kt = kgdb_thr_next(kt);
202 }
111 inferior_ptid = ptid_build(curkthr->tid, 0, 0);
203 inferior_ptid = ptid_build(curkthr->pid, 0, curkthr->tid);
204 add_com ("proc", class_obscure, kgdb_set_proc_cmd,
205 "Set current process context");
206 add_com ("tid", class_obscure, kgdb_set_tid_cmd,
207 "Set current process context");
112}
208}