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1 | /* |
1 | /* |
2 | * Copyright (c) 2008 Jiri Svoboda |
2 | * Copyright (c) 2008 Jiri Svoboda |
3 | * All rights reserved. |
3 | * All rights reserved. |
4 | * |
4 | * |
5 | * Redistribution and use in source and binary forms, with or without |
5 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions |
6 | * modification, are permitted provided that the following conditions |
7 | * are met: |
7 | * are met: |
8 | * |
8 | * |
9 | * - Redistributions of source code must retain the above copyright |
9 | * - Redistributions of source code must retain the above copyright |
10 | * notice, this list of conditions and the following disclaimer. |
10 | * notice, this list of conditions and the following disclaimer. |
11 | * - Redistributions in binary form must reproduce the above copyright |
11 | * - Redistributions in binary form must reproduce the above copyright |
12 | * notice, this list of conditions and the following disclaimer in the |
12 | * notice, this list of conditions and the following disclaimer in the |
13 | * documentation and/or other materials provided with the distribution. |
13 | * documentation and/or other materials provided with the distribution. |
14 | * - The name of the author may not be used to endorse or promote products |
14 | * - The name of the author may not be used to endorse or promote products |
15 | * derived from this software without specific prior written permission. |
15 | * derived from this software without specific prior written permission. |
16 | * |
16 | * |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | */ |
27 | */ |
28 | 28 | ||
29 | /** @addtogroup generic |
29 | /** @addtogroup generic |
30 | * @{ |
30 | * @{ |
31 | */ |
31 | */ |
32 | /** @file |
32 | /** @file |
33 | */ |
33 | */ |
34 | 34 | ||
35 | #ifndef KERN_UDEBUG_H_ |
35 | #ifndef KERN_UDEBUG_H_ |
36 | #define KERN_UDEBUG_H_ |
36 | #define KERN_UDEBUG_H_ |
37 | 37 | ||
38 | #include <ipc/ipc.h> |
38 | #include <ipc/ipc.h> |
39 | 39 | ||
40 | typedef enum { /* udebug_method_t */ |
40 | typedef enum { /* udebug_method_t */ |
41 | 41 | ||
42 | /** Start debugging the recipient. |
42 | /** Start debugging the recipient. |
43 | * Causes all threads in the receiving task to stop. When they |
43 | * Causes all threads in the receiving task to stop. When they |
44 | * are all stoped, an answer with retval 0 is generated. |
44 | * are all stoped, an answer with retval 0 is generated. |
45 | */ |
45 | */ |
46 | UDEBUG_M_BEGIN = 1, |
46 | UDEBUG_M_BEGIN = 1, |
47 | 47 | ||
48 | /** Finish debugging the recipient. |
48 | /** Finish debugging the recipient. |
49 | * Answers all pending GO and GUARD messages. |
49 | * Answers all pending GO and GUARD messages. |
50 | */ |
50 | */ |
51 | UDEBUG_M_END, |
51 | UDEBUG_M_END, |
52 | 52 | ||
53 | /** Set which events should be captured. |
53 | /** Set which events should be captured. |
54 | */ |
54 | */ |
55 | UDEBUG_M_SET_EVMASK, |
55 | UDEBUG_M_SET_EVMASK, |
56 | 56 | ||
57 | /** Make sure the debugged task is still there. |
57 | /** Make sure the debugged task is still there. |
58 | * This message is answered when the debugged task dies |
58 | * This message is answered when the debugged task dies |
59 | * or the debugging session ends. |
59 | * or the debugging session ends. |
60 | */ |
60 | */ |
61 | UDEBUG_M_GUARD, |
61 | UDEBUG_M_GUARD, |
62 | 62 | ||
63 | /** Run a thread until a debugging event occurs. |
63 | /** Run a thread until a debugging event occurs. |
64 | * This message is answered when the thread stops |
64 | * This message is answered when the thread stops |
65 | * in a debugging event. |
65 | * in a debugging event. |
66 | * |
66 | * |
67 | * - ARG2 - id of the thread to run |
67 | * - ARG2 - id of the thread to run |
68 | */ |
68 | */ |
69 | UDEBUG_M_GO, |
69 | UDEBUG_M_GO, |
70 | 70 | ||
71 | /** Stop a thread being debugged. |
71 | /** Stop a thread being debugged. |
72 | * Creates a special STOP event in the thread, causing |
72 | * Creates a special STOP event in the thread, causing |
73 | * it to answer a pending GO message (if any). |
73 | * it to answer a pending GO message (if any). |
74 | */ |
74 | */ |
75 | UDEBUG_M_STOP, |
75 | UDEBUG_M_STOP, |
76 | 76 | ||
77 | /** Read arguments of a syscall. |
77 | /** Read arguments of a syscall. |
78 | * |
78 | * |
79 | * - ARG2 - thread identification |
79 | * - ARG2 - thread identification |
80 | * - ARG3 - destination address in the caller's address space |
80 | * - ARG3 - destination address in the caller's address space |
81 | * |
81 | * |
82 | */ |
82 | */ |
83 | UDEBUG_M_ARGS_READ, |
83 | UDEBUG_M_ARGS_READ, |
84 | 84 | ||
85 | /** Read thread's userspace register state (istate_t). |
85 | /** Read thread's userspace register state (istate_t). |
86 | * |
86 | * |
87 | * - ARG2 - thread identification |
87 | * - ARG2 - thread identification |
88 | * - ARG3 - destination address in the caller's address space |
88 | * - ARG3 - destination address in the caller's address space |
89 | * |
89 | * |
90 | * or, on error, retval will be |
90 | * or, on error, retval will be |
91 | * - ENOENT - thread does not exist |
91 | * - ENOENT - thread does not exist |
92 | * - EBUSY - register state not available |
92 | * - EBUSY - register state not available |
93 | */ |
93 | */ |
94 | UDEBUG_M_REGS_READ, |
94 | UDEBUG_M_REGS_READ, |
95 | 95 | ||
96 | /** Write thread's userspace register state (istate_t). |
96 | /** Write thread's userspace register state (istate_t). |
97 | * |
97 | * |
98 | * - ARG2 - thread identification |
98 | * - ARG2 - thread identification |
99 | * - ARG3 - source address in the caller's address space |
99 | * - ARG3 - source address in the caller's address space |
100 | * |
100 | * |
101 | * or, on error, retval will be |
101 | * or, on error, retval will be |
102 | * - ENOENT - thread does not exist |
102 | * - ENOENT - thread does not exist |
103 | * - EBUSY - register state not available |
103 | * - EBUSY - register state not available |
104 | */ |
104 | */ |
105 | UDEBUG_M_REGS_WRITE, |
105 | UDEBUG_M_REGS_WRITE, |
106 | 106 | ||
107 | /** Read the list of the debugged tasks's threads. |
107 | /** Read the list of the debugged tasks's threads. |
108 | * |
108 | * |
109 | * - ARG2 - destination address in the caller's address space |
109 | * - ARG2 - destination address in the caller's address space |
110 | * - ARG3 - size of receiving buffer in bytes |
110 | * - ARG3 - size of receiving buffer in bytes |
111 | * |
111 | * |
112 | * The kernel fills the buffer with a series of sysarg_t values |
112 | * The kernel fills the buffer with a series of sysarg_t values |
113 | * (thread ids). On answer, the kernel will set: |
113 | * (thread ids). On answer, the kernel will set: |
114 | * |
114 | * |
115 | * - ARG2 - number of bytes that were actually copied |
115 | * - ARG2 - number of bytes that were actually copied |
116 | * - ARG3 - number of bytes of the complete data |
116 | * - ARG3 - number of bytes of the complete data |
117 | * |
117 | * |
118 | */ |
118 | */ |
119 | UDEBUG_M_THREAD_READ, |
119 | UDEBUG_M_THREAD_READ, |
120 | 120 | ||
121 | /** Read the debugged tasks's memory. |
121 | /** Read the debugged tasks's memory. |
122 | * |
122 | * |
123 | * - ARG2 - destination address in the caller's address space |
123 | * - ARG2 - destination address in the caller's address space |
124 | * - ARG3 - source address in the recipient's address space |
124 | * - ARG3 - source address in the recipient's address space |
125 | * - ARG4 - size of receiving buffer in bytes |
125 | * - ARG4 - size of receiving buffer in bytes |
126 | * |
126 | * |
127 | */ |
127 | */ |
128 | UDEBUG_M_MEM_READ, |
128 | UDEBUG_M_MEM_READ, |
129 | 129 | ||
130 | /** Write the debugged tasks's memory. |
130 | /** Write the debugged tasks's memory. |
131 | * |
131 | * |
132 | * - ARG2 - source address in the caller's address space |
132 | * - ARG2 - source address in the caller's address space |
133 | * - ARG3 - destination address in the recipient's address space |
133 | * - ARG3 - destination address in the recipient's address space |
134 | * - ARG4 - size of receiving buffer in bytes |
134 | * - ARG4 - size of receiving buffer in bytes |
135 | * |
135 | * |
136 | */ |
136 | */ |
137 | UDEBUG_M_MEM_WRITE |
137 | UDEBUG_M_MEM_WRITE |
138 | 138 | ||
139 | 139 | ||
140 | } udebug_method_t; |
140 | } udebug_method_t; |
141 | 141 | ||
142 | 142 | ||
143 | typedef enum { |
143 | typedef enum { |
144 | UDEBUG_EVENT_FINISHED = 1, /**< Debuging session has finished */ |
144 | UDEBUG_EVENT_FINISHED = 1, /**< Debuging session has finished */ |
145 | UDEBUG_EVENT_STOP, /**< Stopped on DEBUG_STOP request */ |
145 | UDEBUG_EVENT_STOP, /**< Stopped on DEBUG_STOP request */ |
146 | UDEBUG_EVENT_SYSCALL_B, /**< Before beginning syscall execution */ |
146 | UDEBUG_EVENT_SYSCALL_B, /**< Before beginning syscall execution */ |
147 | UDEBUG_EVENT_SYSCALL_E, /**< After finishing syscall execution */ |
147 | UDEBUG_EVENT_SYSCALL_E, /**< After finishing syscall execution */ |
148 | UDEBUG_EVENT_THREAD_B, /**< The task created a new thread */ |
148 | UDEBUG_EVENT_THREAD_B, /**< The task created a new thread */ |
149 | UDEBUG_EVENT_THREAD_E, /**< A thread exited */ |
149 | UDEBUG_EVENT_THREAD_E, /**< A thread exited */ |
150 | UDEBUG_EVENT_BREAKPOINT, /**< Breakpoint instruction executed */ |
150 | UDEBUG_EVENT_BREAKPOINT, /**< Breakpoint instruction executed */ |
151 | UDEBUG_EVENT_TRAP /**< Single-step trap */ |
151 | UDEBUG_EVENT_TRAP /**< Single-step trap */ |
152 | } udebug_event_t; |
152 | } udebug_event_t; |
153 | 153 | ||
154 | #define UDEBUG_EVMASK(event) (1 << ((event) - 1)) |
154 | #define UDEBUG_EVMASK(event) (1 << ((event) - 1)) |
155 | 155 | ||
156 | typedef enum { |
156 | typedef enum { |
157 | UDEBUG_EM_FINISHED = UDEBUG_EVMASK(UDEBUG_EVENT_FINISHED), |
157 | UDEBUG_EM_FINISHED = UDEBUG_EVMASK(UDEBUG_EVENT_FINISHED), |
158 | UDEBUG_EM_STOP = UDEBUG_EVMASK(UDEBUG_EVENT_STOP), |
158 | UDEBUG_EM_STOP = UDEBUG_EVMASK(UDEBUG_EVENT_STOP), |
159 | UDEBUG_EM_SYSCALL_B = UDEBUG_EVMASK(UDEBUG_EVENT_SYSCALL_B), |
159 | UDEBUG_EM_SYSCALL_B = UDEBUG_EVMASK(UDEBUG_EVENT_SYSCALL_B), |
160 | UDEBUG_EM_SYSCALL_E = UDEBUG_EVMASK(UDEBUG_EVENT_SYSCALL_E), |
160 | UDEBUG_EM_SYSCALL_E = UDEBUG_EVMASK(UDEBUG_EVENT_SYSCALL_E), |
161 | UDEBUG_EM_THREAD_B = UDEBUG_EVMASK(UDEBUG_EVENT_THREAD_B), |
161 | UDEBUG_EM_THREAD_B = UDEBUG_EVMASK(UDEBUG_EVENT_THREAD_B), |
162 | UDEBUG_EM_THREAD_E = UDEBUG_EVMASK(UDEBUG_EVENT_THREAD_E), |
162 | UDEBUG_EM_THREAD_E = UDEBUG_EVMASK(UDEBUG_EVENT_THREAD_E), |
163 | UDEBUG_EM_BREAKPOINT = UDEBUG_EVMASK(UDEBUG_EVENT_BREAKPOINT), |
163 | UDEBUG_EM_BREAKPOINT = UDEBUG_EVMASK(UDEBUG_EVENT_BREAKPOINT), |
164 | UDEBUG_EM_TRAP = UDEBUG_EVMASK(UDEBUG_EVENT_TRAP), |
164 | UDEBUG_EM_TRAP = UDEBUG_EVMASK(UDEBUG_EVENT_TRAP), |
165 | UDEBUG_EM_ALL = |
165 | UDEBUG_EM_ALL = |
166 | UDEBUG_EVMASK(UDEBUG_EVENT_FINISHED) | |
166 | UDEBUG_EVMASK(UDEBUG_EVENT_FINISHED) | |
167 | UDEBUG_EVMASK(UDEBUG_EVENT_STOP) | |
167 | UDEBUG_EVMASK(UDEBUG_EVENT_STOP) | |
168 | UDEBUG_EVMASK(UDEBUG_EVENT_SYSCALL_B) | |
168 | UDEBUG_EVMASK(UDEBUG_EVENT_SYSCALL_B) | |
169 | UDEBUG_EVMASK(UDEBUG_EVENT_SYSCALL_E) | |
169 | UDEBUG_EVMASK(UDEBUG_EVENT_SYSCALL_E) | |
170 | UDEBUG_EVMASK(UDEBUG_EVENT_THREAD_B) | |
170 | UDEBUG_EVMASK(UDEBUG_EVENT_THREAD_B) | |
171 | UDEBUG_EVMASK(UDEBUG_EVENT_THREAD_E) | |
171 | UDEBUG_EVMASK(UDEBUG_EVENT_THREAD_E) | |
172 | UDEBUG_EVMASK(UDEBUG_EVENT_BREAKPOINT) | |
172 | UDEBUG_EVMASK(UDEBUG_EVENT_BREAKPOINT) | |
173 | UDEBUG_EVMASK(UDEBUG_EVENT_TRAP) |
173 | UDEBUG_EVMASK(UDEBUG_EVENT_TRAP) |
174 | } udebug_evmask_t; |
174 | } udebug_evmask_t; |
175 | 175 | ||
176 | #ifdef KERNEL |
176 | #ifdef KERNEL |
177 | 177 | ||
178 | typedef enum { |
178 | typedef enum { |
179 | /** Task is not being debugged */ |
179 | /** Task is not being debugged */ |
180 | UDEBUG_TS_INACTIVE, |
180 | UDEBUG_TS_INACTIVE, |
181 | /** BEGIN operation in progress (waiting for threads to stop) */ |
181 | /** BEGIN operation in progress (waiting for threads to stop) */ |
182 | UDEBUG_TS_BEGINNING, |
182 | UDEBUG_TS_BEGINNING, |
183 | /** Debugger fully connected */ |
183 | /** Debugger fully connected */ |
184 | UDEBUG_TS_ACTIVE, |
184 | UDEBUG_TS_ACTIVE, |
185 | /** Task is shutting down, no more debug activities allowed */ |
185 | /** Task is shutting down, no more debug activities allowed */ |
186 | UDEBUG_TS_SHUTDOWN |
186 | UDEBUG_TS_SHUTDOWN |
187 | } udebug_task_state_t; |
187 | } udebug_task_state_t; |
188 | 188 | ||
189 | /** Debugging part of task_t structure. |
189 | /** Debugging part of task_t structure. |
190 | */ |
190 | */ |
191 | typedef struct { |
191 | typedef struct { |
192 | udebug_task_state_t dt_state; |
192 | udebug_task_state_t dt_state; |
193 | call_t *begin_call; |
193 | call_t *begin_call; |
194 | int not_stoppable_count; |
194 | int not_stoppable_count; |
195 | struct task *debugger; |
195 | struct task *debugger; |
196 | udebug_evmask_t evmask; |
196 | udebug_evmask_t evmask; |
197 | } udebug_task_t; |
197 | } udebug_task_t; |
198 | 198 | ||
199 | struct task; |
199 | struct task; |
200 | struct thread; |
200 | struct thread; |
201 | 201 | ||
202 | void udebug_task_init(udebug_task_t *ut); |
202 | void udebug_task_init(udebug_task_t *ut); |
203 | 203 | ||
204 | void udebug_syscall_event(unative_t a1, unative_t a2, unative_t a3, |
204 | void udebug_syscall_event(unative_t a1, unative_t a2, unative_t a3, |
205 | unative_t a4, unative_t a5, unative_t a6, unative_t id, unative_t rc, |
205 | unative_t a4, unative_t a5, unative_t a6, unative_t id, unative_t rc, |
206 | bool end_variant); |
206 | bool end_variant); |
207 | 207 | ||
208 | void udebug_thread_b_event(struct thread *t); |
208 | void udebug_thread_b_event(struct thread *t); |
209 | void udebug_thread_e_event(void); |
209 | void udebug_thread_e_event(void); |
210 | 210 | ||
211 | void udebug_stoppable_begin(void); |
211 | void udebug_stoppable_begin(void); |
212 | void udebug_stoppable_end(void); |
212 | void udebug_stoppable_end(void); |
213 | 213 | ||
- | 214 | void udebug_before_thread_runs(void); |
|
- | 215 | ||
214 | void udebug_breakpoint_event(uintptr_t addr); |
216 | void udebug_breakpoint_event(uintptr_t addr); |
215 | void udebug_trap_event(uintptr_t addr); |
217 | void udebug_trap_event(uintptr_t addr); |
216 | 218 | ||
217 | int udebug_task_cleanup(struct task *ta); |
219 | int udebug_task_cleanup(struct task *ta); |
218 | 220 | ||
219 | #endif |
221 | #endif |
220 | 222 | ||
221 | #endif |
223 | #endif |
222 | 224 | ||
223 | /** @} |
225 | /** @} |
224 | */ |
226 | */ |
225 | 227 |