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1 | /* |
1 | /* |
2 | * Copyright (c) 2006 Ondrej Palkovsky |
2 | * Copyright (c) 2006 Ondrej Palkovsky |
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 amd64debug |
29 | /** @addtogroup amd64debug |
30 | * @{ |
30 | * @{ |
31 | */ |
31 | */ |
32 | /** @file |
32 | /** @file |
33 | */ |
33 | */ |
34 | 34 | ||
35 | #include <arch/debugger.h> |
35 | #include <arch/debugger.h> |
36 | #include <console/kconsole.h> |
36 | #include <console/kconsole.h> |
37 | #include <console/cmd.h> |
37 | #include <console/cmd.h> |
38 | #include <symtab.h> |
38 | #include <symtab.h> |
39 | #include <print.h> |
39 | #include <print.h> |
40 | #include <panic.h> |
40 | #include <panic.h> |
41 | #include <interrupt.h> |
41 | #include <interrupt.h> |
42 | #include <arch/asm.h> |
42 | #include <arch/asm.h> |
43 | #include <arch/cpu.h> |
43 | #include <arch/cpu.h> |
44 | #include <debug.h> |
44 | #include <debug.h> |
45 | #include <func.h> |
45 | #include <func.h> |
46 | #include <smp/ipi.h> |
46 | #include <smp/ipi.h> |
47 | 47 | ||
48 | typedef struct { |
48 | typedef struct { |
49 | uintptr_t address; /**< Breakpoint address */ |
49 | uintptr_t address; /**< Breakpoint address */ |
50 | int flags; /**< Flags regarding breakpoint */ |
50 | int flags; /**< Flags regarding breakpoint */ |
51 | int counter; /**< How many times the exception occured */ |
51 | int counter; /**< How many times the exception occured */ |
52 | } bpinfo_t; |
52 | } bpinfo_t; |
53 | 53 | ||
54 | static bpinfo_t breakpoints[BKPOINTS_MAX]; |
54 | static bpinfo_t breakpoints[BKPOINTS_MAX]; |
55 | SPINLOCK_INITIALIZE(bkpoint_lock); |
55 | SPINLOCK_INITIALIZE(bkpoint_lock); |
56 | 56 | ||
57 | static int cmd_print_breakpoints(cmd_arg_t *argv); |
57 | static int cmd_print_breakpoints(cmd_arg_t *argv); |
58 | static cmd_info_t bkpts_info = { |
58 | static cmd_info_t bkpts_info = { |
59 | .name = "bkpts", |
59 | .name = "bkpts", |
60 | .description = "Print breakpoint table.", |
60 | .description = "Print breakpoint table.", |
61 | .func = cmd_print_breakpoints, |
61 | .func = cmd_print_breakpoints, |
62 | .argc = 0, |
62 | .argc = 0, |
63 | }; |
63 | }; |
64 | 64 | ||
65 | #ifndef CONFIG_DEBUG_AS_WATCHPOINT |
65 | #ifndef CONFIG_DEBUG_AS_WATCHPOINT |
66 | 66 | ||
67 | static int cmd_del_breakpoint(cmd_arg_t *argv); |
67 | static int cmd_del_breakpoint(cmd_arg_t *argv); |
68 | static cmd_arg_t del_argv = { |
68 | static cmd_arg_t del_argv = { |
69 | .type = ARG_TYPE_INT |
69 | .type = ARG_TYPE_INT |
70 | }; |
70 | }; |
71 | static cmd_info_t delbkpt_info = { |
71 | static cmd_info_t delbkpt_info = { |
72 | .name = "delbkpt", |
72 | .name = "delbkpt", |
73 | .description = "delbkpt <number> - Delete breakpoint.", |
73 | .description = "delbkpt <number> - Delete breakpoint.", |
74 | .func = cmd_del_breakpoint, |
74 | .func = cmd_del_breakpoint, |
75 | .argc = 1, |
75 | .argc = 1, |
76 | .argv = &del_argv |
76 | .argv = &del_argv |
77 | }; |
77 | }; |
78 | 78 | ||
79 | static int cmd_add_breakpoint(cmd_arg_t *argv); |
79 | static int cmd_add_breakpoint(cmd_arg_t *argv); |
80 | static cmd_arg_t add_argv = { |
80 | static cmd_arg_t add_argv = { |
81 | .type = ARG_TYPE_INT |
81 | .type = ARG_TYPE_INT |
82 | }; |
82 | }; |
83 | static cmd_info_t addbkpt_info = { |
83 | static cmd_info_t addbkpt_info = { |
84 | .name = "addbkpt", |
84 | .name = "addbkpt", |
85 | .description = "addbkpt <&symbol> - new breakpoint.", |
85 | .description = "addbkpt <&symbol> - new breakpoint.", |
86 | .func = cmd_add_breakpoint, |
86 | .func = cmd_add_breakpoint, |
87 | .argc = 1, |
87 | .argc = 1, |
88 | .argv = &add_argv |
88 | .argv = &add_argv |
89 | }; |
89 | }; |
90 | 90 | ||
91 | static cmd_arg_t addw_argv = { |
91 | static cmd_arg_t addw_argv = { |
92 | .type = ARG_TYPE_INT |
92 | .type = ARG_TYPE_INT |
93 | }; |
93 | }; |
94 | static cmd_info_t addwatchp_info = { |
94 | static cmd_info_t addwatchp_info = { |
95 | .name = "addwatchp", |
95 | .name = "addwatchp", |
96 | .description = "addbwatchp <&symbol> - new write watchpoint.", |
96 | .description = "addbwatchp <&symbol> - new write watchpoint.", |
97 | .func = cmd_add_breakpoint, |
97 | .func = cmd_add_breakpoint, |
98 | .argc = 1, |
98 | .argc = 1, |
99 | .argv = &addw_argv |
99 | .argv = &addw_argv |
100 | }; |
100 | }; |
101 | 101 | ||
102 | #endif |
102 | #endif |
103 | 103 | ||
104 | /** Print table of active breakpoints */ |
104 | /** Print table of active breakpoints */ |
105 | int cmd_print_breakpoints(cmd_arg_t *argv) |
105 | int cmd_print_breakpoints(cmd_arg_t *argv) |
106 | { |
106 | { |
107 | int i; |
107 | int i; |
108 | char *symbol; |
108 | char *symbol; |
109 | 109 | ||
110 | printf("Breakpoint table.\n"); |
110 | printf("Breakpoint table.\n"); |
111 | for (i=0; i < BKPOINTS_MAX; i++) |
111 | for (i=0; i < BKPOINTS_MAX; i++) |
112 | if (breakpoints[i].address) { |
112 | if (breakpoints[i].address) { |
113 | symbol = get_symtab_entry(breakpoints[i].address); |
113 | symbol = get_symtab_entry(breakpoints[i].address); |
114 | printf("%d. %p in %s\n",i, |
114 | printf("%d. %p in %s\n",i, |
115 | breakpoints[i].address, symbol); |
115 | breakpoints[i].address, symbol); |
116 | printf(" Count(%d) ", breakpoints[i].counter); |
116 | printf(" Count(%d) ", breakpoints[i].counter); |
117 | printf("\n"); |
117 | printf("\n"); |
118 | } |
118 | } |
119 | return 1; |
119 | return 1; |
120 | } |
120 | } |
121 | 121 | ||
122 | /* Setup DR register according to table */ |
122 | /* Setup DR register according to table */ |
123 | static void setup_dr(int curidx) |
123 | static void setup_dr(int curidx) |
124 | { |
124 | { |
125 | unative_t dr7; |
125 | unative_t dr7; |
126 | bpinfo_t *cur = &breakpoints[curidx]; |
126 | bpinfo_t *cur = &breakpoints[curidx]; |
127 | int flags = breakpoints[curidx].flags; |
127 | int flags = breakpoints[curidx].flags; |
128 | 128 | ||
129 | /* Disable breakpoint in DR7 */ |
129 | /* Disable breakpoint in DR7 */ |
130 | dr7 = read_dr7(); |
130 | dr7 = read_dr7(); |
131 | dr7 &= ~(0x2 << (curidx*2)); |
131 | dr7 &= ~(0x2 << (curidx*2)); |
132 | 132 | ||
133 | if (cur->address) { /* Setup DR register */ |
133 | if (cur->address) { /* Setup DR register */ |
134 | /* Set breakpoint to debug registers */ |
134 | /* Set breakpoint to debug registers */ |
135 | switch (curidx) { |
135 | switch (curidx) { |
136 | case 0: |
136 | case 0: |
137 | write_dr0(cur->address); |
137 | write_dr0(cur->address); |
138 | break; |
138 | break; |
139 | case 1: |
139 | case 1: |
140 | write_dr1(cur->address); |
140 | write_dr1(cur->address); |
141 | break; |
141 | break; |
142 | case 2: |
142 | case 2: |
143 | write_dr2(cur->address); |
143 | write_dr2(cur->address); |
144 | break; |
144 | break; |
145 | case 3: |
145 | case 3: |
146 | write_dr3(cur->address); |
146 | write_dr3(cur->address); |
147 | break; |
147 | break; |
148 | } |
148 | } |
149 | /* Set type to requested breakpoint & length*/ |
149 | /* Set type to requested breakpoint & length*/ |
150 | dr7 &= ~ (0x3 << (16 + 4*curidx)); |
150 | dr7 &= ~ (0x3 << (16 + 4*curidx)); |
151 | dr7 &= ~ (0x3 << (18 + 4*curidx)); |
151 | dr7 &= ~ (0x3 << (18 + 4*curidx)); |
152 | if ((flags & BKPOINT_INSTR)) { |
152 | if ((flags & BKPOINT_INSTR)) { |
153 | ; |
153 | ; |
154 | } else { |
154 | } else { |
155 | if (sizeof(int) == 4) |
155 | if (sizeof(int) == 4) |
156 | dr7 |= ((unative_t) 0x3) << (18 + 4*curidx); |
156 | dr7 |= ((unative_t) 0x3) << (18 + 4*curidx); |
157 | else /* 8 */ |
157 | else /* 8 */ |
158 | dr7 |= ((unative_t) 0x2) << (18 + 4*curidx); |
158 | dr7 |= ((unative_t) 0x2) << (18 + 4*curidx); |
159 | 159 | ||
160 | if ((flags & BKPOINT_WRITE)) |
160 | if ((flags & BKPOINT_WRITE)) |
161 | dr7 |= ((unative_t) 0x1) << (16 + 4*curidx); |
161 | dr7 |= ((unative_t) 0x1) << (16 + 4*curidx); |
162 | else if ((flags & BKPOINT_READ_WRITE)) |
162 | else if ((flags & BKPOINT_READ_WRITE)) |
163 | dr7 |= ((unative_t) 0x3) << (16 + 4*curidx); |
163 | dr7 |= ((unative_t) 0x3) << (16 + 4*curidx); |
164 | } |
164 | } |
165 | 165 | ||
166 | /* Enable global breakpoint */ |
166 | /* Enable global breakpoint */ |
167 | dr7 |= 0x2 << (curidx*2); |
167 | dr7 |= 0x2 << (curidx*2); |
168 | 168 | ||
169 | write_dr7(dr7); |
169 | write_dr7(dr7); |
170 | 170 | ||
171 | } |
171 | } |
172 | } |
172 | } |
173 | 173 | ||
174 | /** Enable hardware breakpoint |
174 | /** Enable hardware breakpoint |
175 | * |
175 | * |
176 | * |
176 | * |
177 | * @param where Address of HW breakpoint |
177 | * @param where Address of HW breakpoint |
178 | * @param flags Type of breakpoint (EXECUTE, WRITE) |
178 | * @param flags Type of breakpoint (EXECUTE, WRITE) |
179 | * @return Debug slot on success, -1 - no available HW breakpoint |
179 | * @return Debug slot on success, -1 - no available HW breakpoint |
180 | */ |
180 | */ |
181 | int breakpoint_add(void * where, int flags, int curidx) |
181 | int breakpoint_add(void * where, int flags, int curidx) |
182 | { |
182 | { |
183 | ipl_t ipl; |
183 | ipl_t ipl; |
184 | int i; |
184 | int i; |
185 | bpinfo_t *cur; |
185 | bpinfo_t *cur; |
186 | 186 | ||
187 | ASSERT( flags & (BKPOINT_INSTR | BKPOINT_WRITE | BKPOINT_READ_WRITE)); |
187 | ASSERT( flags & (BKPOINT_INSTR | BKPOINT_WRITE | BKPOINT_READ_WRITE)); |
188 | 188 | ||
189 | ipl = interrupts_disable(); |
189 | ipl = interrupts_disable(); |
190 | spinlock_lock(&bkpoint_lock); |
190 | spinlock_lock(&bkpoint_lock); |
191 | 191 | ||
192 | if (curidx == -1) { |
192 | if (curidx == -1) { |
193 | /* Find free space in slots */ |
193 | /* Find free space in slots */ |
194 | for (i=0; i<BKPOINTS_MAX; i++) |
194 | for (i=0; i<BKPOINTS_MAX; i++) |
195 | if (!breakpoints[i].address) { |
195 | if (!breakpoints[i].address) { |
196 | curidx = i; |
196 | curidx = i; |
197 | break; |
197 | break; |
198 | } |
198 | } |
199 | if (curidx == -1) { |
199 | if (curidx == -1) { |
200 | /* Too many breakpoints */ |
200 | /* Too many breakpoints */ |
201 | spinlock_unlock(&bkpoint_lock); |
201 | spinlock_unlock(&bkpoint_lock); |
202 | interrupts_restore(ipl); |
202 | interrupts_restore(ipl); |
203 | return -1; |
203 | return -1; |
204 | } |
204 | } |
205 | } |
205 | } |
206 | cur = &breakpoints[curidx]; |
206 | cur = &breakpoints[curidx]; |
207 | 207 | ||
208 | cur->address = (uintptr_t) where; |
208 | cur->address = (uintptr_t) where; |
209 | cur->flags = flags; |
209 | cur->flags = flags; |
210 | cur->counter = 0; |
210 | cur->counter = 0; |
211 | 211 | ||
212 | setup_dr(curidx); |
212 | setup_dr(curidx); |
213 | 213 | ||
214 | spinlock_unlock(&bkpoint_lock); |
214 | spinlock_unlock(&bkpoint_lock); |
215 | interrupts_restore(ipl); |
215 | interrupts_restore(ipl); |
216 | 216 | ||
217 | /* Send IPI */ |
217 | /* Send IPI */ |
218 | #ifdef CONFIG_SMP |
218 | #ifdef CONFIG_SMP |
219 | // ipi_broadcast(VECTOR_DEBUG_IPI); |
219 | // ipi_broadcast(VECTOR_DEBUG_IPI); |
220 | #endif |
220 | #endif |
221 | 221 | ||
222 | return curidx; |
222 | return curidx; |
223 | } |
223 | } |
224 | 224 | ||
225 | #ifdef amd64 |
225 | #ifdef amd64 |
226 | # define getip(x) ((x)->rip) |
226 | # define getip(x) ((x)->rip) |
227 | #else |
227 | #else |
228 | # define getip(x) ((x)->eip) |
228 | # define getip(x) ((x)->eip) |
229 | #endif |
229 | #endif |
230 | 230 | ||
231 | static void handle_exception(int slot, istate_t *istate) |
231 | static void handle_exception(int slot, istate_t *istate) |
232 | { |
232 | { |
233 | ASSERT(breakpoints[slot].address); |
233 | ASSERT(breakpoints[slot].address); |
234 | 234 | ||
235 | /* Handle zero checker */ |
235 | /* Handle zero checker */ |
236 | if (! (breakpoints[slot].flags & BKPOINT_INSTR)) { |
236 | if (! (breakpoints[slot].flags & BKPOINT_INSTR)) { |
237 | if ((breakpoints[slot].flags & BKPOINT_CHECK_ZERO)) { |
237 | if ((breakpoints[slot].flags & BKPOINT_CHECK_ZERO)) { |
238 | if (*((unative_t *) breakpoints[slot].address) != 0) |
238 | if (*((unative_t *) breakpoints[slot].address) != 0) |
239 | return; |
239 | return; |
240 | printf("**** Found ZERO on address %p ****\n", |
240 | printf("**** Found ZERO on address %p ****\n", |
241 | slot, breakpoints[slot].address); |
241 | slot, breakpoints[slot].address); |
242 | } else { |
242 | } else { |
243 | printf("Data watchpoint - new data: %p\n", |
243 | printf("Data watchpoint - new data: %p\n", |
244 | *((unative_t *) breakpoints[slot].address)); |
244 | *((unative_t *) breakpoints[slot].address)); |
245 | } |
245 | } |
246 | } |
246 | } |
247 | printf("Reached breakpoint %d:%p(%s)\n", slot, getip(istate), |
247 | printf("Reached breakpoint %d:%p(%s)\n", slot, getip(istate), |
248 | get_symtab_entry(getip(istate))); |
248 | get_symtab_entry(getip(istate))); |
249 | printf("***Type 'exit' to exit kconsole.\n"); |
249 | printf("***Type 'exit' to exit kconsole.\n"); |
250 | atomic_set(&haltstate,1); |
250 | atomic_set(&haltstate,1); |
251 | kconsole("debug"); |
251 | kconsole((void *) "debug"); |
252 | atomic_set(&haltstate,0); |
252 | atomic_set(&haltstate,0); |
253 | } |
253 | } |
254 | 254 | ||
255 | void breakpoint_del(int slot) |
255 | void breakpoint_del(int slot) |
256 | { |
256 | { |
257 | bpinfo_t *cur; |
257 | bpinfo_t *cur; |
258 | ipl_t ipl; |
258 | ipl_t ipl; |
259 | 259 | ||
260 | ipl = interrupts_disable(); |
260 | ipl = interrupts_disable(); |
261 | spinlock_lock(&bkpoint_lock); |
261 | spinlock_lock(&bkpoint_lock); |
262 | 262 | ||
263 | cur = &breakpoints[slot]; |
263 | cur = &breakpoints[slot]; |
264 | if (!cur->address) { |
264 | if (!cur->address) { |
265 | spinlock_unlock(&bkpoint_lock); |
265 | spinlock_unlock(&bkpoint_lock); |
266 | interrupts_restore(ipl); |
266 | interrupts_restore(ipl); |
267 | return; |
267 | return; |
268 | } |
268 | } |
269 | 269 | ||
270 | cur->address = NULL; |
270 | cur->address = NULL; |
271 | 271 | ||
272 | setup_dr(slot); |
272 | setup_dr(slot); |
273 | 273 | ||
274 | spinlock_unlock(&bkpoint_lock); |
274 | spinlock_unlock(&bkpoint_lock); |
275 | interrupts_restore(ipl); |
275 | interrupts_restore(ipl); |
276 | #ifdef CONFIG_SMP |
276 | #ifdef CONFIG_SMP |
277 | // ipi_broadcast(VECTOR_DEBUG_IPI); |
277 | // ipi_broadcast(VECTOR_DEBUG_IPI); |
278 | #endif |
278 | #endif |
279 | } |
279 | } |
280 | 280 | ||
281 | #ifndef CONFIG_DEBUG_AS_WATCHPOINT |
281 | #ifndef CONFIG_DEBUG_AS_WATCHPOINT |
282 | 282 | ||
283 | /** Remove breakpoint from table */ |
283 | /** Remove breakpoint from table */ |
284 | int cmd_del_breakpoint(cmd_arg_t *argv) |
284 | int cmd_del_breakpoint(cmd_arg_t *argv) |
285 | { |
285 | { |
286 | if (argv->intval < 0 || argv->intval > BKPOINTS_MAX) { |
286 | if (argv->intval < 0 || argv->intval > BKPOINTS_MAX) { |
287 | printf("Invalid breakpoint number.\n"); |
287 | printf("Invalid breakpoint number.\n"); |
288 | return 0; |
288 | return 0; |
289 | } |
289 | } |
290 | breakpoint_del(argv->intval); |
290 | breakpoint_del(argv->intval); |
291 | return 1; |
291 | return 1; |
292 | } |
292 | } |
293 | 293 | ||
294 | /** Add new breakpoint to table */ |
294 | /** Add new breakpoint to table */ |
295 | static int cmd_add_breakpoint(cmd_arg_t *argv) |
295 | static int cmd_add_breakpoint(cmd_arg_t *argv) |
296 | { |
296 | { |
297 | int flags; |
297 | int flags; |
298 | int id; |
298 | int id; |
299 | 299 | ||
300 | if (argv == &add_argv) { |
300 | if (argv == &add_argv) { |
301 | flags = BKPOINT_INSTR; |
301 | flags = BKPOINT_INSTR; |
302 | } else { /* addwatchp */ |
302 | } else { /* addwatchp */ |
303 | flags = BKPOINT_WRITE; |
303 | flags = BKPOINT_WRITE; |
304 | } |
304 | } |
305 | printf("Adding breakpoint on address: %p\n", argv->intval); |
305 | printf("Adding breakpoint on address: %p\n", argv->intval); |
306 | id = breakpoint_add((void *)argv->intval, flags, -1); |
306 | id = breakpoint_add((void *)argv->intval, flags, -1); |
307 | if (id < 0) |
307 | if (id < 0) |
308 | printf("Add breakpoint failed.\n"); |
308 | printf("Add breakpoint failed.\n"); |
309 | else |
309 | else |
310 | printf("Added breakpoint %d.\n", id); |
310 | printf("Added breakpoint %d.\n", id); |
311 | 311 | ||
312 | return 1; |
312 | return 1; |
313 | } |
313 | } |
314 | #endif |
314 | #endif |
315 | 315 | ||
316 | static void debug_exception(int n, istate_t *istate) |
316 | static void debug_exception(int n, istate_t *istate) |
317 | { |
317 | { |
318 | unative_t dr6; |
318 | unative_t dr6; |
319 | int i; |
319 | int i; |
320 | 320 | ||
321 | /* Set RF to restart the instruction */ |
321 | /* Set RF to restart the instruction */ |
322 | #ifdef amd64 |
322 | #ifdef amd64 |
323 | istate->rflags |= RFLAGS_RF; |
323 | istate->rflags |= RFLAGS_RF; |
324 | #else |
324 | #else |
325 | istate->eflags |= EFLAGS_RF; |
325 | istate->eflags |= EFLAGS_RF; |
326 | #endif |
326 | #endif |
327 | 327 | ||
328 | dr6 = read_dr6(); |
328 | dr6 = read_dr6(); |
329 | for (i=0; i < BKPOINTS_MAX; i++) { |
329 | for (i=0; i < BKPOINTS_MAX; i++) { |
330 | if (dr6 & (1 << i)) { |
330 | if (dr6 & (1 << i)) { |
331 | dr6 &= ~ (1 << i); |
331 | dr6 &= ~ (1 << i); |
332 | write_dr6(dr6); |
332 | write_dr6(dr6); |
333 | 333 | ||
334 | handle_exception(i, istate); |
334 | handle_exception(i, istate); |
335 | } |
335 | } |
336 | } |
336 | } |
337 | } |
337 | } |
338 | 338 | ||
339 | #ifdef CONFIG_SMP |
339 | #ifdef CONFIG_SMP |
340 | static void debug_ipi(int n, istate_t *istate) |
340 | static void debug_ipi(int n, istate_t *istate) |
341 | { |
341 | { |
342 | int i; |
342 | int i; |
343 | 343 | ||
344 | spinlock_lock(&bkpoint_lock); |
344 | spinlock_lock(&bkpoint_lock); |
345 | for (i=0; i < BKPOINTS_MAX; i++) |
345 | for (i=0; i < BKPOINTS_MAX; i++) |
346 | setup_dr(i); |
346 | setup_dr(i); |
347 | spinlock_unlock(&bkpoint_lock); |
347 | spinlock_unlock(&bkpoint_lock); |
348 | } |
348 | } |
349 | #endif |
349 | #endif |
350 | 350 | ||
351 | /** Initialize debugger */ |
351 | /** Initialize debugger */ |
352 | void debugger_init() |
352 | void debugger_init() |
353 | { |
353 | { |
354 | int i; |
354 | int i; |
355 | 355 | ||
356 | for (i=0; i<BKPOINTS_MAX; i++) |
356 | for (i=0; i<BKPOINTS_MAX; i++) |
357 | breakpoints[i].address = NULL; |
357 | breakpoints[i].address = NULL; |
358 | 358 | ||
359 | cmd_initialize(&bkpts_info); |
359 | cmd_initialize(&bkpts_info); |
360 | if (!cmd_register(&bkpts_info)) |
360 | if (!cmd_register(&bkpts_info)) |
361 | panic("could not register command %s\n", bkpts_info.name); |
361 | panic("could not register command %s\n", bkpts_info.name); |
362 | 362 | ||
363 | #ifndef CONFIG_DEBUG_AS_WATCHPOINT |
363 | #ifndef CONFIG_DEBUG_AS_WATCHPOINT |
364 | cmd_initialize(&delbkpt_info); |
364 | cmd_initialize(&delbkpt_info); |
365 | if (!cmd_register(&delbkpt_info)) |
365 | if (!cmd_register(&delbkpt_info)) |
366 | panic("could not register command %s\n", delbkpt_info.name); |
366 | panic("could not register command %s\n", delbkpt_info.name); |
367 | 367 | ||
368 | cmd_initialize(&addbkpt_info); |
368 | cmd_initialize(&addbkpt_info); |
369 | if (!cmd_register(&addbkpt_info)) |
369 | if (!cmd_register(&addbkpt_info)) |
370 | panic("could not register command %s\n", addbkpt_info.name); |
370 | panic("could not register command %s\n", addbkpt_info.name); |
371 | 371 | ||
372 | cmd_initialize(&addwatchp_info); |
372 | cmd_initialize(&addwatchp_info); |
373 | if (!cmd_register(&addwatchp_info)) |
373 | if (!cmd_register(&addwatchp_info)) |
374 | panic("could not register command %s\n", addwatchp_info.name); |
374 | panic("could not register command %s\n", addwatchp_info.name); |
375 | #endif |
375 | #endif |
376 | 376 | ||
377 | exc_register(VECTOR_DEBUG, "debugger", |
377 | exc_register(VECTOR_DEBUG, "debugger", |
378 | debug_exception); |
378 | debug_exception); |
379 | #ifdef CONFIG_SMP |
379 | #ifdef CONFIG_SMP |
380 | exc_register(VECTOR_DEBUG_IPI, "debugger_smp", |
380 | exc_register(VECTOR_DEBUG_IPI, "debugger_smp", |
381 | debug_ipi); |
381 | debug_ipi); |
382 | #endif |
382 | #endif |
383 | } |
383 | } |
384 | 384 | ||
385 | /** @} |
385 | /** @} |
386 | */ |
386 | */ |
387 | 387 |