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