1 /***************************************************************************
2 * Copyright (C) 2005 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
5 * Copyright (C) 2007,2008 Øyvind Harboe *
6 * oyvind.harboe@zylin.com *
8 * Copyright (C) 2008 by Spencer Oliver *
9 * spen@spen-soft.co.uk *
11 * This program is free software; you can redistribute it and/or modify *
12 * it under the terms of the GNU General Public License as published by *
13 * the Free Software Foundation; either version 2 of the License, or *
14 * (at your option) any later version. *
16 * This program is distributed in the hope that it will be useful, *
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
19 * GNU General Public License for more details. *
21 * You should have received a copy of the GNU General Public License *
22 * along with this program; if not, write to the *
23 * Free Software Foundation, Inc., *
24 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
25 ***************************************************************************/
29 #include "breakpoints.h"
30 #include "algorithm.h"
35 struct command_context_s;
38 * TARGET_UNKNOWN = 0: we don't know anything about the target yet
39 * TARGET_RUNNING = 1: the target is executing user code
40 * TARGET_HALTED = 2: the target is not executing code, and ready to talk to the
41 * debugger. on an xscale it means that the debug handler is executing
42 * TARGET_RESET = 3: the target is being held in reset (only a temporary state,
43 * not sure how this is used with all the recent changes)
44 * TARGET_DEBUG_RUNNING = 4: the target is running, but it is executing code on
45 * behalf of the debugger (e.g. algorithm for flashing)
47 * also see: target_state_name();
57 TARGET_DEBUG_RUNNING = 4,
60 extern const Jim_Nvp nvp_target_state[];
67 extern const Jim_Nvp nvp_assert[];
69 enum target_reset_mode
72 RESET_RUN = 1, /* reset and let target run */
73 RESET_HALT = 2, /* reset and halt target out of reset */
74 RESET_INIT = 3, /* reset and halt target out of reset, then run init script */
77 extern const Jim_Nvp nvp_reset_mode[];
79 enum target_debug_reason
82 DBG_REASON_BREAKPOINT = 1,
83 DBG_REASON_WATCHPOINT = 2,
84 DBG_REASON_WPTANDBKPT = 3,
85 DBG_REASON_SINGLESTEP = 4,
86 DBG_REASON_NOTHALTED = 5,
87 DBG_REASON_UNDEFINED = 6
90 extern const Jim_Nvp nvp_target_debug_reason[];
94 TARGET_ENDIAN_UNKNOWN = 0,
95 TARGET_BIG_ENDIAN = 1, TARGET_LITTLE_ENDIAN = 2
98 extern const Jim_Nvp nvp_target_endian[];
102 typedef struct working_area_s
108 struct working_area_s **user;
109 struct working_area_s *next;
112 // target_type.h contains the full definitionof struct target_type_s
113 struct target_type_s;
114 typedef struct target_type_s target_type_t;
116 /* forward decloration */
117 typedef struct target_event_action_s target_event_action_t;
119 typedef struct target_s
121 target_type_t *type; /* target type definition (name, access functions) */
122 const char *cmd_name; /* tcl Name of target */
123 int target_number; /* DO NOT USE! field to be removed in 2010 */
124 jtag_tap_t *tap; /* where on the jtag chain is this */
125 const char *variant; /* what varient of this chip is it? */
126 target_event_action_t *event_action;
128 int reset_halt; /* attempt resetting the CPU into the halted mode? */
129 uint32_t working_area; /* working area (initialized RAM). Evaluated
130 * upon first allocation from virtual/physical address. */
131 uint32_t working_area_virt; /* virtual address */
132 uint32_t working_area_phys; /* physical address */
133 uint32_t working_area_size; /* size in bytes */
134 uint32_t backup_working_area; /* whether the content of the working area has to be preserved */
135 struct working_area_s *working_areas;/* list of allocated working areas */
136 enum target_debug_reason debug_reason;/* reason why the target entered debug state */
137 enum target_endianess endianness; /* target endianess */
138 // also see: target_state_name()
139 enum target_state state; /* the current backend-state (running, halted, ...) */
140 struct reg_cache_s *reg_cache; /* the first register cache of the target (core regs) */
141 struct breakpoint_s *breakpoints; /* list of breakpoints */
142 struct watchpoint_s *watchpoints; /* list of watchpoints */
143 struct trace_s *trace_info; /* generic trace information */
144 struct debug_msg_receiver_s *dbgmsg;/* list of debug message receivers */
145 uint32_t dbg_msg_enabled; /* debug message status */
146 void *arch_info; /* architecture specific information */
147 struct target_s *next; /* next target in list */
149 int display; /* display async info in telnet session. Do not display
150 * lots of halted/resumed info when stepping in debugger. */
155 /* LD historical names
156 * - Prior to the great TCL change
157 * - June/July/Aug 2008
159 TARGET_EVENT_OLD_gdb_program_config,
160 TARGET_EVENT_OLD_pre_reset,
161 TARGET_EVENT_OLD_post_reset,
162 TARGET_EVENT_OLD_pre_resume,
164 /* allow GDB to do stuff before others handle the halted event,
165 * this is in lieu of defining ordering of invocation of events,
166 * which would be more complicated
168 * Telling GDB to halt does not mean that the target stopped running,
169 * simply that we're dropping out of GDB's waiting for step or continue.
171 * This can be useful when e.g. detecting power dropout.
173 TARGET_EVENT_GDB_HALT,
174 TARGET_EVENT_HALTED, /* target entered debug state from normal execution or reset */
175 TARGET_EVENT_RESUMED, /* target resumed to normal execution */
176 TARGET_EVENT_RESUME_START,
177 TARGET_EVENT_RESUME_END,
179 TARGET_EVENT_GDB_START, /* debugger started execution (step/run) */
180 TARGET_EVENT_GDB_END, /* debugger stopped execution (step/run) */
182 TARGET_EVENT_RESET_START,
183 TARGET_EVENT_RESET_ASSERT_PRE,
184 TARGET_EVENT_RESET_ASSERT_POST,
185 TARGET_EVENT_RESET_DEASSERT_PRE,
186 TARGET_EVENT_RESET_DEASSERT_POST,
187 TARGET_EVENT_RESET_HALT_PRE,
188 TARGET_EVENT_RESET_HALT_POST,
189 TARGET_EVENT_RESET_WAIT_PRE,
190 TARGET_EVENT_RESET_WAIT_POST,
191 TARGET_EVENT_RESET_INIT,
192 TARGET_EVENT_RESET_END,
194 TARGET_EVENT_DEBUG_HALTED, /* target entered debug state, but was executing on behalf of the debugger */
195 TARGET_EVENT_DEBUG_RESUMED, /* target resumed to execute on behalf of the debugger */
197 TARGET_EVENT_EXAMINE_START,
198 TARGET_EVENT_EXAMINE_END,
200 TARGET_EVENT_GDB_ATTACH,
201 TARGET_EVENT_GDB_DETACH,
203 TARGET_EVENT_GDB_FLASH_ERASE_START,
204 TARGET_EVENT_GDB_FLASH_ERASE_END,
205 TARGET_EVENT_GDB_FLASH_WRITE_START,
206 TARGET_EVENT_GDB_FLASH_WRITE_END,
209 struct target_event_action_s {
210 enum target_event event;
213 target_event_action_t *next;
216 typedef struct target_event_callback_s
218 int (*callback)(struct target_s *target, enum target_event event, void *priv);
220 struct target_event_callback_s *next;
221 } target_event_callback_t;
223 typedef struct target_timer_callback_s
225 int (*callback)(void *priv);
230 struct target_timer_callback_s *next;
231 } target_timer_callback_t;
233 extern int target_register_commands(struct command_context_s *cmd_ctx);
234 extern int target_register_user_commands(struct command_context_s *cmd_ctx);
235 extern int target_init(struct command_context_s *cmd_ctx);
236 extern int target_examine(void);
237 extern int handle_target(void *priv);
238 extern int target_process_reset(struct command_context_s *cmd_ctx, enum target_reset_mode reset_mode);
240 extern int target_register_event_callback(int (*callback)(struct target_s *target, enum target_event event, void *priv), void *priv);
241 extern int target_unregister_event_callback(int (*callback)(struct target_s *target, enum target_event event, void *priv), void *priv);
242 extern int target_poll(target_t *target);
243 extern int target_resume(target_t *target, int current, uint32_t address, int handle_breakpoints, int debug_execution);
244 extern int target_halt(target_t *target);
245 extern int target_call_event_callbacks(target_t *target, enum target_event event);
247 /* The period is very approximate, the callback can happen much more often
248 * or much more rarely than specified
250 extern int target_register_timer_callback(int (*callback)(void *priv), int time_ms, int periodic, void *priv);
251 extern int target_unregister_timer_callback(int (*callback)(void *priv), void *priv);
252 extern int target_call_timer_callbacks(void);
253 /* invoke this to ensure that e.g. polling timer callbacks happen before
254 * a syncrhonous command completes.
256 extern int target_call_timer_callbacks_now(void);
258 extern target_t* get_current_target(struct command_context_s *cmd_ctx);
259 extern target_t *get_target(const char *id);
262 * Get the target name.
264 * This routine is a wrapper for the target->type->name field.
266 extern const char *target_get_name(struct target_s *target);
269 * Examine the specified @a target.
271 * This routine is a wrapper for target->type->examine.
273 extern int target_examine_one(struct target_s *target);
274 /// @returns @c true if the target has been examined.
275 extern bool target_was_examined(struct target_s *target);
276 /// Sets the @c examined flag for the given target.
277 extern void target_set_examined(struct target_s *target);
278 /// Reset the @c examined flag for the given target.
279 extern void target_reset_examined(struct target_s *target);
283 * Add the @a breakpoint for @a target.
285 * This routine is a wrapper for target->type->add_breakpoint.
287 extern int target_add_breakpoint(struct target_s *target,
288 struct breakpoint_s *breakpoint);
290 * Remove the @a breakpoint for @a target.
292 * This routine is a wrapper for target->type->remove_breakpoint.
294 extern int target_remove_breakpoint(struct target_s *target,
295 struct breakpoint_s *breakpoint);
297 * Add the @a watchpoint for @a target.
299 * This routine is a wrapper for target->type->add_watchpoint.
301 extern int target_add_watchpoint(struct target_s *target,
302 struct watchpoint_s *watchpoint);
304 * Remove the @a watchpoint for @a target.
306 * This routine is a wrapper for target->type->remove_watchpoint.
308 extern int target_remove_watchpoint(struct target_s *target,
309 struct watchpoint_s *watchpoint);
312 * Obtain the registers for GDB.
314 * This routine is a wrapper for target->type->get_gdb_reg_list.
316 extern int target_get_gdb_reg_list(struct target_s *target,
317 struct reg_s **reg_list[], int *reg_list_size);
322 * This routine is a wrapper for target->type->step.
324 int target_step(struct target_s *target,
325 int current, uint32_t address, int handle_breakpoints);
327 * Run an algorithm on the @a target given.
329 * This routine is a wrapper for target->type->run_algorithm.
331 extern int target_run_algorithm(struct target_s *target,
332 int num_mem_params, mem_param_t *mem_params,
333 int num_reg_params, reg_param_t *reg_param,
334 uint32_t entry_point, uint32_t exit_point,
335 int timeout_ms, void *arch_info);
338 * Read @a count items of @a size bytes from the memory of @a target at
339 * the @a address given.
341 * This routine is a wrapper for target->type->read_memory.
343 extern int target_read_memory(struct target_s *target,
344 uint32_t address, uint32_t size, uint32_t count, uint8_t *buffer);
346 * Write @a count items of @a size bytes to the memory of @a target at
347 * the @a address given.
349 * This routine is wrapper for target->type->write_memory.
351 extern int target_write_memory(struct target_s *target,
352 uint32_t address, uint32_t size, uint32_t count, uint8_t *buffer);
355 * Write @a count items of 4 bytes to the memory of @a target at
356 * the @a address given. Because it operates only on whole words,
357 * this should be faster than target_write_memory().
359 * This routine is wrapper for target->type->bulk_write_memory.
361 extern int target_bulk_write_memory(struct target_s *target,
362 uint32_t address, uint32_t count, uint8_t *buffer);
364 extern int target_write_buffer(struct target_s *target, uint32_t address, uint32_t size, uint8_t *buffer);
365 extern int target_read_buffer(struct target_s *target, uint32_t address, uint32_t size, uint8_t *buffer);
366 extern int target_checksum_memory(struct target_s *target, uint32_t address, uint32_t size, uint32_t* crc);
367 extern int target_blank_check_memory(struct target_s *target, uint32_t address, uint32_t size, uint32_t* blank);
368 extern int target_wait_state(target_t *target, enum target_state state, int ms);
370 /** Return the *name* of this targets current state */
371 const char *target_state_name( target_t *target );
375 * if "area" passed in to target_alloc_working_area() points to a memory
376 * location that goes out of scope (e.g. a pointer on the stack), then
377 * the caller of target_alloc_working_area() is responsible for invoking
378 * target_free_working_area() before "area" goes out of scope.
380 * target_free_all_working_areas() will NULL out the "area" pointer
381 * upon resuming or resetting the CPU.
384 extern int target_alloc_working_area(struct target_s *target, uint32_t size, working_area_t **area);
385 extern int target_free_working_area(struct target_s *target, working_area_t *area);
386 extern int target_free_working_area_restore(struct target_s *target, working_area_t *area, int restore);
387 extern void target_free_all_working_areas(struct target_s *target);
388 extern void target_free_all_working_areas_restore(struct target_s *target, int restore);
390 extern target_t *all_targets;
392 extern target_event_callback_t *target_event_callbacks;
393 extern target_timer_callback_t *target_timer_callbacks;
395 extern uint32_t target_buffer_get_u32(target_t *target, const uint8_t *buffer);
396 extern uint16_t target_buffer_get_u16(target_t *target, const uint8_t *buffer);
397 extern uint8_t target_buffer_get_u8 (target_t *target, const uint8_t *buffer);
398 extern void target_buffer_set_u32(target_t *target, uint8_t *buffer, uint32_t value);
399 extern void target_buffer_set_u16(target_t *target, uint8_t *buffer, uint16_t value);
400 extern void target_buffer_set_u8 (target_t *target, uint8_t *buffer, uint8_t value);
402 int target_read_u32(struct target_s *target, uint32_t address, uint32_t *value);
403 int target_read_u16(struct target_s *target, uint32_t address, uint16_t *value);
404 int target_read_u8(struct target_s *target, uint32_t address, uint8_t *value);
405 int target_write_u32(struct target_s *target, uint32_t address, uint32_t value);
406 int target_write_u16(struct target_s *target, uint32_t address, uint16_t value);
407 int target_write_u8(struct target_s *target, uint32_t address, uint8_t value);
409 /* Issues USER() statements with target state information */
410 int target_arch_state(struct target_s *target);
412 void target_handle_event(target_t *t, enum target_event e);
413 void target_all_handle_event(enum target_event e);
415 #define ERROR_TARGET_INVALID (-300)
416 #define ERROR_TARGET_INIT_FAILED (-301)
417 #define ERROR_TARGET_TIMEOUT (-302)
418 #define ERROR_TARGET_NOT_HALTED (-304)
419 #define ERROR_TARGET_FAILURE (-305)
420 #define ERROR_TARGET_UNALIGNED_ACCESS (-306)
421 #define ERROR_TARGET_DATA_ABORT (-307)
422 #define ERROR_TARGET_RESOURCE_NOT_AVAILABLE (-308)
423 #define ERROR_TARGET_TRANSLATION_FAULT (-309)
424 #define ERROR_TARGET_NOT_RUNNING (-310)
425 #define ERROR_TARGET_NOT_EXAMINED (-311)
427 extern const Jim_Nvp nvp_error_target[];
428 extern const char *target_strerror_safe(int err);
430 #endif /* TARGET_H */