OpenOCD
target_type.h
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1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 
3 /***************************************************************************
4  * Copyright (C) 2005 by Dominic Rath *
5  * Dominic.Rath@gmx.de *
6  * *
7  * Copyright (C) 2007-2010 Øyvind Harboe *
8  * oyvind.harboe@zylin.com *
9  * *
10  * Copyright (C) 2008 by Spencer Oliver *
11  * spen@spen-soft.co.uk *
12  ***************************************************************************/
13 
14 #ifndef OPENOCD_TARGET_TARGET_TYPE_H
15 #define OPENOCD_TARGET_TARGET_TYPE_H
16 
17 #include <helper/jim-nvp.h>
18 
19 struct target;
20 
26 struct target_type {
31  const char *name;
32 
33  /* poll current target status */
34  int (*poll)(struct target *target);
35  /* Invoked only from target_arch_state().
36  * Issue USER() w/architecture specific status. */
37  int (*arch_state)(struct target *target);
38 
39  /* target request support */
40  int (*target_request_data)(struct target *target, uint32_t size, uint8_t *buffer);
41 
42  /* halt will log a warning, but return ERROR_OK if the target is already halted. */
43  int (*halt)(struct target *target);
44  /* See target.c target_resume() for documentation. */
45  int (*resume)(struct target *target, int current, target_addr_t address,
46  int handle_breakpoints, int debug_execution);
47  int (*step)(struct target *target, int current, target_addr_t address,
48  int handle_breakpoints);
49  /* target reset control. assert reset can be invoked when OpenOCD and
50  * the target is out of sync.
51  *
52  * A typical example is that the target was power cycled while OpenOCD
53  * thought the target was halted or running.
54  *
55  * assert_reset() can therefore make no assumptions whatsoever about the
56  * state of the target
57  *
58  * Before assert_reset() for the target is invoked, a TRST/tms and
59  * chain validation is executed. TRST should not be asserted
60  * during target assert unless there is no way around it due to
61  * the way reset's are configured.
62  *
63  */
64  int (*assert_reset)(struct target *target);
76  int (*deassert_reset)(struct target *target);
77  int (*soft_reset_halt)(struct target *target);
78 
86  const char *(*get_gdb_arch)(struct target *target);
87 
99  int (*get_gdb_reg_list)(struct target *target, struct reg **reg_list[],
100  int *reg_list_size, enum target_register_class reg_class);
101 
106  struct reg **reg_list[], int *reg_list_size,
107  enum target_register_class reg_class);
108 
109  /* target memory access
110  * size: 1 = byte (8bit), 2 = half-word (16bit), 4 = word (32bit)
111  * count: number of items of <size>
112  */
113 
118  int (*read_memory)(struct target *target, target_addr_t address,
119  uint32_t size, uint32_t count, uint8_t *buffer);
124  int (*write_memory)(struct target *target, target_addr_t address,
125  uint32_t size, uint32_t count, const uint8_t *buffer);
126 
127  /* Default implementation will do some fancy alignment to improve performance, target can override */
128  int (*read_buffer)(struct target *target, target_addr_t address,
129  uint32_t size, uint8_t *buffer);
130 
131  /* Default implementation will do some fancy alignment to improve performance, target can override */
132  int (*write_buffer)(struct target *target, target_addr_t address,
133  uint32_t size, const uint8_t *buffer);
134 
135  int (*checksum_memory)(struct target *target, target_addr_t address,
136  uint32_t count, uint32_t *checksum);
138  struct target_memory_check_block *blocks, int num_blocks,
139  uint8_t erased_value);
140 
141  /*
142  * target break-/watchpoint control
143  * rw: 0 = write, 1 = read, 2 = access
144  *
145  * Target must be halted while this is invoked as this
146  * will actually set up breakpoints on target.
147  *
148  * The breakpoint hardware will be set up upon adding the
149  * first breakpoint.
150  *
151  * Upon GDB connection all breakpoints/watchpoints are cleared.
152  */
156 
157  /* remove breakpoint. hw will only be updated if the target
158  * is currently halted.
159  * However, this method can be invoked on unresponsive targets.
160  */
162 
163  /* add watchpoint ... see add_breakpoint() comment above. */
165 
166  /* remove watchpoint. hw will only be updated if the target
167  * is currently halted.
168  * However, this method can be invoked on unresponsive targets.
169  */
171 
172  /* Find out just hit watchpoint. After the target hits a watchpoint, the
173  * information could assist gdb to locate where the modified/accessed memory is.
174  */
176 
181  int (*run_algorithm)(struct target *target, int num_mem_params,
182  struct mem_param *mem_params, int num_reg_params,
183  struct reg_param *reg_param, target_addr_t entry_point,
184  target_addr_t exit_point, int timeout_ms, void *arch_info);
185  int (*start_algorithm)(struct target *target, int num_mem_params,
186  struct mem_param *mem_params, int num_reg_params,
187  struct reg_param *reg_param, target_addr_t entry_point,
188  target_addr_t exit_point, void *arch_info);
189  int (*wait_algorithm)(struct target *target, int num_mem_params,
190  struct mem_param *mem_params, int num_reg_params,
191  struct reg_param *reg_param, target_addr_t exit_point,
192  int timeout_ms, void *arch_info);
193 
195 
196  /* called when target is created */
197  int (*target_create)(struct target *target, Jim_Interp *interp);
198 
199  /* called for various config parameters */
200  /* returns JIM_CONTINUE - if option not understood */
201  /* otherwise: JIM_OK, or JIM_ERR, */
202  int (*target_jim_configure)(struct target *target, struct jim_getopt_info *goi);
203 
204  /* target commands specifically handled by the target */
205  /* returns JIM_OK, or JIM_ERR, or JIM_CONTINUE - if option not understood */
206  int (*target_jim_commands)(struct target *target, struct jim_getopt_info *goi);
207 
222  int (*examine)(struct target *target);
223 
224  /* Set up structures for target.
225  *
226  * It is illegal to talk to the target at this stage as this fn is invoked
227  * before the JTAG chain has been examined/verified
228  * */
229  int (*init_target)(struct command_context *cmd_ctx, struct target *target);
230 
247  void (*deinit_target)(struct target *target);
248 
249  /* translate from virtual to physical address. Default implementation is successful
250  * no-op(i.e. virtual==physical).
251  */
252  int (*virt2phys)(struct target *target, target_addr_t address, target_addr_t *physical);
253 
254  /* read directly from physical memory. caches are bypassed and untouched.
255  *
256  * If the target does not support disabling caches, leaving them untouched,
257  * then minimally the actual physical memory location will be read even
258  * if cache states are unchanged, flushed, etc.
259  *
260  * Default implementation is to call read_memory.
261  */
262  int (*read_phys_memory)(struct target *target, target_addr_t phys_address,
263  uint32_t size, uint32_t count, uint8_t *buffer);
264 
265  /*
266  * same as read_phys_memory, except that it writes...
267  */
268  int (*write_phys_memory)(struct target *target, target_addr_t phys_address,
269  uint32_t size, uint32_t count, const uint8_t *buffer);
270 
271  int (*mmu)(struct target *target, int *enabled);
272 
273  /* after reset is complete, the target can check if things are properly set up.
274  *
275  * This can be used to check if e.g. DCC memory writes have been enabled for
276  * arm7/9 targets, which they really should except in the most contrived
277  * circumstances.
278  */
279  int (*check_reset)(struct target *target);
280 
281  /* get GDB file-I/O parameters from target
282  */
283  int (*get_gdb_fileio_info)(struct target *target, struct gdb_fileio_info *fileio_info);
284 
285  /* pass GDB file-I/O response to target
286  */
287  int (*gdb_fileio_end)(struct target *target, int retcode, int fileio_errno, bool ctrl_c);
288 
289  /* Parse target-specific GDB query commands.
290  * The string pointer "response_p" is always assigned by the called function
291  * to a pointer to a NULL-terminated string, even when the function returns
292  * an error. The string memory is not freed by the caller, so this function
293  * must pay attention for possible memory leaks if the string memory is
294  * dynamically allocated.
295  */
296  int (*gdb_query_custom)(struct target *target, const char *packet, char **response_p);
297 
298  /* do target profiling
299  */
300  int (*profiling)(struct target *target, uint32_t *samples,
301  uint32_t max_num_samples, uint32_t *num_samples, uint32_t seconds);
302 
303  /* Return the number of address bits this target supports. This will
304  * typically be 32 for 32-bit targets, and 64 for 64-bit targets. If not
305  * implemented, it's assumed to be 32. */
306  unsigned (*address_bits)(struct target *target);
307 
308  /* Return the number of system bus data bits this target supports. This
309  * will typically be 32 for 32-bit targets, and 64 for 64-bit targets. If
310  * not implemented, it's assumed to be 32. */
311  unsigned int (*data_bits)(struct target *target);
312 };
313 
314 #endif /* OPENOCD_TARGET_TARGET_TYPE_H */
struct target * target
Definition: rtt/rtt.c:26
size_t size
Size of the control block search area.
Definition: rtt/rtt.c:30
A TCL -ish GetOpt like code.
Definition: jim-nvp.h:135
Definition: register.h:111
This holds methods shared between all instances of a given target type.
Definition: target_type.h:26
int(* add_context_breakpoint)(struct target *target, struct breakpoint *breakpoint)
Definition: target_type.h:154
int(* add_breakpoint)(struct target *target, struct breakpoint *breakpoint)
Definition: target_type.h:153
int(* write_memory)(struct target *target, target_addr_t address, uint32_t size, uint32_t count, const uint8_t *buffer)
Target memory write callback.
Definition: target_type.h:124
int(* hit_watchpoint)(struct target *target, struct watchpoint **hit_watchpoint)
Definition: target_type.h:175
const char * name
Name of this type of target.
Definition: target_type.h:31
int(* deassert_reset)(struct target *target)
The implementation is responsible for polling the target such that target->state reflects the state c...
Definition: target_type.h:76
int(* init_target)(struct command_context *cmd_ctx, struct target *target)
Definition: target_type.h:229
int(* get_gdb_reg_list)(struct target *target, struct reg **reg_list[], int *reg_list_size, enum target_register_class reg_class)
Target register access for GDB.
Definition: target_type.h:99
int(* target_request_data)(struct target *target, uint32_t size, uint8_t *buffer)
Definition: target_type.h:40
int(* target_create)(struct target *target, Jim_Interp *interp)
Definition: target_type.h:197
unsigned(* address_bits)(struct target *target)
Definition: target_type.h:306
void(* deinit_target)(struct target *target)
Free all the resources allocated by the target.
Definition: target_type.h:247
int(* halt)(struct target *target)
Definition: target_type.h:43
int(* check_reset)(struct target *target)
Definition: target_type.h:279
int(* gdb_fileio_end)(struct target *target, int retcode, int fileio_errno, bool ctrl_c)
Definition: target_type.h:287
int(* blank_check_memory)(struct target *target, struct target_memory_check_block *blocks, int num_blocks, uint8_t erased_value)
Definition: target_type.h:137
int(* assert_reset)(struct target *target)
Definition: target_type.h:64
int(* resume)(struct target *target, int current, target_addr_t address, int handle_breakpoints, int debug_execution)
Definition: target_type.h:45
const struct command_registration * commands
Definition: target_type.h:194
int(* profiling)(struct target *target, uint32_t *samples, uint32_t max_num_samples, uint32_t *num_samples, uint32_t seconds)
Definition: target_type.h:300
int(* soft_reset_halt)(struct target *target)
Definition: target_type.h:77
int(* arch_state)(struct target *target)
Definition: target_type.h:37
int(* read_memory)(struct target *target, target_addr_t address, uint32_t size, uint32_t count, uint8_t *buffer)
Target memory read callback.
Definition: target_type.h:118
int(* get_gdb_fileio_info)(struct target *target, struct gdb_fileio_info *fileio_info)
Definition: target_type.h:283
unsigned int(* data_bits)(struct target *target)
Definition: target_type.h:311
int(* target_jim_configure)(struct target *target, struct jim_getopt_info *goi)
Definition: target_type.h:202
int(* read_phys_memory)(struct target *target, target_addr_t phys_address, uint32_t size, uint32_t count, uint8_t *buffer)
Definition: target_type.h:262
int(* get_gdb_reg_list_noread)(struct target *target, struct reg **reg_list[], int *reg_list_size, enum target_register_class reg_class)
Same as get_gdb_reg_list, but doesn't read the register values.
Definition: target_type.h:105
int(* mmu)(struct target *target, int *enabled)
Definition: target_type.h:271
int(* start_algorithm)(struct target *target, int num_mem_params, struct mem_param *mem_params, int num_reg_params, struct reg_param *reg_param, target_addr_t entry_point, target_addr_t exit_point, void *arch_info)
Definition: target_type.h:185
int(* read_buffer)(struct target *target, target_addr_t address, uint32_t size, uint8_t *buffer)
Definition: target_type.h:128
int(* step)(struct target *target, int current, target_addr_t address, int handle_breakpoints)
Definition: target_type.h:47
int(* add_watchpoint)(struct target *target, struct watchpoint *watchpoint)
Definition: target_type.h:164
int(* write_buffer)(struct target *target, target_addr_t address, uint32_t size, const uint8_t *buffer)
Definition: target_type.h:132
int(* poll)(struct target *target)
Definition: target_type.h:34
int(* add_hybrid_breakpoint)(struct target *target, struct breakpoint *breakpoint)
Definition: target_type.h:155
int(* examine)(struct target *target)
This method is used to perform target setup that requires JTAG access.
Definition: target_type.h:222
int(* write_phys_memory)(struct target *target, target_addr_t phys_address, uint32_t size, uint32_t count, const uint8_t *buffer)
Definition: target_type.h:268
int(* target_jim_commands)(struct target *target, struct jim_getopt_info *goi)
Definition: target_type.h:206
int(* run_algorithm)(struct target *target, int num_mem_params, struct mem_param *mem_params, int num_reg_params, struct reg_param *reg_param, target_addr_t entry_point, target_addr_t exit_point, int timeout_ms, void *arch_info)
Target algorithm support.
Definition: target_type.h:181
int(* remove_breakpoint)(struct target *target, struct breakpoint *breakpoint)
Definition: target_type.h:161
int(* wait_algorithm)(struct target *target, int num_mem_params, struct mem_param *mem_params, int num_reg_params, struct reg_param *reg_param, target_addr_t exit_point, int timeout_ms, void *arch_info)
Definition: target_type.h:189
int(* gdb_query_custom)(struct target *target, const char *packet, char **response_p)
Definition: target_type.h:296
int(* virt2phys)(struct target *target, target_addr_t address, target_addr_t *physical)
Definition: target_type.h:252
int(* checksum_memory)(struct target *target, target_addr_t address, uint32_t count, uint32_t *checksum)
Definition: target_type.h:135
int(* remove_watchpoint)(struct target *target, struct watchpoint *watchpoint)
Definition: target_type.h:170
Definition: target.h:120
target_register_class
Definition: target.h:114
uint64_t target_addr_t
Definition: types.h:335
uint8_t count[4]
Definition: vdebug.c:22