1 /***************************************************************************
2 * Copyright (C) 2005 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
5 * This program is free software; you can redistribute it and/or modify *
6 * it under the terms of the GNU General Public License as published by *
7 * the Free Software Foundation; either version 2 of the License, or *
8 * (at your option) any later version. *
10 * This program is distributed in the hope that it will be useful, *
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
13 * GNU General Public License for more details. *
15 * You should have received a copy of the GNU General Public License *
16 * along with this program; if not, write to the *
17 * Free Software Foundation, Inc., *
18 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
19 ***************************************************************************/
24 #include "breakpoints.h"
25 #include "algorithm.h"
34 struct command_context_s;
42 TARGET_DEBUG_RUNNING = 4,
45 extern char *target_state_strings[];
47 enum daemon_startup_mode
49 DAEMON_ATTACH, /* simply attach to the target */
50 DAEMON_RESET, /* reset target (behaviour defined by reset_mode */
53 enum target_reset_mode
55 RESET_RUN = 0, /* reset and let target run */
56 RESET_HALT = 1, /* reset and halt target out of reset */
57 RESET_INIT = 2, /* reset and halt target out of reset, then run init script */
58 RESET_RUN_AND_HALT = 3, /* reset and let target run, halt after n milliseconds */
59 RESET_RUN_AND_INIT = 4, /* reset and let target run, halt after n milliseconds, then run init script */
62 enum target_debug_reason
65 DBG_REASON_BREAKPOINT = 1,
66 DBG_REASON_WATCHPOINT = 2,
67 DBG_REASON_WPTANDBKPT = 3,
68 DBG_REASON_SINGLESTEP = 4,
69 DBG_REASON_NOTHALTED = 5
72 extern char *target_debug_reason_strings[];
76 TARGET_BIG_ENDIAN = 0, TARGET_LITTLE_ENDIAN = 1
79 extern char *target_endianess_strings[];
83 typedef struct working_area_s
89 struct working_area_s **user;
90 struct working_area_s *next;
93 typedef struct target_type_s
97 /* poll current target status */
98 enum target_state (*poll)(struct target_s *target);
99 /* architecture specific status reply */
100 int (*arch_state)(struct target_s *target, char *buf, int buf_size);
102 /* target execution control */
103 int (*halt)(struct target_s *target);
104 int (*resume)(struct target_s *target, int current, u32 address, int handle_breakpoints, int debug_execution);
105 int (*step)(struct target_s *target, int current, u32 address, int handle_breakpoints);
107 /* target reset control */
108 int (*assert_reset)(struct target_s *target);
109 int (*deassert_reset)(struct target_s *target);
110 int (*soft_reset_halt)(struct target_s *target);
112 /* target register access for gdb */
113 int (*get_gdb_reg_list)(struct target_s *target, struct reg_s **reg_list[], int *reg_list_size);
115 /* target memory access
116 * size: 1 = byte (8bit), 2 = half-word (16bit), 4 = word (32bit)
117 * count: number of items of <size>
119 int (*read_memory)(struct target_s *target, u32 address, u32 size, u32 count, u8 *buffer);
120 int (*write_memory)(struct target_s *target, u32 address, u32 size, u32 count, u8 *buffer);
122 /* write target memory in multiples of 4 byte, optimized for writing large quantities of data */
123 int (*bulk_write_memory)(struct target_s *target, u32 address, u32 count, u8 *buffer);
125 /* target break-/watchpoint control
126 * rw: 0 = write, 1 = read, 2 = access
128 int (*add_breakpoint)(struct target_s *target, u32 address, u32 length, enum breakpoint_type type);
129 int (*remove_breakpoint)(struct target_s *target, breakpoint_t *breakpoint);
130 int (*add_watchpoint)(struct target_s *target, u32 address, u32 length, enum watchpoint_rw rw);
131 int (*remove_watchpoint)(struct target_s *target, watchpoint_t *watchpoint);
133 /* target algorithm support */
134 int (*run_algorithm)(struct target_s *target, int num_mem_params, mem_param_t *mem_params, int num_reg_params, reg_param_t *reg_param, u32 entry_point, u32 exit_point, int timeout_ms, void *arch_info);
136 int (*register_commands)(struct command_context_s *cmd_ctx);
137 int (*target_command)(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct target_s *target);
138 int (*init_target)(struct command_context_s *cmd_ctx, struct target_s *target);
143 typedef struct target_s
145 target_type_t *type; /* target type definition (name, access functions) */
146 enum target_reset_mode reset_mode; /* what to do after a reset */
147 int run_and_halt_time; /* how long the target should run after a run_and_halt reset */
148 char *reset_script; /* script file to initialize the target after a reset */
149 char *post_halt_script; /* script file to execute after the target halted */
150 char *pre_resume_script; /* script file to execute before the target resumed */
151 u32 working_area; /* working area (initialized RAM) */
152 u32 working_area_size; /* size in bytes */
153 u32 backup_working_area; /* whether the content of the working area has to be preserved */
154 struct working_area_s *working_areas;/* list of allocated working areas */
155 enum target_debug_reason debug_reason; /* reason why the target entered debug state */
156 enum target_endianess endianness; /* target endianess */
157 enum target_state state; /* the current backend-state (running, halted, ...) */
158 struct reg_cache_s *reg_cache; /* the first register cache of the target (core regs) */
159 struct breakpoint_s *breakpoints; /* list of breakpoints */
160 struct watchpoint_s *watchpoints; /* list of watchpoints */
161 void *arch_info; /* architecture specific information */
162 struct target_s *next; /* next target in list */
167 TARGET_EVENT_HALTED, /* target entered debug state from normal execution or reset */
168 TARGET_EVENT_RESUMED, /* target resumed to normal execution */
169 TARGET_EVENT_RESET, /* target entered reset */
170 TARGET_EVENT_DEBUG_HALTED, /* target entered debug state, but was executing on behalf of the debugger */
171 TARGET_EVENT_DEBUG_RESUMED, /* target resumed to execute on behalf of the debugger */
174 typedef struct target_event_callback_s
176 int (*callback)(struct target_s *target, enum target_event event, void *priv);
178 struct target_event_callback_s *next;
179 } target_event_callback_t;
181 typedef struct target_timer_callback_s
183 int (*callback)(void *priv);
188 struct target_timer_callback_s *next;
189 } target_timer_callback_t;
191 extern int target_register_commands(struct command_context_s *cmd_ctx);
192 extern int target_register_user_commands(struct command_context_s *cmd_ctx);
193 extern int target_init(struct command_context_s *cmd_ctx);
194 extern int handle_target(void *priv);
196 extern int target_register_event_callback(int (*callback)(struct target_s *target, enum target_event event, void *priv), void *priv);
197 extern int target_unregister_event_callback(int (*callback)(struct target_s *target, enum target_event event, void *priv), void *priv);
198 extern int target_call_event_callbacks(target_t *target, enum target_event event);
200 extern int target_register_timer_callback(int (*callback)(void *priv), int time_ms, int periodic, void *priv);
201 extern int target_unregister_timer_callback(int (*callback)(void *priv), void *priv);
202 extern int target_call_timer_callbacks();
204 extern target_t* get_current_target(struct command_context_s *cmd_ctx);
205 extern int get_num_by_target(target_t *query_target);
206 extern target_t* get_target_by_num(int num);
208 extern int target_write_buffer(struct target_s *target, u32 address, u32 size, u8 *buffer);
209 extern int target_read_buffer(struct target_s *target, u32 address, u32 size, u8 *buffer);
211 extern int target_alloc_working_area(struct target_s *target, u32 size, working_area_t **area);
212 extern int target_free_working_area(struct target_s *target, working_area_t *area);
213 extern int target_free_all_working_areas(struct target_s *target);
215 extern target_t *targets;
217 extern target_event_callback_t *target_event_callbacks;
218 extern target_timer_callback_t *target_timer_callbacks;
220 extern u32 target_buffer_get_u32(target_t *target, u8 *buffer);
221 extern u16 target_buffer_get_u16(target_t *target, u8 *buffer);
222 extern void target_buffer_set_u32(target_t *target, u8 *buffer, u32 value);
223 extern void target_buffer_set_u16(target_t *target, u8 *buffer, u16 value);
225 void target_read_u32(struct target_s *target, u32 address, u32 *value);
226 void target_read_u16(struct target_s *target, u32 address, u16 *value);
227 void target_read_u8(struct target_s *target, u32 address, u8 *value);
228 void target_write_u32(struct target_s *target, u32 address, u32 value);
229 void target_write_u16(struct target_s *target, u32 address, u16 value);
230 void target_write_u8(struct target_s *target, u32 address, u8 value);
232 #define ERROR_TARGET_INVALID (-300)
233 #define ERROR_TARGET_INIT_FAILED (-301)
234 #define ERROR_TARGET_TIMEOUT (-302)
235 #define ERROR_TARGET_ALREADY_HALTED (-303)
236 #define ERROR_TARGET_NOT_HALTED (-304)
237 #define ERROR_TARGET_FAILURE (-305)
238 #define ERROR_TARGET_UNALIGNED_ACCESS (-306)
239 #define ERROR_TARGET_DATA_ABORT (-307)
240 #define ERROR_TARGET_RESOURCE_NOT_AVAILABLE (-308)
241 #define ERROR_TARGET_TRANSLATION_FAULT (-309)
243 #endif /* TARGET_H */