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 #define ERROR_TARGET_INVALID (-300)
221 #define ERROR_TARGET_INIT_FAILED (-301)
222 #define ERROR_TARGET_TIMEOUT (-302)
223 #define ERROR_TARGET_ALREADY_HALTED (-303)
224 #define ERROR_TARGET_NOT_HALTED (-304)
225 #define ERROR_TARGET_FAILURE (-305)
226 #define ERROR_TARGET_UNALIGNED_ACCESS (-306)
227 #define ERROR_TARGET_DATA_ABORT (-307)
228 #define ERROR_TARGET_RESOURCE_NOT_AVAILABLE (-308)
229 #define ERROR_TARGET_TRANSLATION_FAULT (-309)
231 #endif /* TARGET_H */
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