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/***************************************************************************
* Copyright (C) 2005 by Dominic Rath *
* Dominic.Rath@gmx.de *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#ifndef TARGET_H
#define TARGET_H
#include "register.h"
#include "breakpoints.h"
#include "algorithm.h"
#include "command.h"
#include "types.h"
#include <sys/time.h>
#include <time.h>
struct reg_s;
struct command_context_s;
enum target_state
{
TARGET_UNKNOWN = 0,
TARGET_RUNNING = 1,
TARGET_HALTED = 2,
TARGET_RESET = 3,
TARGET_DEBUG_RUNNING = 4,
};
extern char *target_state_strings[];
enum daemon_startup_mode
{
DAEMON_ATTACH, /* simply attach to the target */
DAEMON_RESET, /* reset target (behaviour defined by reset_mode */
};
enum target_reset_mode
{
RESET_RUN = 0, /* reset and let target run */
RESET_HALT = 1, /* reset and halt target out of reset */
RESET_INIT = 2, /* reset and halt target out of reset, then run init script */
RESET_RUN_AND_HALT = 3, /* reset and let target run, halt after n milliseconds */
RESET_RUN_AND_INIT = 4, /* reset and let target run, halt after n milliseconds, then run init script */
};
enum target_debug_reason
{
DBG_REASON_DBGRQ = 0,
DBG_REASON_BREAKPOINT = 1,
DBG_REASON_WATCHPOINT = 2,
DBG_REASON_WPTANDBKPT = 3,
DBG_REASON_SINGLESTEP = 4,
DBG_REASON_NOTHALTED = 5
};
extern char *target_debug_reason_strings[];
enum target_endianess
{
TARGET_BIG_ENDIAN = 0, TARGET_LITTLE_ENDIAN = 1
};
extern char *target_endianess_strings[];
struct target_s;
typedef struct working_area_s
{
u32 address;
u32 size;
int free;
u8 *backup;
struct working_area_s **user;
struct working_area_s *next;
} working_area_t;
typedef struct target_type_s
{
char *name;
/* poll current target status */
enum target_state (*poll)(struct target_s *target);
/* architecture specific status reply */
int (*arch_state)(struct target_s *target, char *buf, int buf_size);
/* target execution control */
int (*halt)(struct target_s *target);
int (*resume)(struct target_s *target, int current, u32 address, int handle_breakpoints, int debug_execution);
int (*step)(struct target_s *target, int current, u32 address, int handle_breakpoints);
/* target reset control */
int (*assert_reset)(struct target_s *target);
int (*deassert_reset)(struct target_s *target);
int (*soft_reset_halt)(struct target_s *target);
/* target register access for gdb */
int (*get_gdb_reg_list)(struct target_s *target, struct reg_s **reg_list[], int *reg_list_size);
/* target memory access
* size: 1 = byte (8bit), 2 = half-word (16bit), 4 = word (32bit)
* count: number of items of <size>
*/
int (*read_memory)(struct target_s *target, u32 address, u32 size, u32 count, u8 *buffer);
int (*write_memory)(struct target_s *target, u32 address, u32 size, u32 count, u8 *buffer);
/* write target memory in multiples of 4 byte, optimized for writing large quantities of data */
int (*bulk_write_memory)(struct target_s *target, u32 address, u32 count, u8 *buffer);
/* target break-/watchpoint control
* rw: 0 = write, 1 = read, 2 = access
*/
int (*add_breakpoint)(struct target_s *target, breakpoint_t *breakpoint);
int (*remove_breakpoint)(struct target_s *target, breakpoint_t *breakpoint);
int (*add_watchpoint)(struct target_s *target, watchpoint_t *watchpoint);
int (*remove_watchpoint)(struct target_s *target, watchpoint_t *watchpoint);
/* target algorithm support */
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);
int (*register_commands)(struct command_context_s *cmd_ctx);
int (*target_command)(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct target_s *target);
int (*init_target)(struct command_context_s *cmd_ctx, struct target_s *target);
int (*quit)(void);
} target_type_t;
typedef struct target_s
{
target_type_t *type; /* target type definition (name, access functions) */
enum target_reset_mode reset_mode; /* what to do after a reset */
int run_and_halt_time; /* how long the target should run after a run_and_halt reset */
char *reset_script; /* script file to initialize the target after a reset */
char *post_halt_script; /* script file to execute after the target halted */
char *pre_resume_script; /* script file to execute before the target resumed */
u32 working_area; /* working area (initialized RAM) */
u32 working_area_size; /* size in bytes */
u32 backup_working_area; /* whether the content of the working area has to be preserved */
struct working_area_s *working_areas;/* list of allocated working areas */
enum target_debug_reason debug_reason; /* reason why the target entered debug state */
enum target_endianess endianness; /* target endianess */
enum target_state state; /* the current backend-state (running, halted, ...) */
struct reg_cache_s *reg_cache; /* the first register cache of the target (core regs) */
struct breakpoint_s *breakpoints; /* list of breakpoints */
struct watchpoint_s *watchpoints; /* list of watchpoints */
void *arch_info; /* architecture specific information */
struct target_s *next; /* next target in list */
} target_t;
enum target_event
{
TARGET_EVENT_HALTED, /* target entered debug state from normal execution or reset */
TARGET_EVENT_RESUMED, /* target resumed to normal execution */
TARGET_EVENT_RESET, /* target entered reset */
TARGET_EVENT_DEBUG_HALTED, /* target entered debug state, but was executing on behalf of the debugger */
TARGET_EVENT_DEBUG_RESUMED, /* target resumed to execute on behalf of the debugger */
};
typedef struct target_event_callback_s
{
int (*callback)(struct target_s *target, enum target_event event, void *priv);
void *priv;
struct target_event_callback_s *next;
} target_event_callback_t;
typedef struct target_timer_callback_s
{
int (*callback)(void *priv);
int time_ms;
int periodic;
struct timeval when;
void *priv;
struct target_timer_callback_s *next;
} target_timer_callback_t;
extern int target_register_commands(struct command_context_s *cmd_ctx);
extern int target_register_user_commands(struct command_context_s *cmd_ctx);
extern int target_init(struct command_context_s *cmd_ctx);
extern int handle_target(void *priv);
extern int target_register_event_callback(int (*callback)(struct target_s *target, enum target_event event, void *priv), void *priv);
extern int target_unregister_event_callback(int (*callback)(struct target_s *target, enum target_event event, void *priv), void *priv);
extern int target_call_event_callbacks(target_t *target, enum target_event event);
extern int target_register_timer_callback(int (*callback)(void *priv), int time_ms, int periodic, void *priv);
extern int target_unregister_timer_callback(int (*callback)(void *priv), void *priv);
extern int target_call_timer_callbacks();
extern target_t* get_current_target(struct command_context_s *cmd_ctx);
extern int get_num_by_target(target_t *query_target);
extern target_t* get_target_by_num(int num);
extern int target_write_buffer(struct target_s *target, u32 address, u32 size, u8 *buffer);
extern int target_read_buffer(struct target_s *target, u32 address, u32 size, u8 *buffer);
extern int target_alloc_working_area(struct target_s *target, u32 size, working_area_t **area);
extern int target_free_working_area(struct target_s *target, working_area_t *area);
extern int target_free_all_working_areas(struct target_s *target);
extern target_t *targets;
extern target_event_callback_t *target_event_callbacks;
extern target_timer_callback_t *target_timer_callbacks;
extern u32 target_buffer_get_u32(target_t *target, u8 *buffer);
extern u16 target_buffer_get_u16(target_t *target, u8 *buffer);
extern void target_buffer_set_u32(target_t *target, u8 *buffer, u32 value);
extern void target_buffer_set_u16(target_t *target, u8 *buffer, u16 value);
void target_read_u32(struct target_s *target, u32 address, u32 *value);
void target_read_u16(struct target_s *target, u32 address, u16 *value);
void target_read_u8(struct target_s *target, u32 address, u8 *value);
void target_write_u32(struct target_s *target, u32 address, u32 value);
void target_write_u16(struct target_s *target, u32 address, u16 value);
void target_write_u8(struct target_s *target, u32 address, u8 value);
#define ERROR_TARGET_INVALID (-300)
#define ERROR_TARGET_INIT_FAILED (-301)
#define ERROR_TARGET_TIMEOUT (-302)
#define ERROR_TARGET_ALREADY_HALTED (-303)
#define ERROR_TARGET_NOT_HALTED (-304)
#define ERROR_TARGET_FAILURE (-305)
#define ERROR_TARGET_UNALIGNED_ACCESS (-306)
#define ERROR_TARGET_DATA_ABORT (-307)
#define ERROR_TARGET_RESOURCE_NOT_AVAILABLE (-308)
#define ERROR_TARGET_TRANSLATION_FAULT (-309)
#endif /* TARGET_H */
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