1 /* Target operations for the remote server for GDB.
2 Copyright (C) 2002, 2003, 2004, 2005, 2007, 2008
3 Free Software Foundation, Inc.
5 Contributed by MontaVista Software.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
25 /* This structure describes how to resume a particular thread (or
26 all threads) based on the client's request. If thread is -1, then
27 this entry applies to all threads. These are generally passed around
28 as an array, and terminated by a thread == -1 entry. */
34 /* If non-zero, leave this thread stopped. */
37 /* If non-zero, we want to single-step. */
40 /* If non-zero, send this signal when we resume. */
46 /* Start a new process.
48 PROGRAM is a path to the program to execute.
49 ARGS is a standard NULL-terminated array of arguments,
50 to be passed to the inferior as ``argv''.
52 Returns the new PID on success, -1 on failure. Registers the new
53 process with the process list. */
55 int (*create_inferior
) (char *program
, char **args
);
57 /* Attach to a running process.
59 PID is the process ID to attach to, specified by the user
62 Returns -1 if attaching is unsupported, 0 on success, and calls
65 int (*attach
) (unsigned long pid
);
67 /* Kill all inferiors. */
71 /* Detach from all inferiors.
72 Return -1 on failure, and 0 on success. */
76 /* Wait for inferiors to end. */
80 /* Return 1 iff the thread with process ID PID is alive. */
82 int (*thread_alive
) (unsigned long pid
);
84 /* Resume the inferior process. */
86 void (*resume
) (struct thread_resume
*resume_info
);
88 /* Wait for the inferior process to change state.
90 STATUS will be filled in with a response code to send to GDB.
92 Returns the signal which caused the process to stop, in the
93 remote protocol numbering (e.g. TARGET_SIGNAL_STOP), or the
94 exit code as an integer if *STATUS is 'W'. */
96 unsigned char (*wait
) (char *status
);
98 /* Fetch registers from the inferior process.
100 If REGNO is -1, fetch all registers; otherwise, fetch at least REGNO. */
102 void (*fetch_registers
) (int regno
);
104 /* Store registers to the inferior process.
106 If REGNO is -1, store all registers; otherwise, store at least REGNO. */
108 void (*store_registers
) (int regno
);
110 /* Read memory from the inferior process. This should generally be
111 called through read_inferior_memory, which handles breakpoint shadowing.
113 Read LEN bytes at MEMADDR into a buffer at MYADDR.
115 Returns 0 on success and errno on failure. */
117 int (*read_memory
) (CORE_ADDR memaddr
, unsigned char *myaddr
, int len
);
119 /* Write memory to the inferior process. This should generally be
120 called through write_inferior_memory, which handles breakpoint shadowing.
122 Write LEN bytes from the buffer at MYADDR to MEMADDR.
124 Returns 0 on success and errno on failure. */
126 int (*write_memory
) (CORE_ADDR memaddr
, const unsigned char *myaddr
,
129 /* Query GDB for the values of any symbols we're interested in.
130 This function is called whenever we receive a "qSymbols::"
131 query, which corresponds to every time more symbols (might)
132 become available. NULL if we aren't interested in any
135 void (*look_up_symbols
) (void);
137 /* Send an interrupt request to the inferior process,
138 however is appropriate. */
140 void (*request_interrupt
) (void);
142 /* Read auxiliary vector data from the inferior process.
144 Read LEN bytes at OFFSET into a buffer at MYADDR. */
146 int (*read_auxv
) (CORE_ADDR offset
, unsigned char *myaddr
,
149 /* Insert and remove a hardware watchpoint.
150 Returns 0 on success, -1 on failure and 1 on unsupported.
151 The type is coded as follows:
154 4 = access watchpoint
157 int (*insert_watchpoint
) (char type
, CORE_ADDR addr
, int len
);
158 int (*remove_watchpoint
) (char type
, CORE_ADDR addr
, int len
);
160 /* Returns 1 if target was stopped due to a watchpoint hit, 0 otherwise. */
162 int (*stopped_by_watchpoint
) (void);
164 /* Returns the address associated with the watchpoint that hit, if any;
165 returns 0 otherwise. */
167 CORE_ADDR (*stopped_data_address
) (void);
169 /* Reports the text, data offsets of the executable. This is
170 needed for uclinux where the executable is relocated during load
173 int (*read_offsets
) (CORE_ADDR
*text
, CORE_ADDR
*data
);
175 /* Fetch the address associated with a specific thread local storage
176 area, determined by the specified THREAD, OFFSET, and LOAD_MODULE.
177 Stores it in *ADDRESS and returns zero on success; otherwise returns
178 an error code. A return value of -1 means this system does not
179 support the operation. */
181 int (*get_tls_address
) (struct thread_info
*thread
, CORE_ADDR offset
,
182 CORE_ADDR load_module
, CORE_ADDR
*address
);
184 /* Return a string identifying the current architecture, or NULL if
185 this operation is not supported. */
186 const char *(*arch_string
) (void);
188 /* Read/Write from/to spufs using qXfer packets. */
189 int (*qxfer_spu
) (const char *annex
, unsigned char *readbuf
,
190 unsigned const char *writebuf
, CORE_ADDR offset
, int len
);
193 extern struct target_ops
*the_target
;
195 void set_target_ops (struct target_ops
*);
197 #define create_inferior(program, args) \
198 (*the_target->create_inferior) (program, args)
200 #define myattach(pid) \
201 (*the_target->attach) (pid)
203 #define kill_inferior() \
204 (*the_target->kill) ()
206 #define detach_inferior() \
207 (*the_target->detach) ()
209 #define mythread_alive(pid) \
210 (*the_target->thread_alive) (pid)
212 #define fetch_inferior_registers(regno) \
213 (*the_target->fetch_registers) (regno)
215 #define store_inferior_registers(regno) \
216 (*the_target->store_registers) (regno)
218 #define join_inferior() \
219 (*the_target->join) ()
221 unsigned char mywait (char *statusp
, int connected_wait
);
223 int read_inferior_memory (CORE_ADDR memaddr
, unsigned char *myaddr
, int len
);
225 int write_inferior_memory (CORE_ADDR memaddr
, const unsigned char *myaddr
,
228 void set_desired_inferior (int id
);
230 #endif /* TARGET_H */
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