1 /* Target operations for the remote server for GDB.
2 Copyright (C) 2002, 2003, 2004, 2005, 2007 Free Software Foundation, Inc.
4 Contributed by MontaVista Software.
6 This file is part of GDB.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street, Fifth Floor,
21 Boston, MA 02110-1301, USA. */
26 /* This structure describes how to resume a particular thread (or
27 all threads) based on the client's request. If thread is -1, then
28 this entry applies to all threads. These are generally passed around
29 as an array, and terminated by a thread == -1 entry. */
35 /* If non-zero, leave this thread stopped. */
38 /* If non-zero, we want to single-step. */
41 /* If non-zero, send this signal when we resume. */
47 /* Start a new process.
49 PROGRAM is a path to the program to execute.
50 ARGS is a standard NULL-terminated array of arguments,
51 to be passed to the inferior as ``argv''.
53 Returns the new PID on success, -1 on failure. Registers the new
54 process with the process list. */
56 int (*create_inferior
) (char *program
, char **args
);
58 /* Attach to a running process.
60 PID is the process ID to attach to, specified by the user
63 Returns -1 if attaching is unsupported, 0 on success, and calls
66 int (*attach
) (unsigned long pid
);
68 /* Kill all inferiors. */
72 /* Detach from all inferiors.
73 Return -1 on failure, and 0 on success. */
77 /* Wait for inferiors to end. */
81 /* Return 1 iff the thread with process ID PID is alive. */
83 int (*thread_alive
) (unsigned long pid
);
85 /* Resume the inferior process. */
87 void (*resume
) (struct thread_resume
*resume_info
);
89 /* Wait for the inferior process to change state.
91 STATUS will be filled in with a response code to send to GDB.
93 Returns the signal which caused the process to stop, in the
94 remote protocol numbering (e.g. TARGET_SIGNAL_STOP), or the
95 exit code as an integer if *STATUS is 'W'. */
97 unsigned char (*wait
) (char *status
);
99 /* Fetch registers from the inferior process.
101 If REGNO is -1, fetch all registers; otherwise, fetch at least REGNO. */
103 void (*fetch_registers
) (int regno
);
105 /* Store registers to the inferior process.
107 If REGNO is -1, store all registers; otherwise, store at least REGNO. */
109 void (*store_registers
) (int regno
);
111 /* Read memory from the inferior process. This should generally be
112 called through read_inferior_memory, which handles breakpoint shadowing.
114 Read LEN bytes at MEMADDR into a buffer at MYADDR.
116 Returns 0 on success and errno on failure. */
118 int (*read_memory
) (CORE_ADDR memaddr
, unsigned char *myaddr
, int len
);
120 /* Write memory to the inferior process. This should generally be
121 called through write_inferior_memory, which handles breakpoint shadowing.
123 Write LEN bytes from the buffer at MYADDR to MEMADDR.
125 Returns 0 on success and errno on failure. */
127 int (*write_memory
) (CORE_ADDR memaddr
, const unsigned char *myaddr
,
130 /* Query GDB for the values of any symbols we're interested in.
131 This function is called whenever we receive a "qSymbols::"
132 query, which corresponds to every time more symbols (might)
133 become available. NULL if we aren't interested in any
136 void (*look_up_symbols
) (void);
138 /* Send an interrupt request to the inferior process,
139 however is appropriate. */
141 void (*request_interrupt
) (void);
143 /* Read auxiliary vector data from the inferior process.
145 Read LEN bytes at OFFSET into a buffer at MYADDR. */
147 int (*read_auxv
) (CORE_ADDR offset
, unsigned char *myaddr
,
150 /* Insert and remove a hardware watchpoint.
151 Returns 0 on success, -1 on failure and 1 on unsupported.
152 The type is coded as follows:
155 4 = access watchpoint
158 int (*insert_watchpoint
) (char type
, CORE_ADDR addr
, int len
);
159 int (*remove_watchpoint
) (char type
, CORE_ADDR addr
, int len
);
161 /* Returns 1 if target was stopped due to a watchpoint hit, 0 otherwise. */
163 int (*stopped_by_watchpoint
) (void);
165 /* Returns the address associated with the watchpoint that hit, if any;
166 returns 0 otherwise. */
168 CORE_ADDR (*stopped_data_address
) (void);
170 /* Reports the text, data offsets of the executable. This is
171 needed for uclinux where the executable is relocated during load
174 int (*read_offsets
) (CORE_ADDR
*text
, CORE_ADDR
*data
);
176 /* Fetch the address associated with a specific thread local storage
177 area, determined by the specified THREAD, OFFSET, and LOAD_MODULE.
178 Stores it in *ADDRESS and returns zero on success; otherwise returns
179 an error code. A return value of -1 means this system does not
180 support the operation. */
182 int (*get_tls_address
) (struct thread_info
*thread
, CORE_ADDR offset
,
183 CORE_ADDR load_module
, CORE_ADDR
*address
);
185 /* Return a string identifying the current architecture, or NULL if
186 this operation is not supported. */
187 const char *(*arch_string
) (void);
189 /* Read/Write from/to spufs using qXfer packets. */
190 int (*qxfer_spu
) (const char *annex
, unsigned char *readbuf
,
191 unsigned const char *writebuf
, CORE_ADDR offset
, int len
);
194 extern struct target_ops
*the_target
;
196 void set_target_ops (struct target_ops
*);
198 #define create_inferior(program, args) \
199 (*the_target->create_inferior) (program, args)
201 #define myattach(pid) \
202 (*the_target->attach) (pid)
204 #define kill_inferior() \
205 (*the_target->kill) ()
207 #define detach_inferior() \
208 (*the_target->detach) ()
210 #define mythread_alive(pid) \
211 (*the_target->thread_alive) (pid)
213 #define fetch_inferior_registers(regno) \
214 (*the_target->fetch_registers) (regno)
216 #define store_inferior_registers(regno) \
217 (*the_target->store_registers) (regno)
219 #define join_inferior() \
220 (*the_target->join) ()
222 unsigned char mywait (char *statusp
, int connected_wait
);
224 int read_inferior_memory (CORE_ADDR memaddr
, unsigned char *myaddr
, int len
);
226 int write_inferior_memory (CORE_ADDR memaddr
, const unsigned char *myaddr
,
229 void set_desired_inferior (int id
);
231 #endif /* TARGET_H */
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