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 3 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, see <http://www.gnu.org/licenses/>. */
24 /* This structure describes how to resume a particular thread (or
25 all threads) based on the client's request. If thread is -1, then
26 this entry applies to all threads. These are generally passed around
27 as an array, and terminated by a thread == -1 entry. */
33 /* If non-zero, leave this thread stopped. */
36 /* If non-zero, we want to single-step. */
39 /* If non-zero, send this signal when we resume. */
45 /* Start a new process.
47 PROGRAM is a path to the program to execute.
48 ARGS is a standard NULL-terminated array of arguments,
49 to be passed to the inferior as ``argv''.
51 Returns the new PID on success, -1 on failure. Registers the new
52 process with the process list. */
54 int (*create_inferior) (char *program, char **args);
56 /* Attach to a running process.
58 PID is the process ID to attach to, specified by the user
61 Returns -1 if attaching is unsupported, 0 on success, and calls
64 int (*attach) (unsigned long pid);
66 /* Kill all inferiors. */
70 /* Detach from all inferiors.
71 Return -1 on failure, and 0 on success. */
75 /* Wait for inferiors to end. */
79 /* Return 1 iff the thread with process ID PID is alive. */
81 int (*thread_alive) (unsigned long pid);
83 /* Resume the inferior process. */
85 void (*resume) (struct thread_resume *resume_info);
87 /* Wait for the inferior process to change state.
89 STATUS will be filled in with a response code to send to GDB.
91 Returns the signal which caused the process to stop, in the
92 remote protocol numbering (e.g. TARGET_SIGNAL_STOP), or the
93 exit code as an integer if *STATUS is 'W'. */
95 unsigned char (*wait) (char *status);
97 /* Fetch registers from the inferior process.
99 If REGNO is -1, fetch all registers; otherwise, fetch at least REGNO. */
101 void (*fetch_registers) (int regno);
103 /* Store registers to the inferior process.
105 If REGNO is -1, store all registers; otherwise, store at least REGNO. */
107 void (*store_registers) (int regno);
109 /* Read memory from the inferior process. This should generally be
110 called through read_inferior_memory, which handles breakpoint shadowing.
112 Read LEN bytes at MEMADDR into a buffer at MYADDR.
114 Returns 0 on success and errno on failure. */
116 int (*read_memory) (CORE_ADDR memaddr, unsigned char *myaddr, int len);
118 /* Write memory to the inferior process. This should generally be
119 called through write_inferior_memory, which handles breakpoint shadowing.
121 Write LEN bytes from the buffer at MYADDR to MEMADDR.
123 Returns 0 on success and errno on failure. */
125 int (*write_memory) (CORE_ADDR memaddr, const unsigned char *myaddr,
128 /* Query GDB for the values of any symbols we're interested in.
129 This function is called whenever we receive a "qSymbols::"
130 query, which corresponds to every time more symbols (might)
131 become available. NULL if we aren't interested in any
134 void (*look_up_symbols) (void);
136 /* Send an interrupt request to the inferior process,
137 however is appropriate. */
139 void (*request_interrupt) (void);
141 /* Read auxiliary vector data from the inferior process.
143 Read LEN bytes at OFFSET into a buffer at MYADDR. */
145 int (*read_auxv) (CORE_ADDR offset, unsigned char *myaddr,
148 /* Insert and remove a hardware watchpoint.
149 Returns 0 on success, -1 on failure and 1 on unsupported.
150 The type is coded as follows:
153 4 = access watchpoint
156 int (*insert_watchpoint) (char type, CORE_ADDR addr, int len);
157 int (*remove_watchpoint) (char type, CORE_ADDR addr, int len);
159 /* Returns 1 if target was stopped due to a watchpoint hit, 0 otherwise. */
161 int (*stopped_by_watchpoint) (void);
163 /* Returns the address associated with the watchpoint that hit, if any;
164 returns 0 otherwise. */
166 CORE_ADDR (*stopped_data_address) (void);
168 /* Reports the text, data offsets of the executable. This is
169 needed for uclinux where the executable is relocated during load
172 int (*read_offsets) (CORE_ADDR *text, CORE_ADDR *data);
174 /* Fetch the address associated with a specific thread local storage
175 area, determined by the specified THREAD, OFFSET, and LOAD_MODULE.
176 Stores it in *ADDRESS and returns zero on success; otherwise returns
177 an error code. A return value of -1 means this system does not
178 support the operation. */
180 int (*get_tls_address) (struct thread_info *thread, CORE_ADDR offset,
181 CORE_ADDR load_module, CORE_ADDR *address);
183 /* Return a string identifying the current architecture, or NULL if
184 this operation is not supported. */
185 const char *(*arch_string) (void);
187 /* Read/Write from/to spufs using qXfer packets. */
188 int (*qxfer_spu) (const char *annex, unsigned char *readbuf,
189 unsigned const char *writebuf, CORE_ADDR offset, int len);
192 extern struct target_ops *the_target;
194 void set_target_ops (struct target_ops *);
196 #define create_inferior(program, args) \
197 (*the_target->create_inferior) (program, args)
199 #define myattach(pid) \
200 (*the_target->attach) (pid)
202 #define kill_inferior() \
203 (*the_target->kill) ()
205 #define detach_inferior() \
206 (*the_target->detach) ()
208 #define mythread_alive(pid) \
209 (*the_target->thread_alive) (pid)
211 #define fetch_inferior_registers(regno) \
212 (*the_target->fetch_registers) (regno)
214 #define store_inferior_registers(regno) \
215 (*the_target->store_registers) (regno)
217 #define join_inferior() \
218 (*the_target->join) ()
220 unsigned char mywait (char *statusp, int connected_wait);
222 int read_inferior_memory (CORE_ADDR memaddr, unsigned char *myaddr, int len);
224 int write_inferior_memory (CORE_ADDR memaddr, const unsigned char *myaddr,
227 void set_desired_inferior (int id);
229 #endif /* TARGET_H */