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 int (*attach
) (unsigned long pid
);
65 /* Kill all inferiors. */
69 /* Detach from all inferiors. */
71 void (*detach
) (void);
73 /* Return 1 iff the thread with process ID PID is alive. */
75 int (*thread_alive
) (unsigned long pid
);
77 /* Resume the inferior process. */
79 void (*resume
) (struct thread_resume
*resume_info
);
81 /* Wait for the inferior process to change state.
83 STATUS will be filled in with a response code to send to GDB.
85 Returns the signal which caused the process to stop, in the
86 remote protocol numbering (e.g. TARGET_SIGNAL_STOP), or the
87 exit code as an integer if *STATUS is 'W'. */
89 unsigned char (*wait
) (char *status
);
91 /* Fetch registers from the inferior process.
93 If REGNO is -1, fetch all registers; otherwise, fetch at least REGNO. */
95 void (*fetch_registers
) (int regno
);
97 /* Store registers to the inferior process.
99 If REGNO is -1, store all registers; otherwise, store at least REGNO. */
101 void (*store_registers
) (int regno
);
103 /* Read memory from the inferior process. This should generally be
104 called through read_inferior_memory, which handles breakpoint shadowing.
106 Read LEN bytes at MEMADDR into a buffer at MYADDR.
108 Returns 0 on success and errno on failure. */
110 int (*read_memory
) (CORE_ADDR memaddr
, unsigned char *myaddr
, int len
);
112 /* Write memory to the inferior process. This should generally be
113 called through write_inferior_memory, which handles breakpoint shadowing.
115 Write LEN bytes from the buffer at MYADDR to MEMADDR.
117 Returns 0 on success and errno on failure. */
119 int (*write_memory
) (CORE_ADDR memaddr
, const unsigned char *myaddr
,
122 /* Query GDB for the values of any symbols we're interested in.
123 This function is called whenever we receive a "qSymbols::"
124 query, which corresponds to every time more symbols (might)
125 become available. NULL if we aren't interested in any
128 void (*look_up_symbols
) (void);
130 /* Send an interrupt request to the inferior process,
131 however is appropriate. */
133 void (*request_interrupt
) (void);
135 /* Read auxiliary vector data from the inferior process.
137 Read LEN bytes at OFFSET into a buffer at MYADDR. */
139 int (*read_auxv
) (CORE_ADDR offset
, unsigned char *myaddr
,
142 /* Insert and remove a hardware watchpoint.
143 Returns 0 on success, -1 on failure and 1 on unsupported.
144 The type is coded as follows:
147 4 = access watchpoint
150 int (*insert_watchpoint
) (char type
, CORE_ADDR addr
, int len
);
151 int (*remove_watchpoint
) (char type
, CORE_ADDR addr
, int len
);
153 /* Returns 1 if target was stopped due to a watchpoint hit, 0 otherwise. */
155 int (*stopped_by_watchpoint
) (void);
157 /* Returns the address associated with the watchpoint that hit, if any;
158 returns 0 otherwise. */
160 CORE_ADDR (*stopped_data_address
) (void);
162 /* Reports the text, data offsets of the executable. This is
163 needed for uclinux where the executable is relocated during load
166 int (*read_offsets
) (CORE_ADDR
*text
, CORE_ADDR
*data
);
168 /* Fetch the address associated with a specific thread local storage
169 area, determined by the specified THREAD, OFFSET, and LOAD_MODULE.
170 Stores it in *ADDRESS and returns zero on success; otherwise returns
171 an error code. A return value of -1 means this system does not
172 support the operation. */
174 int (*get_tls_address
) (struct thread_info
*thread
, CORE_ADDR offset
,
175 CORE_ADDR load_module
, CORE_ADDR
*address
);
177 /* Return a string identifying the current architecture, or NULL if
178 this operation is not supported. */
179 const char *(*arch_string
) (void);
182 extern struct target_ops
*the_target
;
184 void set_target_ops (struct target_ops
*);
186 #define create_inferior(program, args) \
187 (*the_target->create_inferior) (program, args)
189 #define myattach(pid) \
190 (*the_target->attach) (pid)
192 #define kill_inferior() \
193 (*the_target->kill) ()
195 #define detach_inferior() \
196 (*the_target->detach) ()
198 #define mythread_alive(pid) \
199 (*the_target->thread_alive) (pid)
201 #define fetch_inferior_registers(regno) \
202 (*the_target->fetch_registers) (regno)
204 #define store_inferior_registers(regno) \
205 (*the_target->store_registers) (regno)
207 unsigned char mywait (char *statusp
, int connected_wait
);
209 int read_inferior_memory (CORE_ADDR memaddr
, unsigned char *myaddr
, int len
);
211 int write_inferior_memory (CORE_ADDR memaddr
, const unsigned char *myaddr
,
214 void set_desired_inferior (int id
);
216 #endif /* TARGET_H */
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