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/* Target operations for the remote server for GDB.
Copyright 2002
Free Software Foundation, Inc.
Contributed by MontaVista Software.
This file is part of GDB.
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
/* This structure describes how to resume a particular thread (or
all threads) based on the client's request. If thread is -1, then
this entry applies to all threads. These are generally passed around
as an array, and terminated by a thread == -1 entry. */
struct thread_resume
{
int thread;
/* If non-zero, leave this thread stopped. */
int leave_stopped;
/* If non-zero, we want to single-step. */
int step;
/* If non-zero, send this signal when we resume. */
int sig;
};
struct target_ops
{
/* Start a new process.
PROGRAM is a path to the program to execute.
ARGS is a standard NULL-terminated array of arguments,
to be passed to the inferior as ``argv''.
Returns the new PID on success, -1 on failure. Registers the new
process with the process list. */
int (*create_inferior) (char *program, char **args);
/* Attach to a running process.
PID is the process ID to attach to, specified by the user
or a higher layer. */
int (*attach) (int pid);
/* Kill all inferiors. */
void (*kill) (void);
/* Detach from all inferiors. */
void (*detach) (void);
/* Return 1 iff the thread with process ID PID is alive. */
int (*thread_alive) (int pid);
/* Resume the inferior process. */
void (*resume) (struct thread_resume *resume_info);
/* Wait for the inferior process to change state.
STATUSP will be filled in with a response code to send to GDB.
Returns the signal which caused the process to stop. */
unsigned char (*wait) (char *status);
/* Fetch registers from the inferior process.
If REGNO is -1, fetch all registers; otherwise, fetch at least REGNO. */
void (*fetch_registers) (int regno);
/* Store registers to the inferior process.
If REGNO is -1, store all registers; otherwise, store at least REGNO. */
void (*store_registers) (int regno);
/* Read memory from the inferior process. This should generally be
called through read_inferior_memory, which handles breakpoint shadowing.
Read LEN bytes at MEMADDR into a buffer at MYADDR. */
void (*read_memory) (CORE_ADDR memaddr, char *myaddr, int len);
/* Write memory to the inferior process. This should generally be
called through write_inferior_memory, which handles breakpoint shadowing.
Write LEN bytes from the buffer at MYADDR to MEMADDR.
Returns 0 on success and errno on failure. */
int (*write_memory) (CORE_ADDR memaddr, const char *myaddr, int len);
/* Query GDB for the values of any symbols we're interested in.
This function is called whenever we receive a "qSymbols::"
query, which corresponds to every time more symbols (might)
become available. NULL if we aren't interested in any
symbols. */
void (*look_up_symbols) (void);
/* Send a signal to the inferior process, however is appropriate. */
void (*send_signal) (int);
/* Read auxiliary vector data from the inferior process.
Read LEN bytes at OFFSET into a buffer at MYADDR. */
int (*read_auxv) (CORE_ADDR offset, char *myaddr, unsigned int len);
};
extern struct target_ops *the_target;
void set_target_ops (struct target_ops *);
#define create_inferior(program, args) \
(*the_target->create_inferior) (program, args)
#define myattach(pid) \
(*the_target->attach) (pid)
#define kill_inferior() \
(*the_target->kill) ()
#define detach_inferior() \
(*the_target->detach) ()
#define mythread_alive(pid) \
(*the_target->thread_alive) (pid)
#define fetch_inferior_registers(regno) \
(*the_target->fetch_registers) (regno)
#define store_inferior_registers(regno) \
(*the_target->store_registers) (regno)
unsigned char mywait (char *statusp, int connected_wait);
void read_inferior_memory (CORE_ADDR memaddr, char *myaddr, int len);
int write_inferior_memory (CORE_ADDR memaddr, const char *myaddr, int len);
void set_desired_inferior (int id);
#endif /* TARGET_H */
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