219 lines
6.6 KiB
C
219 lines
6.6 KiB
C
/* Target operations for the remote server for GDB.
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Copyright (C) 2002, 2003, 2004, 2005, 2007 Free Software Foundation, Inc.
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Contributed by MontaVista Software.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA. */
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#ifndef TARGET_H
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#define TARGET_H
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/* This structure describes how to resume a particular thread (or
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all threads) based on the client's request. If thread is -1, then
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this entry applies to all threads. These are generally passed around
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as an array, and terminated by a thread == -1 entry. */
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struct thread_resume
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{
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unsigned long thread;
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/* If non-zero, leave this thread stopped. */
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int leave_stopped;
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/* If non-zero, we want to single-step. */
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int step;
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/* If non-zero, send this signal when we resume. */
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int sig;
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};
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struct target_ops
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{
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/* Start a new process.
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PROGRAM is a path to the program to execute.
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ARGS is a standard NULL-terminated array of arguments,
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to be passed to the inferior as ``argv''.
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Returns the new PID on success, -1 on failure. Registers the new
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process with the process list. */
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int (*create_inferior) (char *program, char **args);
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/* Attach to a running process.
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PID is the process ID to attach to, specified by the user
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or a higher layer.
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Returns -1 if attaching is unsupported, 0 on success, and calls
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error() otherwise. */
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int (*attach) (unsigned long pid);
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/* Kill all inferiors. */
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void (*kill) (void);
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/* Detach from all inferiors. */
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void (*detach) (void);
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/* Return 1 iff the thread with process ID PID is alive. */
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int (*thread_alive) (unsigned long pid);
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/* Resume the inferior process. */
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void (*resume) (struct thread_resume *resume_info);
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/* Wait for the inferior process to change state.
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STATUS will be filled in with a response code to send to GDB.
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Returns the signal which caused the process to stop, in the
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remote protocol numbering (e.g. TARGET_SIGNAL_STOP), or the
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exit code as an integer if *STATUS is 'W'. */
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unsigned char (*wait) (char *status);
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/* Fetch registers from the inferior process.
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If REGNO is -1, fetch all registers; otherwise, fetch at least REGNO. */
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void (*fetch_registers) (int regno);
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/* Store registers to the inferior process.
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If REGNO is -1, store all registers; otherwise, store at least REGNO. */
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void (*store_registers) (int regno);
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/* Read memory from the inferior process. This should generally be
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called through read_inferior_memory, which handles breakpoint shadowing.
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Read LEN bytes at MEMADDR into a buffer at MYADDR.
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Returns 0 on success and errno on failure. */
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int (*read_memory) (CORE_ADDR memaddr, unsigned char *myaddr, int len);
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/* Write memory to the inferior process. This should generally be
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called through write_inferior_memory, which handles breakpoint shadowing.
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Write LEN bytes from the buffer at MYADDR to MEMADDR.
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Returns 0 on success and errno on failure. */
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int (*write_memory) (CORE_ADDR memaddr, const unsigned char *myaddr,
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int len);
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/* Query GDB for the values of any symbols we're interested in.
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This function is called whenever we receive a "qSymbols::"
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query, which corresponds to every time more symbols (might)
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become available. NULL if we aren't interested in any
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symbols. */
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void (*look_up_symbols) (void);
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/* Send an interrupt request to the inferior process,
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however is appropriate. */
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void (*request_interrupt) (void);
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/* Read auxiliary vector data from the inferior process.
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Read LEN bytes at OFFSET into a buffer at MYADDR. */
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int (*read_auxv) (CORE_ADDR offset, unsigned char *myaddr,
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unsigned int len);
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/* Insert and remove a hardware watchpoint.
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Returns 0 on success, -1 on failure and 1 on unsupported.
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The type is coded as follows:
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2 = write watchpoint
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3 = read watchpoint
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4 = access watchpoint
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*/
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int (*insert_watchpoint) (char type, CORE_ADDR addr, int len);
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int (*remove_watchpoint) (char type, CORE_ADDR addr, int len);
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/* Returns 1 if target was stopped due to a watchpoint hit, 0 otherwise. */
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int (*stopped_by_watchpoint) (void);
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/* Returns the address associated with the watchpoint that hit, if any;
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returns 0 otherwise. */
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CORE_ADDR (*stopped_data_address) (void);
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/* Reports the text, data offsets of the executable. This is
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needed for uclinux where the executable is relocated during load
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time. */
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int (*read_offsets) (CORE_ADDR *text, CORE_ADDR *data);
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/* Fetch the address associated with a specific thread local storage
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area, determined by the specified THREAD, OFFSET, and LOAD_MODULE.
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Stores it in *ADDRESS and returns zero on success; otherwise returns
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an error code. A return value of -1 means this system does not
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support the operation. */
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int (*get_tls_address) (struct thread_info *thread, CORE_ADDR offset,
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CORE_ADDR load_module, CORE_ADDR *address);
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/* Return a string identifying the current architecture, or NULL if
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this operation is not supported. */
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const char *(*arch_string) (void);
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};
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extern struct target_ops *the_target;
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void set_target_ops (struct target_ops *);
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#define create_inferior(program, args) \
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(*the_target->create_inferior) (program, args)
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#define myattach(pid) \
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(*the_target->attach) (pid)
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#define kill_inferior() \
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(*the_target->kill) ()
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#define detach_inferior() \
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(*the_target->detach) ()
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#define mythread_alive(pid) \
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(*the_target->thread_alive) (pid)
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#define fetch_inferior_registers(regno) \
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(*the_target->fetch_registers) (regno)
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#define store_inferior_registers(regno) \
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(*the_target->store_registers) (regno)
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unsigned char mywait (char *statusp, int connected_wait);
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int read_inferior_memory (CORE_ADDR memaddr, unsigned char *myaddr, int len);
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int write_inferior_memory (CORE_ADDR memaddr, const unsigned char *myaddr,
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int len);
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void set_desired_inferior (int id);
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#endif /* TARGET_H */
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