| /* Target operations for the remote server for GDB. |
| Copyright (C) 2002, 2003, 2004, 2005, 2007, 2008 |
| 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 3 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, see <http://www.gnu.org/licenses/>. */ |
| |
| #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 |
| { |
| unsigned long 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. |
| |
| Returns -1 if attaching is unsupported, 0 on success, and calls |
| error() otherwise. */ |
| |
| int (*attach) (unsigned long pid); |
| |
| /* Kill all inferiors. */ |
| |
| void (*kill) (void); |
| |
| /* Detach from all inferiors. |
| Return -1 on failure, and 0 on success. */ |
| |
| int (*detach) (void); |
| |
| /* Wait for inferiors to end. */ |
| |
| void (*join) (void); |
| |
| /* Return 1 iff the thread with process ID PID is alive. */ |
| |
| int (*thread_alive) (unsigned long pid); |
| |
| /* Resume the inferior process. */ |
| |
| void (*resume) (struct thread_resume *resume_info); |
| |
| /* Wait for the inferior process to change state. |
| |
| STATUS will be filled in with a response code to send to GDB. |
| |
| Returns the signal which caused the process to stop, in the |
| remote protocol numbering (e.g. TARGET_SIGNAL_STOP), or the |
| exit code as an integer if *STATUS is 'W'. */ |
| |
| 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. |
| |
| Returns 0 on success and errno on failure. */ |
| |
| int (*read_memory) (CORE_ADDR memaddr, unsigned 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 unsigned 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 an interrupt request to the inferior process, |
| however is appropriate. */ |
| |
| void (*request_interrupt) (void); |
| |
| /* Read auxiliary vector data from the inferior process. |
| |
| Read LEN bytes at OFFSET into a buffer at MYADDR. */ |
| |
| int (*read_auxv) (CORE_ADDR offset, unsigned char *myaddr, |
| unsigned int len); |
| |
| /* Insert and remove a hardware watchpoint. |
| Returns 0 on success, -1 on failure and 1 on unsupported. |
| The type is coded as follows: |
| 2 = write watchpoint |
| 3 = read watchpoint |
| 4 = access watchpoint |
| */ |
| |
| int (*insert_watchpoint) (char type, CORE_ADDR addr, int len); |
| int (*remove_watchpoint) (char type, CORE_ADDR addr, int len); |
| |
| /* Returns 1 if target was stopped due to a watchpoint hit, 0 otherwise. */ |
| |
| int (*stopped_by_watchpoint) (void); |
| |
| /* Returns the address associated with the watchpoint that hit, if any; |
| returns 0 otherwise. */ |
| |
| CORE_ADDR (*stopped_data_address) (void); |
| |
| /* Reports the text, data offsets of the executable. This is |
| needed for uclinux where the executable is relocated during load |
| time. */ |
| |
| int (*read_offsets) (CORE_ADDR *text, CORE_ADDR *data); |
| |
| /* Fetch the address associated with a specific thread local storage |
| area, determined by the specified THREAD, OFFSET, and LOAD_MODULE. |
| Stores it in *ADDRESS and returns zero on success; otherwise returns |
| an error code. A return value of -1 means this system does not |
| support the operation. */ |
| |
| int (*get_tls_address) (struct thread_info *thread, CORE_ADDR offset, |
| CORE_ADDR load_module, CORE_ADDR *address); |
| |
| /* Return a string identifying the current architecture, or NULL if |
| this operation is not supported. */ |
| const char *(*arch_string) (void); |
| |
| /* Read/Write from/to spufs using qXfer packets. */ |
| int (*qxfer_spu) (const char *annex, unsigned char *readbuf, |
| unsigned const char *writebuf, CORE_ADDR offset, int len); |
| |
| /* Fill BUF with an hostio error packet representing the last hostio |
| error. */ |
| void (*hostio_last_error) (char *buf); |
| }; |
| |
| 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) |
| |
| #define join_inferior() \ |
| (*the_target->join) () |
| |
| unsigned char mywait (char *statusp, int connected_wait); |
| |
| int read_inferior_memory (CORE_ADDR memaddr, unsigned char *myaddr, int len); |
| |
| int write_inferior_memory (CORE_ADDR memaddr, const unsigned char *myaddr, |
| int len); |
| |
| void set_desired_inferior (int id); |
| |
| #endif /* TARGET_H */ |