| /* Internal interfaces for the GNU/Linux specific target code for gdbserver. |
| Copyright (C) 2002, 2004, 2005, 2007, 2008 Free Software Foundation, Inc. |
| |
| 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/>. */ |
| |
| #ifdef HAVE_THREAD_DB_H |
| #include <thread_db.h> |
| #endif |
| |
| #ifdef HAVE_LINUX_REGSETS |
| typedef void (*regset_fill_func) (void *); |
| typedef void (*regset_store_func) (const void *); |
| enum regset_type { |
| GENERAL_REGS, |
| FP_REGS, |
| EXTENDED_REGS, |
| }; |
| |
| struct regset_info |
| { |
| int get_request, set_request; |
| int size; |
| enum regset_type type; |
| regset_fill_func fill_function; |
| regset_store_func store_function; |
| }; |
| extern struct regset_info target_regsets[]; |
| #endif |
| |
| struct linux_target_ops |
| { |
| /* Architecture-specific setup. */ |
| void (*arch_setup) (void); |
| |
| int num_regs; |
| int *regmap; |
| int (*cannot_fetch_register) (int); |
| |
| /* Returns 0 if we can store the register, 1 if we can not |
| store the register, and 2 if failure to store the register |
| is acceptable. */ |
| int (*cannot_store_register) (int); |
| CORE_ADDR (*get_pc) (void); |
| void (*set_pc) (CORE_ADDR newpc); |
| const unsigned char *breakpoint; |
| int breakpoint_len; |
| CORE_ADDR (*breakpoint_reinsert_addr) (void); |
| |
| |
| int decr_pc_after_break; |
| int (*breakpoint_at) (CORE_ADDR pc); |
| |
| /* Watchpoint related functions. See target.h for comments. */ |
| int (*insert_watchpoint) (char type, CORE_ADDR addr, int len); |
| int (*remove_watchpoint) (char type, CORE_ADDR addr, int len); |
| int (*stopped_by_watchpoint) (void); |
| CORE_ADDR (*stopped_data_address) (void); |
| |
| /* Hooks to reformat register data for PEEKUSR/POKEUSR (in particular |
| for registers smaller than an xfer unit). */ |
| void (*collect_ptrace_register) (int regno, char *buf); |
| void (*supply_ptrace_register) (int regno, const char *buf); |
| }; |
| |
| extern struct linux_target_ops the_low_target; |
| |
| #define get_process(inf) ((struct process_info *)(inf)) |
| #define get_thread_process(thr) (get_process (inferior_target_data (thr))) |
| #define get_process_thread(proc) ((struct thread_info *) \ |
| find_inferior_id (&all_threads, \ |
| get_process (proc)->lwpid)) |
| |
| struct process_info |
| { |
| struct inferior_list_entry head; |
| unsigned long lwpid; |
| |
| /* If this flag is set, the next SIGSTOP will be ignored (the |
| process will be immediately resumed). This means that either we |
| sent the SIGSTOP to it ourselves and got some other pending event |
| (so the SIGSTOP is still pending), or that we stopped the |
| inferior implicitly via PTRACE_ATTACH and have not waited for it |
| yet. */ |
| int stop_expected; |
| |
| /* If this flag is set, the process is known to be stopped right now (stop |
| event already received in a wait()). */ |
| int stopped; |
| |
| /* When stopped is set, the last wait status recorded for this process. */ |
| int last_status; |
| |
| /* If this flag is set, STATUS_PENDING is a waitstatus that has not yet |
| been reported. */ |
| int status_pending_p; |
| int status_pending; |
| |
| /* If this flag is set, the pending status is a (GDB-placed) breakpoint. */ |
| int pending_is_breakpoint; |
| CORE_ADDR pending_stop_pc; |
| |
| /* If this is non-zero, it is a breakpoint to be reinserted at our next |
| stop (SIGTRAP stops only). */ |
| CORE_ADDR bp_reinsert; |
| |
| /* If this flag is set, the last continue operation on this process |
| was a single-step. */ |
| int stepping; |
| |
| /* If this is non-zero, it points to a chain of signals which need to |
| be delivered to this process. */ |
| struct pending_signals *pending_signals; |
| |
| /* A link used when resuming. It is initialized from the resume request, |
| and then processed and cleared in linux_resume_one_process. */ |
| |
| struct thread_resume *resume; |
| |
| int thread_known; |
| unsigned long tid; |
| #ifdef HAVE_THREAD_DB_H |
| /* The thread handle, used for e.g. TLS access. Only valid if |
| THREAD_KNOWN is set. */ |
| td_thrhandle_t th; |
| #endif |
| }; |
| |
| extern struct inferior_list all_processes; |
| |
| void linux_attach_lwp (unsigned long pid); |
| |
| int thread_db_init (int use_events); |
| int thread_db_get_tls_address (struct thread_info *thread, CORE_ADDR offset, |
| CORE_ADDR load_module, CORE_ADDR *address); |