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[/] [openrisc/] [trunk/] [gnu-old/] [gdb-6.8/] [gdb/] [gdbserver/] [linux-low.h] - Blame information for rev 853

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1 24 jeremybenn
/* Internal interfaces for the GNU/Linux specific target code for gdbserver.
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   Copyright (C) 2002, 2004, 2005, 2007, 2008 Free Software Foundation, Inc.
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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 3 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, see <http://www.gnu.org/licenses/>.  */
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#ifdef HAVE_THREAD_DB_H
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#include <thread_db.h>
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#endif
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#ifdef HAVE_LINUX_REGSETS
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typedef void (*regset_fill_func) (void *);
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typedef void (*regset_store_func) (const void *);
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enum regset_type {
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  GENERAL_REGS,
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  FP_REGS,
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  EXTENDED_REGS,
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};
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struct regset_info
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{
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  int get_request, set_request;
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  int size;
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  enum regset_type type;
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  regset_fill_func fill_function;
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  regset_store_func store_function;
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};
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extern struct regset_info target_regsets[];
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#endif
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struct linux_target_ops
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{
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  int num_regs;
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  int *regmap;
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  int (*cannot_fetch_register) (int);
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  /* Returns 0 if we can store the register, 1 if we can not
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     store the register, and 2 if failure to store the register
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     is acceptable.  */
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  int (*cannot_store_register) (int);
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  CORE_ADDR (*get_pc) (void);
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  void (*set_pc) (CORE_ADDR newpc);
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  const unsigned char *breakpoint;
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  int breakpoint_len;
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  CORE_ADDR (*breakpoint_reinsert_addr) (void);
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  int decr_pc_after_break;
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  int (*breakpoint_at) (CORE_ADDR pc);
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  /* Watchpoint related functions.  See target.h for comments.  */
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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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  int (*stopped_by_watchpoint) (void);
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  CORE_ADDR (*stopped_data_address) (void);
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  /* Whether to left-pad registers for PEEKUSR/POKEUSR if they are smaller
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     than an xfer unit.  */
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  int left_pad_xfer;
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  /* What string to report to GDB when it asks for the architecture,
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     or NULL not to answer.  */
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  const char *arch_string;
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};
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extern struct linux_target_ops the_low_target;
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#define get_process(inf) ((struct process_info *)(inf))
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#define get_thread_process(thr) (get_process (inferior_target_data (thr)))
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#define get_process_thread(proc) ((struct thread_info *) \
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                                  find_inferior_id (&all_threads, \
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                                  get_process (proc)->lwpid))
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struct process_info
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{
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  struct inferior_list_entry head;
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  unsigned long lwpid;
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  /* If this flag is set, the next SIGSTOP will be ignored (the
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     process will be immediately resumed).  This means that either we
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     sent the SIGSTOP to it ourselves and got some other pending event
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     (so the SIGSTOP is still pending), or that we stopped the
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     inferior implicitly via PTRACE_ATTACH and have not waited for it
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     yet.  */
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  int stop_expected;
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  /* If this flag is set, the process is known to be stopped right now (stop
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     event already received in a wait()).  */
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  int stopped;
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  /* When stopped is set, the last wait status recorded for this process.  */
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  int last_status;
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  /* If this flag is set, STATUS_PENDING is a waitstatus that has not yet
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     been reported.  */
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  int status_pending_p;
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  int status_pending;
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  /* If this flag is set, the pending status is a (GDB-placed) breakpoint.  */
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  int pending_is_breakpoint;
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  CORE_ADDR pending_stop_pc;
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  /* If this is non-zero, it is a breakpoint to be reinserted at our next
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     stop (SIGTRAP stops only).  */
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  CORE_ADDR bp_reinsert;
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  /* If this flag is set, the last continue operation on this process
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     was a single-step.  */
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  int stepping;
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  /* If this is non-zero, it points to a chain of signals which need to
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     be delivered to this process.  */
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  struct pending_signals *pending_signals;
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  /* A link used when resuming.  It is initialized from the resume request,
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     and then processed and cleared in linux_resume_one_process.  */
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  struct thread_resume *resume;
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  int thread_known;
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  unsigned long tid;
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#ifdef HAVE_THREAD_DB_H
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  /* The thread handle, used for e.g. TLS access.  Only valid if
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     THREAD_KNOWN is set.  */
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  td_thrhandle_t th;
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#endif
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};
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extern struct inferior_list all_processes;
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void linux_attach_lwp (unsigned long pid);
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int thread_db_init (int use_events);
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int thread_db_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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