148 lines
4.6 KiB
C
148 lines
4.6 KiB
C
/* Internal interfaces for the GNU/Linux specific target code for gdbserver.
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Copyright (C) 2002, 2004, 2005, 2007 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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