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9accd112a6
We define the following packets:
Qbtrace:bts enable branch tracing for the current thread
returns "OK" or "Enn"
Qbtrace:off disable branch tracing for the current thread
returns "OK" or "Enn"
qXfer:btrace:read read the full branch trace data for the current thread
gdb/
* target.h (enum target_object): Add TARGET_OBJECT_BTRACE.
* remote.c: Include btrace.h.
(struct btrace_target_info): New struct.
(remote_supports_btrace): New function.
(send_Qbtrace): New function.
(remote_enable_btrace): New function.
(remote_disable_btrace): New function.
(remote_teardown_btrace): New function.
(remote_read_btrace): New function.
(init_remote_ops): Add btrace ops.
(enum <unnamed>): Add btrace packets.
(struct protocol_feature remote_protocol_features[]): Add btrace packets.
(_initialize_remote): Add packet configuration for branch tracing.
gdbserver/
* target.h (struct target_ops): Add btrace ops.
(target_supports_btrace): New macro.
(target_enable_btrace): New macro.
(target_disable_btrace): New macro.
(target_read_btrace): New macro.
* gdbthread.h (struct thread_info): Add btrace field.
* server.c: Include btrace-common.h.
(handle_btrace_general_set): New function.
(handle_btrace_enable): New function.
(handle_btrace_disable): New function.
(handle_general_set): Call handle_btrace_general_set.
(handle_qxfer_btrace): New function.
(struct qxfer qxfer_packets[]): Add btrace entry.
* inferiors.c (remove_thread): Disable btrace.
* linux-low: Include linux-btrace.h.
(linux_low_enable_btrace): New function.
(linux_low_read_btrace): New function.
(linux_target_ops): Add btrace ops.
* configure.srv (i[34567]86-*-linux*): Add linux-btrace.o.
Add srv_linux_btrace=yes.
(x86_64-*-linux*): Add linux-btrace.o.
Add srv_linux_btrace=yes.
* configure.ac: Define HAVE_LINUX_BTRACE.
* config.in: Regenerated.
* configure: Regenerated.
78 lines
2.7 KiB
C
78 lines
2.7 KiB
C
/* Multi-thread control defs for remote server for GDB.
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Copyright (C) 1993-2013 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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#ifndef GDB_THREAD_H
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#define GDB_THREAD_H
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#include "server.h"
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struct btrace_target_info;
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struct thread_info
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{
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struct inferior_list_entry entry;
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void *target_data;
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void *regcache_data;
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/* The last resume GDB requested on this thread. */
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enum resume_kind last_resume_kind;
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/* The last wait status reported for this thread. */
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struct target_waitstatus last_status;
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/* Given `while-stepping', a thread may be collecting data for more
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than one tracepoint simultaneously. E.g.:
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ff0001 INSN1 <-- TP1, while-stepping 10 collect $regs
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ff0002 INSN2
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ff0003 INSN3 <-- TP2, collect $regs
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ff0004 INSN4 <-- TP3, while-stepping 10 collect $regs
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ff0005 INSN5
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Notice that when instruction INSN5 is reached, the while-stepping
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actions of both TP1 and TP3 are still being collected, and that TP2
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had been collected meanwhile. The whole range of ff0001-ff0005
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should be single-stepped, due to at least TP1's while-stepping
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action covering the whole range.
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On the other hand, the same tracepoint with a while-stepping action
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may be hit by more than one thread simultaneously, hence we can't
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keep the current step count in the tracepoint itself.
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This is the head of the list of the states of `while-stepping'
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tracepoint actions this thread is now collecting; NULL if empty.
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Each item in the list holds the current step of the while-stepping
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action. */
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struct wstep_state *while_stepping;
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/* Branch trace target information for this thread. */
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struct btrace_target_info *btrace;
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};
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extern struct inferior_list all_threads;
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void remove_thread (struct thread_info *thread);
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void add_thread (ptid_t ptid, void *target_data);
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struct thread_info *find_thread_ptid (ptid_t ptid);
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struct thread_info *gdb_id_to_thread (unsigned int);
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/* Get current thread ID (Linux task ID). */
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#define current_ptid ((struct inferior_list_entry *) current_inferior)->id
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#endif /* GDB_THREAD_H */
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