02d2762576
Add functions to enable, disable, clear, and fetch a thread's branch trace. gdb/ * target.h: Include btrace.h. (struct target_ops) <to_supports_btrace, to_enable_btrace, to_disable_btrace, to_teardown_btrace, to_read_btrace>: New. * target.c (target_supports_btrace): New function. (target_enable_btrace): New function. (target_disable_btrace): New function. (target_teardown_btrace): New function. (target_read_btrace): New function. * btrace.h: New file. * btrace.c: New file. * Makefile.in: Add btrace.c. * gdbthread.h: Include btrace.h. (struct thread_info): Add btrace field. * thread.c: Include btrace.h. (clear_thread_inferior_resources): Call target_teardown_btrace. * common/btrace-common.h: New file.
73 lines
2.2 KiB
C
73 lines
2.2 KiB
C
/* Branch trace support for GDB, the GNU debugger.
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Copyright (C) 2013 Free Software Foundation, Inc.
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Contributed by Intel Corp. <markus.t.metzger@intel.com>.
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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 BTRACE_COMMON_H
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#define BTRACE_COMMON_H
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/* Branch tracing (btrace) is a per-thread control-flow execution trace of the
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inferior. For presentation purposes, the branch trace is represented as a
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list of sequential control-flow blocks, one such list per thread. */
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#ifdef GDBSERVER
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# include "server.h"
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#else
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# include "defs.h"
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#endif
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#include "vec.h"
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/* A branch trace block.
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This represents a block of sequential control-flow. Adjacent blocks will be
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connected via calls, returns, or jumps. The latter can be direct or
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indirect, conditional or unconditional. Branches can further be
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asynchronous, e.g. interrupts. */
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struct btrace_block
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{
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/* The address of the first byte of the first instruction in the block. */
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CORE_ADDR begin;
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/* The address of the first byte of the last instruction in the block. */
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CORE_ADDR end;
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};
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/* Branch trace is represented as a vector of branch trace blocks starting with
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the most recent block. */
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typedef struct btrace_block btrace_block_s;
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/* Define functions operating on a vector of branch trace blocks. */
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DEF_VEC_O (btrace_block_s);
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/* Target specific branch trace information. */
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struct btrace_target_info;
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/* Enumeration of btrace read types. */
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enum btrace_read_type
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{
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/* Send all available trace. */
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btrace_read_all,
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/* Send all available trace, if it changed. */
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btrace_read_new
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};
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#endif /* BTRACE_COMMON_H */
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