| /* Branch trace support for GDB, the GNU debugger. |
| |
| Copyright (C) 2013-2015 Free Software Foundation, Inc. |
| |
| Contributed by Intel Corp. <markus.t.metzger@intel.com>. |
| |
| 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/>. */ |
| |
| #ifndef BTRACE_COMMON_H |
| #define BTRACE_COMMON_H |
| |
| /* Branch tracing (btrace) is a per-thread control-flow execution trace of the |
| inferior. For presentation purposes, the branch trace is represented as a |
| list of sequential control-flow blocks, one such list per thread. */ |
| |
| #include "vec.h" |
| |
| /* A branch trace block. |
| |
| This represents a block of sequential control-flow. Adjacent blocks will be |
| connected via calls, returns, or jumps. The latter can be direct or |
| indirect, conditional or unconditional. Branches can further be |
| asynchronous, e.g. interrupts. */ |
| struct btrace_block |
| { |
| /* The address of the first byte of the first instruction in the block. |
| The address may be zero if we do not know the beginning of this block, |
| such as for the first block in a delta trace. */ |
| CORE_ADDR begin; |
| |
| /* The address of the first byte of the last instruction in the block. */ |
| CORE_ADDR end; |
| }; |
| |
| /* Branch trace is represented as a vector of branch trace blocks starting with |
| the most recent block. */ |
| typedef struct btrace_block btrace_block_s; |
| |
| /* Define functions operating on a vector of branch trace blocks. */ |
| DEF_VEC_O (btrace_block_s); |
| |
| /* Target specific branch trace information. */ |
| struct btrace_target_info; |
| |
| /* Enumeration of btrace read types. */ |
| |
| enum btrace_read_type |
| { |
| /* Send all available trace. */ |
| BTRACE_READ_ALL, |
| |
| /* Send all available trace, if it changed. */ |
| BTRACE_READ_NEW, |
| |
| /* Send the trace since the last request. This will fail if the trace |
| buffer overflowed. */ |
| BTRACE_READ_DELTA |
| }; |
| |
| /* Enumeration of btrace errors. */ |
| |
| enum btrace_error |
| { |
| /* No error. Everything is OK. */ |
| BTRACE_ERR_NONE, |
| |
| /* An unknown error. */ |
| BTRACE_ERR_UNKNOWN, |
| |
| /* Branch tracing is not supported on this system. */ |
| BTRACE_ERR_NOT_SUPPORTED, |
| |
| /* The branch trace buffer overflowed; no delta read possible. */ |
| BTRACE_ERR_OVERFLOW |
| }; |
| |
| #endif /* BTRACE_COMMON_H */ |