mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-21 04:42:53 +08:00
4a94e36819
This commit brings all the changes made by running gdb/copyright.py as per GDB's Start of New Year Procedure. For the avoidance of doubt, all changes in this commits were performed by the script.
264 lines
6.4 KiB
C++
264 lines
6.4 KiB
C++
/* Branch trace support for GDB, the GNU debugger.
|
|
|
|
Copyright (C) 2013-2022 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 COMMON_BTRACE_COMMON_H
|
|
#define COMMON_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. */
|
|
|
|
/* 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;
|
|
|
|
/* Simple constructor. */
|
|
btrace_block (CORE_ADDR begin, CORE_ADDR end)
|
|
: begin (begin),
|
|
end (end)
|
|
{
|
|
/* Nothing. */
|
|
}
|
|
};
|
|
|
|
/* Enumeration of btrace formats. */
|
|
|
|
enum btrace_format
|
|
{
|
|
/* No branch trace format. */
|
|
BTRACE_FORMAT_NONE,
|
|
|
|
/* Branch trace is in Branch Trace Store (BTS) format.
|
|
Actually, the format is a sequence of blocks derived from BTS. */
|
|
BTRACE_FORMAT_BTS,
|
|
|
|
/* Branch trace is in Intel Processor Trace format. */
|
|
BTRACE_FORMAT_PT
|
|
};
|
|
|
|
/* An enumeration of cpu vendors. */
|
|
|
|
enum btrace_cpu_vendor
|
|
{
|
|
/* We do not know this vendor. */
|
|
CV_UNKNOWN,
|
|
|
|
/* Intel. */
|
|
CV_INTEL,
|
|
|
|
/* AMD. */
|
|
CV_AMD
|
|
};
|
|
|
|
/* A cpu identifier. */
|
|
|
|
struct btrace_cpu
|
|
{
|
|
/* The processor vendor. */
|
|
enum btrace_cpu_vendor vendor;
|
|
|
|
/* The cpu family. */
|
|
unsigned short family;
|
|
|
|
/* The cpu model. */
|
|
unsigned char model;
|
|
|
|
/* The cpu stepping. */
|
|
unsigned char stepping;
|
|
};
|
|
|
|
/* A BTS configuration. */
|
|
|
|
struct btrace_config_bts
|
|
{
|
|
/* The size of the branch trace buffer in bytes.
|
|
|
|
This is unsigned int and not size_t since it is registered as
|
|
control variable for "set record btrace bts buffer-size". */
|
|
unsigned int size;
|
|
};
|
|
|
|
/* An Intel Processor Trace configuration. */
|
|
|
|
struct btrace_config_pt
|
|
{
|
|
/* The size of the branch trace buffer in bytes.
|
|
|
|
This is unsigned int and not size_t since it is registered as
|
|
control variable for "set record btrace pt buffer-size". */
|
|
unsigned int size;
|
|
};
|
|
|
|
/* A branch tracing configuration.
|
|
|
|
This describes the requested configuration as well as the actually
|
|
obtained configuration.
|
|
We describe the configuration for all different formats so we can
|
|
easily switch between formats. */
|
|
|
|
struct btrace_config
|
|
{
|
|
/* The branch tracing format. */
|
|
enum btrace_format format;
|
|
|
|
/* The BTS format configuration. */
|
|
struct btrace_config_bts bts;
|
|
|
|
/* The Intel Processor Trace format configuration. */
|
|
struct btrace_config_pt pt;
|
|
};
|
|
|
|
/* Branch trace in BTS format. */
|
|
struct btrace_data_bts
|
|
{
|
|
/* Branch trace is represented as a vector of branch trace blocks starting
|
|
with the most recent block. This needs to be a pointer as we place
|
|
btrace_data_bts into a union. */
|
|
std::vector<btrace_block> *blocks;
|
|
};
|
|
|
|
/* Configuration information to go with the trace data. */
|
|
struct btrace_data_pt_config
|
|
{
|
|
/* The processor on which the trace has been collected. */
|
|
struct btrace_cpu cpu;
|
|
};
|
|
|
|
/* Branch trace in Intel Processor Trace format. */
|
|
struct btrace_data_pt
|
|
{
|
|
/* Some configuration information to go with the data. */
|
|
struct btrace_data_pt_config config;
|
|
|
|
/* The trace data. */
|
|
gdb_byte *data;
|
|
|
|
/* The size of DATA in bytes. */
|
|
size_t size;
|
|
};
|
|
|
|
/* The branch trace data. */
|
|
struct btrace_data
|
|
{
|
|
btrace_data () = default;
|
|
|
|
~btrace_data ()
|
|
{
|
|
fini ();
|
|
}
|
|
|
|
btrace_data &operator= (btrace_data &&other)
|
|
{
|
|
if (this != &other)
|
|
{
|
|
fini ();
|
|
format = other.format;
|
|
variant = other.variant;
|
|
other.format = BTRACE_FORMAT_NONE;
|
|
}
|
|
return *this;
|
|
}
|
|
|
|
/* Return true if this is empty; false otherwise. */
|
|
bool empty () const;
|
|
|
|
/* Clear this object. */
|
|
void clear ();
|
|
|
|
enum btrace_format format = BTRACE_FORMAT_NONE;
|
|
|
|
union
|
|
{
|
|
/* Format == BTRACE_FORMAT_BTS. */
|
|
struct btrace_data_bts bts;
|
|
|
|
/* Format == BTRACE_FORMAT_PT. */
|
|
struct btrace_data_pt pt;
|
|
} variant;
|
|
|
|
private:
|
|
|
|
DISABLE_COPY_AND_ASSIGN (btrace_data);
|
|
|
|
void fini ();
|
|
};
|
|
|
|
/* 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
|
|
};
|
|
|
|
/* Return a string representation of FORMAT. */
|
|
extern const char *btrace_format_string (enum btrace_format format);
|
|
|
|
/* Return an abbreviation string representation of FORMAT. */
|
|
extern const char *btrace_format_short_string (enum btrace_format format);
|
|
|
|
/* Append the branch trace data from SRC to the end of DST.
|
|
Both SRC and DST must use the same format.
|
|
Returns zero on success; a negative number otherwise. */
|
|
extern int btrace_data_append (struct btrace_data *dst,
|
|
const struct btrace_data *src);
|
|
|
|
#endif /* COMMON_BTRACE_COMMON_H */
|