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/* Copyright (C) 2014-2022 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/>. */
#include "common-defs.h"
#include "btrace-common.h"
/* See btrace-common.h. */
const char *
btrace_format_string (enum btrace_format format)
{
switch (format)
{
case BTRACE_FORMAT_NONE:
return _("No or unknown format");
case BTRACE_FORMAT_BTS:
return _("Branch Trace Store");
case BTRACE_FORMAT_PT:
return _("Intel Processor Trace");
}
internal_error (_("Unknown branch trace format"));
}
/* See btrace-common.h. */
const char *
btrace_format_short_string (enum btrace_format format)
{
switch (format)
{
case BTRACE_FORMAT_NONE:
return "unknown";
case BTRACE_FORMAT_BTS:
return "bts";
case BTRACE_FORMAT_PT:
return "pt";
}
internal_error (_("Unknown branch trace format"));
}
/* See btrace-common.h. */
void
btrace_data::fini ()
{
switch (format)
{
case BTRACE_FORMAT_NONE:
/* Nothing to do. */
return;
case BTRACE_FORMAT_BTS:
delete variant.bts.blocks;
variant.bts.blocks = nullptr;
return;
case BTRACE_FORMAT_PT:
xfree (variant.pt.data);
return;
}
internal_error (_("Unkown branch trace format."));
}
/* See btrace-common.h. */
bool
btrace_data::empty () const
{
switch (format)
{
case BTRACE_FORMAT_NONE:
return true;
case BTRACE_FORMAT_BTS:
return variant.bts.blocks->empty ();
case BTRACE_FORMAT_PT:
return (variant.pt.size == 0);
}
internal_error (_("Unkown branch trace format."));
}
/* See btrace-common.h. */
void
btrace_data::clear ()
{
fini ();
format = BTRACE_FORMAT_NONE;
}
/* See btrace-common.h. */
int
btrace_data_append (struct btrace_data *dst,
const struct btrace_data *src)
{
switch (src->format)
{
case BTRACE_FORMAT_NONE:
return 0;
case BTRACE_FORMAT_BTS:
switch (dst->format)
{
default:
return -1;
case BTRACE_FORMAT_NONE:
dst->format = BTRACE_FORMAT_BTS;
dst->variant.bts.blocks = new std::vector<btrace_block>;
/* Fall-through. */
case BTRACE_FORMAT_BTS:
{
unsigned int blk;
/* We copy blocks in reverse order to have the oldest block at
index zero. */
blk = src->variant.bts.blocks->size ();
while (blk != 0)
{
const btrace_block &block
= src->variant.bts.blocks->at (--blk);
dst->variant.bts.blocks->push_back (block);
}
}
}
return 0;
case BTRACE_FORMAT_PT:
switch (dst->format)
{
default:
return -1;
case BTRACE_FORMAT_NONE:
dst->format = BTRACE_FORMAT_PT;
dst->variant.pt.data = NULL;
dst->variant.pt.size = 0;
/* fall-through. */
case BTRACE_FORMAT_PT:
{
gdb_byte *data;
size_t size;
size = src->variant.pt.size + dst->variant.pt.size;
data = (gdb_byte *) xmalloc (size);
if (dst->variant.pt.size > 0)
memcpy (data, dst->variant.pt.data, dst->variant.pt.size);
memcpy (data + dst->variant.pt.size, src->variant.pt.data,
src->variant.pt.size);
xfree (dst->variant.pt.data);
dst->variant.pt.data = data;
dst->variant.pt.size = size;
}
}
return 0;
}
internal_error (_("Unkown branch trace format."));
}
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