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