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/* GDB generic memory tagging functions.
Copyright (C) 2022-2023 Free Software Foundation, Inc.
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 "defs.h"
#include "memtag.h"
#include "bfd.h"
/* See memtag.h */
bool
get_next_core_memtag_section (bfd *abfd, asection *section,
CORE_ADDR address, memtag_section_info &info)
{
/* If the caller provided no SECTION to start from, search from the
beginning. */
if (section == nullptr)
section = bfd_get_section_by_name (abfd, "memtag");
/* Go through all the memtag sections and figure out if ADDRESS
falls within one of the memory ranges that contain tags. */
while (section != nullptr)
{
size_t memtag_range_size = section->rawsize;
size_t tags_size = bfd_section_size (section);
/* Empty memory range or empty tag dump should not happen. Warn about
it but keep going through the sections. */
if (memtag_range_size == 0 || tags_size == 0)
{
warning (_("Found memtag section with empty memory "
"range or empty tag dump"));
continue;
}
else
{
CORE_ADDR start_address = bfd_section_vma (section);
CORE_ADDR end_address = start_address + memtag_range_size;
/* Is the address within [start_address, end_address)? */
if (address >= start_address
&& address < end_address)
{
info.start_address = start_address;
info.end_address = end_address;
info.memtag_section = section;
return true;
}
}
section = bfd_get_next_section_by_name (abfd, section);
}
return false;
}
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