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