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https://sourceware.org/git/binutils-gdb.git
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1478fa3e48
Change all uses of gdb::unordered_map<string, T> to gdb::unordered_string_map<T> Using unordered_string_map avoids constructing a temporary std::string (possibly with dynamic allocation) when looking up values from `const char *`. I don't see any downsides to using unordered_string_map over unordered_map, even if all the lookups are done using existing std::string objects that would be built anyway. I think there are places where we could refactor the code to avoid constructing unnecessary std::string objects, but that is out of scope for this patch. There should be no change of behavior with this patch. Change-Id: Ic4df78b97f2755d5821bb66942b9e4d9a79a3dc5 Approved-by: Kevin Buettner <kevinb@redhat.com>
97 lines
3.2 KiB
C++
97 lines
3.2 KiB
C++
/* Target-dependent code for the AMDGPU architectures.
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Copyright (C) 2019-2026 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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#ifndef GDB_AMDGPU_TDEP_H
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#define GDB_AMDGPU_TDEP_H
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#include "gdbarch.h"
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#include <amd-dbgapi/amd-dbgapi.h>
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/* Provide gdb::unordered_map::Hash for amd_dbgapi_register_id_t. */
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struct register_id_hash
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{
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size_t
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operator() (const amd_dbgapi_register_id_t ®ister_id) const
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{
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return std::hash<decltype (register_id.handle)> () (register_id.handle);
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}
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};
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/* Provide gdb::unordered_map::Equal for amd_dbgapi_register_id_t. */
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struct register_id_equal_to
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{
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bool
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operator() (const amd_dbgapi_register_id_t &lhs,
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const amd_dbgapi_register_id_t &rhs) const
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{
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return std::equal_to<decltype (lhs.handle)> () (lhs.handle, rhs.handle);
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}
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};
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/* AMDGPU architecture specific information. */
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struct amdgpu_gdbarch_tdep : gdbarch_tdep_base
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{
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/* This architecture's breakpoint instruction. */
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gdb::unique_xmalloc_ptr<gdb_byte> breakpoint_instruction_bytes;
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size_t breakpoint_instruction_size;
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/* A vector of register_ids indexed by their equivalent gdb regnum. */
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std::vector<amd_dbgapi_register_id_t> register_ids;
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/* A vector of register_properties indexed by their equivalent gdb regnum. */
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std::vector<amd_dbgapi_register_properties_t> register_properties;
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/* A vector of register names indexed by their equivalent gdb regnum. */
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std::vector<std::string> register_names;
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/* A vector of register types created from the amd-dbgapi type strings,
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indexed by their equivalent gdb regnum. These are computed lazily by
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amdgpu_register_type, entries that haven't been computed yet are
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nullptr. */
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std::vector<type *> register_types;
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/* A vector of GDB register numbers indexed by DWARF register number.
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Unused DWARF register numbers map to value -1. */
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std::vector<int> dwarf_regnum_to_gdb_regnum;
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/* A map of gdb regnums keyed by they equivalent register_id. */
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gdb::unordered_map<amd_dbgapi_register_id_t, int, register_id_hash,
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register_id_equal_to>
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regnum_map;
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/* A map of register_class_ids keyed by their name. */
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gdb::unordered_string_map<amd_dbgapi_register_class_id_t>
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register_class_map;
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};
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/* Return true if GDBARCH is of an AMDGPU architecture. */
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bool is_amdgpu_arch (struct gdbarch *gdbarch);
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/* Return true if ABFD is of an AMDGPU architecture. */
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bool is_amdgpu_arch (bfd *abfd);
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/* Return the amdgpu-specific data associated to ARCH. */
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amdgpu_gdbarch_tdep *get_amdgpu_gdbarch_tdep (gdbarch *arch);
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#endif /* GDB_AMDGPU_TDEP_H */
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