mirror of
https://github.com/bminor/binutils-gdb.git
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1d506c26d9
This commit is the result of the following actions:
- Running gdb/copyright.py to update all of the copyright headers to
include 2024,
- Manually updating a few files the copyright.py script told me to
update, these files had copyright headers embedded within the
file,
- Regenerating gdbsupport/Makefile.in to refresh it's copyright
date,
- Using grep to find other files that still mentioned 2023. If
these files were updated last year from 2022 to 2023 then I've
updated them this year to 2024.
I'm sure I've probably missed some dates. Feel free to fix them up as
you spot them.
126 lines
3.7 KiB
C
126 lines
3.7 KiB
C
/* Copyright (C) 2017-2024 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 "gdbsupport/common-defs.h"
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#include "arc.h"
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#include <stdlib.h>
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#include <unordered_map>
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#include <string>
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/* Target description features. */
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#include "features/arc/v1-core.c"
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#include "features/arc/v1-aux.c"
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#include "features/arc/v2-core.c"
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#include "features/arc/v2-aux.c"
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#ifndef GDBSERVER
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#define STATIC_IN_GDB static
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#else
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#define STATIC_IN_GDB
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#endif
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STATIC_IN_GDB target_desc_up
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arc_create_target_description (const struct arc_arch_features &features)
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{
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/* Create a new target description. */
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target_desc_up tdesc = allocate_target_description ();
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#ifndef IN_PROCESS_AGENT
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std::string arch_name;
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/* Architecture names here must match the ones in
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ARCH_INFO_STRUCT in bfd/cpu-arc.c. */
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if (features.isa == ARC_ISA_ARCV1 && features.reg_size == 4)
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arch_name = "arc:ARC700";
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else if (features.isa == ARC_ISA_ARCV2 && features.reg_size == 4)
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arch_name = "arc:ARCv2";
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else
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{
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std::string msg = string_printf
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("Cannot determine architecture: ISA=%d; bitness=%d",
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features.isa, 8 * features.reg_size);
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gdb_assert_not_reached ("%s", msg.c_str ());
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}
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set_tdesc_architecture (tdesc.get (), arch_name.c_str ());
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#endif
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long regnum = 0;
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switch (features.isa)
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{
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case ARC_ISA_ARCV1:
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regnum = create_feature_arc_v1_core (tdesc.get (), regnum);
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regnum = create_feature_arc_v1_aux (tdesc.get (), regnum);
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break;
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case ARC_ISA_ARCV2:
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regnum = create_feature_arc_v2_core (tdesc.get (), regnum);
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regnum = create_feature_arc_v2_aux (tdesc.get (), regnum);
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break;
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default:
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std::string msg = string_printf
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("Cannot choose target description XML: %d", features.isa);
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gdb_assert_not_reached ("%s", msg.c_str ());
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}
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return tdesc;
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}
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#ifndef GDBSERVER
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/* Wrapper used by std::unordered_map to generate hash for features set. */
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struct arc_arch_features_hasher
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{
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std::size_t
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operator() (const arc_arch_features &features) const noexcept
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{
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return features.hash ();
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}
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};
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/* Cache of previously created target descriptions, indexed by the hash
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of the features set used to create them. */
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static std::unordered_map<arc_arch_features,
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const target_desc_up,
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arc_arch_features_hasher> arc_tdesc_cache;
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/* See arch/arc.h. */
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const target_desc *
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arc_lookup_target_description (const struct arc_arch_features &features)
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{
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/* Lookup in the cache first. If found, return the pointer from the
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"target_desc_up" type which is a "unique_ptr". This should be fine
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as the "arc_tdesc_cache" will persist until GDB terminates. */
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const auto it = arc_tdesc_cache.find (features);
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if (it != arc_tdesc_cache.end ())
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return it->second.get ();
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target_desc_up tdesc = arc_create_target_description (features);
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/* Add to the cache, and return a pointer borrowed from the
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target_desc_up. This is safe as the cache (and the pointers
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contained within it) are not deleted until GDB exits. */
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target_desc *ptr = tdesc.get ();
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arc_tdesc_cache.emplace (features, std::move (tdesc));
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return ptr;
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}
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#endif /* !GDBSERVER */
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