mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-11-21 01:12:32 +08:00
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.
137 lines
4.1 KiB
C
137 lines
4.1 KiB
C
/* Copyright (C) 2018-2024 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 "riscv.h"
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#include <stdlib.h>
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#include <unordered_map>
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#include "../features/riscv/32bit-cpu.c"
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#include "../features/riscv/64bit-cpu.c"
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#include "../features/riscv/32bit-fpu.c"
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#include "../features/riscv/64bit-fpu.c"
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#include "../features/riscv/rv32e-xregs.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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/* See arch/riscv.h. */
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STATIC_IN_GDB target_desc_up
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riscv_create_target_description (const struct riscv_gdbarch_features features)
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{
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/* Now we should 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 = "riscv";
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if (features.xlen == 4)
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{
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if (features.embedded)
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arch_name.append (":rv32e");
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else
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arch_name.append (":rv32i");
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}
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else if (features.xlen == 8)
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arch_name.append (":rv64i");
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else if (features.xlen == 16)
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arch_name.append (":rv128i");
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if (features.flen == 4)
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arch_name.append ("f");
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else if (features.flen == 8)
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arch_name.append ("d");
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else if (features.flen == 16)
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arch_name.append ("q");
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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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/* For now we only support creating 32-bit or 64-bit x-registers. */
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if (features.xlen == 4)
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{
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if (features.embedded)
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regnum = create_feature_riscv_rv32e_xregs (tdesc.get (), regnum);
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else
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regnum = create_feature_riscv_32bit_cpu (tdesc.get (), regnum);
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}
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else if (features.xlen == 8)
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regnum = create_feature_riscv_64bit_cpu (tdesc.get (), regnum);
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/* For now we only support creating 32-bit or 64-bit f-registers. */
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if (features.flen == 4)
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regnum = create_feature_riscv_32bit_fpu (tdesc.get (), regnum);
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else if (features.flen == 8)
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regnum = create_feature_riscv_64bit_fpu (tdesc.get (), regnum);
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/* Currently GDB only supports vector features coming from remote
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targets. We don't support creating vector features on native targets
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(yet). */
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if (features.vlen != 0)
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error (_("unable to create vector feature"));
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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 feature set. */
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struct riscv_gdbarch_features_hasher
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{
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std::size_t
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operator() (const riscv_gdbarch_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 seen target descriptions, indexed by the feature set
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that created them. */
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static std::unordered_map<riscv_gdbarch_features,
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const target_desc_up,
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riscv_gdbarch_features_hasher> riscv_tdesc_cache;
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/* See arch/riscv.h. */
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const target_desc *
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riscv_lookup_target_description (const struct riscv_gdbarch_features features)
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{
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/* Lookup in the cache. If we find it then return the pointer out of
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the target_desc_up (which is a unique_ptr). This is safe as the
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riscv_tdesc_cache will exist until GDB exits. */
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const auto it = riscv_tdesc_cache.find (features);
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if (it != riscv_tdesc_cache.end ())
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return it->second.get ();
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target_desc_up tdesc (riscv_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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riscv_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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