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0ee6b1c511
Replace the sve bool member of aarch64_features with a vq member that holds the vector quotient. It is zero if SVE is not present. Add std::hash<> specialization and operator== so that aarch64_features can be used as a key with std::unordered_map<>. Change the various functions that create or lookup aarch64 target descriptions to accept a const aarch64_features object rather than a growing number of arguments. Replace the multi-dimension tdesc_aarch64_list arrays used to cache target descriptions with unordered_maps indexed by aarch64_feature.
62 lines
1.9 KiB
C++
62 lines
1.9 KiB
C++
/* GNU/Linux/aarch64 specific target description, for the remote server
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for GDB.
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Copyright (C) 2017-2022 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 "server.h"
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#include "linux-aarch64-tdesc.h"
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#include "tdesc.h"
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#include "arch/aarch64.h"
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#include "linux-aarch32-low.h"
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#include <inttypes.h>
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#include <unordered_map>
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/* All possible aarch64 target descriptors. */
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static std::unordered_map<aarch64_features, target_desc *> tdesc_aarch64_map;
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/* Create the aarch64 target description. */
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const target_desc *
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aarch64_linux_read_description (const aarch64_features &features)
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{
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if (features.vq > AARCH64_MAX_SVE_VQ)
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error (_("VQ is %" PRIu64 ", maximum supported value is %d"), features.vq,
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AARCH64_MAX_SVE_VQ);
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struct target_desc *tdesc = tdesc_aarch64_map[features];
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if (tdesc == NULL)
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{
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tdesc = aarch64_create_target_description (features);
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static const char *expedite_regs_aarch64[] = { "x29", "sp", "pc", NULL };
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static const char *expedite_regs_aarch64_sve[] = { "x29", "sp", "pc",
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"vg", NULL };
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if (features.vq == 0)
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init_target_desc (tdesc, expedite_regs_aarch64);
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else
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init_target_desc (tdesc, expedite_regs_aarch64_sve);
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tdesc_aarch64_map[features] = tdesc;
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}
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return tdesc;
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}
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