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- /* Copyright (C) 2017-2022 Free Software Foundation, Inc.
- This file is part of GDB.
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3 of the License, or
- (at your option) any later version.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>. */
- #ifndef ARCH_ARC_H
- #define ARCH_ARC_H
- #include "gdbsupport/tdesc.h"
- /* Supported ARC ISAs. */
- enum arc_isa
- {
- ARC_ISA_ARCV1 = 1, /* a.k.a. ARCompact (ARC600, ARC700) */
- ARC_ISA_ARCV2 /* such as ARC EM and ARC HS */
- };
- struct arc_arch_features
- {
- arc_arch_features (int reg_size, arc_isa isa)
- : reg_size (reg_size), isa (isa)
- {}
- /* Register size in bytes. Possible values are 4, and 8. A 0 indicates
- an uninitialised value. */
- const int reg_size;
- /* See ARC_ISA enum. */
- const arc_isa isa;
- /* Equality operator. */
- bool operator== (const struct arc_arch_features &rhs) const
- {
- return (reg_size == rhs.reg_size && isa == rhs.isa);
- }
- /* Inequality operator. */
- bool operator!= (const struct arc_arch_features &rhs) const
- {
- return !(*this == rhs);
- }
- /* Used by std::unordered_map to hash the feature sets. The hash is
- calculated in the manner below:
- REG_SIZE | ISA
- 5-bits | 4-bits */
- std::size_t hash () const noexcept
- {
- std::size_t val = ((reg_size & 0x1f) << 8 | (isa & 0xf) << 0);
- return val;
- }
- };
- #ifdef GDBSERVER
- /* Create and return a target description that is compatible with FEATURES.
- The only external client of this must be the gdbserver which manipulates
- the returned data. */
- target_desc_up arc_create_target_description
- (const struct arc_arch_features &features);
- #else
- /* Lookup the cache for a target description matching the FEATURES.
- If nothing is found, then create one and return it. */
- const target_desc *arc_lookup_target_description
- (const struct arc_arch_features &features);
- #endif /* GDBSERVER */
- #endif /* ARCH_ARC_H */
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