1 /* Copyright (C) 2018-2020 Free Software Foundation, Inc.
3 This file is part of GDB.
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 3 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program. If not, see <http://www.gnu.org/licenses/>. */
18 #include "gdbsupport/common-defs.h"
21 #include <unordered_map>
23 #include "../features/riscv/32bit-cpu.c"
24 #include "../features/riscv/64bit-cpu.c"
25 #include "../features/riscv/32bit-fpu.c"
26 #include "../features/riscv/64bit-fpu.c"
29 #define STATIC_IN_GDB static
34 /* See arch/riscv.h. */
36 STATIC_IN_GDB target_desc
*
37 riscv_create_target_description (const struct riscv_gdbarch_features features
)
39 /* Now we should create a new target description. */
40 target_desc
*tdesc
= allocate_target_description ();
42 #ifndef IN_PROCESS_AGENT
43 std::string arch_name
= "riscv";
45 if (features
.xlen
== 4)
46 arch_name
.append (":rv32i");
47 else if (features
.xlen
== 8)
48 arch_name
.append (":rv64i");
49 else if (features
.xlen
== 16)
50 arch_name
.append (":rv128i");
52 if (features
.flen
== 4)
53 arch_name
.append ("f");
54 else if (features
.flen
== 8)
55 arch_name
.append ("d");
56 else if (features
.flen
== 16)
57 arch_name
.append ("q");
59 set_tdesc_architecture (tdesc
, arch_name
.c_str ());
64 /* For now we only support creating 32-bit or 64-bit x-registers. */
65 if (features
.xlen
== 4)
66 regnum
= create_feature_riscv_32bit_cpu (tdesc
, regnum
);
67 else if (features
.xlen
== 8)
68 regnum
= create_feature_riscv_64bit_cpu (tdesc
, regnum
);
70 /* For now we only support creating 32-bit or 64-bit f-registers. */
71 if (features
.flen
== 4)
72 regnum
= create_feature_riscv_32bit_fpu (tdesc
, regnum
);
73 else if (features
.flen
== 8)
74 regnum
= create_feature_riscv_64bit_fpu (tdesc
, regnum
);
81 /* Wrapper used by std::unordered_map to generate hash for feature set. */
82 struct riscv_gdbarch_features_hasher
85 operator() (const riscv_gdbarch_features
&features
) const noexcept
87 return features
.hash ();
91 /* Cache of previously seen target descriptions, indexed by the feature set
93 static std::unordered_map
<riscv_gdbarch_features
,
95 riscv_gdbarch_features_hasher
> riscv_tdesc_cache
;
97 /* See arch/riscv.h. */
100 riscv_lookup_target_description (const struct riscv_gdbarch_features features
)
102 /* Lookup in the cache. */
103 const auto it
= riscv_tdesc_cache
.find (features
);
104 if (it
!= riscv_tdesc_cache
.end ())
107 target_desc
*tdesc
= riscv_create_target_description (features
);
109 /* Add to the cache. */
110 riscv_tdesc_cache
.emplace (features
, tdesc
);
115 #endif /* !GDBSERVER */