1 /* LoongArch definitions.
2 Copyright (C) 2021-2023 Free Software Foundation, Inc.
3 Contributed by Loongson Ltd.
4
5 This file is part of GCC.
6
7 GCC is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3, or (at your option)
10 any later version.
11
12 GCC is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING3. If not see
19 <http://www.gnu.org/licenses/>. */
20
21 /* Definition of standard codes for:
22 - base architecture types (isa_base),
23 - ISA extensions (isa_ext),
24 - base ABI types (abi_base),
25 - ABI extension types (abi_ext).
26
27 - code models (cmodel)
28 - other command-line switches (switch)
29
30 These values are primarily used for implementing option handling
31 logic in "loongarch.opt", "loongarch-driver.c" and "loongarch-opt.c".
32
33 As for the result of this option handling process, the following
34 scheme is adopted to represent the final configuration:
35
36 - The target ABI is encoded with a tuple (abi_base, abi_ext)
37 using the code defined below.
38
39 - The target ISA is encoded with a "struct loongarch_isa" defined
40 in loongarch-cpu.h.
41
42 - The target microarchitecture is represented with a cpu model
43 index defined in loongarch-cpu.h.
44 */
45
46 #ifndef LOONGARCH_DEF_H
47 #define LOONGARCH_DEF_H
48
49 #include "loongarch-tune.h"
50
51 #ifdef __cplusplus
52 extern "C" {
53 #endif
54
55 /* enum isa_base */
56 extern const char* loongarch_isa_base_strings[];
57 #define ISA_BASE_LA64V100 0
58 #define N_ISA_BASE_TYPES 1
59
60 /* enum isa_ext_* */
61 extern const char* loongarch_isa_ext_strings[];
62 #define ISA_EXT_NOFPU 0
63 #define ISA_EXT_FPU32 1
64 #define ISA_EXT_FPU64 2
65 #define N_ISA_EXT_FPU_TYPES 3
66 #define N_ISA_EXT_TYPES 3
67
68 /* enum abi_base */
69 extern const char* loongarch_abi_base_strings[];
70 #define ABI_BASE_LP64D 0
71 #define ABI_BASE_LP64F 1
72 #define ABI_BASE_LP64S 2
73 #define N_ABI_BASE_TYPES 3
74
75 /* enum abi_ext */
76 extern const char* loongarch_abi_ext_strings[];
77 #define ABI_EXT_BASE 0
78 #define N_ABI_EXT_TYPES 1
79
80 /* enum cmodel */
81 extern const char* loongarch_cmodel_strings[];
82 #define CMODEL_NORMAL 0
83 #define CMODEL_TINY 1
84 #define CMODEL_TINY_STATIC 2
85 #define CMODEL_MEDIUM 3
86 #define CMODEL_LARGE 4
87 #define CMODEL_EXTREME 5
88 #define N_CMODEL_TYPES 6
89
90 /* enum switches */
91 /* The "SW_" codes represent command-line switches (options that
92 accept no parameters). Definition for other switches that affects
93 the target ISA / ABI configuration will also be appended here
94 in the future. */
95
96 extern const char* loongarch_switch_strings[];
97 #define SW_SOFT_FLOAT 0
98 #define SW_SINGLE_FLOAT 1
99 #define SW_DOUBLE_FLOAT 2
100 #define N_SWITCH_TYPES 3
101
102 /* The common default value for variables whose assignments
103 are triggered by command-line options. */
104
105 #define M_OPTION_NOT_SEEN -1
106 #define M_OPT_ABSENT(opt_enum) ((opt_enum) == M_OPTION_NOT_SEEN)
107
108
109 /* Internal representation of the target. */
110 struct loongarch_isa
111 {
112 unsigned char base; /* ISA_BASE_ */
113 unsigned char fpu; /* ISA_EXT_FPU_ */
114 };
115
116 struct loongarch_abi
117 {
118 unsigned char base; /* ABI_BASE_ */
119 unsigned char ext; /* ABI_EXT_ */
120 };
121
122 struct loongarch_target
123 {
124 struct loongarch_isa isa;
125 struct loongarch_abi abi;
126 unsigned char cpu_arch; /* CPU_ */
127 unsigned char cpu_tune; /* same */
128 unsigned char cpu_native; /* same */
129 unsigned char cmodel; /* CMODEL_ */
130 };
131
132 /* CPU properties. */
133 /* index */
134 #define CPU_NATIVE 0
135 #define CPU_LOONGARCH64 1
136 #define CPU_LA464 2
137 #define N_ARCH_TYPES 3
138 #define N_TUNE_TYPES 3
139
140 /* parallel tables. */
141 extern const char* loongarch_cpu_strings[];
142 extern struct loongarch_isa loongarch_cpu_default_isa[];
143 extern int loongarch_cpu_issue_rate[];
144 extern int loongarch_cpu_multipass_dfa_lookahead[];
145
146 extern struct loongarch_cache loongarch_cpu_cache[];
147 extern struct loongarch_rtx_cost_data loongarch_cpu_rtx_cost_data[];
148
149 #ifdef __cplusplus
150 }
151 #endif
152 #endif /* LOONGARCH_DEF_H */