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98fa08a5 | 1 | /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
d16005f8 | 2 | /* |
98fa08a5 | 3 | * Copyright (C) 2016-2021 Paul Cercueil <paul@crapouillou.net> |
d16005f8 PC |
4 | */ |
5 | ||
6 | #ifndef __LIGHTREC_PRIVATE_H__ | |
7 | #define __LIGHTREC_PRIVATE_H__ | |
8 | ||
02487de7 | 9 | #include "lightning-wrapper.h" |
98fa08a5 | 10 | #include "lightrec-config.h" |
d16005f8 PC |
11 | #include "disassembler.h" |
12 | #include "lightrec.h" | |
13 | ||
14 | #if ENABLE_THREADED_COMPILER | |
15 | #include <stdatomic.h> | |
16 | #endif | |
17 | ||
18 | #define ARRAY_SIZE(x) (sizeof(x) ? sizeof(x) / sizeof((x)[0]) : 0) | |
d16005f8 PC |
19 | |
20 | #ifdef __GNUC__ | |
21 | # define likely(x) __builtin_expect(!!(x),1) | |
22 | # define unlikely(x) __builtin_expect(!!(x),0) | |
23 | #else | |
24 | # define likely(x) (x) | |
25 | # define unlikely(x) (x) | |
26 | #endif | |
27 | ||
28 | #if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ | |
29 | # define LE32TOH(x) __builtin_bswap32(x) | |
30 | # define HTOLE32(x) __builtin_bswap32(x) | |
31 | # define LE16TOH(x) __builtin_bswap16(x) | |
32 | # define HTOLE16(x) __builtin_bswap16(x) | |
33 | #else | |
34 | # define LE32TOH(x) (x) | |
35 | # define HTOLE32(x) (x) | |
36 | # define LE16TOH(x) (x) | |
37 | # define HTOLE16(x) (x) | |
38 | #endif | |
39 | ||
98fa08a5 PC |
40 | #if HAS_DEFAULT_ELM |
41 | #define SET_DEFAULT_ELM(table, value) [0 ... ARRAY_SIZE(table) - 1] = value | |
42 | #else | |
43 | #define SET_DEFAULT_ELM(table, value) [0] = NULL | |
44 | #endif | |
45 | ||
d8b04acd PC |
46 | #define fallthrough do {} while (0) /* fall-through */ |
47 | ||
d16005f8 PC |
48 | /* Flags for (struct block *)->flags */ |
49 | #define BLOCK_NEVER_COMPILE BIT(0) | |
50 | #define BLOCK_SHOULD_RECOMPILE BIT(1) | |
51 | #define BLOCK_FULLY_TAGGED BIT(2) | |
a59e5536 | 52 | #define BLOCK_IS_DEAD BIT(3) |
98fa08a5 | 53 | #define BLOCK_IS_MEMSET BIT(4) |
d16005f8 PC |
54 | |
55 | #define RAM_SIZE 0x200000 | |
56 | #define BIOS_SIZE 0x80000 | |
57 | ||
58 | #define CODE_LUT_SIZE ((RAM_SIZE + BIOS_SIZE) >> 2) | |
59 | ||
98fa08a5 PC |
60 | #define REG_LO 32 |
61 | #define REG_HI 33 | |
62 | ||
d16005f8 PC |
63 | /* Definition of jit_state_t (avoids inclusion of <lightning.h>) */ |
64 | struct jit_node; | |
65 | struct jit_state; | |
66 | typedef struct jit_state jit_state_t; | |
67 | ||
68 | struct blockcache; | |
69 | struct recompiler; | |
70 | struct regcache; | |
71 | struct opcode; | |
a59e5536 | 72 | struct reaper; |
d16005f8 PC |
73 | |
74 | struct block { | |
75 | jit_state_t *_jit; | |
d16005f8 PC |
76 | struct opcode *opcode_list; |
77 | void (*function)(void); | |
98fa08a5 PC |
78 | const u32 *code; |
79 | struct block *next; | |
d16005f8 PC |
80 | u32 pc; |
81 | u32 hash; | |
d8b04acd | 82 | u32 precompile_date; |
98fa08a5 PC |
83 | unsigned int code_size; |
84 | u16 nb_ops; | |
85 | u8 flags; | |
d16005f8 PC |
86 | #if ENABLE_THREADED_COMPILER |
87 | atomic_flag op_list_freed; | |
88 | #endif | |
d16005f8 PC |
89 | }; |
90 | ||
91 | struct lightrec_branch { | |
92 | struct jit_node *branch; | |
93 | u32 target; | |
94 | }; | |
95 | ||
96 | struct lightrec_branch_target { | |
97 | struct jit_node *label; | |
98 | u32 offset; | |
99 | }; | |
100 | ||
98fa08a5 PC |
101 | enum c_wrappers { |
102 | C_WRAPPER_RW, | |
103 | C_WRAPPER_RW_GENERIC, | |
98fa08a5 PC |
104 | C_WRAPPER_MTC, |
105 | C_WRAPPER_CP, | |
106 | C_WRAPPER_SYSCALL, | |
107 | C_WRAPPER_BREAK, | |
108 | C_WRAPPERS_COUNT, | |
109 | }; | |
110 | ||
111 | struct lightrec_cstate { | |
112 | struct lightrec_state *state; | |
113 | ||
d16005f8 PC |
114 | struct jit_node *branches[512]; |
115 | struct lightrec_branch local_branches[512]; | |
116 | struct lightrec_branch_target targets[512]; | |
117 | unsigned int nb_branches; | |
118 | unsigned int nb_local_branches; | |
119 | unsigned int nb_targets; | |
98fa08a5 PC |
120 | unsigned int cycles; |
121 | ||
122 | struct regcache *reg_cache; | |
123 | }; | |
124 | ||
125 | struct lightrec_state { | |
126 | struct lightrec_registers regs; | |
127 | u32 next_pc; | |
128 | u32 current_cycle; | |
129 | u32 target_cycle; | |
130 | u32 exit_flags; | |
131 | u32 old_cycle_counter; | |
22eee2ac | 132 | u32 c_wrapper_arg; |
98fa08a5 | 133 | struct block *dispatcher, *c_wrapper_block; |
fd58fa32 PC |
134 | void *c_wrappers[C_WRAPPERS_COUNT]; |
135 | void *wrappers_eps[C_WRAPPERS_COUNT]; | |
d16005f8 | 136 | struct blockcache *block_cache; |
d16005f8 | 137 | struct recompiler *rec; |
98fa08a5 | 138 | struct lightrec_cstate *cstate; |
a59e5536 | 139 | struct reaper *reaper; |
02487de7 | 140 | void *tlsf; |
d16005f8 | 141 | void (*eob_wrapper_func)(void); |
98fa08a5 | 142 | void (*memset_func)(void); |
d16005f8 PC |
143 | void (*get_next_block)(void); |
144 | struct lightrec_ops ops; | |
a59e5536 | 145 | unsigned int nb_precompile; |
d16005f8 PC |
146 | unsigned int nb_maps; |
147 | const struct lightrec_mem_map *maps; | |
148 | uintptr_t offset_ram, offset_bios, offset_scratch; | |
02487de7 | 149 | _Bool with_32bit_lut; |
d16005f8 PC |
150 | _Bool mirrors_mapped; |
151 | _Bool invalidate_from_dma_only; | |
152 | void *code_lut[]; | |
153 | }; | |
154 | ||
155 | u32 lightrec_rw(struct lightrec_state *state, union code op, | |
98fa08a5 PC |
156 | u32 addr, u32 data, u16 *flags, |
157 | struct block *block); | |
d16005f8 | 158 | |
98fa08a5 | 159 | void lightrec_free_block(struct lightrec_state *state, struct block *block); |
d16005f8 PC |
160 | |
161 | void remove_from_code_lut(struct blockcache *cache, struct block *block); | |
162 | ||
02487de7 PC |
163 | enum psx_map |
164 | lightrec_get_map_idx(struct lightrec_state *state, u32 kaddr); | |
165 | ||
98fa08a5 PC |
166 | const struct lightrec_mem_map * |
167 | lightrec_get_map(struct lightrec_state *state, void **host, u32 kaddr); | |
168 | ||
d16005f8 PC |
169 | static inline u32 kunseg(u32 addr) |
170 | { | |
171 | if (unlikely(addr >= 0xa0000000)) | |
172 | return addr - 0xa0000000; | |
173 | else | |
174 | return addr &~ 0x80000000; | |
175 | } | |
176 | ||
177 | static inline u32 lut_offset(u32 pc) | |
178 | { | |
179 | if (pc & BIT(28)) | |
180 | return ((pc & (BIOS_SIZE - 1)) + RAM_SIZE) >> 2; // BIOS | |
181 | else | |
182 | return (pc & (RAM_SIZE - 1)) >> 2; // RAM | |
183 | } | |
184 | ||
02487de7 PC |
185 | static inline _Bool is_big_endian(void) |
186 | { | |
187 | return __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__; | |
188 | } | |
189 | ||
190 | static inline _Bool lut_is_32bit(const struct lightrec_state *state) | |
191 | { | |
192 | return __WORDSIZE == 32 || | |
193 | (ENABLE_CODE_BUFFER && state->with_32bit_lut); | |
194 | } | |
195 | ||
196 | static inline size_t lut_elm_size(const struct lightrec_state *state) | |
197 | { | |
198 | return lut_is_32bit(state) ? 4 : sizeof(void *); | |
199 | } | |
200 | ||
201 | static inline void ** lut_address(struct lightrec_state *state, u32 offset) | |
202 | { | |
203 | if (lut_is_32bit(state)) | |
204 | return (void **) ((uintptr_t) state->code_lut + offset * 4); | |
205 | else | |
206 | return &state->code_lut[offset]; | |
207 | } | |
208 | ||
209 | static inline void * lut_read(struct lightrec_state *state, u32 offset) | |
210 | { | |
d8b04acd | 211 | void **lut_entry = lut_address(state, offset); |
02487de7 PC |
212 | |
213 | if (lut_is_32bit(state)) | |
214 | return (void *)(uintptr_t) *(u32 *) lut_entry; | |
215 | else | |
216 | return *lut_entry; | |
217 | } | |
218 | ||
219 | static inline void lut_write(struct lightrec_state *state, u32 offset, void *ptr) | |
220 | { | |
221 | void **lut_entry = lut_address(state, offset); | |
222 | ||
223 | if (lut_is_32bit(state)) | |
224 | *(u32 *) lut_entry = (u32)(uintptr_t) ptr; | |
225 | else | |
226 | *lut_entry = ptr; | |
227 | } | |
228 | ||
98fa08a5 PC |
229 | static inline u32 get_ds_pc(const struct block *block, u16 offset, s16 imm) |
230 | { | |
231 | u16 flags = block->opcode_list[offset].flags; | |
232 | ||
233 | offset += !!(OPT_SWITCH_DELAY_SLOTS && (flags & LIGHTREC_NO_DS)); | |
234 | ||
235 | return block->pc + (offset + imm << 2); | |
236 | } | |
237 | ||
238 | static inline u32 get_branch_pc(const struct block *block, u16 offset, s16 imm) | |
239 | { | |
240 | u16 flags = block->opcode_list[offset].flags; | |
241 | ||
242 | offset -= !!(OPT_SWITCH_DELAY_SLOTS && (flags & LIGHTREC_NO_DS)); | |
243 | ||
244 | return block->pc + (offset + imm << 2); | |
245 | } | |
246 | ||
d16005f8 PC |
247 | void lightrec_mtc(struct lightrec_state *state, union code op, u32 data); |
248 | u32 lightrec_mfc(struct lightrec_state *state, union code op); | |
98fa08a5 PC |
249 | void lightrec_rfe(struct lightrec_state *state); |
250 | void lightrec_cp(struct lightrec_state *state, union code op); | |
251 | ||
252 | struct lightrec_cstate * lightrec_create_cstate(struct lightrec_state *state); | |
253 | void lightrec_free_cstate(struct lightrec_cstate *cstate); | |
d16005f8 PC |
254 | |
255 | union code lightrec_read_opcode(struct lightrec_state *state, u32 pc); | |
256 | ||
257 | struct block * lightrec_get_block(struct lightrec_state *state, u32 pc); | |
98fa08a5 PC |
258 | int lightrec_compile_block(struct lightrec_cstate *cstate, struct block *block); |
259 | void lightrec_free_opcode_list(struct lightrec_state *state, struct block *block); | |
260 | ||
261 | unsigned int lightrec_cycles_of_opcode(union code code); | |
262 | ||
263 | static inline u8 get_mult_div_lo(union code c) | |
264 | { | |
265 | return (OPT_FLAG_MULT_DIV && c.r.rd) ? c.r.rd : REG_LO; | |
266 | } | |
267 | ||
268 | static inline u8 get_mult_div_hi(union code c) | |
269 | { | |
270 | return (OPT_FLAG_MULT_DIV && c.r.imm) ? c.r.imm : REG_HI; | |
271 | } | |
d16005f8 PC |
272 | |
273 | #endif /* __LIGHTREC_PRIVATE_H__ */ |