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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" | |
ba3814c1 | 13 | #include "regcache.h" |
d16005f8 PC |
14 | |
15 | #if ENABLE_THREADED_COMPILER | |
16 | #include <stdatomic.h> | |
17 | #endif | |
18 | ||
19 | #define ARRAY_SIZE(x) (sizeof(x) ? sizeof(x) / sizeof((x)[0]) : 0) | |
d16005f8 PC |
20 | |
21 | #ifdef __GNUC__ | |
22 | # define likely(x) __builtin_expect(!!(x),1) | |
23 | # define unlikely(x) __builtin_expect(!!(x),0) | |
24 | #else | |
25 | # define likely(x) (x) | |
26 | # define unlikely(x) (x) | |
27 | #endif | |
28 | ||
29 | #if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ | |
30 | # define LE32TOH(x) __builtin_bswap32(x) | |
31 | # define HTOLE32(x) __builtin_bswap32(x) | |
32 | # define LE16TOH(x) __builtin_bswap16(x) | |
33 | # define HTOLE16(x) __builtin_bswap16(x) | |
34 | #else | |
35 | # define LE32TOH(x) (x) | |
36 | # define HTOLE32(x) (x) | |
37 | # define LE16TOH(x) (x) | |
38 | # define HTOLE16(x) (x) | |
39 | #endif | |
40 | ||
98fa08a5 PC |
41 | #if HAS_DEFAULT_ELM |
42 | #define SET_DEFAULT_ELM(table, value) [0 ... ARRAY_SIZE(table) - 1] = value | |
43 | #else | |
44 | #define SET_DEFAULT_ELM(table, value) [0] = NULL | |
45 | #endif | |
46 | ||
d8b04acd PC |
47 | #define fallthrough do {} while (0) /* fall-through */ |
48 | ||
ba3814c1 PC |
49 | #define container_of(ptr, type, member) \ |
50 | ((type *)((void *)(ptr) - offsetof(type, member))) | |
51 | ||
52 | #ifdef _MSC_BUILD | |
53 | # define popcount32(x) __popcnt(x) | |
54 | # define ffs32(x) (31 - __lzcnt(x)) | |
55 | #else | |
56 | # define popcount32(x) __builtin_popcount(x) | |
57 | # define ffs32(x) (__builtin_ffs(x) - 1) | |
58 | #endif | |
59 | ||
d16005f8 PC |
60 | /* Flags for (struct block *)->flags */ |
61 | #define BLOCK_NEVER_COMPILE BIT(0) | |
62 | #define BLOCK_SHOULD_RECOMPILE BIT(1) | |
63 | #define BLOCK_FULLY_TAGGED BIT(2) | |
a59e5536 | 64 | #define BLOCK_IS_DEAD BIT(3) |
98fa08a5 | 65 | #define BLOCK_IS_MEMSET BIT(4) |
ba3814c1 | 66 | #define BLOCK_NO_OPCODE_LIST BIT(5) |
d16005f8 PC |
67 | |
68 | #define RAM_SIZE 0x200000 | |
69 | #define BIOS_SIZE 0x80000 | |
70 | ||
71 | #define CODE_LUT_SIZE ((RAM_SIZE + BIOS_SIZE) >> 2) | |
72 | ||
98fa08a5 PC |
73 | #define REG_LO 32 |
74 | #define REG_HI 33 | |
75 | ||
d16005f8 PC |
76 | /* Definition of jit_state_t (avoids inclusion of <lightning.h>) */ |
77 | struct jit_node; | |
78 | struct jit_state; | |
79 | typedef struct jit_state jit_state_t; | |
80 | ||
81 | struct blockcache; | |
82 | struct recompiler; | |
83 | struct regcache; | |
84 | struct opcode; | |
a59e5536 | 85 | struct reaper; |
d16005f8 | 86 | |
11357fef PC |
87 | struct u16x2 { |
88 | #if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ | |
89 | u16 h, l; | |
90 | #else | |
91 | u16 l, h; | |
92 | #endif | |
93 | }; | |
94 | ||
d16005f8 PC |
95 | struct block { |
96 | jit_state_t *_jit; | |
d16005f8 PC |
97 | struct opcode *opcode_list; |
98 | void (*function)(void); | |
98fa08a5 PC |
99 | const u32 *code; |
100 | struct block *next; | |
d16005f8 PC |
101 | u32 pc; |
102 | u32 hash; | |
d8b04acd | 103 | u32 precompile_date; |
98fa08a5 PC |
104 | unsigned int code_size; |
105 | u16 nb_ops; | |
d16005f8 | 106 | #if ENABLE_THREADED_COMPILER |
ba3814c1 PC |
107 | _Atomic u8 flags; |
108 | #else | |
109 | u8 flags; | |
d16005f8 | 110 | #endif |
d16005f8 PC |
111 | }; |
112 | ||
113 | struct lightrec_branch { | |
114 | struct jit_node *branch; | |
115 | u32 target; | |
116 | }; | |
117 | ||
118 | struct lightrec_branch_target { | |
119 | struct jit_node *label; | |
120 | u32 offset; | |
121 | }; | |
122 | ||
98fa08a5 PC |
123 | enum c_wrappers { |
124 | C_WRAPPER_RW, | |
125 | C_WRAPPER_RW_GENERIC, | |
98fa08a5 PC |
126 | C_WRAPPER_MTC, |
127 | C_WRAPPER_CP, | |
98fa08a5 PC |
128 | C_WRAPPERS_COUNT, |
129 | }; | |
130 | ||
131 | struct lightrec_cstate { | |
132 | struct lightrec_state *state; | |
133 | ||
d16005f8 PC |
134 | struct lightrec_branch local_branches[512]; |
135 | struct lightrec_branch_target targets[512]; | |
d16005f8 PC |
136 | unsigned int nb_local_branches; |
137 | unsigned int nb_targets; | |
98fa08a5 PC |
138 | unsigned int cycles; |
139 | ||
140 | struct regcache *reg_cache; | |
141 | }; | |
142 | ||
143 | struct lightrec_state { | |
144 | struct lightrec_registers regs; | |
ba3814c1 | 145 | uintptr_t wrapper_regs[NUM_TEMPS]; |
98fa08a5 PC |
146 | u32 next_pc; |
147 | u32 current_cycle; | |
148 | u32 target_cycle; | |
149 | u32 exit_flags; | |
150 | u32 old_cycle_counter; | |
151 | struct block *dispatcher, *c_wrapper_block; | |
fd58fa32 PC |
152 | void *c_wrappers[C_WRAPPERS_COUNT]; |
153 | void *wrappers_eps[C_WRAPPERS_COUNT]; | |
d16005f8 | 154 | struct blockcache *block_cache; |
d16005f8 | 155 | struct recompiler *rec; |
98fa08a5 | 156 | struct lightrec_cstate *cstate; |
a59e5536 | 157 | struct reaper *reaper; |
02487de7 | 158 | void *tlsf; |
d16005f8 | 159 | void (*eob_wrapper_func)(void); |
98fa08a5 | 160 | void (*memset_func)(void); |
d16005f8 PC |
161 | void (*get_next_block)(void); |
162 | struct lightrec_ops ops; | |
a59e5536 | 163 | unsigned int nb_precompile; |
d16005f8 PC |
164 | unsigned int nb_maps; |
165 | const struct lightrec_mem_map *maps; | |
ba3814c1 | 166 | uintptr_t offset_ram, offset_bios, offset_scratch, offset_io; |
02487de7 | 167 | _Bool with_32bit_lut; |
d16005f8 PC |
168 | _Bool mirrors_mapped; |
169 | _Bool invalidate_from_dma_only; | |
170 | void *code_lut[]; | |
171 | }; | |
172 | ||
173 | u32 lightrec_rw(struct lightrec_state *state, union code op, | |
03535202 | 174 | u32 addr, u32 data, u32 *flags, |
98fa08a5 | 175 | struct block *block); |
d16005f8 | 176 | |
98fa08a5 | 177 | void lightrec_free_block(struct lightrec_state *state, struct block *block); |
d16005f8 PC |
178 | |
179 | void remove_from_code_lut(struct blockcache *cache, struct block *block); | |
180 | ||
02487de7 PC |
181 | enum psx_map |
182 | lightrec_get_map_idx(struct lightrec_state *state, u32 kaddr); | |
183 | ||
98fa08a5 PC |
184 | const struct lightrec_mem_map * |
185 | lightrec_get_map(struct lightrec_state *state, void **host, u32 kaddr); | |
186 | ||
d16005f8 PC |
187 | static inline u32 kunseg(u32 addr) |
188 | { | |
189 | if (unlikely(addr >= 0xa0000000)) | |
190 | return addr - 0xa0000000; | |
191 | else | |
192 | return addr &~ 0x80000000; | |
193 | } | |
194 | ||
195 | static inline u32 lut_offset(u32 pc) | |
196 | { | |
197 | if (pc & BIT(28)) | |
198 | return ((pc & (BIOS_SIZE - 1)) + RAM_SIZE) >> 2; // BIOS | |
199 | else | |
200 | return (pc & (RAM_SIZE - 1)) >> 2; // RAM | |
201 | } | |
202 | ||
02487de7 PC |
203 | static inline _Bool is_big_endian(void) |
204 | { | |
205 | return __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__; | |
206 | } | |
207 | ||
208 | static inline _Bool lut_is_32bit(const struct lightrec_state *state) | |
209 | { | |
210 | return __WORDSIZE == 32 || | |
211 | (ENABLE_CODE_BUFFER && state->with_32bit_lut); | |
212 | } | |
213 | ||
214 | static inline size_t lut_elm_size(const struct lightrec_state *state) | |
215 | { | |
216 | return lut_is_32bit(state) ? 4 : sizeof(void *); | |
217 | } | |
218 | ||
219 | static inline void ** lut_address(struct lightrec_state *state, u32 offset) | |
220 | { | |
221 | if (lut_is_32bit(state)) | |
222 | return (void **) ((uintptr_t) state->code_lut + offset * 4); | |
223 | else | |
224 | return &state->code_lut[offset]; | |
225 | } | |
226 | ||
227 | static inline void * lut_read(struct lightrec_state *state, u32 offset) | |
228 | { | |
d8b04acd | 229 | void **lut_entry = lut_address(state, offset); |
02487de7 PC |
230 | |
231 | if (lut_is_32bit(state)) | |
232 | return (void *)(uintptr_t) *(u32 *) lut_entry; | |
233 | else | |
234 | return *lut_entry; | |
235 | } | |
236 | ||
237 | static inline void lut_write(struct lightrec_state *state, u32 offset, void *ptr) | |
238 | { | |
239 | void **lut_entry = lut_address(state, offset); | |
240 | ||
241 | if (lut_is_32bit(state)) | |
242 | *(u32 *) lut_entry = (u32)(uintptr_t) ptr; | |
243 | else | |
244 | *lut_entry = ptr; | |
245 | } | |
246 | ||
98fa08a5 PC |
247 | static inline u32 get_ds_pc(const struct block *block, u16 offset, s16 imm) |
248 | { | |
249 | u16 flags = block->opcode_list[offset].flags; | |
250 | ||
03535202 | 251 | offset += op_flag_no_ds(flags); |
98fa08a5 PC |
252 | |
253 | return block->pc + (offset + imm << 2); | |
254 | } | |
255 | ||
256 | static inline u32 get_branch_pc(const struct block *block, u16 offset, s16 imm) | |
257 | { | |
258 | u16 flags = block->opcode_list[offset].flags; | |
259 | ||
03535202 | 260 | offset -= op_flag_no_ds(flags); |
98fa08a5 PC |
261 | |
262 | return block->pc + (offset + imm << 2); | |
263 | } | |
264 | ||
d16005f8 PC |
265 | void lightrec_mtc(struct lightrec_state *state, union code op, u32 data); |
266 | u32 lightrec_mfc(struct lightrec_state *state, union code op); | |
98fa08a5 PC |
267 | void lightrec_rfe(struct lightrec_state *state); |
268 | void lightrec_cp(struct lightrec_state *state, union code op); | |
269 | ||
270 | struct lightrec_cstate * lightrec_create_cstate(struct lightrec_state *state); | |
271 | void lightrec_free_cstate(struct lightrec_cstate *cstate); | |
d16005f8 PC |
272 | |
273 | union code lightrec_read_opcode(struct lightrec_state *state, u32 pc); | |
274 | ||
98fa08a5 | 275 | int lightrec_compile_block(struct lightrec_cstate *cstate, struct block *block); |
ba3814c1 PC |
276 | void lightrec_free_opcode_list(struct lightrec_state *state, |
277 | struct opcode *list); | |
98fa08a5 PC |
278 | |
279 | unsigned int lightrec_cycles_of_opcode(union code code); | |
280 | ||
281 | static inline u8 get_mult_div_lo(union code c) | |
282 | { | |
283 | return (OPT_FLAG_MULT_DIV && c.r.rd) ? c.r.rd : REG_LO; | |
284 | } | |
285 | ||
286 | static inline u8 get_mult_div_hi(union code c) | |
287 | { | |
288 | return (OPT_FLAG_MULT_DIV && c.r.imm) ? c.r.imm : REG_HI; | |
289 | } | |
d16005f8 | 290 | |
03535202 PC |
291 | static inline s16 s16_max(s16 a, s16 b) |
292 | { | |
293 | return a > b ? a : b; | |
294 | } | |
295 | ||
ba3814c1 PC |
296 | static inline _Bool block_has_flag(struct block *block, u8 flag) |
297 | { | |
298 | #if ENABLE_THREADED_COMPILER | |
299 | return atomic_load_explicit(&block->flags, memory_order_relaxed) & flag; | |
300 | #else | |
301 | return block->flags & flag; | |
302 | #endif | |
303 | } | |
304 | ||
305 | static inline u8 block_set_flags(struct block *block, u8 mask) | |
306 | { | |
307 | #if ENABLE_THREADED_COMPILER | |
308 | return atomic_fetch_or_explicit(&block->flags, mask, | |
309 | memory_order_relaxed); | |
310 | #else | |
311 | u8 flags = block->flags; | |
312 | ||
313 | block->flags |= mask; | |
314 | ||
315 | return flags; | |
316 | #endif | |
317 | } | |
318 | ||
319 | static inline u8 block_clear_flags(struct block *block, u8 mask) | |
320 | { | |
321 | #if ENABLE_THREADED_COMPILER | |
322 | return atomic_fetch_and_explicit(&block->flags, ~mask, | |
323 | memory_order_relaxed); | |
324 | #else | |
325 | u8 flags = block->flags; | |
326 | ||
327 | block->flags &= ~mask; | |
328 | ||
329 | return flags; | |
330 | #endif | |
331 | } | |
332 | ||
d16005f8 | 333 | #endif /* __LIGHTREC_PRIVATE_H__ */ |