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98fa08a5 | 1 | // SPDX-License-Identifier: LGPL-2.1-or-later |
d16005f8 | 2 | /* |
98fa08a5 | 3 | * Copyright (C) 2014-2021 Paul Cercueil <paul@crapouillou.net> |
d16005f8 PC |
4 | */ |
5 | ||
6 | #include "blockcache.h" | |
d16005f8 PC |
7 | #include "debug.h" |
8 | #include "disassembler.h" | |
9 | #include "emitter.h" | |
10 | #include "interpreter.h" | |
98fa08a5 PC |
11 | #include "lightrec-config.h" |
12 | #include "lightning-wrapper.h" | |
d16005f8 PC |
13 | #include "lightrec.h" |
14 | #include "memmanager.h" | |
a59e5536 | 15 | #include "reaper.h" |
d16005f8 PC |
16 | #include "recompiler.h" |
17 | #include "regcache.h" | |
18 | #include "optimizer.h" | |
02487de7 | 19 | #include "tlsf/tlsf.h" |
d16005f8 PC |
20 | |
21 | #include <errno.h> | |
98fa08a5 | 22 | #include <inttypes.h> |
d16005f8 PC |
23 | #include <limits.h> |
24 | #if ENABLE_THREADED_COMPILER | |
25 | #include <stdatomic.h> | |
26 | #endif | |
27 | #include <stdbool.h> | |
28 | #include <stddef.h> | |
29 | #include <string.h> | |
d16005f8 PC |
30 | |
31 | #define GENMASK(h, l) \ | |
32 | (((uintptr_t)-1 << (l)) & ((uintptr_t)-1 >> (__WORDSIZE - 1 - (h)))) | |
33 | ||
34 | static struct block * lightrec_precompile_block(struct lightrec_state *state, | |
35 | u32 pc); | |
98fa08a5 PC |
36 | static bool lightrec_block_is_fully_tagged(const struct block *block); |
37 | ||
38 | static void lightrec_mtc2(struct lightrec_state *state, u8 reg, u32 data); | |
39 | static u32 lightrec_mfc2(struct lightrec_state *state, u8 reg); | |
d16005f8 | 40 | |
a59e5536 | 41 | static void lightrec_default_sb(struct lightrec_state *state, u32 opcode, |
42 | void *host, u32 addr, u8 data) | |
43 | { | |
44 | *(u8 *)host = data; | |
45 | ||
46 | if (!state->invalidate_from_dma_only) | |
47 | lightrec_invalidate(state, addr, 1); | |
48 | } | |
49 | ||
50 | static void lightrec_default_sh(struct lightrec_state *state, u32 opcode, | |
51 | void *host, u32 addr, u16 data) | |
52 | { | |
53 | *(u16 *)host = HTOLE16(data); | |
54 | ||
55 | if (!state->invalidate_from_dma_only) | |
56 | lightrec_invalidate(state, addr, 2); | |
57 | } | |
58 | ||
59 | static void lightrec_default_sw(struct lightrec_state *state, u32 opcode, | |
60 | void *host, u32 addr, u32 data) | |
61 | { | |
62 | *(u32 *)host = HTOLE32(data); | |
63 | ||
64 | if (!state->invalidate_from_dma_only) | |
65 | lightrec_invalidate(state, addr, 4); | |
66 | } | |
67 | ||
68 | static u8 lightrec_default_lb(struct lightrec_state *state, | |
69 | u32 opcode, void *host, u32 addr) | |
70 | { | |
71 | return *(u8 *)host; | |
72 | } | |
73 | ||
74 | static u16 lightrec_default_lh(struct lightrec_state *state, | |
75 | u32 opcode, void *host, u32 addr) | |
76 | { | |
77 | return LE16TOH(*(u16 *)host); | |
78 | } | |
79 | ||
80 | static u32 lightrec_default_lw(struct lightrec_state *state, | |
81 | u32 opcode, void *host, u32 addr) | |
82 | { | |
83 | return LE32TOH(*(u32 *)host); | |
84 | } | |
85 | ||
86 | static const struct lightrec_mem_map_ops lightrec_default_ops = { | |
87 | .sb = lightrec_default_sb, | |
88 | .sh = lightrec_default_sh, | |
89 | .sw = lightrec_default_sw, | |
90 | .lb = lightrec_default_lb, | |
91 | .lh = lightrec_default_lh, | |
92 | .lw = lightrec_default_lw, | |
93 | }; | |
94 | ||
98fa08a5 PC |
95 | static void __segfault_cb(struct lightrec_state *state, u32 addr, |
96 | const struct block *block) | |
d16005f8 PC |
97 | { |
98 | lightrec_set_exit_flags(state, LIGHTREC_EXIT_SEGFAULT); | |
99 | pr_err("Segmentation fault in recompiled code: invalid " | |
100 | "load/store at address 0x%08x\n", addr); | |
98fa08a5 PC |
101 | if (block) |
102 | pr_err("Was executing block PC 0x%08x\n", block->pc); | |
d16005f8 PC |
103 | } |
104 | ||
a59e5536 | 105 | static void lightrec_swl(struct lightrec_state *state, |
106 | const struct lightrec_mem_map_ops *ops, | |
107 | u32 opcode, void *host, u32 addr, u32 data) | |
d16005f8 | 108 | { |
a59e5536 | 109 | unsigned int shift = addr & 0x3; |
110 | unsigned int mask = GENMASK(31, (shift + 1) * 8); | |
111 | u32 old_data; | |
112 | ||
113 | /* Align to 32 bits */ | |
114 | addr &= ~3; | |
115 | host = (void *)((uintptr_t)host & ~3); | |
116 | ||
117 | old_data = ops->lw(state, opcode, host, addr); | |
118 | ||
119 | data = (data >> ((3 - shift) * 8)) | (old_data & mask); | |
120 | ||
121 | ops->sw(state, opcode, host, addr, data); | |
122 | } | |
123 | ||
124 | static void lightrec_swr(struct lightrec_state *state, | |
125 | const struct lightrec_mem_map_ops *ops, | |
126 | u32 opcode, void *host, u32 addr, u32 data) | |
127 | { | |
128 | unsigned int shift = addr & 0x3; | |
129 | unsigned int mask = (1 << (shift * 8)) - 1; | |
130 | u32 old_data; | |
131 | ||
132 | /* Align to 32 bits */ | |
133 | addr &= ~3; | |
134 | host = (void *)((uintptr_t)host & ~3); | |
135 | ||
136 | old_data = ops->lw(state, opcode, host, addr); | |
137 | ||
138 | data = (data << (shift * 8)) | (old_data & mask); | |
139 | ||
140 | ops->sw(state, opcode, host, addr, data); | |
141 | } | |
142 | ||
143 | static void lightrec_swc2(struct lightrec_state *state, union code op, | |
144 | const struct lightrec_mem_map_ops *ops, | |
145 | void *host, u32 addr) | |
146 | { | |
98fa08a5 | 147 | u32 data = lightrec_mfc2(state, op.i.rt); |
a59e5536 | 148 | |
149 | ops->sw(state, op.opcode, host, addr, data); | |
150 | } | |
151 | ||
152 | static u32 lightrec_lwl(struct lightrec_state *state, | |
153 | const struct lightrec_mem_map_ops *ops, | |
154 | u32 opcode, void *host, u32 addr, u32 data) | |
155 | { | |
156 | unsigned int shift = addr & 0x3; | |
157 | unsigned int mask = (1 << (24 - shift * 8)) - 1; | |
158 | u32 old_data; | |
159 | ||
160 | /* Align to 32 bits */ | |
161 | addr &= ~3; | |
162 | host = (void *)((uintptr_t)host & ~3); | |
163 | ||
164 | old_data = ops->lw(state, opcode, host, addr); | |
165 | ||
166 | return (data & mask) | (old_data << (24 - shift * 8)); | |
167 | } | |
168 | ||
169 | static u32 lightrec_lwr(struct lightrec_state *state, | |
170 | const struct lightrec_mem_map_ops *ops, | |
171 | u32 opcode, void *host, u32 addr, u32 data) | |
172 | { | |
173 | unsigned int shift = addr & 0x3; | |
174 | unsigned int mask = GENMASK(31, 32 - shift * 8); | |
175 | u32 old_data; | |
176 | ||
177 | /* Align to 32 bits */ | |
178 | addr &= ~3; | |
179 | host = (void *)((uintptr_t)host & ~3); | |
180 | ||
181 | old_data = ops->lw(state, opcode, host, addr); | |
182 | ||
183 | return (data & mask) | (old_data >> (shift * 8)); | |
184 | } | |
185 | ||
186 | static void lightrec_lwc2(struct lightrec_state *state, union code op, | |
187 | const struct lightrec_mem_map_ops *ops, | |
188 | void *host, u32 addr) | |
189 | { | |
190 | u32 data = ops->lw(state, op.opcode, host, addr); | |
191 | ||
98fa08a5 | 192 | lightrec_mtc2(state, op.i.rt, data); |
d16005f8 PC |
193 | } |
194 | ||
195 | static void lightrec_invalidate_map(struct lightrec_state *state, | |
98fa08a5 | 196 | const struct lightrec_mem_map *map, u32 addr, u32 len) |
d16005f8 | 197 | { |
98fa08a5 | 198 | if (map == &state->maps[PSX_MAP_KERNEL_USER_RAM]) { |
02487de7 PC |
199 | memset(lut_address(state, lut_offset(addr)), 0, |
200 | ((len + 3) / 4) * lut_elm_size(state)); | |
98fa08a5 | 201 | } |
d16005f8 PC |
202 | } |
203 | ||
02487de7 PC |
204 | enum psx_map |
205 | lightrec_get_map_idx(struct lightrec_state *state, u32 kaddr) | |
d16005f8 | 206 | { |
98fa08a5 | 207 | const struct lightrec_mem_map *map; |
d16005f8 PC |
208 | unsigned int i; |
209 | ||
210 | for (i = 0; i < state->nb_maps; i++) { | |
02487de7 | 211 | map = &state->maps[i]; |
d16005f8 | 212 | |
02487de7 PC |
213 | if (kaddr >= map->pc && kaddr < map->pc + map->length) |
214 | return (enum psx_map) i; | |
d16005f8 PC |
215 | } |
216 | ||
02487de7 PC |
217 | return PSX_MAP_UNKNOWN; |
218 | } | |
219 | ||
220 | const struct lightrec_mem_map * | |
221 | lightrec_get_map(struct lightrec_state *state, void **host, u32 kaddr) | |
222 | { | |
223 | const struct lightrec_mem_map *map; | |
224 | enum psx_map idx; | |
225 | u32 addr; | |
226 | ||
227 | idx = lightrec_get_map_idx(state, kaddr); | |
228 | if (idx == PSX_MAP_UNKNOWN) | |
98fa08a5 PC |
229 | return NULL; |
230 | ||
02487de7 | 231 | map = &state->maps[idx]; |
98fa08a5 PC |
232 | addr = kaddr - map->pc; |
233 | ||
234 | while (map->mirror_of) | |
235 | map = map->mirror_of; | |
236 | ||
237 | if (host) | |
238 | *host = map->address + addr; | |
239 | ||
240 | return map; | |
d16005f8 PC |
241 | } |
242 | ||
243 | u32 lightrec_rw(struct lightrec_state *state, union code op, | |
03535202 | 244 | u32 addr, u32 data, u32 *flags, struct block *block) |
d16005f8 PC |
245 | { |
246 | const struct lightrec_mem_map *map; | |
a59e5536 | 247 | const struct lightrec_mem_map_ops *ops; |
98fa08a5 | 248 | u32 opcode = op.opcode; |
a59e5536 | 249 | void *host; |
d16005f8 PC |
250 | |
251 | addr += (s16) op.i.imm; | |
d16005f8 | 252 | |
98fa08a5 | 253 | map = lightrec_get_map(state, &host, kunseg(addr)); |
d16005f8 | 254 | if (!map) { |
98fa08a5 | 255 | __segfault_cb(state, addr, block); |
d16005f8 PC |
256 | return 0; |
257 | } | |
258 | ||
d16005f8 | 259 | if (unlikely(map->ops)) { |
22eee2ac PC |
260 | if (flags && !LIGHTREC_FLAGS_GET_IO_MODE(*flags)) |
261 | *flags |= LIGHTREC_IO_MODE(LIGHTREC_IO_HW); | |
d16005f8 | 262 | |
a59e5536 | 263 | ops = map->ops; |
264 | } else { | |
22eee2ac PC |
265 | if (flags && !LIGHTREC_FLAGS_GET_IO_MODE(*flags)) |
266 | *flags |= LIGHTREC_IO_MODE(LIGHTREC_IO_DIRECT); | |
d16005f8 | 267 | |
a59e5536 | 268 | ops = &lightrec_default_ops; |
269 | } | |
d16005f8 PC |
270 | |
271 | switch (op.i.op) { | |
272 | case OP_SB: | |
a59e5536 | 273 | ops->sb(state, opcode, host, addr, (u8) data); |
d16005f8 PC |
274 | return 0; |
275 | case OP_SH: | |
a59e5536 | 276 | ops->sh(state, opcode, host, addr, (u16) data); |
d16005f8 PC |
277 | return 0; |
278 | case OP_SWL: | |
a59e5536 | 279 | lightrec_swl(state, ops, opcode, host, addr, data); |
d16005f8 PC |
280 | return 0; |
281 | case OP_SWR: | |
a59e5536 | 282 | lightrec_swr(state, ops, opcode, host, addr, data); |
d16005f8 PC |
283 | return 0; |
284 | case OP_SW: | |
a59e5536 | 285 | ops->sw(state, opcode, host, addr, data); |
d16005f8 PC |
286 | return 0; |
287 | case OP_SWC2: | |
a59e5536 | 288 | lightrec_swc2(state, op, ops, host, addr); |
d16005f8 PC |
289 | return 0; |
290 | case OP_LB: | |
a59e5536 | 291 | return (s32) (s8) ops->lb(state, opcode, host, addr); |
d16005f8 | 292 | case OP_LBU: |
a59e5536 | 293 | return ops->lb(state, opcode, host, addr); |
d16005f8 | 294 | case OP_LH: |
a59e5536 | 295 | return (s32) (s16) ops->lh(state, opcode, host, addr); |
d16005f8 | 296 | case OP_LHU: |
a59e5536 | 297 | return ops->lh(state, opcode, host, addr); |
d16005f8 | 298 | case OP_LWC2: |
a59e5536 | 299 | lightrec_lwc2(state, op, ops, host, addr); |
d16005f8 | 300 | return 0; |
a59e5536 | 301 | case OP_LWL: |
302 | return lightrec_lwl(state, ops, opcode, host, addr, data); | |
303 | case OP_LWR: | |
304 | return lightrec_lwr(state, ops, opcode, host, addr, data); | |
d16005f8 PC |
305 | case OP_LW: |
306 | default: | |
a59e5536 | 307 | return ops->lw(state, opcode, host, addr); |
d16005f8 PC |
308 | } |
309 | } | |
310 | ||
311 | static void lightrec_rw_helper(struct lightrec_state *state, | |
03535202 | 312 | union code op, u32 *flags, |
98fa08a5 | 313 | struct block *block) |
d16005f8 | 314 | { |
98fa08a5 PC |
315 | u32 ret = lightrec_rw(state, op, state->regs.gpr[op.i.rs], |
316 | state->regs.gpr[op.i.rt], flags, block); | |
d16005f8 PC |
317 | |
318 | switch (op.i.op) { | |
319 | case OP_LB: | |
320 | case OP_LBU: | |
321 | case OP_LH: | |
322 | case OP_LHU: | |
323 | case OP_LWL: | |
324 | case OP_LWR: | |
325 | case OP_LW: | |
326 | if (op.i.rt) | |
98fa08a5 | 327 | state->regs.gpr[op.i.rt] = ret; |
d8b04acd PC |
328 | fallthrough; |
329 | default: | |
d16005f8 PC |
330 | break; |
331 | } | |
332 | } | |
333 | ||
03535202 | 334 | static void lightrec_rw_cb(struct lightrec_state *state, u32 arg) |
d16005f8 | 335 | { |
03535202 | 336 | lightrec_rw_helper(state, (union code) arg, NULL, NULL); |
d16005f8 PC |
337 | } |
338 | ||
03535202 | 339 | static void lightrec_rw_generic_cb(struct lightrec_state *state, u32 arg) |
d16005f8 | 340 | { |
98fa08a5 PC |
341 | struct block *block; |
342 | struct opcode *op; | |
343 | bool was_tagged; | |
344 | u16 offset = (u16)arg; | |
ba3814c1 | 345 | u16 old_flags; |
98fa08a5 PC |
346 | |
347 | block = lightrec_find_block_from_lut(state->block_cache, | |
348 | arg >> 16, state->next_pc); | |
349 | if (unlikely(!block)) { | |
350 | pr_err("rw_generic: No block found in LUT for PC 0x%x offset 0x%x\n", | |
351 | state->next_pc, offset); | |
ba3814c1 | 352 | lightrec_set_exit_flags(state, LIGHTREC_EXIT_SEGFAULT); |
98fa08a5 PC |
353 | return; |
354 | } | |
355 | ||
356 | op = &block->opcode_list[offset]; | |
22eee2ac | 357 | was_tagged = LIGHTREC_FLAGS_GET_IO_MODE(op->flags); |
d16005f8 | 358 | |
98fa08a5 | 359 | lightrec_rw_helper(state, op->c, &op->flags, block); |
d16005f8 PC |
360 | |
361 | if (!was_tagged) { | |
ba3814c1 | 362 | old_flags = block_set_flags(block, BLOCK_SHOULD_RECOMPILE); |
d16005f8 | 363 | |
ba3814c1 PC |
364 | if (!(old_flags & BLOCK_SHOULD_RECOMPILE)) { |
365 | pr_debug("Opcode of block at PC 0x%08x has been tagged" | |
366 | " - flag for recompilation\n", block->pc); | |
367 | ||
368 | lut_write(state, lut_offset(block->pc), NULL); | |
369 | } | |
d16005f8 PC |
370 | } |
371 | } | |
372 | ||
98fa08a5 | 373 | static u32 clamp_s32(s32 val, s32 min, s32 max) |
d16005f8 | 374 | { |
98fa08a5 PC |
375 | return val < min ? min : val > max ? max : val; |
376 | } | |
d16005f8 | 377 | |
11357fef PC |
378 | static u16 load_u16(u32 *ptr) |
379 | { | |
380 | return ((struct u16x2 *) ptr)->l; | |
381 | } | |
382 | ||
383 | static void store_u16(u32 *ptr, u16 value) | |
384 | { | |
385 | ((struct u16x2 *) ptr)->l = value; | |
386 | } | |
387 | ||
98fa08a5 PC |
388 | static u32 lightrec_mfc2(struct lightrec_state *state, u8 reg) |
389 | { | |
390 | s16 gteir1, gteir2, gteir3; | |
391 | ||
392 | switch (reg) { | |
393 | case 1: | |
394 | case 3: | |
395 | case 5: | |
396 | case 8: | |
397 | case 9: | |
398 | case 10: | |
399 | case 11: | |
11357fef | 400 | return (s32)(s16) load_u16(&state->regs.cp2d[reg]); |
98fa08a5 PC |
401 | case 7: |
402 | case 16: | |
403 | case 17: | |
404 | case 18: | |
405 | case 19: | |
11357fef | 406 | return load_u16(&state->regs.cp2d[reg]); |
98fa08a5 PC |
407 | case 28: |
408 | case 29: | |
11357fef PC |
409 | gteir1 = (s16) load_u16(&state->regs.cp2d[9]); |
410 | gteir2 = (s16) load_u16(&state->regs.cp2d[10]); | |
411 | gteir3 = (s16) load_u16(&state->regs.cp2d[11]); | |
98fa08a5 PC |
412 | |
413 | return clamp_s32(gteir1 >> 7, 0, 0x1f) << 0 | | |
414 | clamp_s32(gteir2 >> 7, 0, 0x1f) << 5 | | |
415 | clamp_s32(gteir3 >> 7, 0, 0x1f) << 10; | |
416 | case 15: | |
417 | reg = 14; | |
d8b04acd PC |
418 | fallthrough; |
419 | default: | |
98fa08a5 PC |
420 | return state->regs.cp2d[reg]; |
421 | } | |
422 | } | |
d16005f8 | 423 | |
98fa08a5 PC |
424 | u32 lightrec_mfc(struct lightrec_state *state, union code op) |
425 | { | |
ba3814c1 PC |
426 | u32 val; |
427 | ||
98fa08a5 PC |
428 | if (op.i.op == OP_CP0) |
429 | return state->regs.cp0[op.r.rd]; | |
430 | else if (op.r.rs == OP_CP2_BASIC_MFC2) | |
431 | return lightrec_mfc2(state, op.r.rd); | |
ba3814c1 PC |
432 | |
433 | val = state->regs.cp2c[op.r.rd]; | |
434 | ||
435 | switch (op.r.rd) { | |
436 | case 4: | |
437 | case 12: | |
438 | case 20: | |
439 | case 26: | |
440 | case 27: | |
441 | case 29: | |
442 | case 30: | |
443 | return (u32)(s16)val; | |
444 | default: | |
445 | return val; | |
446 | } | |
d16005f8 PC |
447 | } |
448 | ||
98fa08a5 | 449 | static void lightrec_mtc0(struct lightrec_state *state, u8 reg, u32 data) |
d16005f8 | 450 | { |
fd58fa32 | 451 | u32 status, oldstatus, cause; |
98fa08a5 PC |
452 | |
453 | switch (reg) { | |
454 | case 1: | |
455 | case 4: | |
456 | case 8: | |
457 | case 14: | |
458 | case 15: | |
459 | /* Those registers are read-only */ | |
460 | return; | |
fd58fa32 | 461 | default: |
98fa08a5 PC |
462 | break; |
463 | } | |
d16005f8 | 464 | |
98fa08a5 PC |
465 | if (reg == 12) { |
466 | status = state->regs.cp0[12]; | |
fd58fa32 | 467 | oldstatus = status; |
d16005f8 | 468 | |
98fa08a5 PC |
469 | if (status & ~data & BIT(16)) { |
470 | state->ops.enable_ram(state, true); | |
471 | lightrec_invalidate_all(state); | |
472 | } else if (~status & data & BIT(16)) { | |
473 | state->ops.enable_ram(state, false); | |
474 | } | |
475 | } | |
476 | ||
fd58fa32 PC |
477 | if (reg == 13) { |
478 | state->regs.cp0[13] &= ~0x300; | |
479 | state->regs.cp0[13] |= data & 0x300; | |
480 | } else { | |
481 | state->regs.cp0[reg] = data; | |
482 | } | |
98fa08a5 PC |
483 | |
484 | if (reg == 12 || reg == 13) { | |
485 | cause = state->regs.cp0[13]; | |
486 | status = state->regs.cp0[12]; | |
487 | ||
fd58fa32 | 488 | /* Handle software interrupts */ |
98fa08a5 PC |
489 | if (!!(status & cause & 0x300) & status) |
490 | lightrec_set_exit_flags(state, LIGHTREC_EXIT_CHECK_INTERRUPT); | |
fd58fa32 PC |
491 | |
492 | /* Handle hardware interrupts */ | |
493 | if (reg == 12 && !(~status & 0x401) && (~oldstatus & 0x401)) | |
494 | lightrec_set_exit_flags(state, LIGHTREC_EXIT_CHECK_INTERRUPT); | |
98fa08a5 PC |
495 | } |
496 | } | |
497 | ||
498 | static u32 count_leading_bits(s32 data) | |
499 | { | |
98fa08a5 PC |
500 | u32 cnt = 33; |
501 | ||
de742fa0 PC |
502 | #ifdef __has_builtin |
503 | #if __has_builtin(__builtin_clrsb) | |
504 | return 1 + __builtin_clrsb(data); | |
505 | #endif | |
506 | #endif | |
507 | ||
98fa08a5 PC |
508 | data = (data ^ (data >> 31)) << 1; |
509 | ||
510 | do { | |
511 | cnt -= 1; | |
512 | data >>= 1; | |
513 | } while (data); | |
514 | ||
515 | return cnt; | |
98fa08a5 PC |
516 | } |
517 | ||
518 | static void lightrec_mtc2(struct lightrec_state *state, u8 reg, u32 data) | |
519 | { | |
520 | switch (reg) { | |
521 | case 15: | |
522 | state->regs.cp2d[12] = state->regs.cp2d[13]; | |
523 | state->regs.cp2d[13] = state->regs.cp2d[14]; | |
524 | state->regs.cp2d[14] = data; | |
525 | break; | |
526 | case 28: | |
527 | state->regs.cp2d[9] = (data << 7) & 0xf80; | |
528 | state->regs.cp2d[10] = (data << 2) & 0xf80; | |
529 | state->regs.cp2d[11] = (data >> 3) & 0xf80; | |
530 | break; | |
531 | case 31: | |
532 | return; | |
533 | case 30: | |
534 | state->regs.cp2d[31] = count_leading_bits((s32) data); | |
d8b04acd PC |
535 | fallthrough; |
536 | default: | |
98fa08a5 PC |
537 | state->regs.cp2d[reg] = data; |
538 | break; | |
539 | } | |
540 | } | |
d16005f8 | 541 | |
98fa08a5 PC |
542 | static void lightrec_ctc2(struct lightrec_state *state, u8 reg, u32 data) |
543 | { | |
544 | switch (reg) { | |
545 | case 4: | |
546 | case 12: | |
547 | case 20: | |
548 | case 26: | |
549 | case 27: | |
550 | case 29: | |
551 | case 30: | |
11357fef | 552 | store_u16(&state->regs.cp2c[reg], data); |
98fa08a5 PC |
553 | break; |
554 | case 31: | |
555 | data = (data & 0x7ffff000) | !!(data & 0x7f87e000) << 31; | |
d8b04acd PC |
556 | fallthrough; |
557 | default: | |
11357fef | 558 | state->regs.cp2c[reg] = data; |
98fa08a5 PC |
559 | break; |
560 | } | |
98fa08a5 PC |
561 | } |
562 | ||
563 | void lightrec_mtc(struct lightrec_state *state, union code op, u32 data) | |
564 | { | |
565 | if (op.i.op == OP_CP0) | |
566 | lightrec_mtc0(state, op.r.rd, data); | |
567 | else if (op.r.rs == OP_CP2_BASIC_CTC2) | |
568 | lightrec_ctc2(state, op.r.rd, data); | |
569 | else | |
570 | lightrec_mtc2(state, op.r.rd, data); | |
d16005f8 PC |
571 | } |
572 | ||
03535202 | 573 | static void lightrec_mtc_cb(struct lightrec_state *state, u32 arg) |
d16005f8 | 574 | { |
03535202 | 575 | union code op = (union code) arg; |
22eee2ac | 576 | |
98fa08a5 | 577 | lightrec_mtc(state, op, state->regs.gpr[op.r.rt]); |
d16005f8 PC |
578 | } |
579 | ||
98fa08a5 | 580 | void lightrec_rfe(struct lightrec_state *state) |
d16005f8 PC |
581 | { |
582 | u32 status; | |
583 | ||
584 | /* Read CP0 Status register (r12) */ | |
98fa08a5 | 585 | status = state->regs.cp0[12]; |
d16005f8 PC |
586 | |
587 | /* Switch the bits */ | |
588 | status = ((status & 0x3c) >> 2) | (status & ~0xf); | |
589 | ||
590 | /* Write it back */ | |
98fa08a5 | 591 | lightrec_mtc0(state, 12, status); |
d16005f8 PC |
592 | } |
593 | ||
98fa08a5 | 594 | void lightrec_cp(struct lightrec_state *state, union code op) |
d16005f8 | 595 | { |
98fa08a5 PC |
596 | if (op.i.op == OP_CP0) { |
597 | pr_err("Invalid CP opcode to coprocessor #0\n"); | |
598 | return; | |
599 | } | |
d16005f8 | 600 | |
98fa08a5 | 601 | (*state->ops.cop2_op)(state, op.opcode); |
d16005f8 PC |
602 | } |
603 | ||
03535202 | 604 | static void lightrec_cp_cb(struct lightrec_state *state, u32 arg) |
22eee2ac | 605 | { |
03535202 | 606 | lightrec_cp(state, (union code) arg); |
22eee2ac PC |
607 | } |
608 | ||
03535202 | 609 | static struct block * lightrec_get_block(struct lightrec_state *state, u32 pc) |
d16005f8 PC |
610 | { |
611 | struct block *block = lightrec_find_block(state->block_cache, pc); | |
ba3814c1 | 612 | u8 old_flags; |
d16005f8 | 613 | |
98fa08a5 | 614 | if (block && lightrec_block_is_outdated(state, block)) { |
d16005f8 PC |
615 | pr_debug("Block at PC 0x%08x is outdated!\n", block->pc); |
616 | ||
ba3814c1 PC |
617 | old_flags = block_set_flags(block, BLOCK_IS_DEAD); |
618 | if (!(old_flags & BLOCK_IS_DEAD)) { | |
619 | /* Make sure the recompiler isn't processing the block | |
620 | * we'll destroy */ | |
621 | if (ENABLE_THREADED_COMPILER) | |
622 | lightrec_recompiler_remove(state->rec, block); | |
623 | ||
624 | lightrec_unregister_block(state->block_cache, block); | |
625 | remove_from_code_lut(state->block_cache, block); | |
626 | lightrec_free_block(state, block); | |
627 | } | |
d16005f8 | 628 | |
d16005f8 PC |
629 | block = NULL; |
630 | } | |
631 | ||
632 | if (!block) { | |
633 | block = lightrec_precompile_block(state, pc); | |
634 | if (!block) { | |
635 | pr_err("Unable to recompile block at PC 0x%x\n", pc); | |
636 | lightrec_set_exit_flags(state, LIGHTREC_EXIT_SEGFAULT); | |
637 | return NULL; | |
638 | } | |
639 | ||
640 | lightrec_register_block(state->block_cache, block); | |
641 | } | |
642 | ||
643 | return block; | |
644 | } | |
645 | ||
646 | static void * get_next_block_func(struct lightrec_state *state, u32 pc) | |
647 | { | |
648 | struct block *block; | |
649 | bool should_recompile; | |
650 | void *func; | |
d8b04acd | 651 | int err; |
d16005f8 PC |
652 | |
653 | for (;;) { | |
d8b04acd | 654 | func = lut_read(state, lut_offset(pc)); |
d16005f8 | 655 | if (func && func != state->get_next_block) |
98fa08a5 | 656 | break; |
d16005f8 PC |
657 | |
658 | block = lightrec_get_block(state, pc); | |
659 | ||
660 | if (unlikely(!block)) | |
98fa08a5 PC |
661 | break; |
662 | ||
ba3814c1 PC |
663 | if (OPT_REPLACE_MEMSET && |
664 | block_has_flag(block, BLOCK_IS_MEMSET)) { | |
98fa08a5 PC |
665 | func = state->memset_func; |
666 | break; | |
667 | } | |
d16005f8 | 668 | |
ba3814c1 PC |
669 | should_recompile = block_has_flag(block, BLOCK_SHOULD_RECOMPILE) && |
670 | !block_has_flag(block, BLOCK_IS_DEAD); | |
d16005f8 PC |
671 | |
672 | if (unlikely(should_recompile)) { | |
a59e5536 | 673 | pr_debug("Block at PC 0x%08x should recompile\n", pc); |
d16005f8 | 674 | |
d8b04acd | 675 | if (ENABLE_THREADED_COMPILER) { |
a59e5536 | 676 | lightrec_recompiler_add(state->rec, block); |
d8b04acd PC |
677 | } else { |
678 | err = lightrec_compile_block(state->cstate, block); | |
679 | if (err) { | |
680 | state->exit_flags = LIGHTREC_EXIT_NOMEM; | |
681 | return NULL; | |
682 | } | |
683 | } | |
d16005f8 PC |
684 | } |
685 | ||
686 | if (ENABLE_THREADED_COMPILER && likely(!should_recompile)) | |
98fa08a5 | 687 | func = lightrec_recompiler_run_first_pass(state, block, &pc); |
d16005f8 PC |
688 | else |
689 | func = block->function; | |
690 | ||
691 | if (likely(func)) | |
98fa08a5 | 692 | break; |
d16005f8 | 693 | |
ba3814c1 | 694 | if (unlikely(block_has_flag(block, BLOCK_NEVER_COMPILE))) { |
98fa08a5 PC |
695 | pc = lightrec_emulate_block(state, block, pc); |
696 | ||
697 | } else if (!ENABLE_THREADED_COMPILER) { | |
698 | /* Block wasn't compiled yet - run the interpreter */ | |
ba3814c1 | 699 | if (block_has_flag(block, BLOCK_FULLY_TAGGED)) |
98fa08a5 PC |
700 | pr_debug("Block fully tagged, skipping first pass\n"); |
701 | else if (ENABLE_FIRST_PASS && likely(!should_recompile)) | |
702 | pc = lightrec_emulate_block(state, block, pc); | |
d16005f8 | 703 | |
d16005f8 | 704 | /* Then compile it using the profiled data */ |
d8b04acd PC |
705 | err = lightrec_compile_block(state->cstate, block); |
706 | if (err) { | |
707 | state->exit_flags = LIGHTREC_EXIT_NOMEM; | |
708 | return NULL; | |
709 | } | |
ba3814c1 PC |
710 | } else if (unlikely(block_has_flag(block, BLOCK_IS_DEAD))) { |
711 | /* | |
712 | * If the block is dead but has never been compiled, | |
713 | * then its function pointer is NULL and we cannot | |
714 | * execute the block. In that case, reap all the dead | |
715 | * blocks now, and in the next loop we will create a | |
716 | * new block. | |
717 | */ | |
718 | lightrec_reaper_reap(state->reaper); | |
98fa08a5 PC |
719 | } else { |
720 | lightrec_recompiler_add(state->rec, block); | |
d16005f8 PC |
721 | } |
722 | ||
723 | if (state->exit_flags != LIGHTREC_EXIT_NORMAL || | |
98fa08a5 PC |
724 | state->current_cycle >= state->target_cycle) |
725 | break; | |
d16005f8 | 726 | } |
d16005f8 | 727 | |
98fa08a5 PC |
728 | state->next_pc = pc; |
729 | return func; | |
d16005f8 PC |
730 | } |
731 | ||
d8b04acd PC |
732 | static void * lightrec_alloc_code(struct lightrec_state *state, size_t size) |
733 | { | |
734 | void *code; | |
735 | ||
736 | if (ENABLE_THREADED_COMPILER) | |
737 | lightrec_code_alloc_lock(state); | |
738 | ||
739 | code = tlsf_malloc(state->tlsf, size); | |
740 | ||
741 | if (ENABLE_THREADED_COMPILER) | |
742 | lightrec_code_alloc_unlock(state); | |
743 | ||
744 | return code; | |
745 | } | |
746 | ||
747 | static void lightrec_realloc_code(struct lightrec_state *state, | |
748 | void *ptr, size_t size) | |
749 | { | |
750 | /* NOTE: 'size' MUST be smaller than the size specified during | |
751 | * the allocation. */ | |
752 | ||
753 | if (ENABLE_THREADED_COMPILER) | |
754 | lightrec_code_alloc_lock(state); | |
755 | ||
756 | tlsf_realloc(state->tlsf, ptr, size); | |
757 | ||
758 | if (ENABLE_THREADED_COMPILER) | |
759 | lightrec_code_alloc_unlock(state); | |
760 | } | |
761 | ||
762 | static void lightrec_free_code(struct lightrec_state *state, void *ptr) | |
763 | { | |
764 | if (ENABLE_THREADED_COMPILER) | |
765 | lightrec_code_alloc_lock(state); | |
766 | ||
767 | tlsf_free(state->tlsf, ptr); | |
768 | ||
769 | if (ENABLE_THREADED_COMPILER) | |
770 | lightrec_code_alloc_unlock(state); | |
771 | } | |
772 | ||
02487de7 | 773 | static void * lightrec_emit_code(struct lightrec_state *state, |
d8b04acd | 774 | const struct block *block, |
02487de7 PC |
775 | jit_state_t *_jit, unsigned int *size) |
776 | { | |
777 | bool has_code_buffer = ENABLE_CODE_BUFFER && state->tlsf; | |
778 | jit_word_t code_size, new_code_size; | |
779 | void *code; | |
780 | ||
781 | jit_realize(); | |
782 | ||
783 | if (!ENABLE_DISASSEMBLER) | |
784 | jit_set_data(NULL, 0, JIT_DISABLE_DATA | JIT_DISABLE_NOTE); | |
785 | ||
786 | if (has_code_buffer) { | |
787 | jit_get_code(&code_size); | |
d8b04acd PC |
788 | code = lightrec_alloc_code(state, (size_t) code_size); |
789 | ||
790 | if (!code) { | |
791 | if (ENABLE_THREADED_COMPILER) { | |
792 | /* If we're using the threaded compiler, return | |
793 | * an allocation error here. The threaded | |
794 | * compiler will then empty its job queue and | |
795 | * request a code flush using the reaper. */ | |
796 | return NULL; | |
797 | } | |
798 | ||
799 | /* Remove outdated blocks, and try again */ | |
800 | lightrec_remove_outdated_blocks(state->block_cache, block); | |
801 | ||
802 | pr_debug("Re-try to alloc %zu bytes...\n", code_size); | |
803 | ||
804 | code = lightrec_alloc_code(state, code_size); | |
805 | if (!code) { | |
806 | pr_err("Could not alloc even after removing old blocks!\n"); | |
807 | return NULL; | |
808 | } | |
809 | } | |
02487de7 PC |
810 | |
811 | jit_set_code(code, code_size); | |
812 | } | |
813 | ||
814 | code = jit_emit(); | |
815 | ||
816 | jit_get_code(&new_code_size); | |
817 | lightrec_register(MEM_FOR_CODE, new_code_size); | |
818 | ||
819 | if (has_code_buffer) { | |
d8b04acd | 820 | lightrec_realloc_code(state, code, (size_t) new_code_size); |
02487de7 PC |
821 | |
822 | pr_debug("Creating code block at address 0x%" PRIxPTR ", " | |
823 | "code size: %" PRIuPTR " new: %" PRIuPTR "\n", | |
824 | (uintptr_t) code, code_size, new_code_size); | |
825 | } | |
826 | ||
827 | *size = (unsigned int) new_code_size; | |
828 | ||
829 | return code; | |
830 | } | |
831 | ||
98fa08a5 | 832 | static struct block * generate_wrapper(struct lightrec_state *state) |
d16005f8 PC |
833 | { |
834 | struct block *block; | |
835 | jit_state_t *_jit; | |
836 | unsigned int i; | |
fd58fa32 | 837 | jit_node_t *addr[C_WRAPPERS_COUNT - 1]; |
ba3814c1 | 838 | jit_node_t *to_end[C_WRAPPERS_COUNT - 1]; |
d16005f8 PC |
839 | |
840 | block = lightrec_malloc(state, MEM_FOR_IR, sizeof(*block)); | |
841 | if (!block) | |
842 | goto err_no_mem; | |
843 | ||
844 | _jit = jit_new_state(); | |
845 | if (!_jit) | |
846 | goto err_free_block; | |
847 | ||
848 | jit_name("RW wrapper"); | |
849 | jit_note(__FILE__, __LINE__); | |
850 | ||
851 | /* Wrapper entry point */ | |
852 | jit_prolog(); | |
fd58fa32 PC |
853 | jit_tramp(256); |
854 | ||
ba3814c1 | 855 | /* Add entry points */ |
fd58fa32 | 856 | for (i = C_WRAPPERS_COUNT - 1; i > 0; i--) { |
ba3814c1 PC |
857 | jit_ldxi(JIT_R1, LIGHTREC_REG_STATE, |
858 | offsetof(struct lightrec_state, c_wrappers[i])); | |
859 | to_end[i - 1] = jit_b(); | |
fd58fa32 PC |
860 | addr[i - 1] = jit_indirect(); |
861 | } | |
862 | ||
ba3814c1 PC |
863 | jit_ldxi(JIT_R1, LIGHTREC_REG_STATE, |
864 | offsetof(struct lightrec_state, c_wrappers[0])); | |
865 | ||
866 | for (i = 0; i < C_WRAPPERS_COUNT - 1; i++) | |
867 | jit_patch(to_end[i]); | |
868 | ||
fd58fa32 PC |
869 | jit_epilog(); |
870 | jit_prolog(); | |
d16005f8 | 871 | |
fd58fa32 | 872 | /* Save all temporaries on stack */ |
ba3814c1 PC |
873 | for (i = 0; i < NUM_TEMPS; i++) { |
874 | if (i + FIRST_TEMP != 1) { | |
875 | jit_stxi(offsetof(struct lightrec_state, wrapper_regs[i]), | |
876 | LIGHTREC_REG_STATE, JIT_R(i + FIRST_TEMP)); | |
877 | } | |
878 | } | |
d16005f8 | 879 | |
ba3814c1 | 880 | jit_getarg(JIT_R2, jit_arg()); |
03535202 | 881 | |
ba3814c1 PC |
882 | jit_prepare(); |
883 | jit_pushargr(LIGHTREC_REG_STATE); | |
884 | jit_pushargr(JIT_R2); | |
d16005f8 | 885 | |
ba3814c1 PC |
886 | jit_ldxi_ui(JIT_R2, LIGHTREC_REG_STATE, |
887 | offsetof(struct lightrec_state, target_cycle)); | |
d16005f8 | 888 | |
ba3814c1 PC |
889 | /* state->current_cycle = state->target_cycle - delta; */ |
890 | jit_subr(LIGHTREC_REG_CYCLE, JIT_R2, LIGHTREC_REG_CYCLE); | |
891 | jit_stxi_i(offsetof(struct lightrec_state, current_cycle), | |
892 | LIGHTREC_REG_STATE, LIGHTREC_REG_CYCLE); | |
d16005f8 | 893 | |
ba3814c1 PC |
894 | /* Call the wrapper function */ |
895 | jit_finishr(JIT_R1); | |
d16005f8 | 896 | |
ba3814c1 PC |
897 | /* delta = state->target_cycle - state->current_cycle */; |
898 | jit_ldxi_ui(LIGHTREC_REG_CYCLE, LIGHTREC_REG_STATE, | |
899 | offsetof(struct lightrec_state, current_cycle)); | |
900 | jit_ldxi_ui(JIT_R1, LIGHTREC_REG_STATE, | |
901 | offsetof(struct lightrec_state, target_cycle)); | |
902 | jit_subr(LIGHTREC_REG_CYCLE, JIT_R1, LIGHTREC_REG_CYCLE); | |
fd58fa32 | 903 | |
ba3814c1 PC |
904 | /* Restore temporaries from stack */ |
905 | for (i = 0; i < NUM_TEMPS; i++) { | |
906 | if (i + FIRST_TEMP != 1) { | |
907 | jit_ldxi(JIT_R(i + FIRST_TEMP), LIGHTREC_REG_STATE, | |
908 | offsetof(struct lightrec_state, wrapper_regs[i])); | |
909 | } | |
910 | } | |
d16005f8 | 911 | |
ba3814c1 | 912 | jit_ret(); |
d16005f8 PC |
913 | jit_epilog(); |
914 | ||
d16005f8 | 915 | block->_jit = _jit; |
d16005f8 | 916 | block->opcode_list = NULL; |
ba3814c1 | 917 | block->flags = BLOCK_NO_OPCODE_LIST; |
d16005f8 PC |
918 | block->nb_ops = 0; |
919 | ||
d8b04acd | 920 | block->function = lightrec_emit_code(state, block, _jit, |
02487de7 PC |
921 | &block->code_size); |
922 | if (!block->function) | |
923 | goto err_free_block; | |
924 | ||
fd58fa32 PC |
925 | state->wrappers_eps[C_WRAPPERS_COUNT - 1] = block->function; |
926 | ||
927 | for (i = 0; i < C_WRAPPERS_COUNT - 1; i++) | |
928 | state->wrappers_eps[i] = jit_address(addr[i]); | |
929 | ||
d16005f8 PC |
930 | if (ENABLE_DISASSEMBLER) { |
931 | pr_debug("Wrapper block:\n"); | |
932 | jit_disassemble(); | |
933 | } | |
934 | ||
935 | jit_clear_state(); | |
936 | return block; | |
937 | ||
938 | err_free_block: | |
939 | lightrec_free(state, MEM_FOR_IR, sizeof(*block), block); | |
940 | err_no_mem: | |
941 | pr_err("Unable to compile wrapper: Out of memory\n"); | |
942 | return NULL; | |
943 | } | |
944 | ||
98fa08a5 PC |
945 | static u32 lightrec_memset(struct lightrec_state *state) |
946 | { | |
947 | u32 kunseg_pc = kunseg(state->regs.gpr[4]); | |
948 | void *host; | |
949 | const struct lightrec_mem_map *map = lightrec_get_map(state, &host, kunseg_pc); | |
950 | u32 length = state->regs.gpr[5] * 4; | |
951 | ||
952 | if (!map) { | |
953 | pr_err("Unable to find memory map for memset target address " | |
954 | "0x%x\n", kunseg_pc); | |
955 | return 0; | |
956 | } | |
957 | ||
958 | pr_debug("Calling host memset, PC 0x%x (host address 0x%" PRIxPTR ") for %u bytes\n", | |
959 | kunseg_pc, (uintptr_t)host, length); | |
960 | memset(host, 0, length); | |
961 | ||
962 | if (!state->invalidate_from_dma_only) | |
963 | lightrec_invalidate_map(state, map, kunseg_pc, length); | |
964 | ||
965 | /* Rough estimation of the number of cycles consumed */ | |
966 | return 8 + 5 * (length + 3 / 4); | |
967 | } | |
968 | ||
d16005f8 PC |
969 | static struct block * generate_dispatcher(struct lightrec_state *state) |
970 | { | |
971 | struct block *block; | |
972 | jit_state_t *_jit; | |
02487de7 | 973 | jit_node_t *to_end, *loop, *addr, *addr2, *addr3; |
d16005f8 | 974 | unsigned int i; |
02487de7 | 975 | u32 offset; |
d16005f8 PC |
976 | |
977 | block = lightrec_malloc(state, MEM_FOR_IR, sizeof(*block)); | |
978 | if (!block) | |
979 | goto err_no_mem; | |
980 | ||
981 | _jit = jit_new_state(); | |
982 | if (!_jit) | |
983 | goto err_free_block; | |
984 | ||
985 | jit_name("dispatcher"); | |
986 | jit_note(__FILE__, __LINE__); | |
987 | ||
988 | jit_prolog(); | |
989 | jit_frame(256); | |
990 | ||
ba3814c1 | 991 | jit_getarg(JIT_V1, jit_arg()); |
d16005f8 | 992 | jit_getarg_i(LIGHTREC_REG_CYCLE, jit_arg()); |
d16005f8 PC |
993 | |
994 | /* Force all callee-saved registers to be pushed on the stack */ | |
995 | for (i = 0; i < NUM_REGS; i++) | |
ba3814c1 | 996 | jit_movr(JIT_V(i + FIRST_REG), JIT_V(i + FIRST_REG)); |
d16005f8 PC |
997 | |
998 | /* Pass lightrec_state structure to blocks, using the last callee-saved | |
999 | * register that Lightning provides */ | |
1000 | jit_movi(LIGHTREC_REG_STATE, (intptr_t) state); | |
1001 | ||
1002 | loop = jit_label(); | |
1003 | ||
1004 | /* Call the block's code */ | |
ba3814c1 | 1005 | jit_jmpr(JIT_V1); |
d16005f8 | 1006 | |
98fa08a5 PC |
1007 | if (OPT_REPLACE_MEMSET) { |
1008 | /* Blocks will jump here when they need to call | |
1009 | * lightrec_memset() */ | |
1010 | addr3 = jit_indirect(); | |
1011 | ||
ba3814c1 PC |
1012 | jit_movr(JIT_V1, LIGHTREC_REG_CYCLE); |
1013 | ||
98fa08a5 PC |
1014 | jit_prepare(); |
1015 | jit_pushargr(LIGHTREC_REG_STATE); | |
1016 | jit_finishi(lightrec_memset); | |
1017 | ||
1018 | jit_ldxi_ui(JIT_V0, LIGHTREC_REG_STATE, | |
1019 | offsetof(struct lightrec_state, regs.gpr[31])); | |
1020 | ||
ba3814c1 PC |
1021 | jit_retval(LIGHTREC_REG_CYCLE); |
1022 | jit_subr(LIGHTREC_REG_CYCLE, JIT_V1, LIGHTREC_REG_CYCLE); | |
98fa08a5 PC |
1023 | } |
1024 | ||
d16005f8 PC |
1025 | /* The block will jump here, with the number of cycles remaining in |
1026 | * LIGHTREC_REG_CYCLE */ | |
1027 | addr2 = jit_indirect(); | |
1028 | ||
98fa08a5 PC |
1029 | /* Store back the next_pc to the lightrec_state structure */ |
1030 | offset = offsetof(struct lightrec_state, next_pc); | |
1031 | jit_stxi_i(offset, LIGHTREC_REG_STATE, JIT_V0); | |
1032 | ||
d16005f8 PC |
1033 | /* Jump to end if state->target_cycle < state->current_cycle */ |
1034 | to_end = jit_blei(LIGHTREC_REG_CYCLE, 0); | |
1035 | ||
1036 | /* Convert next PC to KUNSEG and avoid mirrors */ | |
ba3814c1 PC |
1037 | jit_andi(JIT_V1, JIT_V0, 0x10000000 | (RAM_SIZE - 1)); |
1038 | jit_rshi_u(JIT_R1, JIT_V1, 28); | |
02487de7 PC |
1039 | jit_andi(JIT_R2, JIT_V0, BIOS_SIZE - 1); |
1040 | jit_addi(JIT_R2, JIT_R2, RAM_SIZE); | |
ba3814c1 | 1041 | jit_movnr(JIT_V1, JIT_R2, JIT_R1); |
02487de7 PC |
1042 | |
1043 | /* If possible, use the code LUT */ | |
1044 | if (!lut_is_32bit(state)) | |
ba3814c1 PC |
1045 | jit_lshi(JIT_V1, JIT_V1, 1); |
1046 | jit_addr(JIT_V1, JIT_V1, LIGHTREC_REG_STATE); | |
02487de7 PC |
1047 | |
1048 | offset = offsetof(struct lightrec_state, code_lut); | |
1049 | if (lut_is_32bit(state)) | |
ba3814c1 | 1050 | jit_ldxi_ui(JIT_V1, JIT_V1, offset); |
02487de7 | 1051 | else |
ba3814c1 | 1052 | jit_ldxi(JIT_V1, JIT_V1, offset); |
d16005f8 PC |
1053 | |
1054 | /* If we get non-NULL, loop */ | |
ba3814c1 PC |
1055 | jit_patch_at(jit_bnei(JIT_V1, 0), loop); |
1056 | ||
1057 | /* The code LUT will be set to this address when the block at the target | |
1058 | * PC has been preprocessed but not yet compiled by the threaded | |
1059 | * recompiler */ | |
1060 | addr = jit_indirect(); | |
d16005f8 PC |
1061 | |
1062 | /* Slow path: call C function get_next_block_func() */ | |
d16005f8 | 1063 | |
98fa08a5 | 1064 | if (ENABLE_FIRST_PASS || OPT_DETECT_IMPOSSIBLE_BRANCHES) { |
d16005f8 PC |
1065 | /* We may call the interpreter - update state->current_cycle */ |
1066 | jit_ldxi_i(JIT_R2, LIGHTREC_REG_STATE, | |
1067 | offsetof(struct lightrec_state, target_cycle)); | |
ba3814c1 | 1068 | jit_subr(JIT_V1, JIT_R2, LIGHTREC_REG_CYCLE); |
d16005f8 | 1069 | jit_stxi_i(offsetof(struct lightrec_state, current_cycle), |
ba3814c1 | 1070 | LIGHTREC_REG_STATE, JIT_V1); |
d16005f8 PC |
1071 | } |
1072 | ||
d16005f8 PC |
1073 | jit_prepare(); |
1074 | jit_pushargr(LIGHTREC_REG_STATE); | |
1075 | jit_pushargr(JIT_V0); | |
ba3814c1 PC |
1076 | |
1077 | /* Save the cycles register if needed */ | |
1078 | if (!(ENABLE_FIRST_PASS || OPT_DETECT_IMPOSSIBLE_BRANCHES)) | |
1079 | jit_movr(JIT_V0, LIGHTREC_REG_CYCLE); | |
1080 | ||
1081 | /* Get the next block */ | |
d16005f8 | 1082 | jit_finishi(&get_next_block_func); |
ba3814c1 | 1083 | jit_retval(JIT_V1); |
d16005f8 | 1084 | |
98fa08a5 | 1085 | if (ENABLE_FIRST_PASS || OPT_DETECT_IMPOSSIBLE_BRANCHES) { |
d16005f8 PC |
1086 | /* The interpreter may have updated state->current_cycle and |
1087 | * state->target_cycle - recalc the delta */ | |
1088 | jit_ldxi_i(JIT_R1, LIGHTREC_REG_STATE, | |
1089 | offsetof(struct lightrec_state, current_cycle)); | |
1090 | jit_ldxi_i(JIT_R2, LIGHTREC_REG_STATE, | |
1091 | offsetof(struct lightrec_state, target_cycle)); | |
1092 | jit_subr(LIGHTREC_REG_CYCLE, JIT_R2, JIT_R1); | |
ba3814c1 PC |
1093 | } else { |
1094 | jit_movr(LIGHTREC_REG_CYCLE, JIT_V0); | |
d16005f8 PC |
1095 | } |
1096 | ||
1097 | /* If we get non-NULL, loop */ | |
ba3814c1 | 1098 | jit_patch_at(jit_bnei(JIT_V1, 0), loop); |
d16005f8 | 1099 | |
d16005f8 PC |
1100 | /* When exiting, the recompiled code will jump to that address */ |
1101 | jit_note(__FILE__, __LINE__); | |
1102 | jit_patch(to_end); | |
1103 | ||
d16005f8 PC |
1104 | jit_retr(LIGHTREC_REG_CYCLE); |
1105 | jit_epilog(); | |
1106 | ||
d16005f8 | 1107 | block->_jit = _jit; |
d16005f8 | 1108 | block->opcode_list = NULL; |
ba3814c1 | 1109 | block->flags = BLOCK_NO_OPCODE_LIST; |
d16005f8 PC |
1110 | block->nb_ops = 0; |
1111 | ||
d8b04acd | 1112 | block->function = lightrec_emit_code(state, block, _jit, |
02487de7 PC |
1113 | &block->code_size); |
1114 | if (!block->function) | |
1115 | goto err_free_block; | |
d16005f8 PC |
1116 | |
1117 | state->eob_wrapper_func = jit_address(addr2); | |
98fa08a5 PC |
1118 | if (OPT_REPLACE_MEMSET) |
1119 | state->memset_func = jit_address(addr3); | |
d16005f8 PC |
1120 | state->get_next_block = jit_address(addr); |
1121 | ||
1122 | if (ENABLE_DISASSEMBLER) { | |
1123 | pr_debug("Dispatcher block:\n"); | |
1124 | jit_disassemble(); | |
1125 | } | |
1126 | ||
1127 | /* We're done! */ | |
1128 | jit_clear_state(); | |
1129 | return block; | |
1130 | ||
1131 | err_free_block: | |
1132 | lightrec_free(state, MEM_FOR_IR, sizeof(*block), block); | |
1133 | err_no_mem: | |
1134 | pr_err("Unable to compile dispatcher: Out of memory\n"); | |
1135 | return NULL; | |
1136 | } | |
1137 | ||
1138 | union code lightrec_read_opcode(struct lightrec_state *state, u32 pc) | |
1139 | { | |
fd58fa32 | 1140 | void *host = NULL; |
d16005f8 | 1141 | |
98fa08a5 | 1142 | lightrec_get_map(state, &host, kunseg(pc)); |
d16005f8 | 1143 | |
98fa08a5 | 1144 | const u32 *code = (u32 *)host; |
02487de7 | 1145 | return (union code) LE32TOH(*code); |
98fa08a5 | 1146 | } |
d16005f8 | 1147 | |
98fa08a5 PC |
1148 | unsigned int lightrec_cycles_of_opcode(union code code) |
1149 | { | |
1150 | return 2; | |
1151 | } | |
d16005f8 | 1152 | |
ba3814c1 | 1153 | void lightrec_free_opcode_list(struct lightrec_state *state, struct opcode *ops) |
98fa08a5 | 1154 | { |
ba3814c1 PC |
1155 | struct opcode_list *list = container_of(ops, struct opcode_list, ops); |
1156 | ||
98fa08a5 | 1157 | lightrec_free(state, MEM_FOR_IR, |
ba3814c1 PC |
1158 | sizeof(*list) + list->nb_ops * sizeof(struct opcode), |
1159 | list); | |
98fa08a5 PC |
1160 | } |
1161 | ||
1162 | static unsigned int lightrec_get_mips_block_len(const u32 *src) | |
1163 | { | |
1164 | unsigned int i; | |
1165 | union code c; | |
1166 | ||
1167 | for (i = 1; ; i++) { | |
1168 | c.opcode = LE32TOH(*src++); | |
1169 | ||
1170 | if (is_syscall(c)) | |
1171 | return i; | |
1172 | ||
1173 | if (is_unconditional_jump(c)) | |
1174 | return i + 1; | |
1175 | } | |
1176 | } | |
1177 | ||
1178 | static struct opcode * lightrec_disassemble(struct lightrec_state *state, | |
1179 | const u32 *src, unsigned int *len) | |
1180 | { | |
ba3814c1 | 1181 | struct opcode_list *list; |
98fa08a5 PC |
1182 | unsigned int i, length; |
1183 | ||
1184 | length = lightrec_get_mips_block_len(src); | |
1185 | ||
ba3814c1 PC |
1186 | list = lightrec_malloc(state, MEM_FOR_IR, |
1187 | sizeof(*list) + sizeof(struct opcode) * length); | |
98fa08a5 PC |
1188 | if (!list) { |
1189 | pr_err("Unable to allocate memory\n"); | |
1190 | return NULL; | |
1191 | } | |
1192 | ||
ba3814c1 PC |
1193 | list->nb_ops = (u16) length; |
1194 | ||
98fa08a5 | 1195 | for (i = 0; i < length; i++) { |
ba3814c1 PC |
1196 | list->ops[i].opcode = LE32TOH(src[i]); |
1197 | list->ops[i].flags = 0; | |
98fa08a5 PC |
1198 | } |
1199 | ||
1200 | *len = length * sizeof(u32); | |
1201 | ||
ba3814c1 | 1202 | return list->ops; |
d16005f8 PC |
1203 | } |
1204 | ||
1205 | static struct block * lightrec_precompile_block(struct lightrec_state *state, | |
1206 | u32 pc) | |
1207 | { | |
1208 | struct opcode *list; | |
1209 | struct block *block; | |
ba3814c1 | 1210 | void *host, *addr; |
98fa08a5 PC |
1211 | const struct lightrec_mem_map *map = lightrec_get_map(state, &host, kunseg(pc)); |
1212 | const u32 *code = (u32 *) host; | |
d16005f8 | 1213 | unsigned int length; |
98fa08a5 | 1214 | bool fully_tagged; |
ba3814c1 | 1215 | u8 block_flags = 0; |
d16005f8 PC |
1216 | |
1217 | if (!map) | |
1218 | return NULL; | |
1219 | ||
d16005f8 PC |
1220 | block = lightrec_malloc(state, MEM_FOR_IR, sizeof(*block)); |
1221 | if (!block) { | |
1222 | pr_err("Unable to recompile block: Out of memory\n"); | |
1223 | return NULL; | |
1224 | } | |
1225 | ||
1226 | list = lightrec_disassemble(state, code, &length); | |
1227 | if (!list) { | |
1228 | lightrec_free(state, MEM_FOR_IR, sizeof(*block), block); | |
1229 | return NULL; | |
1230 | } | |
1231 | ||
1232 | block->pc = pc; | |
d16005f8 PC |
1233 | block->_jit = NULL; |
1234 | block->function = NULL; | |
1235 | block->opcode_list = list; | |
98fa08a5 | 1236 | block->code = code; |
d16005f8 PC |
1237 | block->next = NULL; |
1238 | block->flags = 0; | |
1239 | block->code_size = 0; | |
d8b04acd | 1240 | block->precompile_date = state->current_cycle; |
d16005f8 PC |
1241 | block->nb_ops = length / sizeof(u32); |
1242 | ||
98fa08a5 | 1243 | lightrec_optimize(state, block); |
d16005f8 PC |
1244 | |
1245 | length = block->nb_ops * sizeof(u32); | |
1246 | ||
1247 | lightrec_register(MEM_FOR_MIPS_CODE, length); | |
1248 | ||
1249 | if (ENABLE_DISASSEMBLER) { | |
98fa08a5 PC |
1250 | pr_debug("Disassembled block at PC: 0x%08x\n", block->pc); |
1251 | lightrec_print_disassembly(block, code); | |
d16005f8 PC |
1252 | } |
1253 | ||
98fa08a5 | 1254 | pr_debug("Block size: %hu opcodes\n", block->nb_ops); |
d16005f8 PC |
1255 | |
1256 | /* If the first opcode is an 'impossible' branch, never compile the | |
1257 | * block */ | |
98fa08a5 | 1258 | if (should_emulate(block->opcode_list)) |
ba3814c1 | 1259 | block_flags |= BLOCK_NEVER_COMPILE; |
d16005f8 | 1260 | |
98fa08a5 PC |
1261 | fully_tagged = lightrec_block_is_fully_tagged(block); |
1262 | if (fully_tagged) | |
ba3814c1 | 1263 | block_flags |= BLOCK_FULLY_TAGGED; |
98fa08a5 | 1264 | |
ba3814c1 PC |
1265 | if (block_flags) |
1266 | block_set_flags(block, block_flags); | |
98fa08a5 | 1267 | |
d16005f8 PC |
1268 | block->hash = lightrec_calculate_block_hash(block); |
1269 | ||
ba3814c1 PC |
1270 | if (OPT_REPLACE_MEMSET && block_has_flag(block, BLOCK_IS_MEMSET)) |
1271 | addr = state->memset_func; | |
1272 | else | |
1273 | addr = state->get_next_block; | |
1274 | lut_write(state, lut_offset(pc), addr); | |
1275 | ||
a59e5536 | 1276 | pr_debug("Recompile count: %u\n", state->nb_precompile++); |
1277 | ||
d16005f8 PC |
1278 | return block; |
1279 | } | |
1280 | ||
98fa08a5 | 1281 | static bool lightrec_block_is_fully_tagged(const struct block *block) |
d16005f8 | 1282 | { |
98fa08a5 PC |
1283 | const struct opcode *op; |
1284 | unsigned int i; | |
1285 | ||
1286 | for (i = 0; i < block->nb_ops; i++) { | |
1287 | op = &block->opcode_list[i]; | |
d16005f8 | 1288 | |
d16005f8 PC |
1289 | /* Verify that all load/stores of the opcode list |
1290 | * Check all loads/stores of the opcode list and mark the | |
1291 | * block as fully compiled if they all have been tagged. */ | |
1292 | switch (op->c.i.op) { | |
1293 | case OP_LB: | |
1294 | case OP_LH: | |
1295 | case OP_LWL: | |
1296 | case OP_LW: | |
1297 | case OP_LBU: | |
1298 | case OP_LHU: | |
1299 | case OP_LWR: | |
1300 | case OP_SB: | |
1301 | case OP_SH: | |
1302 | case OP_SWL: | |
1303 | case OP_SW: | |
1304 | case OP_SWR: | |
1305 | case OP_LWC2: | |
1306 | case OP_SWC2: | |
22eee2ac | 1307 | if (!LIGHTREC_FLAGS_GET_IO_MODE(op->flags)) |
d16005f8 | 1308 | return false; |
d8b04acd PC |
1309 | fallthrough; |
1310 | default: | |
d16005f8 PC |
1311 | continue; |
1312 | } | |
1313 | } | |
1314 | ||
1315 | return true; | |
1316 | } | |
1317 | ||
98fa08a5 | 1318 | static void lightrec_reap_block(struct lightrec_state *state, void *data) |
a59e5536 | 1319 | { |
1320 | struct block *block = data; | |
1321 | ||
1322 | pr_debug("Reap dead block at PC 0x%08x\n", block->pc); | |
98fa08a5 PC |
1323 | lightrec_unregister_block(state->block_cache, block); |
1324 | lightrec_free_block(state, block); | |
a59e5536 | 1325 | } |
1326 | ||
98fa08a5 | 1327 | static void lightrec_reap_jit(struct lightrec_state *state, void *data) |
a59e5536 | 1328 | { |
1329 | _jit_destroy_state(data); | |
1330 | } | |
1331 | ||
02487de7 PC |
1332 | static void lightrec_free_function(struct lightrec_state *state, void *fn) |
1333 | { | |
1334 | if (ENABLE_CODE_BUFFER && state->tlsf) { | |
1335 | pr_debug("Freeing code block at 0x%" PRIxPTR "\n", (uintptr_t) fn); | |
d8b04acd | 1336 | lightrec_free_code(state, fn); |
02487de7 PC |
1337 | } |
1338 | } | |
1339 | ||
1340 | static void lightrec_reap_function(struct lightrec_state *state, void *data) | |
1341 | { | |
1342 | lightrec_free_function(state, data); | |
1343 | } | |
1344 | ||
ba3814c1 PC |
1345 | static void lightrec_reap_opcode_list(struct lightrec_state *state, void *data) |
1346 | { | |
1347 | lightrec_free_opcode_list(state, data); | |
1348 | } | |
1349 | ||
98fa08a5 PC |
1350 | int lightrec_compile_block(struct lightrec_cstate *cstate, |
1351 | struct block *block) | |
d16005f8 | 1352 | { |
98fa08a5 | 1353 | struct lightrec_state *state = cstate->state; |
a59e5536 | 1354 | struct lightrec_branch_target *target; |
ba3814c1 | 1355 | bool fully_tagged = false; |
a59e5536 | 1356 | struct block *block2; |
d16005f8 | 1357 | struct opcode *elm; |
a59e5536 | 1358 | jit_state_t *_jit, *oldjit; |
d16005f8 PC |
1359 | jit_node_t *start_of_block; |
1360 | bool skip_next = false; | |
d8b04acd | 1361 | void *old_fn, *new_fn; |
ba3814c1 | 1362 | size_t old_code_size; |
d16005f8 | 1363 | unsigned int i, j; |
ba3814c1 | 1364 | u8 old_flags; |
98fa08a5 | 1365 | u32 offset; |
d16005f8 PC |
1366 | |
1367 | fully_tagged = lightrec_block_is_fully_tagged(block); | |
1368 | if (fully_tagged) | |
ba3814c1 | 1369 | block_set_flags(block, BLOCK_FULLY_TAGGED); |
d16005f8 PC |
1370 | |
1371 | _jit = jit_new_state(); | |
1372 | if (!_jit) | |
1373 | return -ENOMEM; | |
1374 | ||
a59e5536 | 1375 | oldjit = block->_jit; |
02487de7 | 1376 | old_fn = block->function; |
ba3814c1 | 1377 | old_code_size = block->code_size; |
d16005f8 PC |
1378 | block->_jit = _jit; |
1379 | ||
98fa08a5 PC |
1380 | lightrec_regcache_reset(cstate->reg_cache); |
1381 | cstate->cycles = 0; | |
98fa08a5 PC |
1382 | cstate->nb_local_branches = 0; |
1383 | cstate->nb_targets = 0; | |
d16005f8 PC |
1384 | |
1385 | jit_prolog(); | |
1386 | jit_tramp(256); | |
1387 | ||
1388 | start_of_block = jit_label(); | |
1389 | ||
98fa08a5 PC |
1390 | for (i = 0; i < block->nb_ops; i++) { |
1391 | elm = &block->opcode_list[i]; | |
d16005f8 PC |
1392 | |
1393 | if (skip_next) { | |
1394 | skip_next = false; | |
1395 | continue; | |
1396 | } | |
1397 | ||
98fa08a5 | 1398 | if (should_emulate(elm)) { |
d16005f8 | 1399 | pr_debug("Branch at offset 0x%x will be emulated\n", |
98fa08a5 PC |
1400 | i << 2); |
1401 | ||
1402 | lightrec_emit_eob(cstate, block, i, false); | |
03535202 | 1403 | skip_next = !op_flag_no_ds(elm->flags); |
98fa08a5 PC |
1404 | } else { |
1405 | lightrec_rec_opcode(cstate, block, i); | |
03535202 | 1406 | skip_next = !op_flag_no_ds(elm->flags) && has_delay_slot(elm->c); |
d16005f8 PC |
1407 | #if _WIN32 |
1408 | /* FIXME: GNU Lightning on Windows seems to use our | |
1409 | * mapped registers as temporaries. Until the actual bug | |
1410 | * is found and fixed, unconditionally mark our | |
1411 | * registers as live here. */ | |
98fa08a5 | 1412 | lightrec_regcache_mark_live(cstate->reg_cache, _jit); |
d16005f8 PC |
1413 | #endif |
1414 | } | |
03535202 PC |
1415 | |
1416 | cstate->cycles += lightrec_cycles_of_opcode(elm->c); | |
d16005f8 PC |
1417 | } |
1418 | ||
98fa08a5 PC |
1419 | for (i = 0; i < cstate->nb_local_branches; i++) { |
1420 | struct lightrec_branch *branch = &cstate->local_branches[i]; | |
d16005f8 PC |
1421 | |
1422 | pr_debug("Patch local branch to offset 0x%x\n", | |
1423 | branch->target << 2); | |
1424 | ||
1425 | if (branch->target == 0) { | |
1426 | jit_patch_at(branch->branch, start_of_block); | |
1427 | continue; | |
1428 | } | |
1429 | ||
98fa08a5 PC |
1430 | for (j = 0; j < cstate->nb_targets; j++) { |
1431 | if (cstate->targets[j].offset == branch->target) { | |
d16005f8 | 1432 | jit_patch_at(branch->branch, |
98fa08a5 | 1433 | cstate->targets[j].label); |
d16005f8 PC |
1434 | break; |
1435 | } | |
1436 | } | |
1437 | ||
98fa08a5 | 1438 | if (j == cstate->nb_targets) |
d16005f8 PC |
1439 | pr_err("Unable to find branch target\n"); |
1440 | } | |
1441 | ||
d16005f8 PC |
1442 | jit_ret(); |
1443 | jit_epilog(); | |
1444 | ||
d8b04acd PC |
1445 | new_fn = lightrec_emit_code(state, block, _jit, &block->code_size); |
1446 | if (!new_fn) { | |
1447 | if (!ENABLE_THREADED_COMPILER) | |
1448 | pr_err("Unable to compile block!\n"); | |
1449 | block->_jit = oldjit; | |
ba3814c1 | 1450 | jit_clear_state(); |
d8b04acd PC |
1451 | _jit_destroy_state(_jit); |
1452 | return -ENOMEM; | |
02487de7 PC |
1453 | } |
1454 | ||
ba3814c1 PC |
1455 | /* Pause the reaper, because lightrec_reset_lut_offset() may try to set |
1456 | * the old block->function pointer to the code LUT. */ | |
1457 | if (ENABLE_THREADED_COMPILER) | |
1458 | lightrec_reaper_pause(state->reaper); | |
1459 | ||
d8b04acd | 1460 | block->function = new_fn; |
ba3814c1 | 1461 | block_clear_flags(block, BLOCK_SHOULD_RECOMPILE); |
d16005f8 PC |
1462 | |
1463 | /* Add compiled function to the LUT */ | |
02487de7 | 1464 | lut_write(state, lut_offset(block->pc), block->function); |
d16005f8 | 1465 | |
ba3814c1 PC |
1466 | if (ENABLE_THREADED_COMPILER) |
1467 | lightrec_reaper_continue(state->reaper); | |
a59e5536 | 1468 | |
1469 | /* Detect old blocks that have been covered by the new one */ | |
98fa08a5 PC |
1470 | for (i = 0; i < cstate->nb_targets; i++) { |
1471 | target = &cstate->targets[i]; | |
a59e5536 | 1472 | |
1473 | if (!target->offset) | |
1474 | continue; | |
1475 | ||
1476 | offset = block->pc + target->offset * sizeof(u32); | |
ba3814c1 PC |
1477 | |
1478 | /* Pause the reaper while we search for the block until we set | |
1479 | * the BLOCK_IS_DEAD flag, otherwise the block may be removed | |
1480 | * under our feet. */ | |
1481 | if (ENABLE_THREADED_COMPILER) | |
1482 | lightrec_reaper_pause(state->reaper); | |
1483 | ||
a59e5536 | 1484 | block2 = lightrec_find_block(state->block_cache, offset); |
1485 | if (block2) { | |
1486 | /* No need to check if block2 is compilable - it must | |
1487 | * be, otherwise block wouldn't be compilable either */ | |
1488 | ||
98fa08a5 PC |
1489 | /* Set the "block dead" flag to prevent the dynarec from |
1490 | * recompiling this block */ | |
ba3814c1 PC |
1491 | old_flags = block_set_flags(block2, BLOCK_IS_DEAD); |
1492 | } | |
1493 | ||
1494 | if (ENABLE_THREADED_COMPILER) { | |
1495 | lightrec_reaper_continue(state->reaper); | |
a59e5536 | 1496 | |
98fa08a5 PC |
1497 | /* If block2 was pending for compilation, cancel it. |
1498 | * If it's being compiled right now, wait until it | |
1499 | * finishes. */ | |
ba3814c1 | 1500 | if (block2) |
98fa08a5 | 1501 | lightrec_recompiler_remove(state->rec, block2); |
fd58fa32 | 1502 | } |
98fa08a5 | 1503 | |
fd58fa32 PC |
1504 | /* We know from now on that block2 (if present) isn't going to |
1505 | * be compiled. We can override the LUT entry with our new | |
1506 | * block's entry point. */ | |
1507 | offset = lut_offset(block->pc) + target->offset; | |
02487de7 | 1508 | lut_write(state, offset, jit_address(target->label)); |
98fa08a5 | 1509 | |
fd58fa32 | 1510 | if (block2) { |
a59e5536 | 1511 | pr_debug("Reap block 0x%08x as it's covered by block " |
1512 | "0x%08x\n", block2->pc, block->pc); | |
1513 | ||
98fa08a5 | 1514 | /* Finally, reap the block. */ |
ba3814c1 PC |
1515 | if (!ENABLE_THREADED_COMPILER) { |
1516 | lightrec_unregister_block(state->block_cache, block2); | |
1517 | lightrec_free_block(state, block2); | |
1518 | } else if (!(old_flags & BLOCK_IS_DEAD)) { | |
a59e5536 | 1519 | lightrec_reaper_add(state->reaper, |
1520 | lightrec_reap_block, | |
1521 | block2); | |
a59e5536 | 1522 | } |
1523 | } | |
1524 | } | |
1525 | ||
d16005f8 | 1526 | if (ENABLE_DISASSEMBLER) { |
98fa08a5 | 1527 | pr_debug("Compiling block at PC: 0x%08x\n", block->pc); |
d16005f8 PC |
1528 | jit_disassemble(); |
1529 | } | |
1530 | ||
1531 | jit_clear_state(); | |
1532 | ||
d16005f8 | 1533 | if (fully_tagged) |
ba3814c1 PC |
1534 | old_flags = block_set_flags(block, BLOCK_NO_OPCODE_LIST); |
1535 | ||
1536 | if (fully_tagged && !(old_flags & BLOCK_NO_OPCODE_LIST)) { | |
d16005f8 PC |
1537 | pr_debug("Block PC 0x%08x is fully tagged" |
1538 | " - free opcode list\n", block->pc); | |
ba3814c1 PC |
1539 | |
1540 | if (ENABLE_THREADED_COMPILER) { | |
1541 | lightrec_reaper_add(state->reaper, | |
1542 | lightrec_reap_opcode_list, | |
1543 | block->opcode_list); | |
1544 | } else { | |
1545 | lightrec_free_opcode_list(state, block->opcode_list); | |
1546 | } | |
d16005f8 PC |
1547 | } |
1548 | ||
a59e5536 | 1549 | if (oldjit) { |
1550 | pr_debug("Block 0x%08x recompiled, reaping old jit context.\n", | |
1551 | block->pc); | |
1552 | ||
02487de7 | 1553 | if (ENABLE_THREADED_COMPILER) { |
a59e5536 | 1554 | lightrec_reaper_add(state->reaper, |
1555 | lightrec_reap_jit, oldjit); | |
02487de7 PC |
1556 | lightrec_reaper_add(state->reaper, |
1557 | lightrec_reap_function, old_fn); | |
1558 | } else { | |
a59e5536 | 1559 | _jit_destroy_state(oldjit); |
02487de7 PC |
1560 | lightrec_free_function(state, old_fn); |
1561 | } | |
ba3814c1 PC |
1562 | |
1563 | lightrec_unregister(MEM_FOR_CODE, old_code_size); | |
a59e5536 | 1564 | } |
1565 | ||
d16005f8 PC |
1566 | return 0; |
1567 | } | |
1568 | ||
98fa08a5 PC |
1569 | static void lightrec_print_info(struct lightrec_state *state) |
1570 | { | |
1571 | if ((state->current_cycle & ~0xfffffff) != state->old_cycle_counter) { | |
1572 | pr_info("Lightrec RAM usage: IR %u KiB, CODE %u KiB, " | |
1573 | "MIPS %u KiB, TOTAL %u KiB, avg. IPI %f\n", | |
1574 | lightrec_get_mem_usage(MEM_FOR_IR) / 1024, | |
1575 | lightrec_get_mem_usage(MEM_FOR_CODE) / 1024, | |
1576 | lightrec_get_mem_usage(MEM_FOR_MIPS_CODE) / 1024, | |
1577 | lightrec_get_total_mem_usage() / 1024, | |
1578 | lightrec_get_average_ipi()); | |
1579 | state->old_cycle_counter = state->current_cycle & ~0xfffffff; | |
1580 | } | |
1581 | } | |
1582 | ||
d16005f8 PC |
1583 | u32 lightrec_execute(struct lightrec_state *state, u32 pc, u32 target_cycle) |
1584 | { | |
1585 | s32 (*func)(void *, s32) = (void *)state->dispatcher->function; | |
1586 | void *block_trace; | |
1587 | s32 cycles_delta; | |
1588 | ||
1589 | state->exit_flags = LIGHTREC_EXIT_NORMAL; | |
1590 | ||
1591 | /* Handle the cycle counter overflowing */ | |
1592 | if (unlikely(target_cycle < state->current_cycle)) | |
1593 | target_cycle = UINT_MAX; | |
1594 | ||
1595 | state->target_cycle = target_cycle; | |
98fa08a5 | 1596 | state->next_pc = pc; |
d16005f8 PC |
1597 | |
1598 | block_trace = get_next_block_func(state, pc); | |
1599 | if (block_trace) { | |
1600 | cycles_delta = state->target_cycle - state->current_cycle; | |
1601 | ||
1602 | cycles_delta = (*func)(block_trace, cycles_delta); | |
1603 | ||
1604 | state->current_cycle = state->target_cycle - cycles_delta; | |
1605 | } | |
1606 | ||
a59e5536 | 1607 | if (ENABLE_THREADED_COMPILER) |
1608 | lightrec_reaper_reap(state->reaper); | |
1609 | ||
98fa08a5 PC |
1610 | if (LOG_LEVEL >= INFO_L) |
1611 | lightrec_print_info(state); | |
1612 | ||
d16005f8 PC |
1613 | return state->next_pc; |
1614 | } | |
1615 | ||
ba3814c1 PC |
1616 | u32 lightrec_run_interpreter(struct lightrec_state *state, u32 pc, |
1617 | u32 target_cycle) | |
d16005f8 | 1618 | { |
ba3814c1 | 1619 | struct block *block; |
d16005f8 PC |
1620 | |
1621 | state->exit_flags = LIGHTREC_EXIT_NORMAL; | |
ba3814c1 PC |
1622 | state->target_cycle = target_cycle; |
1623 | ||
1624 | do { | |
1625 | block = lightrec_get_block(state, pc); | |
1626 | if (!block) | |
1627 | break; | |
1628 | ||
1629 | pc = lightrec_emulate_block(state, block, pc); | |
d16005f8 | 1630 | |
ba3814c1 PC |
1631 | if (ENABLE_THREADED_COMPILER) |
1632 | lightrec_reaper_reap(state->reaper); | |
1633 | } while (state->current_cycle < state->target_cycle); | |
98fa08a5 PC |
1634 | |
1635 | if (LOG_LEVEL >= INFO_L) | |
1636 | lightrec_print_info(state); | |
1637 | ||
1638 | return pc; | |
d16005f8 PC |
1639 | } |
1640 | ||
98fa08a5 | 1641 | void lightrec_free_block(struct lightrec_state *state, struct block *block) |
d16005f8 | 1642 | { |
ba3814c1 PC |
1643 | u8 old_flags; |
1644 | ||
d16005f8 | 1645 | lightrec_unregister(MEM_FOR_MIPS_CODE, block->nb_ops * sizeof(u32)); |
ba3814c1 PC |
1646 | old_flags = block_set_flags(block, BLOCK_NO_OPCODE_LIST); |
1647 | ||
1648 | if (!(old_flags & BLOCK_NO_OPCODE_LIST)) | |
1649 | lightrec_free_opcode_list(state, block->opcode_list); | |
d16005f8 PC |
1650 | if (block->_jit) |
1651 | _jit_destroy_state(block->_jit); | |
d8b04acd PC |
1652 | if (block->function) { |
1653 | lightrec_free_function(state, block->function); | |
1654 | lightrec_unregister(MEM_FOR_CODE, block->code_size); | |
1655 | } | |
98fa08a5 PC |
1656 | lightrec_free(state, MEM_FOR_IR, sizeof(*block), block); |
1657 | } | |
1658 | ||
1659 | struct lightrec_cstate * lightrec_create_cstate(struct lightrec_state *state) | |
1660 | { | |
1661 | struct lightrec_cstate *cstate; | |
1662 | ||
1663 | cstate = lightrec_malloc(state, MEM_FOR_LIGHTREC, sizeof(*cstate)); | |
1664 | if (!cstate) | |
1665 | return NULL; | |
1666 | ||
1667 | cstate->reg_cache = lightrec_regcache_init(state); | |
1668 | if (!cstate->reg_cache) { | |
1669 | lightrec_free(state, MEM_FOR_LIGHTREC, sizeof(*cstate), cstate); | |
1670 | return NULL; | |
1671 | } | |
1672 | ||
1673 | cstate->state = state; | |
1674 | ||
1675 | return cstate; | |
1676 | } | |
1677 | ||
1678 | void lightrec_free_cstate(struct lightrec_cstate *cstate) | |
1679 | { | |
1680 | lightrec_free_regcache(cstate->reg_cache); | |
1681 | lightrec_free(cstate->state, MEM_FOR_LIGHTREC, sizeof(*cstate), cstate); | |
d16005f8 PC |
1682 | } |
1683 | ||
1684 | struct lightrec_state * lightrec_init(char *argv0, | |
1685 | const struct lightrec_mem_map *map, | |
1686 | size_t nb, | |
1687 | const struct lightrec_ops *ops) | |
1688 | { | |
d8b04acd | 1689 | const struct lightrec_mem_map *codebuf_map = &map[PSX_MAP_CODE_BUFFER]; |
d16005f8 | 1690 | struct lightrec_state *state; |
02487de7 PC |
1691 | uintptr_t addr; |
1692 | void *tlsf = NULL; | |
1693 | bool with_32bit_lut = false; | |
1694 | size_t lut_size; | |
d16005f8 PC |
1695 | |
1696 | /* Sanity-check ops */ | |
98fa08a5 | 1697 | if (!ops || !ops->cop2_op || !ops->enable_ram) { |
d16005f8 PC |
1698 | pr_err("Missing callbacks in lightrec_ops structure\n"); |
1699 | return NULL; | |
1700 | } | |
1701 | ||
d8b04acd PC |
1702 | if (ENABLE_CODE_BUFFER && nb > PSX_MAP_CODE_BUFFER |
1703 | && codebuf_map->address) { | |
02487de7 PC |
1704 | tlsf = tlsf_create_with_pool(codebuf_map->address, |
1705 | codebuf_map->length); | |
1706 | if (!tlsf) { | |
1707 | pr_err("Unable to initialize code buffer\n"); | |
1708 | return NULL; | |
1709 | } | |
1710 | ||
1711 | if (__WORDSIZE == 64) { | |
1712 | addr = (uintptr_t) codebuf_map->address + codebuf_map->length - 1; | |
1713 | with_32bit_lut = addr == (u32) addr; | |
1714 | } | |
1715 | } | |
1716 | ||
1717 | if (with_32bit_lut) | |
1718 | lut_size = CODE_LUT_SIZE * 4; | |
1719 | else | |
1720 | lut_size = CODE_LUT_SIZE * sizeof(void *); | |
1721 | ||
d16005f8 PC |
1722 | init_jit(argv0); |
1723 | ||
02487de7 | 1724 | state = calloc(1, sizeof(*state) + lut_size); |
d16005f8 PC |
1725 | if (!state) |
1726 | goto err_finish_jit; | |
1727 | ||
02487de7 PC |
1728 | lightrec_register(MEM_FOR_LIGHTREC, sizeof(*state) + lut_size); |
1729 | ||
1730 | state->tlsf = tlsf; | |
1731 | state->with_32bit_lut = with_32bit_lut; | |
d16005f8 | 1732 | |
d16005f8 PC |
1733 | state->block_cache = lightrec_blockcache_init(state); |
1734 | if (!state->block_cache) | |
d8b04acd | 1735 | goto err_free_state; |
d16005f8 | 1736 | |
d16005f8 PC |
1737 | if (ENABLE_THREADED_COMPILER) { |
1738 | state->rec = lightrec_recompiler_init(state); | |
1739 | if (!state->rec) | |
98fa08a5 | 1740 | goto err_free_block_cache; |
a59e5536 | 1741 | |
1742 | state->reaper = lightrec_reaper_init(state); | |
1743 | if (!state->reaper) | |
1744 | goto err_free_recompiler; | |
98fa08a5 PC |
1745 | } else { |
1746 | state->cstate = lightrec_create_cstate(state); | |
1747 | if (!state->cstate) | |
1748 | goto err_free_block_cache; | |
d16005f8 PC |
1749 | } |
1750 | ||
1751 | state->nb_maps = nb; | |
1752 | state->maps = map; | |
1753 | ||
1754 | memcpy(&state->ops, ops, sizeof(*ops)); | |
1755 | ||
1756 | state->dispatcher = generate_dispatcher(state); | |
1757 | if (!state->dispatcher) | |
a59e5536 | 1758 | goto err_free_reaper; |
d16005f8 | 1759 | |
98fa08a5 PC |
1760 | state->c_wrapper_block = generate_wrapper(state); |
1761 | if (!state->c_wrapper_block) | |
d16005f8 PC |
1762 | goto err_free_dispatcher; |
1763 | ||
98fa08a5 PC |
1764 | state->c_wrappers[C_WRAPPER_RW] = lightrec_rw_cb; |
1765 | state->c_wrappers[C_WRAPPER_RW_GENERIC] = lightrec_rw_generic_cb; | |
98fa08a5 | 1766 | state->c_wrappers[C_WRAPPER_MTC] = lightrec_mtc_cb; |
22eee2ac | 1767 | state->c_wrappers[C_WRAPPER_CP] = lightrec_cp_cb; |
d16005f8 PC |
1768 | |
1769 | map = &state->maps[PSX_MAP_BIOS]; | |
1770 | state->offset_bios = (uintptr_t)map->address - map->pc; | |
1771 | ||
1772 | map = &state->maps[PSX_MAP_SCRATCH_PAD]; | |
1773 | state->offset_scratch = (uintptr_t)map->address - map->pc; | |
1774 | ||
ba3814c1 PC |
1775 | map = &state->maps[PSX_MAP_HW_REGISTERS]; |
1776 | state->offset_io = (uintptr_t)map->address - map->pc; | |
1777 | ||
d16005f8 PC |
1778 | map = &state->maps[PSX_MAP_KERNEL_USER_RAM]; |
1779 | state->offset_ram = (uintptr_t)map->address - map->pc; | |
1780 | ||
1781 | if (state->maps[PSX_MAP_MIRROR1].address == map->address + 0x200000 && | |
1782 | state->maps[PSX_MAP_MIRROR2].address == map->address + 0x400000 && | |
1783 | state->maps[PSX_MAP_MIRROR3].address == map->address + 0x600000) | |
1784 | state->mirrors_mapped = true; | |
1785 | ||
98fa08a5 PC |
1786 | if (state->offset_bios == 0 && |
1787 | state->offset_scratch == 0 && | |
1788 | state->offset_ram == 0 && | |
ba3814c1 | 1789 | state->offset_io == 0 && |
98fa08a5 PC |
1790 | state->mirrors_mapped) { |
1791 | pr_info("Memory map is perfect. Emitted code will be best.\n"); | |
1792 | } else { | |
1793 | pr_info("Memory map is sub-par. Emitted code will be slow.\n"); | |
1794 | } | |
1795 | ||
02487de7 PC |
1796 | if (state->with_32bit_lut) |
1797 | pr_info("Using 32-bit LUT\n"); | |
1798 | ||
d16005f8 PC |
1799 | return state; |
1800 | ||
d16005f8 | 1801 | err_free_dispatcher: |
98fa08a5 | 1802 | lightrec_free_block(state, state->dispatcher); |
a59e5536 | 1803 | err_free_reaper: |
1804 | if (ENABLE_THREADED_COMPILER) | |
1805 | lightrec_reaper_destroy(state->reaper); | |
d16005f8 PC |
1806 | err_free_recompiler: |
1807 | if (ENABLE_THREADED_COMPILER) | |
1808 | lightrec_free_recompiler(state->rec); | |
98fa08a5 PC |
1809 | else |
1810 | lightrec_free_cstate(state->cstate); | |
d16005f8 PC |
1811 | err_free_block_cache: |
1812 | lightrec_free_block_cache(state->block_cache); | |
d16005f8 | 1813 | err_free_state: |
d16005f8 | 1814 | lightrec_unregister(MEM_FOR_LIGHTREC, sizeof(*state) + |
02487de7 | 1815 | lut_elm_size(state) * CODE_LUT_SIZE); |
d16005f8 PC |
1816 | free(state); |
1817 | err_finish_jit: | |
1818 | finish_jit(); | |
02487de7 PC |
1819 | if (ENABLE_CODE_BUFFER && tlsf) |
1820 | tlsf_destroy(tlsf); | |
d16005f8 PC |
1821 | return NULL; |
1822 | } | |
1823 | ||
1824 | void lightrec_destroy(struct lightrec_state *state) | |
1825 | { | |
98fa08a5 PC |
1826 | /* Force a print info on destroy*/ |
1827 | state->current_cycle = ~state->current_cycle; | |
1828 | lightrec_print_info(state); | |
1829 | ||
03535202 PC |
1830 | lightrec_free_block_cache(state->block_cache); |
1831 | lightrec_free_block(state, state->dispatcher); | |
1832 | lightrec_free_block(state, state->c_wrapper_block); | |
1833 | ||
a59e5536 | 1834 | if (ENABLE_THREADED_COMPILER) { |
d16005f8 | 1835 | lightrec_free_recompiler(state->rec); |
a59e5536 | 1836 | lightrec_reaper_destroy(state->reaper); |
98fa08a5 PC |
1837 | } else { |
1838 | lightrec_free_cstate(state->cstate); | |
a59e5536 | 1839 | } |
d16005f8 | 1840 | |
d16005f8 | 1841 | finish_jit(); |
02487de7 PC |
1842 | if (ENABLE_CODE_BUFFER && state->tlsf) |
1843 | tlsf_destroy(state->tlsf); | |
d16005f8 | 1844 | |
d16005f8 | 1845 | lightrec_unregister(MEM_FOR_LIGHTREC, sizeof(*state) + |
02487de7 | 1846 | lut_elm_size(state) * CODE_LUT_SIZE); |
d16005f8 PC |
1847 | free(state); |
1848 | } | |
1849 | ||
1850 | void lightrec_invalidate(struct lightrec_state *state, u32 addr, u32 len) | |
1851 | { | |
1852 | u32 kaddr = kunseg(addr & ~0x3); | |
d8b04acd | 1853 | enum psx_map idx = lightrec_get_map_idx(state, kaddr); |
d16005f8 | 1854 | |
d8b04acd PC |
1855 | switch (idx) { |
1856 | case PSX_MAP_MIRROR1: | |
1857 | case PSX_MAP_MIRROR2: | |
1858 | case PSX_MAP_MIRROR3: | |
d16005f8 | 1859 | /* Handle mirrors */ |
d8b04acd PC |
1860 | kaddr &= RAM_SIZE - 1; |
1861 | fallthrough; | |
1862 | case PSX_MAP_KERNEL_USER_RAM: | |
1863 | break; | |
1864 | default: | |
1865 | return; | |
d16005f8 | 1866 | } |
d8b04acd PC |
1867 | |
1868 | memset(lut_address(state, lut_offset(kaddr)), 0, | |
1869 | ((len + 3) / 4) * lut_elm_size(state)); | |
d16005f8 PC |
1870 | } |
1871 | ||
1872 | void lightrec_invalidate_all(struct lightrec_state *state) | |
1873 | { | |
02487de7 | 1874 | memset(state->code_lut, 0, lut_elm_size(state) * CODE_LUT_SIZE); |
d16005f8 PC |
1875 | } |
1876 | ||
1877 | void lightrec_set_invalidate_mode(struct lightrec_state *state, bool dma_only) | |
1878 | { | |
1879 | if (state->invalidate_from_dma_only != dma_only) | |
1880 | lightrec_invalidate_all(state); | |
1881 | ||
1882 | state->invalidate_from_dma_only = dma_only; | |
1883 | } | |
1884 | ||
1885 | void lightrec_set_exit_flags(struct lightrec_state *state, u32 flags) | |
1886 | { | |
1887 | if (flags != LIGHTREC_EXIT_NORMAL) { | |
1888 | state->exit_flags |= flags; | |
1889 | state->target_cycle = state->current_cycle; | |
1890 | } | |
1891 | } | |
1892 | ||
1893 | u32 lightrec_exit_flags(struct lightrec_state *state) | |
1894 | { | |
1895 | return state->exit_flags; | |
1896 | } | |
1897 | ||
d16005f8 PC |
1898 | u32 lightrec_current_cycle_count(const struct lightrec_state *state) |
1899 | { | |
1900 | return state->current_cycle; | |
1901 | } | |
1902 | ||
1903 | void lightrec_reset_cycle_count(struct lightrec_state *state, u32 cycles) | |
1904 | { | |
1905 | state->current_cycle = cycles; | |
1906 | ||
1907 | if (state->target_cycle < cycles) | |
1908 | state->target_cycle = cycles; | |
1909 | } | |
1910 | ||
1911 | void lightrec_set_target_cycle_count(struct lightrec_state *state, u32 cycles) | |
1912 | { | |
1913 | if (state->exit_flags == LIGHTREC_EXIT_NORMAL) { | |
1914 | if (cycles < state->current_cycle) | |
1915 | cycles = state->current_cycle; | |
1916 | ||
1917 | state->target_cycle = cycles; | |
1918 | } | |
1919 | } | |
98fa08a5 PC |
1920 | |
1921 | struct lightrec_registers * lightrec_get_registers(struct lightrec_state *state) | |
1922 | { | |
1923 | return &state->regs; | |
1924 | } |