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d16005f8 PC |
1 | /* |
2 | * Copyright (C) 2014-2020 Paul Cercueil <paul@crapouillou.net> | |
3 | * | |
4 | * This library is free software; you can redistribute it and/or | |
5 | * modify it under the terms of the GNU Lesser General Public | |
6 | * License as published by the Free Software Foundation; either | |
7 | * version 2.1 of the License, or (at your option) any later version. | |
8 | * | |
9 | * This library is distributed in the hope that it will be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
12 | * Lesser General Public License for more details. | |
13 | */ | |
14 | ||
15 | #include "blockcache.h" | |
16 | #include "config.h" | |
17 | #include "debug.h" | |
18 | #include "disassembler.h" | |
19 | #include "emitter.h" | |
20 | #include "interpreter.h" | |
21 | #include "lightrec.h" | |
22 | #include "memmanager.h" | |
a59e5536 | 23 | #include "reaper.h" |
d16005f8 PC |
24 | #include "recompiler.h" |
25 | #include "regcache.h" | |
26 | #include "optimizer.h" | |
27 | ||
28 | #include <errno.h> | |
29 | #include <lightning.h> | |
30 | #include <limits.h> | |
31 | #if ENABLE_THREADED_COMPILER | |
32 | #include <stdatomic.h> | |
33 | #endif | |
34 | #include <stdbool.h> | |
35 | #include <stddef.h> | |
36 | #include <string.h> | |
37 | #if ENABLE_TINYMM | |
38 | #include <tinymm.h> | |
39 | #endif | |
40 | ||
41 | #define GENMASK(h, l) \ | |
42 | (((uintptr_t)-1 << (l)) & ((uintptr_t)-1 >> (__WORDSIZE - 1 - (h)))) | |
43 | ||
44 | static struct block * lightrec_precompile_block(struct lightrec_state *state, | |
45 | u32 pc); | |
46 | ||
a59e5536 | 47 | static void lightrec_default_sb(struct lightrec_state *state, u32 opcode, |
48 | void *host, u32 addr, u8 data) | |
49 | { | |
50 | *(u8 *)host = data; | |
51 | ||
52 | if (!state->invalidate_from_dma_only) | |
53 | lightrec_invalidate(state, addr, 1); | |
54 | } | |
55 | ||
56 | static void lightrec_default_sh(struct lightrec_state *state, u32 opcode, | |
57 | void *host, u32 addr, u16 data) | |
58 | { | |
59 | *(u16 *)host = HTOLE16(data); | |
60 | ||
61 | if (!state->invalidate_from_dma_only) | |
62 | lightrec_invalidate(state, addr, 2); | |
63 | } | |
64 | ||
65 | static void lightrec_default_sw(struct lightrec_state *state, u32 opcode, | |
66 | void *host, u32 addr, u32 data) | |
67 | { | |
68 | *(u32 *)host = HTOLE32(data); | |
69 | ||
70 | if (!state->invalidate_from_dma_only) | |
71 | lightrec_invalidate(state, addr, 4); | |
72 | } | |
73 | ||
74 | static u8 lightrec_default_lb(struct lightrec_state *state, | |
75 | u32 opcode, void *host, u32 addr) | |
76 | { | |
77 | return *(u8 *)host; | |
78 | } | |
79 | ||
80 | static u16 lightrec_default_lh(struct lightrec_state *state, | |
81 | u32 opcode, void *host, u32 addr) | |
82 | { | |
83 | return LE16TOH(*(u16 *)host); | |
84 | } | |
85 | ||
86 | static u32 lightrec_default_lw(struct lightrec_state *state, | |
87 | u32 opcode, void *host, u32 addr) | |
88 | { | |
89 | return LE32TOH(*(u32 *)host); | |
90 | } | |
91 | ||
92 | static const struct lightrec_mem_map_ops lightrec_default_ops = { | |
93 | .sb = lightrec_default_sb, | |
94 | .sh = lightrec_default_sh, | |
95 | .sw = lightrec_default_sw, | |
96 | .lb = lightrec_default_lb, | |
97 | .lh = lightrec_default_lh, | |
98 | .lw = lightrec_default_lw, | |
99 | }; | |
100 | ||
d16005f8 PC |
101 | static void __segfault_cb(struct lightrec_state *state, u32 addr) |
102 | { | |
103 | lightrec_set_exit_flags(state, LIGHTREC_EXIT_SEGFAULT); | |
104 | pr_err("Segmentation fault in recompiled code: invalid " | |
105 | "load/store at address 0x%08x\n", addr); | |
106 | } | |
107 | ||
a59e5536 | 108 | static void lightrec_swl(struct lightrec_state *state, |
109 | const struct lightrec_mem_map_ops *ops, | |
110 | u32 opcode, void *host, u32 addr, u32 data) | |
d16005f8 | 111 | { |
a59e5536 | 112 | unsigned int shift = addr & 0x3; |
113 | unsigned int mask = GENMASK(31, (shift + 1) * 8); | |
114 | u32 old_data; | |
115 | ||
116 | /* Align to 32 bits */ | |
117 | addr &= ~3; | |
118 | host = (void *)((uintptr_t)host & ~3); | |
119 | ||
120 | old_data = ops->lw(state, opcode, host, addr); | |
121 | ||
122 | data = (data >> ((3 - shift) * 8)) | (old_data & mask); | |
123 | ||
124 | ops->sw(state, opcode, host, addr, data); | |
125 | } | |
126 | ||
127 | static void lightrec_swr(struct lightrec_state *state, | |
128 | const struct lightrec_mem_map_ops *ops, | |
129 | u32 opcode, void *host, u32 addr, u32 data) | |
130 | { | |
131 | unsigned int shift = addr & 0x3; | |
132 | unsigned int mask = (1 << (shift * 8)) - 1; | |
133 | u32 old_data; | |
134 | ||
135 | /* Align to 32 bits */ | |
136 | addr &= ~3; | |
137 | host = (void *)((uintptr_t)host & ~3); | |
138 | ||
139 | old_data = ops->lw(state, opcode, host, addr); | |
140 | ||
141 | data = (data << (shift * 8)) | (old_data & mask); | |
142 | ||
143 | ops->sw(state, opcode, host, addr, data); | |
144 | } | |
145 | ||
146 | static void lightrec_swc2(struct lightrec_state *state, union code op, | |
147 | const struct lightrec_mem_map_ops *ops, | |
148 | void *host, u32 addr) | |
149 | { | |
150 | u32 data = state->ops.cop2_ops.mfc(state, op.opcode, op.i.rt); | |
151 | ||
152 | ops->sw(state, op.opcode, host, addr, data); | |
153 | } | |
154 | ||
155 | static u32 lightrec_lwl(struct lightrec_state *state, | |
156 | const struct lightrec_mem_map_ops *ops, | |
157 | u32 opcode, void *host, u32 addr, u32 data) | |
158 | { | |
159 | unsigned int shift = addr & 0x3; | |
160 | unsigned int mask = (1 << (24 - shift * 8)) - 1; | |
161 | u32 old_data; | |
162 | ||
163 | /* Align to 32 bits */ | |
164 | addr &= ~3; | |
165 | host = (void *)((uintptr_t)host & ~3); | |
166 | ||
167 | old_data = ops->lw(state, opcode, host, addr); | |
168 | ||
169 | return (data & mask) | (old_data << (24 - shift * 8)); | |
170 | } | |
171 | ||
172 | static u32 lightrec_lwr(struct lightrec_state *state, | |
173 | const struct lightrec_mem_map_ops *ops, | |
174 | u32 opcode, void *host, u32 addr, u32 data) | |
175 | { | |
176 | unsigned int shift = addr & 0x3; | |
177 | unsigned int mask = GENMASK(31, 32 - shift * 8); | |
178 | u32 old_data; | |
179 | ||
180 | /* Align to 32 bits */ | |
181 | addr &= ~3; | |
182 | host = (void *)((uintptr_t)host & ~3); | |
183 | ||
184 | old_data = ops->lw(state, opcode, host, addr); | |
185 | ||
186 | return (data & mask) | (old_data >> (shift * 8)); | |
187 | } | |
188 | ||
189 | static void lightrec_lwc2(struct lightrec_state *state, union code op, | |
190 | const struct lightrec_mem_map_ops *ops, | |
191 | void *host, u32 addr) | |
192 | { | |
193 | u32 data = ops->lw(state, op.opcode, host, addr); | |
194 | ||
195 | state->ops.cop2_ops.mtc(state, op.opcode, op.i.rt, data); | |
d16005f8 PC |
196 | } |
197 | ||
198 | static void lightrec_invalidate_map(struct lightrec_state *state, | |
199 | const struct lightrec_mem_map *map, u32 addr) | |
200 | { | |
201 | if (map == &state->maps[PSX_MAP_KERNEL_USER_RAM]) | |
202 | state->code_lut[lut_offset(addr)] = NULL; | |
203 | } | |
204 | ||
205 | static const struct lightrec_mem_map * | |
206 | lightrec_get_map(struct lightrec_state *state, u32 kaddr) | |
207 | { | |
208 | unsigned int i; | |
209 | ||
210 | for (i = 0; i < state->nb_maps; i++) { | |
211 | const struct lightrec_mem_map *map = &state->maps[i]; | |
212 | ||
213 | if (kaddr >= map->pc && kaddr < map->pc + map->length) | |
214 | return map; | |
215 | } | |
216 | ||
217 | return NULL; | |
218 | } | |
219 | ||
220 | u32 lightrec_rw(struct lightrec_state *state, union code op, | |
221 | u32 addr, u32 data, u16 *flags) | |
222 | { | |
223 | const struct lightrec_mem_map *map; | |
a59e5536 | 224 | const struct lightrec_mem_map_ops *ops; |
225 | u32 kaddr, pc, opcode = op.opcode; | |
226 | void *host; | |
d16005f8 PC |
227 | |
228 | addr += (s16) op.i.imm; | |
229 | kaddr = kunseg(addr); | |
230 | ||
231 | map = lightrec_get_map(state, kaddr); | |
232 | if (!map) { | |
233 | __segfault_cb(state, addr); | |
234 | return 0; | |
235 | } | |
236 | ||
237 | pc = map->pc; | |
238 | ||
a59e5536 | 239 | while (map->mirror_of) |
240 | map = map->mirror_of; | |
241 | ||
242 | host = (void *)((uintptr_t)map->address + kaddr - pc); | |
243 | ||
d16005f8 PC |
244 | if (unlikely(map->ops)) { |
245 | if (flags) | |
246 | *flags |= LIGHTREC_HW_IO; | |
247 | ||
a59e5536 | 248 | ops = map->ops; |
249 | } else { | |
250 | if (flags) | |
251 | *flags |= LIGHTREC_DIRECT_IO; | |
d16005f8 | 252 | |
a59e5536 | 253 | ops = &lightrec_default_ops; |
254 | } | |
d16005f8 PC |
255 | |
256 | switch (op.i.op) { | |
257 | case OP_SB: | |
a59e5536 | 258 | ops->sb(state, opcode, host, addr, (u8) data); |
d16005f8 PC |
259 | return 0; |
260 | case OP_SH: | |
a59e5536 | 261 | ops->sh(state, opcode, host, addr, (u16) data); |
d16005f8 PC |
262 | return 0; |
263 | case OP_SWL: | |
a59e5536 | 264 | lightrec_swl(state, ops, opcode, host, addr, data); |
d16005f8 PC |
265 | return 0; |
266 | case OP_SWR: | |
a59e5536 | 267 | lightrec_swr(state, ops, opcode, host, addr, data); |
d16005f8 PC |
268 | return 0; |
269 | case OP_SW: | |
a59e5536 | 270 | ops->sw(state, opcode, host, addr, data); |
d16005f8 PC |
271 | return 0; |
272 | case OP_SWC2: | |
a59e5536 | 273 | lightrec_swc2(state, op, ops, host, addr); |
d16005f8 PC |
274 | return 0; |
275 | case OP_LB: | |
a59e5536 | 276 | return (s32) (s8) ops->lb(state, opcode, host, addr); |
d16005f8 | 277 | case OP_LBU: |
a59e5536 | 278 | return ops->lb(state, opcode, host, addr); |
d16005f8 | 279 | case OP_LH: |
a59e5536 | 280 | return (s32) (s16) ops->lh(state, opcode, host, addr); |
d16005f8 | 281 | case OP_LHU: |
a59e5536 | 282 | return ops->lh(state, opcode, host, addr); |
d16005f8 | 283 | case OP_LWC2: |
a59e5536 | 284 | lightrec_lwc2(state, op, ops, host, addr); |
d16005f8 | 285 | return 0; |
a59e5536 | 286 | case OP_LWL: |
287 | return lightrec_lwl(state, ops, opcode, host, addr, data); | |
288 | case OP_LWR: | |
289 | return lightrec_lwr(state, ops, opcode, host, addr, data); | |
d16005f8 PC |
290 | case OP_LW: |
291 | default: | |
a59e5536 | 292 | return ops->lw(state, opcode, host, addr); |
d16005f8 PC |
293 | } |
294 | } | |
295 | ||
296 | static void lightrec_rw_helper(struct lightrec_state *state, | |
297 | union code op, u16 *flags) | |
298 | { | |
299 | u32 ret = lightrec_rw(state, op, | |
300 | state->native_reg_cache[op.i.rs], | |
301 | state->native_reg_cache[op.i.rt], flags); | |
302 | ||
303 | switch (op.i.op) { | |
304 | case OP_LB: | |
305 | case OP_LBU: | |
306 | case OP_LH: | |
307 | case OP_LHU: | |
308 | case OP_LWL: | |
309 | case OP_LWR: | |
310 | case OP_LW: | |
311 | if (op.i.rt) | |
312 | state->native_reg_cache[op.i.rt] = ret; | |
313 | default: /* fall-through */ | |
314 | break; | |
315 | } | |
316 | } | |
317 | ||
318 | static void lightrec_rw_cb(struct lightrec_state *state, union code op) | |
319 | { | |
320 | lightrec_rw_helper(state, op, NULL); | |
321 | } | |
322 | ||
323 | static void lightrec_rw_generic_cb(struct lightrec_state *state, | |
324 | struct opcode *op, struct block *block) | |
325 | { | |
326 | bool was_tagged = op->flags & (LIGHTREC_HW_IO | LIGHTREC_DIRECT_IO); | |
327 | ||
328 | lightrec_rw_helper(state, op->c, &op->flags); | |
329 | ||
330 | if (!was_tagged) { | |
331 | pr_debug("Opcode of block at PC 0x%08x offset 0x%x has been " | |
332 | "tagged - flag for recompilation\n", | |
333 | block->pc, op->offset << 2); | |
334 | ||
a59e5536 | 335 | block->flags |= BLOCK_SHOULD_RECOMPILE; |
d16005f8 PC |
336 | } |
337 | } | |
338 | ||
339 | u32 lightrec_mfc(struct lightrec_state *state, union code op) | |
340 | { | |
341 | bool is_cfc = (op.i.op == OP_CP0 && op.r.rs == OP_CP0_CFC0) || | |
342 | (op.i.op == OP_CP2 && op.r.rs == OP_CP2_BASIC_CFC2); | |
a59e5536 | 343 | u32 (*func)(struct lightrec_state *, u32, u8); |
d16005f8 PC |
344 | const struct lightrec_cop_ops *ops; |
345 | ||
346 | if (op.i.op == OP_CP0) | |
347 | ops = &state->ops.cop0_ops; | |
348 | else | |
349 | ops = &state->ops.cop2_ops; | |
350 | ||
351 | if (is_cfc) | |
352 | func = ops->cfc; | |
353 | else | |
354 | func = ops->mfc; | |
355 | ||
a59e5536 | 356 | return (*func)(state, op.opcode, op.r.rd); |
d16005f8 PC |
357 | } |
358 | ||
359 | static void lightrec_mfc_cb(struct lightrec_state *state, union code op) | |
360 | { | |
361 | u32 rt = lightrec_mfc(state, op); | |
362 | ||
363 | if (op.r.rt) | |
364 | state->native_reg_cache[op.r.rt] = rt; | |
365 | } | |
366 | ||
367 | void lightrec_mtc(struct lightrec_state *state, union code op, u32 data) | |
368 | { | |
369 | bool is_ctc = (op.i.op == OP_CP0 && op.r.rs == OP_CP0_CTC0) || | |
370 | (op.i.op == OP_CP2 && op.r.rs == OP_CP2_BASIC_CTC2); | |
a59e5536 | 371 | void (*func)(struct lightrec_state *, u32, u8, u32); |
d16005f8 PC |
372 | const struct lightrec_cop_ops *ops; |
373 | ||
374 | if (op.i.op == OP_CP0) | |
375 | ops = &state->ops.cop0_ops; | |
376 | else | |
377 | ops = &state->ops.cop2_ops; | |
378 | ||
379 | if (is_ctc) | |
380 | func = ops->ctc; | |
381 | else | |
382 | func = ops->mtc; | |
383 | ||
a59e5536 | 384 | (*func)(state, op.opcode, op.r.rd, data); |
d16005f8 PC |
385 | } |
386 | ||
387 | static void lightrec_mtc_cb(struct lightrec_state *state, union code op) | |
388 | { | |
389 | lightrec_mtc(state, op, state->native_reg_cache[op.r.rt]); | |
390 | } | |
391 | ||
392 | static void lightrec_rfe_cb(struct lightrec_state *state, union code op) | |
393 | { | |
394 | u32 status; | |
395 | ||
396 | /* Read CP0 Status register (r12) */ | |
a59e5536 | 397 | status = state->ops.cop0_ops.mfc(state, op.opcode, 12); |
d16005f8 PC |
398 | |
399 | /* Switch the bits */ | |
400 | status = ((status & 0x3c) >> 2) | (status & ~0xf); | |
401 | ||
402 | /* Write it back */ | |
a59e5536 | 403 | state->ops.cop0_ops.ctc(state, op.opcode, 12, status); |
d16005f8 PC |
404 | } |
405 | ||
406 | static void lightrec_cp_cb(struct lightrec_state *state, union code op) | |
407 | { | |
408 | void (*func)(struct lightrec_state *, u32); | |
409 | ||
410 | if ((op.opcode >> 25) & 1) | |
411 | func = state->ops.cop2_ops.op; | |
412 | else | |
413 | func = state->ops.cop0_ops.op; | |
414 | ||
415 | (*func)(state, op.opcode); | |
416 | } | |
417 | ||
418 | static void lightrec_syscall_cb(struct lightrec_state *state, union code op) | |
419 | { | |
420 | lightrec_set_exit_flags(state, LIGHTREC_EXIT_SYSCALL); | |
421 | } | |
422 | ||
423 | static void lightrec_break_cb(struct lightrec_state *state, union code op) | |
424 | { | |
425 | lightrec_set_exit_flags(state, LIGHTREC_EXIT_BREAK); | |
426 | } | |
427 | ||
428 | struct block * lightrec_get_block(struct lightrec_state *state, u32 pc) | |
429 | { | |
430 | struct block *block = lightrec_find_block(state->block_cache, pc); | |
431 | ||
432 | if (block && lightrec_block_is_outdated(block)) { | |
433 | pr_debug("Block at PC 0x%08x is outdated!\n", block->pc); | |
434 | ||
435 | /* Make sure the recompiler isn't processing the block we'll | |
436 | * destroy */ | |
437 | if (ENABLE_THREADED_COMPILER) | |
438 | lightrec_recompiler_remove(state->rec, block); | |
439 | ||
440 | lightrec_unregister_block(state->block_cache, block); | |
a59e5536 | 441 | remove_from_code_lut(state->block_cache, block); |
d16005f8 PC |
442 | lightrec_free_block(block); |
443 | block = NULL; | |
444 | } | |
445 | ||
446 | if (!block) { | |
447 | block = lightrec_precompile_block(state, pc); | |
448 | if (!block) { | |
449 | pr_err("Unable to recompile block at PC 0x%x\n", pc); | |
450 | lightrec_set_exit_flags(state, LIGHTREC_EXIT_SEGFAULT); | |
451 | return NULL; | |
452 | } | |
453 | ||
454 | lightrec_register_block(state->block_cache, block); | |
455 | } | |
456 | ||
457 | return block; | |
458 | } | |
459 | ||
460 | static void * get_next_block_func(struct lightrec_state *state, u32 pc) | |
461 | { | |
462 | struct block *block; | |
463 | bool should_recompile; | |
464 | void *func; | |
465 | ||
466 | for (;;) { | |
467 | func = state->code_lut[lut_offset(pc)]; | |
468 | if (func && func != state->get_next_block) | |
469 | return func; | |
470 | ||
471 | block = lightrec_get_block(state, pc); | |
472 | ||
473 | if (unlikely(!block)) | |
474 | return NULL; | |
475 | ||
a59e5536 | 476 | should_recompile = block->flags & BLOCK_SHOULD_RECOMPILE && |
477 | !(block->flags & BLOCK_IS_DEAD); | |
d16005f8 PC |
478 | |
479 | if (unlikely(should_recompile)) { | |
a59e5536 | 480 | pr_debug("Block at PC 0x%08x should recompile\n", pc); |
d16005f8 | 481 | |
d16005f8 | 482 | lightrec_unregister(MEM_FOR_CODE, block->code_size); |
a59e5536 | 483 | |
484 | if (ENABLE_THREADED_COMPILER) | |
485 | lightrec_recompiler_add(state->rec, block); | |
486 | else | |
487 | lightrec_compile_block(block); | |
d16005f8 PC |
488 | } |
489 | ||
490 | if (ENABLE_THREADED_COMPILER && likely(!should_recompile)) | |
491 | func = lightrec_recompiler_run_first_pass(block, &pc); | |
492 | else | |
493 | func = block->function; | |
494 | ||
495 | if (likely(func)) | |
496 | return func; | |
497 | ||
498 | /* Block wasn't compiled yet - run the interpreter */ | |
499 | if (!ENABLE_THREADED_COMPILER && | |
500 | ((ENABLE_FIRST_PASS && likely(!should_recompile)) || | |
501 | unlikely(block->flags & BLOCK_NEVER_COMPILE))) | |
502 | pc = lightrec_emulate_block(block, pc); | |
503 | ||
504 | if (likely(!(block->flags & BLOCK_NEVER_COMPILE))) { | |
505 | /* Then compile it using the profiled data */ | |
506 | if (ENABLE_THREADED_COMPILER) | |
507 | lightrec_recompiler_add(state->rec, block); | |
508 | else | |
509 | lightrec_compile_block(block); | |
510 | } | |
511 | ||
512 | if (state->exit_flags != LIGHTREC_EXIT_NORMAL || | |
513 | state->current_cycle >= state->target_cycle) { | |
514 | state->next_pc = pc; | |
515 | return NULL; | |
516 | } | |
517 | } | |
518 | } | |
519 | ||
520 | static s32 c_generic_function_wrapper(struct lightrec_state *state, | |
521 | s32 cycles_delta, | |
522 | void (*f)(struct lightrec_state *, | |
523 | struct opcode *, | |
524 | struct block *), | |
525 | struct opcode *op, struct block *block) | |
526 | { | |
527 | state->current_cycle = state->target_cycle - cycles_delta; | |
528 | ||
529 | (*f)(state, op, block); | |
530 | ||
531 | return state->target_cycle - state->current_cycle; | |
532 | } | |
533 | ||
534 | static s32 c_function_wrapper(struct lightrec_state *state, s32 cycles_delta, | |
535 | void (*f)(struct lightrec_state *, union code), | |
536 | union code op) | |
537 | { | |
538 | state->current_cycle = state->target_cycle - cycles_delta; | |
539 | ||
540 | (*f)(state, op); | |
541 | ||
542 | return state->target_cycle - state->current_cycle; | |
543 | } | |
544 | ||
545 | static struct block * generate_wrapper(struct lightrec_state *state, | |
546 | void *f, bool generic) | |
547 | { | |
548 | struct block *block; | |
549 | jit_state_t *_jit; | |
550 | unsigned int i; | |
551 | int stack_ptr; | |
552 | jit_word_t code_size; | |
553 | jit_node_t *to_tramp, *to_fn_epilog; | |
554 | ||
555 | block = lightrec_malloc(state, MEM_FOR_IR, sizeof(*block)); | |
556 | if (!block) | |
557 | goto err_no_mem; | |
558 | ||
559 | _jit = jit_new_state(); | |
560 | if (!_jit) | |
561 | goto err_free_block; | |
562 | ||
563 | jit_name("RW wrapper"); | |
564 | jit_note(__FILE__, __LINE__); | |
565 | ||
566 | /* Wrapper entry point */ | |
567 | jit_prolog(); | |
568 | ||
569 | stack_ptr = jit_allocai(sizeof(uintptr_t) * NUM_TEMPS); | |
570 | ||
571 | for (i = 0; i < NUM_TEMPS; i++) | |
572 | jit_stxi(stack_ptr + i * sizeof(uintptr_t), JIT_FP, JIT_R(i)); | |
573 | ||
574 | /* Jump to the trampoline */ | |
575 | to_tramp = jit_jmpi(); | |
576 | ||
577 | /* The trampoline will jump back here */ | |
578 | to_fn_epilog = jit_label(); | |
579 | ||
580 | for (i = 0; i < NUM_TEMPS; i++) | |
581 | jit_ldxi(JIT_R(i), JIT_FP, stack_ptr + i * sizeof(uintptr_t)); | |
582 | ||
583 | jit_ret(); | |
584 | jit_epilog(); | |
585 | ||
586 | /* Trampoline entry point. | |
587 | * The sole purpose of the trampoline is to cheese Lightning not to | |
588 | * save/restore the callee-saved register LIGHTREC_REG_CYCLE, since we | |
589 | * do want to return to the caller with this register modified. */ | |
590 | jit_prolog(); | |
591 | jit_tramp(256); | |
592 | jit_patch(to_tramp); | |
593 | ||
594 | jit_prepare(); | |
595 | jit_pushargr(LIGHTREC_REG_STATE); | |
596 | jit_pushargr(LIGHTREC_REG_CYCLE); | |
597 | jit_pushargi((uintptr_t)f); | |
598 | jit_pushargr(JIT_R0); | |
599 | if (generic) { | |
600 | jit_pushargr(JIT_R1); | |
601 | jit_finishi(c_generic_function_wrapper); | |
602 | } else { | |
603 | jit_finishi(c_function_wrapper); | |
604 | } | |
605 | ||
606 | #if __WORDSIZE == 64 | |
607 | jit_retval_i(LIGHTREC_REG_CYCLE); | |
608 | #else | |
609 | jit_retval(LIGHTREC_REG_CYCLE); | |
610 | #endif | |
611 | ||
612 | jit_patch_at(jit_jmpi(), to_fn_epilog); | |
613 | jit_epilog(); | |
614 | ||
615 | block->state = state; | |
616 | block->_jit = _jit; | |
617 | block->function = jit_emit(); | |
618 | block->opcode_list = NULL; | |
619 | block->flags = 0; | |
620 | block->nb_ops = 0; | |
621 | ||
622 | jit_get_code(&code_size); | |
623 | lightrec_register(MEM_FOR_CODE, code_size); | |
624 | ||
625 | block->code_size = code_size; | |
626 | ||
627 | if (ENABLE_DISASSEMBLER) { | |
628 | pr_debug("Wrapper block:\n"); | |
629 | jit_disassemble(); | |
630 | } | |
631 | ||
632 | jit_clear_state(); | |
633 | return block; | |
634 | ||
635 | err_free_block: | |
636 | lightrec_free(state, MEM_FOR_IR, sizeof(*block), block); | |
637 | err_no_mem: | |
638 | pr_err("Unable to compile wrapper: Out of memory\n"); | |
639 | return NULL; | |
640 | } | |
641 | ||
642 | static struct block * generate_dispatcher(struct lightrec_state *state) | |
643 | { | |
644 | struct block *block; | |
645 | jit_state_t *_jit; | |
646 | jit_node_t *to_end, *to_end2, *to_c, *loop, *addr, *addr2; | |
647 | unsigned int i; | |
648 | u32 offset, ram_len; | |
649 | jit_word_t code_size; | |
650 | ||
651 | block = lightrec_malloc(state, MEM_FOR_IR, sizeof(*block)); | |
652 | if (!block) | |
653 | goto err_no_mem; | |
654 | ||
655 | _jit = jit_new_state(); | |
656 | if (!_jit) | |
657 | goto err_free_block; | |
658 | ||
659 | jit_name("dispatcher"); | |
660 | jit_note(__FILE__, __LINE__); | |
661 | ||
662 | jit_prolog(); | |
663 | jit_frame(256); | |
664 | ||
665 | jit_getarg(JIT_R0, jit_arg()); | |
666 | #if __WORDSIZE == 64 | |
667 | jit_getarg_i(LIGHTREC_REG_CYCLE, jit_arg()); | |
668 | #else | |
669 | jit_getarg(LIGHTREC_REG_CYCLE, jit_arg()); | |
670 | #endif | |
671 | ||
672 | /* Force all callee-saved registers to be pushed on the stack */ | |
673 | for (i = 0; i < NUM_REGS; i++) | |
674 | jit_movr(JIT_V(i), JIT_V(i)); | |
675 | ||
676 | /* Pass lightrec_state structure to blocks, using the last callee-saved | |
677 | * register that Lightning provides */ | |
678 | jit_movi(LIGHTREC_REG_STATE, (intptr_t) state); | |
679 | ||
680 | loop = jit_label(); | |
681 | ||
682 | /* Call the block's code */ | |
683 | jit_jmpr(JIT_R0); | |
684 | ||
685 | /* The block will jump here, with the number of cycles remaining in | |
686 | * LIGHTREC_REG_CYCLE */ | |
687 | addr2 = jit_indirect(); | |
688 | ||
689 | /* Jump to end if state->target_cycle < state->current_cycle */ | |
690 | to_end = jit_blei(LIGHTREC_REG_CYCLE, 0); | |
691 | ||
692 | /* Convert next PC to KUNSEG and avoid mirrors */ | |
693 | ram_len = state->maps[PSX_MAP_KERNEL_USER_RAM].length; | |
694 | jit_andi(JIT_R0, JIT_V0, 0x10000000 | (ram_len - 1)); | |
695 | to_c = jit_bgei(JIT_R0, ram_len); | |
696 | ||
697 | /* Fast path: code is running from RAM, use the code LUT */ | |
698 | #if __WORDSIZE == 64 | |
699 | jit_lshi(JIT_R0, JIT_R0, 1); | |
700 | #endif | |
701 | jit_addr(JIT_R0, JIT_R0, LIGHTREC_REG_STATE); | |
702 | jit_ldxi(JIT_R0, JIT_R0, offsetof(struct lightrec_state, code_lut)); | |
703 | ||
704 | /* If we get non-NULL, loop */ | |
705 | jit_patch_at(jit_bnei(JIT_R0, 0), loop); | |
706 | ||
707 | /* Slow path: call C function get_next_block_func() */ | |
708 | jit_patch(to_c); | |
709 | ||
710 | if (ENABLE_FIRST_PASS) { | |
711 | /* We may call the interpreter - update state->current_cycle */ | |
712 | jit_ldxi_i(JIT_R2, LIGHTREC_REG_STATE, | |
713 | offsetof(struct lightrec_state, target_cycle)); | |
714 | jit_subr(JIT_R1, JIT_R2, LIGHTREC_REG_CYCLE); | |
715 | jit_stxi_i(offsetof(struct lightrec_state, current_cycle), | |
716 | LIGHTREC_REG_STATE, JIT_R1); | |
717 | } | |
718 | ||
719 | /* The code LUT will be set to this address when the block at the target | |
720 | * PC has been preprocessed but not yet compiled by the threaded | |
721 | * recompiler */ | |
722 | addr = jit_indirect(); | |
723 | ||
724 | /* Get the next block */ | |
725 | jit_prepare(); | |
726 | jit_pushargr(LIGHTREC_REG_STATE); | |
727 | jit_pushargr(JIT_V0); | |
728 | jit_finishi(&get_next_block_func); | |
729 | jit_retval(JIT_R0); | |
730 | ||
731 | if (ENABLE_FIRST_PASS) { | |
732 | /* The interpreter may have updated state->current_cycle and | |
733 | * state->target_cycle - recalc the delta */ | |
734 | jit_ldxi_i(JIT_R1, LIGHTREC_REG_STATE, | |
735 | offsetof(struct lightrec_state, current_cycle)); | |
736 | jit_ldxi_i(JIT_R2, LIGHTREC_REG_STATE, | |
737 | offsetof(struct lightrec_state, target_cycle)); | |
738 | jit_subr(LIGHTREC_REG_CYCLE, JIT_R2, JIT_R1); | |
739 | } | |
740 | ||
741 | /* If we get non-NULL, loop */ | |
742 | jit_patch_at(jit_bnei(JIT_R0, 0), loop); | |
743 | ||
744 | to_end2 = jit_jmpi(); | |
745 | ||
746 | /* When exiting, the recompiled code will jump to that address */ | |
747 | jit_note(__FILE__, __LINE__); | |
748 | jit_patch(to_end); | |
749 | ||
750 | /* Store back the next_pc to the lightrec_state structure */ | |
751 | offset = offsetof(struct lightrec_state, next_pc); | |
752 | jit_stxi_i(offset, LIGHTREC_REG_STATE, JIT_V0); | |
753 | ||
754 | jit_patch(to_end2); | |
755 | ||
756 | jit_retr(LIGHTREC_REG_CYCLE); | |
757 | jit_epilog(); | |
758 | ||
759 | block->state = state; | |
760 | block->_jit = _jit; | |
761 | block->function = jit_emit(); | |
762 | block->opcode_list = NULL; | |
763 | block->flags = 0; | |
764 | block->nb_ops = 0; | |
765 | ||
766 | jit_get_code(&code_size); | |
767 | lightrec_register(MEM_FOR_CODE, code_size); | |
768 | ||
769 | block->code_size = code_size; | |
770 | ||
771 | state->eob_wrapper_func = jit_address(addr2); | |
772 | state->get_next_block = jit_address(addr); | |
773 | ||
774 | if (ENABLE_DISASSEMBLER) { | |
775 | pr_debug("Dispatcher block:\n"); | |
776 | jit_disassemble(); | |
777 | } | |
778 | ||
779 | /* We're done! */ | |
780 | jit_clear_state(); | |
781 | return block; | |
782 | ||
783 | err_free_block: | |
784 | lightrec_free(state, MEM_FOR_IR, sizeof(*block), block); | |
785 | err_no_mem: | |
786 | pr_err("Unable to compile dispatcher: Out of memory\n"); | |
787 | return NULL; | |
788 | } | |
789 | ||
790 | union code lightrec_read_opcode(struct lightrec_state *state, u32 pc) | |
791 | { | |
792 | u32 addr, kunseg_pc = kunseg(pc); | |
793 | const u32 *code; | |
794 | const struct lightrec_mem_map *map = lightrec_get_map(state, kunseg_pc); | |
795 | ||
796 | addr = kunseg_pc - map->pc; | |
797 | ||
798 | while (map->mirror_of) | |
799 | map = map->mirror_of; | |
800 | ||
801 | code = map->address + addr; | |
802 | ||
803 | return (union code) *code; | |
804 | } | |
805 | ||
806 | static struct block * lightrec_precompile_block(struct lightrec_state *state, | |
807 | u32 pc) | |
808 | { | |
809 | struct opcode *list; | |
810 | struct block *block; | |
811 | const u32 *code; | |
812 | u32 addr, kunseg_pc = kunseg(pc); | |
813 | const struct lightrec_mem_map *map = lightrec_get_map(state, kunseg_pc); | |
814 | unsigned int length; | |
815 | ||
816 | if (!map) | |
817 | return NULL; | |
818 | ||
819 | addr = kunseg_pc - map->pc; | |
820 | ||
821 | while (map->mirror_of) | |
822 | map = map->mirror_of; | |
823 | ||
824 | code = map->address + addr; | |
825 | ||
826 | block = lightrec_malloc(state, MEM_FOR_IR, sizeof(*block)); | |
827 | if (!block) { | |
828 | pr_err("Unable to recompile block: Out of memory\n"); | |
829 | return NULL; | |
830 | } | |
831 | ||
832 | list = lightrec_disassemble(state, code, &length); | |
833 | if (!list) { | |
834 | lightrec_free(state, MEM_FOR_IR, sizeof(*block), block); | |
835 | return NULL; | |
836 | } | |
837 | ||
838 | block->pc = pc; | |
839 | block->state = state; | |
840 | block->_jit = NULL; | |
841 | block->function = NULL; | |
842 | block->opcode_list = list; | |
843 | block->map = map; | |
844 | block->next = NULL; | |
845 | block->flags = 0; | |
846 | block->code_size = 0; | |
847 | #if ENABLE_THREADED_COMPILER | |
848 | block->op_list_freed = (atomic_flag)ATOMIC_FLAG_INIT; | |
849 | #endif | |
850 | block->nb_ops = length / sizeof(u32); | |
851 | ||
852 | lightrec_optimize(block); | |
853 | ||
854 | length = block->nb_ops * sizeof(u32); | |
855 | ||
856 | lightrec_register(MEM_FOR_MIPS_CODE, length); | |
857 | ||
858 | if (ENABLE_DISASSEMBLER) { | |
859 | pr_debug("Disassembled block at PC: 0x%x\n", block->pc); | |
860 | lightrec_print_disassembly(block, code, length); | |
861 | } | |
862 | ||
863 | pr_debug("Block size: %lu opcodes\n", block->nb_ops); | |
864 | ||
865 | /* If the first opcode is an 'impossible' branch, never compile the | |
866 | * block */ | |
867 | if (list->flags & LIGHTREC_EMULATE_BRANCH) | |
868 | block->flags |= BLOCK_NEVER_COMPILE; | |
869 | ||
870 | block->hash = lightrec_calculate_block_hash(block); | |
871 | ||
a59e5536 | 872 | pr_debug("Recompile count: %u\n", state->nb_precompile++); |
873 | ||
d16005f8 PC |
874 | return block; |
875 | } | |
876 | ||
877 | static bool lightrec_block_is_fully_tagged(struct block *block) | |
878 | { | |
879 | struct opcode *op; | |
880 | ||
881 | for (op = block->opcode_list; op; op = op->next) { | |
882 | /* Verify that all load/stores of the opcode list | |
883 | * Check all loads/stores of the opcode list and mark the | |
884 | * block as fully compiled if they all have been tagged. */ | |
885 | switch (op->c.i.op) { | |
886 | case OP_LB: | |
887 | case OP_LH: | |
888 | case OP_LWL: | |
889 | case OP_LW: | |
890 | case OP_LBU: | |
891 | case OP_LHU: | |
892 | case OP_LWR: | |
893 | case OP_SB: | |
894 | case OP_SH: | |
895 | case OP_SWL: | |
896 | case OP_SW: | |
897 | case OP_SWR: | |
898 | case OP_LWC2: | |
899 | case OP_SWC2: | |
900 | if (!(op->flags & (LIGHTREC_DIRECT_IO | | |
901 | LIGHTREC_HW_IO))) | |
902 | return false; | |
903 | default: /* fall-through */ | |
904 | continue; | |
905 | } | |
906 | } | |
907 | ||
908 | return true; | |
909 | } | |
910 | ||
a59e5536 | 911 | static void lightrec_reap_block(void *data) |
912 | { | |
913 | struct block *block = data; | |
914 | ||
915 | pr_debug("Reap dead block at PC 0x%08x\n", block->pc); | |
916 | lightrec_free_block(block); | |
917 | } | |
918 | ||
919 | static void lightrec_reap_jit(void *data) | |
920 | { | |
921 | _jit_destroy_state(data); | |
922 | } | |
923 | ||
d16005f8 PC |
924 | int lightrec_compile_block(struct block *block) |
925 | { | |
926 | struct lightrec_state *state = block->state; | |
a59e5536 | 927 | struct lightrec_branch_target *target; |
d16005f8 | 928 | bool op_list_freed = false, fully_tagged = false; |
a59e5536 | 929 | struct block *block2; |
d16005f8 | 930 | struct opcode *elm; |
a59e5536 | 931 | jit_state_t *_jit, *oldjit; |
d16005f8 PC |
932 | jit_node_t *start_of_block; |
933 | bool skip_next = false; | |
934 | jit_word_t code_size; | |
935 | unsigned int i, j; | |
a59e5536 | 936 | u32 next_pc, offset; |
d16005f8 PC |
937 | |
938 | fully_tagged = lightrec_block_is_fully_tagged(block); | |
939 | if (fully_tagged) | |
940 | block->flags |= BLOCK_FULLY_TAGGED; | |
941 | ||
942 | _jit = jit_new_state(); | |
943 | if (!_jit) | |
944 | return -ENOMEM; | |
945 | ||
a59e5536 | 946 | oldjit = block->_jit; |
d16005f8 PC |
947 | block->_jit = _jit; |
948 | ||
949 | lightrec_regcache_reset(state->reg_cache); | |
950 | state->cycles = 0; | |
951 | state->nb_branches = 0; | |
952 | state->nb_local_branches = 0; | |
953 | state->nb_targets = 0; | |
954 | ||
955 | jit_prolog(); | |
956 | jit_tramp(256); | |
957 | ||
958 | start_of_block = jit_label(); | |
959 | ||
960 | for (elm = block->opcode_list; elm; elm = elm->next) { | |
961 | next_pc = block->pc + elm->offset * sizeof(u32); | |
962 | ||
963 | if (skip_next) { | |
964 | skip_next = false; | |
965 | continue; | |
966 | } | |
967 | ||
968 | state->cycles += lightrec_cycles_of_opcode(elm->c); | |
969 | ||
970 | if (elm->flags & LIGHTREC_EMULATE_BRANCH) { | |
971 | pr_debug("Branch at offset 0x%x will be emulated\n", | |
972 | elm->offset << 2); | |
973 | lightrec_emit_eob(block, elm, next_pc); | |
974 | skip_next = !(elm->flags & LIGHTREC_NO_DS); | |
975 | } else if (elm->opcode) { | |
976 | lightrec_rec_opcode(block, elm, next_pc); | |
977 | skip_next = has_delay_slot(elm->c) && | |
978 | !(elm->flags & LIGHTREC_NO_DS); | |
979 | #if _WIN32 | |
980 | /* FIXME: GNU Lightning on Windows seems to use our | |
981 | * mapped registers as temporaries. Until the actual bug | |
982 | * is found and fixed, unconditionally mark our | |
983 | * registers as live here. */ | |
984 | lightrec_regcache_mark_live(state->reg_cache, _jit); | |
985 | #endif | |
986 | } | |
987 | } | |
988 | ||
989 | for (i = 0; i < state->nb_branches; i++) | |
990 | jit_patch(state->branches[i]); | |
991 | ||
992 | for (i = 0; i < state->nb_local_branches; i++) { | |
993 | struct lightrec_branch *branch = &state->local_branches[i]; | |
994 | ||
995 | pr_debug("Patch local branch to offset 0x%x\n", | |
996 | branch->target << 2); | |
997 | ||
998 | if (branch->target == 0) { | |
999 | jit_patch_at(branch->branch, start_of_block); | |
1000 | continue; | |
1001 | } | |
1002 | ||
1003 | for (j = 0; j < state->nb_targets; j++) { | |
1004 | if (state->targets[j].offset == branch->target) { | |
1005 | jit_patch_at(branch->branch, | |
1006 | state->targets[j].label); | |
1007 | break; | |
1008 | } | |
1009 | } | |
1010 | ||
1011 | if (j == state->nb_targets) | |
1012 | pr_err("Unable to find branch target\n"); | |
1013 | } | |
1014 | ||
1015 | jit_ldxi(JIT_R0, LIGHTREC_REG_STATE, | |
1016 | offsetof(struct lightrec_state, eob_wrapper_func)); | |
1017 | ||
1018 | jit_jmpr(JIT_R0); | |
1019 | ||
1020 | jit_ret(); | |
1021 | jit_epilog(); | |
1022 | ||
1023 | block->function = jit_emit(); | |
a59e5536 | 1024 | block->flags &= ~BLOCK_SHOULD_RECOMPILE; |
d16005f8 PC |
1025 | |
1026 | /* Add compiled function to the LUT */ | |
1027 | state->code_lut[lut_offset(block->pc)] = block->function; | |
1028 | ||
a59e5536 | 1029 | /* Fill code LUT with the block's entry points */ |
1030 | for (i = 0; i < state->nb_targets; i++) { | |
1031 | target = &state->targets[i]; | |
1032 | ||
1033 | if (target->offset) { | |
1034 | offset = lut_offset(block->pc) + target->offset; | |
1035 | state->code_lut[offset] = jit_address(target->label); | |
1036 | } | |
1037 | } | |
1038 | ||
1039 | /* Detect old blocks that have been covered by the new one */ | |
1040 | for (i = 0; i < state->nb_targets; i++) { | |
1041 | target = &state->targets[i]; | |
1042 | ||
1043 | if (!target->offset) | |
1044 | continue; | |
1045 | ||
1046 | offset = block->pc + target->offset * sizeof(u32); | |
1047 | block2 = lightrec_find_block(state->block_cache, offset); | |
1048 | if (block2) { | |
1049 | /* No need to check if block2 is compilable - it must | |
1050 | * be, otherwise block wouldn't be compilable either */ | |
1051 | ||
1052 | block2->flags |= BLOCK_IS_DEAD; | |
1053 | ||
1054 | pr_debug("Reap block 0x%08x as it's covered by block " | |
1055 | "0x%08x\n", block2->pc, block->pc); | |
1056 | ||
1057 | lightrec_unregister_block(state->block_cache, block2); | |
1058 | ||
1059 | if (ENABLE_THREADED_COMPILER) { | |
1060 | lightrec_recompiler_remove(state->rec, block2); | |
1061 | lightrec_reaper_add(state->reaper, | |
1062 | lightrec_reap_block, | |
1063 | block2); | |
1064 | } else { | |
1065 | lightrec_free_block(block2); | |
1066 | } | |
1067 | } | |
1068 | } | |
1069 | ||
d16005f8 PC |
1070 | jit_get_code(&code_size); |
1071 | lightrec_register(MEM_FOR_CODE, code_size); | |
1072 | ||
1073 | block->code_size = code_size; | |
1074 | ||
1075 | if (ENABLE_DISASSEMBLER) { | |
1076 | pr_debug("Compiling block at PC: 0x%x\n", block->pc); | |
1077 | jit_disassemble(); | |
1078 | } | |
1079 | ||
1080 | jit_clear_state(); | |
1081 | ||
1082 | #if ENABLE_THREADED_COMPILER | |
1083 | if (fully_tagged) | |
1084 | op_list_freed = atomic_flag_test_and_set(&block->op_list_freed); | |
1085 | #endif | |
1086 | if (fully_tagged && !op_list_freed) { | |
1087 | pr_debug("Block PC 0x%08x is fully tagged" | |
1088 | " - free opcode list\n", block->pc); | |
1089 | lightrec_free_opcode_list(state, block->opcode_list); | |
1090 | block->opcode_list = NULL; | |
1091 | } | |
1092 | ||
a59e5536 | 1093 | if (oldjit) { |
1094 | pr_debug("Block 0x%08x recompiled, reaping old jit context.\n", | |
1095 | block->pc); | |
1096 | ||
1097 | if (ENABLE_THREADED_COMPILER) | |
1098 | lightrec_reaper_add(state->reaper, | |
1099 | lightrec_reap_jit, oldjit); | |
1100 | else | |
1101 | _jit_destroy_state(oldjit); | |
1102 | } | |
1103 | ||
d16005f8 PC |
1104 | return 0; |
1105 | } | |
1106 | ||
1107 | u32 lightrec_execute(struct lightrec_state *state, u32 pc, u32 target_cycle) | |
1108 | { | |
1109 | s32 (*func)(void *, s32) = (void *)state->dispatcher->function; | |
1110 | void *block_trace; | |
1111 | s32 cycles_delta; | |
1112 | ||
1113 | state->exit_flags = LIGHTREC_EXIT_NORMAL; | |
1114 | ||
1115 | /* Handle the cycle counter overflowing */ | |
1116 | if (unlikely(target_cycle < state->current_cycle)) | |
1117 | target_cycle = UINT_MAX; | |
1118 | ||
1119 | state->target_cycle = target_cycle; | |
1120 | ||
1121 | block_trace = get_next_block_func(state, pc); | |
1122 | if (block_trace) { | |
1123 | cycles_delta = state->target_cycle - state->current_cycle; | |
1124 | ||
1125 | cycles_delta = (*func)(block_trace, cycles_delta); | |
1126 | ||
1127 | state->current_cycle = state->target_cycle - cycles_delta; | |
1128 | } | |
1129 | ||
a59e5536 | 1130 | if (ENABLE_THREADED_COMPILER) |
1131 | lightrec_reaper_reap(state->reaper); | |
1132 | ||
d16005f8 PC |
1133 | return state->next_pc; |
1134 | } | |
1135 | ||
1136 | u32 lightrec_execute_one(struct lightrec_state *state, u32 pc) | |
1137 | { | |
1138 | return lightrec_execute(state, pc, state->current_cycle); | |
1139 | } | |
1140 | ||
1141 | u32 lightrec_run_interpreter(struct lightrec_state *state, u32 pc) | |
1142 | { | |
1143 | struct block *block = lightrec_get_block(state, pc); | |
1144 | if (!block) | |
1145 | return 0; | |
1146 | ||
1147 | state->exit_flags = LIGHTREC_EXIT_NORMAL; | |
1148 | ||
1149 | return lightrec_emulate_block(block, pc); | |
1150 | } | |
1151 | ||
1152 | void lightrec_free_block(struct block *block) | |
1153 | { | |
1154 | lightrec_unregister(MEM_FOR_MIPS_CODE, block->nb_ops * sizeof(u32)); | |
1155 | if (block->opcode_list) | |
1156 | lightrec_free_opcode_list(block->state, block->opcode_list); | |
1157 | if (block->_jit) | |
1158 | _jit_destroy_state(block->_jit); | |
1159 | lightrec_unregister(MEM_FOR_CODE, block->code_size); | |
1160 | lightrec_free(block->state, MEM_FOR_IR, sizeof(*block), block); | |
1161 | } | |
1162 | ||
1163 | struct lightrec_state * lightrec_init(char *argv0, | |
1164 | const struct lightrec_mem_map *map, | |
1165 | size_t nb, | |
1166 | const struct lightrec_ops *ops) | |
1167 | { | |
1168 | struct lightrec_state *state; | |
1169 | ||
1170 | /* Sanity-check ops */ | |
1171 | if (!ops || | |
1172 | !ops->cop0_ops.mfc || !ops->cop0_ops.cfc || !ops->cop0_ops.mtc || | |
1173 | !ops->cop0_ops.ctc || !ops->cop0_ops.op || | |
1174 | !ops->cop2_ops.mfc || !ops->cop2_ops.cfc || !ops->cop2_ops.mtc || | |
1175 | !ops->cop2_ops.ctc || !ops->cop2_ops.op) { | |
1176 | pr_err("Missing callbacks in lightrec_ops structure\n"); | |
1177 | return NULL; | |
1178 | } | |
1179 | ||
1180 | init_jit(argv0); | |
1181 | ||
1182 | state = calloc(1, sizeof(*state) + | |
1183 | sizeof(*state->code_lut) * CODE_LUT_SIZE); | |
1184 | if (!state) | |
1185 | goto err_finish_jit; | |
1186 | ||
1187 | lightrec_register(MEM_FOR_LIGHTREC, sizeof(*state) + | |
1188 | sizeof(*state->code_lut) * CODE_LUT_SIZE); | |
1189 | ||
1190 | #if ENABLE_TINYMM | |
1191 | state->tinymm = tinymm_init(malloc, free, 4096); | |
1192 | if (!state->tinymm) | |
1193 | goto err_free_state; | |
1194 | #endif | |
1195 | ||
1196 | state->block_cache = lightrec_blockcache_init(state); | |
1197 | if (!state->block_cache) | |
1198 | goto err_free_tinymm; | |
1199 | ||
1200 | state->reg_cache = lightrec_regcache_init(state); | |
1201 | if (!state->reg_cache) | |
1202 | goto err_free_block_cache; | |
1203 | ||
1204 | if (ENABLE_THREADED_COMPILER) { | |
1205 | state->rec = lightrec_recompiler_init(state); | |
1206 | if (!state->rec) | |
1207 | goto err_free_reg_cache; | |
a59e5536 | 1208 | |
1209 | state->reaper = lightrec_reaper_init(state); | |
1210 | if (!state->reaper) | |
1211 | goto err_free_recompiler; | |
d16005f8 PC |
1212 | } |
1213 | ||
1214 | state->nb_maps = nb; | |
1215 | state->maps = map; | |
1216 | ||
1217 | memcpy(&state->ops, ops, sizeof(*ops)); | |
1218 | ||
1219 | state->dispatcher = generate_dispatcher(state); | |
1220 | if (!state->dispatcher) | |
a59e5536 | 1221 | goto err_free_reaper; |
d16005f8 PC |
1222 | |
1223 | state->rw_generic_wrapper = generate_wrapper(state, | |
1224 | lightrec_rw_generic_cb, | |
1225 | true); | |
1226 | if (!state->rw_generic_wrapper) | |
1227 | goto err_free_dispatcher; | |
1228 | ||
1229 | state->rw_wrapper = generate_wrapper(state, lightrec_rw_cb, false); | |
1230 | if (!state->rw_wrapper) | |
1231 | goto err_free_generic_rw_wrapper; | |
1232 | ||
1233 | state->mfc_wrapper = generate_wrapper(state, lightrec_mfc_cb, false); | |
1234 | if (!state->mfc_wrapper) | |
1235 | goto err_free_rw_wrapper; | |
1236 | ||
1237 | state->mtc_wrapper = generate_wrapper(state, lightrec_mtc_cb, false); | |
1238 | if (!state->mtc_wrapper) | |
1239 | goto err_free_mfc_wrapper; | |
1240 | ||
1241 | state->rfe_wrapper = generate_wrapper(state, lightrec_rfe_cb, false); | |
1242 | if (!state->rfe_wrapper) | |
1243 | goto err_free_mtc_wrapper; | |
1244 | ||
1245 | state->cp_wrapper = generate_wrapper(state, lightrec_cp_cb, false); | |
1246 | if (!state->cp_wrapper) | |
1247 | goto err_free_rfe_wrapper; | |
1248 | ||
1249 | state->syscall_wrapper = generate_wrapper(state, lightrec_syscall_cb, | |
1250 | false); | |
1251 | if (!state->syscall_wrapper) | |
1252 | goto err_free_cp_wrapper; | |
1253 | ||
1254 | state->break_wrapper = generate_wrapper(state, lightrec_break_cb, | |
1255 | false); | |
1256 | if (!state->break_wrapper) | |
1257 | goto err_free_syscall_wrapper; | |
1258 | ||
1259 | state->rw_generic_func = state->rw_generic_wrapper->function; | |
1260 | state->rw_func = state->rw_wrapper->function; | |
1261 | state->mfc_func = state->mfc_wrapper->function; | |
1262 | state->mtc_func = state->mtc_wrapper->function; | |
1263 | state->rfe_func = state->rfe_wrapper->function; | |
1264 | state->cp_func = state->cp_wrapper->function; | |
1265 | state->syscall_func = state->syscall_wrapper->function; | |
1266 | state->break_func = state->break_wrapper->function; | |
1267 | ||
1268 | map = &state->maps[PSX_MAP_BIOS]; | |
1269 | state->offset_bios = (uintptr_t)map->address - map->pc; | |
1270 | ||
1271 | map = &state->maps[PSX_MAP_SCRATCH_PAD]; | |
1272 | state->offset_scratch = (uintptr_t)map->address - map->pc; | |
1273 | ||
1274 | map = &state->maps[PSX_MAP_KERNEL_USER_RAM]; | |
1275 | state->offset_ram = (uintptr_t)map->address - map->pc; | |
1276 | ||
1277 | if (state->maps[PSX_MAP_MIRROR1].address == map->address + 0x200000 && | |
1278 | state->maps[PSX_MAP_MIRROR2].address == map->address + 0x400000 && | |
1279 | state->maps[PSX_MAP_MIRROR3].address == map->address + 0x600000) | |
1280 | state->mirrors_mapped = true; | |
1281 | ||
1282 | return state; | |
1283 | ||
1284 | err_free_syscall_wrapper: | |
1285 | lightrec_free_block(state->syscall_wrapper); | |
1286 | err_free_cp_wrapper: | |
1287 | lightrec_free_block(state->cp_wrapper); | |
1288 | err_free_rfe_wrapper: | |
1289 | lightrec_free_block(state->rfe_wrapper); | |
1290 | err_free_mtc_wrapper: | |
1291 | lightrec_free_block(state->mtc_wrapper); | |
1292 | err_free_mfc_wrapper: | |
1293 | lightrec_free_block(state->mfc_wrapper); | |
1294 | err_free_rw_wrapper: | |
1295 | lightrec_free_block(state->rw_wrapper); | |
1296 | err_free_generic_rw_wrapper: | |
1297 | lightrec_free_block(state->rw_generic_wrapper); | |
1298 | err_free_dispatcher: | |
1299 | lightrec_free_block(state->dispatcher); | |
a59e5536 | 1300 | err_free_reaper: |
1301 | if (ENABLE_THREADED_COMPILER) | |
1302 | lightrec_reaper_destroy(state->reaper); | |
d16005f8 PC |
1303 | err_free_recompiler: |
1304 | if (ENABLE_THREADED_COMPILER) | |
1305 | lightrec_free_recompiler(state->rec); | |
1306 | err_free_reg_cache: | |
1307 | lightrec_free_regcache(state->reg_cache); | |
1308 | err_free_block_cache: | |
1309 | lightrec_free_block_cache(state->block_cache); | |
1310 | err_free_tinymm: | |
1311 | #if ENABLE_TINYMM | |
1312 | tinymm_shutdown(state->tinymm); | |
1313 | err_free_state: | |
1314 | #endif | |
1315 | lightrec_unregister(MEM_FOR_LIGHTREC, sizeof(*state) + | |
1316 | sizeof(*state->code_lut) * CODE_LUT_SIZE); | |
1317 | free(state); | |
1318 | err_finish_jit: | |
1319 | finish_jit(); | |
1320 | return NULL; | |
1321 | } | |
1322 | ||
1323 | void lightrec_destroy(struct lightrec_state *state) | |
1324 | { | |
a59e5536 | 1325 | if (ENABLE_THREADED_COMPILER) { |
d16005f8 | 1326 | lightrec_free_recompiler(state->rec); |
a59e5536 | 1327 | lightrec_reaper_destroy(state->reaper); |
1328 | } | |
d16005f8 PC |
1329 | |
1330 | lightrec_free_regcache(state->reg_cache); | |
1331 | lightrec_free_block_cache(state->block_cache); | |
1332 | lightrec_free_block(state->dispatcher); | |
1333 | lightrec_free_block(state->rw_generic_wrapper); | |
1334 | lightrec_free_block(state->rw_wrapper); | |
1335 | lightrec_free_block(state->mfc_wrapper); | |
1336 | lightrec_free_block(state->mtc_wrapper); | |
1337 | lightrec_free_block(state->rfe_wrapper); | |
1338 | lightrec_free_block(state->cp_wrapper); | |
1339 | lightrec_free_block(state->syscall_wrapper); | |
1340 | lightrec_free_block(state->break_wrapper); | |
1341 | finish_jit(); | |
1342 | ||
1343 | #if ENABLE_TINYMM | |
1344 | tinymm_shutdown(state->tinymm); | |
1345 | #endif | |
1346 | lightrec_unregister(MEM_FOR_LIGHTREC, sizeof(*state) + | |
1347 | sizeof(*state->code_lut) * CODE_LUT_SIZE); | |
1348 | free(state); | |
1349 | } | |
1350 | ||
1351 | void lightrec_invalidate(struct lightrec_state *state, u32 addr, u32 len) | |
1352 | { | |
1353 | u32 kaddr = kunseg(addr & ~0x3); | |
1354 | const struct lightrec_mem_map *map = lightrec_get_map(state, kaddr); | |
1355 | ||
1356 | if (map) { | |
1357 | while (map->mirror_of) | |
1358 | map = map->mirror_of; | |
1359 | ||
1360 | if (map != &state->maps[PSX_MAP_KERNEL_USER_RAM]) | |
1361 | return; | |
1362 | ||
1363 | /* Handle mirrors */ | |
1364 | kaddr &= (state->maps[PSX_MAP_KERNEL_USER_RAM].length - 1); | |
1365 | ||
1366 | for (; len > 4; len -= 4, kaddr += 4) | |
1367 | lightrec_invalidate_map(state, map, kaddr); | |
1368 | ||
1369 | lightrec_invalidate_map(state, map, kaddr); | |
1370 | } | |
1371 | } | |
1372 | ||
1373 | void lightrec_invalidate_all(struct lightrec_state *state) | |
1374 | { | |
1375 | memset(state->code_lut, 0, sizeof(*state->code_lut) * CODE_LUT_SIZE); | |
1376 | } | |
1377 | ||
1378 | void lightrec_set_invalidate_mode(struct lightrec_state *state, bool dma_only) | |
1379 | { | |
1380 | if (state->invalidate_from_dma_only != dma_only) | |
1381 | lightrec_invalidate_all(state); | |
1382 | ||
1383 | state->invalidate_from_dma_only = dma_only; | |
1384 | } | |
1385 | ||
1386 | void lightrec_set_exit_flags(struct lightrec_state *state, u32 flags) | |
1387 | { | |
1388 | if (flags != LIGHTREC_EXIT_NORMAL) { | |
1389 | state->exit_flags |= flags; | |
1390 | state->target_cycle = state->current_cycle; | |
1391 | } | |
1392 | } | |
1393 | ||
1394 | u32 lightrec_exit_flags(struct lightrec_state *state) | |
1395 | { | |
1396 | return state->exit_flags; | |
1397 | } | |
1398 | ||
1399 | void lightrec_dump_registers(struct lightrec_state *state, u32 regs[34]) | |
1400 | { | |
1401 | memcpy(regs, state->native_reg_cache, sizeof(state->native_reg_cache)); | |
1402 | } | |
1403 | ||
1404 | void lightrec_restore_registers(struct lightrec_state *state, u32 regs[34]) | |
1405 | { | |
1406 | memcpy(state->native_reg_cache, regs, sizeof(state->native_reg_cache)); | |
1407 | } | |
1408 | ||
1409 | u32 lightrec_current_cycle_count(const struct lightrec_state *state) | |
1410 | { | |
1411 | return state->current_cycle; | |
1412 | } | |
1413 | ||
1414 | void lightrec_reset_cycle_count(struct lightrec_state *state, u32 cycles) | |
1415 | { | |
1416 | state->current_cycle = cycles; | |
1417 | ||
1418 | if (state->target_cycle < cycles) | |
1419 | state->target_cycle = cycles; | |
1420 | } | |
1421 | ||
1422 | void lightrec_set_target_cycle_count(struct lightrec_state *state, u32 cycles) | |
1423 | { | |
1424 | if (state->exit_flags == LIGHTREC_EXIT_NORMAL) { | |
1425 | if (cycles < state->current_cycle) | |
1426 | cycles = state->current_cycle; | |
1427 | ||
1428 | state->target_cycle = cycles; | |
1429 | } | |
1430 | } |