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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 | 30 | |
d16005f8 PC |
31 | static struct block * lightrec_precompile_block(struct lightrec_state *state, |
32 | u32 pc); | |
98fa08a5 PC |
33 | static bool lightrec_block_is_fully_tagged(const struct block *block); |
34 | ||
35 | static void lightrec_mtc2(struct lightrec_state *state, u8 reg, u32 data); | |
36 | static u32 lightrec_mfc2(struct lightrec_state *state, u8 reg); | |
d16005f8 | 37 | |
a59e5536 | 38 | static void lightrec_default_sb(struct lightrec_state *state, u32 opcode, |
39 | void *host, u32 addr, u8 data) | |
40 | { | |
41 | *(u8 *)host = data; | |
42 | ||
43 | if (!state->invalidate_from_dma_only) | |
44 | lightrec_invalidate(state, addr, 1); | |
45 | } | |
46 | ||
47 | static void lightrec_default_sh(struct lightrec_state *state, u32 opcode, | |
48 | void *host, u32 addr, u16 data) | |
49 | { | |
50 | *(u16 *)host = HTOLE16(data); | |
51 | ||
52 | if (!state->invalidate_from_dma_only) | |
53 | lightrec_invalidate(state, addr, 2); | |
54 | } | |
55 | ||
56 | static void lightrec_default_sw(struct lightrec_state *state, u32 opcode, | |
57 | void *host, u32 addr, u32 data) | |
58 | { | |
59 | *(u32 *)host = HTOLE32(data); | |
60 | ||
61 | if (!state->invalidate_from_dma_only) | |
62 | lightrec_invalidate(state, addr, 4); | |
63 | } | |
64 | ||
65 | static u8 lightrec_default_lb(struct lightrec_state *state, | |
66 | u32 opcode, void *host, u32 addr) | |
67 | { | |
68 | return *(u8 *)host; | |
69 | } | |
70 | ||
71 | static u16 lightrec_default_lh(struct lightrec_state *state, | |
72 | u32 opcode, void *host, u32 addr) | |
73 | { | |
74 | return LE16TOH(*(u16 *)host); | |
75 | } | |
76 | ||
77 | static u32 lightrec_default_lw(struct lightrec_state *state, | |
78 | u32 opcode, void *host, u32 addr) | |
79 | { | |
80 | return LE32TOH(*(u32 *)host); | |
81 | } | |
82 | ||
83 | static const struct lightrec_mem_map_ops lightrec_default_ops = { | |
84 | .sb = lightrec_default_sb, | |
85 | .sh = lightrec_default_sh, | |
86 | .sw = lightrec_default_sw, | |
87 | .lb = lightrec_default_lb, | |
88 | .lh = lightrec_default_lh, | |
89 | .lw = lightrec_default_lw, | |
90 | }; | |
91 | ||
98fa08a5 PC |
92 | static void __segfault_cb(struct lightrec_state *state, u32 addr, |
93 | const struct block *block) | |
d16005f8 PC |
94 | { |
95 | lightrec_set_exit_flags(state, LIGHTREC_EXIT_SEGFAULT); | |
96 | pr_err("Segmentation fault in recompiled code: invalid " | |
97 | "load/store at address 0x%08x\n", addr); | |
98fa08a5 PC |
98 | if (block) |
99 | pr_err("Was executing block PC 0x%08x\n", block->pc); | |
d16005f8 PC |
100 | } |
101 | ||
a59e5536 | 102 | static void lightrec_swl(struct lightrec_state *state, |
103 | const struct lightrec_mem_map_ops *ops, | |
104 | u32 opcode, void *host, u32 addr, u32 data) | |
d16005f8 | 105 | { |
a59e5536 | 106 | unsigned int shift = addr & 0x3; |
13b02197 | 107 | unsigned int mask = shift < 3 ? GENMASK(31, (shift + 1) * 8) : 0; |
a59e5536 | 108 | u32 old_data; |
109 | ||
110 | /* Align to 32 bits */ | |
111 | addr &= ~3; | |
112 | host = (void *)((uintptr_t)host & ~3); | |
113 | ||
114 | old_data = ops->lw(state, opcode, host, addr); | |
115 | ||
116 | data = (data >> ((3 - shift) * 8)) | (old_data & mask); | |
117 | ||
118 | ops->sw(state, opcode, host, addr, data); | |
119 | } | |
120 | ||
121 | static void lightrec_swr(struct lightrec_state *state, | |
122 | const struct lightrec_mem_map_ops *ops, | |
123 | u32 opcode, void *host, u32 addr, u32 data) | |
124 | { | |
125 | unsigned int shift = addr & 0x3; | |
126 | unsigned int mask = (1 << (shift * 8)) - 1; | |
127 | u32 old_data; | |
128 | ||
129 | /* Align to 32 bits */ | |
130 | addr &= ~3; | |
131 | host = (void *)((uintptr_t)host & ~3); | |
132 | ||
133 | old_data = ops->lw(state, opcode, host, addr); | |
134 | ||
135 | data = (data << (shift * 8)) | (old_data & mask); | |
136 | ||
137 | ops->sw(state, opcode, host, addr, data); | |
138 | } | |
139 | ||
140 | static void lightrec_swc2(struct lightrec_state *state, union code op, | |
141 | const struct lightrec_mem_map_ops *ops, | |
142 | void *host, u32 addr) | |
143 | { | |
98fa08a5 | 144 | u32 data = lightrec_mfc2(state, op.i.rt); |
a59e5536 | 145 | |
146 | ops->sw(state, op.opcode, host, addr, data); | |
147 | } | |
148 | ||
149 | static u32 lightrec_lwl(struct lightrec_state *state, | |
150 | const struct lightrec_mem_map_ops *ops, | |
151 | u32 opcode, void *host, u32 addr, u32 data) | |
152 | { | |
153 | unsigned int shift = addr & 0x3; | |
154 | unsigned int mask = (1 << (24 - shift * 8)) - 1; | |
155 | u32 old_data; | |
156 | ||
157 | /* Align to 32 bits */ | |
158 | addr &= ~3; | |
159 | host = (void *)((uintptr_t)host & ~3); | |
160 | ||
161 | old_data = ops->lw(state, opcode, host, addr); | |
162 | ||
163 | return (data & mask) | (old_data << (24 - shift * 8)); | |
164 | } | |
165 | ||
166 | static u32 lightrec_lwr(struct lightrec_state *state, | |
167 | const struct lightrec_mem_map_ops *ops, | |
168 | u32 opcode, void *host, u32 addr, u32 data) | |
169 | { | |
170 | unsigned int shift = addr & 0x3; | |
13b02197 | 171 | unsigned int mask = shift ? GENMASK(31, 32 - shift * 8) : 0; |
a59e5536 | 172 | u32 old_data; |
173 | ||
174 | /* Align to 32 bits */ | |
175 | addr &= ~3; | |
176 | host = (void *)((uintptr_t)host & ~3); | |
177 | ||
178 | old_data = ops->lw(state, opcode, host, addr); | |
179 | ||
180 | return (data & mask) | (old_data >> (shift * 8)); | |
181 | } | |
182 | ||
183 | static void lightrec_lwc2(struct lightrec_state *state, union code op, | |
184 | const struct lightrec_mem_map_ops *ops, | |
185 | void *host, u32 addr) | |
186 | { | |
187 | u32 data = ops->lw(state, op.opcode, host, addr); | |
188 | ||
98fa08a5 | 189 | lightrec_mtc2(state, op.i.rt, data); |
d16005f8 PC |
190 | } |
191 | ||
192 | static void lightrec_invalidate_map(struct lightrec_state *state, | |
98fa08a5 | 193 | const struct lightrec_mem_map *map, u32 addr, u32 len) |
d16005f8 | 194 | { |
98fa08a5 | 195 | if (map == &state->maps[PSX_MAP_KERNEL_USER_RAM]) { |
02487de7 PC |
196 | memset(lut_address(state, lut_offset(addr)), 0, |
197 | ((len + 3) / 4) * lut_elm_size(state)); | |
98fa08a5 | 198 | } |
d16005f8 PC |
199 | } |
200 | ||
02487de7 PC |
201 | enum psx_map |
202 | lightrec_get_map_idx(struct lightrec_state *state, u32 kaddr) | |
d16005f8 | 203 | { |
98fa08a5 | 204 | const struct lightrec_mem_map *map; |
d16005f8 PC |
205 | unsigned int i; |
206 | ||
207 | for (i = 0; i < state->nb_maps; i++) { | |
02487de7 | 208 | map = &state->maps[i]; |
d16005f8 | 209 | |
02487de7 PC |
210 | if (kaddr >= map->pc && kaddr < map->pc + map->length) |
211 | return (enum psx_map) i; | |
d16005f8 PC |
212 | } |
213 | ||
02487de7 PC |
214 | return PSX_MAP_UNKNOWN; |
215 | } | |
216 | ||
217 | const struct lightrec_mem_map * | |
218 | lightrec_get_map(struct lightrec_state *state, void **host, u32 kaddr) | |
219 | { | |
220 | const struct lightrec_mem_map *map; | |
221 | enum psx_map idx; | |
222 | u32 addr; | |
223 | ||
224 | idx = lightrec_get_map_idx(state, kaddr); | |
225 | if (idx == PSX_MAP_UNKNOWN) | |
98fa08a5 PC |
226 | return NULL; |
227 | ||
02487de7 | 228 | map = &state->maps[idx]; |
98fa08a5 PC |
229 | addr = kaddr - map->pc; |
230 | ||
231 | while (map->mirror_of) | |
232 | map = map->mirror_of; | |
233 | ||
234 | if (host) | |
235 | *host = map->address + addr; | |
236 | ||
237 | return map; | |
d16005f8 PC |
238 | } |
239 | ||
240 | u32 lightrec_rw(struct lightrec_state *state, union code op, | |
03535202 | 241 | u32 addr, u32 data, u32 *flags, struct block *block) |
d16005f8 PC |
242 | { |
243 | const struct lightrec_mem_map *map; | |
a59e5536 | 244 | const struct lightrec_mem_map_ops *ops; |
98fa08a5 | 245 | u32 opcode = op.opcode; |
a59e5536 | 246 | void *host; |
d16005f8 PC |
247 | |
248 | addr += (s16) op.i.imm; | |
d16005f8 | 249 | |
98fa08a5 | 250 | map = lightrec_get_map(state, &host, kunseg(addr)); |
d16005f8 | 251 | if (!map) { |
98fa08a5 | 252 | __segfault_cb(state, addr, block); |
d16005f8 PC |
253 | return 0; |
254 | } | |
255 | ||
d16005f8 | 256 | |
6ce0b00a | 257 | if (likely(!map->ops)) { |
22eee2ac PC |
258 | if (flags && !LIGHTREC_FLAGS_GET_IO_MODE(*flags)) |
259 | *flags |= LIGHTREC_IO_MODE(LIGHTREC_IO_DIRECT); | |
d16005f8 | 260 | |
a59e5536 | 261 | ops = &lightrec_default_ops; |
6ce0b00a PC |
262 | } else if (flags && |
263 | LIGHTREC_FLAGS_GET_IO_MODE(*flags) == LIGHTREC_IO_DIRECT_HW) { | |
264 | ops = &lightrec_default_ops; | |
265 | } else { | |
266 | if (flags && !LIGHTREC_FLAGS_GET_IO_MODE(*flags)) | |
267 | *flags |= LIGHTREC_IO_MODE(LIGHTREC_IO_HW); | |
268 | ||
269 | ops = map->ops; | |
a59e5536 | 270 | } |
d16005f8 PC |
271 | |
272 | switch (op.i.op) { | |
273 | case OP_SB: | |
a59e5536 | 274 | ops->sb(state, opcode, host, addr, (u8) data); |
d16005f8 PC |
275 | return 0; |
276 | case OP_SH: | |
a59e5536 | 277 | ops->sh(state, opcode, host, addr, (u16) data); |
d16005f8 PC |
278 | return 0; |
279 | case OP_SWL: | |
a59e5536 | 280 | lightrec_swl(state, ops, opcode, host, addr, data); |
d16005f8 PC |
281 | return 0; |
282 | case OP_SWR: | |
a59e5536 | 283 | lightrec_swr(state, ops, opcode, host, addr, data); |
d16005f8 PC |
284 | return 0; |
285 | case OP_SW: | |
a59e5536 | 286 | ops->sw(state, opcode, host, addr, data); |
d16005f8 PC |
287 | return 0; |
288 | case OP_SWC2: | |
a59e5536 | 289 | lightrec_swc2(state, op, ops, host, addr); |
d16005f8 PC |
290 | return 0; |
291 | case OP_LB: | |
a59e5536 | 292 | return (s32) (s8) ops->lb(state, opcode, host, addr); |
d16005f8 | 293 | case OP_LBU: |
a59e5536 | 294 | return ops->lb(state, opcode, host, addr); |
d16005f8 | 295 | case OP_LH: |
a59e5536 | 296 | return (s32) (s16) ops->lh(state, opcode, host, addr); |
d16005f8 | 297 | case OP_LHU: |
a59e5536 | 298 | return ops->lh(state, opcode, host, addr); |
d16005f8 | 299 | case OP_LWC2: |
a59e5536 | 300 | lightrec_lwc2(state, op, ops, host, addr); |
d16005f8 | 301 | return 0; |
a59e5536 | 302 | case OP_LWL: |
303 | return lightrec_lwl(state, ops, opcode, host, addr, data); | |
304 | case OP_LWR: | |
305 | return lightrec_lwr(state, ops, opcode, host, addr, data); | |
d16005f8 PC |
306 | case OP_LW: |
307 | default: | |
a59e5536 | 308 | return ops->lw(state, opcode, host, addr); |
d16005f8 PC |
309 | } |
310 | } | |
311 | ||
312 | static void lightrec_rw_helper(struct lightrec_state *state, | |
03535202 | 313 | union code op, u32 *flags, |
98fa08a5 | 314 | struct block *block) |
d16005f8 | 315 | { |
98fa08a5 PC |
316 | u32 ret = lightrec_rw(state, op, state->regs.gpr[op.i.rs], |
317 | state->regs.gpr[op.i.rt], flags, block); | |
d16005f8 PC |
318 | |
319 | switch (op.i.op) { | |
320 | case OP_LB: | |
321 | case OP_LBU: | |
322 | case OP_LH: | |
323 | case OP_LHU: | |
324 | case OP_LWL: | |
325 | case OP_LWR: | |
326 | case OP_LW: | |
327 | if (op.i.rt) | |
98fa08a5 | 328 | state->regs.gpr[op.i.rt] = ret; |
d8b04acd PC |
329 | fallthrough; |
330 | default: | |
d16005f8 PC |
331 | break; |
332 | } | |
333 | } | |
334 | ||
03535202 | 335 | static void lightrec_rw_cb(struct lightrec_state *state, u32 arg) |
d16005f8 | 336 | { |
03535202 | 337 | lightrec_rw_helper(state, (union code) arg, NULL, NULL); |
d16005f8 PC |
338 | } |
339 | ||
03535202 | 340 | static void lightrec_rw_generic_cb(struct lightrec_state *state, u32 arg) |
d16005f8 | 341 | { |
98fa08a5 PC |
342 | struct block *block; |
343 | struct opcode *op; | |
344 | bool was_tagged; | |
345 | u16 offset = (u16)arg; | |
ba3814c1 | 346 | u16 old_flags; |
98fa08a5 PC |
347 | |
348 | block = lightrec_find_block_from_lut(state->block_cache, | |
349 | arg >> 16, state->next_pc); | |
350 | if (unlikely(!block)) { | |
351 | pr_err("rw_generic: No block found in LUT for PC 0x%x offset 0x%x\n", | |
352 | state->next_pc, offset); | |
ba3814c1 | 353 | lightrec_set_exit_flags(state, LIGHTREC_EXIT_SEGFAULT); |
98fa08a5 PC |
354 | return; |
355 | } | |
356 | ||
357 | op = &block->opcode_list[offset]; | |
22eee2ac | 358 | was_tagged = LIGHTREC_FLAGS_GET_IO_MODE(op->flags); |
d16005f8 | 359 | |
98fa08a5 | 360 | lightrec_rw_helper(state, op->c, &op->flags, block); |
d16005f8 PC |
361 | |
362 | if (!was_tagged) { | |
ba3814c1 | 363 | old_flags = block_set_flags(block, BLOCK_SHOULD_RECOMPILE); |
d16005f8 | 364 | |
ba3814c1 PC |
365 | if (!(old_flags & BLOCK_SHOULD_RECOMPILE)) { |
366 | pr_debug("Opcode of block at PC 0x%08x has been tagged" | |
367 | " - flag for recompilation\n", block->pc); | |
368 | ||
369 | lut_write(state, lut_offset(block->pc), NULL); | |
370 | } | |
d16005f8 PC |
371 | } |
372 | } | |
373 | ||
98fa08a5 | 374 | static u32 clamp_s32(s32 val, s32 min, s32 max) |
d16005f8 | 375 | { |
98fa08a5 PC |
376 | return val < min ? min : val > max ? max : val; |
377 | } | |
d16005f8 | 378 | |
11357fef PC |
379 | static u16 load_u16(u32 *ptr) |
380 | { | |
381 | return ((struct u16x2 *) ptr)->l; | |
382 | } | |
383 | ||
384 | static void store_u16(u32 *ptr, u16 value) | |
385 | { | |
386 | ((struct u16x2 *) ptr)->l = value; | |
387 | } | |
388 | ||
98fa08a5 PC |
389 | static u32 lightrec_mfc2(struct lightrec_state *state, u8 reg) |
390 | { | |
391 | s16 gteir1, gteir2, gteir3; | |
392 | ||
393 | switch (reg) { | |
394 | case 1: | |
395 | case 3: | |
396 | case 5: | |
397 | case 8: | |
398 | case 9: | |
399 | case 10: | |
400 | case 11: | |
11357fef | 401 | return (s32)(s16) load_u16(&state->regs.cp2d[reg]); |
98fa08a5 PC |
402 | case 7: |
403 | case 16: | |
404 | case 17: | |
405 | case 18: | |
406 | case 19: | |
11357fef | 407 | return load_u16(&state->regs.cp2d[reg]); |
98fa08a5 PC |
408 | case 28: |
409 | case 29: | |
11357fef PC |
410 | gteir1 = (s16) load_u16(&state->regs.cp2d[9]); |
411 | gteir2 = (s16) load_u16(&state->regs.cp2d[10]); | |
412 | gteir3 = (s16) load_u16(&state->regs.cp2d[11]); | |
98fa08a5 PC |
413 | |
414 | return clamp_s32(gteir1 >> 7, 0, 0x1f) << 0 | | |
415 | clamp_s32(gteir2 >> 7, 0, 0x1f) << 5 | | |
416 | clamp_s32(gteir3 >> 7, 0, 0x1f) << 10; | |
417 | case 15: | |
418 | reg = 14; | |
d8b04acd PC |
419 | fallthrough; |
420 | default: | |
98fa08a5 PC |
421 | return state->regs.cp2d[reg]; |
422 | } | |
423 | } | |
d16005f8 | 424 | |
98fa08a5 PC |
425 | u32 lightrec_mfc(struct lightrec_state *state, union code op) |
426 | { | |
ba3814c1 PC |
427 | u32 val; |
428 | ||
98fa08a5 PC |
429 | if (op.i.op == OP_CP0) |
430 | return state->regs.cp0[op.r.rd]; | |
431 | else if (op.r.rs == OP_CP2_BASIC_MFC2) | |
fdf33147 PC |
432 | val = lightrec_mfc2(state, op.r.rd); |
433 | else { | |
434 | val = state->regs.cp2c[op.r.rd]; | |
435 | ||
436 | switch (op.r.rd) { | |
437 | case 4: | |
438 | case 12: | |
439 | case 20: | |
440 | case 26: | |
441 | case 27: | |
442 | case 29: | |
443 | case 30: | |
444 | val = (u32)(s16)val; | |
445 | fallthrough; | |
446 | default: | |
447 | break; | |
448 | } | |
449 | } | |
ba3814c1 | 450 | |
fdf33147 PC |
451 | if (state->ops.cop2_notify) |
452 | (*state->ops.cop2_notify)(state, op.opcode, val); | |
ba3814c1 | 453 | |
fdf33147 PC |
454 | return val; |
455 | } | |
456 | ||
457 | static void lightrec_mfc_cb(struct lightrec_state *state, union code op) | |
458 | { | |
459 | u32 rt = lightrec_mfc(state, op); | |
460 | ||
461 | if (op.r.rt) | |
462 | state->regs.gpr[op.r.rt] = rt; | |
d16005f8 PC |
463 | } |
464 | ||
98fa08a5 | 465 | static void lightrec_mtc0(struct lightrec_state *state, u8 reg, u32 data) |
d16005f8 | 466 | { |
fd58fa32 | 467 | u32 status, oldstatus, cause; |
98fa08a5 PC |
468 | |
469 | switch (reg) { | |
470 | case 1: | |
471 | case 4: | |
472 | case 8: | |
473 | case 14: | |
474 | case 15: | |
475 | /* Those registers are read-only */ | |
476 | return; | |
fd58fa32 | 477 | default: |
98fa08a5 PC |
478 | break; |
479 | } | |
d16005f8 | 480 | |
98fa08a5 PC |
481 | if (reg == 12) { |
482 | status = state->regs.cp0[12]; | |
fd58fa32 | 483 | oldstatus = status; |
d16005f8 | 484 | |
98fa08a5 PC |
485 | if (status & ~data & BIT(16)) { |
486 | state->ops.enable_ram(state, true); | |
487 | lightrec_invalidate_all(state); | |
488 | } else if (~status & data & BIT(16)) { | |
489 | state->ops.enable_ram(state, false); | |
490 | } | |
491 | } | |
492 | ||
fd58fa32 PC |
493 | if (reg == 13) { |
494 | state->regs.cp0[13] &= ~0x300; | |
495 | state->regs.cp0[13] |= data & 0x300; | |
496 | } else { | |
497 | state->regs.cp0[reg] = data; | |
498 | } | |
98fa08a5 PC |
499 | |
500 | if (reg == 12 || reg == 13) { | |
501 | cause = state->regs.cp0[13]; | |
502 | status = state->regs.cp0[12]; | |
503 | ||
fd58fa32 | 504 | /* Handle software interrupts */ |
98fa08a5 PC |
505 | if (!!(status & cause & 0x300) & status) |
506 | lightrec_set_exit_flags(state, LIGHTREC_EXIT_CHECK_INTERRUPT); | |
fd58fa32 PC |
507 | |
508 | /* Handle hardware interrupts */ | |
509 | if (reg == 12 && !(~status & 0x401) && (~oldstatus & 0x401)) | |
510 | lightrec_set_exit_flags(state, LIGHTREC_EXIT_CHECK_INTERRUPT); | |
98fa08a5 PC |
511 | } |
512 | } | |
513 | ||
514 | static u32 count_leading_bits(s32 data) | |
515 | { | |
98fa08a5 PC |
516 | u32 cnt = 33; |
517 | ||
de742fa0 PC |
518 | #ifdef __has_builtin |
519 | #if __has_builtin(__builtin_clrsb) | |
520 | return 1 + __builtin_clrsb(data); | |
521 | #endif | |
522 | #endif | |
523 | ||
98fa08a5 PC |
524 | data = (data ^ (data >> 31)) << 1; |
525 | ||
526 | do { | |
527 | cnt -= 1; | |
528 | data >>= 1; | |
529 | } while (data); | |
530 | ||
531 | return cnt; | |
98fa08a5 PC |
532 | } |
533 | ||
534 | static void lightrec_mtc2(struct lightrec_state *state, u8 reg, u32 data) | |
535 | { | |
536 | switch (reg) { | |
537 | case 15: | |
538 | state->regs.cp2d[12] = state->regs.cp2d[13]; | |
539 | state->regs.cp2d[13] = state->regs.cp2d[14]; | |
540 | state->regs.cp2d[14] = data; | |
541 | break; | |
542 | case 28: | |
543 | state->regs.cp2d[9] = (data << 7) & 0xf80; | |
544 | state->regs.cp2d[10] = (data << 2) & 0xf80; | |
545 | state->regs.cp2d[11] = (data >> 3) & 0xf80; | |
546 | break; | |
547 | case 31: | |
548 | return; | |
549 | case 30: | |
550 | state->regs.cp2d[31] = count_leading_bits((s32) data); | |
d8b04acd PC |
551 | fallthrough; |
552 | default: | |
98fa08a5 PC |
553 | state->regs.cp2d[reg] = data; |
554 | break; | |
555 | } | |
556 | } | |
d16005f8 | 557 | |
98fa08a5 PC |
558 | static void lightrec_ctc2(struct lightrec_state *state, u8 reg, u32 data) |
559 | { | |
560 | switch (reg) { | |
561 | case 4: | |
562 | case 12: | |
563 | case 20: | |
564 | case 26: | |
565 | case 27: | |
566 | case 29: | |
567 | case 30: | |
11357fef | 568 | store_u16(&state->regs.cp2c[reg], data); |
98fa08a5 PC |
569 | break; |
570 | case 31: | |
571 | data = (data & 0x7ffff000) | !!(data & 0x7f87e000) << 31; | |
d8b04acd PC |
572 | fallthrough; |
573 | default: | |
11357fef | 574 | state->regs.cp2c[reg] = data; |
98fa08a5 PC |
575 | break; |
576 | } | |
98fa08a5 PC |
577 | } |
578 | ||
579 | void lightrec_mtc(struct lightrec_state *state, union code op, u32 data) | |
580 | { | |
fdf33147 | 581 | if (op.i.op == OP_CP0) { |
98fa08a5 | 582 | lightrec_mtc0(state, op.r.rd, data); |
fdf33147 PC |
583 | } else { |
584 | if (op.r.rs == OP_CP2_BASIC_CTC2) | |
585 | lightrec_ctc2(state, op.r.rd, data); | |
586 | else | |
587 | lightrec_mtc2(state, op.r.rd, data); | |
588 | ||
589 | if (state->ops.cop2_notify) | |
590 | (*state->ops.cop2_notify)(state, op.opcode, data); | |
591 | } | |
d16005f8 PC |
592 | } |
593 | ||
03535202 | 594 | static void lightrec_mtc_cb(struct lightrec_state *state, u32 arg) |
d16005f8 | 595 | { |
03535202 | 596 | union code op = (union code) arg; |
22eee2ac | 597 | |
98fa08a5 | 598 | lightrec_mtc(state, op, state->regs.gpr[op.r.rt]); |
d16005f8 PC |
599 | } |
600 | ||
98fa08a5 | 601 | void lightrec_rfe(struct lightrec_state *state) |
d16005f8 PC |
602 | { |
603 | u32 status; | |
604 | ||
605 | /* Read CP0 Status register (r12) */ | |
98fa08a5 | 606 | status = state->regs.cp0[12]; |
d16005f8 PC |
607 | |
608 | /* Switch the bits */ | |
609 | status = ((status & 0x3c) >> 2) | (status & ~0xf); | |
610 | ||
611 | /* Write it back */ | |
98fa08a5 | 612 | lightrec_mtc0(state, 12, status); |
d16005f8 PC |
613 | } |
614 | ||
98fa08a5 | 615 | void lightrec_cp(struct lightrec_state *state, union code op) |
d16005f8 | 616 | { |
98fa08a5 PC |
617 | if (op.i.op == OP_CP0) { |
618 | pr_err("Invalid CP opcode to coprocessor #0\n"); | |
619 | return; | |
620 | } | |
d16005f8 | 621 | |
98fa08a5 | 622 | (*state->ops.cop2_op)(state, op.opcode); |
d16005f8 PC |
623 | } |
624 | ||
03535202 | 625 | static void lightrec_cp_cb(struct lightrec_state *state, u32 arg) |
22eee2ac | 626 | { |
03535202 | 627 | lightrec_cp(state, (union code) arg); |
22eee2ac PC |
628 | } |
629 | ||
03535202 | 630 | static struct block * lightrec_get_block(struct lightrec_state *state, u32 pc) |
d16005f8 PC |
631 | { |
632 | struct block *block = lightrec_find_block(state->block_cache, pc); | |
ba3814c1 | 633 | u8 old_flags; |
d16005f8 | 634 | |
98fa08a5 | 635 | if (block && lightrec_block_is_outdated(state, block)) { |
d16005f8 PC |
636 | pr_debug("Block at PC 0x%08x is outdated!\n", block->pc); |
637 | ||
ba3814c1 PC |
638 | old_flags = block_set_flags(block, BLOCK_IS_DEAD); |
639 | if (!(old_flags & BLOCK_IS_DEAD)) { | |
640 | /* Make sure the recompiler isn't processing the block | |
641 | * we'll destroy */ | |
642 | if (ENABLE_THREADED_COMPILER) | |
643 | lightrec_recompiler_remove(state->rec, block); | |
644 | ||
645 | lightrec_unregister_block(state->block_cache, block); | |
646 | remove_from_code_lut(state->block_cache, block); | |
647 | lightrec_free_block(state, block); | |
648 | } | |
d16005f8 | 649 | |
d16005f8 PC |
650 | block = NULL; |
651 | } | |
652 | ||
653 | if (!block) { | |
654 | block = lightrec_precompile_block(state, pc); | |
655 | if (!block) { | |
656 | pr_err("Unable to recompile block at PC 0x%x\n", pc); | |
657 | lightrec_set_exit_flags(state, LIGHTREC_EXIT_SEGFAULT); | |
658 | return NULL; | |
659 | } | |
660 | ||
661 | lightrec_register_block(state->block_cache, block); | |
662 | } | |
663 | ||
664 | return block; | |
665 | } | |
666 | ||
667 | static void * get_next_block_func(struct lightrec_state *state, u32 pc) | |
668 | { | |
669 | struct block *block; | |
670 | bool should_recompile; | |
671 | void *func; | |
d8b04acd | 672 | int err; |
d16005f8 PC |
673 | |
674 | for (;;) { | |
d8b04acd | 675 | func = lut_read(state, lut_offset(pc)); |
d16005f8 | 676 | if (func && func != state->get_next_block) |
98fa08a5 | 677 | break; |
d16005f8 PC |
678 | |
679 | block = lightrec_get_block(state, pc); | |
680 | ||
681 | if (unlikely(!block)) | |
98fa08a5 PC |
682 | break; |
683 | ||
ba3814c1 PC |
684 | if (OPT_REPLACE_MEMSET && |
685 | block_has_flag(block, BLOCK_IS_MEMSET)) { | |
98fa08a5 PC |
686 | func = state->memset_func; |
687 | break; | |
688 | } | |
d16005f8 | 689 | |
ba3814c1 PC |
690 | should_recompile = block_has_flag(block, BLOCK_SHOULD_RECOMPILE) && |
691 | !block_has_flag(block, BLOCK_IS_DEAD); | |
d16005f8 PC |
692 | |
693 | if (unlikely(should_recompile)) { | |
a59e5536 | 694 | pr_debug("Block at PC 0x%08x should recompile\n", pc); |
d16005f8 | 695 | |
d8b04acd | 696 | if (ENABLE_THREADED_COMPILER) { |
a59e5536 | 697 | lightrec_recompiler_add(state->rec, block); |
d8b04acd PC |
698 | } else { |
699 | err = lightrec_compile_block(state->cstate, block); | |
700 | if (err) { | |
701 | state->exit_flags = LIGHTREC_EXIT_NOMEM; | |
702 | return NULL; | |
703 | } | |
704 | } | |
d16005f8 PC |
705 | } |
706 | ||
707 | if (ENABLE_THREADED_COMPILER && likely(!should_recompile)) | |
98fa08a5 | 708 | func = lightrec_recompiler_run_first_pass(state, block, &pc); |
d16005f8 PC |
709 | else |
710 | func = block->function; | |
711 | ||
712 | if (likely(func)) | |
98fa08a5 | 713 | break; |
d16005f8 | 714 | |
ba3814c1 | 715 | if (unlikely(block_has_flag(block, BLOCK_NEVER_COMPILE))) { |
98fa08a5 PC |
716 | pc = lightrec_emulate_block(state, block, pc); |
717 | ||
718 | } else if (!ENABLE_THREADED_COMPILER) { | |
719 | /* Block wasn't compiled yet - run the interpreter */ | |
ba3814c1 | 720 | if (block_has_flag(block, BLOCK_FULLY_TAGGED)) |
98fa08a5 PC |
721 | pr_debug("Block fully tagged, skipping first pass\n"); |
722 | else if (ENABLE_FIRST_PASS && likely(!should_recompile)) | |
723 | pc = lightrec_emulate_block(state, block, pc); | |
d16005f8 | 724 | |
d16005f8 | 725 | /* Then compile it using the profiled data */ |
d8b04acd PC |
726 | err = lightrec_compile_block(state->cstate, block); |
727 | if (err) { | |
728 | state->exit_flags = LIGHTREC_EXIT_NOMEM; | |
729 | return NULL; | |
730 | } | |
ba3814c1 PC |
731 | } else if (unlikely(block_has_flag(block, BLOCK_IS_DEAD))) { |
732 | /* | |
733 | * If the block is dead but has never been compiled, | |
734 | * then its function pointer is NULL and we cannot | |
735 | * execute the block. In that case, reap all the dead | |
736 | * blocks now, and in the next loop we will create a | |
737 | * new block. | |
738 | */ | |
739 | lightrec_reaper_reap(state->reaper); | |
98fa08a5 PC |
740 | } else { |
741 | lightrec_recompiler_add(state->rec, block); | |
d16005f8 PC |
742 | } |
743 | ||
744 | if (state->exit_flags != LIGHTREC_EXIT_NORMAL || | |
98fa08a5 PC |
745 | state->current_cycle >= state->target_cycle) |
746 | break; | |
d16005f8 | 747 | } |
d16005f8 | 748 | |
98fa08a5 PC |
749 | state->next_pc = pc; |
750 | return func; | |
d16005f8 PC |
751 | } |
752 | ||
d8b04acd PC |
753 | static void * lightrec_alloc_code(struct lightrec_state *state, size_t size) |
754 | { | |
755 | void *code; | |
756 | ||
757 | if (ENABLE_THREADED_COMPILER) | |
758 | lightrec_code_alloc_lock(state); | |
759 | ||
760 | code = tlsf_malloc(state->tlsf, size); | |
761 | ||
762 | if (ENABLE_THREADED_COMPILER) | |
763 | lightrec_code_alloc_unlock(state); | |
764 | ||
765 | return code; | |
766 | } | |
767 | ||
768 | static void lightrec_realloc_code(struct lightrec_state *state, | |
769 | void *ptr, size_t size) | |
770 | { | |
771 | /* NOTE: 'size' MUST be smaller than the size specified during | |
772 | * the allocation. */ | |
773 | ||
774 | if (ENABLE_THREADED_COMPILER) | |
775 | lightrec_code_alloc_lock(state); | |
776 | ||
777 | tlsf_realloc(state->tlsf, ptr, size); | |
778 | ||
779 | if (ENABLE_THREADED_COMPILER) | |
780 | lightrec_code_alloc_unlock(state); | |
781 | } | |
782 | ||
783 | static void lightrec_free_code(struct lightrec_state *state, void *ptr) | |
784 | { | |
785 | if (ENABLE_THREADED_COMPILER) | |
786 | lightrec_code_alloc_lock(state); | |
787 | ||
788 | tlsf_free(state->tlsf, ptr); | |
789 | ||
790 | if (ENABLE_THREADED_COMPILER) | |
791 | lightrec_code_alloc_unlock(state); | |
792 | } | |
793 | ||
02487de7 | 794 | static void * lightrec_emit_code(struct lightrec_state *state, |
d8b04acd | 795 | const struct block *block, |
02487de7 PC |
796 | jit_state_t *_jit, unsigned int *size) |
797 | { | |
798 | bool has_code_buffer = ENABLE_CODE_BUFFER && state->tlsf; | |
799 | jit_word_t code_size, new_code_size; | |
800 | void *code; | |
801 | ||
802 | jit_realize(); | |
803 | ||
804 | if (!ENABLE_DISASSEMBLER) | |
805 | jit_set_data(NULL, 0, JIT_DISABLE_DATA | JIT_DISABLE_NOTE); | |
806 | ||
807 | if (has_code_buffer) { | |
808 | jit_get_code(&code_size); | |
d8b04acd PC |
809 | code = lightrec_alloc_code(state, (size_t) code_size); |
810 | ||
811 | if (!code) { | |
812 | if (ENABLE_THREADED_COMPILER) { | |
813 | /* If we're using the threaded compiler, return | |
814 | * an allocation error here. The threaded | |
815 | * compiler will then empty its job queue and | |
816 | * request a code flush using the reaper. */ | |
817 | return NULL; | |
818 | } | |
819 | ||
820 | /* Remove outdated blocks, and try again */ | |
821 | lightrec_remove_outdated_blocks(state->block_cache, block); | |
822 | ||
823 | pr_debug("Re-try to alloc %zu bytes...\n", code_size); | |
824 | ||
825 | code = lightrec_alloc_code(state, code_size); | |
826 | if (!code) { | |
827 | pr_err("Could not alloc even after removing old blocks!\n"); | |
828 | return NULL; | |
829 | } | |
830 | } | |
02487de7 PC |
831 | |
832 | jit_set_code(code, code_size); | |
833 | } | |
834 | ||
835 | code = jit_emit(); | |
836 | ||
837 | jit_get_code(&new_code_size); | |
838 | lightrec_register(MEM_FOR_CODE, new_code_size); | |
839 | ||
840 | if (has_code_buffer) { | |
d8b04acd | 841 | lightrec_realloc_code(state, code, (size_t) new_code_size); |
02487de7 PC |
842 | |
843 | pr_debug("Creating code block at address 0x%" PRIxPTR ", " | |
844 | "code size: %" PRIuPTR " new: %" PRIuPTR "\n", | |
845 | (uintptr_t) code, code_size, new_code_size); | |
846 | } | |
847 | ||
848 | *size = (unsigned int) new_code_size; | |
849 | ||
850 | return code; | |
851 | } | |
852 | ||
98fa08a5 | 853 | static struct block * generate_wrapper(struct lightrec_state *state) |
d16005f8 PC |
854 | { |
855 | struct block *block; | |
856 | jit_state_t *_jit; | |
857 | unsigned int i; | |
fd58fa32 | 858 | jit_node_t *addr[C_WRAPPERS_COUNT - 1]; |
ba3814c1 | 859 | jit_node_t *to_end[C_WRAPPERS_COUNT - 1]; |
d16005f8 PC |
860 | |
861 | block = lightrec_malloc(state, MEM_FOR_IR, sizeof(*block)); | |
862 | if (!block) | |
863 | goto err_no_mem; | |
864 | ||
865 | _jit = jit_new_state(); | |
866 | if (!_jit) | |
867 | goto err_free_block; | |
868 | ||
869 | jit_name("RW wrapper"); | |
870 | jit_note(__FILE__, __LINE__); | |
871 | ||
872 | /* Wrapper entry point */ | |
873 | jit_prolog(); | |
fd58fa32 PC |
874 | jit_tramp(256); |
875 | ||
ba3814c1 | 876 | /* Add entry points */ |
fd58fa32 | 877 | for (i = C_WRAPPERS_COUNT - 1; i > 0; i--) { |
ba3814c1 PC |
878 | jit_ldxi(JIT_R1, LIGHTREC_REG_STATE, |
879 | offsetof(struct lightrec_state, c_wrappers[i])); | |
880 | to_end[i - 1] = jit_b(); | |
fd58fa32 PC |
881 | addr[i - 1] = jit_indirect(); |
882 | } | |
883 | ||
ba3814c1 PC |
884 | jit_ldxi(JIT_R1, LIGHTREC_REG_STATE, |
885 | offsetof(struct lightrec_state, c_wrappers[0])); | |
886 | ||
887 | for (i = 0; i < C_WRAPPERS_COUNT - 1; i++) | |
888 | jit_patch(to_end[i]); | |
889 | ||
fd58fa32 PC |
890 | jit_epilog(); |
891 | jit_prolog(); | |
d16005f8 | 892 | |
fd58fa32 | 893 | /* Save all temporaries on stack */ |
ba3814c1 PC |
894 | for (i = 0; i < NUM_TEMPS; i++) { |
895 | if (i + FIRST_TEMP != 1) { | |
896 | jit_stxi(offsetof(struct lightrec_state, wrapper_regs[i]), | |
897 | LIGHTREC_REG_STATE, JIT_R(i + FIRST_TEMP)); | |
898 | } | |
899 | } | |
d16005f8 | 900 | |
ba3814c1 | 901 | jit_getarg(JIT_R2, jit_arg()); |
03535202 | 902 | |
ba3814c1 PC |
903 | jit_prepare(); |
904 | jit_pushargr(LIGHTREC_REG_STATE); | |
905 | jit_pushargr(JIT_R2); | |
d16005f8 | 906 | |
ba3814c1 PC |
907 | jit_ldxi_ui(JIT_R2, LIGHTREC_REG_STATE, |
908 | offsetof(struct lightrec_state, target_cycle)); | |
d16005f8 | 909 | |
ba3814c1 PC |
910 | /* state->current_cycle = state->target_cycle - delta; */ |
911 | jit_subr(LIGHTREC_REG_CYCLE, JIT_R2, LIGHTREC_REG_CYCLE); | |
912 | jit_stxi_i(offsetof(struct lightrec_state, current_cycle), | |
913 | LIGHTREC_REG_STATE, LIGHTREC_REG_CYCLE); | |
d16005f8 | 914 | |
ba3814c1 PC |
915 | /* Call the wrapper function */ |
916 | jit_finishr(JIT_R1); | |
d16005f8 | 917 | |
ba3814c1 PC |
918 | /* delta = state->target_cycle - state->current_cycle */; |
919 | jit_ldxi_ui(LIGHTREC_REG_CYCLE, LIGHTREC_REG_STATE, | |
920 | offsetof(struct lightrec_state, current_cycle)); | |
921 | jit_ldxi_ui(JIT_R1, LIGHTREC_REG_STATE, | |
922 | offsetof(struct lightrec_state, target_cycle)); | |
923 | jit_subr(LIGHTREC_REG_CYCLE, JIT_R1, LIGHTREC_REG_CYCLE); | |
fd58fa32 | 924 | |
ba3814c1 PC |
925 | /* Restore temporaries from stack */ |
926 | for (i = 0; i < NUM_TEMPS; i++) { | |
927 | if (i + FIRST_TEMP != 1) { | |
928 | jit_ldxi(JIT_R(i + FIRST_TEMP), LIGHTREC_REG_STATE, | |
929 | offsetof(struct lightrec_state, wrapper_regs[i])); | |
930 | } | |
931 | } | |
d16005f8 | 932 | |
ba3814c1 | 933 | jit_ret(); |
d16005f8 PC |
934 | jit_epilog(); |
935 | ||
d16005f8 | 936 | block->_jit = _jit; |
d16005f8 | 937 | block->opcode_list = NULL; |
ba3814c1 | 938 | block->flags = BLOCK_NO_OPCODE_LIST; |
d16005f8 PC |
939 | block->nb_ops = 0; |
940 | ||
d8b04acd | 941 | block->function = lightrec_emit_code(state, block, _jit, |
02487de7 PC |
942 | &block->code_size); |
943 | if (!block->function) | |
944 | goto err_free_block; | |
945 | ||
fd58fa32 PC |
946 | state->wrappers_eps[C_WRAPPERS_COUNT - 1] = block->function; |
947 | ||
948 | for (i = 0; i < C_WRAPPERS_COUNT - 1; i++) | |
949 | state->wrappers_eps[i] = jit_address(addr[i]); | |
950 | ||
d16005f8 PC |
951 | if (ENABLE_DISASSEMBLER) { |
952 | pr_debug("Wrapper block:\n"); | |
953 | jit_disassemble(); | |
954 | } | |
955 | ||
956 | jit_clear_state(); | |
957 | return block; | |
958 | ||
959 | err_free_block: | |
960 | lightrec_free(state, MEM_FOR_IR, sizeof(*block), block); | |
961 | err_no_mem: | |
962 | pr_err("Unable to compile wrapper: Out of memory\n"); | |
963 | return NULL; | |
964 | } | |
965 | ||
98fa08a5 PC |
966 | static u32 lightrec_memset(struct lightrec_state *state) |
967 | { | |
968 | u32 kunseg_pc = kunseg(state->regs.gpr[4]); | |
969 | void *host; | |
970 | const struct lightrec_mem_map *map = lightrec_get_map(state, &host, kunseg_pc); | |
971 | u32 length = state->regs.gpr[5] * 4; | |
972 | ||
973 | if (!map) { | |
974 | pr_err("Unable to find memory map for memset target address " | |
975 | "0x%x\n", kunseg_pc); | |
976 | return 0; | |
977 | } | |
978 | ||
979 | pr_debug("Calling host memset, PC 0x%x (host address 0x%" PRIxPTR ") for %u bytes\n", | |
980 | kunseg_pc, (uintptr_t)host, length); | |
981 | memset(host, 0, length); | |
982 | ||
983 | if (!state->invalidate_from_dma_only) | |
984 | lightrec_invalidate_map(state, map, kunseg_pc, length); | |
985 | ||
986 | /* Rough estimation of the number of cycles consumed */ | |
987 | return 8 + 5 * (length + 3 / 4); | |
988 | } | |
989 | ||
d16005f8 PC |
990 | static struct block * generate_dispatcher(struct lightrec_state *state) |
991 | { | |
992 | struct block *block; | |
993 | jit_state_t *_jit; | |
02487de7 | 994 | jit_node_t *to_end, *loop, *addr, *addr2, *addr3; |
d16005f8 | 995 | unsigned int i; |
02487de7 | 996 | u32 offset; |
d16005f8 PC |
997 | |
998 | block = lightrec_malloc(state, MEM_FOR_IR, sizeof(*block)); | |
999 | if (!block) | |
1000 | goto err_no_mem; | |
1001 | ||
1002 | _jit = jit_new_state(); | |
1003 | if (!_jit) | |
1004 | goto err_free_block; | |
1005 | ||
1006 | jit_name("dispatcher"); | |
1007 | jit_note(__FILE__, __LINE__); | |
1008 | ||
1009 | jit_prolog(); | |
1010 | jit_frame(256); | |
1011 | ||
ba3814c1 | 1012 | jit_getarg(JIT_V1, jit_arg()); |
d16005f8 | 1013 | jit_getarg_i(LIGHTREC_REG_CYCLE, jit_arg()); |
d16005f8 PC |
1014 | |
1015 | /* Force all callee-saved registers to be pushed on the stack */ | |
1016 | for (i = 0; i < NUM_REGS; i++) | |
ba3814c1 | 1017 | jit_movr(JIT_V(i + FIRST_REG), JIT_V(i + FIRST_REG)); |
d16005f8 PC |
1018 | |
1019 | /* Pass lightrec_state structure to blocks, using the last callee-saved | |
1020 | * register that Lightning provides */ | |
1021 | jit_movi(LIGHTREC_REG_STATE, (intptr_t) state); | |
1022 | ||
1023 | loop = jit_label(); | |
1024 | ||
1025 | /* Call the block's code */ | |
ba3814c1 | 1026 | jit_jmpr(JIT_V1); |
d16005f8 | 1027 | |
98fa08a5 PC |
1028 | if (OPT_REPLACE_MEMSET) { |
1029 | /* Blocks will jump here when they need to call | |
1030 | * lightrec_memset() */ | |
1031 | addr3 = jit_indirect(); | |
1032 | ||
ba3814c1 PC |
1033 | jit_movr(JIT_V1, LIGHTREC_REG_CYCLE); |
1034 | ||
98fa08a5 PC |
1035 | jit_prepare(); |
1036 | jit_pushargr(LIGHTREC_REG_STATE); | |
1037 | jit_finishi(lightrec_memset); | |
1038 | ||
1039 | jit_ldxi_ui(JIT_V0, LIGHTREC_REG_STATE, | |
1040 | offsetof(struct lightrec_state, regs.gpr[31])); | |
1041 | ||
ba3814c1 PC |
1042 | jit_retval(LIGHTREC_REG_CYCLE); |
1043 | jit_subr(LIGHTREC_REG_CYCLE, JIT_V1, LIGHTREC_REG_CYCLE); | |
98fa08a5 PC |
1044 | } |
1045 | ||
d16005f8 PC |
1046 | /* The block will jump here, with the number of cycles remaining in |
1047 | * LIGHTREC_REG_CYCLE */ | |
1048 | addr2 = jit_indirect(); | |
1049 | ||
98fa08a5 PC |
1050 | /* Store back the next_pc to the lightrec_state structure */ |
1051 | offset = offsetof(struct lightrec_state, next_pc); | |
1052 | jit_stxi_i(offset, LIGHTREC_REG_STATE, JIT_V0); | |
1053 | ||
d16005f8 PC |
1054 | /* Jump to end if state->target_cycle < state->current_cycle */ |
1055 | to_end = jit_blei(LIGHTREC_REG_CYCLE, 0); | |
1056 | ||
1057 | /* Convert next PC to KUNSEG and avoid mirrors */ | |
ba3814c1 PC |
1058 | jit_andi(JIT_V1, JIT_V0, 0x10000000 | (RAM_SIZE - 1)); |
1059 | jit_rshi_u(JIT_R1, JIT_V1, 28); | |
02487de7 PC |
1060 | jit_andi(JIT_R2, JIT_V0, BIOS_SIZE - 1); |
1061 | jit_addi(JIT_R2, JIT_R2, RAM_SIZE); | |
ba3814c1 | 1062 | jit_movnr(JIT_V1, JIT_R2, JIT_R1); |
02487de7 PC |
1063 | |
1064 | /* If possible, use the code LUT */ | |
1065 | if (!lut_is_32bit(state)) | |
ba3814c1 PC |
1066 | jit_lshi(JIT_V1, JIT_V1, 1); |
1067 | jit_addr(JIT_V1, JIT_V1, LIGHTREC_REG_STATE); | |
02487de7 PC |
1068 | |
1069 | offset = offsetof(struct lightrec_state, code_lut); | |
1070 | if (lut_is_32bit(state)) | |
ba3814c1 | 1071 | jit_ldxi_ui(JIT_V1, JIT_V1, offset); |
02487de7 | 1072 | else |
ba3814c1 | 1073 | jit_ldxi(JIT_V1, JIT_V1, offset); |
d16005f8 PC |
1074 | |
1075 | /* If we get non-NULL, loop */ | |
ba3814c1 PC |
1076 | jit_patch_at(jit_bnei(JIT_V1, 0), loop); |
1077 | ||
1078 | /* The code LUT will be set to this address when the block at the target | |
1079 | * PC has been preprocessed but not yet compiled by the threaded | |
1080 | * recompiler */ | |
1081 | addr = jit_indirect(); | |
d16005f8 PC |
1082 | |
1083 | /* Slow path: call C function get_next_block_func() */ | |
d16005f8 | 1084 | |
98fa08a5 | 1085 | if (ENABLE_FIRST_PASS || OPT_DETECT_IMPOSSIBLE_BRANCHES) { |
d16005f8 PC |
1086 | /* We may call the interpreter - update state->current_cycle */ |
1087 | jit_ldxi_i(JIT_R2, LIGHTREC_REG_STATE, | |
1088 | offsetof(struct lightrec_state, target_cycle)); | |
ba3814c1 | 1089 | jit_subr(JIT_V1, JIT_R2, LIGHTREC_REG_CYCLE); |
d16005f8 | 1090 | jit_stxi_i(offsetof(struct lightrec_state, current_cycle), |
ba3814c1 | 1091 | LIGHTREC_REG_STATE, JIT_V1); |
d16005f8 PC |
1092 | } |
1093 | ||
d16005f8 PC |
1094 | jit_prepare(); |
1095 | jit_pushargr(LIGHTREC_REG_STATE); | |
1096 | jit_pushargr(JIT_V0); | |
ba3814c1 PC |
1097 | |
1098 | /* Save the cycles register if needed */ | |
1099 | if (!(ENABLE_FIRST_PASS || OPT_DETECT_IMPOSSIBLE_BRANCHES)) | |
1100 | jit_movr(JIT_V0, LIGHTREC_REG_CYCLE); | |
1101 | ||
1102 | /* Get the next block */ | |
d16005f8 | 1103 | jit_finishi(&get_next_block_func); |
ba3814c1 | 1104 | jit_retval(JIT_V1); |
d16005f8 | 1105 | |
98fa08a5 | 1106 | if (ENABLE_FIRST_PASS || OPT_DETECT_IMPOSSIBLE_BRANCHES) { |
d16005f8 PC |
1107 | /* The interpreter may have updated state->current_cycle and |
1108 | * state->target_cycle - recalc the delta */ | |
1109 | jit_ldxi_i(JIT_R1, LIGHTREC_REG_STATE, | |
1110 | offsetof(struct lightrec_state, current_cycle)); | |
1111 | jit_ldxi_i(JIT_R2, LIGHTREC_REG_STATE, | |
1112 | offsetof(struct lightrec_state, target_cycle)); | |
1113 | jit_subr(LIGHTREC_REG_CYCLE, JIT_R2, JIT_R1); | |
ba3814c1 PC |
1114 | } else { |
1115 | jit_movr(LIGHTREC_REG_CYCLE, JIT_V0); | |
d16005f8 PC |
1116 | } |
1117 | ||
1118 | /* If we get non-NULL, loop */ | |
ba3814c1 | 1119 | jit_patch_at(jit_bnei(JIT_V1, 0), loop); |
d16005f8 | 1120 | |
d16005f8 PC |
1121 | /* When exiting, the recompiled code will jump to that address */ |
1122 | jit_note(__FILE__, __LINE__); | |
1123 | jit_patch(to_end); | |
1124 | ||
d16005f8 PC |
1125 | jit_retr(LIGHTREC_REG_CYCLE); |
1126 | jit_epilog(); | |
1127 | ||
d16005f8 | 1128 | block->_jit = _jit; |
d16005f8 | 1129 | block->opcode_list = NULL; |
ba3814c1 | 1130 | block->flags = BLOCK_NO_OPCODE_LIST; |
d16005f8 PC |
1131 | block->nb_ops = 0; |
1132 | ||
d8b04acd | 1133 | block->function = lightrec_emit_code(state, block, _jit, |
02487de7 PC |
1134 | &block->code_size); |
1135 | if (!block->function) | |
1136 | goto err_free_block; | |
d16005f8 PC |
1137 | |
1138 | state->eob_wrapper_func = jit_address(addr2); | |
98fa08a5 PC |
1139 | if (OPT_REPLACE_MEMSET) |
1140 | state->memset_func = jit_address(addr3); | |
d16005f8 PC |
1141 | state->get_next_block = jit_address(addr); |
1142 | ||
1143 | if (ENABLE_DISASSEMBLER) { | |
1144 | pr_debug("Dispatcher block:\n"); | |
1145 | jit_disassemble(); | |
1146 | } | |
1147 | ||
1148 | /* We're done! */ | |
1149 | jit_clear_state(); | |
1150 | return block; | |
1151 | ||
1152 | err_free_block: | |
1153 | lightrec_free(state, MEM_FOR_IR, sizeof(*block), block); | |
1154 | err_no_mem: | |
1155 | pr_err("Unable to compile dispatcher: Out of memory\n"); | |
1156 | return NULL; | |
1157 | } | |
1158 | ||
1159 | union code lightrec_read_opcode(struct lightrec_state *state, u32 pc) | |
1160 | { | |
fd58fa32 | 1161 | void *host = NULL; |
d16005f8 | 1162 | |
98fa08a5 | 1163 | lightrec_get_map(state, &host, kunseg(pc)); |
d16005f8 | 1164 | |
98fa08a5 | 1165 | const u32 *code = (u32 *)host; |
02487de7 | 1166 | return (union code) LE32TOH(*code); |
98fa08a5 | 1167 | } |
d16005f8 | 1168 | |
98fa08a5 PC |
1169 | unsigned int lightrec_cycles_of_opcode(union code code) |
1170 | { | |
1171 | return 2; | |
1172 | } | |
d16005f8 | 1173 | |
ba3814c1 | 1174 | void lightrec_free_opcode_list(struct lightrec_state *state, struct opcode *ops) |
98fa08a5 | 1175 | { |
ba3814c1 PC |
1176 | struct opcode_list *list = container_of(ops, struct opcode_list, ops); |
1177 | ||
98fa08a5 | 1178 | lightrec_free(state, MEM_FOR_IR, |
ba3814c1 PC |
1179 | sizeof(*list) + list->nb_ops * sizeof(struct opcode), |
1180 | list); | |
98fa08a5 PC |
1181 | } |
1182 | ||
1183 | static unsigned int lightrec_get_mips_block_len(const u32 *src) | |
1184 | { | |
1185 | unsigned int i; | |
1186 | union code c; | |
1187 | ||
1188 | for (i = 1; ; i++) { | |
1189 | c.opcode = LE32TOH(*src++); | |
1190 | ||
1191 | if (is_syscall(c)) | |
1192 | return i; | |
1193 | ||
1194 | if (is_unconditional_jump(c)) | |
1195 | return i + 1; | |
1196 | } | |
1197 | } | |
1198 | ||
1199 | static struct opcode * lightrec_disassemble(struct lightrec_state *state, | |
1200 | const u32 *src, unsigned int *len) | |
1201 | { | |
ba3814c1 | 1202 | struct opcode_list *list; |
98fa08a5 PC |
1203 | unsigned int i, length; |
1204 | ||
1205 | length = lightrec_get_mips_block_len(src); | |
1206 | ||
ba3814c1 PC |
1207 | list = lightrec_malloc(state, MEM_FOR_IR, |
1208 | sizeof(*list) + sizeof(struct opcode) * length); | |
98fa08a5 PC |
1209 | if (!list) { |
1210 | pr_err("Unable to allocate memory\n"); | |
1211 | return NULL; | |
1212 | } | |
1213 | ||
ba3814c1 PC |
1214 | list->nb_ops = (u16) length; |
1215 | ||
98fa08a5 | 1216 | for (i = 0; i < length; i++) { |
ba3814c1 PC |
1217 | list->ops[i].opcode = LE32TOH(src[i]); |
1218 | list->ops[i].flags = 0; | |
98fa08a5 PC |
1219 | } |
1220 | ||
1221 | *len = length * sizeof(u32); | |
1222 | ||
ba3814c1 | 1223 | return list->ops; |
d16005f8 PC |
1224 | } |
1225 | ||
1226 | static struct block * lightrec_precompile_block(struct lightrec_state *state, | |
1227 | u32 pc) | |
1228 | { | |
1229 | struct opcode *list; | |
1230 | struct block *block; | |
ba3814c1 | 1231 | void *host, *addr; |
98fa08a5 PC |
1232 | const struct lightrec_mem_map *map = lightrec_get_map(state, &host, kunseg(pc)); |
1233 | const u32 *code = (u32 *) host; | |
d16005f8 | 1234 | unsigned int length; |
98fa08a5 | 1235 | bool fully_tagged; |
ba3814c1 | 1236 | u8 block_flags = 0; |
d16005f8 PC |
1237 | |
1238 | if (!map) | |
1239 | return NULL; | |
1240 | ||
d16005f8 PC |
1241 | block = lightrec_malloc(state, MEM_FOR_IR, sizeof(*block)); |
1242 | if (!block) { | |
1243 | pr_err("Unable to recompile block: Out of memory\n"); | |
1244 | return NULL; | |
1245 | } | |
1246 | ||
1247 | list = lightrec_disassemble(state, code, &length); | |
1248 | if (!list) { | |
1249 | lightrec_free(state, MEM_FOR_IR, sizeof(*block), block); | |
1250 | return NULL; | |
1251 | } | |
1252 | ||
1253 | block->pc = pc; | |
d16005f8 PC |
1254 | block->_jit = NULL; |
1255 | block->function = NULL; | |
1256 | block->opcode_list = list; | |
98fa08a5 | 1257 | block->code = code; |
d16005f8 PC |
1258 | block->next = NULL; |
1259 | block->flags = 0; | |
1260 | block->code_size = 0; | |
d8b04acd | 1261 | block->precompile_date = state->current_cycle; |
d16005f8 PC |
1262 | block->nb_ops = length / sizeof(u32); |
1263 | ||
98fa08a5 | 1264 | lightrec_optimize(state, block); |
d16005f8 PC |
1265 | |
1266 | length = block->nb_ops * sizeof(u32); | |
1267 | ||
1268 | lightrec_register(MEM_FOR_MIPS_CODE, length); | |
1269 | ||
1270 | if (ENABLE_DISASSEMBLER) { | |
98fa08a5 PC |
1271 | pr_debug("Disassembled block at PC: 0x%08x\n", block->pc); |
1272 | lightrec_print_disassembly(block, code); | |
d16005f8 PC |
1273 | } |
1274 | ||
98fa08a5 | 1275 | pr_debug("Block size: %hu opcodes\n", block->nb_ops); |
d16005f8 PC |
1276 | |
1277 | /* If the first opcode is an 'impossible' branch, never compile the | |
1278 | * block */ | |
98fa08a5 | 1279 | if (should_emulate(block->opcode_list)) |
ba3814c1 | 1280 | block_flags |= BLOCK_NEVER_COMPILE; |
d16005f8 | 1281 | |
98fa08a5 PC |
1282 | fully_tagged = lightrec_block_is_fully_tagged(block); |
1283 | if (fully_tagged) | |
ba3814c1 | 1284 | block_flags |= BLOCK_FULLY_TAGGED; |
98fa08a5 | 1285 | |
ba3814c1 PC |
1286 | if (block_flags) |
1287 | block_set_flags(block, block_flags); | |
98fa08a5 | 1288 | |
d16005f8 PC |
1289 | block->hash = lightrec_calculate_block_hash(block); |
1290 | ||
ba3814c1 PC |
1291 | if (OPT_REPLACE_MEMSET && block_has_flag(block, BLOCK_IS_MEMSET)) |
1292 | addr = state->memset_func; | |
1293 | else | |
1294 | addr = state->get_next_block; | |
1295 | lut_write(state, lut_offset(pc), addr); | |
1296 | ||
a59e5536 | 1297 | pr_debug("Recompile count: %u\n", state->nb_precompile++); |
1298 | ||
d16005f8 PC |
1299 | return block; |
1300 | } | |
1301 | ||
98fa08a5 | 1302 | static bool lightrec_block_is_fully_tagged(const struct block *block) |
d16005f8 | 1303 | { |
98fa08a5 PC |
1304 | const struct opcode *op; |
1305 | unsigned int i; | |
1306 | ||
1307 | for (i = 0; i < block->nb_ops; i++) { | |
1308 | op = &block->opcode_list[i]; | |
d16005f8 | 1309 | |
d16005f8 PC |
1310 | /* Verify that all load/stores of the opcode list |
1311 | * Check all loads/stores of the opcode list and mark the | |
1312 | * block as fully compiled if they all have been tagged. */ | |
1313 | switch (op->c.i.op) { | |
1314 | case OP_LB: | |
1315 | case OP_LH: | |
1316 | case OP_LWL: | |
1317 | case OP_LW: | |
1318 | case OP_LBU: | |
1319 | case OP_LHU: | |
1320 | case OP_LWR: | |
1321 | case OP_SB: | |
1322 | case OP_SH: | |
1323 | case OP_SWL: | |
1324 | case OP_SW: | |
1325 | case OP_SWR: | |
1326 | case OP_LWC2: | |
1327 | case OP_SWC2: | |
22eee2ac | 1328 | if (!LIGHTREC_FLAGS_GET_IO_MODE(op->flags)) |
d16005f8 | 1329 | return false; |
d8b04acd PC |
1330 | fallthrough; |
1331 | default: | |
d16005f8 PC |
1332 | continue; |
1333 | } | |
1334 | } | |
1335 | ||
1336 | return true; | |
1337 | } | |
1338 | ||
98fa08a5 | 1339 | static void lightrec_reap_block(struct lightrec_state *state, void *data) |
a59e5536 | 1340 | { |
1341 | struct block *block = data; | |
1342 | ||
1343 | pr_debug("Reap dead block at PC 0x%08x\n", block->pc); | |
98fa08a5 PC |
1344 | lightrec_unregister_block(state->block_cache, block); |
1345 | lightrec_free_block(state, block); | |
a59e5536 | 1346 | } |
1347 | ||
98fa08a5 | 1348 | static void lightrec_reap_jit(struct lightrec_state *state, void *data) |
a59e5536 | 1349 | { |
1350 | _jit_destroy_state(data); | |
1351 | } | |
1352 | ||
02487de7 PC |
1353 | static void lightrec_free_function(struct lightrec_state *state, void *fn) |
1354 | { | |
1355 | if (ENABLE_CODE_BUFFER && state->tlsf) { | |
1356 | pr_debug("Freeing code block at 0x%" PRIxPTR "\n", (uintptr_t) fn); | |
d8b04acd | 1357 | lightrec_free_code(state, fn); |
02487de7 PC |
1358 | } |
1359 | } | |
1360 | ||
1361 | static void lightrec_reap_function(struct lightrec_state *state, void *data) | |
1362 | { | |
1363 | lightrec_free_function(state, data); | |
1364 | } | |
1365 | ||
ba3814c1 PC |
1366 | static void lightrec_reap_opcode_list(struct lightrec_state *state, void *data) |
1367 | { | |
1368 | lightrec_free_opcode_list(state, data); | |
1369 | } | |
1370 | ||
98fa08a5 PC |
1371 | int lightrec_compile_block(struct lightrec_cstate *cstate, |
1372 | struct block *block) | |
d16005f8 | 1373 | { |
98fa08a5 | 1374 | struct lightrec_state *state = cstate->state; |
a59e5536 | 1375 | struct lightrec_branch_target *target; |
ba3814c1 | 1376 | bool fully_tagged = false; |
a59e5536 | 1377 | struct block *block2; |
d16005f8 | 1378 | struct opcode *elm; |
a59e5536 | 1379 | jit_state_t *_jit, *oldjit; |
d16005f8 PC |
1380 | jit_node_t *start_of_block; |
1381 | bool skip_next = false; | |
d8b04acd | 1382 | void *old_fn, *new_fn; |
ba3814c1 | 1383 | size_t old_code_size; |
d16005f8 | 1384 | unsigned int i, j; |
ba3814c1 | 1385 | u8 old_flags; |
98fa08a5 | 1386 | u32 offset; |
d16005f8 PC |
1387 | |
1388 | fully_tagged = lightrec_block_is_fully_tagged(block); | |
1389 | if (fully_tagged) | |
ba3814c1 | 1390 | block_set_flags(block, BLOCK_FULLY_TAGGED); |
d16005f8 PC |
1391 | |
1392 | _jit = jit_new_state(); | |
1393 | if (!_jit) | |
1394 | return -ENOMEM; | |
1395 | ||
a59e5536 | 1396 | oldjit = block->_jit; |
02487de7 | 1397 | old_fn = block->function; |
ba3814c1 | 1398 | old_code_size = block->code_size; |
d16005f8 PC |
1399 | block->_jit = _jit; |
1400 | ||
98fa08a5 PC |
1401 | lightrec_regcache_reset(cstate->reg_cache); |
1402 | cstate->cycles = 0; | |
98fa08a5 PC |
1403 | cstate->nb_local_branches = 0; |
1404 | cstate->nb_targets = 0; | |
d16005f8 PC |
1405 | |
1406 | jit_prolog(); | |
1407 | jit_tramp(256); | |
1408 | ||
1409 | start_of_block = jit_label(); | |
1410 | ||
98fa08a5 PC |
1411 | for (i = 0; i < block->nb_ops; i++) { |
1412 | elm = &block->opcode_list[i]; | |
d16005f8 PC |
1413 | |
1414 | if (skip_next) { | |
1415 | skip_next = false; | |
1416 | continue; | |
1417 | } | |
1418 | ||
98fa08a5 | 1419 | if (should_emulate(elm)) { |
d16005f8 | 1420 | pr_debug("Branch at offset 0x%x will be emulated\n", |
98fa08a5 PC |
1421 | i << 2); |
1422 | ||
13b02197 | 1423 | lightrec_emit_eob(cstate, block, i); |
03535202 | 1424 | skip_next = !op_flag_no_ds(elm->flags); |
98fa08a5 PC |
1425 | } else { |
1426 | lightrec_rec_opcode(cstate, block, i); | |
03535202 | 1427 | skip_next = !op_flag_no_ds(elm->flags) && has_delay_slot(elm->c); |
d16005f8 PC |
1428 | #if _WIN32 |
1429 | /* FIXME: GNU Lightning on Windows seems to use our | |
1430 | * mapped registers as temporaries. Until the actual bug | |
1431 | * is found and fixed, unconditionally mark our | |
1432 | * registers as live here. */ | |
98fa08a5 | 1433 | lightrec_regcache_mark_live(cstate->reg_cache, _jit); |
d16005f8 PC |
1434 | #endif |
1435 | } | |
03535202 PC |
1436 | |
1437 | cstate->cycles += lightrec_cycles_of_opcode(elm->c); | |
d16005f8 PC |
1438 | } |
1439 | ||
98fa08a5 PC |
1440 | for (i = 0; i < cstate->nb_local_branches; i++) { |
1441 | struct lightrec_branch *branch = &cstate->local_branches[i]; | |
d16005f8 PC |
1442 | |
1443 | pr_debug("Patch local branch to offset 0x%x\n", | |
1444 | branch->target << 2); | |
1445 | ||
1446 | if (branch->target == 0) { | |
1447 | jit_patch_at(branch->branch, start_of_block); | |
1448 | continue; | |
1449 | } | |
1450 | ||
98fa08a5 PC |
1451 | for (j = 0; j < cstate->nb_targets; j++) { |
1452 | if (cstate->targets[j].offset == branch->target) { | |
d16005f8 | 1453 | jit_patch_at(branch->branch, |
98fa08a5 | 1454 | cstate->targets[j].label); |
d16005f8 PC |
1455 | break; |
1456 | } | |
1457 | } | |
1458 | ||
98fa08a5 | 1459 | if (j == cstate->nb_targets) |
d16005f8 PC |
1460 | pr_err("Unable to find branch target\n"); |
1461 | } | |
1462 | ||
d16005f8 PC |
1463 | jit_ret(); |
1464 | jit_epilog(); | |
1465 | ||
d8b04acd PC |
1466 | new_fn = lightrec_emit_code(state, block, _jit, &block->code_size); |
1467 | if (!new_fn) { | |
1468 | if (!ENABLE_THREADED_COMPILER) | |
1469 | pr_err("Unable to compile block!\n"); | |
1470 | block->_jit = oldjit; | |
ba3814c1 | 1471 | jit_clear_state(); |
d8b04acd PC |
1472 | _jit_destroy_state(_jit); |
1473 | return -ENOMEM; | |
02487de7 PC |
1474 | } |
1475 | ||
ba3814c1 PC |
1476 | /* Pause the reaper, because lightrec_reset_lut_offset() may try to set |
1477 | * the old block->function pointer to the code LUT. */ | |
1478 | if (ENABLE_THREADED_COMPILER) | |
1479 | lightrec_reaper_pause(state->reaper); | |
1480 | ||
d8b04acd | 1481 | block->function = new_fn; |
ba3814c1 | 1482 | block_clear_flags(block, BLOCK_SHOULD_RECOMPILE); |
d16005f8 PC |
1483 | |
1484 | /* Add compiled function to the LUT */ | |
02487de7 | 1485 | lut_write(state, lut_offset(block->pc), block->function); |
d16005f8 | 1486 | |
ba3814c1 PC |
1487 | if (ENABLE_THREADED_COMPILER) |
1488 | lightrec_reaper_continue(state->reaper); | |
a59e5536 | 1489 | |
1490 | /* Detect old blocks that have been covered by the new one */ | |
98fa08a5 PC |
1491 | for (i = 0; i < cstate->nb_targets; i++) { |
1492 | target = &cstate->targets[i]; | |
a59e5536 | 1493 | |
1494 | if (!target->offset) | |
1495 | continue; | |
1496 | ||
1497 | offset = block->pc + target->offset * sizeof(u32); | |
ba3814c1 PC |
1498 | |
1499 | /* Pause the reaper while we search for the block until we set | |
1500 | * the BLOCK_IS_DEAD flag, otherwise the block may be removed | |
1501 | * under our feet. */ | |
1502 | if (ENABLE_THREADED_COMPILER) | |
1503 | lightrec_reaper_pause(state->reaper); | |
1504 | ||
a59e5536 | 1505 | block2 = lightrec_find_block(state->block_cache, offset); |
1506 | if (block2) { | |
1507 | /* No need to check if block2 is compilable - it must | |
1508 | * be, otherwise block wouldn't be compilable either */ | |
1509 | ||
98fa08a5 PC |
1510 | /* Set the "block dead" flag to prevent the dynarec from |
1511 | * recompiling this block */ | |
ba3814c1 PC |
1512 | old_flags = block_set_flags(block2, BLOCK_IS_DEAD); |
1513 | } | |
1514 | ||
1515 | if (ENABLE_THREADED_COMPILER) { | |
1516 | lightrec_reaper_continue(state->reaper); | |
a59e5536 | 1517 | |
98fa08a5 PC |
1518 | /* If block2 was pending for compilation, cancel it. |
1519 | * If it's being compiled right now, wait until it | |
1520 | * finishes. */ | |
ba3814c1 | 1521 | if (block2) |
98fa08a5 | 1522 | lightrec_recompiler_remove(state->rec, block2); |
fd58fa32 | 1523 | } |
98fa08a5 | 1524 | |
fd58fa32 PC |
1525 | /* We know from now on that block2 (if present) isn't going to |
1526 | * be compiled. We can override the LUT entry with our new | |
1527 | * block's entry point. */ | |
1528 | offset = lut_offset(block->pc) + target->offset; | |
02487de7 | 1529 | lut_write(state, offset, jit_address(target->label)); |
98fa08a5 | 1530 | |
fd58fa32 | 1531 | if (block2) { |
a59e5536 | 1532 | pr_debug("Reap block 0x%08x as it's covered by block " |
1533 | "0x%08x\n", block2->pc, block->pc); | |
1534 | ||
98fa08a5 | 1535 | /* Finally, reap the block. */ |
ba3814c1 PC |
1536 | if (!ENABLE_THREADED_COMPILER) { |
1537 | lightrec_unregister_block(state->block_cache, block2); | |
1538 | lightrec_free_block(state, block2); | |
1539 | } else if (!(old_flags & BLOCK_IS_DEAD)) { | |
a59e5536 | 1540 | lightrec_reaper_add(state->reaper, |
1541 | lightrec_reap_block, | |
1542 | block2); | |
a59e5536 | 1543 | } |
1544 | } | |
1545 | } | |
1546 | ||
d16005f8 | 1547 | if (ENABLE_DISASSEMBLER) { |
98fa08a5 | 1548 | pr_debug("Compiling block at PC: 0x%08x\n", block->pc); |
d16005f8 PC |
1549 | jit_disassemble(); |
1550 | } | |
1551 | ||
1552 | jit_clear_state(); | |
1553 | ||
d16005f8 | 1554 | if (fully_tagged) |
ba3814c1 PC |
1555 | old_flags = block_set_flags(block, BLOCK_NO_OPCODE_LIST); |
1556 | ||
1557 | if (fully_tagged && !(old_flags & BLOCK_NO_OPCODE_LIST)) { | |
d16005f8 PC |
1558 | pr_debug("Block PC 0x%08x is fully tagged" |
1559 | " - free opcode list\n", block->pc); | |
ba3814c1 PC |
1560 | |
1561 | if (ENABLE_THREADED_COMPILER) { | |
1562 | lightrec_reaper_add(state->reaper, | |
1563 | lightrec_reap_opcode_list, | |
1564 | block->opcode_list); | |
1565 | } else { | |
1566 | lightrec_free_opcode_list(state, block->opcode_list); | |
1567 | } | |
d16005f8 PC |
1568 | } |
1569 | ||
a59e5536 | 1570 | if (oldjit) { |
1571 | pr_debug("Block 0x%08x recompiled, reaping old jit context.\n", | |
1572 | block->pc); | |
1573 | ||
02487de7 | 1574 | if (ENABLE_THREADED_COMPILER) { |
a59e5536 | 1575 | lightrec_reaper_add(state->reaper, |
1576 | lightrec_reap_jit, oldjit); | |
02487de7 PC |
1577 | lightrec_reaper_add(state->reaper, |
1578 | lightrec_reap_function, old_fn); | |
1579 | } else { | |
a59e5536 | 1580 | _jit_destroy_state(oldjit); |
02487de7 PC |
1581 | lightrec_free_function(state, old_fn); |
1582 | } | |
ba3814c1 PC |
1583 | |
1584 | lightrec_unregister(MEM_FOR_CODE, old_code_size); | |
a59e5536 | 1585 | } |
1586 | ||
d16005f8 PC |
1587 | return 0; |
1588 | } | |
1589 | ||
98fa08a5 PC |
1590 | static void lightrec_print_info(struct lightrec_state *state) |
1591 | { | |
1592 | if ((state->current_cycle & ~0xfffffff) != state->old_cycle_counter) { | |
1593 | pr_info("Lightrec RAM usage: IR %u KiB, CODE %u KiB, " | |
1594 | "MIPS %u KiB, TOTAL %u KiB, avg. IPI %f\n", | |
1595 | lightrec_get_mem_usage(MEM_FOR_IR) / 1024, | |
1596 | lightrec_get_mem_usage(MEM_FOR_CODE) / 1024, | |
1597 | lightrec_get_mem_usage(MEM_FOR_MIPS_CODE) / 1024, | |
1598 | lightrec_get_total_mem_usage() / 1024, | |
1599 | lightrec_get_average_ipi()); | |
1600 | state->old_cycle_counter = state->current_cycle & ~0xfffffff; | |
1601 | } | |
1602 | } | |
1603 | ||
d16005f8 PC |
1604 | u32 lightrec_execute(struct lightrec_state *state, u32 pc, u32 target_cycle) |
1605 | { | |
1606 | s32 (*func)(void *, s32) = (void *)state->dispatcher->function; | |
1607 | void *block_trace; | |
1608 | s32 cycles_delta; | |
1609 | ||
1610 | state->exit_flags = LIGHTREC_EXIT_NORMAL; | |
1611 | ||
1612 | /* Handle the cycle counter overflowing */ | |
1613 | if (unlikely(target_cycle < state->current_cycle)) | |
1614 | target_cycle = UINT_MAX; | |
1615 | ||
1616 | state->target_cycle = target_cycle; | |
98fa08a5 | 1617 | state->next_pc = pc; |
d16005f8 PC |
1618 | |
1619 | block_trace = get_next_block_func(state, pc); | |
1620 | if (block_trace) { | |
1621 | cycles_delta = state->target_cycle - state->current_cycle; | |
1622 | ||
1623 | cycles_delta = (*func)(block_trace, cycles_delta); | |
1624 | ||
1625 | state->current_cycle = state->target_cycle - cycles_delta; | |
1626 | } | |
1627 | ||
a59e5536 | 1628 | if (ENABLE_THREADED_COMPILER) |
1629 | lightrec_reaper_reap(state->reaper); | |
1630 | ||
98fa08a5 PC |
1631 | if (LOG_LEVEL >= INFO_L) |
1632 | lightrec_print_info(state); | |
1633 | ||
d16005f8 PC |
1634 | return state->next_pc; |
1635 | } | |
1636 | ||
ba3814c1 PC |
1637 | u32 lightrec_run_interpreter(struct lightrec_state *state, u32 pc, |
1638 | u32 target_cycle) | |
d16005f8 | 1639 | { |
ba3814c1 | 1640 | struct block *block; |
d16005f8 PC |
1641 | |
1642 | state->exit_flags = LIGHTREC_EXIT_NORMAL; | |
ba3814c1 PC |
1643 | state->target_cycle = target_cycle; |
1644 | ||
1645 | do { | |
1646 | block = lightrec_get_block(state, pc); | |
1647 | if (!block) | |
1648 | break; | |
1649 | ||
1650 | pc = lightrec_emulate_block(state, block, pc); | |
d16005f8 | 1651 | |
ba3814c1 PC |
1652 | if (ENABLE_THREADED_COMPILER) |
1653 | lightrec_reaper_reap(state->reaper); | |
1654 | } while (state->current_cycle < state->target_cycle); | |
98fa08a5 PC |
1655 | |
1656 | if (LOG_LEVEL >= INFO_L) | |
1657 | lightrec_print_info(state); | |
1658 | ||
1659 | return pc; | |
d16005f8 PC |
1660 | } |
1661 | ||
98fa08a5 | 1662 | void lightrec_free_block(struct lightrec_state *state, struct block *block) |
d16005f8 | 1663 | { |
ba3814c1 PC |
1664 | u8 old_flags; |
1665 | ||
d16005f8 | 1666 | lightrec_unregister(MEM_FOR_MIPS_CODE, block->nb_ops * sizeof(u32)); |
ba3814c1 PC |
1667 | old_flags = block_set_flags(block, BLOCK_NO_OPCODE_LIST); |
1668 | ||
1669 | if (!(old_flags & BLOCK_NO_OPCODE_LIST)) | |
1670 | lightrec_free_opcode_list(state, block->opcode_list); | |
d16005f8 PC |
1671 | if (block->_jit) |
1672 | _jit_destroy_state(block->_jit); | |
d8b04acd PC |
1673 | if (block->function) { |
1674 | lightrec_free_function(state, block->function); | |
1675 | lightrec_unregister(MEM_FOR_CODE, block->code_size); | |
1676 | } | |
98fa08a5 PC |
1677 | lightrec_free(state, MEM_FOR_IR, sizeof(*block), block); |
1678 | } | |
1679 | ||
1680 | struct lightrec_cstate * lightrec_create_cstate(struct lightrec_state *state) | |
1681 | { | |
1682 | struct lightrec_cstate *cstate; | |
1683 | ||
1684 | cstate = lightrec_malloc(state, MEM_FOR_LIGHTREC, sizeof(*cstate)); | |
1685 | if (!cstate) | |
1686 | return NULL; | |
1687 | ||
1688 | cstate->reg_cache = lightrec_regcache_init(state); | |
1689 | if (!cstate->reg_cache) { | |
1690 | lightrec_free(state, MEM_FOR_LIGHTREC, sizeof(*cstate), cstate); | |
1691 | return NULL; | |
1692 | } | |
1693 | ||
1694 | cstate->state = state; | |
1695 | ||
1696 | return cstate; | |
1697 | } | |
1698 | ||
1699 | void lightrec_free_cstate(struct lightrec_cstate *cstate) | |
1700 | { | |
1701 | lightrec_free_regcache(cstate->reg_cache); | |
1702 | lightrec_free(cstate->state, MEM_FOR_LIGHTREC, sizeof(*cstate), cstate); | |
d16005f8 PC |
1703 | } |
1704 | ||
1705 | struct lightrec_state * lightrec_init(char *argv0, | |
1706 | const struct lightrec_mem_map *map, | |
1707 | size_t nb, | |
1708 | const struct lightrec_ops *ops) | |
1709 | { | |
d8b04acd | 1710 | const struct lightrec_mem_map *codebuf_map = &map[PSX_MAP_CODE_BUFFER]; |
d16005f8 | 1711 | struct lightrec_state *state; |
02487de7 PC |
1712 | uintptr_t addr; |
1713 | void *tlsf = NULL; | |
1714 | bool with_32bit_lut = false; | |
1715 | size_t lut_size; | |
d16005f8 PC |
1716 | |
1717 | /* Sanity-check ops */ | |
98fa08a5 | 1718 | if (!ops || !ops->cop2_op || !ops->enable_ram) { |
d16005f8 PC |
1719 | pr_err("Missing callbacks in lightrec_ops structure\n"); |
1720 | return NULL; | |
1721 | } | |
1722 | ||
fdf33147 PC |
1723 | if (ops->cop2_notify) |
1724 | pr_debug("Optional cop2_notify callback in lightrec_ops\n"); | |
1725 | else | |
1726 | pr_debug("No optional cop2_notify callback in lightrec_ops\n"); | |
1727 | ||
d8b04acd PC |
1728 | if (ENABLE_CODE_BUFFER && nb > PSX_MAP_CODE_BUFFER |
1729 | && codebuf_map->address) { | |
02487de7 PC |
1730 | tlsf = tlsf_create_with_pool(codebuf_map->address, |
1731 | codebuf_map->length); | |
1732 | if (!tlsf) { | |
1733 | pr_err("Unable to initialize code buffer\n"); | |
1734 | return NULL; | |
1735 | } | |
1736 | ||
1737 | if (__WORDSIZE == 64) { | |
1738 | addr = (uintptr_t) codebuf_map->address + codebuf_map->length - 1; | |
1739 | with_32bit_lut = addr == (u32) addr; | |
1740 | } | |
1741 | } | |
1742 | ||
1743 | if (with_32bit_lut) | |
1744 | lut_size = CODE_LUT_SIZE * 4; | |
1745 | else | |
1746 | lut_size = CODE_LUT_SIZE * sizeof(void *); | |
1747 | ||
d16005f8 PC |
1748 | init_jit(argv0); |
1749 | ||
02487de7 | 1750 | state = calloc(1, sizeof(*state) + lut_size); |
d16005f8 PC |
1751 | if (!state) |
1752 | goto err_finish_jit; | |
1753 | ||
02487de7 PC |
1754 | lightrec_register(MEM_FOR_LIGHTREC, sizeof(*state) + lut_size); |
1755 | ||
1756 | state->tlsf = tlsf; | |
1757 | state->with_32bit_lut = with_32bit_lut; | |
d16005f8 | 1758 | |
d16005f8 PC |
1759 | state->block_cache = lightrec_blockcache_init(state); |
1760 | if (!state->block_cache) | |
d8b04acd | 1761 | goto err_free_state; |
d16005f8 | 1762 | |
d16005f8 PC |
1763 | if (ENABLE_THREADED_COMPILER) { |
1764 | state->rec = lightrec_recompiler_init(state); | |
1765 | if (!state->rec) | |
98fa08a5 | 1766 | goto err_free_block_cache; |
a59e5536 | 1767 | |
1768 | state->reaper = lightrec_reaper_init(state); | |
1769 | if (!state->reaper) | |
1770 | goto err_free_recompiler; | |
98fa08a5 PC |
1771 | } else { |
1772 | state->cstate = lightrec_create_cstate(state); | |
1773 | if (!state->cstate) | |
1774 | goto err_free_block_cache; | |
d16005f8 PC |
1775 | } |
1776 | ||
1777 | state->nb_maps = nb; | |
1778 | state->maps = map; | |
1779 | ||
1780 | memcpy(&state->ops, ops, sizeof(*ops)); | |
1781 | ||
1782 | state->dispatcher = generate_dispatcher(state); | |
1783 | if (!state->dispatcher) | |
a59e5536 | 1784 | goto err_free_reaper; |
d16005f8 | 1785 | |
98fa08a5 PC |
1786 | state->c_wrapper_block = generate_wrapper(state); |
1787 | if (!state->c_wrapper_block) | |
d16005f8 PC |
1788 | goto err_free_dispatcher; |
1789 | ||
98fa08a5 PC |
1790 | state->c_wrappers[C_WRAPPER_RW] = lightrec_rw_cb; |
1791 | state->c_wrappers[C_WRAPPER_RW_GENERIC] = lightrec_rw_generic_cb; | |
fdf33147 | 1792 | state->c_wrappers[C_WRAPPER_MFC] = lightrec_mfc_cb; |
98fa08a5 | 1793 | state->c_wrappers[C_WRAPPER_MTC] = lightrec_mtc_cb; |
22eee2ac | 1794 | state->c_wrappers[C_WRAPPER_CP] = lightrec_cp_cb; |
d16005f8 PC |
1795 | |
1796 | map = &state->maps[PSX_MAP_BIOS]; | |
1797 | state->offset_bios = (uintptr_t)map->address - map->pc; | |
1798 | ||
1799 | map = &state->maps[PSX_MAP_SCRATCH_PAD]; | |
1800 | state->offset_scratch = (uintptr_t)map->address - map->pc; | |
1801 | ||
ba3814c1 PC |
1802 | map = &state->maps[PSX_MAP_HW_REGISTERS]; |
1803 | state->offset_io = (uintptr_t)map->address - map->pc; | |
1804 | ||
d16005f8 PC |
1805 | map = &state->maps[PSX_MAP_KERNEL_USER_RAM]; |
1806 | state->offset_ram = (uintptr_t)map->address - map->pc; | |
1807 | ||
1808 | if (state->maps[PSX_MAP_MIRROR1].address == map->address + 0x200000 && | |
1809 | state->maps[PSX_MAP_MIRROR2].address == map->address + 0x400000 && | |
1810 | state->maps[PSX_MAP_MIRROR3].address == map->address + 0x600000) | |
1811 | state->mirrors_mapped = true; | |
1812 | ||
98fa08a5 PC |
1813 | if (state->offset_bios == 0 && |
1814 | state->offset_scratch == 0 && | |
1815 | state->offset_ram == 0 && | |
ba3814c1 | 1816 | state->offset_io == 0 && |
98fa08a5 PC |
1817 | state->mirrors_mapped) { |
1818 | pr_info("Memory map is perfect. Emitted code will be best.\n"); | |
1819 | } else { | |
1820 | pr_info("Memory map is sub-par. Emitted code will be slow.\n"); | |
1821 | } | |
1822 | ||
02487de7 PC |
1823 | if (state->with_32bit_lut) |
1824 | pr_info("Using 32-bit LUT\n"); | |
1825 | ||
d16005f8 PC |
1826 | return state; |
1827 | ||
d16005f8 | 1828 | err_free_dispatcher: |
98fa08a5 | 1829 | lightrec_free_block(state, state->dispatcher); |
a59e5536 | 1830 | err_free_reaper: |
1831 | if (ENABLE_THREADED_COMPILER) | |
1832 | lightrec_reaper_destroy(state->reaper); | |
d16005f8 PC |
1833 | err_free_recompiler: |
1834 | if (ENABLE_THREADED_COMPILER) | |
1835 | lightrec_free_recompiler(state->rec); | |
98fa08a5 PC |
1836 | else |
1837 | lightrec_free_cstate(state->cstate); | |
d16005f8 PC |
1838 | err_free_block_cache: |
1839 | lightrec_free_block_cache(state->block_cache); | |
d16005f8 | 1840 | err_free_state: |
d16005f8 | 1841 | lightrec_unregister(MEM_FOR_LIGHTREC, sizeof(*state) + |
02487de7 | 1842 | lut_elm_size(state) * CODE_LUT_SIZE); |
d16005f8 PC |
1843 | free(state); |
1844 | err_finish_jit: | |
1845 | finish_jit(); | |
02487de7 PC |
1846 | if (ENABLE_CODE_BUFFER && tlsf) |
1847 | tlsf_destroy(tlsf); | |
d16005f8 PC |
1848 | return NULL; |
1849 | } | |
1850 | ||
1851 | void lightrec_destroy(struct lightrec_state *state) | |
1852 | { | |
98fa08a5 PC |
1853 | /* Force a print info on destroy*/ |
1854 | state->current_cycle = ~state->current_cycle; | |
1855 | lightrec_print_info(state); | |
1856 | ||
03535202 PC |
1857 | lightrec_free_block_cache(state->block_cache); |
1858 | lightrec_free_block(state, state->dispatcher); | |
1859 | lightrec_free_block(state, state->c_wrapper_block); | |
1860 | ||
a59e5536 | 1861 | if (ENABLE_THREADED_COMPILER) { |
d16005f8 | 1862 | lightrec_free_recompiler(state->rec); |
a59e5536 | 1863 | lightrec_reaper_destroy(state->reaper); |
98fa08a5 PC |
1864 | } else { |
1865 | lightrec_free_cstate(state->cstate); | |
a59e5536 | 1866 | } |
d16005f8 | 1867 | |
d16005f8 | 1868 | finish_jit(); |
02487de7 PC |
1869 | if (ENABLE_CODE_BUFFER && state->tlsf) |
1870 | tlsf_destroy(state->tlsf); | |
d16005f8 | 1871 | |
d16005f8 | 1872 | lightrec_unregister(MEM_FOR_LIGHTREC, sizeof(*state) + |
02487de7 | 1873 | lut_elm_size(state) * CODE_LUT_SIZE); |
d16005f8 PC |
1874 | free(state); |
1875 | } | |
1876 | ||
1877 | void lightrec_invalidate(struct lightrec_state *state, u32 addr, u32 len) | |
1878 | { | |
1879 | u32 kaddr = kunseg(addr & ~0x3); | |
d8b04acd | 1880 | enum psx_map idx = lightrec_get_map_idx(state, kaddr); |
d16005f8 | 1881 | |
d8b04acd PC |
1882 | switch (idx) { |
1883 | case PSX_MAP_MIRROR1: | |
1884 | case PSX_MAP_MIRROR2: | |
1885 | case PSX_MAP_MIRROR3: | |
d16005f8 | 1886 | /* Handle mirrors */ |
d8b04acd PC |
1887 | kaddr &= RAM_SIZE - 1; |
1888 | fallthrough; | |
1889 | case PSX_MAP_KERNEL_USER_RAM: | |
1890 | break; | |
1891 | default: | |
1892 | return; | |
d16005f8 | 1893 | } |
d8b04acd PC |
1894 | |
1895 | memset(lut_address(state, lut_offset(kaddr)), 0, | |
1896 | ((len + 3) / 4) * lut_elm_size(state)); | |
d16005f8 PC |
1897 | } |
1898 | ||
1899 | void lightrec_invalidate_all(struct lightrec_state *state) | |
1900 | { | |
02487de7 | 1901 | memset(state->code_lut, 0, lut_elm_size(state) * CODE_LUT_SIZE); |
d16005f8 PC |
1902 | } |
1903 | ||
1904 | void lightrec_set_invalidate_mode(struct lightrec_state *state, bool dma_only) | |
1905 | { | |
1906 | if (state->invalidate_from_dma_only != dma_only) | |
1907 | lightrec_invalidate_all(state); | |
1908 | ||
1909 | state->invalidate_from_dma_only = dma_only; | |
1910 | } | |
1911 | ||
1912 | void lightrec_set_exit_flags(struct lightrec_state *state, u32 flags) | |
1913 | { | |
1914 | if (flags != LIGHTREC_EXIT_NORMAL) { | |
1915 | state->exit_flags |= flags; | |
1916 | state->target_cycle = state->current_cycle; | |
1917 | } | |
1918 | } | |
1919 | ||
1920 | u32 lightrec_exit_flags(struct lightrec_state *state) | |
1921 | { | |
1922 | return state->exit_flags; | |
1923 | } | |
1924 | ||
d16005f8 PC |
1925 | u32 lightrec_current_cycle_count(const struct lightrec_state *state) |
1926 | { | |
1927 | return state->current_cycle; | |
1928 | } | |
1929 | ||
1930 | void lightrec_reset_cycle_count(struct lightrec_state *state, u32 cycles) | |
1931 | { | |
1932 | state->current_cycle = cycles; | |
1933 | ||
1934 | if (state->target_cycle < cycles) | |
1935 | state->target_cycle = cycles; | |
1936 | } | |
1937 | ||
1938 | void lightrec_set_target_cycle_count(struct lightrec_state *state, u32 cycles) | |
1939 | { | |
1940 | if (state->exit_flags == LIGHTREC_EXIT_NORMAL) { | |
1941 | if (cycles < state->current_cycle) | |
1942 | cycles = state->current_cycle; | |
1943 | ||
1944 | state->target_cycle = cycles; | |
1945 | } | |
1946 | } | |
98fa08a5 PC |
1947 | |
1948 | struct lightrec_registers * lightrec_get_registers(struct lightrec_state *state) | |
1949 | { | |
1950 | return &state->regs; | |
1951 | } |