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98fa08a5 | 1 | // SPDX-License-Identifier: LGPL-2.1-or-later |
d16005f8 | 2 | /* |
98fa08a5 | 3 | * Copyright (C) 2014-2021 Paul Cercueil <paul@crapouillou.net> |
d16005f8 PC |
4 | */ |
5 | ||
6 | #include "blockcache.h" | |
d16005f8 PC |
7 | #include "debug.h" |
8 | #include "disassembler.h" | |
9 | #include "emitter.h" | |
10 | #include "interpreter.h" | |
98fa08a5 PC |
11 | #include "lightrec-config.h" |
12 | #include "lightning-wrapper.h" | |
d16005f8 PC |
13 | #include "lightrec.h" |
14 | #include "memmanager.h" | |
a59e5536 | 15 | #include "reaper.h" |
d16005f8 PC |
16 | #include "recompiler.h" |
17 | #include "regcache.h" | |
18 | #include "optimizer.h" | |
02487de7 | 19 | #include "tlsf/tlsf.h" |
d16005f8 PC |
20 | |
21 | #include <errno.h> | |
98fa08a5 | 22 | #include <inttypes.h> |
d16005f8 PC |
23 | #include <limits.h> |
24 | #if ENABLE_THREADED_COMPILER | |
25 | #include <stdatomic.h> | |
26 | #endif | |
27 | #include <stdbool.h> | |
28 | #include <stddef.h> | |
29 | #include <string.h> | |
d16005f8 PC |
30 | |
31 | #define GENMASK(h, l) \ | |
32 | (((uintptr_t)-1 << (l)) & ((uintptr_t)-1 >> (__WORDSIZE - 1 - (h)))) | |
33 | ||
34 | static struct block * lightrec_precompile_block(struct lightrec_state *state, | |
35 | u32 pc); | |
98fa08a5 PC |
36 | static bool lightrec_block_is_fully_tagged(const struct block *block); |
37 | ||
38 | static void lightrec_mtc2(struct lightrec_state *state, u8 reg, u32 data); | |
39 | static u32 lightrec_mfc2(struct lightrec_state *state, u8 reg); | |
d16005f8 | 40 | |
a59e5536 | 41 | static void lightrec_default_sb(struct lightrec_state *state, u32 opcode, |
42 | void *host, u32 addr, u8 data) | |
43 | { | |
44 | *(u8 *)host = data; | |
45 | ||
46 | if (!state->invalidate_from_dma_only) | |
47 | lightrec_invalidate(state, addr, 1); | |
48 | } | |
49 | ||
50 | static void lightrec_default_sh(struct lightrec_state *state, u32 opcode, | |
51 | void *host, u32 addr, u16 data) | |
52 | { | |
53 | *(u16 *)host = HTOLE16(data); | |
54 | ||
55 | if (!state->invalidate_from_dma_only) | |
56 | lightrec_invalidate(state, addr, 2); | |
57 | } | |
58 | ||
59 | static void lightrec_default_sw(struct lightrec_state *state, u32 opcode, | |
60 | void *host, u32 addr, u32 data) | |
61 | { | |
62 | *(u32 *)host = HTOLE32(data); | |
63 | ||
64 | if (!state->invalidate_from_dma_only) | |
65 | lightrec_invalidate(state, addr, 4); | |
66 | } | |
67 | ||
68 | static u8 lightrec_default_lb(struct lightrec_state *state, | |
69 | u32 opcode, void *host, u32 addr) | |
70 | { | |
71 | return *(u8 *)host; | |
72 | } | |
73 | ||
74 | static u16 lightrec_default_lh(struct lightrec_state *state, | |
75 | u32 opcode, void *host, u32 addr) | |
76 | { | |
77 | return LE16TOH(*(u16 *)host); | |
78 | } | |
79 | ||
80 | static u32 lightrec_default_lw(struct lightrec_state *state, | |
81 | u32 opcode, void *host, u32 addr) | |
82 | { | |
83 | return LE32TOH(*(u32 *)host); | |
84 | } | |
85 | ||
86 | static const struct lightrec_mem_map_ops lightrec_default_ops = { | |
87 | .sb = lightrec_default_sb, | |
88 | .sh = lightrec_default_sh, | |
89 | .sw = lightrec_default_sw, | |
90 | .lb = lightrec_default_lb, | |
91 | .lh = lightrec_default_lh, | |
92 | .lw = lightrec_default_lw, | |
93 | }; | |
94 | ||
98fa08a5 PC |
95 | static void __segfault_cb(struct lightrec_state *state, u32 addr, |
96 | const struct block *block) | |
d16005f8 PC |
97 | { |
98 | lightrec_set_exit_flags(state, LIGHTREC_EXIT_SEGFAULT); | |
99 | pr_err("Segmentation fault in recompiled code: invalid " | |
100 | "load/store at address 0x%08x\n", addr); | |
98fa08a5 PC |
101 | if (block) |
102 | pr_err("Was executing block PC 0x%08x\n", block->pc); | |
d16005f8 PC |
103 | } |
104 | ||
a59e5536 | 105 | static void lightrec_swl(struct lightrec_state *state, |
106 | const struct lightrec_mem_map_ops *ops, | |
107 | u32 opcode, void *host, u32 addr, u32 data) | |
d16005f8 | 108 | { |
a59e5536 | 109 | unsigned int shift = addr & 0x3; |
110 | unsigned int mask = GENMASK(31, (shift + 1) * 8); | |
111 | u32 old_data; | |
112 | ||
113 | /* Align to 32 bits */ | |
114 | addr &= ~3; | |
115 | host = (void *)((uintptr_t)host & ~3); | |
116 | ||
117 | old_data = ops->lw(state, opcode, host, addr); | |
118 | ||
119 | data = (data >> ((3 - shift) * 8)) | (old_data & mask); | |
120 | ||
121 | ops->sw(state, opcode, host, addr, data); | |
122 | } | |
123 | ||
124 | static void lightrec_swr(struct lightrec_state *state, | |
125 | const struct lightrec_mem_map_ops *ops, | |
126 | u32 opcode, void *host, u32 addr, u32 data) | |
127 | { | |
128 | unsigned int shift = addr & 0x3; | |
129 | unsigned int mask = (1 << (shift * 8)) - 1; | |
130 | u32 old_data; | |
131 | ||
132 | /* Align to 32 bits */ | |
133 | addr &= ~3; | |
134 | host = (void *)((uintptr_t)host & ~3); | |
135 | ||
136 | old_data = ops->lw(state, opcode, host, addr); | |
137 | ||
138 | data = (data << (shift * 8)) | (old_data & mask); | |
139 | ||
140 | ops->sw(state, opcode, host, addr, data); | |
141 | } | |
142 | ||
143 | static void lightrec_swc2(struct lightrec_state *state, union code op, | |
144 | const struct lightrec_mem_map_ops *ops, | |
145 | void *host, u32 addr) | |
146 | { | |
98fa08a5 | 147 | u32 data = lightrec_mfc2(state, op.i.rt); |
a59e5536 | 148 | |
149 | ops->sw(state, op.opcode, host, addr, data); | |
150 | } | |
151 | ||
152 | static u32 lightrec_lwl(struct lightrec_state *state, | |
153 | const struct lightrec_mem_map_ops *ops, | |
154 | u32 opcode, void *host, u32 addr, u32 data) | |
155 | { | |
156 | unsigned int shift = addr & 0x3; | |
157 | unsigned int mask = (1 << (24 - shift * 8)) - 1; | |
158 | u32 old_data; | |
159 | ||
160 | /* Align to 32 bits */ | |
161 | addr &= ~3; | |
162 | host = (void *)((uintptr_t)host & ~3); | |
163 | ||
164 | old_data = ops->lw(state, opcode, host, addr); | |
165 | ||
166 | return (data & mask) | (old_data << (24 - shift * 8)); | |
167 | } | |
168 | ||
169 | static u32 lightrec_lwr(struct lightrec_state *state, | |
170 | const struct lightrec_mem_map_ops *ops, | |
171 | u32 opcode, void *host, u32 addr, u32 data) | |
172 | { | |
173 | unsigned int shift = addr & 0x3; | |
174 | unsigned int mask = GENMASK(31, 32 - shift * 8); | |
175 | u32 old_data; | |
176 | ||
177 | /* Align to 32 bits */ | |
178 | addr &= ~3; | |
179 | host = (void *)((uintptr_t)host & ~3); | |
180 | ||
181 | old_data = ops->lw(state, opcode, host, addr); | |
182 | ||
183 | return (data & mask) | (old_data >> (shift * 8)); | |
184 | } | |
185 | ||
186 | static void lightrec_lwc2(struct lightrec_state *state, union code op, | |
187 | const struct lightrec_mem_map_ops *ops, | |
188 | void *host, u32 addr) | |
189 | { | |
190 | u32 data = ops->lw(state, op.opcode, host, addr); | |
191 | ||
98fa08a5 | 192 | lightrec_mtc2(state, op.i.rt, data); |
d16005f8 PC |
193 | } |
194 | ||
195 | static void lightrec_invalidate_map(struct lightrec_state *state, | |
98fa08a5 | 196 | const struct lightrec_mem_map *map, u32 addr, u32 len) |
d16005f8 | 197 | { |
98fa08a5 | 198 | if (map == &state->maps[PSX_MAP_KERNEL_USER_RAM]) { |
02487de7 PC |
199 | memset(lut_address(state, lut_offset(addr)), 0, |
200 | ((len + 3) / 4) * lut_elm_size(state)); | |
98fa08a5 | 201 | } |
d16005f8 PC |
202 | } |
203 | ||
02487de7 PC |
204 | enum psx_map |
205 | lightrec_get_map_idx(struct lightrec_state *state, u32 kaddr) | |
d16005f8 | 206 | { |
98fa08a5 | 207 | const struct lightrec_mem_map *map; |
d16005f8 PC |
208 | unsigned int i; |
209 | ||
210 | for (i = 0; i < state->nb_maps; i++) { | |
02487de7 | 211 | map = &state->maps[i]; |
d16005f8 | 212 | |
02487de7 PC |
213 | if (kaddr >= map->pc && kaddr < map->pc + map->length) |
214 | return (enum psx_map) i; | |
d16005f8 PC |
215 | } |
216 | ||
02487de7 PC |
217 | return PSX_MAP_UNKNOWN; |
218 | } | |
219 | ||
220 | const struct lightrec_mem_map * | |
221 | lightrec_get_map(struct lightrec_state *state, void **host, u32 kaddr) | |
222 | { | |
223 | const struct lightrec_mem_map *map; | |
224 | enum psx_map idx; | |
225 | u32 addr; | |
226 | ||
227 | idx = lightrec_get_map_idx(state, kaddr); | |
228 | if (idx == PSX_MAP_UNKNOWN) | |
98fa08a5 PC |
229 | return NULL; |
230 | ||
02487de7 | 231 | map = &state->maps[idx]; |
98fa08a5 PC |
232 | addr = kaddr - map->pc; |
233 | ||
234 | while (map->mirror_of) | |
235 | map = map->mirror_of; | |
236 | ||
237 | if (host) | |
238 | *host = map->address + addr; | |
239 | ||
240 | return map; | |
d16005f8 PC |
241 | } |
242 | ||
243 | u32 lightrec_rw(struct lightrec_state *state, union code op, | |
98fa08a5 | 244 | u32 addr, u32 data, u16 *flags, struct block *block) |
d16005f8 PC |
245 | { |
246 | const struct lightrec_mem_map *map; | |
a59e5536 | 247 | const struct lightrec_mem_map_ops *ops; |
98fa08a5 | 248 | u32 opcode = op.opcode; |
a59e5536 | 249 | void *host; |
d16005f8 PC |
250 | |
251 | addr += (s16) op.i.imm; | |
d16005f8 | 252 | |
98fa08a5 | 253 | map = lightrec_get_map(state, &host, kunseg(addr)); |
d16005f8 | 254 | if (!map) { |
98fa08a5 | 255 | __segfault_cb(state, addr, block); |
d16005f8 PC |
256 | return 0; |
257 | } | |
258 | ||
d16005f8 | 259 | if (unlikely(map->ops)) { |
22eee2ac PC |
260 | if (flags && !LIGHTREC_FLAGS_GET_IO_MODE(*flags)) |
261 | *flags |= LIGHTREC_IO_MODE(LIGHTREC_IO_HW); | |
d16005f8 | 262 | |
a59e5536 | 263 | ops = map->ops; |
264 | } else { | |
22eee2ac PC |
265 | if (flags && !LIGHTREC_FLAGS_GET_IO_MODE(*flags)) |
266 | *flags |= LIGHTREC_IO_MODE(LIGHTREC_IO_DIRECT); | |
d16005f8 | 267 | |
a59e5536 | 268 | ops = &lightrec_default_ops; |
269 | } | |
d16005f8 PC |
270 | |
271 | switch (op.i.op) { | |
272 | case OP_SB: | |
a59e5536 | 273 | ops->sb(state, opcode, host, addr, (u8) data); |
d16005f8 PC |
274 | return 0; |
275 | case OP_SH: | |
a59e5536 | 276 | ops->sh(state, opcode, host, addr, (u16) data); |
d16005f8 PC |
277 | return 0; |
278 | case OP_SWL: | |
a59e5536 | 279 | lightrec_swl(state, ops, opcode, host, addr, data); |
d16005f8 PC |
280 | return 0; |
281 | case OP_SWR: | |
a59e5536 | 282 | lightrec_swr(state, ops, opcode, host, addr, data); |
d16005f8 PC |
283 | return 0; |
284 | case OP_SW: | |
a59e5536 | 285 | ops->sw(state, opcode, host, addr, data); |
d16005f8 PC |
286 | return 0; |
287 | case OP_SWC2: | |
a59e5536 | 288 | lightrec_swc2(state, op, ops, host, addr); |
d16005f8 PC |
289 | return 0; |
290 | case OP_LB: | |
a59e5536 | 291 | return (s32) (s8) ops->lb(state, opcode, host, addr); |
d16005f8 | 292 | case OP_LBU: |
a59e5536 | 293 | return ops->lb(state, opcode, host, addr); |
d16005f8 | 294 | case OP_LH: |
a59e5536 | 295 | return (s32) (s16) ops->lh(state, opcode, host, addr); |
d16005f8 | 296 | case OP_LHU: |
a59e5536 | 297 | return ops->lh(state, opcode, host, addr); |
d16005f8 | 298 | case OP_LWC2: |
a59e5536 | 299 | lightrec_lwc2(state, op, ops, host, addr); |
d16005f8 | 300 | return 0; |
a59e5536 | 301 | case OP_LWL: |
302 | return lightrec_lwl(state, ops, opcode, host, addr, data); | |
303 | case OP_LWR: | |
304 | return lightrec_lwr(state, ops, opcode, host, addr, data); | |
d16005f8 PC |
305 | case OP_LW: |
306 | default: | |
a59e5536 | 307 | return ops->lw(state, opcode, host, addr); |
d16005f8 PC |
308 | } |
309 | } | |
310 | ||
311 | static void lightrec_rw_helper(struct lightrec_state *state, | |
98fa08a5 PC |
312 | union code op, u16 *flags, |
313 | struct block *block) | |
d16005f8 | 314 | { |
98fa08a5 PC |
315 | u32 ret = lightrec_rw(state, op, state->regs.gpr[op.i.rs], |
316 | state->regs.gpr[op.i.rt], flags, block); | |
d16005f8 PC |
317 | |
318 | switch (op.i.op) { | |
319 | case OP_LB: | |
320 | case OP_LBU: | |
321 | case OP_LH: | |
322 | case OP_LHU: | |
323 | case OP_LWL: | |
324 | case OP_LWR: | |
325 | case OP_LW: | |
326 | if (op.i.rt) | |
98fa08a5 | 327 | state->regs.gpr[op.i.rt] = ret; |
d8b04acd PC |
328 | fallthrough; |
329 | default: | |
d16005f8 PC |
330 | break; |
331 | } | |
332 | } | |
333 | ||
22eee2ac | 334 | static void lightrec_rw_cb(struct lightrec_state *state) |
d16005f8 | 335 | { |
22eee2ac | 336 | lightrec_rw_helper(state, (union code)state->c_wrapper_arg, NULL, NULL); |
d16005f8 PC |
337 | } |
338 | ||
22eee2ac | 339 | static void lightrec_rw_generic_cb(struct lightrec_state *state) |
d16005f8 | 340 | { |
98fa08a5 PC |
341 | struct block *block; |
342 | struct opcode *op; | |
343 | bool was_tagged; | |
22eee2ac | 344 | u32 arg = state->c_wrapper_arg; |
98fa08a5 PC |
345 | u16 offset = (u16)arg; |
346 | ||
347 | block = lightrec_find_block_from_lut(state->block_cache, | |
348 | arg >> 16, state->next_pc); | |
349 | if (unlikely(!block)) { | |
350 | pr_err("rw_generic: No block found in LUT for PC 0x%x offset 0x%x\n", | |
351 | state->next_pc, offset); | |
352 | return; | |
353 | } | |
354 | ||
355 | op = &block->opcode_list[offset]; | |
22eee2ac | 356 | was_tagged = LIGHTREC_FLAGS_GET_IO_MODE(op->flags); |
d16005f8 | 357 | |
98fa08a5 | 358 | lightrec_rw_helper(state, op->c, &op->flags, block); |
d16005f8 PC |
359 | |
360 | if (!was_tagged) { | |
98fa08a5 PC |
361 | pr_debug("Opcode of block at PC 0x%08x has been tagged - flag " |
362 | "for recompilation\n", block->pc); | |
d16005f8 | 363 | |
a59e5536 | 364 | block->flags |= BLOCK_SHOULD_RECOMPILE; |
d16005f8 PC |
365 | } |
366 | } | |
367 | ||
98fa08a5 | 368 | static u32 clamp_s32(s32 val, s32 min, s32 max) |
d16005f8 | 369 | { |
98fa08a5 PC |
370 | return val < min ? min : val > max ? max : val; |
371 | } | |
d16005f8 | 372 | |
98fa08a5 PC |
373 | static u32 lightrec_mfc2(struct lightrec_state *state, u8 reg) |
374 | { | |
375 | s16 gteir1, gteir2, gteir3; | |
376 | ||
377 | switch (reg) { | |
378 | case 1: | |
379 | case 3: | |
380 | case 5: | |
381 | case 8: | |
382 | case 9: | |
383 | case 10: | |
384 | case 11: | |
385 | return (s32)(s16) state->regs.cp2d[reg]; | |
386 | case 7: | |
387 | case 16: | |
388 | case 17: | |
389 | case 18: | |
390 | case 19: | |
391 | return (u16) state->regs.cp2d[reg]; | |
392 | case 28: | |
393 | case 29: | |
394 | gteir1 = (s16) state->regs.cp2d[9]; | |
395 | gteir2 = (s16) state->regs.cp2d[10]; | |
396 | gteir3 = (s16) state->regs.cp2d[11]; | |
397 | ||
398 | return clamp_s32(gteir1 >> 7, 0, 0x1f) << 0 | | |
399 | clamp_s32(gteir2 >> 7, 0, 0x1f) << 5 | | |
400 | clamp_s32(gteir3 >> 7, 0, 0x1f) << 10; | |
401 | case 15: | |
402 | reg = 14; | |
d8b04acd PC |
403 | fallthrough; |
404 | default: | |
98fa08a5 PC |
405 | return state->regs.cp2d[reg]; |
406 | } | |
407 | } | |
d16005f8 | 408 | |
98fa08a5 PC |
409 | u32 lightrec_mfc(struct lightrec_state *state, union code op) |
410 | { | |
411 | if (op.i.op == OP_CP0) | |
412 | return state->regs.cp0[op.r.rd]; | |
413 | else if (op.r.rs == OP_CP2_BASIC_MFC2) | |
414 | return lightrec_mfc2(state, op.r.rd); | |
d16005f8 | 415 | else |
98fa08a5 | 416 | return state->regs.cp2c[op.r.rd]; |
d16005f8 PC |
417 | } |
418 | ||
98fa08a5 | 419 | static void lightrec_mtc0(struct lightrec_state *state, u8 reg, u32 data) |
d16005f8 | 420 | { |
fd58fa32 | 421 | u32 status, oldstatus, cause; |
98fa08a5 PC |
422 | |
423 | switch (reg) { | |
424 | case 1: | |
425 | case 4: | |
426 | case 8: | |
427 | case 14: | |
428 | case 15: | |
429 | /* Those registers are read-only */ | |
430 | return; | |
fd58fa32 | 431 | default: |
98fa08a5 PC |
432 | break; |
433 | } | |
d16005f8 | 434 | |
98fa08a5 PC |
435 | if (reg == 12) { |
436 | status = state->regs.cp0[12]; | |
fd58fa32 | 437 | oldstatus = status; |
d16005f8 | 438 | |
98fa08a5 PC |
439 | if (status & ~data & BIT(16)) { |
440 | state->ops.enable_ram(state, true); | |
441 | lightrec_invalidate_all(state); | |
442 | } else if (~status & data & BIT(16)) { | |
443 | state->ops.enable_ram(state, false); | |
444 | } | |
445 | } | |
446 | ||
fd58fa32 PC |
447 | if (reg == 13) { |
448 | state->regs.cp0[13] &= ~0x300; | |
449 | state->regs.cp0[13] |= data & 0x300; | |
450 | } else { | |
451 | state->regs.cp0[reg] = data; | |
452 | } | |
98fa08a5 PC |
453 | |
454 | if (reg == 12 || reg == 13) { | |
455 | cause = state->regs.cp0[13]; | |
456 | status = state->regs.cp0[12]; | |
457 | ||
fd58fa32 | 458 | /* Handle software interrupts */ |
98fa08a5 PC |
459 | if (!!(status & cause & 0x300) & status) |
460 | lightrec_set_exit_flags(state, LIGHTREC_EXIT_CHECK_INTERRUPT); | |
fd58fa32 PC |
461 | |
462 | /* Handle hardware interrupts */ | |
463 | if (reg == 12 && !(~status & 0x401) && (~oldstatus & 0x401)) | |
464 | lightrec_set_exit_flags(state, LIGHTREC_EXIT_CHECK_INTERRUPT); | |
98fa08a5 PC |
465 | } |
466 | } | |
467 | ||
468 | static u32 count_leading_bits(s32 data) | |
469 | { | |
98fa08a5 PC |
470 | u32 cnt = 33; |
471 | ||
de742fa0 PC |
472 | #ifdef __has_builtin |
473 | #if __has_builtin(__builtin_clrsb) | |
474 | return 1 + __builtin_clrsb(data); | |
475 | #endif | |
476 | #endif | |
477 | ||
98fa08a5 PC |
478 | data = (data ^ (data >> 31)) << 1; |
479 | ||
480 | do { | |
481 | cnt -= 1; | |
482 | data >>= 1; | |
483 | } while (data); | |
484 | ||
485 | return cnt; | |
98fa08a5 PC |
486 | } |
487 | ||
488 | static void lightrec_mtc2(struct lightrec_state *state, u8 reg, u32 data) | |
489 | { | |
490 | switch (reg) { | |
491 | case 15: | |
492 | state->regs.cp2d[12] = state->regs.cp2d[13]; | |
493 | state->regs.cp2d[13] = state->regs.cp2d[14]; | |
494 | state->regs.cp2d[14] = data; | |
495 | break; | |
496 | case 28: | |
497 | state->regs.cp2d[9] = (data << 7) & 0xf80; | |
498 | state->regs.cp2d[10] = (data << 2) & 0xf80; | |
499 | state->regs.cp2d[11] = (data >> 3) & 0xf80; | |
500 | break; | |
501 | case 31: | |
502 | return; | |
503 | case 30: | |
504 | state->regs.cp2d[31] = count_leading_bits((s32) data); | |
d8b04acd PC |
505 | fallthrough; |
506 | default: | |
98fa08a5 PC |
507 | state->regs.cp2d[reg] = data; |
508 | break; | |
509 | } | |
510 | } | |
d16005f8 | 511 | |
98fa08a5 PC |
512 | static void lightrec_ctc2(struct lightrec_state *state, u8 reg, u32 data) |
513 | { | |
514 | switch (reg) { | |
515 | case 4: | |
516 | case 12: | |
517 | case 20: | |
518 | case 26: | |
519 | case 27: | |
520 | case 29: | |
521 | case 30: | |
522 | data = (s32)(s16) data; | |
523 | break; | |
524 | case 31: | |
525 | data = (data & 0x7ffff000) | !!(data & 0x7f87e000) << 31; | |
d8b04acd PC |
526 | fallthrough; |
527 | default: | |
98fa08a5 PC |
528 | break; |
529 | } | |
530 | ||
531 | state->regs.cp2c[reg] = data; | |
532 | } | |
533 | ||
534 | void lightrec_mtc(struct lightrec_state *state, union code op, u32 data) | |
535 | { | |
536 | if (op.i.op == OP_CP0) | |
537 | lightrec_mtc0(state, op.r.rd, data); | |
538 | else if (op.r.rs == OP_CP2_BASIC_CTC2) | |
539 | lightrec_ctc2(state, op.r.rd, data); | |
540 | else | |
541 | lightrec_mtc2(state, op.r.rd, data); | |
d16005f8 PC |
542 | } |
543 | ||
22eee2ac | 544 | static void lightrec_mtc_cb(struct lightrec_state *state) |
d16005f8 | 545 | { |
22eee2ac PC |
546 | union code op = (union code) state->c_wrapper_arg; |
547 | ||
98fa08a5 | 548 | lightrec_mtc(state, op, state->regs.gpr[op.r.rt]); |
d16005f8 PC |
549 | } |
550 | ||
98fa08a5 | 551 | void lightrec_rfe(struct lightrec_state *state) |
d16005f8 PC |
552 | { |
553 | u32 status; | |
554 | ||
555 | /* Read CP0 Status register (r12) */ | |
98fa08a5 | 556 | status = state->regs.cp0[12]; |
d16005f8 PC |
557 | |
558 | /* Switch the bits */ | |
559 | status = ((status & 0x3c) >> 2) | (status & ~0xf); | |
560 | ||
561 | /* Write it back */ | |
98fa08a5 | 562 | lightrec_mtc0(state, 12, status); |
d16005f8 PC |
563 | } |
564 | ||
98fa08a5 | 565 | void lightrec_cp(struct lightrec_state *state, union code op) |
d16005f8 | 566 | { |
98fa08a5 PC |
567 | if (op.i.op == OP_CP0) { |
568 | pr_err("Invalid CP opcode to coprocessor #0\n"); | |
569 | return; | |
570 | } | |
d16005f8 | 571 | |
98fa08a5 | 572 | (*state->ops.cop2_op)(state, op.opcode); |
d16005f8 PC |
573 | } |
574 | ||
22eee2ac PC |
575 | static void lightrec_cp_cb(struct lightrec_state *state) |
576 | { | |
577 | lightrec_cp(state, (union code) state->c_wrapper_arg); | |
578 | } | |
579 | ||
580 | static void lightrec_syscall_cb(struct lightrec_state *state) | |
d16005f8 PC |
581 | { |
582 | lightrec_set_exit_flags(state, LIGHTREC_EXIT_SYSCALL); | |
583 | } | |
584 | ||
22eee2ac | 585 | static void lightrec_break_cb(struct lightrec_state *state) |
d16005f8 PC |
586 | { |
587 | lightrec_set_exit_flags(state, LIGHTREC_EXIT_BREAK); | |
588 | } | |
589 | ||
590 | struct block * lightrec_get_block(struct lightrec_state *state, u32 pc) | |
591 | { | |
592 | struct block *block = lightrec_find_block(state->block_cache, pc); | |
593 | ||
98fa08a5 | 594 | if (block && lightrec_block_is_outdated(state, block)) { |
d16005f8 PC |
595 | pr_debug("Block at PC 0x%08x is outdated!\n", block->pc); |
596 | ||
597 | /* Make sure the recompiler isn't processing the block we'll | |
598 | * destroy */ | |
599 | if (ENABLE_THREADED_COMPILER) | |
600 | lightrec_recompiler_remove(state->rec, block); | |
601 | ||
602 | lightrec_unregister_block(state->block_cache, block); | |
a59e5536 | 603 | remove_from_code_lut(state->block_cache, block); |
98fa08a5 | 604 | lightrec_free_block(state, block); |
d16005f8 PC |
605 | block = NULL; |
606 | } | |
607 | ||
608 | if (!block) { | |
609 | block = lightrec_precompile_block(state, pc); | |
610 | if (!block) { | |
611 | pr_err("Unable to recompile block at PC 0x%x\n", pc); | |
612 | lightrec_set_exit_flags(state, LIGHTREC_EXIT_SEGFAULT); | |
613 | return NULL; | |
614 | } | |
615 | ||
616 | lightrec_register_block(state->block_cache, block); | |
617 | } | |
618 | ||
619 | return block; | |
620 | } | |
621 | ||
622 | static void * get_next_block_func(struct lightrec_state *state, u32 pc) | |
623 | { | |
624 | struct block *block; | |
625 | bool should_recompile; | |
626 | void *func; | |
d8b04acd | 627 | int err; |
d16005f8 PC |
628 | |
629 | for (;;) { | |
d8b04acd | 630 | func = lut_read(state, lut_offset(pc)); |
d16005f8 | 631 | if (func && func != state->get_next_block) |
98fa08a5 | 632 | break; |
d16005f8 PC |
633 | |
634 | block = lightrec_get_block(state, pc); | |
635 | ||
636 | if (unlikely(!block)) | |
98fa08a5 PC |
637 | break; |
638 | ||
639 | if (OPT_REPLACE_MEMSET && (block->flags & BLOCK_IS_MEMSET)) { | |
640 | func = state->memset_func; | |
641 | break; | |
642 | } | |
d16005f8 | 643 | |
a59e5536 | 644 | should_recompile = block->flags & BLOCK_SHOULD_RECOMPILE && |
645 | !(block->flags & BLOCK_IS_DEAD); | |
d16005f8 PC |
646 | |
647 | if (unlikely(should_recompile)) { | |
a59e5536 | 648 | pr_debug("Block at PC 0x%08x should recompile\n", pc); |
d16005f8 | 649 | |
d16005f8 | 650 | lightrec_unregister(MEM_FOR_CODE, block->code_size); |
a59e5536 | 651 | |
d8b04acd | 652 | if (ENABLE_THREADED_COMPILER) { |
a59e5536 | 653 | lightrec_recompiler_add(state->rec, block); |
d8b04acd PC |
654 | } else { |
655 | err = lightrec_compile_block(state->cstate, block); | |
656 | if (err) { | |
657 | state->exit_flags = LIGHTREC_EXIT_NOMEM; | |
658 | return NULL; | |
659 | } | |
660 | } | |
d16005f8 PC |
661 | } |
662 | ||
663 | if (ENABLE_THREADED_COMPILER && likely(!should_recompile)) | |
98fa08a5 | 664 | func = lightrec_recompiler_run_first_pass(state, block, &pc); |
d16005f8 PC |
665 | else |
666 | func = block->function; | |
667 | ||
668 | if (likely(func)) | |
98fa08a5 | 669 | break; |
d16005f8 | 670 | |
98fa08a5 PC |
671 | if (unlikely(block->flags & BLOCK_NEVER_COMPILE)) { |
672 | pc = lightrec_emulate_block(state, block, pc); | |
673 | ||
674 | } else if (!ENABLE_THREADED_COMPILER) { | |
675 | /* Block wasn't compiled yet - run the interpreter */ | |
676 | if (block->flags & BLOCK_FULLY_TAGGED) | |
677 | pr_debug("Block fully tagged, skipping first pass\n"); | |
678 | else if (ENABLE_FIRST_PASS && likely(!should_recompile)) | |
679 | pc = lightrec_emulate_block(state, block, pc); | |
d16005f8 | 680 | |
d16005f8 | 681 | /* Then compile it using the profiled data */ |
d8b04acd PC |
682 | err = lightrec_compile_block(state->cstate, block); |
683 | if (err) { | |
684 | state->exit_flags = LIGHTREC_EXIT_NOMEM; | |
685 | return NULL; | |
686 | } | |
98fa08a5 PC |
687 | } else { |
688 | lightrec_recompiler_add(state->rec, block); | |
d16005f8 PC |
689 | } |
690 | ||
691 | if (state->exit_flags != LIGHTREC_EXIT_NORMAL || | |
98fa08a5 PC |
692 | state->current_cycle >= state->target_cycle) |
693 | break; | |
d16005f8 | 694 | } |
d16005f8 | 695 | |
98fa08a5 PC |
696 | state->next_pc = pc; |
697 | return func; | |
d16005f8 PC |
698 | } |
699 | ||
700 | static s32 c_function_wrapper(struct lightrec_state *state, s32 cycles_delta, | |
22eee2ac | 701 | void (*f)(struct lightrec_state *)) |
d16005f8 PC |
702 | { |
703 | state->current_cycle = state->target_cycle - cycles_delta; | |
704 | ||
22eee2ac | 705 | (*f)(state); |
d16005f8 PC |
706 | |
707 | return state->target_cycle - state->current_cycle; | |
708 | } | |
709 | ||
d8b04acd PC |
710 | static void * lightrec_alloc_code(struct lightrec_state *state, size_t size) |
711 | { | |
712 | void *code; | |
713 | ||
714 | if (ENABLE_THREADED_COMPILER) | |
715 | lightrec_code_alloc_lock(state); | |
716 | ||
717 | code = tlsf_malloc(state->tlsf, size); | |
718 | ||
719 | if (ENABLE_THREADED_COMPILER) | |
720 | lightrec_code_alloc_unlock(state); | |
721 | ||
722 | return code; | |
723 | } | |
724 | ||
725 | static void lightrec_realloc_code(struct lightrec_state *state, | |
726 | void *ptr, size_t size) | |
727 | { | |
728 | /* NOTE: 'size' MUST be smaller than the size specified during | |
729 | * the allocation. */ | |
730 | ||
731 | if (ENABLE_THREADED_COMPILER) | |
732 | lightrec_code_alloc_lock(state); | |
733 | ||
734 | tlsf_realloc(state->tlsf, ptr, size); | |
735 | ||
736 | if (ENABLE_THREADED_COMPILER) | |
737 | lightrec_code_alloc_unlock(state); | |
738 | } | |
739 | ||
740 | static void lightrec_free_code(struct lightrec_state *state, void *ptr) | |
741 | { | |
742 | if (ENABLE_THREADED_COMPILER) | |
743 | lightrec_code_alloc_lock(state); | |
744 | ||
745 | tlsf_free(state->tlsf, ptr); | |
746 | ||
747 | if (ENABLE_THREADED_COMPILER) | |
748 | lightrec_code_alloc_unlock(state); | |
749 | } | |
750 | ||
02487de7 | 751 | static void * lightrec_emit_code(struct lightrec_state *state, |
d8b04acd | 752 | const struct block *block, |
02487de7 PC |
753 | jit_state_t *_jit, unsigned int *size) |
754 | { | |
755 | bool has_code_buffer = ENABLE_CODE_BUFFER && state->tlsf; | |
756 | jit_word_t code_size, new_code_size; | |
757 | void *code; | |
758 | ||
759 | jit_realize(); | |
760 | ||
761 | if (!ENABLE_DISASSEMBLER) | |
762 | jit_set_data(NULL, 0, JIT_DISABLE_DATA | JIT_DISABLE_NOTE); | |
763 | ||
764 | if (has_code_buffer) { | |
765 | jit_get_code(&code_size); | |
d8b04acd PC |
766 | code = lightrec_alloc_code(state, (size_t) code_size); |
767 | ||
768 | if (!code) { | |
769 | if (ENABLE_THREADED_COMPILER) { | |
770 | /* If we're using the threaded compiler, return | |
771 | * an allocation error here. The threaded | |
772 | * compiler will then empty its job queue and | |
773 | * request a code flush using the reaper. */ | |
774 | return NULL; | |
775 | } | |
776 | ||
777 | /* Remove outdated blocks, and try again */ | |
778 | lightrec_remove_outdated_blocks(state->block_cache, block); | |
779 | ||
780 | pr_debug("Re-try to alloc %zu bytes...\n", code_size); | |
781 | ||
782 | code = lightrec_alloc_code(state, code_size); | |
783 | if (!code) { | |
784 | pr_err("Could not alloc even after removing old blocks!\n"); | |
785 | return NULL; | |
786 | } | |
787 | } | |
02487de7 PC |
788 | |
789 | jit_set_code(code, code_size); | |
790 | } | |
791 | ||
792 | code = jit_emit(); | |
793 | ||
794 | jit_get_code(&new_code_size); | |
795 | lightrec_register(MEM_FOR_CODE, new_code_size); | |
796 | ||
797 | if (has_code_buffer) { | |
d8b04acd | 798 | lightrec_realloc_code(state, code, (size_t) new_code_size); |
02487de7 PC |
799 | |
800 | pr_debug("Creating code block at address 0x%" PRIxPTR ", " | |
801 | "code size: %" PRIuPTR " new: %" PRIuPTR "\n", | |
802 | (uintptr_t) code, code_size, new_code_size); | |
803 | } | |
804 | ||
805 | *size = (unsigned int) new_code_size; | |
806 | ||
807 | return code; | |
808 | } | |
809 | ||
98fa08a5 | 810 | static struct block * generate_wrapper(struct lightrec_state *state) |
d16005f8 PC |
811 | { |
812 | struct block *block; | |
813 | jit_state_t *_jit; | |
814 | unsigned int i; | |
815 | int stack_ptr; | |
d16005f8 | 816 | jit_node_t *to_tramp, *to_fn_epilog; |
fd58fa32 | 817 | jit_node_t *addr[C_WRAPPERS_COUNT - 1]; |
d16005f8 PC |
818 | |
819 | block = lightrec_malloc(state, MEM_FOR_IR, sizeof(*block)); | |
820 | if (!block) | |
821 | goto err_no_mem; | |
822 | ||
823 | _jit = jit_new_state(); | |
824 | if (!_jit) | |
825 | goto err_free_block; | |
826 | ||
827 | jit_name("RW wrapper"); | |
828 | jit_note(__FILE__, __LINE__); | |
829 | ||
830 | /* Wrapper entry point */ | |
831 | jit_prolog(); | |
fd58fa32 PC |
832 | jit_tramp(256); |
833 | ||
834 | /* Add entry points; separate them by opcodes that increment | |
835 | * LIGHTREC_REG_STATE (since we cannot touch other registers). | |
836 | * The difference will then tell us which C function to call. */ | |
837 | for (i = C_WRAPPERS_COUNT - 1; i > 0; i--) { | |
838 | jit_addi(LIGHTREC_REG_STATE, LIGHTREC_REG_STATE, __WORDSIZE / 8); | |
839 | addr[i - 1] = jit_indirect(); | |
840 | } | |
841 | ||
842 | jit_epilog(); | |
843 | jit_prolog(); | |
d16005f8 PC |
844 | |
845 | stack_ptr = jit_allocai(sizeof(uintptr_t) * NUM_TEMPS); | |
846 | ||
fd58fa32 | 847 | /* Save all temporaries on stack */ |
d16005f8 PC |
848 | for (i = 0; i < NUM_TEMPS; i++) |
849 | jit_stxi(stack_ptr + i * sizeof(uintptr_t), JIT_FP, JIT_R(i)); | |
850 | ||
851 | /* Jump to the trampoline */ | |
852 | to_tramp = jit_jmpi(); | |
853 | ||
854 | /* The trampoline will jump back here */ | |
855 | to_fn_epilog = jit_label(); | |
856 | ||
fd58fa32 | 857 | /* Restore temporaries from stack */ |
d16005f8 PC |
858 | for (i = 0; i < NUM_TEMPS; i++) |
859 | jit_ldxi(JIT_R(i), JIT_FP, stack_ptr + i * sizeof(uintptr_t)); | |
860 | ||
861 | jit_ret(); | |
862 | jit_epilog(); | |
863 | ||
864 | /* Trampoline entry point. | |
865 | * The sole purpose of the trampoline is to cheese Lightning not to | |
866 | * save/restore the callee-saved register LIGHTREC_REG_CYCLE, since we | |
867 | * do want to return to the caller with this register modified. */ | |
868 | jit_prolog(); | |
869 | jit_tramp(256); | |
870 | jit_patch(to_tramp); | |
871 | ||
fd58fa32 PC |
872 | /* Retrieve the wrapper function */ |
873 | jit_ldxi(JIT_R0, LIGHTREC_REG_STATE, | |
874 | offsetof(struct lightrec_state, c_wrappers)); | |
875 | ||
876 | /* Restore LIGHTREC_REG_STATE to its correct value */ | |
877 | jit_movi(LIGHTREC_REG_STATE, (uintptr_t) state); | |
878 | ||
d16005f8 PC |
879 | jit_prepare(); |
880 | jit_pushargr(LIGHTREC_REG_STATE); | |
881 | jit_pushargr(LIGHTREC_REG_CYCLE); | |
d16005f8 | 882 | jit_pushargr(JIT_R0); |
98fa08a5 | 883 | jit_finishi(c_function_wrapper); |
d16005f8 | 884 | jit_retval_i(LIGHTREC_REG_CYCLE); |
d16005f8 PC |
885 | |
886 | jit_patch_at(jit_jmpi(), to_fn_epilog); | |
887 | jit_epilog(); | |
888 | ||
d16005f8 | 889 | block->_jit = _jit; |
d16005f8 PC |
890 | block->opcode_list = NULL; |
891 | block->flags = 0; | |
892 | block->nb_ops = 0; | |
893 | ||
d8b04acd | 894 | block->function = lightrec_emit_code(state, block, _jit, |
02487de7 PC |
895 | &block->code_size); |
896 | if (!block->function) | |
897 | goto err_free_block; | |
898 | ||
fd58fa32 PC |
899 | state->wrappers_eps[C_WRAPPERS_COUNT - 1] = block->function; |
900 | ||
901 | for (i = 0; i < C_WRAPPERS_COUNT - 1; i++) | |
902 | state->wrappers_eps[i] = jit_address(addr[i]); | |
903 | ||
d16005f8 PC |
904 | if (ENABLE_DISASSEMBLER) { |
905 | pr_debug("Wrapper block:\n"); | |
906 | jit_disassemble(); | |
907 | } | |
908 | ||
909 | jit_clear_state(); | |
910 | return block; | |
911 | ||
912 | err_free_block: | |
913 | lightrec_free(state, MEM_FOR_IR, sizeof(*block), block); | |
914 | err_no_mem: | |
915 | pr_err("Unable to compile wrapper: Out of memory\n"); | |
916 | return NULL; | |
917 | } | |
918 | ||
98fa08a5 PC |
919 | static u32 lightrec_memset(struct lightrec_state *state) |
920 | { | |
921 | u32 kunseg_pc = kunseg(state->regs.gpr[4]); | |
922 | void *host; | |
923 | const struct lightrec_mem_map *map = lightrec_get_map(state, &host, kunseg_pc); | |
924 | u32 length = state->regs.gpr[5] * 4; | |
925 | ||
926 | if (!map) { | |
927 | pr_err("Unable to find memory map for memset target address " | |
928 | "0x%x\n", kunseg_pc); | |
929 | return 0; | |
930 | } | |
931 | ||
932 | pr_debug("Calling host memset, PC 0x%x (host address 0x%" PRIxPTR ") for %u bytes\n", | |
933 | kunseg_pc, (uintptr_t)host, length); | |
934 | memset(host, 0, length); | |
935 | ||
936 | if (!state->invalidate_from_dma_only) | |
937 | lightrec_invalidate_map(state, map, kunseg_pc, length); | |
938 | ||
939 | /* Rough estimation of the number of cycles consumed */ | |
940 | return 8 + 5 * (length + 3 / 4); | |
941 | } | |
942 | ||
d16005f8 PC |
943 | static struct block * generate_dispatcher(struct lightrec_state *state) |
944 | { | |
945 | struct block *block; | |
946 | jit_state_t *_jit; | |
02487de7 | 947 | jit_node_t *to_end, *loop, *addr, *addr2, *addr3; |
d16005f8 | 948 | unsigned int i; |
02487de7 | 949 | u32 offset; |
d16005f8 PC |
950 | |
951 | block = lightrec_malloc(state, MEM_FOR_IR, sizeof(*block)); | |
952 | if (!block) | |
953 | goto err_no_mem; | |
954 | ||
955 | _jit = jit_new_state(); | |
956 | if (!_jit) | |
957 | goto err_free_block; | |
958 | ||
959 | jit_name("dispatcher"); | |
960 | jit_note(__FILE__, __LINE__); | |
961 | ||
962 | jit_prolog(); | |
963 | jit_frame(256); | |
964 | ||
965 | jit_getarg(JIT_R0, jit_arg()); | |
d16005f8 | 966 | jit_getarg_i(LIGHTREC_REG_CYCLE, jit_arg()); |
d16005f8 PC |
967 | |
968 | /* Force all callee-saved registers to be pushed on the stack */ | |
969 | for (i = 0; i < NUM_REGS; i++) | |
970 | jit_movr(JIT_V(i), JIT_V(i)); | |
971 | ||
972 | /* Pass lightrec_state structure to blocks, using the last callee-saved | |
973 | * register that Lightning provides */ | |
974 | jit_movi(LIGHTREC_REG_STATE, (intptr_t) state); | |
975 | ||
976 | loop = jit_label(); | |
977 | ||
978 | /* Call the block's code */ | |
979 | jit_jmpr(JIT_R0); | |
980 | ||
98fa08a5 PC |
981 | if (OPT_REPLACE_MEMSET) { |
982 | /* Blocks will jump here when they need to call | |
983 | * lightrec_memset() */ | |
984 | addr3 = jit_indirect(); | |
985 | ||
986 | jit_prepare(); | |
987 | jit_pushargr(LIGHTREC_REG_STATE); | |
988 | jit_finishi(lightrec_memset); | |
989 | ||
990 | jit_ldxi_ui(JIT_V0, LIGHTREC_REG_STATE, | |
991 | offsetof(struct lightrec_state, regs.gpr[31])); | |
992 | ||
993 | jit_retval(JIT_R0); | |
994 | jit_subr(LIGHTREC_REG_CYCLE, LIGHTREC_REG_CYCLE, JIT_R0); | |
995 | } | |
996 | ||
d16005f8 PC |
997 | /* The block will jump here, with the number of cycles remaining in |
998 | * LIGHTREC_REG_CYCLE */ | |
999 | addr2 = jit_indirect(); | |
1000 | ||
98fa08a5 PC |
1001 | /* Store back the next_pc to the lightrec_state structure */ |
1002 | offset = offsetof(struct lightrec_state, next_pc); | |
1003 | jit_stxi_i(offset, LIGHTREC_REG_STATE, JIT_V0); | |
1004 | ||
d16005f8 PC |
1005 | /* Jump to end if state->target_cycle < state->current_cycle */ |
1006 | to_end = jit_blei(LIGHTREC_REG_CYCLE, 0); | |
1007 | ||
1008 | /* Convert next PC to KUNSEG and avoid mirrors */ | |
02487de7 PC |
1009 | jit_andi(JIT_R0, JIT_V0, 0x10000000 | (RAM_SIZE - 1)); |
1010 | jit_rshi_u(JIT_R1, JIT_R0, 28); | |
1011 | jit_andi(JIT_R2, JIT_V0, BIOS_SIZE - 1); | |
1012 | jit_addi(JIT_R2, JIT_R2, RAM_SIZE); | |
1013 | jit_movnr(JIT_R0, JIT_R2, JIT_R1); | |
1014 | ||
1015 | /* If possible, use the code LUT */ | |
1016 | if (!lut_is_32bit(state)) | |
98fa08a5 | 1017 | jit_lshi(JIT_R0, JIT_R0, 1); |
d16005f8 | 1018 | jit_addr(JIT_R0, JIT_R0, LIGHTREC_REG_STATE); |
02487de7 PC |
1019 | |
1020 | offset = offsetof(struct lightrec_state, code_lut); | |
1021 | if (lut_is_32bit(state)) | |
1022 | jit_ldxi_ui(JIT_R0, JIT_R0, offset); | |
1023 | else | |
1024 | jit_ldxi(JIT_R0, JIT_R0, offset); | |
d16005f8 PC |
1025 | |
1026 | /* If we get non-NULL, loop */ | |
1027 | jit_patch_at(jit_bnei(JIT_R0, 0), loop); | |
1028 | ||
1029 | /* Slow path: call C function get_next_block_func() */ | |
d16005f8 | 1030 | |
98fa08a5 | 1031 | if (ENABLE_FIRST_PASS || OPT_DETECT_IMPOSSIBLE_BRANCHES) { |
d16005f8 PC |
1032 | /* We may call the interpreter - update state->current_cycle */ |
1033 | jit_ldxi_i(JIT_R2, LIGHTREC_REG_STATE, | |
1034 | offsetof(struct lightrec_state, target_cycle)); | |
1035 | jit_subr(JIT_R1, JIT_R2, LIGHTREC_REG_CYCLE); | |
1036 | jit_stxi_i(offsetof(struct lightrec_state, current_cycle), | |
1037 | LIGHTREC_REG_STATE, JIT_R1); | |
1038 | } | |
1039 | ||
1040 | /* The code LUT will be set to this address when the block at the target | |
1041 | * PC has been preprocessed but not yet compiled by the threaded | |
1042 | * recompiler */ | |
1043 | addr = jit_indirect(); | |
1044 | ||
1045 | /* Get the next block */ | |
1046 | jit_prepare(); | |
1047 | jit_pushargr(LIGHTREC_REG_STATE); | |
1048 | jit_pushargr(JIT_V0); | |
1049 | jit_finishi(&get_next_block_func); | |
1050 | jit_retval(JIT_R0); | |
1051 | ||
98fa08a5 | 1052 | if (ENABLE_FIRST_PASS || OPT_DETECT_IMPOSSIBLE_BRANCHES) { |
d16005f8 PC |
1053 | /* The interpreter may have updated state->current_cycle and |
1054 | * state->target_cycle - recalc the delta */ | |
1055 | jit_ldxi_i(JIT_R1, LIGHTREC_REG_STATE, | |
1056 | offsetof(struct lightrec_state, current_cycle)); | |
1057 | jit_ldxi_i(JIT_R2, LIGHTREC_REG_STATE, | |
1058 | offsetof(struct lightrec_state, target_cycle)); | |
1059 | jit_subr(LIGHTREC_REG_CYCLE, JIT_R2, JIT_R1); | |
1060 | } | |
1061 | ||
1062 | /* If we get non-NULL, loop */ | |
1063 | jit_patch_at(jit_bnei(JIT_R0, 0), loop); | |
1064 | ||
d16005f8 PC |
1065 | /* When exiting, the recompiled code will jump to that address */ |
1066 | jit_note(__FILE__, __LINE__); | |
1067 | jit_patch(to_end); | |
1068 | ||
d16005f8 PC |
1069 | jit_retr(LIGHTREC_REG_CYCLE); |
1070 | jit_epilog(); | |
1071 | ||
d16005f8 | 1072 | block->_jit = _jit; |
d16005f8 PC |
1073 | block->opcode_list = NULL; |
1074 | block->flags = 0; | |
1075 | block->nb_ops = 0; | |
1076 | ||
d8b04acd | 1077 | block->function = lightrec_emit_code(state, block, _jit, |
02487de7 PC |
1078 | &block->code_size); |
1079 | if (!block->function) | |
1080 | goto err_free_block; | |
d16005f8 PC |
1081 | |
1082 | state->eob_wrapper_func = jit_address(addr2); | |
98fa08a5 PC |
1083 | if (OPT_REPLACE_MEMSET) |
1084 | state->memset_func = jit_address(addr3); | |
d16005f8 PC |
1085 | state->get_next_block = jit_address(addr); |
1086 | ||
1087 | if (ENABLE_DISASSEMBLER) { | |
1088 | pr_debug("Dispatcher block:\n"); | |
1089 | jit_disassemble(); | |
1090 | } | |
1091 | ||
1092 | /* We're done! */ | |
1093 | jit_clear_state(); | |
1094 | return block; | |
1095 | ||
1096 | err_free_block: | |
1097 | lightrec_free(state, MEM_FOR_IR, sizeof(*block), block); | |
1098 | err_no_mem: | |
1099 | pr_err("Unable to compile dispatcher: Out of memory\n"); | |
1100 | return NULL; | |
1101 | } | |
1102 | ||
1103 | union code lightrec_read_opcode(struct lightrec_state *state, u32 pc) | |
1104 | { | |
fd58fa32 | 1105 | void *host = NULL; |
d16005f8 | 1106 | |
98fa08a5 | 1107 | lightrec_get_map(state, &host, kunseg(pc)); |
d16005f8 | 1108 | |
98fa08a5 | 1109 | const u32 *code = (u32 *)host; |
02487de7 | 1110 | return (union code) LE32TOH(*code); |
98fa08a5 | 1111 | } |
d16005f8 | 1112 | |
98fa08a5 PC |
1113 | unsigned int lightrec_cycles_of_opcode(union code code) |
1114 | { | |
1115 | return 2; | |
1116 | } | |
d16005f8 | 1117 | |
98fa08a5 PC |
1118 | void lightrec_free_opcode_list(struct lightrec_state *state, struct block *block) |
1119 | { | |
1120 | lightrec_free(state, MEM_FOR_IR, | |
1121 | sizeof(*block->opcode_list) * block->nb_ops, | |
1122 | block->opcode_list); | |
1123 | } | |
1124 | ||
1125 | static unsigned int lightrec_get_mips_block_len(const u32 *src) | |
1126 | { | |
1127 | unsigned int i; | |
1128 | union code c; | |
1129 | ||
1130 | for (i = 1; ; i++) { | |
1131 | c.opcode = LE32TOH(*src++); | |
1132 | ||
1133 | if (is_syscall(c)) | |
1134 | return i; | |
1135 | ||
1136 | if (is_unconditional_jump(c)) | |
1137 | return i + 1; | |
1138 | } | |
1139 | } | |
1140 | ||
1141 | static struct opcode * lightrec_disassemble(struct lightrec_state *state, | |
1142 | const u32 *src, unsigned int *len) | |
1143 | { | |
1144 | struct opcode *list; | |
1145 | unsigned int i, length; | |
1146 | ||
1147 | length = lightrec_get_mips_block_len(src); | |
1148 | ||
1149 | list = lightrec_malloc(state, MEM_FOR_IR, sizeof(*list) * length); | |
1150 | if (!list) { | |
1151 | pr_err("Unable to allocate memory\n"); | |
1152 | return NULL; | |
1153 | } | |
1154 | ||
1155 | for (i = 0; i < length; i++) { | |
1156 | list[i].opcode = LE32TOH(src[i]); | |
1157 | list[i].flags = 0; | |
1158 | } | |
1159 | ||
1160 | *len = length * sizeof(u32); | |
1161 | ||
1162 | return list; | |
d16005f8 PC |
1163 | } |
1164 | ||
1165 | static struct block * lightrec_precompile_block(struct lightrec_state *state, | |
1166 | u32 pc) | |
1167 | { | |
1168 | struct opcode *list; | |
1169 | struct block *block; | |
98fa08a5 PC |
1170 | void *host; |
1171 | const struct lightrec_mem_map *map = lightrec_get_map(state, &host, kunseg(pc)); | |
1172 | const u32 *code = (u32 *) host; | |
d16005f8 | 1173 | unsigned int length; |
98fa08a5 | 1174 | bool fully_tagged; |
d16005f8 PC |
1175 | |
1176 | if (!map) | |
1177 | return NULL; | |
1178 | ||
d16005f8 PC |
1179 | block = lightrec_malloc(state, MEM_FOR_IR, sizeof(*block)); |
1180 | if (!block) { | |
1181 | pr_err("Unable to recompile block: Out of memory\n"); | |
1182 | return NULL; | |
1183 | } | |
1184 | ||
1185 | list = lightrec_disassemble(state, code, &length); | |
1186 | if (!list) { | |
1187 | lightrec_free(state, MEM_FOR_IR, sizeof(*block), block); | |
1188 | return NULL; | |
1189 | } | |
1190 | ||
1191 | block->pc = pc; | |
d16005f8 PC |
1192 | block->_jit = NULL; |
1193 | block->function = NULL; | |
1194 | block->opcode_list = list; | |
98fa08a5 | 1195 | block->code = code; |
d16005f8 PC |
1196 | block->next = NULL; |
1197 | block->flags = 0; | |
1198 | block->code_size = 0; | |
d8b04acd | 1199 | block->precompile_date = state->current_cycle; |
d16005f8 PC |
1200 | #if ENABLE_THREADED_COMPILER |
1201 | block->op_list_freed = (atomic_flag)ATOMIC_FLAG_INIT; | |
1202 | #endif | |
1203 | block->nb_ops = length / sizeof(u32); | |
1204 | ||
98fa08a5 | 1205 | lightrec_optimize(state, block); |
d16005f8 PC |
1206 | |
1207 | length = block->nb_ops * sizeof(u32); | |
1208 | ||
1209 | lightrec_register(MEM_FOR_MIPS_CODE, length); | |
1210 | ||
1211 | if (ENABLE_DISASSEMBLER) { | |
98fa08a5 PC |
1212 | pr_debug("Disassembled block at PC: 0x%08x\n", block->pc); |
1213 | lightrec_print_disassembly(block, code); | |
d16005f8 PC |
1214 | } |
1215 | ||
98fa08a5 | 1216 | pr_debug("Block size: %hu opcodes\n", block->nb_ops); |
d16005f8 PC |
1217 | |
1218 | /* If the first opcode is an 'impossible' branch, never compile the | |
1219 | * block */ | |
98fa08a5 | 1220 | if (should_emulate(block->opcode_list)) |
d16005f8 PC |
1221 | block->flags |= BLOCK_NEVER_COMPILE; |
1222 | ||
98fa08a5 PC |
1223 | fully_tagged = lightrec_block_is_fully_tagged(block); |
1224 | if (fully_tagged) | |
1225 | block->flags |= BLOCK_FULLY_TAGGED; | |
1226 | ||
1227 | if (OPT_REPLACE_MEMSET && (block->flags & BLOCK_IS_MEMSET)) | |
02487de7 | 1228 | lut_write(state, lut_offset(pc), state->memset_func); |
98fa08a5 | 1229 | |
d16005f8 PC |
1230 | block->hash = lightrec_calculate_block_hash(block); |
1231 | ||
a59e5536 | 1232 | pr_debug("Recompile count: %u\n", state->nb_precompile++); |
1233 | ||
d16005f8 PC |
1234 | return block; |
1235 | } | |
1236 | ||
98fa08a5 | 1237 | static bool lightrec_block_is_fully_tagged(const struct block *block) |
d16005f8 | 1238 | { |
98fa08a5 PC |
1239 | const struct opcode *op; |
1240 | unsigned int i; | |
1241 | ||
1242 | for (i = 0; i < block->nb_ops; i++) { | |
1243 | op = &block->opcode_list[i]; | |
d16005f8 | 1244 | |
d16005f8 PC |
1245 | /* Verify that all load/stores of the opcode list |
1246 | * Check all loads/stores of the opcode list and mark the | |
1247 | * block as fully compiled if they all have been tagged. */ | |
1248 | switch (op->c.i.op) { | |
1249 | case OP_LB: | |
1250 | case OP_LH: | |
1251 | case OP_LWL: | |
1252 | case OP_LW: | |
1253 | case OP_LBU: | |
1254 | case OP_LHU: | |
1255 | case OP_LWR: | |
1256 | case OP_SB: | |
1257 | case OP_SH: | |
1258 | case OP_SWL: | |
1259 | case OP_SW: | |
1260 | case OP_SWR: | |
1261 | case OP_LWC2: | |
1262 | case OP_SWC2: | |
22eee2ac | 1263 | if (!LIGHTREC_FLAGS_GET_IO_MODE(op->flags)) |
d16005f8 | 1264 | return false; |
d8b04acd PC |
1265 | fallthrough; |
1266 | default: | |
d16005f8 PC |
1267 | continue; |
1268 | } | |
1269 | } | |
1270 | ||
1271 | return true; | |
1272 | } | |
1273 | ||
98fa08a5 | 1274 | static void lightrec_reap_block(struct lightrec_state *state, void *data) |
a59e5536 | 1275 | { |
1276 | struct block *block = data; | |
1277 | ||
1278 | pr_debug("Reap dead block at PC 0x%08x\n", block->pc); | |
98fa08a5 PC |
1279 | lightrec_unregister_block(state->block_cache, block); |
1280 | lightrec_free_block(state, block); | |
a59e5536 | 1281 | } |
1282 | ||
98fa08a5 | 1283 | static void lightrec_reap_jit(struct lightrec_state *state, void *data) |
a59e5536 | 1284 | { |
1285 | _jit_destroy_state(data); | |
1286 | } | |
1287 | ||
02487de7 PC |
1288 | static void lightrec_free_function(struct lightrec_state *state, void *fn) |
1289 | { | |
1290 | if (ENABLE_CODE_BUFFER && state->tlsf) { | |
1291 | pr_debug("Freeing code block at 0x%" PRIxPTR "\n", (uintptr_t) fn); | |
d8b04acd | 1292 | lightrec_free_code(state, fn); |
02487de7 PC |
1293 | } |
1294 | } | |
1295 | ||
1296 | static void lightrec_reap_function(struct lightrec_state *state, void *data) | |
1297 | { | |
1298 | lightrec_free_function(state, data); | |
1299 | } | |
1300 | ||
98fa08a5 PC |
1301 | int lightrec_compile_block(struct lightrec_cstate *cstate, |
1302 | struct block *block) | |
d16005f8 | 1303 | { |
98fa08a5 | 1304 | struct lightrec_state *state = cstate->state; |
a59e5536 | 1305 | struct lightrec_branch_target *target; |
d16005f8 | 1306 | bool op_list_freed = false, fully_tagged = false; |
a59e5536 | 1307 | struct block *block2; |
d16005f8 | 1308 | struct opcode *elm; |
a59e5536 | 1309 | jit_state_t *_jit, *oldjit; |
d16005f8 PC |
1310 | jit_node_t *start_of_block; |
1311 | bool skip_next = false; | |
d8b04acd | 1312 | void *old_fn, *new_fn; |
d16005f8 | 1313 | unsigned int i, j; |
98fa08a5 | 1314 | u32 offset; |
d16005f8 PC |
1315 | |
1316 | fully_tagged = lightrec_block_is_fully_tagged(block); | |
1317 | if (fully_tagged) | |
1318 | block->flags |= BLOCK_FULLY_TAGGED; | |
1319 | ||
1320 | _jit = jit_new_state(); | |
1321 | if (!_jit) | |
1322 | return -ENOMEM; | |
1323 | ||
a59e5536 | 1324 | oldjit = block->_jit; |
02487de7 | 1325 | old_fn = block->function; |
d16005f8 PC |
1326 | block->_jit = _jit; |
1327 | ||
98fa08a5 PC |
1328 | lightrec_regcache_reset(cstate->reg_cache); |
1329 | cstate->cycles = 0; | |
1330 | cstate->nb_branches = 0; | |
1331 | cstate->nb_local_branches = 0; | |
1332 | cstate->nb_targets = 0; | |
d16005f8 PC |
1333 | |
1334 | jit_prolog(); | |
1335 | jit_tramp(256); | |
1336 | ||
1337 | start_of_block = jit_label(); | |
1338 | ||
98fa08a5 PC |
1339 | for (i = 0; i < block->nb_ops; i++) { |
1340 | elm = &block->opcode_list[i]; | |
d16005f8 PC |
1341 | |
1342 | if (skip_next) { | |
1343 | skip_next = false; | |
1344 | continue; | |
1345 | } | |
1346 | ||
98fa08a5 | 1347 | cstate->cycles += lightrec_cycles_of_opcode(elm->c); |
d16005f8 | 1348 | |
98fa08a5 | 1349 | if (should_emulate(elm)) { |
d16005f8 | 1350 | pr_debug("Branch at offset 0x%x will be emulated\n", |
98fa08a5 PC |
1351 | i << 2); |
1352 | ||
1353 | lightrec_emit_eob(cstate, block, i, false); | |
d16005f8 | 1354 | skip_next = !(elm->flags & LIGHTREC_NO_DS); |
98fa08a5 PC |
1355 | } else { |
1356 | lightrec_rec_opcode(cstate, block, i); | |
d16005f8 PC |
1357 | skip_next = has_delay_slot(elm->c) && |
1358 | !(elm->flags & LIGHTREC_NO_DS); | |
1359 | #if _WIN32 | |
1360 | /* FIXME: GNU Lightning on Windows seems to use our | |
1361 | * mapped registers as temporaries. Until the actual bug | |
1362 | * is found and fixed, unconditionally mark our | |
1363 | * registers as live here. */ | |
98fa08a5 | 1364 | lightrec_regcache_mark_live(cstate->reg_cache, _jit); |
d16005f8 PC |
1365 | #endif |
1366 | } | |
1367 | } | |
1368 | ||
98fa08a5 PC |
1369 | for (i = 0; i < cstate->nb_branches; i++) |
1370 | jit_patch(cstate->branches[i]); | |
d16005f8 | 1371 | |
98fa08a5 PC |
1372 | for (i = 0; i < cstate->nb_local_branches; i++) { |
1373 | struct lightrec_branch *branch = &cstate->local_branches[i]; | |
d16005f8 PC |
1374 | |
1375 | pr_debug("Patch local branch to offset 0x%x\n", | |
1376 | branch->target << 2); | |
1377 | ||
1378 | if (branch->target == 0) { | |
1379 | jit_patch_at(branch->branch, start_of_block); | |
1380 | continue; | |
1381 | } | |
1382 | ||
98fa08a5 PC |
1383 | for (j = 0; j < cstate->nb_targets; j++) { |
1384 | if (cstate->targets[j].offset == branch->target) { | |
d16005f8 | 1385 | jit_patch_at(branch->branch, |
98fa08a5 | 1386 | cstate->targets[j].label); |
d16005f8 PC |
1387 | break; |
1388 | } | |
1389 | } | |
1390 | ||
98fa08a5 | 1391 | if (j == cstate->nb_targets) |
d16005f8 PC |
1392 | pr_err("Unable to find branch target\n"); |
1393 | } | |
1394 | ||
1395 | jit_ldxi(JIT_R0, LIGHTREC_REG_STATE, | |
1396 | offsetof(struct lightrec_state, eob_wrapper_func)); | |
1397 | ||
1398 | jit_jmpr(JIT_R0); | |
1399 | ||
1400 | jit_ret(); | |
1401 | jit_epilog(); | |
1402 | ||
d8b04acd PC |
1403 | new_fn = lightrec_emit_code(state, block, _jit, &block->code_size); |
1404 | if (!new_fn) { | |
1405 | if (!ENABLE_THREADED_COMPILER) | |
1406 | pr_err("Unable to compile block!\n"); | |
1407 | block->_jit = oldjit; | |
1408 | _jit_destroy_state(_jit); | |
1409 | return -ENOMEM; | |
02487de7 PC |
1410 | } |
1411 | ||
d8b04acd | 1412 | block->function = new_fn; |
a59e5536 | 1413 | block->flags &= ~BLOCK_SHOULD_RECOMPILE; |
d16005f8 PC |
1414 | |
1415 | /* Add compiled function to the LUT */ | |
02487de7 | 1416 | lut_write(state, lut_offset(block->pc), block->function); |
d16005f8 | 1417 | |
98fa08a5 PC |
1418 | if (ENABLE_THREADED_COMPILER) { |
1419 | /* Since we might try to reap the same block multiple times, | |
1420 | * we need the reaper to wait until everything has been | |
1421 | * submitted, so that the duplicate entries can be dropped. */ | |
1422 | lightrec_reaper_pause(state->reaper); | |
a59e5536 | 1423 | } |
1424 | ||
1425 | /* Detect old blocks that have been covered by the new one */ | |
98fa08a5 PC |
1426 | for (i = 0; i < cstate->nb_targets; i++) { |
1427 | target = &cstate->targets[i]; | |
a59e5536 | 1428 | |
1429 | if (!target->offset) | |
1430 | continue; | |
1431 | ||
1432 | offset = block->pc + target->offset * sizeof(u32); | |
1433 | block2 = lightrec_find_block(state->block_cache, offset); | |
1434 | if (block2) { | |
1435 | /* No need to check if block2 is compilable - it must | |
1436 | * be, otherwise block wouldn't be compilable either */ | |
1437 | ||
98fa08a5 PC |
1438 | /* Set the "block dead" flag to prevent the dynarec from |
1439 | * recompiling this block */ | |
a59e5536 | 1440 | block2->flags |= BLOCK_IS_DEAD; |
1441 | ||
98fa08a5 PC |
1442 | /* If block2 was pending for compilation, cancel it. |
1443 | * If it's being compiled right now, wait until it | |
1444 | * finishes. */ | |
1445 | if (ENABLE_THREADED_COMPILER) | |
1446 | lightrec_recompiler_remove(state->rec, block2); | |
fd58fa32 | 1447 | } |
98fa08a5 | 1448 | |
fd58fa32 PC |
1449 | /* We know from now on that block2 (if present) isn't going to |
1450 | * be compiled. We can override the LUT entry with our new | |
1451 | * block's entry point. */ | |
1452 | offset = lut_offset(block->pc) + target->offset; | |
02487de7 | 1453 | lut_write(state, offset, jit_address(target->label)); |
98fa08a5 | 1454 | |
fd58fa32 | 1455 | if (block2) { |
a59e5536 | 1456 | pr_debug("Reap block 0x%08x as it's covered by block " |
1457 | "0x%08x\n", block2->pc, block->pc); | |
1458 | ||
98fa08a5 | 1459 | /* Finally, reap the block. */ |
a59e5536 | 1460 | if (ENABLE_THREADED_COMPILER) { |
a59e5536 | 1461 | lightrec_reaper_add(state->reaper, |
1462 | lightrec_reap_block, | |
1463 | block2); | |
1464 | } else { | |
98fa08a5 PC |
1465 | lightrec_unregister_block(state->block_cache, block2); |
1466 | lightrec_free_block(state, block2); | |
a59e5536 | 1467 | } |
1468 | } | |
1469 | } | |
1470 | ||
b19ddc79 | 1471 | if (ENABLE_THREADED_COMPILER) |
98fa08a5 PC |
1472 | lightrec_reaper_continue(state->reaper); |
1473 | ||
d16005f8 | 1474 | if (ENABLE_DISASSEMBLER) { |
98fa08a5 | 1475 | pr_debug("Compiling block at PC: 0x%08x\n", block->pc); |
d16005f8 PC |
1476 | jit_disassemble(); |
1477 | } | |
1478 | ||
1479 | jit_clear_state(); | |
1480 | ||
1481 | #if ENABLE_THREADED_COMPILER | |
1482 | if (fully_tagged) | |
1483 | op_list_freed = atomic_flag_test_and_set(&block->op_list_freed); | |
1484 | #endif | |
1485 | if (fully_tagged && !op_list_freed) { | |
1486 | pr_debug("Block PC 0x%08x is fully tagged" | |
1487 | " - free opcode list\n", block->pc); | |
98fa08a5 | 1488 | lightrec_free_opcode_list(state, block); |
d16005f8 PC |
1489 | block->opcode_list = NULL; |
1490 | } | |
1491 | ||
a59e5536 | 1492 | if (oldjit) { |
1493 | pr_debug("Block 0x%08x recompiled, reaping old jit context.\n", | |
1494 | block->pc); | |
1495 | ||
02487de7 | 1496 | if (ENABLE_THREADED_COMPILER) { |
a59e5536 | 1497 | lightrec_reaper_add(state->reaper, |
1498 | lightrec_reap_jit, oldjit); | |
02487de7 PC |
1499 | lightrec_reaper_add(state->reaper, |
1500 | lightrec_reap_function, old_fn); | |
1501 | } else { | |
a59e5536 | 1502 | _jit_destroy_state(oldjit); |
02487de7 PC |
1503 | lightrec_free_function(state, old_fn); |
1504 | } | |
a59e5536 | 1505 | } |
1506 | ||
d16005f8 PC |
1507 | return 0; |
1508 | } | |
1509 | ||
98fa08a5 PC |
1510 | static void lightrec_print_info(struct lightrec_state *state) |
1511 | { | |
1512 | if ((state->current_cycle & ~0xfffffff) != state->old_cycle_counter) { | |
1513 | pr_info("Lightrec RAM usage: IR %u KiB, CODE %u KiB, " | |
1514 | "MIPS %u KiB, TOTAL %u KiB, avg. IPI %f\n", | |
1515 | lightrec_get_mem_usage(MEM_FOR_IR) / 1024, | |
1516 | lightrec_get_mem_usage(MEM_FOR_CODE) / 1024, | |
1517 | lightrec_get_mem_usage(MEM_FOR_MIPS_CODE) / 1024, | |
1518 | lightrec_get_total_mem_usage() / 1024, | |
1519 | lightrec_get_average_ipi()); | |
1520 | state->old_cycle_counter = state->current_cycle & ~0xfffffff; | |
1521 | } | |
1522 | } | |
1523 | ||
d16005f8 PC |
1524 | u32 lightrec_execute(struct lightrec_state *state, u32 pc, u32 target_cycle) |
1525 | { | |
1526 | s32 (*func)(void *, s32) = (void *)state->dispatcher->function; | |
1527 | void *block_trace; | |
1528 | s32 cycles_delta; | |
1529 | ||
1530 | state->exit_flags = LIGHTREC_EXIT_NORMAL; | |
1531 | ||
1532 | /* Handle the cycle counter overflowing */ | |
1533 | if (unlikely(target_cycle < state->current_cycle)) | |
1534 | target_cycle = UINT_MAX; | |
1535 | ||
1536 | state->target_cycle = target_cycle; | |
98fa08a5 | 1537 | state->next_pc = pc; |
d16005f8 PC |
1538 | |
1539 | block_trace = get_next_block_func(state, pc); | |
1540 | if (block_trace) { | |
1541 | cycles_delta = state->target_cycle - state->current_cycle; | |
1542 | ||
1543 | cycles_delta = (*func)(block_trace, cycles_delta); | |
1544 | ||
1545 | state->current_cycle = state->target_cycle - cycles_delta; | |
1546 | } | |
1547 | ||
a59e5536 | 1548 | if (ENABLE_THREADED_COMPILER) |
1549 | lightrec_reaper_reap(state->reaper); | |
1550 | ||
98fa08a5 PC |
1551 | if (LOG_LEVEL >= INFO_L) |
1552 | lightrec_print_info(state); | |
1553 | ||
d16005f8 PC |
1554 | return state->next_pc; |
1555 | } | |
1556 | ||
1557 | u32 lightrec_execute_one(struct lightrec_state *state, u32 pc) | |
1558 | { | |
1559 | return lightrec_execute(state, pc, state->current_cycle); | |
1560 | } | |
1561 | ||
1562 | u32 lightrec_run_interpreter(struct lightrec_state *state, u32 pc) | |
1563 | { | |
1564 | struct block *block = lightrec_get_block(state, pc); | |
1565 | if (!block) | |
1566 | return 0; | |
1567 | ||
1568 | state->exit_flags = LIGHTREC_EXIT_NORMAL; | |
1569 | ||
98fa08a5 PC |
1570 | pc = lightrec_emulate_block(state, block, pc); |
1571 | ||
1572 | if (LOG_LEVEL >= INFO_L) | |
1573 | lightrec_print_info(state); | |
1574 | ||
1575 | return pc; | |
d16005f8 PC |
1576 | } |
1577 | ||
98fa08a5 | 1578 | void lightrec_free_block(struct lightrec_state *state, struct block *block) |
d16005f8 PC |
1579 | { |
1580 | lightrec_unregister(MEM_FOR_MIPS_CODE, block->nb_ops * sizeof(u32)); | |
1581 | if (block->opcode_list) | |
98fa08a5 | 1582 | lightrec_free_opcode_list(state, block); |
d16005f8 PC |
1583 | if (block->_jit) |
1584 | _jit_destroy_state(block->_jit); | |
d8b04acd PC |
1585 | if (block->function) { |
1586 | lightrec_free_function(state, block->function); | |
1587 | lightrec_unregister(MEM_FOR_CODE, block->code_size); | |
1588 | } | |
98fa08a5 PC |
1589 | lightrec_free(state, MEM_FOR_IR, sizeof(*block), block); |
1590 | } | |
1591 | ||
1592 | struct lightrec_cstate * lightrec_create_cstate(struct lightrec_state *state) | |
1593 | { | |
1594 | struct lightrec_cstate *cstate; | |
1595 | ||
1596 | cstate = lightrec_malloc(state, MEM_FOR_LIGHTREC, sizeof(*cstate)); | |
1597 | if (!cstate) | |
1598 | return NULL; | |
1599 | ||
1600 | cstate->reg_cache = lightrec_regcache_init(state); | |
1601 | if (!cstate->reg_cache) { | |
1602 | lightrec_free(state, MEM_FOR_LIGHTREC, sizeof(*cstate), cstate); | |
1603 | return NULL; | |
1604 | } | |
1605 | ||
1606 | cstate->state = state; | |
1607 | ||
1608 | return cstate; | |
1609 | } | |
1610 | ||
1611 | void lightrec_free_cstate(struct lightrec_cstate *cstate) | |
1612 | { | |
1613 | lightrec_free_regcache(cstate->reg_cache); | |
1614 | lightrec_free(cstate->state, MEM_FOR_LIGHTREC, sizeof(*cstate), cstate); | |
d16005f8 PC |
1615 | } |
1616 | ||
1617 | struct lightrec_state * lightrec_init(char *argv0, | |
1618 | const struct lightrec_mem_map *map, | |
1619 | size_t nb, | |
1620 | const struct lightrec_ops *ops) | |
1621 | { | |
d8b04acd | 1622 | const struct lightrec_mem_map *codebuf_map = &map[PSX_MAP_CODE_BUFFER]; |
d16005f8 | 1623 | struct lightrec_state *state; |
02487de7 PC |
1624 | uintptr_t addr; |
1625 | void *tlsf = NULL; | |
1626 | bool with_32bit_lut = false; | |
1627 | size_t lut_size; | |
d16005f8 PC |
1628 | |
1629 | /* Sanity-check ops */ | |
98fa08a5 | 1630 | if (!ops || !ops->cop2_op || !ops->enable_ram) { |
d16005f8 PC |
1631 | pr_err("Missing callbacks in lightrec_ops structure\n"); |
1632 | return NULL; | |
1633 | } | |
1634 | ||
d8b04acd PC |
1635 | if (ENABLE_CODE_BUFFER && nb > PSX_MAP_CODE_BUFFER |
1636 | && codebuf_map->address) { | |
02487de7 PC |
1637 | tlsf = tlsf_create_with_pool(codebuf_map->address, |
1638 | codebuf_map->length); | |
1639 | if (!tlsf) { | |
1640 | pr_err("Unable to initialize code buffer\n"); | |
1641 | return NULL; | |
1642 | } | |
1643 | ||
1644 | if (__WORDSIZE == 64) { | |
1645 | addr = (uintptr_t) codebuf_map->address + codebuf_map->length - 1; | |
1646 | with_32bit_lut = addr == (u32) addr; | |
1647 | } | |
1648 | } | |
1649 | ||
1650 | if (with_32bit_lut) | |
1651 | lut_size = CODE_LUT_SIZE * 4; | |
1652 | else | |
1653 | lut_size = CODE_LUT_SIZE * sizeof(void *); | |
1654 | ||
d16005f8 PC |
1655 | init_jit(argv0); |
1656 | ||
02487de7 | 1657 | state = calloc(1, sizeof(*state) + lut_size); |
d16005f8 PC |
1658 | if (!state) |
1659 | goto err_finish_jit; | |
1660 | ||
02487de7 PC |
1661 | lightrec_register(MEM_FOR_LIGHTREC, sizeof(*state) + lut_size); |
1662 | ||
1663 | state->tlsf = tlsf; | |
1664 | state->with_32bit_lut = with_32bit_lut; | |
d16005f8 | 1665 | |
d16005f8 PC |
1666 | state->block_cache = lightrec_blockcache_init(state); |
1667 | if (!state->block_cache) | |
d8b04acd | 1668 | goto err_free_state; |
d16005f8 | 1669 | |
d16005f8 PC |
1670 | if (ENABLE_THREADED_COMPILER) { |
1671 | state->rec = lightrec_recompiler_init(state); | |
1672 | if (!state->rec) | |
98fa08a5 | 1673 | goto err_free_block_cache; |
a59e5536 | 1674 | |
1675 | state->reaper = lightrec_reaper_init(state); | |
1676 | if (!state->reaper) | |
1677 | goto err_free_recompiler; | |
98fa08a5 PC |
1678 | } else { |
1679 | state->cstate = lightrec_create_cstate(state); | |
1680 | if (!state->cstate) | |
1681 | goto err_free_block_cache; | |
d16005f8 PC |
1682 | } |
1683 | ||
1684 | state->nb_maps = nb; | |
1685 | state->maps = map; | |
1686 | ||
1687 | memcpy(&state->ops, ops, sizeof(*ops)); | |
1688 | ||
1689 | state->dispatcher = generate_dispatcher(state); | |
1690 | if (!state->dispatcher) | |
a59e5536 | 1691 | goto err_free_reaper; |
d16005f8 | 1692 | |
98fa08a5 PC |
1693 | state->c_wrapper_block = generate_wrapper(state); |
1694 | if (!state->c_wrapper_block) | |
d16005f8 PC |
1695 | goto err_free_dispatcher; |
1696 | ||
98fa08a5 PC |
1697 | state->c_wrappers[C_WRAPPER_RW] = lightrec_rw_cb; |
1698 | state->c_wrappers[C_WRAPPER_RW_GENERIC] = lightrec_rw_generic_cb; | |
98fa08a5 | 1699 | state->c_wrappers[C_WRAPPER_MTC] = lightrec_mtc_cb; |
22eee2ac | 1700 | state->c_wrappers[C_WRAPPER_CP] = lightrec_cp_cb; |
98fa08a5 PC |
1701 | state->c_wrappers[C_WRAPPER_SYSCALL] = lightrec_syscall_cb; |
1702 | state->c_wrappers[C_WRAPPER_BREAK] = lightrec_break_cb; | |
d16005f8 PC |
1703 | |
1704 | map = &state->maps[PSX_MAP_BIOS]; | |
1705 | state->offset_bios = (uintptr_t)map->address - map->pc; | |
1706 | ||
1707 | map = &state->maps[PSX_MAP_SCRATCH_PAD]; | |
1708 | state->offset_scratch = (uintptr_t)map->address - map->pc; | |
1709 | ||
1710 | map = &state->maps[PSX_MAP_KERNEL_USER_RAM]; | |
1711 | state->offset_ram = (uintptr_t)map->address - map->pc; | |
1712 | ||
1713 | if (state->maps[PSX_MAP_MIRROR1].address == map->address + 0x200000 && | |
1714 | state->maps[PSX_MAP_MIRROR2].address == map->address + 0x400000 && | |
1715 | state->maps[PSX_MAP_MIRROR3].address == map->address + 0x600000) | |
1716 | state->mirrors_mapped = true; | |
1717 | ||
98fa08a5 PC |
1718 | if (state->offset_bios == 0 && |
1719 | state->offset_scratch == 0 && | |
1720 | state->offset_ram == 0 && | |
1721 | state->mirrors_mapped) { | |
1722 | pr_info("Memory map is perfect. Emitted code will be best.\n"); | |
1723 | } else { | |
1724 | pr_info("Memory map is sub-par. Emitted code will be slow.\n"); | |
1725 | } | |
1726 | ||
02487de7 PC |
1727 | if (state->with_32bit_lut) |
1728 | pr_info("Using 32-bit LUT\n"); | |
1729 | ||
d16005f8 PC |
1730 | return state; |
1731 | ||
d16005f8 | 1732 | err_free_dispatcher: |
98fa08a5 | 1733 | lightrec_free_block(state, state->dispatcher); |
a59e5536 | 1734 | err_free_reaper: |
1735 | if (ENABLE_THREADED_COMPILER) | |
1736 | lightrec_reaper_destroy(state->reaper); | |
d16005f8 PC |
1737 | err_free_recompiler: |
1738 | if (ENABLE_THREADED_COMPILER) | |
1739 | lightrec_free_recompiler(state->rec); | |
98fa08a5 PC |
1740 | else |
1741 | lightrec_free_cstate(state->cstate); | |
d16005f8 PC |
1742 | err_free_block_cache: |
1743 | lightrec_free_block_cache(state->block_cache); | |
d16005f8 | 1744 | err_free_state: |
d16005f8 | 1745 | lightrec_unregister(MEM_FOR_LIGHTREC, sizeof(*state) + |
02487de7 | 1746 | lut_elm_size(state) * CODE_LUT_SIZE); |
d16005f8 PC |
1747 | free(state); |
1748 | err_finish_jit: | |
1749 | finish_jit(); | |
02487de7 PC |
1750 | if (ENABLE_CODE_BUFFER && tlsf) |
1751 | tlsf_destroy(tlsf); | |
d16005f8 PC |
1752 | return NULL; |
1753 | } | |
1754 | ||
1755 | void lightrec_destroy(struct lightrec_state *state) | |
1756 | { | |
98fa08a5 PC |
1757 | /* Force a print info on destroy*/ |
1758 | state->current_cycle = ~state->current_cycle; | |
1759 | lightrec_print_info(state); | |
1760 | ||
a59e5536 | 1761 | if (ENABLE_THREADED_COMPILER) { |
d16005f8 | 1762 | lightrec_free_recompiler(state->rec); |
a59e5536 | 1763 | lightrec_reaper_destroy(state->reaper); |
98fa08a5 PC |
1764 | } else { |
1765 | lightrec_free_cstate(state->cstate); | |
a59e5536 | 1766 | } |
d16005f8 | 1767 | |
d16005f8 | 1768 | lightrec_free_block_cache(state->block_cache); |
98fa08a5 PC |
1769 | lightrec_free_block(state, state->dispatcher); |
1770 | lightrec_free_block(state, state->c_wrapper_block); | |
d16005f8 | 1771 | finish_jit(); |
02487de7 PC |
1772 | if (ENABLE_CODE_BUFFER && state->tlsf) |
1773 | tlsf_destroy(state->tlsf); | |
d16005f8 | 1774 | |
d16005f8 | 1775 | lightrec_unregister(MEM_FOR_LIGHTREC, sizeof(*state) + |
02487de7 | 1776 | lut_elm_size(state) * CODE_LUT_SIZE); |
d16005f8 PC |
1777 | free(state); |
1778 | } | |
1779 | ||
1780 | void lightrec_invalidate(struct lightrec_state *state, u32 addr, u32 len) | |
1781 | { | |
1782 | u32 kaddr = kunseg(addr & ~0x3); | |
d8b04acd | 1783 | enum psx_map idx = lightrec_get_map_idx(state, kaddr); |
d16005f8 | 1784 | |
d8b04acd PC |
1785 | switch (idx) { |
1786 | case PSX_MAP_MIRROR1: | |
1787 | case PSX_MAP_MIRROR2: | |
1788 | case PSX_MAP_MIRROR3: | |
d16005f8 | 1789 | /* Handle mirrors */ |
d8b04acd PC |
1790 | kaddr &= RAM_SIZE - 1; |
1791 | fallthrough; | |
1792 | case PSX_MAP_KERNEL_USER_RAM: | |
1793 | break; | |
1794 | default: | |
1795 | return; | |
d16005f8 | 1796 | } |
d8b04acd PC |
1797 | |
1798 | memset(lut_address(state, lut_offset(kaddr)), 0, | |
1799 | ((len + 3) / 4) * lut_elm_size(state)); | |
d16005f8 PC |
1800 | } |
1801 | ||
1802 | void lightrec_invalidate_all(struct lightrec_state *state) | |
1803 | { | |
02487de7 | 1804 | memset(state->code_lut, 0, lut_elm_size(state) * CODE_LUT_SIZE); |
d16005f8 PC |
1805 | } |
1806 | ||
1807 | void lightrec_set_invalidate_mode(struct lightrec_state *state, bool dma_only) | |
1808 | { | |
1809 | if (state->invalidate_from_dma_only != dma_only) | |
1810 | lightrec_invalidate_all(state); | |
1811 | ||
1812 | state->invalidate_from_dma_only = dma_only; | |
1813 | } | |
1814 | ||
1815 | void lightrec_set_exit_flags(struct lightrec_state *state, u32 flags) | |
1816 | { | |
1817 | if (flags != LIGHTREC_EXIT_NORMAL) { | |
1818 | state->exit_flags |= flags; | |
1819 | state->target_cycle = state->current_cycle; | |
1820 | } | |
1821 | } | |
1822 | ||
1823 | u32 lightrec_exit_flags(struct lightrec_state *state) | |
1824 | { | |
1825 | return state->exit_flags; | |
1826 | } | |
1827 | ||
d16005f8 PC |
1828 | u32 lightrec_current_cycle_count(const struct lightrec_state *state) |
1829 | { | |
1830 | return state->current_cycle; | |
1831 | } | |
1832 | ||
1833 | void lightrec_reset_cycle_count(struct lightrec_state *state, u32 cycles) | |
1834 | { | |
1835 | state->current_cycle = cycles; | |
1836 | ||
1837 | if (state->target_cycle < cycles) | |
1838 | state->target_cycle = cycles; | |
1839 | } | |
1840 | ||
1841 | void lightrec_set_target_cycle_count(struct lightrec_state *state, u32 cycles) | |
1842 | { | |
1843 | if (state->exit_flags == LIGHTREC_EXIT_NORMAL) { | |
1844 | if (cycles < state->current_cycle) | |
1845 | cycles = state->current_cycle; | |
1846 | ||
1847 | state->target_cycle = cycles; | |
1848 | } | |
1849 | } | |
98fa08a5 PC |
1850 | |
1851 | struct lightrec_registers * lightrec_get_registers(struct lightrec_state *state) | |
1852 | { | |
1853 | return &state->regs; | |
1854 | } |