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Merge pull request #718 from pcercuei/update-lightrec-20230224
[pcsx_rearmed.git] / deps / lightrec / emitter.c
CommitLineData
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"
7#include "debug.h"
8#include "disassembler.h"
9#include "emitter.h"
98fa08a5 10#include "lightning-wrapper.h"
d16005f8
PC		 11#include "optimizer.h"
12#include "regcache.h"
13
d16005f8
PC		 14#include <stdbool.h>
15#include <stddef.h>
16
98fa08a5 17typedef void (*lightrec_rec_func_t)(struct lightrec_cstate *, const struct block *, u16);
d16005f8
PC		 18
19/* Forward declarations */
98fa08a5
PC		 20static void rec_SPECIAL(struct lightrec_cstate *state, const struct block *block, u16 offset);
21static void rec_REGIMM(struct lightrec_cstate *state, const struct block *block, u16 offset);
22static void rec_CP0(struct lightrec_cstate *state, const struct block *block, u16 offset);
23static void rec_CP2(struct lightrec_cstate *state, const struct block *block, u16 offset);
cb72ea13 24static void rec_META(struct lightrec_cstate *state, const struct block *block, u16 offset);
9259d748
PC		 25static void rec_cp2_do_mtc2(struct lightrec_cstate *state,
26 const struct block *block, u16 offset, u8 reg, u8 in_reg);
27static void rec_cp2_do_mfc2(struct lightrec_cstate *state,
28 const struct block *block, u16 offset,
29 u8 reg, u8 out_reg);
d16005f8 30
98fa08a5 31static void unknown_opcode(struct lightrec_cstate *state, const struct block *block, u16 offset)
d16005f8 32{
98fa08a5
PC		 33 pr_warn("Unknown opcode: 0x%08x at PC 0x%08x\n",
34 block->opcode_list[offset].c.opcode,
35 block->pc + (offset << 2));
d16005f8
PC		 36}
37
ba3814c1 38static void
cb72ea13 39lightrec_jump_to_fn(jit_state_t *_jit, void (*fn)(void))
ba3814c1
PC		 40{
41 /* Prevent jit_jmpi() from using our cycles register as a temporary */
42 jit_live(LIGHTREC_REG_CYCLE);
43
cb72ea13
PC		 44 jit_patch_abs(jit_jmpi(), fn);
45}
46
47static void
48lightrec_jump_to_eob(struct lightrec_cstate *state, jit_state_t *_jit)
49{
50 lightrec_jump_to_fn(_jit, state->state->eob_wrapper_func);
51}
52
53static void
54lightrec_jump_to_ds_check(struct lightrec_cstate *state, jit_state_t *_jit)
55{
56 lightrec_jump_to_fn(_jit, state->state->ds_check_func);
ba3814c1
PC		 57}
58
9259d748
PC		 59static void update_ra_register(struct regcache *reg_cache, jit_state_t *_jit,
60 u8 ra_reg, u32 pc, u32 link)
61{
62 u8 link_reg;
63
64 link_reg = lightrec_alloc_reg_out(reg_cache, _jit, ra_reg, 0);
65 lightrec_load_imm(reg_cache, _jit, link_reg, pc, link);
66 lightrec_free_reg(reg_cache, link_reg);
67}
68
98fa08a5
PC		 69static void lightrec_emit_end_of_block(struct lightrec_cstate *state,
70 const struct block *block, u16 offset,
d16005f8
PC		 71 s8 reg_new_pc, u32 imm, u8 ra_reg,
72 u32 link, bool update_cycles)
73{
d16005f8 74 struct regcache *reg_cache = state->reg_cache;
d16005f8 75 jit_state_t *_jit = block->_jit;
98fa08a5 76 const struct opcode *op = &block->opcode_list[offset],
cb72ea13 77 *ds = get_delay_slot(block->opcode_list, offset);
03535202 78 u32 cycles = state->cycles + lightrec_cycles_of_opcode(op->c);
d16005f8
PC		 79
80 jit_note(__FILE__, __LINE__);
81
9259d748
PC		 82 if (link && ra_reg != reg_new_pc)
83 update_ra_register(reg_cache, _jit, ra_reg, block->pc, link);
d16005f8 84
9259d748
PC		 85 if (reg_new_pc < 0)
86 lightrec_load_next_pc_imm(reg_cache, _jit, block->pc, imm);
87 else
88 lightrec_load_next_pc(reg_cache, _jit, reg_new_pc);
d16005f8 89
9259d748
PC		 90 if (link && ra_reg == reg_new_pc) {
91 /* Handle the special case: JALR $r0, $r0
92 * In that case the target PC should be the old value of the
93 * register. */
94 update_ra_register(reg_cache, _jit, ra_reg, block->pc, link);
d16005f8
PC		 95 }
96
97 if (has_delay_slot(op->c) &&
03535202 98 !op_flag_no_ds(op->flags) && !op_flag_local_branch(op->flags)) {
cb72ea13 99 cycles += lightrec_cycles_of_opcode(ds->c);
d16005f8
PC		 100
101 /* Recompile the delay slot */
cb72ea13 102 if (ds->c.opcode)
98fa08a5 103 lightrec_rec_opcode(state, block, offset + 1);
d16005f8
PC		 104 }
105
03535202
PC		 106 /* Clean the remaining registers */
107 lightrec_clean_regs(reg_cache, _jit);
d16005f8 108
d16005f8
PC		 109 if (cycles && update_cycles) {
110 jit_subi(LIGHTREC_REG_CYCLE, LIGHTREC_REG_CYCLE, cycles);
111 pr_debug("EOB: %u cycles\n", cycles);
112 }
113
cb72ea13
PC		 114 if (op_flag_load_delay(ds->flags)
115 && opcode_is_load(ds->c) && !state->no_load_delay) {
116 /* If the delay slot is a load opcode, its target register
117 * will be written after the first opcode of the target is
118 * executed. Handle this by jumping to a special section of
119 * the dispatcher. It expects the loaded value to be in
120 * REG_TEMP, and the target register number to be in JIT_V1.*/
121 jit_movi(JIT_V1, ds->c.i.rt);
122
123 lightrec_jump_to_ds_check(state, _jit);
124 } else {
125 lightrec_jump_to_eob(state, _jit);
126 }
d16005f8
PC		 127}
128
cb72ea13
PC		 129void lightrec_emit_jump_to_interpreter(struct lightrec_cstate *state,
130 const struct block *block, u16 offset)
131{
132 struct regcache *reg_cache = state->reg_cache;
133 jit_state_t *_jit = block->_jit;
134
135 lightrec_clean_regs(reg_cache, _jit);
136
137 /* Call the interpreter with the block's address in JIT_V1 and the
138 * PC (which might have an offset) in JIT_V0. */
139 lightrec_load_imm(reg_cache, _jit, JIT_V0, block->pc,
140 block->pc + (offset << 2));
141 jit_movi(JIT_V1, (uintptr_t)block);
142
143 jit_subi(LIGHTREC_REG_CYCLE, LIGHTREC_REG_CYCLE, state->cycles);
144 lightrec_jump_to_fn(_jit, state->state->interpreter_func);
145}
146
147static void lightrec_emit_eob(struct lightrec_cstate *state,
148 const struct block *block, u16 offset)
d16005f8 149{
d16005f8
PC		 150 struct regcache *reg_cache = state->reg_cache;
151 jit_state_t *_jit = block->_jit;
152
03535202 153 lightrec_clean_regs(reg_cache, _jit);
d16005f8 154
9259d748
PC		 155 lightrec_load_imm(reg_cache, _jit, JIT_V0, block->pc,
156 block->pc + (offset << 2));
13b02197 157 jit_subi(LIGHTREC_REG_CYCLE, LIGHTREC_REG_CYCLE, state->cycles);
d16005f8 158
ba3814c1 159 lightrec_jump_to_eob(state, _jit);
d16005f8
PC		 160}
161
98fa08a5 162static void rec_special_JR(struct lightrec_cstate *state, const struct block *block, u16 offset)
d16005f8 163{
9259d748 164 union code c = block->opcode_list[offset].c;
d16005f8
PC		 165
166 _jit_name(block->_jit, __func__);
9259d748 167 lightrec_emit_end_of_block(state, block, offset, c.r.rs, 0, 31, 0, true);
98fa08a5
PC		 168}
169
170static void rec_special_JALR(struct lightrec_cstate *state, const struct block *block, u16 offset)
171{
98fa08a5
PC		 172 union code c = block->opcode_list[offset].c;
173
174 _jit_name(block->_jit, __func__);
9259d748 175 lightrec_emit_end_of_block(state, block, offset, c.r.rs, 0, c.r.rd,
98fa08a5 176 get_branch_pc(block, offset, 2), true);
d16005f8
PC		 177}
178
98fa08a5 179static void rec_J(struct lightrec_cstate *state, const struct block *block, u16 offset)
d16005f8 180{
98fa08a5
PC		 181 union code c = block->opcode_list[offset].c;
182
d16005f8 183 _jit_name(block->_jit, __func__);
98fa08a5
PC		 184 lightrec_emit_end_of_block(state, block, offset, -1,
185 (block->pc & 0xf0000000) | (c.j.imm << 2),
186 31, 0, true);
d16005f8
PC		 187}
188
98fa08a5 189static void rec_JAL(struct lightrec_cstate *state, const struct block *block, u16 offset)
d16005f8 190{
98fa08a5
PC		 191 union code c = block->opcode_list[offset].c;
192
d16005f8 193 _jit_name(block->_jit, __func__);
98fa08a5
PC		 194 lightrec_emit_end_of_block(state, block, offset, -1,
195 (block->pc & 0xf0000000) | (c.j.imm << 2),
196 31, get_branch_pc(block, offset, 2), true);
d16005f8
PC		 197}
198
03535202
PC		 199static void lightrec_do_early_unload(struct lightrec_cstate *state,
200 const struct block *block, u16 offset)
201{
202 struct regcache *reg_cache = state->reg_cache;
203 const struct opcode *op = &block->opcode_list[offset];
204 jit_state_t *_jit = block->_jit;
205 unsigned int i;
206 u8 reg;
207 struct {
208 u8 reg, op;
209 } reg_ops[3] = {
210 { op->r.rd, LIGHTREC_FLAGS_GET_RD(op->flags), },
211 { op->i.rt, LIGHTREC_FLAGS_GET_RT(op->flags), },
212 { op->i.rs, LIGHTREC_FLAGS_GET_RS(op->flags), },
213 };
214
215 for (i = 0; i < ARRAY_SIZE(reg_ops); i++) {
216 reg = reg_ops[i].reg;
217
218 switch (reg_ops[i].op) {
219 case LIGHTREC_REG_UNLOAD:
220 lightrec_clean_reg_if_loaded(reg_cache, _jit, reg, true);
221 break;
222
223 case LIGHTREC_REG_DISCARD:
224 lightrec_discard_reg_if_loaded(reg_cache, reg);
225 break;
226
227 case LIGHTREC_REG_CLEAN:
228 lightrec_clean_reg_if_loaded(reg_cache, _jit, reg, false);
229 break;
230 default:
231 break;
232 };
233 }
234}
235
98fa08a5 236static void rec_b(struct lightrec_cstate *state, const struct block *block, u16 offset,
ba3814c1 237 jit_code_t code, jit_code_t code2, u32 link, bool unconditional, bool bz)
d16005f8 238{
98fa08a5 239 struct regcache *reg_cache = state->reg_cache;
d16005f8
PC		 240 struct native_register *regs_backup;
241 jit_state_t *_jit = block->_jit;
242 struct lightrec_branch *branch;
98fa08a5 243 const struct opcode *op = &block->opcode_list[offset],
cb72ea13 244 *ds = get_delay_slot(block->opcode_list, offset);
d16005f8 245 jit_node_t *addr;
cb72ea13 246 bool is_forward = (s16)op->i.imm >= 0;
03535202
PC		 247 int op_cycles = lightrec_cycles_of_opcode(op->c);
248 u32 target_offset, cycles = state->cycles + op_cycles;
ba3814c1 249 bool no_indirection = false;
98fa08a5 250 u32 next_pc;
9259d748 251 u8 rs, rt;
d16005f8
PC		 252
253 jit_note(__FILE__, __LINE__);
254
03535202 255 if (!op_flag_no_ds(op->flags))
cb72ea13 256 cycles += lightrec_cycles_of_opcode(ds->c);
d16005f8 257
03535202
PC		 258 state->cycles = -op_cycles;
259
260 if (!unconditional) {
261 rs = lightrec_alloc_reg_in(reg_cache, _jit, op->i.rs, REG_EXT);
262 rt = bz ? 0 : lightrec_alloc_reg_in(reg_cache,
263 _jit, op->i.rt, REG_EXT);
264
265 /* Unload dead registers before evaluating the branch */
266 if (OPT_EARLY_UNLOAD)
267 lightrec_do_early_unload(state, block, offset);
ba3814c1
PC		 268
269 if (op_flag_local_branch(op->flags) &&
cb72ea13 270 (op_flag_no_ds(op->flags) || !ds->opcode) &&
ba3814c1
PC		 271 is_forward && !lightrec_has_dirty_regs(reg_cache))
272 no_indirection = true;
273
274 if (no_indirection)
275 pr_debug("Using no indirection for branch at offset 0x%hx\n", offset << 2);
03535202 276 }
d16005f8
PC		 277
278 if (cycles)
279 jit_subi(LIGHTREC_REG_CYCLE, LIGHTREC_REG_CYCLE, cycles);
280
281 if (!unconditional) {
d16005f8 282 /* Generate the branch opcode */
ba3814c1
PC		 283 if (!no_indirection)
284 addr = jit_new_node_pww(code, NULL, rs, rt);
d16005f8
PC		 285
286 lightrec_free_regs(reg_cache);
287 regs_backup = lightrec_regcache_enter_branch(reg_cache);
288 }
289
03535202
PC		 290 if (op_flag_local_branch(op->flags)) {
291 /* Recompile the delay slot */
cb72ea13
PC		 292 if (!op_flag_no_ds(op->flags) && ds->opcode) {
293 /* Never handle load delays with local branches. */
294 state->no_load_delay = true;
03535202 295 lightrec_rec_opcode(state, block, offset + 1);
cb72ea13 296 }
d16005f8 297
9259d748
PC		 298 if (link)
299 update_ra_register(reg_cache, _jit, 31, block->pc, link);
d16005f8 300
03535202
PC		 301 /* Clean remaining registers */
302 lightrec_clean_regs(reg_cache, _jit);
d16005f8 303
98fa08a5 304 target_offset = offset + 1 + (s16)op->i.imm
03535202 305 - !!op_flag_no_ds(op->flags);
98fa08a5
PC		 306 pr_debug("Adding local branch to offset 0x%x\n",
307 target_offset << 2);
308 branch = &state->local_branches[
309 state->nb_local_branches++];
d16005f8 310
98fa08a5 311 branch->target = target_offset;
ba3814c1
PC		 312
313 if (no_indirection)
314 branch->branch = jit_new_node_pww(code2, NULL, rs, rt);
315 else if (is_forward)
22eee2ac 316 branch->branch = jit_b();
d16005f8
PC		 317 else
318 branch->branch = jit_bgti(LIGHTREC_REG_CYCLE, 0);
319 }
320
03535202 321 if (!op_flag_local_branch(op->flags) || !is_forward) {
98fa08a5 322 next_pc = get_branch_pc(block, offset, 1 + (s16)op->i.imm);
cb72ea13 323 state->no_load_delay = op_flag_local_branch(op->flags);
98fa08a5 324 lightrec_emit_end_of_block(state, block, offset, -1, next_pc,
d16005f8
PC		 325 31, link, false);
326 }
327
328 if (!unconditional) {
ba3814c1
PC		 329 if (!no_indirection)
330 jit_patch(addr);
331
d16005f8
PC		 332 lightrec_regcache_leave_branch(reg_cache, regs_backup);
333
9259d748
PC		 334 if (bz && link)
335 update_ra_register(reg_cache, _jit, 31, block->pc, link);
d16005f8 336
cb72ea13
PC		 337 if (!op_flag_no_ds(op->flags) && ds->opcode) {
338 state->no_load_delay = true;
98fa08a5 339 lightrec_rec_opcode(state, block, offset + 1);
cb72ea13 340 }
d16005f8
PC		 341 }
342}
343
98fa08a5
PC		 344static void rec_BNE(struct lightrec_cstate *state,
345 const struct block *block, u16 offset)
d16005f8 346{
98fa08a5
PC		 347 union code c = block->opcode_list[offset].c;
348
d16005f8 349 _jit_name(block->_jit, __func__);
98fa08a5
PC		 350
351 if (c.i.rt == 0)
ba3814c1 352 rec_b(state, block, offset, jit_code_beqi, jit_code_bnei, 0, false, true);
98fa08a5 353 else
ba3814c1 354 rec_b(state, block, offset, jit_code_beqr, jit_code_bner, 0, false, false);
d16005f8
PC		 355}
356
98fa08a5
PC		 357static void rec_BEQ(struct lightrec_cstate *state,
358 const struct block *block, u16 offset)
d16005f8 359{
98fa08a5
PC		 360 union code c = block->opcode_list[offset].c;
361
d16005f8 362 _jit_name(block->_jit, __func__);
98fa08a5
PC		 363
364 if (c.i.rt == 0)
ba3814c1 365 rec_b(state, block, offset, jit_code_bnei, jit_code_beqi, 0, c.i.rs == 0, true);
98fa08a5 366 else
ba3814c1 367 rec_b(state, block, offset, jit_code_bner, jit_code_beqr, 0, c.i.rs == c.i.rt, false);
d16005f8
PC		 368}
369
98fa08a5
PC		 370static void rec_BLEZ(struct lightrec_cstate *state,
371 const struct block *block, u16 offset)
d16005f8 372{
98fa08a5
PC		 373 union code c = block->opcode_list[offset].c;
374
d16005f8 375 _jit_name(block->_jit, __func__);
ba3814c1 376 rec_b(state, block, offset, jit_code_bgti, jit_code_blei, 0, c.i.rs == 0, true);
d16005f8
PC		 377}
378
98fa08a5
PC		 379static void rec_BGTZ(struct lightrec_cstate *state,
380 const struct block *block, u16 offset)
d16005f8
PC		 381{
382 _jit_name(block->_jit, __func__);
ba3814c1 383 rec_b(state, block, offset, jit_code_blei, jit_code_bgti, 0, false, true);
d16005f8
PC		 384}
385
98fa08a5
PC		 386static void rec_regimm_BLTZ(struct lightrec_cstate *state,
387 const struct block *block, u16 offset)
d16005f8
PC		 388{
389 _jit_name(block->_jit, __func__);
ba3814c1 390 rec_b(state, block, offset, jit_code_bgei, jit_code_blti, 0, false, true);
d16005f8
PC		 391}
392
98fa08a5
PC		 393static void rec_regimm_BLTZAL(struct lightrec_cstate *state,
394 const struct block *block, u16 offset)
d16005f8
PC		 395{
396 _jit_name(block->_jit, __func__);
ba3814c1 397 rec_b(state, block, offset, jit_code_bgei, jit_code_blti,
98fa08a5 398 get_branch_pc(block, offset, 2), false, true);
d16005f8
PC		 399}
400
98fa08a5
PC		 401static void rec_regimm_BGEZ(struct lightrec_cstate *state,
402 const struct block *block, u16 offset)
d16005f8 403{
98fa08a5
PC		 404 union code c = block->opcode_list[offset].c;
405
d16005f8 406 _jit_name(block->_jit, __func__);
ba3814c1 407 rec_b(state, block, offset, jit_code_blti, jit_code_bgei, 0, !c.i.rs, true);
d16005f8
PC		 408}
409
98fa08a5
PC		 410static void rec_regimm_BGEZAL(struct lightrec_cstate *state,
411 const struct block *block, u16 offset)
d16005f8 412{
98fa08a5 413 const struct opcode *op = &block->opcode_list[offset];
d16005f8 414 _jit_name(block->_jit, __func__);
ba3814c1 415 rec_b(state, block, offset, jit_code_blti, jit_code_bgei,
98fa08a5
PC		 416 get_branch_pc(block, offset, 2),
417 !op->i.rs, true);
d16005f8
PC		 418}
419
98fa08a5
PC		 420static void rec_alu_imm(struct lightrec_cstate *state, const struct block *block,
421 u16 offset, jit_code_t code, bool slti)
d16005f8 422{
98fa08a5
PC		 423 struct regcache *reg_cache = state->reg_cache;
424 union code c = block->opcode_list[offset].c;
d16005f8 425 jit_state_t *_jit = block->_jit;
98fa08a5
PC		 426 u8 rs, rt, out_flags = REG_EXT;
427
428 if (slti)
429 out_flags |= REG_ZEXT;
d16005f8
PC		 430
431 jit_note(__FILE__, __LINE__);
98fa08a5
PC		 432 rs = lightrec_alloc_reg_in(reg_cache, _jit, c.i.rs, REG_EXT);
433 rt = lightrec_alloc_reg_out(reg_cache, _jit, c.i.rt, out_flags);
d16005f8 434
98fa08a5 435 jit_new_node_www(code, rt, rs, (s32)(s16) c.i.imm);
d16005f8
PC		 436
437 lightrec_free_reg(reg_cache, rs);
438 lightrec_free_reg(reg_cache, rt);
439}
440
98fa08a5
PC		 441static void rec_alu_special(struct lightrec_cstate *state, const struct block *block,
442 u16 offset, jit_code_t code, bool out_ext)
d16005f8 443{
98fa08a5
PC		 444 struct regcache *reg_cache = state->reg_cache;
445 union code c = block->opcode_list[offset].c;
d16005f8
PC		 446 jit_state_t *_jit = block->_jit;
447 u8 rd, rt, rs;
448
449 jit_note(__FILE__, __LINE__);
98fa08a5
PC		 450 rs = lightrec_alloc_reg_in(reg_cache, _jit, c.r.rs, REG_EXT);
451 rt = lightrec_alloc_reg_in(reg_cache, _jit, c.r.rt, REG_EXT);
452 rd = lightrec_alloc_reg_out(reg_cache, _jit, c.r.rd,
453 out_ext ? REG_EXT | REG_ZEXT : 0);
d16005f8
PC		 454
455 jit_new_node_www(code, rd, rs, rt);
456
457 lightrec_free_reg(reg_cache, rs);
458 lightrec_free_reg(reg_cache, rt);
459 lightrec_free_reg(reg_cache, rd);
460}
461
98fa08a5
PC		 462static void rec_alu_shiftv(struct lightrec_cstate *state, const struct block *block,
463 u16 offset, jit_code_t code)
d16005f8 464{
98fa08a5
PC		 465 struct regcache *reg_cache = state->reg_cache;
466 union code c = block->opcode_list[offset].c;
d16005f8 467 jit_state_t *_jit = block->_jit;
98fa08a5 468 u8 rd, rt, rs, temp, flags = 0;
d16005f8
PC		 469
470 jit_note(__FILE__, __LINE__);
98fa08a5 471 rs = lightrec_alloc_reg_in(reg_cache, _jit, c.r.rs, 0);
d16005f8 472
98fa08a5
PC		 473 if (code == jit_code_rshr)
474 flags = REG_EXT;
475 else if (code == jit_code_rshr_u)
476 flags = REG_ZEXT;
d16005f8 477
98fa08a5
PC		 478 rt = lightrec_alloc_reg_in(reg_cache, _jit, c.r.rt, flags);
479 rd = lightrec_alloc_reg_out(reg_cache, _jit, c.r.rd, flags);
d16005f8 480
98fa08a5
PC		 481 if (rs != rd && rt != rd) {
482 jit_andi(rd, rs, 0x1f);
483 jit_new_node_www(code, rd, rt, rd);
484 } else {
485 temp = lightrec_alloc_reg_temp(reg_cache, _jit);
486 jit_andi(temp, rs, 0x1f);
d16005f8 487 jit_new_node_www(code, rd, rt, temp);
98fa08a5
PC		 488 lightrec_free_reg(reg_cache, temp);
489 }
d16005f8
PC		 490
491 lightrec_free_reg(reg_cache, rs);
d16005f8
PC		 492 lightrec_free_reg(reg_cache, rt);
493 lightrec_free_reg(reg_cache, rd);
494}
495
02487de7
PC		 496static void rec_movi(struct lightrec_cstate *state,
497 const struct block *block, u16 offset)
498{
499 struct regcache *reg_cache = state->reg_cache;
500 union code c = block->opcode_list[offset].c;
501 jit_state_t *_jit = block->_jit;
502 u16 flags = REG_EXT;
503 u8 rt;
504
505 if (!(c.i.imm & 0x8000))
506 flags |= REG_ZEXT;
507
508 rt = lightrec_alloc_reg_out(reg_cache, _jit, c.i.rt, flags);
509
510 jit_movi(rt, (s32)(s16) c.i.imm);
511
512 lightrec_free_reg(reg_cache, rt);
513}
514
98fa08a5
PC		 515static void rec_ADDIU(struct lightrec_cstate *state,
516 const struct block *block, u16 offset)
d16005f8
PC		 517{
518 _jit_name(block->_jit, __func__);
02487de7
PC		 519
520 if (block->opcode_list[offset].c.i.rs)
521 rec_alu_imm(state, block, offset, jit_code_addi, false);
522 else
523 rec_movi(state, block, offset);
d16005f8
PC		 524}
525
98fa08a5
PC		 526static void rec_ADDI(struct lightrec_cstate *state,
527 const struct block *block, u16 offset)
d16005f8
PC		 528{
529 /* TODO: Handle the exception? */
530 _jit_name(block->_jit, __func__);
02487de7 531 rec_ADDIU(state, block, offset);
d16005f8
PC		 532}
533
98fa08a5
PC		 534static void rec_SLTIU(struct lightrec_cstate *state,
535 const struct block *block, u16 offset)
d16005f8
PC		 536{
537 _jit_name(block->_jit, __func__);
98fa08a5 538 rec_alu_imm(state, block, offset, jit_code_lti_u, true);
d16005f8
PC		 539}
540
98fa08a5
PC		 541static void rec_SLTI(struct lightrec_cstate *state,
542 const struct block *block, u16 offset)
d16005f8
PC		 543{
544 _jit_name(block->_jit, __func__);
98fa08a5 545 rec_alu_imm(state, block, offset, jit_code_lti, true);
d16005f8
PC		 546}
547
98fa08a5
PC		 548static void rec_ANDI(struct lightrec_cstate *state,
549 const struct block *block, u16 offset)
d16005f8 550{
98fa08a5
PC		 551 struct regcache *reg_cache = state->reg_cache;
552 union code c = block->opcode_list[offset].c;
d16005f8
PC		 553 jit_state_t *_jit = block->_jit;
554 u8 rs, rt;
555
556 _jit_name(block->_jit, __func__);
557 jit_note(__FILE__, __LINE__);
98fa08a5
PC		 558 rs = lightrec_alloc_reg_in(reg_cache, _jit, c.i.rs, 0);
559 rt = lightrec_alloc_reg_out(reg_cache, _jit, c.i.rt,
560 REG_EXT | REG_ZEXT);
d16005f8
PC		 561
562 /* PSX code uses ANDI 0xff / ANDI 0xffff a lot, which are basically
563 * casts to uint8_t / uint16_t. */
98fa08a5 564 if (c.i.imm == 0xff)
d16005f8 565 jit_extr_uc(rt, rs);
98fa08a5 566 else if (c.i.imm == 0xffff)
d16005f8
PC		 567 jit_extr_us(rt, rs);
568 else
98fa08a5
PC		 569 jit_andi(rt, rs, (u32)(u16) c.i.imm);
570
571 lightrec_free_reg(reg_cache, rs);
572 lightrec_free_reg(reg_cache, rt);
573}
574
575static void rec_alu_or_xor(struct lightrec_cstate *state, const struct block *block,
576 u16 offset, jit_code_t code)
577{
578 struct regcache *reg_cache = state->reg_cache;
579 union code c = block->opcode_list[offset].c;
580 jit_state_t *_jit = block->_jit;
581 u8 rs, rt, flags;
582
583 jit_note(__FILE__, __LINE__);
584 rs = lightrec_alloc_reg_in(reg_cache, _jit, c.i.rs, 0);
585 rt = lightrec_alloc_reg_out(reg_cache, _jit, c.i.rt, 0);
586
587 flags = lightrec_get_reg_in_flags(reg_cache, rs);
588 lightrec_set_reg_out_flags(reg_cache, rt, flags);
589
590 jit_new_node_www(code, rt, rs, (u32)(u16) c.i.imm);
d16005f8
PC		 591
592 lightrec_free_reg(reg_cache, rs);
593 lightrec_free_reg(reg_cache, rt);
594}
595
98fa08a5
PC		 596
597static void rec_ORI(struct lightrec_cstate *state,
598 const struct block *block, u16 offset)
d16005f8
PC		 599{
600 _jit_name(block->_jit, __func__);
98fa08a5 601 rec_alu_or_xor(state, block, offset, jit_code_ori);
d16005f8
PC		 602}
603
98fa08a5
PC		 604static void rec_XORI(struct lightrec_cstate *state,
605 const struct block *block, u16 offset)
d16005f8
PC		 606{
607 _jit_name(block->_jit, __func__);
98fa08a5 608 rec_alu_or_xor(state, block, offset, jit_code_xori);
d16005f8
PC		 609}
610
98fa08a5
PC		 611static void rec_LUI(struct lightrec_cstate *state,
612 const struct block *block, u16 offset)
d16005f8 613{
98fa08a5
PC		 614 struct regcache *reg_cache = state->reg_cache;
615 union code c = block->opcode_list[offset].c;
d16005f8 616 jit_state_t *_jit = block->_jit;
98fa08a5 617 u8 rt, flags = REG_EXT;
d16005f8
PC		 618
619 jit_name(__func__);
620 jit_note(__FILE__, __LINE__);
d16005f8 621
98fa08a5
PC		 622 if (!(c.i.imm & BIT(15)))
623 flags |= REG_ZEXT;
624
625 rt = lightrec_alloc_reg_out(reg_cache, _jit, c.i.rt, flags);
626
627 jit_movi(rt, (s32)(c.i.imm << 16));
d16005f8
PC		 628
629 lightrec_free_reg(reg_cache, rt);
630}
631
98fa08a5
PC		 632static void rec_special_ADDU(struct lightrec_cstate *state,
633 const struct block *block, u16 offset)
d16005f8
PC		 634{
635 _jit_name(block->_jit, __func__);
98fa08a5 636 rec_alu_special(state, block, offset, jit_code_addr, false);
d16005f8
PC		 637}
638
98fa08a5
PC		 639static void rec_special_ADD(struct lightrec_cstate *state,
640 const struct block *block, u16 offset)
d16005f8
PC		 641{
642 /* TODO: Handle the exception? */
643 _jit_name(block->_jit, __func__);
98fa08a5 644 rec_alu_special(state, block, offset, jit_code_addr, false);
d16005f8
PC		 645}
646
98fa08a5
PC		 647static void rec_special_SUBU(struct lightrec_cstate *state,
648 const struct block *block, u16 offset)
d16005f8
PC		 649{
650 _jit_name(block->_jit, __func__);
98fa08a5 651 rec_alu_special(state, block, offset, jit_code_subr, false);
d16005f8
PC		 652}
653
98fa08a5
PC		 654static void rec_special_SUB(struct lightrec_cstate *state,
655 const struct block *block, u16 offset)
d16005f8
PC		 656{
657 /* TODO: Handle the exception? */
658 _jit_name(block->_jit, __func__);
98fa08a5 659 rec_alu_special(state, block, offset, jit_code_subr, false);
d16005f8
PC		 660}
661
98fa08a5
PC		 662static void rec_special_AND(struct lightrec_cstate *state,
663 const struct block *block, u16 offset)
d16005f8 664{
98fa08a5
PC		 665 struct regcache *reg_cache = state->reg_cache;
666 union code c = block->opcode_list[offset].c;
667 jit_state_t *_jit = block->_jit;
668 u8 rd, rt, rs, flags_rs, flags_rt, flags_rd;
669
d16005f8 670 _jit_name(block->_jit, __func__);
98fa08a5
PC		 671 jit_note(__FILE__, __LINE__);
672 rs = lightrec_alloc_reg_in(reg_cache, _jit, c.r.rs, 0);
673 rt = lightrec_alloc_reg_in(reg_cache, _jit, c.r.rt, 0);
674 rd = lightrec_alloc_reg_out(reg_cache, _jit, c.r.rd, 0);
675
676 flags_rs = lightrec_get_reg_in_flags(reg_cache, rs);
677 flags_rt = lightrec_get_reg_in_flags(reg_cache, rt);
678
679 /* Z(rd) = Z(rs) | Z(rt) */
680 flags_rd = REG_ZEXT & (flags_rs | flags_rt);
681
682 /* E(rd) = (E(rt) & Z(rt)) | (E(rs) & Z(rs)) | (E(rs) & E(rt)) */
683 if (((flags_rs & REG_EXT) && (flags_rt & REG_ZEXT)) ||
684 ((flags_rt & REG_EXT) && (flags_rs & REG_ZEXT)) ||
685 (REG_EXT & flags_rs & flags_rt))
686 flags_rd |= REG_EXT;
687
688 lightrec_set_reg_out_flags(reg_cache, rd, flags_rd);
689
690 jit_andr(rd, rs, rt);
691
692 lightrec_free_reg(reg_cache, rs);
693 lightrec_free_reg(reg_cache, rt);
694 lightrec_free_reg(reg_cache, rd);
d16005f8
PC		 695}
696
98fa08a5
PC		 697static void rec_special_or_nor(struct lightrec_cstate *state,
698 const struct block *block, u16 offset, bool nor)
699{
700 struct regcache *reg_cache = state->reg_cache;
701 union code c = block->opcode_list[offset].c;
702 jit_state_t *_jit = block->_jit;
703 u8 rd, rt, rs, flags_rs, flags_rt, flags_rd = 0;
704
705 jit_note(__FILE__, __LINE__);
706 rs = lightrec_alloc_reg_in(reg_cache, _jit, c.r.rs, 0);
707 rt = lightrec_alloc_reg_in(reg_cache, _jit, c.r.rt, 0);
708 rd = lightrec_alloc_reg_out(reg_cache, _jit, c.r.rd, 0);
709
710 flags_rs = lightrec_get_reg_in_flags(reg_cache, rs);
711 flags_rt = lightrec_get_reg_in_flags(reg_cache, rt);
712
713 /* or: Z(rd) = Z(rs) & Z(rt)
714 * nor: Z(rd) = 0 */
715 if (!nor)
716 flags_rd = REG_ZEXT & flags_rs & flags_rt;
717
6ce0b00a
PC		 718 /* E(rd) = E(rs) & E(rt) */
719 if (REG_EXT & flags_rs & flags_rt)
98fa08a5
PC		 720 flags_rd |= REG_EXT;
721
722 lightrec_set_reg_out_flags(reg_cache, rd, flags_rd);
723
724 jit_orr(rd, rs, rt);
725
726 if (nor)
727 jit_comr(rd, rd);
728
729 lightrec_free_reg(reg_cache, rs);
730 lightrec_free_reg(reg_cache, rt);
731 lightrec_free_reg(reg_cache, rd);
732}
733
734static void rec_special_OR(struct lightrec_cstate *state,
735 const struct block *block, u16 offset)
d16005f8
PC		 736{
737 _jit_name(block->_jit, __func__);
98fa08a5 738 rec_special_or_nor(state, block, offset, false);
d16005f8
PC		 739}
740
98fa08a5
PC		 741static void rec_special_NOR(struct lightrec_cstate *state,
742 const struct block *block, u16 offset)
d16005f8
PC		 743{
744 _jit_name(block->_jit, __func__);
98fa08a5 745 rec_special_or_nor(state, block, offset, true);
d16005f8
PC		 746}
747
98fa08a5
PC		 748static void rec_special_XOR(struct lightrec_cstate *state,
749 const struct block *block, u16 offset)
d16005f8 750{
98fa08a5
PC		 751 struct regcache *reg_cache = state->reg_cache;
752 union code c = block->opcode_list[offset].c;
d16005f8 753 jit_state_t *_jit = block->_jit;
98fa08a5 754 u8 rd, rt, rs, flags_rs, flags_rt, flags_rd;
d16005f8 755
98fa08a5
PC		 756 _jit_name(block->_jit, __func__);
757
758 jit_note(__FILE__, __LINE__);
759 rs = lightrec_alloc_reg_in(reg_cache, _jit, c.r.rs, 0);
760 rt = lightrec_alloc_reg_in(reg_cache, _jit, c.r.rt, 0);
761 rd = lightrec_alloc_reg_out(reg_cache, _jit, c.r.rd, 0);
d16005f8 762
98fa08a5
PC		 763 flags_rs = lightrec_get_reg_in_flags(reg_cache, rs);
764 flags_rt = lightrec_get_reg_in_flags(reg_cache, rt);
d16005f8 765
98fa08a5
PC		 766 /* Z(rd) = Z(rs) & Z(rt) */
767 flags_rd = REG_ZEXT & flags_rs & flags_rt;
768
769 /* E(rd) = E(rs) & E(rt) */
770 flags_rd |= REG_EXT & flags_rs & flags_rt;
771
772 lightrec_set_reg_out_flags(reg_cache, rd, flags_rd);
773
774 jit_xorr(rd, rs, rt);
775
776 lightrec_free_reg(reg_cache, rs);
777 lightrec_free_reg(reg_cache, rt);
d16005f8
PC		 778 lightrec_free_reg(reg_cache, rd);
779}
780
98fa08a5
PC		 781static void rec_special_SLTU(struct lightrec_cstate *state,
782 const struct block *block, u16 offset)
d16005f8
PC		 783{
784 _jit_name(block->_jit, __func__);
98fa08a5 785 rec_alu_special(state, block, offset, jit_code_ltr_u, true);
d16005f8
PC		 786}
787
98fa08a5
PC		 788static void rec_special_SLT(struct lightrec_cstate *state,
789 const struct block *block, u16 offset)
d16005f8
PC		 790{
791 _jit_name(block->_jit, __func__);
98fa08a5 792 rec_alu_special(state, block, offset, jit_code_ltr, true);
d16005f8
PC		 793}
794
98fa08a5
PC		 795static void rec_special_SLLV(struct lightrec_cstate *state,
796 const struct block *block, u16 offset)
d16005f8
PC		 797{
798 _jit_name(block->_jit, __func__);
98fa08a5 799 rec_alu_shiftv(state, block, offset, jit_code_lshr);
d16005f8
PC		 800}
801
98fa08a5
PC		 802static void rec_special_SRLV(struct lightrec_cstate *state,
803 const struct block *block, u16 offset)
d16005f8
PC		 804{
805 _jit_name(block->_jit, __func__);
98fa08a5 806 rec_alu_shiftv(state, block, offset, jit_code_rshr_u);
d16005f8
PC		 807}
808
98fa08a5
PC		 809static void rec_special_SRAV(struct lightrec_cstate *state,
810 const struct block *block, u16 offset)
d16005f8
PC		 811{
812 _jit_name(block->_jit, __func__);
98fa08a5 813 rec_alu_shiftv(state, block, offset, jit_code_rshr);
d16005f8
PC		 814}
815
98fa08a5
PC		 816static void rec_alu_shift(struct lightrec_cstate *state, const struct block *block,
817 u16 offset, jit_code_t code)
d16005f8 818{
98fa08a5
PC		 819 struct regcache *reg_cache = state->reg_cache;
820 union code c = block->opcode_list[offset].c;
d16005f8 821 jit_state_t *_jit = block->_jit;
98fa08a5 822 u8 rd, rt, flags = 0;
d16005f8
PC		 823
824 jit_note(__FILE__, __LINE__);
825
98fa08a5
PC		 826 if (code == jit_code_rshi)
827 flags = REG_EXT;
828 else if (code == jit_code_rshi_u)
829 flags = REG_ZEXT;
d16005f8 830
98fa08a5
PC		 831 rt = lightrec_alloc_reg_in(reg_cache, _jit, c.r.rt, flags);
832
833 /* Input reg is zero-extended, if we SRL at least by one bit, we know
834 * the output reg will be both zero-extended and sign-extended. */
835 if (code == jit_code_rshi_u && c.r.imm)
836 flags |= REG_EXT;
837 rd = lightrec_alloc_reg_out(reg_cache, _jit, c.r.rd, flags);
838
839 jit_new_node_www(code, rd, rt, c.r.imm);
d16005f8
PC		 840
841 lightrec_free_reg(reg_cache, rt);
842 lightrec_free_reg(reg_cache, rd);
843}
844
98fa08a5
PC		 845static void rec_special_SLL(struct lightrec_cstate *state,
846 const struct block *block, u16 offset)
d16005f8
PC		 847{
848 _jit_name(block->_jit, __func__);
98fa08a5 849 rec_alu_shift(state, block, offset, jit_code_lshi);
d16005f8
PC		 850}
851
98fa08a5
PC		 852static void rec_special_SRL(struct lightrec_cstate *state,
853 const struct block *block, u16 offset)
d16005f8
PC		 854{
855 _jit_name(block->_jit, __func__);
98fa08a5 856 rec_alu_shift(state, block, offset, jit_code_rshi_u);
d16005f8
PC		 857}
858
98fa08a5
PC		 859static void rec_special_SRA(struct lightrec_cstate *state,
860 const struct block *block, u16 offset)
d16005f8
PC		 861{
862 _jit_name(block->_jit, __func__);
98fa08a5 863 rec_alu_shift(state, block, offset, jit_code_rshi);
d16005f8
PC		 864}
865
98fa08a5
PC		 866static void rec_alu_mult(struct lightrec_cstate *state,
867 const struct block *block, u16 offset, bool is_signed)
d16005f8 868{
98fa08a5
PC		 869 struct regcache *reg_cache = state->reg_cache;
870 union code c = block->opcode_list[offset].c;
03535202 871 u32 flags = block->opcode_list[offset].flags;
98fa08a5
PC		 872 u8 reg_lo = get_mult_div_lo(c);
873 u8 reg_hi = get_mult_div_hi(c);
d16005f8 874 jit_state_t *_jit = block->_jit;
98fa08a5 875 u8 lo, hi, rs, rt, rflags = 0;
d16005f8
PC		 876
877 jit_note(__FILE__, __LINE__);
878
98fa08a5
PC		 879 if (is_signed)
880 rflags = REG_EXT;
881 else
882 rflags = REG_ZEXT;
883
884 rs = lightrec_alloc_reg_in(reg_cache, _jit, c.r.rs, rflags);
885 rt = lightrec_alloc_reg_in(reg_cache, _jit, c.r.rt, rflags);
886
03535202 887 if (!op_flag_no_lo(flags))
98fa08a5
PC		 888 lo = lightrec_alloc_reg_out(reg_cache, _jit, reg_lo, 0);
889 else if (__WORDSIZE == 32)
890 lo = lightrec_alloc_reg_temp(reg_cache, _jit);
891
03535202 892 if (!op_flag_no_hi(flags))
98fa08a5
PC		 893 hi = lightrec_alloc_reg_out(reg_cache, _jit, reg_hi, REG_EXT);
894
895 if (__WORDSIZE == 32) {
896 /* On 32-bit systems, do a 32*32->64 bit operation, or a 32*32->32 bit
897 * operation if the MULT was detected a 32-bit only. */
03535202 898 if (!op_flag_no_hi(flags)) {
98fa08a5
PC		 899 if (is_signed)
900 jit_qmulr(lo, hi, rs, rt);
901 else
902 jit_qmulr_u(lo, hi, rs, rt);
903 } else {
904 jit_mulr(lo, rs, rt);
905 }
d16005f8 906 } else {
98fa08a5 907 /* On 64-bit systems, do a 64*64->64 bit operation. */
03535202 908 if (op_flag_no_lo(flags)) {
98fa08a5
PC		 909 jit_mulr(hi, rs, rt);
910 jit_rshi(hi, hi, 32);
911 } else {
912 jit_mulr(lo, rs, rt);
d16005f8 913
98fa08a5 914 /* The 64-bit output value is in $lo, store the upper 32 bits in $hi */
03535202 915 if (!op_flag_no_hi(flags))
98fa08a5
PC		 916 jit_rshi(hi, lo, 32);
917 }
d16005f8
PC		 918 }
919
d16005f8
PC		 920 lightrec_free_reg(reg_cache, rs);
921 lightrec_free_reg(reg_cache, rt);
03535202 922 if (!op_flag_no_lo(flags) || __WORDSIZE == 32)
98fa08a5 923 lightrec_free_reg(reg_cache, lo);
03535202 924 if (!op_flag_no_hi(flags))
d16005f8
PC		 925 lightrec_free_reg(reg_cache, hi);
926}
927
98fa08a5
PC		 928static void rec_alu_div(struct lightrec_cstate *state,
929 const struct block *block, u16 offset, bool is_signed)
d16005f8 930{
98fa08a5
PC		 931 struct regcache *reg_cache = state->reg_cache;
932 union code c = block->opcode_list[offset].c;
03535202
PC		 933 u32 flags = block->opcode_list[offset].flags;
934 bool no_check = op_flag_no_div_check(flags);
98fa08a5
PC		 935 u8 reg_lo = get_mult_div_lo(c);
936 u8 reg_hi = get_mult_div_hi(c);
d16005f8
PC		 937 jit_state_t *_jit = block->_jit;
938 jit_node_t *branch, *to_end;
fd58fa32 939 u8 lo = 0, hi = 0, rs, rt, rflags = 0;
d16005f8
PC		 940
941 jit_note(__FILE__, __LINE__);
d16005f8 942
98fa08a5
PC		 943 if (is_signed)
944 rflags = REG_EXT;
945 else
946 rflags = REG_ZEXT;
947
948 rs = lightrec_alloc_reg_in(reg_cache, _jit, c.r.rs, rflags);
949 rt = lightrec_alloc_reg_in(reg_cache, _jit, c.r.rt, rflags);
950
03535202 951 if (!op_flag_no_lo(flags))
98fa08a5
PC		 952 lo = lightrec_alloc_reg_out(reg_cache, _jit, reg_lo, 0);
953
03535202 954 if (!op_flag_no_hi(flags))
98fa08a5 955 hi = lightrec_alloc_reg_out(reg_cache, _jit, reg_hi, 0);
d16005f8
PC		 956
957 /* Jump to special handler if dividing by zero */
98fa08a5
PC		 958 if (!no_check)
959 branch = jit_beqi(rt, 0);
d16005f8 960
03535202 961 if (op_flag_no_lo(flags)) {
98fa08a5
PC		 962 if (is_signed)
963 jit_remr(hi, rs, rt);
964 else
965 jit_remr_u(hi, rs, rt);
03535202 966 } else if (op_flag_no_hi(flags)) {
98fa08a5
PC		 967 if (is_signed)
968 jit_divr(lo, rs, rt);
969 else
970 jit_divr_u(lo, rs, rt);
d16005f8 971 } else {
98fa08a5
PC		 972 if (is_signed)
973 jit_qdivr(lo, hi, rs, rt);
974 else
975 jit_qdivr_u(lo, hi, rs, rt);
d16005f8 976 }
d16005f8 977
98fa08a5 978 if (!no_check) {
98fa08a5 979 /* Jump above the div-by-zero handler */
22eee2ac 980 to_end = jit_b();
d16005f8 981
98fa08a5
PC		 982 jit_patch(branch);
983
03535202 984 if (!op_flag_no_lo(flags)) {
98fa08a5 985 if (is_signed) {
9259d748 986 jit_ltr(lo, rs, rt);
98fa08a5
PC		 987 jit_lshi(lo, lo, 1);
988 jit_subi(lo, lo, 1);
989 } else {
9259d748 990 jit_subi(lo, rt, 1);
98fa08a5
PC		 991 }
992 }
d16005f8 993
03535202 994 if (!op_flag_no_hi(flags))
98fa08a5 995 jit_movr(hi, rs);
d16005f8 996
98fa08a5
PC		 997 jit_patch(to_end);
998 }
d16005f8
PC		 999
1000 lightrec_free_reg(reg_cache, rs);
1001 lightrec_free_reg(reg_cache, rt);
98fa08a5 1002
03535202 1003 if (!op_flag_no_lo(flags))
98fa08a5
PC		 1004 lightrec_free_reg(reg_cache, lo);
1005
03535202 1006 if (!op_flag_no_hi(flags))
98fa08a5 1007 lightrec_free_reg(reg_cache, hi);
d16005f8
PC		 1008}
1009
98fa08a5
PC		 1010static void rec_special_MULT(struct lightrec_cstate *state,
1011 const struct block *block, u16 offset)
d16005f8
PC		 1012{
1013 _jit_name(block->_jit, __func__);
98fa08a5 1014 rec_alu_mult(state, block, offset, true);
d16005f8
PC		 1015}
1016
98fa08a5
PC		 1017static void rec_special_MULTU(struct lightrec_cstate *state,
1018 const struct block *block, u16 offset)
d16005f8
PC		 1019{
1020 _jit_name(block->_jit, __func__);
98fa08a5 1021 rec_alu_mult(state, block, offset, false);
d16005f8
PC		 1022}
1023
98fa08a5
PC		 1024static void rec_special_DIV(struct lightrec_cstate *state,
1025 const struct block *block, u16 offset)
d16005f8
PC		 1026{
1027 _jit_name(block->_jit, __func__);
98fa08a5 1028 rec_alu_div(state, block, offset, true);
d16005f8
PC		 1029}
1030
98fa08a5
PC		 1031static void rec_special_DIVU(struct lightrec_cstate *state,
1032 const struct block *block, u16 offset)
d16005f8
PC		 1033{
1034 _jit_name(block->_jit, __func__);
98fa08a5 1035 rec_alu_div(state, block, offset, false);
d16005f8
PC		 1036}
1037
98fa08a5
PC		 1038static void rec_alu_mv_lo_hi(struct lightrec_cstate *state,
1039 const struct block *block, u8 dst, u8 src)
d16005f8 1040{
98fa08a5 1041 struct regcache *reg_cache = state->reg_cache;
d16005f8
PC		 1042 jit_state_t *_jit = block->_jit;
1043
1044 jit_note(__FILE__, __LINE__);
98fa08a5
PC		 1045 src = lightrec_alloc_reg_in(reg_cache, _jit, src, 0);
1046 dst = lightrec_alloc_reg_out(reg_cache, _jit, dst, REG_EXT);
d16005f8 1047
d16005f8 1048 jit_extr_i(dst, src);
d16005f8
PC		 1049
1050 lightrec_free_reg(reg_cache, src);
1051 lightrec_free_reg(reg_cache, dst);
1052}
1053
98fa08a5
PC		 1054static void rec_special_MFHI(struct lightrec_cstate *state,
1055 const struct block *block, u16 offset)
d16005f8 1056{
98fa08a5
PC		 1057 union code c = block->opcode_list[offset].c;
1058
d16005f8 1059 _jit_name(block->_jit, __func__);
98fa08a5 1060 rec_alu_mv_lo_hi(state, block, c.r.rd, REG_HI);
d16005f8
PC		 1061}
1062
98fa08a5
PC		 1063static void rec_special_MTHI(struct lightrec_cstate *state,
1064 const struct block *block, u16 offset)
d16005f8 1065{
98fa08a5
PC		 1066 union code c = block->opcode_list[offset].c;
1067
d16005f8 1068 _jit_name(block->_jit, __func__);
98fa08a5 1069 rec_alu_mv_lo_hi(state, block, REG_HI, c.r.rs);
d16005f8
PC		 1070}
1071
98fa08a5
PC		 1072static void rec_special_MFLO(struct lightrec_cstate *state,
1073 const struct block *block, u16 offset)
d16005f8 1074{
98fa08a5
PC		 1075 union code c = block->opcode_list[offset].c;
1076
d16005f8 1077 _jit_name(block->_jit, __func__);
98fa08a5 1078 rec_alu_mv_lo_hi(state, block, c.r.rd, REG_LO);
d16005f8
PC		 1079}
1080
98fa08a5
PC		 1081static void rec_special_MTLO(struct lightrec_cstate *state,
1082 const struct block *block, u16 offset)
d16005f8 1083{
98fa08a5
PC		 1084 union code c = block->opcode_list[offset].c;
1085
d16005f8 1086 _jit_name(block->_jit, __func__);
98fa08a5 1087 rec_alu_mv_lo_hi(state, block, REG_LO, c.r.rs);
d16005f8
PC		 1088}
1089
ba3814c1
PC		 1090static void call_to_c_wrapper(struct lightrec_cstate *state,
1091 const struct block *block, u32 arg,
1092 enum c_wrappers wrapper)
d16005f8 1093{
98fa08a5 1094 struct regcache *reg_cache = state->reg_cache;
d16005f8 1095 jit_state_t *_jit = block->_jit;
ba3814c1 1096 s8 tmp, tmp2;
d16005f8 1097
ba3814c1
PC		 1098 /* Make sure JIT_R1 is not mapped; it will be used in the C wrapper. */
1099 tmp2 = lightrec_alloc_reg(reg_cache, _jit, JIT_R1);
d16005f8 1100
ba3814c1
PC		 1101 tmp = lightrec_get_reg_with_value(reg_cache,
1102 (intptr_t) state->state->wrappers_eps[wrapper]);
1103 if (tmp < 0) {
1104 tmp = lightrec_alloc_reg_temp(reg_cache, _jit);
1105 jit_ldxi(tmp, LIGHTREC_REG_STATE,
1106 offsetof(struct lightrec_state, wrappers_eps[wrapper]));
1107
1108 lightrec_temp_set_value(reg_cache, tmp,
1109 (intptr_t) state->state->wrappers_eps[wrapper]);
22eee2ac
PC		 1110 }
1111
ba3814c1
PC		 1112 lightrec_free_reg(reg_cache, tmp2);
1113
1114#ifdef __mips__
1115 /* On MIPS, register t9 is always used as the target register for JALR.
1116 * Therefore if it does not contain the target address we must
1117 * invalidate it. */
1118 if (tmp != _T9)
1119 lightrec_unload_reg(reg_cache, _jit, _T9);
1120#endif
1121
1122 jit_prepare();
1123 jit_pushargi(arg);
1124
22eee2ac 1125 lightrec_regcache_mark_live(reg_cache, _jit);
98fa08a5 1126 jit_callr(tmp);
d16005f8 1127
98fa08a5 1128 lightrec_free_reg(reg_cache, tmp);
98fa08a5
PC		 1129 lightrec_regcache_mark_live(reg_cache, _jit);
1130}
1131
1132static void rec_io(struct lightrec_cstate *state,
1133 const struct block *block, u16 offset,
1134 bool load_rt, bool read_rt)
1135{
1136 struct regcache *reg_cache = state->reg_cache;
1137 jit_state_t *_jit = block->_jit;
1138 union code c = block->opcode_list[offset].c;
03535202 1139 u32 flags = block->opcode_list[offset].flags;
22eee2ac 1140 bool is_tagged = LIGHTREC_FLAGS_GET_IO_MODE(flags);
98fa08a5 1141 u32 lut_entry;
cb72ea13 1142 u8 zero;
d16005f8 1143
98fa08a5 1144 jit_note(__FILE__, __LINE__);
d16005f8 1145
98fa08a5
PC		 1146 lightrec_clean_reg_if_loaded(reg_cache, _jit, c.i.rs, false);
1147
1148 if (read_rt && likely(c.i.rt))
1149 lightrec_clean_reg_if_loaded(reg_cache, _jit, c.i.rt, true);
d16005f8 1150 else if (load_rt)
98fa08a5 1151 lightrec_clean_reg_if_loaded(reg_cache, _jit, c.i.rt, false);
d16005f8 1152
cb72ea13
PC		 1153 if (op_flag_load_delay(flags) && !state->no_load_delay) {
1154 /* Clear state->in_delay_slot_n. This notifies the lightrec_rw
1155 * wrapper that it should write the REG_TEMP register instead of
1156 * the actual output register of the opcode. */
1157 zero = lightrec_alloc_reg_in(reg_cache, _jit, 0, 0);
1158 jit_stxi_c(offsetof(struct lightrec_state, in_delay_slot_n),
1159 LIGHTREC_REG_STATE, zero);
1160 lightrec_free_reg(reg_cache, zero);
1161 }
1162
d16005f8 1163 if (is_tagged) {
ba3814c1 1164 call_to_c_wrapper(state, block, c.opcode, C_WRAPPER_RW);
d16005f8 1165 } else {
98fa08a5
PC		 1166 lut_entry = lightrec_get_lut_entry(block);
1167 call_to_c_wrapper(state, block, (lut_entry << 16) | offset,
ba3814c1 1168 C_WRAPPER_RW_GENERIC);
d16005f8 1169 }
d16005f8
PC		 1170}
1171
02487de7
PC		 1172static u32 rec_ram_mask(struct lightrec_state *state)
1173{
1174 return (RAM_SIZE << (state->mirrors_mapped * 2)) - 1;
1175}
1176
13b02197
PC		 1177static u32 rec_io_mask(const struct lightrec_state *state)
1178{
1179 u32 length = state->maps[PSX_MAP_HW_REGISTERS].length;
1180
1181 return GENMASK(31 - clz32(length - 1), 0);
1182}
1183
22eee2ac
PC		 1184static void rec_store_memory(struct lightrec_cstate *cstate,
1185 const struct block *block,
1186 u16 offset, jit_code_t code,
02487de7 1187 jit_code_t swap_code,
22eee2ac
PC		 1188 uintptr_t addr_offset, u32 addr_mask,
1189 bool invalidate)
1190{
02487de7 1191 const struct lightrec_state *state = cstate->state;
22eee2ac
PC		 1192 struct regcache *reg_cache = cstate->reg_cache;
1193 struct opcode *op = &block->opcode_list[offset];
1194 jit_state_t *_jit = block->_jit;
1195 union code c = op->c;
1196 u8 rs, rt, tmp, tmp2, tmp3, addr_reg, addr_reg2;
1197 s16 imm = (s16)c.i.imm;
02487de7 1198 s32 simm = (s32)imm << (1 - lut_is_32bit(state));
22eee2ac 1199 s32 lut_offt = offsetof(struct lightrec_state, code_lut);
03535202 1200 bool no_mask = op_flag_no_mask(op->flags);
02487de7
PC		 1201 bool add_imm = c.i.imm &&
1202 ((!state->mirrors_mapped && !no_mask) || (invalidate &&
1203 ((imm & 0x3) || simm + lut_offt != (s16)(simm + lut_offt))));
ba3814c1 1204 bool need_tmp = !no_mask || addr_offset || add_imm || invalidate;
9259d748 1205 bool swc2 = c.i.op == OP_SWC2;
cb72ea13 1206 u8 in_reg = swc2 ? REG_TEMP : c.i.rt;
22eee2ac 1207
9259d748 1208 rt = lightrec_alloc_reg_in(reg_cache, _jit, in_reg, 0);
22eee2ac
PC		 1209 rs = lightrec_alloc_reg_in(reg_cache, _jit, c.i.rs, 0);
1210 if (need_tmp)
1211 tmp = lightrec_alloc_reg_temp(reg_cache, _jit);
1212
1213 addr_reg = rs;
1214
1215 if (add_imm) {
1216 jit_addi(tmp, addr_reg, (s16)c.i.imm);
1217 addr_reg = tmp;
1218 imm = 0;
1219 } else if (simm) {
1220 lut_offt += simm;
1221 }
1222
1223 if (!no_mask) {
1224 jit_andi(tmp, addr_reg, addr_mask);
1225 addr_reg = tmp;
1226 }
1227
22eee2ac 1228 if (addr_offset) {
ba3814c1 1229 tmp2 = lightrec_alloc_reg_temp(reg_cache, _jit);
22eee2ac
PC		 1230 jit_addi(tmp2, addr_reg, addr_offset);
1231 addr_reg2 = tmp2;
1232 } else {
1233 addr_reg2 = addr_reg;
1234 }
1235
9259d748 1236 if (is_big_endian() && swap_code && in_reg) {
02487de7
PC		 1237 tmp3 = lightrec_alloc_reg_temp(reg_cache, _jit);
1238
1239 jit_new_node_ww(swap_code, tmp3, rt);
1240 jit_new_node_www(code, imm, addr_reg2, tmp3);
1241
1242 lightrec_free_reg(reg_cache, tmp3);
1243 } else {
1244 jit_new_node_www(code, imm, addr_reg2, rt);
1245 }
1246
22eee2ac
PC		 1247 lightrec_free_reg(reg_cache, rt);
1248
1249 if (invalidate) {
1250 tmp3 = lightrec_alloc_reg_in(reg_cache, _jit, 0, 0);
1251
1252 if (c.i.op != OP_SW) {
ba3814c1
PC		 1253 jit_andi(tmp, addr_reg, ~3);
1254 addr_reg = tmp;
22eee2ac
PC		 1255 }
1256
02487de7 1257 if (!lut_is_32bit(state)) {
ba3814c1
PC		 1258 jit_lshi(tmp, addr_reg, 1);
1259 addr_reg = tmp;
22eee2ac
PC		 1260 }
1261
02487de7
PC		 1262 if (addr_reg == rs && c.i.rs == 0) {
1263 addr_reg = LIGHTREC_REG_STATE;
1264 } else {
cb72ea13 1265 jit_add_state(tmp, addr_reg);
ba3814c1 1266 addr_reg = tmp;
22eee2ac
PC		 1267 }
1268
02487de7
PC		 1269 if (lut_is_32bit(state))
1270 jit_stxi_i(lut_offt, addr_reg, tmp3);
1271 else
1272 jit_stxi(lut_offt, addr_reg, tmp3);
22eee2ac
PC		 1273
1274 lightrec_free_reg(reg_cache, tmp3);
1275 }
1276
ba3814c1 1277 if (addr_offset)
22eee2ac
PC		 1278 lightrec_free_reg(reg_cache, tmp2);
1279 if (need_tmp)
1280 lightrec_free_reg(reg_cache, tmp);
1281 lightrec_free_reg(reg_cache, rs);
1282}
1283
1284static void rec_store_ram(struct lightrec_cstate *cstate,
1285 const struct block *block,
1286 u16 offset, jit_code_t code,
02487de7 1287 jit_code_t swap_code, bool invalidate)
22eee2ac 1288{
02487de7
PC		 1289 struct lightrec_state *state = cstate->state;
1290
22eee2ac
PC		 1291 _jit_note(block->_jit, __FILE__, __LINE__);
1292
02487de7
PC		 1293 return rec_store_memory(cstate, block, offset, code, swap_code,
1294 state->offset_ram, rec_ram_mask(state),
1295 invalidate);
22eee2ac
PC		 1296}
1297
1298static void rec_store_scratch(struct lightrec_cstate *cstate,
02487de7
PC		 1299 const struct block *block, u16 offset,
1300 jit_code_t code, jit_code_t swap_code)
22eee2ac
PC		 1301{
1302 _jit_note(block->_jit, __FILE__, __LINE__);
1303
02487de7 1304 return rec_store_memory(cstate, block, offset, code, swap_code,
22eee2ac
PC		 1305 cstate->state->offset_scratch,
1306 0x1fffffff, false);
1307}
1308
ba3814c1
PC		 1309static void rec_store_io(struct lightrec_cstate *cstate,
1310 const struct block *block, u16 offset,
1311 jit_code_t code, jit_code_t swap_code)
1312{
1313 _jit_note(block->_jit, __FILE__, __LINE__);
1314
1315 return rec_store_memory(cstate, block, offset, code, swap_code,
1316 cstate->state->offset_io,
13b02197 1317 rec_io_mask(cstate->state), false);
ba3814c1
PC		 1318}
1319
98fa08a5
PC		 1320static void rec_store_direct_no_invalidate(struct lightrec_cstate *cstate,
1321 const struct block *block,
02487de7
PC		 1322 u16 offset, jit_code_t code,
1323 jit_code_t swap_code)
d16005f8 1324{
98fa08a5
PC		 1325 struct lightrec_state *state = cstate->state;
1326 struct regcache *reg_cache = cstate->reg_cache;
1327 union code c = block->opcode_list[offset].c;
d16005f8
PC		 1328 jit_state_t *_jit = block->_jit;
1329 jit_node_t *to_not_ram, *to_end;
9259d748 1330 bool swc2 = c.i.op == OP_SWC2;
cb72ea13
PC		 1331 bool offset_ram_or_scratch = state->offset_ram || state->offset_scratch;
1332 u8 tmp, tmp2, rs, rt, in_reg = swc2 ? REG_TEMP : c.i.rt;
d16005f8
PC		 1333 s16 imm;
1334
1335 jit_note(__FILE__, __LINE__);
98fa08a5 1336 rs = lightrec_alloc_reg_in(reg_cache, _jit, c.i.rs, 0);
d16005f8 1337 tmp = lightrec_alloc_reg_temp(reg_cache, _jit);
98fa08a5 1338
cb72ea13 1339 if (offset_ram_or_scratch)
98fa08a5 1340 tmp2 = lightrec_alloc_reg_temp(reg_cache, _jit);
d16005f8
PC		 1341
1342 /* Convert to KUNSEG and avoid RAM mirrors */
1343 if (state->mirrors_mapped) {
98fa08a5 1344 imm = (s16)c.i.imm;
d16005f8 1345 jit_andi(tmp, rs, 0x1f800000 | (4 * RAM_SIZE - 1));
98fa08a5 1346 } else if (c.i.imm) {
d16005f8 1347 imm = 0;
98fa08a5 1348 jit_addi(tmp, rs, (s16)c.i.imm);
d16005f8
PC		 1349 jit_andi(tmp, tmp, 0x1f800000 | (RAM_SIZE - 1));
1350 } else {
1351 imm = 0;
1352 jit_andi(tmp, rs, 0x1f800000 | (RAM_SIZE - 1));
1353 }
1354
1355 lightrec_free_reg(reg_cache, rs);
1356
1357 if (state->offset_ram != state->offset_scratch) {
1358 to_not_ram = jit_bmsi(tmp, BIT(28));
1359
1360 jit_movi(tmp2, state->offset_ram);
1361
22eee2ac 1362 to_end = jit_b();
d16005f8
PC		 1363 jit_patch(to_not_ram);
1364
1365 jit_movi(tmp2, state->offset_scratch);
1366 jit_patch(to_end);
1367 } else if (state->offset_ram) {
1368 jit_movi(tmp2, state->offset_ram);
1369 }
1370
cb72ea13 1371 if (offset_ram_or_scratch) {
d16005f8 1372 jit_addr(tmp, tmp, tmp2);
98fa08a5
PC		 1373 lightrec_free_reg(reg_cache, tmp2);
1374 }
d16005f8 1375
9259d748 1376 rt = lightrec_alloc_reg_in(reg_cache, _jit, in_reg, 0);
ba3814c1 1377
9259d748 1378 if (is_big_endian() && swap_code && in_reg) {
02487de7
PC		 1379 tmp2 = lightrec_alloc_reg_temp(reg_cache, _jit);
1380
1381 jit_new_node_ww(swap_code, tmp2, rt);
1382 jit_new_node_www(code, imm, tmp, tmp2);
1383
1384 lightrec_free_reg(reg_cache, tmp2);
1385 } else {
1386 jit_new_node_www(code, imm, tmp, rt);
1387 }
d16005f8
PC		 1388
1389 lightrec_free_reg(reg_cache, rt);
1390 lightrec_free_reg(reg_cache, tmp);
1391}
1392
98fa08a5 1393static void rec_store_direct(struct lightrec_cstate *cstate, const struct block *block,
02487de7 1394 u16 offset, jit_code_t code, jit_code_t swap_code)
d16005f8 1395{
98fa08a5
PC		 1396 struct lightrec_state *state = cstate->state;
1397 u32 ram_size = state->mirrors_mapped ? RAM_SIZE * 4 : RAM_SIZE;
1398 struct regcache *reg_cache = cstate->reg_cache;
1399 union code c = block->opcode_list[offset].c;
d16005f8 1400 jit_state_t *_jit = block->_jit;
98fa08a5 1401 jit_node_t *to_not_ram, *to_end;
9259d748
PC		 1402 bool swc2 = c.i.op == OP_SWC2;
1403 u8 tmp, tmp2, tmp3, masked_reg, rs, rt;
cb72ea13 1404 u8 in_reg = swc2 ? REG_TEMP : c.i.rt;
d16005f8
PC		 1405
1406 jit_note(__FILE__, __LINE__);
1407
98fa08a5 1408 rs = lightrec_alloc_reg_in(reg_cache, _jit, c.i.rs, 0);
d16005f8 1409 tmp2 = lightrec_alloc_reg_temp(reg_cache, _jit);
98fa08a5 1410 tmp3 = lightrec_alloc_reg_in(reg_cache, _jit, 0, 0);
d16005f8
PC		 1411
1412 /* Convert to KUNSEG and avoid RAM mirrors */
98fa08a5
PC		 1413 if (c.i.imm) {
1414 jit_addi(tmp2, rs, (s16)c.i.imm);
1415 jit_andi(tmp2, tmp2, 0x1f800000 | (ram_size - 1));
d16005f8 1416 } else {
98fa08a5 1417 jit_andi(tmp2, rs, 0x1f800000 | (ram_size - 1));
d16005f8
PC		 1418 }
1419
1420 lightrec_free_reg(reg_cache, rs);
1421 tmp = lightrec_alloc_reg_temp(reg_cache, _jit);
1422
9259d748
PC		 1423 if (state->offset_ram != state->offset_scratch) {
1424 to_not_ram = jit_bgti(tmp2, ram_size);
1425 masked_reg = tmp2;
1426 } else {
1427 jit_lti_u(tmp, tmp2, ram_size);
1428 jit_movnr(tmp, tmp2, tmp);
1429 masked_reg = tmp;
1430 }
98fa08a5 1431
d16005f8 1432 /* Compute the offset to the code LUT */
9259d748
PC		 1433 if (c.i.op == OP_SW)
1434 jit_andi(tmp, masked_reg, RAM_SIZE - 1);
1435 else
1436 jit_andi(tmp, masked_reg, (RAM_SIZE - 1) & ~3);
1437
02487de7 1438 if (!lut_is_32bit(state))
98fa08a5 1439 jit_lshi(tmp, tmp, 1);
cb72ea13 1440 jit_add_state(tmp, tmp);
d16005f8
PC		 1441
1442 /* Write NULL to the code LUT to invalidate any block that's there */
02487de7
PC		 1443 if (lut_is_32bit(state))
1444 jit_stxi_i(offsetof(struct lightrec_state, code_lut), tmp, tmp3);
1445 else
1446 jit_stxi(offsetof(struct lightrec_state, code_lut), tmp, tmp3);
d16005f8
PC		 1447
1448 if (state->offset_ram != state->offset_scratch) {
1449 jit_movi(tmp, state->offset_ram);
1450
22eee2ac 1451 to_end = jit_b();
9259d748 1452 jit_patch(to_not_ram);
d16005f8
PC		 1453 }
1454
d16005f8
PC		 1455 if (state->offset_ram || state->offset_scratch)
1456 jit_movi(tmp, state->offset_scratch);
1457
1458 if (state->offset_ram != state->offset_scratch)
1459 jit_patch(to_end);
1460
1461 if (state->offset_ram || state->offset_scratch)
1462 jit_addr(tmp2, tmp2, tmp);
1463
1464 lightrec_free_reg(reg_cache, tmp);
1465 lightrec_free_reg(reg_cache, tmp3);
1466
9259d748 1467 rt = lightrec_alloc_reg_in(reg_cache, _jit, in_reg, 0);
02487de7 1468
9259d748 1469 if (is_big_endian() && swap_code && in_reg) {
02487de7
PC		 1470 tmp = lightrec_alloc_reg_temp(reg_cache, _jit);
1471
1472 jit_new_node_ww(swap_code, tmp, rt);
1473 jit_new_node_www(code, 0, tmp2, tmp);
1474
1475 lightrec_free_reg(reg_cache, tmp);
1476 } else {
1477 jit_new_node_www(code, 0, tmp2, rt);
1478 }
d16005f8
PC		 1479
1480 lightrec_free_reg(reg_cache, rt);
1481 lightrec_free_reg(reg_cache, tmp2);
1482}
1483
98fa08a5 1484static void rec_store(struct lightrec_cstate *state,
02487de7
PC		 1485 const struct block *block, u16 offset,
1486 jit_code_t code, jit_code_t swap_code)
d16005f8 1487{
03535202 1488 u32 flags = block->opcode_list[offset].flags;
9259d748 1489 u32 mode = LIGHTREC_FLAGS_GET_IO_MODE(flags);
03535202 1490 bool no_invalidate = op_flag_no_invalidate(flags) ||
22eee2ac 1491 state->state->invalidate_from_dma_only;
9259d748
PC		 1492 union code c = block->opcode_list[offset].c;
1493 bool is_swc2 = c.i.op == OP_SWC2;
1494
1495 if (is_swc2) {
1496 switch (mode) {
1497 case LIGHTREC_IO_RAM:
1498 case LIGHTREC_IO_SCRATCH:
1499 case LIGHTREC_IO_DIRECT:
1500 case LIGHTREC_IO_DIRECT_HW:
cb72ea13 1501 rec_cp2_do_mfc2(state, block, offset, c.i.rt, REG_TEMP);
9259d748
PC		 1502 break;
1503 default:
1504 break;
1505 }
1506 }
22eee2ac 1507
9259d748 1508 switch (mode) {
22eee2ac 1509 case LIGHTREC_IO_RAM:
02487de7
PC		 1510 rec_store_ram(state, block, offset, code,
1511 swap_code, !no_invalidate);
22eee2ac
PC		 1512 break;
1513 case LIGHTREC_IO_SCRATCH:
02487de7 1514 rec_store_scratch(state, block, offset, code, swap_code);
22eee2ac
PC		 1515 break;
1516 case LIGHTREC_IO_DIRECT:
02487de7
PC		 1517 if (no_invalidate) {
1518 rec_store_direct_no_invalidate(state, block, offset,
1519 code, swap_code);
1520 } else {
1521 rec_store_direct(state, block, offset, code, swap_code);
1522 }
22eee2ac 1523 break;
ba3814c1
PC		 1524 case LIGHTREC_IO_DIRECT_HW:
1525 rec_store_io(state, block, offset, code, swap_code);
1526 break;
22eee2ac 1527 default:
98fa08a5 1528 rec_io(state, block, offset, true, false);
9259d748 1529 return;
d16005f8 1530 }
9259d748
PC		 1531
1532 if (is_swc2)
cb72ea13 1533 lightrec_discard_reg_if_loaded(state->reg_cache, REG_TEMP);
d16005f8
PC		 1534}
1535
98fa08a5
PC		 1536static void rec_SB(struct lightrec_cstate *state,
1537 const struct block *block, u16 offset)
d16005f8
PC		 1538{
1539 _jit_name(block->_jit, __func__);
02487de7 1540 rec_store(state, block, offset, jit_code_stxi_c, 0);
d16005f8
PC		 1541}
1542
98fa08a5
PC		 1543static void rec_SH(struct lightrec_cstate *state,
1544 const struct block *block, u16 offset)
d16005f8
PC		 1545{
1546 _jit_name(block->_jit, __func__);
02487de7
PC		 1547 rec_store(state, block, offset,
1548 jit_code_stxi_s, jit_code_bswapr_us);
d16005f8
PC		 1549}
1550
98fa08a5
PC		 1551static void rec_SW(struct lightrec_cstate *state,
1552 const struct block *block, u16 offset)
1553
d16005f8 1554{
9259d748
PC		 1555 union code c = block->opcode_list[offset].c;
1556
1557 _jit_name(block->_jit, c.i.op == OP_SWC2 ? "rec_SWC2" : "rec_SW");
02487de7
PC		 1558 rec_store(state, block, offset,
1559 jit_code_stxi_i, jit_code_bswapr_ui);
d16005f8
PC		 1560}
1561
98fa08a5
PC		 1562static void rec_SWL(struct lightrec_cstate *state,
1563 const struct block *block, u16 offset)
d16005f8
PC		 1564{
1565 _jit_name(block->_jit, __func__);
98fa08a5 1566 rec_io(state, block, offset, true, false);
d16005f8
PC		 1567}
1568
98fa08a5
PC		 1569static void rec_SWR(struct lightrec_cstate *state,
1570 const struct block *block, u16 offset)
d16005f8
PC		 1571{
1572 _jit_name(block->_jit, __func__);
98fa08a5 1573 rec_io(state, block, offset, true, false);
d16005f8
PC		 1574}
1575
22eee2ac 1576static void rec_load_memory(struct lightrec_cstate *cstate,
02487de7
PC		 1577 const struct block *block, u16 offset,
1578 jit_code_t code, jit_code_t swap_code, bool is_unsigned,
22eee2ac
PC		 1579 uintptr_t addr_offset, u32 addr_mask)
1580{
1581 struct regcache *reg_cache = cstate->reg_cache;
1582 struct opcode *op = &block->opcode_list[offset];
cb72ea13 1583 bool load_delay = op_flag_load_delay(op->flags) && !cstate->no_load_delay;
22eee2ac 1584 jit_state_t *_jit = block->_jit;
9259d748 1585 u8 rs, rt, out_reg, addr_reg, flags = REG_EXT;
03535202 1586 bool no_mask = op_flag_no_mask(op->flags);
22eee2ac 1587 union code c = op->c;
02487de7 1588 s16 imm;
22eee2ac 1589
cb72ea13
PC		 1590 if (load_delay || c.i.op == OP_LWC2)
1591 out_reg = REG_TEMP;
9259d748
PC		 1592 else if (c.i.rt)
1593 out_reg = c.i.rt;
1594 else
22eee2ac
PC		 1595 return;
1596
1597 if (is_unsigned)
1598 flags |= REG_ZEXT;
1599
1600 rs = lightrec_alloc_reg_in(reg_cache, _jit, c.i.rs, 0);
9259d748 1601 rt = lightrec_alloc_reg_out(reg_cache, _jit, out_reg, flags);
22eee2ac 1602
02487de7
PC		 1603 if (!cstate->state->mirrors_mapped && c.i.imm && !no_mask) {
1604 jit_addi(rt, rs, (s16)c.i.imm);
22eee2ac 1605 addr_reg = rt;
02487de7 1606 imm = 0;
22eee2ac
PC		 1607 } else {
1608 addr_reg = rs;
02487de7
PC		 1609 imm = (s16)c.i.imm;
1610 }
1611
1612 if (!no_mask) {
1613 jit_andi(rt, addr_reg, addr_mask);
1614 addr_reg = rt;
22eee2ac
PC		 1615 }
1616
1617 if (addr_offset) {
1618 jit_addi(rt, addr_reg, addr_offset);
1619 addr_reg = rt;
1620 }
1621
02487de7
PC		 1622 jit_new_node_www(code, rt, addr_reg, imm);
1623
1624 if (is_big_endian() && swap_code) {
1625 jit_new_node_ww(swap_code, rt, rt);
1626
1627 if (c.i.op == OP_LH)
1628 jit_extr_s(rt, rt);
1629 else if (c.i.op == OP_LW && __WORDSIZE == 64)
1630 jit_extr_i(rt, rt);
1631 }
22eee2ac
PC		 1632
1633 lightrec_free_reg(reg_cache, rs);
1634 lightrec_free_reg(reg_cache, rt);
1635}
1636
1637static void rec_load_ram(struct lightrec_cstate *cstate,
02487de7
PC		 1638 const struct block *block, u16 offset,
1639 jit_code_t code, jit_code_t swap_code, bool is_unsigned)
22eee2ac
PC		 1640{
1641 _jit_note(block->_jit, __FILE__, __LINE__);
1642
02487de7
PC		 1643 rec_load_memory(cstate, block, offset, code, swap_code, is_unsigned,
1644 cstate->state->offset_ram, rec_ram_mask(cstate->state));
22eee2ac
PC		 1645}
1646
1647static void rec_load_bios(struct lightrec_cstate *cstate,
02487de7
PC		 1648 const struct block *block, u16 offset,
1649 jit_code_t code, jit_code_t swap_code, bool is_unsigned)
22eee2ac
PC		 1650{
1651 _jit_note(block->_jit, __FILE__, __LINE__);
1652
02487de7 1653 rec_load_memory(cstate, block, offset, code, swap_code, is_unsigned,
22eee2ac
PC		 1654 cstate->state->offset_bios, 0x1fffffff);
1655}
1656
1657static void rec_load_scratch(struct lightrec_cstate *cstate,
02487de7
PC		 1658 const struct block *block, u16 offset,
1659 jit_code_t code, jit_code_t swap_code, bool is_unsigned)
22eee2ac
PC		 1660{
1661 _jit_note(block->_jit, __FILE__, __LINE__);
1662
02487de7 1663 rec_load_memory(cstate, block, offset, code, swap_code, is_unsigned,
22eee2ac
PC		 1664 cstate->state->offset_scratch, 0x1fffffff);
1665}
1666
ba3814c1
PC		 1667static void rec_load_io(struct lightrec_cstate *cstate,
1668 const struct block *block, u16 offset,
1669 jit_code_t code, jit_code_t swap_code, bool is_unsigned)
1670{
1671 _jit_note(block->_jit, __FILE__, __LINE__);
1672
1673 rec_load_memory(cstate, block, offset, code, swap_code, is_unsigned,
13b02197 1674 cstate->state->offset_io, rec_io_mask(cstate->state));
ba3814c1
PC		 1675}
1676
02487de7
PC		 1677static void rec_load_direct(struct lightrec_cstate *cstate,
1678 const struct block *block, u16 offset,
1679 jit_code_t code, jit_code_t swap_code,
1680 bool is_unsigned)
d16005f8 1681{
98fa08a5
PC		 1682 struct lightrec_state *state = cstate->state;
1683 struct regcache *reg_cache = cstate->reg_cache;
cb72ea13
PC		 1684 struct opcode *op = &block->opcode_list[offset];
1685 bool load_delay = op_flag_load_delay(op->flags) && !cstate->no_load_delay;
d16005f8 1686 jit_state_t *_jit = block->_jit;
98fa08a5 1687 jit_node_t *to_not_ram, *to_not_bios, *to_end, *to_end2;
9259d748 1688 u8 tmp, rs, rt, out_reg, addr_reg, flags = REG_EXT;
cb72ea13 1689 union code c = op->c;
d16005f8
PC		 1690 s16 imm;
1691
cb72ea13
PC		 1692 if (load_delay || c.i.op == OP_LWC2)
1693 out_reg = REG_TEMP;
9259d748
PC		 1694 else if (c.i.rt)
1695 out_reg = c.i.rt;
1696 else
d16005f8
PC		 1697 return;
1698
98fa08a5
PC		 1699 if (is_unsigned)
1700 flags |= REG_ZEXT;
1701
d16005f8 1702 jit_note(__FILE__, __LINE__);
98fa08a5 1703 rs = lightrec_alloc_reg_in(reg_cache, _jit, c.i.rs, 0);
9259d748 1704 rt = lightrec_alloc_reg_out(reg_cache, _jit, out_reg, flags);
d16005f8
PC		 1705
1706 if ((state->offset_ram == state->offset_bios &&
1707 state->offset_ram == state->offset_scratch &&
98fa08a5 1708 state->mirrors_mapped) || !c.i.imm) {
d16005f8 1709 addr_reg = rs;
98fa08a5 1710 imm = (s16)c.i.imm;
d16005f8 1711 } else {
98fa08a5 1712 jit_addi(rt, rs, (s16)c.i.imm);
d16005f8
PC		 1713 addr_reg = rt;
1714 imm = 0;
1715
98fa08a5 1716 if (c.i.rs != c.i.rt)
d16005f8
PC		 1717 lightrec_free_reg(reg_cache, rs);
1718 }
1719
1720 tmp = lightrec_alloc_reg_temp(reg_cache, _jit);
1721
1722 if (state->offset_ram == state->offset_bios &&
1723 state->offset_ram == state->offset_scratch) {
1724 if (!state->mirrors_mapped) {
1725 jit_andi(tmp, addr_reg, BIT(28));
1726 jit_rshi_u(tmp, tmp, 28 - 22);
1727 jit_ori(tmp, tmp, 0x1f800000 | (RAM_SIZE - 1));
1728 jit_andr(rt, addr_reg, tmp);
1729 } else {
1730 jit_andi(rt, addr_reg, 0x1fffffff);
1731 }
1732
1733 if (state->offset_ram)
1734 jit_movi(tmp, state->offset_ram);
1735 } else {
1736 to_not_ram = jit_bmsi(addr_reg, BIT(28));
1737
1738 /* Convert to KUNSEG and avoid RAM mirrors */
1739 jit_andi(rt, addr_reg, RAM_SIZE - 1);
1740
1741 if (state->offset_ram)
1742 jit_movi(tmp, state->offset_ram);
1743
22eee2ac 1744 to_end = jit_b();
d16005f8
PC		 1745
1746 jit_patch(to_not_ram);
1747
1748 if (state->offset_bios != state->offset_scratch)
1749 to_not_bios = jit_bmci(addr_reg, BIT(22));
1750
1751 /* Convert to KUNSEG */
1752 jit_andi(rt, addr_reg, 0x1fc00000 | (BIOS_SIZE - 1));
1753
1754 jit_movi(tmp, state->offset_bios);
1755
1756 if (state->offset_bios != state->offset_scratch) {
22eee2ac 1757 to_end2 = jit_b();
d16005f8
PC		 1758
1759 jit_patch(to_not_bios);
1760
1761 /* Convert to KUNSEG */
1762 jit_andi(rt, addr_reg, 0x1f800fff);
1763
1764 if (state->offset_scratch)
1765 jit_movi(tmp, state->offset_scratch);
1766
1767 jit_patch(to_end2);
1768 }
1769
1770 jit_patch(to_end);
1771 }
1772
1773 if (state->offset_ram || state->offset_bios || state->offset_scratch)
1774 jit_addr(rt, rt, tmp);
1775
1776 jit_new_node_www(code, rt, rt, imm);
1777
02487de7
PC		 1778 if (is_big_endian() && swap_code) {
1779 jit_new_node_ww(swap_code, rt, rt);
1780
1781 if (c.i.op == OP_LH)
1782 jit_extr_s(rt, rt);
1783 else if (c.i.op == OP_LW && __WORDSIZE == 64)
1784 jit_extr_i(rt, rt);
1785 }
1786
d16005f8
PC		 1787 lightrec_free_reg(reg_cache, addr_reg);
1788 lightrec_free_reg(reg_cache, rt);
1789 lightrec_free_reg(reg_cache, tmp);
1790}
1791
98fa08a5 1792static void rec_load(struct lightrec_cstate *state, const struct block *block,
02487de7
PC		 1793 u16 offset, jit_code_t code, jit_code_t swap_code,
1794 bool is_unsigned)
d16005f8 1795{
9259d748
PC		 1796 const struct opcode *op = &block->opcode_list[offset];
1797 u32 flags = op->flags;
98fa08a5 1798
22eee2ac
PC		 1799 switch (LIGHTREC_FLAGS_GET_IO_MODE(flags)) {
1800 case LIGHTREC_IO_RAM:
02487de7 1801 rec_load_ram(state, block, offset, code, swap_code, is_unsigned);
22eee2ac
PC		 1802 break;
1803 case LIGHTREC_IO_BIOS:
02487de7 1804 rec_load_bios(state, block, offset, code, swap_code, is_unsigned);
22eee2ac
PC		 1805 break;
1806 case LIGHTREC_IO_SCRATCH:
02487de7 1807 rec_load_scratch(state, block, offset, code, swap_code, is_unsigned);
22eee2ac 1808 break;
ba3814c1
PC		 1809 case LIGHTREC_IO_DIRECT_HW:
1810 rec_load_io(state, block, offset, code, swap_code, is_unsigned);
1811 break;
22eee2ac 1812 case LIGHTREC_IO_DIRECT:
02487de7 1813 rec_load_direct(state, block, offset, code, swap_code, is_unsigned);
22eee2ac
PC		 1814 break;
1815 default:
98fa08a5 1816 rec_io(state, block, offset, false, true);
9259d748
PC		 1817 return;
1818 }
1819
1820 if (op->i.op == OP_LWC2) {
cb72ea13
PC		 1821 rec_cp2_do_mtc2(state, block, offset, op->i.rt, REG_TEMP);
1822 lightrec_discard_reg_if_loaded(state->reg_cache, REG_TEMP);
22eee2ac 1823 }
d16005f8
PC		 1824}
1825
98fa08a5 1826static void rec_LB(struct lightrec_cstate *state, const struct block *block, u16 offset)
d16005f8
PC		 1827{
1828 _jit_name(block->_jit, __func__);
02487de7 1829 rec_load(state, block, offset, jit_code_ldxi_c, 0, false);
d16005f8
PC		 1830}
1831
98fa08a5 1832static void rec_LBU(struct lightrec_cstate *state, const struct block *block, u16 offset)
d16005f8
PC		 1833{
1834 _jit_name(block->_jit, __func__);
02487de7 1835 rec_load(state, block, offset, jit_code_ldxi_uc, 0, true);
d16005f8
PC		 1836}
1837
98fa08a5 1838static void rec_LH(struct lightrec_cstate *state, const struct block *block, u16 offset)
d16005f8 1839{
ba3814c1
PC		 1840 jit_code_t code = is_big_endian() ? jit_code_ldxi_us : jit_code_ldxi_s;
1841
d16005f8 1842 _jit_name(block->_jit, __func__);
ba3814c1 1843 rec_load(state, block, offset, code, jit_code_bswapr_us, false);
d16005f8
PC		 1844}
1845
98fa08a5 1846static void rec_LHU(struct lightrec_cstate *state, const struct block *block, u16 offset)
d16005f8
PC		 1847{
1848 _jit_name(block->_jit, __func__);
02487de7 1849 rec_load(state, block, offset, jit_code_ldxi_us, jit_code_bswapr_us, true);
d16005f8
PC		 1850}
1851
98fa08a5 1852static void rec_LWL(struct lightrec_cstate *state, const struct block *block, u16 offset)
d16005f8
PC		 1853{
1854 _jit_name(block->_jit, __func__);
98fa08a5 1855 rec_io(state, block, offset, true, true);
d16005f8
PC		 1856}
1857
98fa08a5 1858static void rec_LWR(struct lightrec_cstate *state, const struct block *block, u16 offset)
d16005f8
PC		 1859{
1860 _jit_name(block->_jit, __func__);
98fa08a5 1861 rec_io(state, block, offset, true, true);
d16005f8
PC		 1862}
1863
98fa08a5 1864static void rec_LW(struct lightrec_cstate *state, const struct block *block, u16 offset)
d16005f8 1865{
9259d748 1866 union code c = block->opcode_list[offset].c;
ba3814c1
PC		 1867 jit_code_t code;
1868
1869 if (is_big_endian() && __WORDSIZE == 64)
1870 code = jit_code_ldxi_ui;
1871 else
1872 code = jit_code_ldxi_i;
1873
9259d748 1874 _jit_name(block->_jit, c.i.op == OP_LWC2 ? "rec_LWC2" : "rec_LW");
ba3814c1 1875 rec_load(state, block, offset, code, jit_code_bswapr_ui, false);
d16005f8
PC		 1876}
1877
98fa08a5 1878static void rec_break_syscall(struct lightrec_cstate *state,
ba3814c1
PC		 1879 const struct block *block, u16 offset,
1880 u32 exit_code)
d16005f8 1881{
ba3814c1
PC		 1882 struct regcache *reg_cache = state->reg_cache;
1883 jit_state_t *_jit = block->_jit;
1884 u8 tmp;
1885
98fa08a5 1886 _jit_note(block->_jit, __FILE__, __LINE__);
d16005f8 1887
ba3814c1
PC		 1888 tmp = lightrec_alloc_reg_temp(reg_cache, _jit);
1889
1890 jit_movi(tmp, exit_code);
1891 jit_stxi_i(offsetof(struct lightrec_state, exit_flags),
1892 LIGHTREC_REG_STATE, tmp);
1893
cb72ea13
PC		 1894 jit_ldxi_i(tmp, LIGHTREC_REG_STATE,
1895 offsetof(struct lightrec_state, target_cycle));
1896 jit_subr(tmp, tmp, LIGHTREC_REG_CYCLE);
1897 jit_movi(LIGHTREC_REG_CYCLE, 0);
1898 jit_stxi_i(offsetof(struct lightrec_state, target_cycle),
1899 LIGHTREC_REG_STATE, tmp);
1900 jit_stxi_i(offsetof(struct lightrec_state, current_cycle),
1901 LIGHTREC_REG_STATE, tmp);
1902
ba3814c1 1903 lightrec_free_reg(reg_cache, tmp);
d16005f8
PC		 1904
1905 /* TODO: the return address should be "pc - 4" if we're a delay slot */
98fa08a5
PC		 1906 lightrec_emit_end_of_block(state, block, offset, -1,
1907 get_ds_pc(block, offset, 0),
1908 31, 0, true);
d16005f8
PC		 1909}
1910
98fa08a5
PC		 1911static void rec_special_SYSCALL(struct lightrec_cstate *state,
1912 const struct block *block, u16 offset)
d16005f8
PC		 1913{
1914 _jit_name(block->_jit, __func__);
ba3814c1 1915 rec_break_syscall(state, block, offset, LIGHTREC_EXIT_SYSCALL);
d16005f8
PC		 1916}
1917
98fa08a5
PC		 1918static void rec_special_BREAK(struct lightrec_cstate *state,
1919 const struct block *block, u16 offset)
d16005f8
PC		 1920{
1921 _jit_name(block->_jit, __func__);
ba3814c1 1922 rec_break_syscall(state, block, offset, LIGHTREC_EXIT_BREAK);
d16005f8
PC		 1923}
1924
fdf33147
PC		 1925static void rec_mfc(struct lightrec_cstate *state, const struct block *block, u16 offset)
1926{
1927 struct regcache *reg_cache = state->reg_cache;
1928 union code c = block->opcode_list[offset].c;
1929 jit_state_t *_jit = block->_jit;
1930
1931 jit_note(__FILE__, __LINE__);
9259d748
PC		 1932
1933 if (c.i.op != OP_SWC2)
1934 lightrec_clean_reg_if_loaded(reg_cache, _jit, c.i.rt, true);
fdf33147
PC		 1935
1936 call_to_c_wrapper(state, block, c.opcode, C_WRAPPER_MFC);
1937}
1938
fd58fa32 1939static void rec_mtc(struct lightrec_cstate *state, const struct block *block, u16 offset)
98fa08a5
PC		 1940{
1941 struct regcache *reg_cache = state->reg_cache;
1942 union code c = block->opcode_list[offset].c;
1943 jit_state_t *_jit = block->_jit;
d16005f8 1944
98fa08a5
PC		 1945 jit_note(__FILE__, __LINE__);
1946 lightrec_clean_reg_if_loaded(reg_cache, _jit, c.i.rs, false);
1947 lightrec_clean_reg_if_loaded(reg_cache, _jit, c.i.rt, false);
cb72ea13 1948 lightrec_clean_reg_if_loaded(reg_cache, _jit, REG_TEMP, false);
d16005f8 1949
ba3814c1 1950 call_to_c_wrapper(state, block, c.opcode, C_WRAPPER_MTC);
d16005f8 1951
98fa08a5 1952 if (c.i.op == OP_CP0 &&
03535202 1953 !op_flag_no_ds(block->opcode_list[offset].flags) &&
98fa08a5
PC		 1954 (c.r.rd == 12 || c.r.rd == 13))
1955 lightrec_emit_end_of_block(state, block, offset, -1,
1956 get_ds_pc(block, offset, 1),
1957 0, 0, true);
d16005f8
PC		 1958}
1959
98fa08a5
PC		 1960static void
1961rec_mfc0(struct lightrec_cstate *state, const struct block *block, u16 offset)
d16005f8 1962{
d16005f8 1963 struct regcache *reg_cache = state->reg_cache;
98fa08a5 1964 union code c = block->opcode_list[offset].c;
d16005f8 1965 jit_state_t *_jit = block->_jit;
98fa08a5 1966 u8 rt;
d16005f8
PC		 1967
1968 jit_note(__FILE__, __LINE__);
1969
98fa08a5 1970 rt = lightrec_alloc_reg_out(reg_cache, _jit, c.i.rt, REG_EXT);
d16005f8 1971
98fa08a5
PC		 1972 jit_ldxi_i(rt, LIGHTREC_REG_STATE,
1973 offsetof(struct lightrec_state, regs.cp0[c.r.rd]));
d16005f8 1974
98fa08a5
PC		 1975 lightrec_free_reg(reg_cache, rt);
1976}
d16005f8 1977
cb72ea13
PC		 1978static bool block_uses_icache(const struct lightrec_cstate *state,
1979 const struct block *block)
98fa08a5 1980{
cb72ea13 1981 const struct lightrec_mem_map *map = &state->state->maps[PSX_MAP_KERNEL_USER_RAM];
98fa08a5 1982 u32 pc = kunseg(block->pc);
d16005f8 1983
cb72ea13
PC		 1984 if (pc < map->pc || pc >= map->pc + map->length)
1985 return false;
1986
1987 return (block->pc >> 28) < 0xa;
d16005f8
PC		 1988}
1989
98fa08a5
PC		 1990static void
1991rec_mtc0(struct lightrec_cstate *state, const struct block *block, u16 offset)
d16005f8 1992{
98fa08a5
PC		 1993 struct regcache *reg_cache = state->reg_cache;
1994 const union code c = block->opcode_list[offset].c;
1995 jit_state_t *_jit = block->_jit;
fd58fa32 1996 u8 rt, tmp = 0, tmp2, status;
0cf41071 1997 jit_node_t *to_end;
98fa08a5
PC		 1998
1999 jit_note(__FILE__, __LINE__);
2000
2001 switch(c.r.rd) {
2002 case 1:
2003 case 4:
2004 case 8:
2005 case 14:
2006 case 15:
2007 /* Those registers are read-only */
2008 return;
2009 default:
2010 break;
2011 }
2012
cb72ea13
PC		 2013 if (!block_uses_icache(state, block) && c.r.rd == 12) {
2014 /* If we are not running code from the RAM through kuseg or
2015 * kseg0, handle writes to the Status register in C; as the
2016 * code may toggle bit 16 which isolates the cache. Code
2017 * running from kuseg or kseg0 in RAM cannot do that. */
98fa08a5
PC		 2018 rec_mtc(state, block, offset);
2019 return;
2020 }
2021
2022 rt = lightrec_alloc_reg_in(reg_cache, _jit, c.i.rt, 0);
2023
2024 if (c.r.rd != 13) {
2025 jit_stxi_i(offsetof(struct lightrec_state, regs.cp0[c.r.rd]),
2026 LIGHTREC_REG_STATE, rt);
2027 }
2028
2029 if (c.r.rd == 12 || c.r.rd == 13) {
2030 tmp = lightrec_alloc_reg_temp(reg_cache, _jit);
2031 jit_ldxi_i(tmp, LIGHTREC_REG_STATE,
2032 offsetof(struct lightrec_state, regs.cp0[13]));
fd58fa32
PC		 2033
2034 tmp2 = lightrec_alloc_reg_temp(reg_cache, _jit);
98fa08a5
PC		 2035 }
2036
2037 if (c.r.rd == 12) {
2038 status = rt;
2039 } else if (c.r.rd == 13) {
98fa08a5
PC		 2040 /* Cause = (Cause & ~0x0300) | (value & 0x0300) */
2041 jit_andi(tmp2, rt, 0x0300);
2042 jit_ori(tmp, tmp, 0x0300);
2043 jit_xori(tmp, tmp, 0x0300);
2044 jit_orr(tmp, tmp, tmp2);
2045 jit_ldxi_i(tmp2, LIGHTREC_REG_STATE,
2046 offsetof(struct lightrec_state, regs.cp0[12]));
2047 jit_stxi_i(offsetof(struct lightrec_state, regs.cp0[13]),
2048 LIGHTREC_REG_STATE, tmp);
2049 status = tmp2;
2050 }
2051
2052 if (c.r.rd == 12 || c.r.rd == 13) {
2053 /* Exit dynarec in case there's a software interrupt.
2054 * exit_flags = !!(status & tmp & 0x0300) & status; */
2055 jit_andr(tmp, tmp, status);
2056 jit_andi(tmp, tmp, 0x0300);
2057 jit_nei(tmp, tmp, 0);
2058 jit_andr(tmp, tmp, status);
fd58fa32
PC		 2059 }
2060
2061 if (c.r.rd == 12) {
2062 /* Exit dynarec in case we unmask a hardware interrupt.
2063 * exit_flags = !(~status & 0x401) */
2064
2065 jit_comr(tmp2, status);
2066 jit_andi(tmp2, tmp2, 0x401);
2067 jit_eqi(tmp2, tmp2, 0);
2068 jit_orr(tmp, tmp, tmp2);
2069 }
2070
0cf41071
PC		 2071 lightrec_free_reg(reg_cache, rt);
2072
fd58fa32 2073 if (c.r.rd == 12 || c.r.rd == 13) {
0cf41071 2074 to_end = jit_beqi(tmp, 0);
98fa08a5 2075
0cf41071
PC		 2076 jit_ldxi_i(tmp2, LIGHTREC_REG_STATE,
2077 offsetof(struct lightrec_state, target_cycle));
2078 jit_subr(tmp2, tmp2, LIGHTREC_REG_CYCLE);
2079 jit_movi(LIGHTREC_REG_CYCLE, 0);
2080 jit_stxi_i(offsetof(struct lightrec_state, target_cycle),
2081 LIGHTREC_REG_STATE, tmp2);
2082 jit_stxi_i(offsetof(struct lightrec_state, current_cycle),
2083 LIGHTREC_REG_STATE, tmp2);
98fa08a5 2084
0cf41071
PC		 2085
2086 jit_patch(to_end);
2087 }
98fa08a5 2088
03535202 2089 if (!op_flag_no_ds(block->opcode_list[offset].flags) &&
13b02197
PC		 2090 (c.r.rd == 12 || c.r.rd == 13)) {
2091 state->cycles += lightrec_cycles_of_opcode(c);
2092 lightrec_emit_eob(state, block, offset + 1);
2093 }
d16005f8
PC		 2094}
2095
98fa08a5
PC		 2096static void rec_cp0_MFC0(struct lightrec_cstate *state,
2097 const struct block *block, u16 offset)
d16005f8
PC		 2098{
2099 _jit_name(block->_jit, __func__);
98fa08a5 2100 rec_mfc0(state, block, offset);
d16005f8
PC		 2101}
2102
98fa08a5
PC		 2103static void rec_cp0_CFC0(struct lightrec_cstate *state,
2104 const struct block *block, u16 offset)
d16005f8
PC		 2105{
2106 _jit_name(block->_jit, __func__);
98fa08a5 2107 rec_mfc0(state, block, offset);
d16005f8
PC		 2108}
2109
98fa08a5
PC		 2110static void rec_cp0_MTC0(struct lightrec_cstate *state,
2111 const struct block *block, u16 offset)
d16005f8
PC		 2112{
2113 _jit_name(block->_jit, __func__);
98fa08a5 2114 rec_mtc0(state, block, offset);
d16005f8
PC		 2115}
2116
98fa08a5
PC		 2117static void rec_cp0_CTC0(struct lightrec_cstate *state,
2118 const struct block *block, u16 offset)
d16005f8
PC		 2119{
2120 _jit_name(block->_jit, __func__);
98fa08a5 2121 rec_mtc0(state, block, offset);
d16005f8
PC		 2122}
2123
02487de7
PC		 2124static unsigned int cp2d_i_offset(u8 reg)
2125{
2126 return offsetof(struct lightrec_state, regs.cp2d[reg]);
2127}
2128
2129static unsigned int cp2d_s_offset(u8 reg)
2130{
2131 return cp2d_i_offset(reg) + is_big_endian() * 2;
2132}
2133
2134static unsigned int cp2c_i_offset(u8 reg)
2135{
2136 return offsetof(struct lightrec_state, regs.cp2c[reg]);
2137}
2138
2139static unsigned int cp2c_s_offset(u8 reg)
2140{
2141 return cp2c_i_offset(reg) + is_big_endian() * 2;
2142}
2143
9259d748
PC		 2144static void rec_cp2_do_mfc2(struct lightrec_cstate *state,
2145 const struct block *block, u16 offset,
2146 u8 reg, u8 out_reg)
d16005f8 2147{
fd58fa32 2148 struct regcache *reg_cache = state->reg_cache;
fd58fa32
PC		 2149 jit_state_t *_jit = block->_jit;
2150 const u32 zext_regs = 0x300f0080;
2151 u8 rt, tmp, tmp2, tmp3, out, flags;
fd58fa32
PC		 2152 unsigned int i;
2153
d16005f8 2154 _jit_name(block->_jit, __func__);
fd58fa32 2155
fdf33147
PC		 2156 if (state->state->ops.cop2_notify) {
2157 /* We must call cop2_notify, handle that in C. */
2158 rec_mfc(state, block, offset);
2159 return;
2160 }
2161
fd58fa32 2162 flags = (zext_regs & BIT(reg)) ? REG_ZEXT : REG_EXT;
9259d748
PC		 2163 rt = lightrec_alloc_reg_out(reg_cache, _jit, out_reg, flags);
2164
2165 if (reg == 15)
2166 reg = 14;
fd58fa32
PC		 2167
2168 switch (reg) {
2169 case 1:
2170 case 3:
2171 case 5:
2172 case 8:
2173 case 9:
2174 case 10:
2175 case 11:
02487de7 2176 jit_ldxi_s(rt, LIGHTREC_REG_STATE, cp2d_s_offset(reg));
fd58fa32
PC		 2177 break;
2178 case 7:
2179 case 16:
2180 case 17:
2181 case 18:
2182 case 19:
02487de7 2183 jit_ldxi_us(rt, LIGHTREC_REG_STATE, cp2d_s_offset(reg));
fd58fa32
PC		 2184 break;
2185 case 28:
2186 case 29:
2187 tmp = lightrec_alloc_reg_temp(reg_cache, _jit);
2188 tmp2 = lightrec_alloc_reg_temp(reg_cache, _jit);
2189 tmp3 = lightrec_alloc_reg_temp(reg_cache, _jit);
2190
2191 for (i = 0; i < 3; i++) {
2192 out = i == 0 ? rt : tmp;
2193
02487de7 2194 jit_ldxi_s(tmp, LIGHTREC_REG_STATE, cp2d_s_offset(9 + i));
fd58fa32
PC		 2195 jit_movi(tmp2, 0x1f);
2196 jit_rshi(out, tmp, 7);
2197
2198 jit_ltr(tmp3, tmp2, out);
2199 jit_movnr(out, tmp2, tmp3);
2200
2201 jit_gei(tmp2, out, 0);
2202 jit_movzr(out, tmp2, tmp2);
2203
2204 if (i > 0) {
2205 jit_lshi(tmp, tmp, 5 * i);
2206 jit_orr(rt, rt, tmp);
2207 }
2208 }
2209
2210
2211 lightrec_free_reg(reg_cache, tmp);
2212 lightrec_free_reg(reg_cache, tmp2);
2213 lightrec_free_reg(reg_cache, tmp3);
2214 break;
2215 default:
02487de7 2216 jit_ldxi_i(rt, LIGHTREC_REG_STATE, cp2d_i_offset(reg));
fd58fa32
PC		 2217 break;
2218 }
2219
2220 lightrec_free_reg(reg_cache, rt);
d16005f8
PC		 2221}
2222
9259d748
PC		 2223static void rec_cp2_basic_MFC2(struct lightrec_cstate *state,
2224 const struct block *block, u16 offset)
2225{
2226 const union code c = block->opcode_list[offset].c;
2227
2228 rec_cp2_do_mfc2(state, block, offset, c.r.rd, c.r.rt);
2229}
2230
98fa08a5
PC		 2231static void rec_cp2_basic_CFC2(struct lightrec_cstate *state,
2232 const struct block *block, u16 offset)
d16005f8 2233{
fd58fa32
PC		 2234 struct regcache *reg_cache = state->reg_cache;
2235 const union code c = block->opcode_list[offset].c;
2236 jit_state_t *_jit = block->_jit;
2237 u8 rt;
2238
d16005f8 2239 _jit_name(block->_jit, __func__);
fd58fa32 2240
fdf33147
PC		 2241 if (state->state->ops.cop2_notify) {
2242 /* We must call cop2_notify, handle that in C. */
2243 rec_mfc(state, block, offset);
2244 return;
2245 }
2246
fd58fa32
PC		 2247 switch (c.r.rd) {
2248 case 4:
2249 case 12:
2250 case 20:
2251 case 26:
2252 case 27:
2253 case 29:
2254 case 30:
2255 rt = lightrec_alloc_reg_out(reg_cache, _jit, c.r.rt, REG_EXT);
02487de7 2256 jit_ldxi_s(rt, LIGHTREC_REG_STATE, cp2c_s_offset(c.r.rd));
fd58fa32
PC		 2257 break;
2258 default:
2259 rt = lightrec_alloc_reg_out(reg_cache, _jit, c.r.rt, REG_ZEXT);
0cf41071 2260 jit_ldxi_ui(rt, LIGHTREC_REG_STATE, cp2c_i_offset(c.r.rd));
fd58fa32
PC		 2261 break;
2262 }
2263
2264 lightrec_free_reg(reg_cache, rt);
d16005f8
PC		 2265}
2266
9259d748
PC		 2267static void rec_cp2_do_mtc2(struct lightrec_cstate *state,
2268 const struct block *block, u16 offset,
2269 u8 reg, u8 in_reg)
d16005f8 2270{
fd58fa32 2271 struct regcache *reg_cache = state->reg_cache;
fd58fa32 2272 jit_state_t *_jit = block->_jit;
fd58fa32
PC		 2273 u8 rt, tmp, tmp2, flags = 0;
2274
d16005f8 2275 _jit_name(block->_jit, __func__);
fd58fa32 2276
fdf33147
PC		 2277 if (state->state->ops.cop2_notify) {
2278 /* We must call cop2_notify, handle that in C. */
2279 rec_mtc(state, block, offset);
2280 return;
2281 }
2282
9259d748 2283 if (reg == 31)
fd58fa32
PC		 2284 return;
2285
9259d748 2286 if (reg == 30)
fd58fa32
PC		 2287 flags |= REG_EXT;
2288
9259d748 2289 rt = lightrec_alloc_reg_in(reg_cache, _jit, in_reg, flags);
fd58fa32 2290
9259d748 2291 switch (reg) {
fd58fa32
PC		 2292 case 15:
2293 tmp = lightrec_alloc_reg_temp(reg_cache, _jit);
02487de7 2294 jit_ldxi_i(tmp, LIGHTREC_REG_STATE, cp2d_i_offset(13));
fd58fa32
PC		 2295
2296 tmp2 = lightrec_alloc_reg_temp(reg_cache, _jit);
02487de7 2297 jit_ldxi_i(tmp2, LIGHTREC_REG_STATE, cp2d_i_offset(14));
fd58fa32 2298
02487de7
PC		 2299 jit_stxi_i(cp2d_i_offset(12), LIGHTREC_REG_STATE, tmp);
2300 jit_stxi_i(cp2d_i_offset(13), LIGHTREC_REG_STATE, tmp2);
2301 jit_stxi_i(cp2d_i_offset(14), LIGHTREC_REG_STATE, rt);
fd58fa32
PC		 2302
2303 lightrec_free_reg(reg_cache, tmp);
2304 lightrec_free_reg(reg_cache, tmp2);
2305 break;
2306 case 28:
2307 tmp = lightrec_alloc_reg_temp(reg_cache, _jit);
2308
2309 jit_lshi(tmp, rt, 7);
2310 jit_andi(tmp, tmp, 0xf80);
02487de7 2311 jit_stxi_s(cp2d_s_offset(9), LIGHTREC_REG_STATE, tmp);
fd58fa32
PC		 2312
2313 jit_lshi(tmp, rt, 2);
2314 jit_andi(tmp, tmp, 0xf80);
02487de7 2315 jit_stxi_s(cp2d_s_offset(10), LIGHTREC_REG_STATE, tmp);
fd58fa32
PC		 2316
2317 jit_rshi(tmp, rt, 3);
2318 jit_andi(tmp, tmp, 0xf80);
02487de7 2319 jit_stxi_s(cp2d_s_offset(11), LIGHTREC_REG_STATE, tmp);
fd58fa32
PC		 2320
2321 lightrec_free_reg(reg_cache, tmp);
2322 break;
2323 case 30:
2324 tmp = lightrec_alloc_reg_temp(reg_cache, _jit);
fd58fa32
PC		 2325
2326 /* if (rt < 0) rt = ~rt; */
2327 jit_rshi(tmp, rt, 31);
2328 jit_xorr(tmp, rt, tmp);
2329
cb72ea13
PC		 2330 /* Count leading zeros */
2331 jit_clzr(tmp, tmp);
2332 if (__WORDSIZE != 32)
2333 jit_subi(tmp, tmp, __WORDSIZE - 32);
fd58fa32 2334
cb72ea13 2335 jit_stxi_i(cp2d_i_offset(31), LIGHTREC_REG_STATE, tmp);
fd58fa32
PC		 2336
2337 lightrec_free_reg(reg_cache, tmp);
cb72ea13 2338 fallthrough;
fd58fa32 2339 default:
9259d748 2340 jit_stxi_i(cp2d_i_offset(reg), LIGHTREC_REG_STATE, rt);
fd58fa32
PC		 2341 break;
2342 }
2343
2344 lightrec_free_reg(reg_cache, rt);
d16005f8
PC		 2345}
2346
9259d748
PC		 2347static void rec_cp2_basic_MTC2(struct lightrec_cstate *state,
2348 const struct block *block, u16 offset)
2349{
2350 const union code c = block->opcode_list[offset].c;
2351
2352 rec_cp2_do_mtc2(state, block, offset, c.r.rd, c.r.rt);
2353}
2354
98fa08a5
PC		 2355static void rec_cp2_basic_CTC2(struct lightrec_cstate *state,
2356 const struct block *block, u16 offset)
d16005f8 2357{
fd58fa32
PC		 2358 struct regcache *reg_cache = state->reg_cache;
2359 const union code c = block->opcode_list[offset].c;
2360 jit_state_t *_jit = block->_jit;
2361 u8 rt, tmp, tmp2;
2362
98fa08a5 2363 _jit_name(block->_jit, __func__);
fd58fa32 2364
fdf33147
PC		 2365 if (state->state->ops.cop2_notify) {
2366 /* We must call cop2_notify, handle that in C. */
2367 rec_mtc(state, block, offset);
2368 return;
2369 }
2370
fd58fa32
PC		 2371 rt = lightrec_alloc_reg_in(reg_cache, _jit, c.r.rt, 0);
2372
2373 switch (c.r.rd) {
2374 case 4:
2375 case 12:
2376 case 20:
2377 case 26:
2378 case 27:
2379 case 29:
2380 case 30:
02487de7 2381 jit_stxi_s(cp2c_s_offset(c.r.rd), LIGHTREC_REG_STATE, rt);
fd58fa32
PC		 2382 break;
2383 case 31:
2384 tmp = lightrec_alloc_reg_temp(reg_cache, _jit);
2385 tmp2 = lightrec_alloc_reg_temp(reg_cache, _jit);
2386
2387 jit_andi(tmp, rt, 0x7f87e000);
2388 jit_nei(tmp, tmp, 0);
2389 jit_lshi(tmp, tmp, 31);
2390
2391 jit_andi(tmp2, rt, 0x7ffff000);
2392 jit_orr(tmp, tmp2, tmp);
2393
02487de7 2394 jit_stxi_i(cp2c_i_offset(31), LIGHTREC_REG_STATE, tmp);
fd58fa32
PC		 2395
2396 lightrec_free_reg(reg_cache, tmp);
2397 lightrec_free_reg(reg_cache, tmp2);
2398 break;
2399
2400 default:
02487de7 2401 jit_stxi_i(cp2c_i_offset(c.r.rd), LIGHTREC_REG_STATE, rt);
fd58fa32
PC		 2402 }
2403
2404 lightrec_free_reg(reg_cache, rt);
d16005f8
PC		 2405}
2406
98fa08a5
PC		 2407static void rec_cp0_RFE(struct lightrec_cstate *state,
2408 const struct block *block, u16 offset)
d16005f8 2409{
98fa08a5 2410 struct regcache *reg_cache = state->reg_cache;
d16005f8 2411 jit_state_t *_jit = block->_jit;
98fa08a5 2412 u8 status, tmp;
d16005f8
PC		 2413
2414 jit_name(__func__);
2415 jit_note(__FILE__, __LINE__);
2416
98fa08a5
PC		 2417 status = lightrec_alloc_reg_temp(reg_cache, _jit);
2418 jit_ldxi_i(status, LIGHTREC_REG_STATE,
2419 offsetof(struct lightrec_state, regs.cp0[12]));
d16005f8 2420
98fa08a5 2421 tmp = lightrec_alloc_reg_temp(reg_cache, _jit);
d16005f8 2422
98fa08a5
PC		 2423 /* status = ((status >> 2) & 0xf) | status & ~0xf; */
2424 jit_rshi(tmp, status, 2);
2425 jit_andi(tmp, tmp, 0xf);
2426 jit_andi(status, status, ~0xful);
2427 jit_orr(status, status, tmp);
2428
2429 jit_ldxi_i(tmp, LIGHTREC_REG_STATE,
2430 offsetof(struct lightrec_state, regs.cp0[13]));
2431 jit_stxi_i(offsetof(struct lightrec_state, regs.cp0[12]),
2432 LIGHTREC_REG_STATE, status);
2433
2434 /* Exit dynarec in case there's a software interrupt.
2435 * exit_flags = !!(status & cause & 0x0300) & status; */
2436 jit_andr(tmp, tmp, status);
2437 jit_andi(tmp, tmp, 0x0300);
2438 jit_nei(tmp, tmp, 0);
2439 jit_andr(tmp, tmp, status);
2440 jit_stxi_i(offsetof(struct lightrec_state, exit_flags),
2441 LIGHTREC_REG_STATE, tmp);
2442
2443 lightrec_free_reg(reg_cache, status);
d16005f8 2444 lightrec_free_reg(reg_cache, tmp);
d16005f8
PC		 2445}
2446
98fa08a5
PC		 2447static void rec_CP(struct lightrec_cstate *state,
2448 const struct block *block, u16 offset)
d16005f8 2449{
98fa08a5 2450 union code c = block->opcode_list[offset].c;
d16005f8
PC		 2451 jit_state_t *_jit = block->_jit;
2452
2453 jit_name(__func__);
2454 jit_note(__FILE__, __LINE__);
2455
ba3814c1 2456 call_to_c_wrapper(state, block, c.opcode, C_WRAPPER_CP);
d16005f8
PC		 2457}
2458
98fa08a5
PC		 2459static void rec_meta_MOV(struct lightrec_cstate *state,
2460 const struct block *block, u16 offset)
d16005f8 2461{
d16005f8 2462 struct regcache *reg_cache = state->reg_cache;
9259d748
PC		 2463 const struct opcode *op = &block->opcode_list[offset];
2464 union code c = op->c;
d16005f8 2465 jit_state_t *_jit = block->_jit;
9259d748 2466 bool unload_rd;
d16005f8
PC		 2467 u8 rs, rd;
2468
2469 _jit_name(block->_jit, __func__);
2470 jit_note(__FILE__, __LINE__);
9259d748
PC		 2471
2472 unload_rd = OPT_EARLY_UNLOAD
2473 && LIGHTREC_FLAGS_GET_RD(op->flags) == LIGHTREC_REG_UNLOAD;
2474
cb72ea13
PC		 2475 if (c.m.rs && !lightrec_reg_is_loaded(reg_cache, c.m.rs)) {
2476 /* The source register is not yet loaded - we can load its value
2477 * from the register cache directly into the target register. */
2478 rd = lightrec_alloc_reg_out(reg_cache, _jit, c.m.rd, REG_EXT);
2479
2480 jit_ldxi_i(rd, LIGHTREC_REG_STATE,
2481 offsetof(struct lightrec_state, regs.gpr) + (c.m.rs << 2));
d16005f8 2482
cb72ea13
PC		 2483 lightrec_free_reg(reg_cache, rd);
2484 } else if (unload_rd) {
9259d748
PC		 2485 /* If the destination register will be unloaded right after the
2486 * MOV meta-opcode, we don't actually need to write any host
2487 * register - we can just store the source register directly to
2488 * the register cache, at the offset corresponding to the
2489 * destination register. */
cb72ea13
PC		 2490 lightrec_discard_reg_if_loaded(reg_cache, c.m.rd);
2491
2492 rs = lightrec_alloc_reg_in(reg_cache, _jit, c.m.rs, 0);
9259d748
PC		 2493
2494 jit_stxi_i(offsetof(struct lightrec_state, regs.gpr)
cb72ea13 2495 + (c.m.rd << 2), LIGHTREC_REG_STATE, rs);
d16005f8 2496
98fa08a5 2497 lightrec_free_reg(reg_cache, rs);
9259d748 2498 } else {
cb72ea13
PC		 2499 if (c.m.rs)
2500 rs = lightrec_alloc_reg_in(reg_cache, _jit, c.m.rs, 0);
2501
2502 rd = lightrec_alloc_reg_out(reg_cache, _jit, c.m.rd, REG_EXT);
9259d748 2503
cb72ea13 2504 if (c.m.rs == 0) {
9259d748 2505 jit_movi(rd, 0);
cb72ea13 2506 } else {
9259d748 2507 jit_extr_i(rd, rs);
cb72ea13
PC		 2508 lightrec_free_reg(reg_cache, rs);
2509 }
9259d748
PC		 2510
2511 lightrec_free_reg(reg_cache, rd);
2512 }
d16005f8
PC		 2513}
2514
98fa08a5
PC		 2515static void rec_meta_EXTC_EXTS(struct lightrec_cstate *state,
2516 const struct block *block,
2517 u16 offset)
d16005f8 2518{
98fa08a5
PC		 2519 struct regcache *reg_cache = state->reg_cache;
2520 union code c = block->opcode_list[offset].c;
d16005f8 2521 jit_state_t *_jit = block->_jit;
cb72ea13 2522 u8 rs, rd;
d16005f8 2523
98fa08a5 2524 _jit_name(block->_jit, __func__);
d16005f8
PC		 2525 jit_note(__FILE__, __LINE__);
2526
cb72ea13
PC		 2527 rs = lightrec_alloc_reg_in(reg_cache, _jit, c.m.rs, 0);
2528 rd = lightrec_alloc_reg_out(reg_cache, _jit, c.m.rd, REG_EXT);
d16005f8 2529
cb72ea13
PC		 2530 if (c.m.op == OP_META_EXTC)
2531 jit_extr_c(rd, rs);
98fa08a5 2532 else
cb72ea13 2533 jit_extr_s(rd, rs);
d16005f8 2534
98fa08a5 2535 lightrec_free_reg(reg_cache, rs);
cb72ea13 2536 lightrec_free_reg(reg_cache, rd);
d16005f8
PC		 2537}
2538
ba3814c1
PC		 2539static void rec_meta_MULT2(struct lightrec_cstate *state,
2540 const struct block *block,
2541 u16 offset)
2542{
2543 struct regcache *reg_cache = state->reg_cache;
2544 union code c = block->opcode_list[offset].c;
2545 jit_state_t *_jit = block->_jit;
2546 u8 reg_lo = get_mult_div_lo(c);
2547 u8 reg_hi = get_mult_div_hi(c);
2548 u32 flags = block->opcode_list[offset].flags;
2549 bool is_signed = c.i.op == OP_META_MULT2;
2550 u8 rs, lo, hi, rflags = 0, hiflags = 0;
0cf41071 2551 unsigned int i;
ba3814c1
PC		 2552
2553 if (!op_flag_no_hi(flags) && c.r.op < 32) {
2554 rflags = is_signed ? REG_EXT : REG_ZEXT;
2555 hiflags = is_signed ? REG_EXT : (REG_EXT | REG_ZEXT);
2556 }
2557
2558 _jit_name(block->_jit, __func__);
2559 jit_note(__FILE__, __LINE__);
2560
2561 rs = lightrec_alloc_reg_in(reg_cache, _jit, c.i.rs, rflags);
2562
0cf41071
PC		 2563 /*
2564 * We must handle the case where one of the output registers is our rs
2565 * input register. Thanksfully, computing LO/HI can be done in any
2566 * order. Here, we make sure that the computation that overwrites the
2567 * input register is always performed last.
2568 */
2569 for (i = 0; i < 2; i++) {
2570 if ((!i ^ (reg_lo == c.i.rs)) && !op_flag_no_lo(flags)) {
2571 lo = lightrec_alloc_reg_out(reg_cache, _jit, reg_lo, 0);
2572
2573 if (c.r.op < 32)
2574 jit_lshi(lo, rs, c.r.op);
2575 else
2576 jit_movi(lo, 0);
ba3814c1 2577
0cf41071
PC		 2578 lightrec_free_reg(reg_cache, lo);
2579 continue;
2580 }
ba3814c1 2581
0cf41071
PC		 2582 if ((!!i ^ (reg_lo == c.i.rs)) && !op_flag_no_hi(flags)) {
2583 hi = lightrec_alloc_reg_out(reg_cache, _jit,
2584 reg_hi, hiflags);
ba3814c1 2585
0cf41071
PC		 2586 if (c.r.op >= 32)
2587 jit_lshi(hi, rs, c.r.op - 32);
2588 else if (is_signed)
2589 jit_rshi(hi, rs, 32 - c.r.op);
2590 else
2591 jit_rshi_u(hi, rs, 32 - c.r.op);
ba3814c1 2592
0cf41071
PC		 2593 lightrec_free_reg(reg_cache, hi);
2594 }
ba3814c1
PC		 2595 }
2596
2597 lightrec_free_reg(reg_cache, rs);
2598
2599 _jit_name(block->_jit, __func__);
2600 jit_note(__FILE__, __LINE__);
2601}
2602
cb72ea13
PC		 2603static void rec_meta_COM(struct lightrec_cstate *state,
2604 const struct block *block, u16 offset)
2605{
2606 struct regcache *reg_cache = state->reg_cache;
2607 union code c = block->opcode_list[offset].c;
2608 jit_state_t *_jit = block->_jit;
2609 u8 rd, rs, flags;
2610
2611 jit_note(__FILE__, __LINE__);
2612 rs = lightrec_alloc_reg_in(reg_cache, _jit, c.m.rs, 0);
2613 rd = lightrec_alloc_reg_out(reg_cache, _jit, c.m.rd, 0);
2614
2615 flags = lightrec_get_reg_in_flags(reg_cache, rs);
2616
2617 lightrec_set_reg_out_flags(reg_cache, rd,
2618 flags & REG_EXT);
2619
2620 jit_comr(rd, rs);
2621
2622 lightrec_free_reg(reg_cache, rs);
2623 lightrec_free_reg(reg_cache, rd);
2624}
2625
d16005f8 2626static const lightrec_rec_func_t rec_standard[64] = {
98fa08a5 2627 SET_DEFAULT_ELM(rec_standard, unknown_opcode),
d16005f8
PC		 2628 [OP_SPECIAL] = rec_SPECIAL,
2629 [OP_REGIMM] = rec_REGIMM,
2630 [OP_J] = rec_J,
2631 [OP_JAL] = rec_JAL,
2632 [OP_BEQ] = rec_BEQ,
2633 [OP_BNE] = rec_BNE,
2634 [OP_BLEZ] = rec_BLEZ,
2635 [OP_BGTZ] = rec_BGTZ,
2636 [OP_ADDI] = rec_ADDI,
2637 [OP_ADDIU] = rec_ADDIU,
2638 [OP_SLTI] = rec_SLTI,
2639 [OP_SLTIU] = rec_SLTIU,
2640 [OP_ANDI] = rec_ANDI,
2641 [OP_ORI] = rec_ORI,
2642 [OP_XORI] = rec_XORI,
2643 [OP_LUI] = rec_LUI,
2644 [OP_CP0] = rec_CP0,
2645 [OP_CP2] = rec_CP2,
2646 [OP_LB] = rec_LB,
2647 [OP_LH] = rec_LH,
2648 [OP_LWL] = rec_LWL,
2649 [OP_LW] = rec_LW,
2650 [OP_LBU] = rec_LBU,
2651 [OP_LHU] = rec_LHU,
2652 [OP_LWR] = rec_LWR,
2653 [OP_SB] = rec_SB,
2654 [OP_SH] = rec_SH,
2655 [OP_SWL] = rec_SWL,
2656 [OP_SW] = rec_SW,
2657 [OP_SWR] = rec_SWR,
9259d748
PC		 2658 [OP_LWC2] = rec_LW,
2659 [OP_SWC2] = rec_SW,
d16005f8 2660
cb72ea13 2661 [OP_META] = rec_META,
ba3814c1
PC		 2662 [OP_META_MULT2] = rec_meta_MULT2,
2663 [OP_META_MULTU2] = rec_meta_MULT2,
d16005f8
PC		 2664};
2665
2666static const lightrec_rec_func_t rec_special[64] = {
98fa08a5 2667 SET_DEFAULT_ELM(rec_special, unknown_opcode),
d16005f8
PC		 2668 [OP_SPECIAL_SLL] = rec_special_SLL,
2669 [OP_SPECIAL_SRL] = rec_special_SRL,
2670 [OP_SPECIAL_SRA] = rec_special_SRA,
2671 [OP_SPECIAL_SLLV] = rec_special_SLLV,
2672 [OP_SPECIAL_SRLV] = rec_special_SRLV,
2673 [OP_SPECIAL_SRAV] = rec_special_SRAV,
2674 [OP_SPECIAL_JR] = rec_special_JR,
2675 [OP_SPECIAL_JALR] = rec_special_JALR,
2676 [OP_SPECIAL_SYSCALL] = rec_special_SYSCALL,
2677 [OP_SPECIAL_BREAK] = rec_special_BREAK,
2678 [OP_SPECIAL_MFHI] = rec_special_MFHI,
2679 [OP_SPECIAL_MTHI] = rec_special_MTHI,
2680 [OP_SPECIAL_MFLO] = rec_special_MFLO,
2681 [OP_SPECIAL_MTLO] = rec_special_MTLO,
2682 [OP_SPECIAL_MULT] = rec_special_MULT,
2683 [OP_SPECIAL_MULTU] = rec_special_MULTU,
2684 [OP_SPECIAL_DIV] = rec_special_DIV,
2685 [OP_SPECIAL_DIVU] = rec_special_DIVU,
2686 [OP_SPECIAL_ADD] = rec_special_ADD,
2687 [OP_SPECIAL_ADDU] = rec_special_ADDU,
2688 [OP_SPECIAL_SUB] = rec_special_SUB,
2689 [OP_SPECIAL_SUBU] = rec_special_SUBU,
2690 [OP_SPECIAL_AND] = rec_special_AND,
2691 [OP_SPECIAL_OR] = rec_special_OR,
2692 [OP_SPECIAL_XOR] = rec_special_XOR,
2693 [OP_SPECIAL_NOR] = rec_special_NOR,
2694 [OP_SPECIAL_SLT] = rec_special_SLT,
2695 [OP_SPECIAL_SLTU] = rec_special_SLTU,
2696};
2697
2698static const lightrec_rec_func_t rec_regimm[64] = {
98fa08a5 2699 SET_DEFAULT_ELM(rec_regimm, unknown_opcode),
d16005f8
PC		 2700 [OP_REGIMM_BLTZ] = rec_regimm_BLTZ,
2701 [OP_REGIMM_BGEZ] = rec_regimm_BGEZ,
2702 [OP_REGIMM_BLTZAL] = rec_regimm_BLTZAL,
2703 [OP_REGIMM_BGEZAL] = rec_regimm_BGEZAL,
2704};
2705
2706static const lightrec_rec_func_t rec_cp0[64] = {
98fa08a5 2707 SET_DEFAULT_ELM(rec_cp0, rec_CP),
d16005f8
PC		 2708 [OP_CP0_MFC0] = rec_cp0_MFC0,
2709 [OP_CP0_CFC0] = rec_cp0_CFC0,
2710 [OP_CP0_MTC0] = rec_cp0_MTC0,
2711 [OP_CP0_CTC0] = rec_cp0_CTC0,
2712 [OP_CP0_RFE] = rec_cp0_RFE,
2713};
2714
2715static const lightrec_rec_func_t rec_cp2_basic[64] = {
98fa08a5 2716 SET_DEFAULT_ELM(rec_cp2_basic, rec_CP),
d16005f8
PC		 2717 [OP_CP2_BASIC_MFC2] = rec_cp2_basic_MFC2,
2718 [OP_CP2_BASIC_CFC2] = rec_cp2_basic_CFC2,
2719 [OP_CP2_BASIC_MTC2] = rec_cp2_basic_MTC2,
2720 [OP_CP2_BASIC_CTC2] = rec_cp2_basic_CTC2,
2721};
2722
cb72ea13
PC		 2723static const lightrec_rec_func_t rec_meta[64] = {
2724 SET_DEFAULT_ELM(rec_meta, unknown_opcode),
2725 [OP_META_MOV] = rec_meta_MOV,
2726 [OP_META_EXTC] = rec_meta_EXTC_EXTS,
2727 [OP_META_EXTS] = rec_meta_EXTC_EXTS,
2728 [OP_META_COM] = rec_meta_COM,
2729};
2730
98fa08a5
PC		 2731static void rec_SPECIAL(struct lightrec_cstate *state,
2732 const struct block *block, u16 offset)
d16005f8 2733{
98fa08a5
PC		 2734 union code c = block->opcode_list[offset].c;
2735 lightrec_rec_func_t f = rec_special[c.r.op];
2736
2737 if (!HAS_DEFAULT_ELM && unlikely(!f))
2738 unknown_opcode(state, block, offset);
d16005f8 2739 else
98fa08a5 2740 (*f)(state, block, offset);
d16005f8
PC		 2741}
2742
98fa08a5
PC		 2743static void rec_REGIMM(struct lightrec_cstate *state,
2744 const struct block *block, u16 offset)
d16005f8 2745{
98fa08a5
PC		 2746 union code c = block->opcode_list[offset].c;
2747 lightrec_rec_func_t f = rec_regimm[c.r.rt];
2748
2749 if (!HAS_DEFAULT_ELM && unlikely(!f))
2750 unknown_opcode(state, block, offset);
d16005f8 2751 else
98fa08a5 2752 (*f)(state, block, offset);
d16005f8
PC		 2753}
2754
98fa08a5
PC		 2755static void rec_CP0(struct lightrec_cstate *state,
2756 const struct block *block, u16 offset)
d16005f8 2757{
98fa08a5
PC		 2758 union code c = block->opcode_list[offset].c;
2759 lightrec_rec_func_t f = rec_cp0[c.r.rs];
2760
2761 if (!HAS_DEFAULT_ELM && unlikely(!f))
2762 rec_CP(state, block, offset);
d16005f8 2763 else
98fa08a5 2764 (*f)(state, block, offset);
d16005f8
PC		 2765}
2766
98fa08a5
PC		 2767static void rec_CP2(struct lightrec_cstate *state,
2768 const struct block *block, u16 offset)
d16005f8 2769{
98fa08a5
PC		 2770 union code c = block->opcode_list[offset].c;
2771
2772 if (c.r.op == OP_CP2_BASIC) {
2773 lightrec_rec_func_t f = rec_cp2_basic[c.r.rs];
2774
2775 if (HAS_DEFAULT_ELM || likely(f)) {
2776 (*f)(state, block, offset);
d16005f8
PC		 2777 return;
2778 }
2779 }
2780
98fa08a5 2781 rec_CP(state, block, offset);
d16005f8
PC		 2782}
2783
cb72ea13
PC		 2784static void rec_META(struct lightrec_cstate *state,
2785 const struct block *block, u16 offset)
2786{
2787 union code c = block->opcode_list[offset].c;
2788 lightrec_rec_func_t f = rec_meta[c.m.op];
2789
2790 if (!HAS_DEFAULT_ELM && unlikely(!f))
2791 unknown_opcode(state, block, offset);
2792 else
2793 (*f)(state, block, offset);
2794}
2795
98fa08a5
PC		 2796void lightrec_rec_opcode(struct lightrec_cstate *state,
2797 const struct block *block, u16 offset)
d16005f8 2798{
98fa08a5
PC		 2799 struct regcache *reg_cache = state->reg_cache;
2800 struct lightrec_branch_target *target;
2801 const struct opcode *op = &block->opcode_list[offset];
2802 jit_state_t *_jit = block->_jit;
2803 lightrec_rec_func_t f;
03535202 2804 u16 unload_offset;
98fa08a5 2805
03535202
PC		 2806 if (op_flag_sync(op->flags)) {
2807 if (state->cycles)
2808 jit_subi(LIGHTREC_REG_CYCLE, LIGHTREC_REG_CYCLE, state->cycles);
98fa08a5
PC		 2809 state->cycles = 0;
2810
2811 lightrec_storeback_regs(reg_cache, _jit);
2812 lightrec_regcache_reset(reg_cache);
2813
2814 pr_debug("Adding branch target at offset 0x%x\n", offset << 2);
2815 target = &state->targets[state->nb_targets++];
2816 target->offset = offset;
2817 target->label = jit_indirect();
2818 }
2819
2820 if (likely(op->opcode)) {
2821 f = rec_standard[op->i.op];
2822
2823 if (!HAS_DEFAULT_ELM && unlikely(!f))
2824 unknown_opcode(state, block, offset);
2825 else
2826 (*f)(state, block, offset);
2827 }
2828
03535202
PC		 2829 if (OPT_EARLY_UNLOAD) {
2830 unload_offset = offset +
2831 (has_delay_slot(op->c) && !op_flag_no_ds(op->flags));
2832
2833 lightrec_do_early_unload(state, block, unload_offset);
98fa08a5 2834 }
cb72ea13
PC		 2835
2836 state->no_load_delay = false;
d16005f8 2837}
ARM optimized PCSX fork