e898de13 |
1 | /* |
cff531af |
2 | * SH2 recompiler |
3 | * (C) notaz, 2009,2010 |
4 | * |
5 | * This work is licensed under the terms of MAME license. |
6 | * See COPYING file in the top-level directory. |
44e6452e |
7 | * |
8 | * notes: |
9 | * - tcache, block descriptor, link buffer overflows result in sh2_translate() |
10 | * failure, followed by full tcache invalidation for that region |
9bb5d91c |
11 | * - jumps between blocks are tracked for SMC handling (in block_links[]), |
12 | * except jumps between different tcaches |
04092e32 |
13 | * - non-main block entries are called subblocks, as they have same tracking |
14 | * structures that main blocks have. |
9bb5d91c |
15 | * |
16 | * implemented: |
17 | * - static register allocation |
18 | * - remaining register caching and tracking in temporaries |
19 | * - block-local branch linking |
20 | * - block linking (except between tcaches) |
23686515 |
21 | * - some constant propagation |
9bb5d91c |
22 | * |
23 | * TODO: |
23686515 |
24 | * - better constant propagation |
9bb5d91c |
25 | * - stack caching? |
26 | * - bug fixing |
e898de13 |
27 | */ |
f0d7b1fa |
28 | #include <stddef.h> |
679af8a3 |
29 | #include <stdio.h> |
30 | #include <stdlib.h> |
31 | #include <assert.h> |
41397701 |
32 | |
f4bb5d6b |
33 | #include "../../pico/pico_int.h" |
679af8a3 |
34 | #include "sh2.h" |
35 | #include "compiler.h" |
36 | #include "../drc/cmn.h" |
5686d931 |
37 | #include "../debug.h" |
679af8a3 |
38 | |
23686515 |
39 | // features |
40 | #define PROPAGATE_CONSTANTS 1 |
41 | #define LINK_BRANCHES 1 |
42 | |
04092e32 |
43 | // limits (per block) |
04092e32 |
44 | #define MAX_BLOCK_SIZE (BLOCK_CYCLE_LIMIT * 6 * 6) |
45 | |
23686515 |
46 | // max literal offset from the block end |
47 | #define MAX_LITERAL_OFFSET 32*2 |
04092e32 |
48 | #define MAX_LITERALS (BLOCK_CYCLE_LIMIT / 4) |
49 | #define MAX_LOCAL_BRANCHES 32 |
23686515 |
50 | |
00faec9c |
51 | /// |
52 | #define FETCH_OP(pc) \ |
53 | dr_pc_base[(pc) / 2] |
54 | |
55 | #define FETCH32(a) \ |
56 | ((dr_pc_base[(a) / 2] << 16) | dr_pc_base[(a) / 2 + 1]) |
57 | |
58 | #ifdef DRC_SH2 |
59 | |
60 | // debug stuff |
61 | // 1 - ? |
62 | // 2 - ? |
63 | // 4 - log asm |
64 | // { |
e898de13 |
65 | #ifndef DRC_DEBUG |
66 | #define DRC_DEBUG 0 |
67 | #endif |
68 | |
553c3eaa |
69 | #if DRC_DEBUG |
f4bb5d6b |
70 | #define dbg(l,...) { \ |
71 | if ((l) & DRC_DEBUG) \ |
72 | elprintf(EL_STATUS, ##__VA_ARGS__); \ |
73 | } |
74 | |
e898de13 |
75 | #include "mame/sh2dasm.h" |
009ef50c |
76 | #include <platform/libpicofe/linux/host_dasm.h> |
e898de13 |
77 | static int insns_compiled, hash_collisions, host_insn_count; |
553c3eaa |
78 | #define COUNT_OP \ |
79 | host_insn_count++ |
80 | #else // !DRC_DEBUG |
81 | #define COUNT_OP |
82 | #define dbg(...) |
e898de13 |
83 | #endif |
553c3eaa |
84 | |
fcdefcf6 |
85 | #if (DRC_DEBUG & 4) |
f4bb5d6b |
86 | static u8 *tcache_dsm_ptrs[3]; |
e898de13 |
87 | static char sh2dasm_buff[64]; |
f4bb5d6b |
88 | #define do_host_disasm(tcid) \ |
89 | host_dasm(tcache_dsm_ptrs[tcid], tcache_ptr - tcache_dsm_ptrs[tcid]); \ |
90 | tcache_dsm_ptrs[tcid] = tcache_ptr |
91 | #else |
92 | #define do_host_disasm(x) |
e898de13 |
93 | #endif |
e05b81fc |
94 | |
fcdefcf6 |
95 | #if (DRC_DEBUG & 8) || defined(PDB) |
5686d931 |
96 | static void REGPARM(3) *sh2_drc_log_entry(void *block, SH2 *sh2, u32 sr) |
e05b81fc |
97 | { |
5686d931 |
98 | if (block != NULL) { |
fcdefcf6 |
99 | dbg(8, "= %csh2 enter %08x %p, c=%d", sh2->is_slave ? 's' : 'm', |
e05b81fc |
100 | sh2->pc, block, (signed int)sr >> 12); |
5686d931 |
101 | pdb_step(sh2, sh2->pc); |
102 | } |
e05b81fc |
103 | return block; |
104 | } |
105 | #endif |
8796b7ee |
106 | // } debug |
e898de13 |
107 | |
44e6452e |
108 | #define TCACHE_BUFFERS 3 |
f4bb5d6b |
109 | |
110 | // we have 3 translation cache buffers, split from one drc/cmn buffer. |
111 | // BIOS shares tcache with data array because it's only used for init |
112 | // and can be discarded early |
8796b7ee |
113 | // XXX: need to tune sizes |
44e6452e |
114 | static const int tcache_sizes[TCACHE_BUFFERS] = { |
f4bb5d6b |
115 | DRC_TCACHE_SIZE * 6 / 8, // ROM, DRAM |
116 | DRC_TCACHE_SIZE / 8, // BIOS, data array in master sh2 |
117 | DRC_TCACHE_SIZE / 8, // ... slave |
118 | }; |
679af8a3 |
119 | |
44e6452e |
120 | static u8 *tcache_bases[TCACHE_BUFFERS]; |
121 | static u8 *tcache_ptrs[TCACHE_BUFFERS]; |
f4bb5d6b |
122 | |
123 | // ptr for code emiters |
124 | static u8 *tcache_ptr; |
e898de13 |
125 | |
44e6452e |
126 | typedef struct block_desc_ { |
127 | u32 addr; // SH2 PC address |
44e6452e |
128 | void *tcache_ptr; // translated block for above PC |
129 | struct block_desc_ *next; // next block with the same PC hash |
fcdefcf6 |
130 | #if (DRC_DEBUG & 2) |
44e6452e |
131 | int refcount; |
132 | #endif |
133 | } block_desc; |
134 | |
135 | typedef struct block_link_ { |
136 | u32 target_pc; |
a2b8c5a5 |
137 | void *jump; // insn address |
44e6452e |
138 | // struct block_link_ *next; |
139 | } block_link; |
140 | |
141 | static const int block_max_counts[TCACHE_BUFFERS] = { |
142 | 4*1024, |
143 | 256, |
144 | 256, |
145 | }; |
146 | static block_desc *block_tables[TCACHE_BUFFERS]; |
147 | static block_link *block_links[TCACHE_BUFFERS]; |
148 | static int block_counts[TCACHE_BUFFERS]; |
149 | static int block_link_counts[TCACHE_BUFFERS]; |
150 | |
c18edb34 |
151 | // host register tracking |
152 | enum { |
153 | HR_FREE, |
154 | HR_CACHED, // 'val' has sh2_reg_e |
23686515 |
155 | // HR_CONST, // 'val' has a constant |
c18edb34 |
156 | HR_TEMP, // reg used for temp storage |
157 | }; |
158 | |
23686515 |
159 | enum { |
160 | HRF_DIRTY = 1 << 0, // reg has "dirty" value to be written to ctx |
161 | HRF_LOCKED = 1 << 1, // HR_CACHED can't be evicted |
162 | }; |
163 | |
c18edb34 |
164 | typedef struct { |
23686515 |
165 | u32 hreg:5; // "host" reg |
166 | u32 greg:5; // "guest" reg |
167 | u32 type:3; |
168 | u32 flags:3; |
169 | u32 stamp:16; // kind of a timestamp |
c18edb34 |
170 | } temp_reg_t; |
171 | |
80599a42 |
172 | // note: reg_temp[] must have at least the amount of |
3863edbd |
173 | // registers used by handlers in worst case (currently 4) |
d4d62665 |
174 | #ifdef __arm__ |
65c75cb0 |
175 | #include "../drc/emit_arm.c" |
176 | |
177 | static const int reg_map_g2h[] = { |
8b4f38f4 |
178 | 4, 5, 6, 7, |
179 | 8, -1, -1, -1, |
c18edb34 |
180 | -1, -1, -1, -1, |
65514d85 |
181 | -1, -1, -1, 9, // r12 .. sp |
182 | -1, -1, -1, 10, // SHR_PC, SHR_PPC, SHR_PR, SHR_SR, |
183 | -1, -1, -1, -1, // SHR_GBR, SHR_VBR, SHR_MACH, SHR_MACL, |
c18edb34 |
184 | }; |
185 | |
186 | static temp_reg_t reg_temp[] = { |
187 | { 0, }, |
188 | { 1, }, |
189 | { 12, }, |
190 | { 14, }, |
191 | { 2, }, |
192 | { 3, }, |
65c75cb0 |
193 | }; |
194 | |
e05b81fc |
195 | #elif defined(__i386__) |
e898de13 |
196 | #include "../drc/emit_x86.c" |
197 | |
65c75cb0 |
198 | static const int reg_map_g2h[] = { |
8b4f38f4 |
199 | xSI,-1, -1, -1, |
c18edb34 |
200 | -1, -1, -1, -1, |
201 | -1, -1, -1, -1, |
202 | -1, -1, -1, -1, |
8b4f38f4 |
203 | -1, -1, -1, xDI, |
c18edb34 |
204 | -1, -1, -1, -1, |
205 | }; |
206 | |
3863edbd |
207 | // ax, cx, dx are usually temporaries by convention |
c18edb34 |
208 | static temp_reg_t reg_temp[] = { |
209 | { xAX, }, |
3863edbd |
210 | { xBX, }, |
c18edb34 |
211 | { xCX, }, |
212 | { xDX, }, |
65c75cb0 |
213 | }; |
214 | |
e05b81fc |
215 | #else |
216 | #error unsupported arch |
65c75cb0 |
217 | #endif |
218 | |
80599a42 |
219 | #define T 0x00000001 |
220 | #define S 0x00000002 |
221 | #define I 0x000000f0 |
222 | #define Q 0x00000100 |
223 | #define M 0x00000200 |
18b94127 |
224 | #define T_save 0x00000800 |
80599a42 |
225 | |
e05b81fc |
226 | #define I_SHIFT 4 |
f0d7b1fa |
227 | #define Q_SHIFT 8 |
228 | #define M_SHIFT 9 |
229 | |
f4bb5d6b |
230 | // ROM hash table |
679af8a3 |
231 | #define MAX_HASH_ENTRIES 1024 |
232 | #define HASH_MASK (MAX_HASH_ENTRIES - 1) |
f4bb5d6b |
233 | static void **hash_table; |
679af8a3 |
234 | |
18b94127 |
235 | #define HASH_FUNC(hash_tab, addr) \ |
236 | ((block_desc **)(hash_tab))[(addr) & HASH_MASK] |
237 | |
e05b81fc |
238 | static void REGPARM(1) (*sh2_drc_entry)(SH2 *sh2); |
239 | static void (*sh2_drc_dispatcher)(void); |
240 | static void (*sh2_drc_exit)(void); |
241 | static void (*sh2_drc_test_irq)(void); |
5686d931 |
242 | |
243 | static u32 REGPARM(2) (*sh2_drc_read8)(u32 a, SH2 *sh2); |
244 | static u32 REGPARM(2) (*sh2_drc_read16)(u32 a, SH2 *sh2); |
245 | static u32 REGPARM(2) (*sh2_drc_read32)(u32 a, SH2 *sh2); |
e05b81fc |
246 | static void REGPARM(2) (*sh2_drc_write8)(u32 a, u32 d); |
247 | static void REGPARM(2) (*sh2_drc_write8_slot)(u32 a, u32 d); |
248 | static void REGPARM(2) (*sh2_drc_write16)(u32 a, u32 d); |
249 | static void REGPARM(2) (*sh2_drc_write16_slot)(u32 a, u32 d); |
5686d931 |
250 | static int REGPARM(3) (*sh2_drc_write32)(u32 a, u32 d, SH2 *sh2); |
679af8a3 |
251 | |
a2b8c5a5 |
252 | // address space stuff |
a2b8c5a5 |
253 | static int dr_ctx_get_mem_ptr(u32 a, u32 *mask) |
254 | { |
255 | int poffs = -1; |
256 | |
257 | if ((a & ~0x7ff) == 0) { |
258 | // BIOS |
259 | poffs = offsetof(SH2, p_bios); |
260 | *mask = 0x7ff; |
261 | } |
262 | else if ((a & 0xfffff000) == 0xc0000000) { |
263 | // data array |
264 | poffs = offsetof(SH2, p_da); |
265 | *mask = 0xfff; |
266 | } |
267 | else if ((a & 0xc6000000) == 0x06000000) { |
268 | // SDRAM |
269 | poffs = offsetof(SH2, p_sdram); |
270 | *mask = 0x03ffff; |
271 | } |
272 | else if ((a & 0xc6000000) == 0x02000000) { |
273 | // ROM |
274 | poffs = offsetof(SH2, p_rom); |
275 | *mask = 0x3fffff; |
276 | } |
277 | |
278 | return poffs; |
279 | } |
280 | |
281 | static block_desc *dr_get_bd(u32 pc, int is_slave, int *tcache_id) |
282 | { |
283 | *tcache_id = 0; |
284 | |
285 | // we have full block id tables for data_array and RAM |
286 | // BIOS goes to data_array table too |
287 | if ((pc & 0xe0000000) == 0xc0000000 || (pc & ~0xfff) == 0) { |
288 | int blkid = Pico32xMem->drcblk_da[is_slave][(pc & 0xfff) >> SH2_DRCBLK_DA_SHIFT]; |
289 | *tcache_id = 1 + is_slave; |
290 | if (blkid & 1) |
291 | return &block_tables[*tcache_id][blkid >> 1]; |
292 | } |
293 | // RAM |
294 | else if ((pc & 0xc6000000) == 0x06000000) { |
295 | int blkid = Pico32xMem->drcblk_ram[(pc & 0x3ffff) >> SH2_DRCBLK_RAM_SHIFT]; |
296 | if (blkid & 1) |
297 | return &block_tables[0][blkid >> 1]; |
298 | } |
299 | // ROM |
300 | else if ((pc & 0xc6000000) == 0x02000000) { |
301 | block_desc *bd = HASH_FUNC(hash_table, pc); |
302 | |
303 | for (; bd != NULL; bd = bd->next) |
304 | if (bd->addr == pc) |
305 | return bd; |
306 | } |
307 | |
308 | return NULL; |
309 | } |
310 | |
311 | // --------------------------------------------------------------- |
312 | |
313 | // block management |
314 | static void REGPARM(1) flush_tcache(int tcid) |
f4bb5d6b |
315 | { |
553c3eaa |
316 | dbg(1, "tcache #%d flush! (%d/%d, bds %d/%d)", tcid, |
f4bb5d6b |
317 | tcache_ptrs[tcid] - tcache_bases[tcid], tcache_sizes[tcid], |
318 | block_counts[tcid], block_max_counts[tcid]); |
319 | |
320 | block_counts[tcid] = 0; |
a2b8c5a5 |
321 | block_link_counts[tcid] = 0; |
f4bb5d6b |
322 | tcache_ptrs[tcid] = tcache_bases[tcid]; |
323 | if (tcid == 0) { // ROM, RAM |
324 | memset(hash_table, 0, sizeof(hash_table[0]) * MAX_HASH_ENTRIES); |
325 | memset(Pico32xMem->drcblk_ram, 0, sizeof(Pico32xMem->drcblk_ram)); |
326 | } |
327 | else |
328 | memset(Pico32xMem->drcblk_da[tcid - 1], 0, sizeof(Pico32xMem->drcblk_da[0])); |
fcdefcf6 |
329 | #if (DRC_DEBUG & 4) |
f4bb5d6b |
330 | tcache_dsm_ptrs[tcid] = tcache_bases[tcid]; |
331 | #endif |
332 | } |
333 | |
5686d931 |
334 | #if LINK_BRANCHES |
44e6452e |
335 | // add block links (tracked branches) |
336 | static int dr_add_block_link(u32 target_pc, void *jump, int tcache_id) |
337 | { |
338 | block_link *bl = block_links[tcache_id]; |
339 | int cnt = block_link_counts[tcache_id]; |
340 | |
341 | if (cnt >= block_max_counts[tcache_id] * 2) { |
fcdefcf6 |
342 | dbg(1, "bl overflow for tcache %d\n", tcache_id); |
44e6452e |
343 | return -1; |
344 | } |
345 | |
346 | bl[cnt].target_pc = target_pc; |
347 | bl[cnt].jump = jump; |
348 | block_link_counts[tcache_id]++; |
349 | |
350 | return 0; |
351 | } |
5686d931 |
352 | #endif |
44e6452e |
353 | |
a2b8c5a5 |
354 | static block_desc *dr_add_block(u32 addr, int is_slave, int *blk_id) |
679af8a3 |
355 | { |
356 | block_desc *bd; |
a2b8c5a5 |
357 | int tcache_id; |
358 | int *bcount; |
359 | |
360 | bd = dr_get_bd(addr, is_slave, &tcache_id); |
361 | if (bd != NULL) { |
fcdefcf6 |
362 | dbg(2, "block override for %08x", addr); |
a2b8c5a5 |
363 | bd->tcache_ptr = tcache_ptr; |
364 | *blk_id = bd - block_tables[tcache_id]; |
365 | return bd; |
366 | } |
679af8a3 |
367 | |
a2b8c5a5 |
368 | bcount = &block_counts[tcache_id]; |
44e6452e |
369 | if (*bcount >= block_max_counts[tcache_id]) { |
fcdefcf6 |
370 | dbg(1, "bd overflow for tcache %d", tcache_id); |
f4bb5d6b |
371 | return NULL; |
44e6452e |
372 | } |
a2b8c5a5 |
373 | if (*bcount == 0) |
374 | (*bcount)++; // not using descriptor 0 |
679af8a3 |
375 | |
f4bb5d6b |
376 | bd = &block_tables[tcache_id][*bcount]; |
679af8a3 |
377 | bd->addr = addr; |
378 | bd->tcache_ptr = tcache_ptr; |
f4bb5d6b |
379 | *blk_id = *bcount; |
380 | (*bcount)++; |
679af8a3 |
381 | |
18b94127 |
382 | if ((addr & 0xc6000000) == 0x02000000) { // ROM |
383 | bd->next = HASH_FUNC(hash_table, addr); |
384 | HASH_FUNC(hash_table, addr) = bd; |
fcdefcf6 |
385 | #if (DRC_DEBUG & 2) |
18b94127 |
386 | if (bd->next != NULL) { |
387 | printf(" hash collision with %08x\n", bd->next->addr); |
388 | hash_collisions++; |
389 | } |
390 | #endif |
391 | } |
392 | |
679af8a3 |
393 | return bd; |
394 | } |
395 | |
a2b8c5a5 |
396 | static void REGPARM(3) *dr_lookup_block(u32 pc, int is_slave, int *tcache_id) |
397 | { |
398 | block_desc *bd = NULL; |
399 | void *block = NULL; |
400 | |
401 | bd = dr_get_bd(pc, is_slave, tcache_id); |
402 | if (bd != NULL) |
403 | block = bd->tcache_ptr; |
404 | |
fcdefcf6 |
405 | #if (DRC_DEBUG & 2) |
a2b8c5a5 |
406 | if (bd != NULL) |
407 | bd->refcount++; |
408 | #endif |
409 | return block; |
410 | } |
411 | |
c25d78ee |
412 | static void *dr_failure(void) |
413 | { |
414 | lprintf("recompilation failed\n"); |
415 | exit(1); |
416 | } |
417 | |
a2b8c5a5 |
418 | static void *dr_prepare_ext_branch(u32 pc, SH2 *sh2, int tcache_id) |
419 | { |
420 | #if LINK_BRANCHES |
421 | int target_tcache_id; |
422 | void *target; |
423 | int ret; |
424 | |
425 | target = dr_lookup_block(pc, sh2->is_slave, &target_tcache_id); |
426 | if (target_tcache_id == tcache_id) { |
427 | // allow linking blocks only from local cache |
428 | ret = dr_add_block_link(pc, tcache_ptr, tcache_id); |
429 | if (ret < 0) |
430 | return NULL; |
431 | } |
432 | if (target == NULL || target_tcache_id != tcache_id) |
433 | target = sh2_drc_dispatcher; |
434 | |
435 | return target; |
436 | #else |
437 | return sh2_drc_dispatcher; |
438 | #endif |
439 | } |
440 | |
441 | static void dr_link_blocks(void *target, u32 pc, int tcache_id) |
442 | { |
443 | #if LINK_BRANCHES |
444 | block_link *bl = block_links[tcache_id]; |
445 | int cnt = block_link_counts[tcache_id]; |
446 | int i; |
447 | |
448 | for (i = 0; i < cnt; i++) { |
449 | if (bl[i].target_pc == pc) { |
fcdefcf6 |
450 | dbg(2, "- link from %p", bl[i].jump); |
a2b8c5a5 |
451 | emith_jump_patch(bl[i].jump, target); |
452 | // XXX: sync ARM caches (old jump should be fine)? |
453 | } |
454 | } |
455 | #endif |
456 | } |
457 | |
44e6452e |
458 | #define ADD_TO_ARRAY(array, count, item, failcode) \ |
459 | array[count++] = item; \ |
460 | if (count >= ARRAY_SIZE(array)) { \ |
fcdefcf6 |
461 | dbg(1, "warning: " #array " overflow"); \ |
44e6452e |
462 | failcode; \ |
463 | } |
464 | |
a2b8c5a5 |
465 | static int find_in_array(u32 *array, size_t size, u32 what) |
18b94127 |
466 | { |
467 | size_t i; |
468 | for (i = 0; i < size; i++) |
469 | if (what == array[i]) |
470 | return i; |
471 | |
472 | return -1; |
473 | } |
679af8a3 |
474 | |
475 | // --------------------------------------------------------------- |
476 | |
a2b8c5a5 |
477 | // register cache / constant propagation stuff |
23686515 |
478 | typedef enum { |
479 | RC_GR_READ, |
480 | RC_GR_WRITE, |
481 | RC_GR_RMW, |
482 | } rc_gr_mode; |
483 | |
484 | static int rcache_get_reg_(sh2_reg_e r, rc_gr_mode mode, int do_locking); |
485 | |
486 | // guest regs with constants |
487 | static u32 dr_gcregs[24]; |
488 | // a mask of constant/dirty regs |
489 | static u32 dr_gcregs_mask; |
490 | static u32 dr_gcregs_dirty; |
491 | |
a2b8c5a5 |
492 | #if PROPAGATE_CONSTANTS |
23686515 |
493 | static void gconst_new(sh2_reg_e r, u32 val) |
494 | { |
23686515 |
495 | int i; |
496 | |
497 | dr_gcregs_mask |= 1 << r; |
498 | dr_gcregs_dirty |= 1 << r; |
499 | dr_gcregs[r] = val; |
500 | |
501 | // throw away old r that we might have cached |
502 | for (i = ARRAY_SIZE(reg_temp) - 1; i >= 0; i--) { |
503 | if ((reg_temp[i].type == HR_CACHED) && |
504 | reg_temp[i].greg == r) { |
505 | reg_temp[i].type = HR_FREE; |
506 | reg_temp[i].flags = 0; |
507 | } |
508 | } |
23686515 |
509 | } |
a2b8c5a5 |
510 | #endif |
23686515 |
511 | |
512 | static int gconst_get(sh2_reg_e r, u32 *val) |
513 | { |
514 | if (dr_gcregs_mask & (1 << r)) { |
515 | *val = dr_gcregs[r]; |
516 | return 1; |
517 | } |
518 | return 0; |
519 | } |
520 | |
521 | static int gconst_check(sh2_reg_e r) |
522 | { |
523 | if ((dr_gcregs_mask | dr_gcregs_dirty) & (1 << r)) |
524 | return 1; |
525 | return 0; |
526 | } |
527 | |
528 | // update hr if dirty, else do nothing |
529 | static int gconst_try_read(int hr, sh2_reg_e r) |
530 | { |
531 | if (dr_gcregs_dirty & (1 << r)) { |
532 | emith_move_r_imm(hr, dr_gcregs[r]); |
533 | dr_gcregs_dirty &= ~(1 << r); |
534 | return 1; |
535 | } |
536 | return 0; |
537 | } |
538 | |
539 | static void gconst_check_evict(sh2_reg_e r) |
540 | { |
541 | if (dr_gcregs_mask & (1 << r)) |
542 | // no longer cached in reg, make dirty again |
543 | dr_gcregs_dirty |= 1 << r; |
544 | } |
545 | |
546 | static void gconst_kill(sh2_reg_e r) |
547 | { |
548 | dr_gcregs_mask &= ~(1 << r); |
549 | dr_gcregs_dirty &= ~(1 << r); |
550 | } |
551 | |
552 | static void gconst_clean(void) |
553 | { |
554 | int i; |
555 | |
556 | for (i = 0; i < ARRAY_SIZE(dr_gcregs); i++) |
557 | if (dr_gcregs_dirty & (1 << i)) { |
558 | // using RC_GR_READ here: it will call gconst_try_read, |
559 | // cache the reg and mark it dirty. |
560 | rcache_get_reg_(i, RC_GR_READ, 0); |
561 | } |
562 | } |
563 | |
564 | static void gconst_invalidate(void) |
565 | { |
566 | dr_gcregs_mask = dr_gcregs_dirty = 0; |
567 | } |
568 | |
c18edb34 |
569 | static u16 rcache_counter; |
570 | |
571 | static temp_reg_t *rcache_evict(void) |
41397701 |
572 | { |
c18edb34 |
573 | // evict reg with oldest stamp |
574 | int i, oldest = -1; |
575 | u16 min_stamp = (u16)-1; |
576 | |
577 | for (i = 0; i < ARRAY_SIZE(reg_temp); i++) { |
23686515 |
578 | if (reg_temp[i].type == HR_CACHED && !(reg_temp[i].flags & HRF_LOCKED) && |
579 | reg_temp[i].stamp <= min_stamp) { |
580 | min_stamp = reg_temp[i].stamp; |
581 | oldest = i; |
582 | } |
c18edb34 |
583 | } |
584 | |
585 | if (oldest == -1) { |
80599a42 |
586 | printf("no registers to evict, aborting\n"); |
c18edb34 |
587 | exit(1); |
588 | } |
589 | |
590 | i = oldest; |
23686515 |
591 | if (reg_temp[i].type == HR_CACHED) { |
592 | if (reg_temp[i].flags & HRF_DIRTY) |
593 | // writeback |
594 | emith_ctx_write(reg_temp[i].hreg, reg_temp[i].greg * 4); |
595 | gconst_check_evict(reg_temp[i].greg); |
c18edb34 |
596 | } |
597 | |
23686515 |
598 | reg_temp[i].type = HR_FREE; |
599 | reg_temp[i].flags = 0; |
c18edb34 |
600 | return ®_temp[i]; |
679af8a3 |
601 | } |
602 | |
23686515 |
603 | static int get_reg_static(sh2_reg_e r, rc_gr_mode mode) |
604 | { |
605 | int i = reg_map_g2h[r]; |
606 | if (i != -1) { |
607 | if (mode != RC_GR_WRITE) |
608 | gconst_try_read(i, r); |
609 | } |
610 | return i; |
611 | } |
c18edb34 |
612 | |
80599a42 |
613 | // note: must not be called when doing conditional code |
23686515 |
614 | static int rcache_get_reg_(sh2_reg_e r, rc_gr_mode mode, int do_locking) |
679af8a3 |
615 | { |
c18edb34 |
616 | temp_reg_t *tr; |
23686515 |
617 | int i, ret; |
c18edb34 |
618 | |
23686515 |
619 | // maybe statically mapped? |
620 | ret = get_reg_static(r, mode); |
621 | if (ret != -1) |
622 | goto end; |
679af8a3 |
623 | |
c18edb34 |
624 | rcache_counter++; |
625 | |
626 | // maybe already cached? |
23686515 |
627 | // if so, prefer against gconst (they must be in sync) |
c18edb34 |
628 | for (i = ARRAY_SIZE(reg_temp) - 1; i >= 0; i--) { |
23686515 |
629 | if (reg_temp[i].type == HR_CACHED && reg_temp[i].greg == r) { |
c18edb34 |
630 | reg_temp[i].stamp = rcache_counter; |
631 | if (mode != RC_GR_READ) |
23686515 |
632 | reg_temp[i].flags |= HRF_DIRTY; |
633 | ret = reg_temp[i].hreg; |
634 | goto end; |
c18edb34 |
635 | } |
679af8a3 |
636 | } |
637 | |
c18edb34 |
638 | // use any free reg |
639 | for (i = ARRAY_SIZE(reg_temp) - 1; i >= 0; i--) { |
23686515 |
640 | if (reg_temp[i].type == HR_FREE) { |
c18edb34 |
641 | tr = ®_temp[i]; |
642 | goto do_alloc; |
643 | } |
644 | } |
645 | |
646 | tr = rcache_evict(); |
647 | |
648 | do_alloc: |
23686515 |
649 | tr->type = HR_CACHED; |
650 | if (do_locking) |
651 | tr->flags |= HRF_LOCKED; |
652 | if (mode != RC_GR_READ) |
653 | tr->flags |= HRF_DIRTY; |
654 | tr->greg = r; |
c18edb34 |
655 | tr->stamp = rcache_counter; |
23686515 |
656 | ret = tr->hreg; |
657 | |
658 | if (mode != RC_GR_WRITE) { |
659 | if (gconst_check(r)) { |
660 | if (gconst_try_read(ret, r)) |
661 | tr->flags |= HRF_DIRTY; |
662 | } |
663 | else |
664 | emith_ctx_read(tr->hreg, r * 4); |
665 | } |
666 | |
667 | end: |
668 | if (mode != RC_GR_READ) |
669 | gconst_kill(r); |
670 | |
671 | return ret; |
672 | } |
673 | |
674 | static int rcache_get_reg(sh2_reg_e r, rc_gr_mode mode) |
675 | { |
676 | return rcache_get_reg_(r, mode, 1); |
679af8a3 |
677 | } |
678 | |
c18edb34 |
679 | static int rcache_get_tmp(void) |
679af8a3 |
680 | { |
c18edb34 |
681 | temp_reg_t *tr; |
682 | int i; |
683 | |
684 | for (i = 0; i < ARRAY_SIZE(reg_temp); i++) |
23686515 |
685 | if (reg_temp[i].type == HR_FREE) { |
c18edb34 |
686 | tr = ®_temp[i]; |
687 | goto do_alloc; |
688 | } |
689 | |
690 | tr = rcache_evict(); |
691 | |
692 | do_alloc: |
693 | tr->type = HR_TEMP; |
23686515 |
694 | return tr->hreg; |
c18edb34 |
695 | } |
696 | |
80599a42 |
697 | static int rcache_get_arg_id(int arg) |
698 | { |
699 | int i, r = 0; |
700 | host_arg2reg(r, arg); |
701 | |
702 | for (i = 0; i < ARRAY_SIZE(reg_temp); i++) |
23686515 |
703 | if (reg_temp[i].hreg == r) |
80599a42 |
704 | break; |
705 | |
04092e32 |
706 | if (i == ARRAY_SIZE(reg_temp)) // can't happen |
707 | exit(1); |
80599a42 |
708 | |
23686515 |
709 | if (reg_temp[i].type == HR_CACHED) { |
80599a42 |
710 | // writeback |
23686515 |
711 | if (reg_temp[i].flags & HRF_DIRTY) |
712 | emith_ctx_write(reg_temp[i].hreg, reg_temp[i].greg * 4); |
713 | gconst_check_evict(reg_temp[i].greg); |
80599a42 |
714 | } |
715 | else if (reg_temp[i].type == HR_TEMP) { |
716 | printf("arg %d reg %d already used, aborting\n", arg, r); |
717 | exit(1); |
718 | } |
719 | |
23686515 |
720 | reg_temp[i].type = HR_FREE; |
721 | reg_temp[i].flags = 0; |
722 | |
80599a42 |
723 | return i; |
724 | } |
725 | |
726 | // get a reg to be used as function arg |
80599a42 |
727 | static int rcache_get_tmp_arg(int arg) |
728 | { |
729 | int id = rcache_get_arg_id(arg); |
730 | reg_temp[id].type = HR_TEMP; |
731 | |
23686515 |
732 | return reg_temp[id].hreg; |
80599a42 |
733 | } |
734 | |
23686515 |
735 | // same but caches a reg. RC_GR_READ only. |
80599a42 |
736 | static int rcache_get_reg_arg(int arg, sh2_reg_e r) |
737 | { |
738 | int i, srcr, dstr, dstid; |
04092e32 |
739 | int dirty = 0, src_dirty = 0; |
80599a42 |
740 | |
741 | dstid = rcache_get_arg_id(arg); |
23686515 |
742 | dstr = reg_temp[dstid].hreg; |
80599a42 |
743 | |
744 | // maybe already statically mapped? |
23686515 |
745 | srcr = get_reg_static(r, RC_GR_READ); |
80599a42 |
746 | if (srcr != -1) |
747 | goto do_cache; |
748 | |
749 | // maybe already cached? |
750 | for (i = ARRAY_SIZE(reg_temp) - 1; i >= 0; i--) { |
23686515 |
751 | if ((reg_temp[i].type == HR_CACHED) && |
752 | reg_temp[i].greg == r) |
80599a42 |
753 | { |
23686515 |
754 | srcr = reg_temp[i].hreg; |
04092e32 |
755 | if (reg_temp[i].flags & HRF_DIRTY) |
756 | src_dirty = 1; |
80599a42 |
757 | goto do_cache; |
758 | } |
759 | } |
760 | |
761 | // must read |
762 | srcr = dstr; |
23686515 |
763 | if (gconst_check(r)) { |
764 | if (gconst_try_read(srcr, r)) |
765 | dirty = 1; |
766 | } |
767 | else |
768 | emith_ctx_read(srcr, r * 4); |
80599a42 |
769 | |
770 | do_cache: |
23686515 |
771 | if (dstr != srcr) |
80599a42 |
772 | emith_move_r_r(dstr, srcr); |
04092e32 |
773 | #if 1 |
774 | else |
775 | dirty |= src_dirty; |
776 | |
777 | if (dirty) |
778 | // must clean, callers might want to modify the arg before call |
779 | emith_ctx_write(dstr, r * 4); |
780 | #else |
781 | if (dirty) |
782 | reg_temp[dstid].flags |= HRF_DIRTY; |
783 | #endif |
80599a42 |
784 | |
785 | reg_temp[dstid].stamp = ++rcache_counter; |
786 | reg_temp[dstid].type = HR_CACHED; |
23686515 |
787 | reg_temp[dstid].greg = r; |
788 | reg_temp[dstid].flags |= HRF_LOCKED; |
80599a42 |
789 | return dstr; |
790 | } |
791 | |
c18edb34 |
792 | static void rcache_free_tmp(int hr) |
793 | { |
794 | int i; |
795 | for (i = 0; i < ARRAY_SIZE(reg_temp); i++) |
23686515 |
796 | if (reg_temp[i].hreg == hr) |
c18edb34 |
797 | break; |
798 | |
80599a42 |
799 | if (i == ARRAY_SIZE(reg_temp) || reg_temp[i].type != HR_TEMP) { |
c18edb34 |
800 | printf("rcache_free_tmp fail: #%i hr %d, type %d\n", i, hr, reg_temp[i].type); |
80599a42 |
801 | return; |
802 | } |
803 | |
804 | reg_temp[i].type = HR_FREE; |
23686515 |
805 | reg_temp[i].flags = 0; |
806 | } |
807 | |
808 | static void rcache_unlock(int hr) |
809 | { |
810 | int i; |
811 | for (i = 0; i < ARRAY_SIZE(reg_temp); i++) |
812 | if (reg_temp[i].type == HR_CACHED && reg_temp[i].hreg == hr) |
813 | reg_temp[i].flags &= ~HRF_LOCKED; |
814 | } |
815 | |
816 | static void rcache_unlock_all(void) |
817 | { |
818 | int i; |
819 | for (i = 0; i < ARRAY_SIZE(reg_temp); i++) |
820 | reg_temp[i].flags &= ~HRF_LOCKED; |
c18edb34 |
821 | } |
822 | |
80599a42 |
823 | static void rcache_clean(void) |
c18edb34 |
824 | { |
825 | int i; |
23686515 |
826 | gconst_clean(); |
827 | |
80599a42 |
828 | for (i = 0; i < ARRAY_SIZE(reg_temp); i++) |
23686515 |
829 | if (reg_temp[i].type == HR_CACHED && (reg_temp[i].flags & HRF_DIRTY)) { |
c18edb34 |
830 | // writeback |
23686515 |
831 | emith_ctx_write(reg_temp[i].hreg, reg_temp[i].greg * 4); |
832 | reg_temp[i].flags &= ~HRF_DIRTY; |
c18edb34 |
833 | } |
80599a42 |
834 | } |
835 | |
836 | static void rcache_invalidate(void) |
837 | { |
838 | int i; |
23686515 |
839 | for (i = 0; i < ARRAY_SIZE(reg_temp); i++) { |
c18edb34 |
840 | reg_temp[i].type = HR_FREE; |
23686515 |
841 | reg_temp[i].flags = 0; |
842 | } |
c18edb34 |
843 | rcache_counter = 0; |
23686515 |
844 | |
845 | gconst_invalidate(); |
c18edb34 |
846 | } |
847 | |
80599a42 |
848 | static void rcache_flush(void) |
849 | { |
850 | rcache_clean(); |
851 | rcache_invalidate(); |
852 | } |
853 | |
c18edb34 |
854 | // --------------------------------------------------------------- |
855 | |
23686515 |
856 | static int emit_get_rbase_and_offs(u32 a, u32 *offs) |
857 | { |
23686515 |
858 | u32 mask = 0; |
a2b8c5a5 |
859 | int poffs; |
23686515 |
860 | int hr; |
861 | |
a2b8c5a5 |
862 | poffs = dr_ctx_get_mem_ptr(a, &mask); |
23686515 |
863 | if (poffs == -1) |
864 | return -1; |
865 | |
a2b8c5a5 |
866 | // XXX: could use some related reg |
23686515 |
867 | hr = rcache_get_tmp(); |
868 | emith_ctx_read(hr, poffs); |
869 | emith_add_r_imm(hr, a & mask & ~0xff); |
870 | *offs = a & 0xff; // XXX: ARM oriented.. |
871 | return hr; |
872 | } |
873 | |
c18edb34 |
874 | static void emit_move_r_imm32(sh2_reg_e dst, u32 imm) |
875 | { |
23686515 |
876 | #if PROPAGATE_CONSTANTS |
877 | gconst_new(dst, imm); |
878 | #else |
c18edb34 |
879 | int hr = rcache_get_reg(dst, RC_GR_WRITE); |
880 | emith_move_r_imm(hr, imm); |
23686515 |
881 | #endif |
c18edb34 |
882 | } |
883 | |
884 | static void emit_move_r_r(sh2_reg_e dst, sh2_reg_e src) |
885 | { |
886 | int hr_d = rcache_get_reg(dst, RC_GR_WRITE); |
887 | int hr_s = rcache_get_reg(src, RC_GR_READ); |
888 | |
889 | emith_move_r_r(hr_d, hr_s); |
679af8a3 |
890 | } |
891 | |
52d759c3 |
892 | // T must be clear, and comparison done just before this |
893 | static void emit_or_t_if_eq(int srr) |
894 | { |
895 | EMITH_SJMP_START(DCOND_NE); |
896 | emith_or_r_imm_c(DCOND_EQ, srr, T); |
897 | EMITH_SJMP_END(DCOND_NE); |
898 | } |
899 | |
80599a42 |
900 | // arguments must be ready |
901 | // reg cache must be clean before call |
23686515 |
902 | static int emit_memhandler_read_(int size, int ram_check) |
679af8a3 |
903 | { |
b081408f |
904 | int arg0, arg1; |
905 | host_arg2reg(arg0, 0); |
906 | |
23686515 |
907 | rcache_clean(); |
908 | |
b081408f |
909 | // must writeback cycles for poll detection stuff |
23686515 |
910 | // FIXME: rm |
b081408f |
911 | if (reg_map_g2h[SHR_SR] != -1) |
912 | emith_ctx_write(reg_map_g2h[SHR_SR], SHR_SR * 4); |
23686515 |
913 | |
b081408f |
914 | arg1 = rcache_get_tmp_arg(1); |
915 | emith_move_r_r(arg1, CONTEXT_REG); |
916 | |
5686d931 |
917 | #ifndef PDB_NET |
23686515 |
918 | if (ram_check && Pico.rom == (void *)0x02000000 && Pico32xMem->sdram == (void *)0x06000000) { |
b081408f |
919 | int tmp = rcache_get_tmp(); |
920 | emith_and_r_r_imm(tmp, arg0, 0xfb000000); |
921 | emith_cmp_r_imm(tmp, 0x02000000); |
922 | switch (size) { |
923 | case 0: // 8 |
924 | EMITH_SJMP3_START(DCOND_NE); |
925 | emith_eor_r_imm_c(DCOND_EQ, arg0, 1); |
926 | emith_read8_r_r_offs_c(DCOND_EQ, arg0, arg0, 0); |
927 | EMITH_SJMP3_MID(DCOND_NE); |
5686d931 |
928 | emith_call_cond(DCOND_NE, sh2_drc_read8); |
b081408f |
929 | EMITH_SJMP3_END(); |
930 | break; |
931 | case 1: // 16 |
932 | EMITH_SJMP3_START(DCOND_NE); |
933 | emith_read16_r_r_offs_c(DCOND_EQ, arg0, arg0, 0); |
934 | EMITH_SJMP3_MID(DCOND_NE); |
5686d931 |
935 | emith_call_cond(DCOND_NE, sh2_drc_read16); |
b081408f |
936 | EMITH_SJMP3_END(); |
937 | break; |
938 | case 2: // 32 |
939 | EMITH_SJMP3_START(DCOND_NE); |
940 | emith_read_r_r_offs_c(DCOND_EQ, arg0, arg0, 0); |
941 | emith_ror_c(DCOND_EQ, arg0, arg0, 16); |
942 | EMITH_SJMP3_MID(DCOND_NE); |
5686d931 |
943 | emith_call_cond(DCOND_NE, sh2_drc_read32); |
b081408f |
944 | EMITH_SJMP3_END(); |
945 | break; |
946 | } |
947 | } |
948 | else |
949 | #endif |
950 | { |
951 | switch (size) { |
952 | case 0: // 8 |
5686d931 |
953 | emith_call(sh2_drc_read8); |
b081408f |
954 | break; |
955 | case 1: // 16 |
5686d931 |
956 | emith_call(sh2_drc_read16); |
b081408f |
957 | break; |
958 | case 2: // 32 |
5686d931 |
959 | emith_call(sh2_drc_read32); |
b081408f |
960 | break; |
961 | } |
679af8a3 |
962 | } |
80599a42 |
963 | rcache_invalidate(); |
97e95a29 |
964 | |
965 | if (reg_map_g2h[SHR_SR] != -1) |
966 | emith_ctx_read(reg_map_g2h[SHR_SR], SHR_SR * 4); |
967 | |
80599a42 |
968 | // assuming arg0 and retval reg matches |
969 | return rcache_get_tmp_arg(0); |
970 | } |
679af8a3 |
971 | |
23686515 |
972 | static int emit_memhandler_read(int size) |
973 | { |
974 | return emit_memhandler_read_(size, 1); |
975 | } |
976 | |
977 | static int emit_memhandler_read_rr(sh2_reg_e rd, sh2_reg_e rs, u32 offs, int size) |
978 | { |
979 | int hr, hr2, ram_check = 1; |
980 | u32 val, offs2; |
981 | |
982 | if (gconst_get(rs, &val)) { |
983 | hr = emit_get_rbase_and_offs(val + offs, &offs2); |
984 | if (hr != -1) { |
985 | hr2 = rcache_get_reg(rd, RC_GR_WRITE); |
986 | switch (size) { |
987 | case 0: // 8 |
988 | emith_read8_r_r_offs(hr2, hr, offs2 ^ 1); |
989 | emith_sext(hr2, hr2, 8); |
990 | break; |
991 | case 1: // 16 |
992 | emith_read16_r_r_offs(hr2, hr, offs2); |
993 | emith_sext(hr2, hr2, 16); |
994 | break; |
995 | case 2: // 32 |
996 | emith_read_r_r_offs(hr2, hr, offs2); |
997 | emith_ror(hr2, hr2, 16); |
998 | break; |
999 | } |
1000 | rcache_free_tmp(hr); |
1001 | return hr2; |
1002 | } |
1003 | |
1004 | ram_check = 0; |
1005 | } |
1006 | |
1007 | hr = rcache_get_reg_arg(0, rs); |
1008 | if (offs != 0) |
1009 | emith_add_r_imm(hr, offs); |
1010 | hr = emit_memhandler_read_(size, ram_check); |
1011 | hr2 = rcache_get_reg(rd, RC_GR_WRITE); |
1012 | if (size != 2) { |
1013 | emith_sext(hr2, hr, (size == 1) ? 16 : 8); |
1014 | } else |
1015 | emith_move_r_r(hr2, hr); |
1016 | rcache_free_tmp(hr); |
1017 | |
1018 | return hr2; |
1019 | } |
1020 | |
e05b81fc |
1021 | static void emit_memhandler_write(int size, u32 pc, int delay) |
80599a42 |
1022 | { |
1023 | int ctxr; |
1024 | host_arg2reg(ctxr, 2); |
97e95a29 |
1025 | if (reg_map_g2h[SHR_SR] != -1) |
1026 | emith_ctx_write(reg_map_g2h[SHR_SR], SHR_SR * 4); |
1027 | |
80599a42 |
1028 | switch (size) { |
1029 | case 0: // 8 |
e05b81fc |
1030 | // XXX: consider inlining sh2_drc_write8 |
1031 | if (delay) { |
1032 | emith_call(sh2_drc_write8_slot); |
1033 | } else { |
1034 | emit_move_r_imm32(SHR_PC, pc); |
1035 | rcache_clean(); |
1036 | emith_call(sh2_drc_write8); |
1037 | } |
80599a42 |
1038 | break; |
1039 | case 1: // 16 |
e05b81fc |
1040 | if (delay) { |
1041 | emith_call(sh2_drc_write16_slot); |
1042 | } else { |
1043 | emit_move_r_imm32(SHR_PC, pc); |
1044 | rcache_clean(); |
1045 | emith_call(sh2_drc_write16); |
1046 | } |
80599a42 |
1047 | break; |
1048 | case 2: // 32 |
e05b81fc |
1049 | emith_move_r_r(ctxr, CONTEXT_REG); |
5686d931 |
1050 | emith_call(sh2_drc_write32); |
80599a42 |
1051 | break; |
1052 | } |
97e95a29 |
1053 | |
1054 | if (reg_map_g2h[SHR_SR] != -1) |
1055 | emith_ctx_read(reg_map_g2h[SHR_SR], SHR_SR * 4); |
80599a42 |
1056 | rcache_invalidate(); |
679af8a3 |
1057 | } |
80599a42 |
1058 | |
52d759c3 |
1059 | // @(Rx,Ry) |
1060 | static int emit_indirect_indexed_read(int rx, int ry, int size) |
1061 | { |
1062 | int a0, t; |
52d759c3 |
1063 | a0 = rcache_get_reg_arg(0, rx); |
1064 | t = rcache_get_reg(ry, RC_GR_READ); |
1065 | emith_add_r_r(a0, t); |
1066 | return emit_memhandler_read(size); |
1067 | } |
1068 | |
f0d7b1fa |
1069 | // read @Rn, @rm |
1070 | static void emit_indirect_read_double(u32 *rnr, u32 *rmr, int rn, int rm, int size) |
1071 | { |
1072 | int tmp; |
1073 | |
f0d7b1fa |
1074 | rcache_get_reg_arg(0, rn); |
1075 | tmp = emit_memhandler_read(size); |
1076 | emith_ctx_write(tmp, offsetof(SH2, drc_tmp)); |
1077 | rcache_free_tmp(tmp); |
1078 | tmp = rcache_get_reg(rn, RC_GR_RMW); |
1079 | emith_add_r_imm(tmp, 1 << size); |
23686515 |
1080 | rcache_unlock(tmp); |
f0d7b1fa |
1081 | |
f0d7b1fa |
1082 | rcache_get_reg_arg(0, rm); |
1083 | *rmr = emit_memhandler_read(size); |
1084 | *rnr = rcache_get_tmp(); |
1085 | emith_ctx_read(*rnr, offsetof(SH2, drc_tmp)); |
1086 | tmp = rcache_get_reg(rm, RC_GR_RMW); |
1087 | emith_add_r_imm(tmp, 1 << size); |
23686515 |
1088 | rcache_unlock(tmp); |
f0d7b1fa |
1089 | } |
1090 | |
8796b7ee |
1091 | static void emit_do_static_regs(int is_write, int tmpr) |
f0d7b1fa |
1092 | { |
8796b7ee |
1093 | int i, r, count; |
1094 | |
1095 | for (i = 0; i < ARRAY_SIZE(reg_map_g2h); i++) { |
1096 | r = reg_map_g2h[i]; |
1097 | if (r == -1) |
1098 | continue; |
1099 | |
1100 | for (count = 1; i < ARRAY_SIZE(reg_map_g2h) - 1; i++, r++) { |
1101 | if (reg_map_g2h[i + 1] != r + 1) |
1102 | break; |
1103 | count++; |
1104 | } |
1105 | |
1106 | if (count > 1) { |
1107 | // i, r point to last item |
1108 | if (is_write) |
1109 | emith_ctx_write_multiple(r - count + 1, (i - count + 1) * 4, count, tmpr); |
1110 | else |
1111 | emith_ctx_read_multiple(r - count + 1, (i - count + 1) * 4, count, tmpr); |
1112 | } else { |
1113 | if (is_write) |
1114 | emith_ctx_write(r, i * 4); |
1115 | else |
1116 | emith_ctx_read(r, i * 4); |
1117 | } |
f0d7b1fa |
1118 | } |
1119 | } |
1120 | |
e05b81fc |
1121 | static void emit_block_entry(void) |
f0d7b1fa |
1122 | { |
c25d78ee |
1123 | int arg0; |
8796b7ee |
1124 | |
e05b81fc |
1125 | host_arg2reg(arg0, 0); |
c25d78ee |
1126 | |
1127 | #if (DRC_DEBUG & 8) || defined(PDB) |
1128 | int arg1, arg2; |
e05b81fc |
1129 | host_arg2reg(arg1, 1); |
1130 | host_arg2reg(arg2, 2); |
8796b7ee |
1131 | |
5686d931 |
1132 | emit_do_static_regs(1, arg2); |
e05b81fc |
1133 | emith_move_r_r(arg1, CONTEXT_REG); |
1134 | emith_move_r_r(arg2, rcache_get_reg(SHR_SR, RC_GR_READ)); |
5686d931 |
1135 | emith_call(sh2_drc_log_entry); |
e05b81fc |
1136 | rcache_invalidate(); |
1137 | #endif |
1138 | emith_tst_r_r(arg0, arg0); |
1139 | EMITH_SJMP_START(DCOND_EQ); |
1140 | emith_jump_reg_c(DCOND_NE, arg0); |
1141 | EMITH_SJMP_END(DCOND_EQ); |
1142 | } |
8796b7ee |
1143 | |
e898de13 |
1144 | #define DELAYED_OP \ |
18b94127 |
1145 | drcf.delayed_op = 2 |
1146 | |
1147 | #define DELAY_SAVE_T(sr) { \ |
1148 | emith_bic_r_imm(sr, T_save); \ |
1149 | emith_tst_r_imm(sr, T); \ |
1150 | EMITH_SJMP_START(DCOND_EQ); \ |
1151 | emith_or_r_imm_c(DCOND_NE, sr, T_save); \ |
1152 | EMITH_SJMP_END(DCOND_EQ); \ |
1153 | drcf.use_saved_t = 1; \ |
1154 | } |
e898de13 |
1155 | |
e05b81fc |
1156 | #define FLUSH_CYCLES(sr) \ |
1157 | if (cycles > 0) { \ |
1158 | emith_sub_r_imm(sr, cycles << 12); \ |
1159 | cycles = 0; \ |
1160 | } |
1161 | |
e898de13 |
1162 | #define CHECK_UNHANDLED_BITS(mask) { \ |
1163 | if ((op & (mask)) != 0) \ |
1164 | goto default_; \ |
1165 | } |
1166 | |
80599a42 |
1167 | #define GET_Fx() \ |
1168 | ((op >> 4) & 0x0f) |
1169 | |
1170 | #define GET_Rm GET_Fx |
1171 | |
1172 | #define GET_Rn() \ |
1173 | ((op >> 8) & 0x0f) |
1174 | |
ed8cf79b |
1175 | #define CHECK_FX_LT(n) \ |
52d759c3 |
1176 | if (GET_Fx() >= n) \ |
80599a42 |
1177 | goto default_ |
1178 | |
00faec9c |
1179 | static void *dr_get_pc_base(u32 pc, int is_slave); |
18b94127 |
1180 | |
e05b81fc |
1181 | static void REGPARM(2) *sh2_translate(SH2 *sh2, int tcache_id) |
679af8a3 |
1182 | { |
18b94127 |
1183 | // XXX: maybe use structs instead? |
18b94127 |
1184 | u32 branch_target_pc[MAX_LOCAL_BRANCHES]; |
a2b8c5a5 |
1185 | void *branch_target_ptr[MAX_LOCAL_BRANCHES]; |
1186 | int branch_target_blkid[MAX_LOCAL_BRANCHES]; |
18b94127 |
1187 | int branch_target_count = 0; |
1188 | void *branch_patch_ptr[MAX_LOCAL_BRANCHES]; |
1189 | u32 branch_patch_pc[MAX_LOCAL_BRANCHES]; |
1190 | int branch_patch_count = 0; |
04092e32 |
1191 | u32 literal_addr[MAX_LITERALS]; |
1192 | int literal_addr_count = 0; |
44e6452e |
1193 | int pending_branch_cond = -1; |
1194 | int pending_branch_pc = 0; |
00faec9c |
1195 | u8 op_flags[BLOCK_CYCLE_LIMIT]; |
18b94127 |
1196 | struct { |
1197 | u32 delayed_op:2; |
1198 | u32 test_irq:1; |
1199 | u32 use_saved_t:1; // delayed op modifies T |
1200 | } drcf = { 0, }; |
1201 | |
44e6452e |
1202 | // PC of current, first, last, last_target_blk SH2 insn |
1203 | u32 pc, base_pc, end_pc, out_pc; |
f4bb5d6b |
1204 | void *block_entry; |
679af8a3 |
1205 | block_desc *this_block; |
23686515 |
1206 | u16 *dr_pc_base; |
18b94127 |
1207 | int blkid_main = 0; |
23686515 |
1208 | int skip_op = 0; |
18b94127 |
1209 | u32 tmp, tmp2; |
1210 | int cycles; |
1211 | int op; |
1212 | int i; |
1213 | |
1214 | base_pc = sh2->pc; |
679af8a3 |
1215 | |
23686515 |
1216 | // get base/validate PC |
1217 | dr_pc_base = dr_get_pc_base(base_pc, sh2->is_slave); |
1218 | if (dr_pc_base == (void *)-1) { |
18b94127 |
1219 | printf("invalid PC, aborting: %08x\n", base_pc); |
f4bb5d6b |
1220 | // FIXME: be less destructive |
1221 | exit(1); |
1222 | } |
1223 | |
f4bb5d6b |
1224 | tcache_ptr = tcache_ptrs[tcache_id]; |
a2b8c5a5 |
1225 | this_block = dr_add_block(base_pc, sh2->is_slave, &blkid_main); |
44e6452e |
1226 | if (this_block == NULL) |
1227 | return NULL; |
f4bb5d6b |
1228 | |
18b94127 |
1229 | // predict tcache overflow |
f4bb5d6b |
1230 | tmp = tcache_ptr - tcache_bases[tcache_id]; |
44e6452e |
1231 | if (tmp > tcache_sizes[tcache_id] - MAX_BLOCK_SIZE) { |
fcdefcf6 |
1232 | dbg(1, "tcache %d overflow", tcache_id); |
18b94127 |
1233 | return NULL; |
44e6452e |
1234 | } |
18b94127 |
1235 | |
1236 | block_entry = tcache_ptr; |
fcdefcf6 |
1237 | dbg(2, "== %csh2 block #%d,%d %08x -> %p", sh2->is_slave ? 's' : 'm', |
18b94127 |
1238 | tcache_id, blkid_main, base_pc, block_entry); |
1239 | |
44e6452e |
1240 | dr_link_blocks(tcache_ptr, base_pc, tcache_id); |
1241 | |
18b94127 |
1242 | // 1st pass: scan forward for local branches |
00faec9c |
1243 | scan_block(base_pc, sh2->is_slave, op_flags, &end_pc); |
1244 | |
1245 | // collect branch_targets that don't land on delay slots |
1246 | for (pc = base_pc; pc <= end_pc; pc += 2) { |
1247 | if (!(OP_FLAGS(pc) & OF_TARGET)) |
1248 | continue; |
1249 | if (OP_FLAGS(pc) & OF_DELAY_OP) { |
1250 | OP_FLAGS(pc) &= ~OF_TARGET; |
18b94127 |
1251 | continue; |
1252 | } |
00faec9c |
1253 | ADD_TO_ARRAY(branch_target_pc, branch_target_count, pc, break); |
e898de13 |
1254 | } |
c25d78ee |
1255 | |
c25d78ee |
1256 | if (branch_target_count > 0) { |
1257 | memset(branch_target_ptr, 0, sizeof(branch_target_ptr[0]) * branch_target_count); |
1258 | memset(branch_target_blkid, 0, sizeof(branch_target_blkid[0]) * branch_target_count); |
1259 | } |
679af8a3 |
1260 | |
18b94127 |
1261 | // ------------------------------------------------- |
1262 | // 2nd pass: actual compilation |
44e6452e |
1263 | out_pc = 0; |
18b94127 |
1264 | pc = base_pc; |
1265 | for (cycles = 0; pc <= end_pc || drcf.delayed_op; ) |
679af8a3 |
1266 | { |
18b94127 |
1267 | u32 tmp3, tmp4, sr; |
1268 | |
1269 | if (drcf.delayed_op > 0) |
1270 | drcf.delayed_op--; |
1271 | |
23686515 |
1272 | op = FETCH_OP(pc); |
1273 | |
00faec9c |
1274 | if ((OP_FLAGS(pc) & OF_TARGET) || pc == base_pc) |
18b94127 |
1275 | { |
00faec9c |
1276 | i = find_in_array(branch_target_pc, branch_target_count, pc); |
a2b8c5a5 |
1277 | if (pc != base_pc) |
18b94127 |
1278 | { |
1279 | /* make "subblock" - just a mid-block entry */ |
1280 | block_desc *subblock; |
18b94127 |
1281 | |
1282 | sr = rcache_get_reg(SHR_SR, RC_GR_RMW); |
e05b81fc |
1283 | FLUSH_CYCLES(sr); |
23686515 |
1284 | // decide if to flush rcache |
1285 | if ((op & 0xf0ff) == 0x4010 && FETCH_OP(pc + 2) == 0x8bfd) // DT; BF #-2 |
1286 | rcache_clean(); |
1287 | else |
1288 | rcache_flush(); |
18b94127 |
1289 | do_host_disasm(tcache_id); |
1290 | |
fcdefcf6 |
1291 | dbg(2, "-- %csh2 subblock #%d,%d %08x -> %p", sh2->is_slave ? 's' : 'm', |
04092e32 |
1292 | tcache_id, branch_target_blkid[i], pc, tcache_ptr); |
1293 | |
a2b8c5a5 |
1294 | subblock = dr_add_block(pc, sh2->is_slave, &branch_target_blkid[i]); |
18b94127 |
1295 | if (subblock == NULL) |
1296 | return NULL; |
18b94127 |
1297 | |
44e6452e |
1298 | // since we made a block entry, link any other blocks that jump to current pc |
1299 | dr_link_blocks(tcache_ptr, pc, tcache_id); |
18b94127 |
1300 | } |
04092e32 |
1301 | if (i >= 0) |
1302 | branch_target_ptr[i] = tcache_ptr; |
18b94127 |
1303 | |
1304 | // must update PC |
1305 | emit_move_r_imm32(SHR_PC, pc); |
1306 | rcache_clean(); |
1307 | |
1308 | // check cycles |
1309 | sr = rcache_get_reg(SHR_SR, RC_GR_READ); |
1310 | emith_cmp_r_imm(sr, 0); |
1311 | emith_jump_cond(DCOND_LE, sh2_drc_exit); |
23686515 |
1312 | do_host_disasm(tcache_id); |
04092e32 |
1313 | rcache_unlock_all(); |
18b94127 |
1314 | } |
e898de13 |
1315 | |
e898de13 |
1316 | #if (DRC_DEBUG & 2) |
fcdefcf6 |
1317 | insns_compiled++; |
00faec9c |
1318 | #endif |
fcdefcf6 |
1319 | #if (DRC_DEBUG & 4) |
e898de13 |
1320 | DasmSH2(sh2dasm_buff, pc, op); |
1321 | printf("%08x %04x %s\n", pc, op, sh2dasm_buff); |
1322 | #endif |
00faec9c |
1323 | #ifdef DRC_CMP |
1324 | //if (out_pc != 0 && out_pc != (u32)-1) |
1325 | // emit_move_r_imm32(SHR_PC, out_pc); |
1326 | //else |
1327 | if (!drcf.delayed_op) { |
1328 | emit_move_r_imm32(SHR_PC, pc); |
1329 | sr = rcache_get_reg(SHR_SR, RC_GR_RMW); |
1330 | FLUSH_CYCLES(sr); |
1331 | // rcache_clean(); // FIXME |
1332 | rcache_flush(); |
1333 | emit_do_static_regs(1, 0); |
1334 | emith_pass_arg_r(0, CONTEXT_REG); |
1335 | emith_call(do_sh2_cmp); |
1336 | } |
679af8a3 |
1337 | #endif |
679af8a3 |
1338 | |
1339 | pc += 2; |
1340 | cycles++; |
1341 | |
23686515 |
1342 | if (skip_op > 0) { |
1343 | skip_op--; |
1344 | continue; |
1345 | } |
1346 | |
679af8a3 |
1347 | switch ((op >> 12) & 0x0f) |
1348 | { |
3863edbd |
1349 | ///////////////////////////////////////////// |
679af8a3 |
1350 | case 0x00: |
80599a42 |
1351 | switch (op & 0x0f) |
1352 | { |
1353 | case 0x02: |
1354 | tmp = rcache_get_reg(GET_Rn(), RC_GR_WRITE); |
1355 | switch (GET_Fx()) |
1356 | { |
1357 | case 0: // STC SR,Rn 0000nnnn00000010 |
1358 | tmp2 = SHR_SR; |
1359 | break; |
1360 | case 1: // STC GBR,Rn 0000nnnn00010010 |
1361 | tmp2 = SHR_GBR; |
1362 | break; |
1363 | case 2: // STC VBR,Rn 0000nnnn00100010 |
1364 | tmp2 = SHR_VBR; |
1365 | break; |
1366 | default: |
1367 | goto default_; |
1368 | } |
ed8cf79b |
1369 | tmp3 = rcache_get_reg(tmp2, RC_GR_READ); |
1370 | emith_move_r_r(tmp, tmp3); |
1371 | if (tmp2 == SHR_SR) |
18b94127 |
1372 | emith_clear_msb(tmp, tmp, 22); // reserved bits defined by ISA as 0 |
80599a42 |
1373 | goto end_op; |
e898de13 |
1374 | case 0x03: |
1375 | CHECK_UNHANDLED_BITS(0xd0); |
1376 | // BRAF Rm 0000mmmm00100011 |
1377 | // BSRF Rm 0000mmmm00000011 |
679af8a3 |
1378 | DELAYED_OP; |
18b94127 |
1379 | tmp = rcache_get_reg(SHR_PC, RC_GR_WRITE); |
80599a42 |
1380 | tmp2 = rcache_get_reg(GET_Rn(), RC_GR_READ); |
c18edb34 |
1381 | emith_move_r_r(tmp, tmp2); |
18b94127 |
1382 | if (op & 0x20) |
1383 | emith_add_r_imm(tmp, pc + 2); |
1384 | else { // BSRF |
1385 | tmp3 = rcache_get_reg(SHR_PR, RC_GR_WRITE); |
1386 | emith_move_r_imm(tmp3, pc + 2); |
1387 | emith_add_r_r(tmp, tmp3); |
1388 | } |
44e6452e |
1389 | out_pc = (u32)-1; |
679af8a3 |
1390 | cycles++; |
e898de13 |
1391 | goto end_op; |
80599a42 |
1392 | case 0x04: // MOV.B Rm,@(R0,Rn) 0000nnnnmmmm0100 |
1393 | case 0x05: // MOV.W Rm,@(R0,Rn) 0000nnnnmmmm0101 |
1394 | case 0x06: // MOV.L Rm,@(R0,Rn) 0000nnnnmmmm0110 |
e05b81fc |
1395 | rcache_clean(); |
1396 | tmp = rcache_get_reg_arg(1, GET_Rm()); |
1397 | tmp2 = rcache_get_reg_arg(0, SHR_R0); |
1398 | tmp3 = rcache_get_reg(GET_Rn(), RC_GR_READ); |
1399 | emith_add_r_r(tmp2, tmp3); |
1400 | emit_memhandler_write(op & 3, pc, drcf.delayed_op); |
80599a42 |
1401 | goto end_op; |
1402 | case 0x07: |
1403 | // MUL.L Rm,Rn 0000nnnnmmmm0111 |
1404 | tmp = rcache_get_reg(GET_Rn(), RC_GR_READ); |
1405 | tmp2 = rcache_get_reg(GET_Rm(), RC_GR_READ); |
1406 | tmp3 = rcache_get_reg(SHR_MACL, RC_GR_WRITE); |
1407 | emith_mul(tmp3, tmp2, tmp); |
1408 | cycles++; |
1409 | goto end_op; |
1410 | case 0x08: |
1411 | CHECK_UNHANDLED_BITS(0xf00); |
1412 | switch (GET_Fx()) |
1413 | { |
1414 | case 0: // CLRT 0000000000001000 |
8796b7ee |
1415 | sr = rcache_get_reg(SHR_SR, RC_GR_RMW); |
18b94127 |
1416 | if (drcf.delayed_op) |
1417 | DELAY_SAVE_T(sr); |
8796b7ee |
1418 | emith_bic_r_imm(sr, T); |
80599a42 |
1419 | break; |
1420 | case 1: // SETT 0000000000011000 |
8796b7ee |
1421 | sr = rcache_get_reg(SHR_SR, RC_GR_RMW); |
18b94127 |
1422 | if (drcf.delayed_op) |
1423 | DELAY_SAVE_T(sr); |
8796b7ee |
1424 | emith_or_r_imm(sr, T); |
80599a42 |
1425 | break; |
1426 | case 2: // CLRMAC 0000000000101000 |
23686515 |
1427 | emit_move_r_imm32(SHR_MACL, 0); |
1428 | emit_move_r_imm32(SHR_MACH, 0); |
80599a42 |
1429 | break; |
1430 | default: |
1431 | goto default_; |
1432 | } |
1433 | goto end_op; |
e898de13 |
1434 | case 0x09: |
80599a42 |
1435 | switch (GET_Fx()) |
1436 | { |
1437 | case 0: // NOP 0000000000001001 |
1438 | CHECK_UNHANDLED_BITS(0xf00); |
1439 | break; |
1440 | case 1: // DIV0U 0000000000011001 |
1441 | CHECK_UNHANDLED_BITS(0xf00); |
8796b7ee |
1442 | sr = rcache_get_reg(SHR_SR, RC_GR_RMW); |
18b94127 |
1443 | if (drcf.delayed_op) |
1444 | DELAY_SAVE_T(sr); |
8796b7ee |
1445 | emith_bic_r_imm(sr, M|Q|T); |
80599a42 |
1446 | break; |
1447 | case 2: // MOVT Rn 0000nnnn00101001 |
8796b7ee |
1448 | sr = rcache_get_reg(SHR_SR, RC_GR_READ); |
80599a42 |
1449 | tmp2 = rcache_get_reg(GET_Rn(), RC_GR_WRITE); |
8796b7ee |
1450 | emith_clear_msb(tmp2, sr, 31); |
80599a42 |
1451 | break; |
1452 | default: |
1453 | goto default_; |
1454 | } |
1455 | goto end_op; |
1456 | case 0x0a: |
1457 | tmp = rcache_get_reg(GET_Rn(), RC_GR_WRITE); |
1458 | switch (GET_Fx()) |
1459 | { |
1460 | case 0: // STS MACH,Rn 0000nnnn00001010 |
ed8cf79b |
1461 | tmp2 = SHR_MACH; |
80599a42 |
1462 | break; |
1463 | case 1: // STS MACL,Rn 0000nnnn00011010 |
ed8cf79b |
1464 | tmp2 = SHR_MACL; |
80599a42 |
1465 | break; |
1466 | case 2: // STS PR,Rn 0000nnnn00101010 |
ed8cf79b |
1467 | tmp2 = SHR_PR; |
80599a42 |
1468 | break; |
1469 | default: |
1470 | goto default_; |
1471 | } |
ed8cf79b |
1472 | tmp2 = rcache_get_reg(tmp2, RC_GR_READ); |
80599a42 |
1473 | emith_move_r_r(tmp, tmp2); |
e898de13 |
1474 | goto end_op; |
1475 | case 0x0b: |
80599a42 |
1476 | CHECK_UNHANDLED_BITS(0xf00); |
1477 | switch (GET_Fx()) |
1478 | { |
1479 | case 0: // RTS 0000000000001011 |
1480 | DELAYED_OP; |
18b94127 |
1481 | emit_move_r_r(SHR_PC, SHR_PR); |
44e6452e |
1482 | out_pc = (u32)-1; |
e898de13 |
1483 | cycles++; |
80599a42 |
1484 | break; |
1485 | case 1: // SLEEP 0000000000011011 |
80599a42 |
1486 | tmp = rcache_get_reg(SHR_SR, RC_GR_RMW); |
1487 | emith_clear_msb(tmp, tmp, 20); // clear cycles |
44e6452e |
1488 | out_pc = out_pc - 2; |
80599a42 |
1489 | cycles = 1; |
e05b81fc |
1490 | goto end_op; |
80599a42 |
1491 | case 2: // RTE 0000000000101011 |
52d759c3 |
1492 | DELAYED_OP; |
52d759c3 |
1493 | // pop PC |
23686515 |
1494 | emit_memhandler_read_rr(SHR_PC, SHR_SP, 0, 2); |
52d759c3 |
1495 | // pop SR |
1496 | tmp = rcache_get_reg_arg(0, SHR_SP); |
1497 | emith_add_r_imm(tmp, 4); |
1498 | tmp = emit_memhandler_read(2); |
18b94127 |
1499 | sr = rcache_get_reg(SHR_SR, RC_GR_RMW); |
1500 | emith_write_sr(sr, tmp); |
52d759c3 |
1501 | rcache_free_tmp(tmp); |
1502 | tmp = rcache_get_reg(SHR_SP, RC_GR_RMW); |
1503 | emith_add_r_imm(tmp, 4*2); |
18b94127 |
1504 | drcf.test_irq = 1; |
44e6452e |
1505 | out_pc = (u32)-1; |
e898de13 |
1506 | cycles += 3; |
80599a42 |
1507 | break; |
1508 | default: |
1509 | goto default_; |
e898de13 |
1510 | } |
1511 | goto end_op; |
80599a42 |
1512 | case 0x0c: // MOV.B @(R0,Rm),Rn 0000nnnnmmmm1100 |
1513 | case 0x0d: // MOV.W @(R0,Rm),Rn 0000nnnnmmmm1101 |
1514 | case 0x0e: // MOV.L @(R0,Rm),Rn 0000nnnnmmmm1110 |
52d759c3 |
1515 | tmp = emit_indirect_indexed_read(SHR_R0, GET_Rm(), op & 3); |
80599a42 |
1516 | tmp2 = rcache_get_reg(GET_Rn(), RC_GR_WRITE); |
80599a42 |
1517 | if ((op & 3) != 2) { |
1518 | emith_sext(tmp2, tmp, (op & 1) ? 16 : 8); |
1519 | } else |
1520 | emith_move_r_r(tmp2, tmp); |
52d759c3 |
1521 | rcache_free_tmp(tmp); |
80599a42 |
1522 | goto end_op; |
1523 | case 0x0f: // MAC.L @Rm+,@Rn+ 0000nnnnmmmm1111 |
f0d7b1fa |
1524 | emit_indirect_read_double(&tmp, &tmp2, GET_Rn(), GET_Rm(), 2); |
f0d7b1fa |
1525 | tmp4 = rcache_get_reg(SHR_MACH, RC_GR_RMW); |
1526 | /* MS 16 MAC bits unused if saturated */ |
23686515 |
1527 | sr = rcache_get_reg(SHR_SR, RC_GR_READ); |
8796b7ee |
1528 | emith_tst_r_imm(sr, S); |
f0d7b1fa |
1529 | EMITH_SJMP_START(DCOND_EQ); |
1530 | emith_clear_msb_c(DCOND_NE, tmp4, tmp4, 16); |
1531 | EMITH_SJMP_END(DCOND_EQ); |
23686515 |
1532 | rcache_unlock(sr); |
f0d7b1fa |
1533 | tmp3 = rcache_get_reg(SHR_MACL, RC_GR_RMW); // might evict SR |
1534 | emith_mula_s64(tmp3, tmp4, tmp, tmp2); |
f0d7b1fa |
1535 | rcache_free_tmp(tmp2); |
8796b7ee |
1536 | sr = rcache_get_reg(SHR_SR, RC_GR_READ); // reget just in case |
1537 | emith_tst_r_imm(sr, S); |
1538 | |
1539 | EMITH_JMP_START(DCOND_EQ); |
1540 | emith_asr(tmp, tmp4, 15); |
1541 | emith_cmp_r_imm(tmp, -1); // negative overflow (0x80000000..0xffff7fff) |
1542 | EMITH_SJMP_START(DCOND_GE); |
1543 | emith_move_r_imm_c(DCOND_LT, tmp4, 0x8000); |
1544 | emith_move_r_imm_c(DCOND_LT, tmp3, 0x0000); |
1545 | EMITH_SJMP_END(DCOND_GE); |
1546 | emith_cmp_r_imm(tmp, 0); // positive overflow (0x00008000..0x7fffffff) |
1547 | EMITH_SJMP_START(DCOND_LE); |
1548 | emith_move_r_imm_c(DCOND_GT, tmp4, 0x00007fff); |
1549 | emith_move_r_imm_c(DCOND_GT, tmp3, 0xffffffff); |
1550 | EMITH_SJMP_END(DCOND_LE); |
1551 | EMITH_JMP_END(DCOND_EQ); |
1552 | |
1553 | rcache_free_tmp(tmp); |
f0d7b1fa |
1554 | cycles += 3; |
1555 | goto end_op; |
80599a42 |
1556 | } |
1557 | goto default_; |
1558 | |
3863edbd |
1559 | ///////////////////////////////////////////// |
80599a42 |
1560 | case 0x01: |
1561 | // MOV.L Rm,@(disp,Rn) 0001nnnnmmmmdddd |
1562 | rcache_clean(); |
1563 | tmp = rcache_get_reg_arg(0, GET_Rn()); |
1564 | tmp2 = rcache_get_reg_arg(1, GET_Rm()); |
23686515 |
1565 | if (op & 0x0f) |
1566 | emith_add_r_imm(tmp, (op & 0x0f) * 4); |
e05b81fc |
1567 | emit_memhandler_write(2, pc, drcf.delayed_op); |
80599a42 |
1568 | goto end_op; |
1569 | |
1570 | case 0x02: |
1571 | switch (op & 0x0f) |
1572 | { |
1573 | case 0x00: // MOV.B Rm,@Rn 0010nnnnmmmm0000 |
1574 | case 0x01: // MOV.W Rm,@Rn 0010nnnnmmmm0001 |
1575 | case 0x02: // MOV.L Rm,@Rn 0010nnnnmmmm0010 |
1576 | rcache_clean(); |
1577 | rcache_get_reg_arg(0, GET_Rn()); |
1578 | rcache_get_reg_arg(1, GET_Rm()); |
e05b81fc |
1579 | emit_memhandler_write(op & 3, pc, drcf.delayed_op); |
80599a42 |
1580 | goto end_op; |
1581 | case 0x04: // MOV.B Rm,@–Rn 0010nnnnmmmm0100 |
1582 | case 0x05: // MOV.W Rm,@–Rn 0010nnnnmmmm0101 |
1583 | case 0x06: // MOV.L Rm,@–Rn 0010nnnnmmmm0110 |
1584 | tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW); |
1585 | emith_sub_r_imm(tmp, (1 << (op & 3))); |
1586 | rcache_clean(); |
1587 | rcache_get_reg_arg(0, GET_Rn()); |
1588 | rcache_get_reg_arg(1, GET_Rm()); |
e05b81fc |
1589 | emit_memhandler_write(op & 3, pc, drcf.delayed_op); |
80599a42 |
1590 | goto end_op; |
1591 | case 0x07: // DIV0S Rm,Rn 0010nnnnmmmm0111 |
8796b7ee |
1592 | sr = rcache_get_reg(SHR_SR, RC_GR_RMW); |
80599a42 |
1593 | tmp2 = rcache_get_reg(GET_Rn(), RC_GR_READ); |
1594 | tmp3 = rcache_get_reg(GET_Rm(), RC_GR_READ); |
18b94127 |
1595 | if (drcf.delayed_op) |
1596 | DELAY_SAVE_T(sr); |
8796b7ee |
1597 | emith_bic_r_imm(sr, M|Q|T); |
80599a42 |
1598 | emith_tst_r_imm(tmp2, (1<<31)); |
1599 | EMITH_SJMP_START(DCOND_EQ); |
8796b7ee |
1600 | emith_or_r_imm_c(DCOND_NE, sr, Q); |
80599a42 |
1601 | EMITH_SJMP_END(DCOND_EQ); |
1602 | emith_tst_r_imm(tmp3, (1<<31)); |
1603 | EMITH_SJMP_START(DCOND_EQ); |
8796b7ee |
1604 | emith_or_r_imm_c(DCOND_NE, sr, M); |
80599a42 |
1605 | EMITH_SJMP_END(DCOND_EQ); |
1606 | emith_teq_r_r(tmp2, tmp3); |
1607 | EMITH_SJMP_START(DCOND_PL); |
8796b7ee |
1608 | emith_or_r_imm_c(DCOND_MI, sr, T); |
80599a42 |
1609 | EMITH_SJMP_END(DCOND_PL); |
1610 | goto end_op; |
3863edbd |
1611 | case 0x08: // TST Rm,Rn 0010nnnnmmmm1000 |
8796b7ee |
1612 | sr = rcache_get_reg(SHR_SR, RC_GR_RMW); |
3863edbd |
1613 | tmp2 = rcache_get_reg(GET_Rn(), RC_GR_READ); |
1614 | tmp3 = rcache_get_reg(GET_Rm(), RC_GR_READ); |
18b94127 |
1615 | if (drcf.delayed_op) |
1616 | DELAY_SAVE_T(sr); |
8796b7ee |
1617 | emith_bic_r_imm(sr, T); |
3863edbd |
1618 | emith_tst_r_r(tmp2, tmp3); |
8796b7ee |
1619 | emit_or_t_if_eq(sr); |
3863edbd |
1620 | goto end_op; |
1621 | case 0x09: // AND Rm,Rn 0010nnnnmmmm1001 |
1622 | tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW); |
1623 | tmp2 = rcache_get_reg(GET_Rm(), RC_GR_READ); |
1624 | emith_and_r_r(tmp, tmp2); |
1625 | goto end_op; |
1626 | case 0x0a: // XOR Rm,Rn 0010nnnnmmmm1010 |
1627 | tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW); |
1628 | tmp2 = rcache_get_reg(GET_Rm(), RC_GR_READ); |
1629 | emith_eor_r_r(tmp, tmp2); |
1630 | goto end_op; |
1631 | case 0x0b: // OR Rm,Rn 0010nnnnmmmm1011 |
1632 | tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW); |
1633 | tmp2 = rcache_get_reg(GET_Rm(), RC_GR_READ); |
1634 | emith_or_r_r(tmp, tmp2); |
1635 | goto end_op; |
1636 | case 0x0c: // CMP/STR Rm,Rn 0010nnnnmmmm1100 |
1637 | tmp = rcache_get_tmp(); |
1638 | tmp2 = rcache_get_reg(GET_Rn(), RC_GR_READ); |
1639 | tmp3 = rcache_get_reg(GET_Rm(), RC_GR_READ); |
1640 | emith_eor_r_r_r(tmp, tmp2, tmp3); |
8796b7ee |
1641 | sr = rcache_get_reg(SHR_SR, RC_GR_RMW); |
18b94127 |
1642 | if (drcf.delayed_op) |
1643 | DELAY_SAVE_T(sr); |
8796b7ee |
1644 | emith_bic_r_imm(sr, T); |
3863edbd |
1645 | emith_tst_r_imm(tmp, 0x000000ff); |
52d759c3 |
1646 | emit_or_t_if_eq(tmp); |
3863edbd |
1647 | emith_tst_r_imm(tmp, 0x0000ff00); |
52d759c3 |
1648 | emit_or_t_if_eq(tmp); |
3863edbd |
1649 | emith_tst_r_imm(tmp, 0x00ff0000); |
52d759c3 |
1650 | emit_or_t_if_eq(tmp); |
3863edbd |
1651 | emith_tst_r_imm(tmp, 0xff000000); |
52d759c3 |
1652 | emit_or_t_if_eq(tmp); |
3863edbd |
1653 | rcache_free_tmp(tmp); |
1654 | goto end_op; |
1655 | case 0x0d: // XTRCT Rm,Rn 0010nnnnmmmm1101 |
1656 | tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW); |
1657 | tmp2 = rcache_get_reg(GET_Rm(), RC_GR_READ); |
1658 | emith_lsr(tmp, tmp, 16); |
f0d7b1fa |
1659 | emith_or_r_r_lsl(tmp, tmp2, 16); |
3863edbd |
1660 | goto end_op; |
1661 | case 0x0e: // MULU.W Rm,Rn 0010nnnnmmmm1110 |
1662 | case 0x0f: // MULS.W Rm,Rn 0010nnnnmmmm1111 |
1663 | tmp2 = rcache_get_reg(GET_Rn(), RC_GR_READ); |
1664 | tmp = rcache_get_reg(SHR_MACL, RC_GR_WRITE); |
1665 | if (op & 1) { |
1666 | emith_sext(tmp, tmp2, 16); |
1667 | } else |
1668 | emith_clear_msb(tmp, tmp2, 16); |
1669 | tmp3 = rcache_get_reg(GET_Rm(), RC_GR_READ); |
1670 | tmp2 = rcache_get_tmp(); |
1671 | if (op & 1) { |
1672 | emith_sext(tmp2, tmp3, 16); |
1673 | } else |
1674 | emith_clear_msb(tmp2, tmp3, 16); |
1675 | emith_mul(tmp, tmp, tmp2); |
1676 | rcache_free_tmp(tmp2); |
1677 | // FIXME: causes timing issues in Doom? |
1678 | // cycles++; |
1679 | goto end_op; |
679af8a3 |
1680 | } |
1681 | goto default_; |
1682 | |
3863edbd |
1683 | ///////////////////////////////////////////// |
1684 | case 0x03: |
1685 | switch (op & 0x0f) |
1686 | { |
1687 | case 0x00: // CMP/EQ Rm,Rn 0011nnnnmmmm0000 |
1688 | case 0x02: // CMP/HS Rm,Rn 0011nnnnmmmm0010 |
1689 | case 0x03: // CMP/GE Rm,Rn 0011nnnnmmmm0011 |
1690 | case 0x06: // CMP/HI Rm,Rn 0011nnnnmmmm0110 |
1691 | case 0x07: // CMP/GT Rm,Rn 0011nnnnmmmm0111 |
8796b7ee |
1692 | sr = rcache_get_reg(SHR_SR, RC_GR_RMW); |
3863edbd |
1693 | tmp2 = rcache_get_reg(GET_Rn(), RC_GR_READ); |
1694 | tmp3 = rcache_get_reg(GET_Rm(), RC_GR_READ); |
18b94127 |
1695 | if (drcf.delayed_op) |
1696 | DELAY_SAVE_T(sr); |
8796b7ee |
1697 | emith_bic_r_imm(sr, T); |
3863edbd |
1698 | emith_cmp_r_r(tmp2, tmp3); |
1699 | switch (op & 0x07) |
1700 | { |
1701 | case 0x00: // CMP/EQ |
8796b7ee |
1702 | emit_or_t_if_eq(sr); |
3863edbd |
1703 | break; |
1704 | case 0x02: // CMP/HS |
1705 | EMITH_SJMP_START(DCOND_LO); |
8796b7ee |
1706 | emith_or_r_imm_c(DCOND_HS, sr, T); |
3863edbd |
1707 | EMITH_SJMP_END(DCOND_LO); |
1708 | break; |
1709 | case 0x03: // CMP/GE |
1710 | EMITH_SJMP_START(DCOND_LT); |
8796b7ee |
1711 | emith_or_r_imm_c(DCOND_GE, sr, T); |
3863edbd |
1712 | EMITH_SJMP_END(DCOND_LT); |
1713 | break; |
1714 | case 0x06: // CMP/HI |
1715 | EMITH_SJMP_START(DCOND_LS); |
8796b7ee |
1716 | emith_or_r_imm_c(DCOND_HI, sr, T); |
3863edbd |
1717 | EMITH_SJMP_END(DCOND_LS); |
1718 | break; |
1719 | case 0x07: // CMP/GT |
1720 | EMITH_SJMP_START(DCOND_LE); |
8796b7ee |
1721 | emith_or_r_imm_c(DCOND_GT, sr, T); |
3863edbd |
1722 | EMITH_SJMP_END(DCOND_LE); |
1723 | break; |
1724 | } |
1725 | goto end_op; |
1726 | case 0x04: // DIV1 Rm,Rn 0011nnnnmmmm0100 |
f0d7b1fa |
1727 | // Q1 = carry(Rn = (Rn << 1) | T) |
1728 | // if Q ^ M |
1729 | // Q2 = carry(Rn += Rm) |
1730 | // else |
1731 | // Q2 = carry(Rn -= Rm) |
1732 | // Q = M ^ Q1 ^ Q2 |
1733 | // T = (Q == M) = !(Q ^ M) = !(Q1 ^ Q2) |
1734 | tmp2 = rcache_get_reg(GET_Rn(), RC_GR_RMW); |
1735 | tmp3 = rcache_get_reg(GET_Rm(), RC_GR_READ); |
1736 | sr = rcache_get_reg(SHR_SR, RC_GR_RMW); |
18b94127 |
1737 | if (drcf.delayed_op) |
1738 | DELAY_SAVE_T(sr); |
8b4f38f4 |
1739 | emith_tpop_carry(sr, 0); |
f0d7b1fa |
1740 | emith_adcf_r_r(tmp2, tmp2); |
8b4f38f4 |
1741 | emith_tpush_carry(sr, 0); // keep Q1 in T for now |
f0d7b1fa |
1742 | tmp4 = rcache_get_tmp(); |
1743 | emith_and_r_r_imm(tmp4, sr, M); |
1744 | emith_eor_r_r_lsr(sr, tmp4, M_SHIFT - Q_SHIFT); // Q ^= M |
1745 | rcache_free_tmp(tmp4); |
1746 | // add or sub, invert T if carry to get Q1 ^ Q2 |
1747 | // in: (Q ^ M) passed in Q, Q1 in T |
1748 | emith_sh2_div1_step(tmp2, tmp3, sr); |
18b94127 |
1749 | emith_bic_r_imm(sr, Q); |
1750 | emith_tst_r_imm(sr, M); |
1751 | EMITH_SJMP_START(DCOND_EQ); |
1752 | emith_or_r_imm_c(DCOND_NE, sr, Q); // Q = M |
1753 | EMITH_SJMP_END(DCOND_EQ); |
1754 | emith_tst_r_imm(sr, T); |
1755 | EMITH_SJMP_START(DCOND_EQ); |
1756 | emith_eor_r_imm_c(DCOND_NE, sr, Q); // Q = M ^ Q1 ^ Q2 |
1757 | EMITH_SJMP_END(DCOND_EQ); |
1758 | emith_eor_r_imm(sr, T); // T = !(Q1 ^ Q2) |
f0d7b1fa |
1759 | goto end_op; |
3863edbd |
1760 | case 0x05: // DMULU.L Rm,Rn 0011nnnnmmmm0101 |
1761 | tmp = rcache_get_reg(GET_Rn(), RC_GR_READ); |
1762 | tmp2 = rcache_get_reg(GET_Rm(), RC_GR_READ); |
1763 | tmp3 = rcache_get_reg(SHR_MACL, RC_GR_WRITE); |
1764 | tmp4 = rcache_get_reg(SHR_MACH, RC_GR_WRITE); |
1765 | emith_mul_u64(tmp3, tmp4, tmp, tmp2); |
1766 | goto end_op; |
1767 | case 0x08: // SUB Rm,Rn 0011nnnnmmmm1000 |
1768 | case 0x0c: // ADD Rm,Rn 0011nnnnmmmm1100 |
1769 | tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW); |
1770 | tmp2 = rcache_get_reg(GET_Rm(), RC_GR_READ); |
1771 | if (op & 4) { |
1772 | emith_add_r_r(tmp, tmp2); |
1773 | } else |
1774 | emith_sub_r_r(tmp, tmp2); |
1775 | goto end_op; |
1776 | case 0x0a: // SUBC Rm,Rn 0011nnnnmmmm1010 |
1777 | case 0x0e: // ADDC Rm,Rn 0011nnnnmmmm1110 |
1778 | tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW); |
1779 | tmp2 = rcache_get_reg(GET_Rm(), RC_GR_READ); |
8796b7ee |
1780 | sr = rcache_get_reg(SHR_SR, RC_GR_RMW); |
18b94127 |
1781 | if (drcf.delayed_op) |
1782 | DELAY_SAVE_T(sr); |
3863edbd |
1783 | if (op & 4) { // adc |
8b4f38f4 |
1784 | emith_tpop_carry(sr, 0); |
3863edbd |
1785 | emith_adcf_r_r(tmp, tmp2); |
8b4f38f4 |
1786 | emith_tpush_carry(sr, 0); |
3863edbd |
1787 | } else { |
8b4f38f4 |
1788 | emith_tpop_carry(sr, 1); |
3863edbd |
1789 | emith_sbcf_r_r(tmp, tmp2); |
8b4f38f4 |
1790 | emith_tpush_carry(sr, 1); |
3863edbd |
1791 | } |
3863edbd |
1792 | goto end_op; |
1793 | case 0x0b: // SUBV Rm,Rn 0011nnnnmmmm1011 |
1794 | case 0x0f: // ADDV Rm,Rn 0011nnnnmmmm1111 |
1795 | tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW); |
1796 | tmp2 = rcache_get_reg(GET_Rm(), RC_GR_READ); |
8796b7ee |
1797 | sr = rcache_get_reg(SHR_SR, RC_GR_RMW); |
18b94127 |
1798 | if (drcf.delayed_op) |
1799 | DELAY_SAVE_T(sr); |
8796b7ee |
1800 | emith_bic_r_imm(sr, T); |
3863edbd |
1801 | if (op & 4) { |
1802 | emith_addf_r_r(tmp, tmp2); |
1803 | } else |
1804 | emith_subf_r_r(tmp, tmp2); |
1805 | EMITH_SJMP_START(DCOND_VC); |
8796b7ee |
1806 | emith_or_r_imm_c(DCOND_VS, sr, T); |
3863edbd |
1807 | EMITH_SJMP_END(DCOND_VC); |
1808 | goto end_op; |
1809 | case 0x0d: // DMULS.L Rm,Rn 0011nnnnmmmm1101 |
1810 | tmp = rcache_get_reg(GET_Rn(), RC_GR_READ); |
1811 | tmp2 = rcache_get_reg(GET_Rm(), RC_GR_READ); |
1812 | tmp3 = rcache_get_reg(SHR_MACL, RC_GR_WRITE); |
1813 | tmp4 = rcache_get_reg(SHR_MACH, RC_GR_WRITE); |
1814 | emith_mul_s64(tmp3, tmp4, tmp, tmp2); |
1815 | goto end_op; |
1816 | } |
1817 | goto default_; |
1818 | |
1819 | ///////////////////////////////////////////// |
679af8a3 |
1820 | case 0x04: |
3863edbd |
1821 | switch (op & 0x0f) |
1822 | { |
c18edb34 |
1823 | case 0x00: |
3863edbd |
1824 | switch (GET_Fx()) |
1825 | { |
1826 | case 0: // SHLL Rn 0100nnnn00000000 |
1827 | case 2: // SHAL Rn 0100nnnn00100000 |
8796b7ee |
1828 | tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW); |
1829 | sr = rcache_get_reg(SHR_SR, RC_GR_RMW); |
18b94127 |
1830 | if (drcf.delayed_op) |
1831 | DELAY_SAVE_T(sr); |
8b4f38f4 |
1832 | emith_tpop_carry(sr, 0); // dummy |
3863edbd |
1833 | emith_lslf(tmp, tmp, 1); |
8b4f38f4 |
1834 | emith_tpush_carry(sr, 0); |
3863edbd |
1835 | goto end_op; |
1836 | case 1: // DT Rn 0100nnnn00010000 |
8796b7ee |
1837 | sr = rcache_get_reg(SHR_SR, RC_GR_RMW); |
18b94127 |
1838 | if (drcf.delayed_op) |
1839 | DELAY_SAVE_T(sr); |
00faec9c |
1840 | #ifndef DRC_CMP |
23686515 |
1841 | if (FETCH_OP(pc) == 0x8bfd) { // BF #-2 |
1842 | if (gconst_get(GET_Rn(), &tmp)) { |
1843 | // XXX: limit burned cycles |
1844 | emit_move_r_imm32(GET_Rn(), 0); |
1845 | emith_or_r_imm(sr, T); |
a2b8c5a5 |
1846 | cycles += tmp * 4 + 1; // +1 syncs with noconst version, not sure why |
23686515 |
1847 | skip_op = 1; |
1848 | } |
1849 | else |
1850 | emith_sh2_dtbf_loop(); |
1851 | goto end_op; |
1852 | } |
00faec9c |
1853 | #endif |
23686515 |
1854 | tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW); |
8796b7ee |
1855 | emith_bic_r_imm(sr, T); |
3863edbd |
1856 | emith_subf_r_imm(tmp, 1); |
8796b7ee |
1857 | emit_or_t_if_eq(sr); |
80599a42 |
1858 | goto end_op; |
1859 | } |
3863edbd |
1860 | goto default_; |
ed8cf79b |
1861 | case 0x01: |
1862 | switch (GET_Fx()) |
1863 | { |
1864 | case 0: // SHLR Rn 0100nnnn00000001 |
1865 | case 2: // SHAR Rn 0100nnnn00100001 |
8796b7ee |
1866 | tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW); |
1867 | sr = rcache_get_reg(SHR_SR, RC_GR_RMW); |
18b94127 |
1868 | if (drcf.delayed_op) |
1869 | DELAY_SAVE_T(sr); |
8b4f38f4 |
1870 | emith_tpop_carry(sr, 0); // dummy |
ed8cf79b |
1871 | if (op & 0x20) { |
1872 | emith_asrf(tmp, tmp, 1); |
1873 | } else |
1874 | emith_lsrf(tmp, tmp, 1); |
8b4f38f4 |
1875 | emith_tpush_carry(sr, 0); |
ed8cf79b |
1876 | goto end_op; |
1877 | case 1: // CMP/PZ Rn 0100nnnn00010001 |
8796b7ee |
1878 | tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW); |
1879 | sr = rcache_get_reg(SHR_SR, RC_GR_RMW); |
18b94127 |
1880 | if (drcf.delayed_op) |
1881 | DELAY_SAVE_T(sr); |
8796b7ee |
1882 | emith_bic_r_imm(sr, T); |
ed8cf79b |
1883 | emith_cmp_r_imm(tmp, 0); |
1884 | EMITH_SJMP_START(DCOND_LT); |
8796b7ee |
1885 | emith_or_r_imm_c(DCOND_GE, sr, T); |
ed8cf79b |
1886 | EMITH_SJMP_END(DCOND_LT); |
1887 | goto end_op; |
1888 | } |
1889 | goto default_; |
1890 | case 0x02: |
1891 | case 0x03: |
1892 | switch (op & 0x3f) |
1893 | { |
1894 | case 0x02: // STS.L MACH,@–Rn 0100nnnn00000010 |
1895 | tmp = SHR_MACH; |
1896 | break; |
1897 | case 0x12: // STS.L MACL,@–Rn 0100nnnn00010010 |
1898 | tmp = SHR_MACL; |
1899 | break; |
1900 | case 0x22: // STS.L PR,@–Rn 0100nnnn00100010 |
1901 | tmp = SHR_PR; |
1902 | break; |
1903 | case 0x03: // STC.L SR,@–Rn 0100nnnn00000011 |
1904 | tmp = SHR_SR; |
1905 | break; |
1906 | case 0x13: // STC.L GBR,@–Rn 0100nnnn00010011 |
1907 | tmp = SHR_GBR; |
1908 | break; |
1909 | case 0x23: // STC.L VBR,@–Rn 0100nnnn00100011 |
1910 | tmp = SHR_VBR; |
1911 | break; |
1912 | default: |
e898de13 |
1913 | goto default_; |
ed8cf79b |
1914 | } |
1915 | tmp2 = rcache_get_reg(GET_Rn(), RC_GR_RMW); |
1916 | emith_sub_r_imm(tmp2, 4); |
1917 | rcache_clean(); |
1918 | rcache_get_reg_arg(0, GET_Rn()); |
1919 | tmp3 = rcache_get_reg_arg(1, tmp); |
1920 | if (tmp == SHR_SR) |
e05b81fc |
1921 | emith_clear_msb(tmp3, tmp3, 22); // reserved bits defined by ISA as 0 |
1922 | emit_memhandler_write(2, pc, drcf.delayed_op); |
ed8cf79b |
1923 | goto end_op; |
1924 | case 0x04: |
1925 | case 0x05: |
1926 | switch (op & 0x3f) |
1927 | { |
1928 | case 0x04: // ROTL Rn 0100nnnn00000100 |
1929 | case 0x05: // ROTR Rn 0100nnnn00000101 |
8796b7ee |
1930 | tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW); |
1931 | sr = rcache_get_reg(SHR_SR, RC_GR_RMW); |
18b94127 |
1932 | if (drcf.delayed_op) |
1933 | DELAY_SAVE_T(sr); |
8b4f38f4 |
1934 | emith_tpop_carry(sr, 0); // dummy |
ed8cf79b |
1935 | if (op & 1) { |
1936 | emith_rorf(tmp, tmp, 1); |
1937 | } else |
1938 | emith_rolf(tmp, tmp, 1); |
8b4f38f4 |
1939 | emith_tpush_carry(sr, 0); |
ed8cf79b |
1940 | goto end_op; |
1941 | case 0x24: // ROTCL Rn 0100nnnn00100100 |
1942 | case 0x25: // ROTCR Rn 0100nnnn00100101 |
8796b7ee |
1943 | tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW); |
1944 | sr = rcache_get_reg(SHR_SR, RC_GR_RMW); |
18b94127 |
1945 | if (drcf.delayed_op) |
1946 | DELAY_SAVE_T(sr); |
8b4f38f4 |
1947 | emith_tpop_carry(sr, 0); |
ed8cf79b |
1948 | if (op & 1) { |
1949 | emith_rorcf(tmp); |
1950 | } else |
1951 | emith_rolcf(tmp); |
8b4f38f4 |
1952 | emith_tpush_carry(sr, 0); |
ed8cf79b |
1953 | goto end_op; |
1954 | case 0x15: // CMP/PL Rn 0100nnnn00010101 |
8796b7ee |
1955 | tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW); |
1956 | sr = rcache_get_reg(SHR_SR, RC_GR_RMW); |
18b94127 |
1957 | if (drcf.delayed_op) |
1958 | DELAY_SAVE_T(sr); |
8796b7ee |
1959 | emith_bic_r_imm(sr, T); |
ed8cf79b |
1960 | emith_cmp_r_imm(tmp, 0); |
1961 | EMITH_SJMP_START(DCOND_LE); |
8796b7ee |
1962 | emith_or_r_imm_c(DCOND_GT, sr, T); |
ed8cf79b |
1963 | EMITH_SJMP_END(DCOND_LE); |
1964 | goto end_op; |
1965 | } |
e898de13 |
1966 | goto default_; |
ed8cf79b |
1967 | case 0x06: |
1968 | case 0x07: |
1969 | switch (op & 0x3f) |
1970 | { |
1971 | case 0x06: // LDS.L @Rm+,MACH 0100mmmm00000110 |
1972 | tmp = SHR_MACH; |
1973 | break; |
1974 | case 0x16: // LDS.L @Rm+,MACL 0100mmmm00010110 |
1975 | tmp = SHR_MACL; |
1976 | break; |
1977 | case 0x26: // LDS.L @Rm+,PR 0100mmmm00100110 |
1978 | tmp = SHR_PR; |
1979 | break; |
1980 | case 0x07: // LDC.L @Rm+,SR 0100mmmm00000111 |
1981 | tmp = SHR_SR; |
1982 | break; |
1983 | case 0x17: // LDC.L @Rm+,GBR 0100mmmm00010111 |
1984 | tmp = SHR_GBR; |
1985 | break; |
1986 | case 0x27: // LDC.L @Rm+,VBR 0100mmmm00100111 |
1987 | tmp = SHR_VBR; |
1988 | break; |
1989 | default: |
1990 | goto default_; |
1991 | } |
ed8cf79b |
1992 | rcache_get_reg_arg(0, GET_Rn()); |
1993 | tmp2 = emit_memhandler_read(2); |
1994 | if (tmp == SHR_SR) { |
18b94127 |
1995 | sr = rcache_get_reg(SHR_SR, RC_GR_RMW); |
1996 | if (drcf.delayed_op) |
1997 | DELAY_SAVE_T(sr); |
1998 | emith_write_sr(sr, tmp2); |
1999 | drcf.test_irq = 1; |
ed8cf79b |
2000 | } else { |
2001 | tmp = rcache_get_reg(tmp, RC_GR_WRITE); |
2002 | emith_move_r_r(tmp, tmp2); |
2003 | } |
2004 | rcache_free_tmp(tmp2); |
2005 | tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW); |
2006 | emith_add_r_imm(tmp, 4); |
2007 | goto end_op; |
52d759c3 |
2008 | case 0x08: |
2009 | case 0x09: |
2010 | switch (GET_Fx()) |
2011 | { |
2012 | case 0: |
2013 | // SHLL2 Rn 0100nnnn00001000 |
2014 | // SHLR2 Rn 0100nnnn00001001 |
2015 | tmp = 2; |
2016 | break; |
2017 | case 1: |
2018 | // SHLL8 Rn 0100nnnn00011000 |
2019 | // SHLR8 Rn 0100nnnn00011001 |
2020 | tmp = 8; |
2021 | break; |
2022 | case 2: |
2023 | // SHLL16 Rn 0100nnnn00101000 |
2024 | // SHLR16 Rn 0100nnnn00101001 |
2025 | tmp = 16; |
2026 | break; |
2027 | default: |
2028 | goto default_; |
2029 | } |
2030 | tmp2 = rcache_get_reg(GET_Rn(), RC_GR_RMW); |
2031 | if (op & 1) { |
2032 | emith_lsr(tmp2, tmp2, tmp); |
2033 | } else |
2034 | emith_lsl(tmp2, tmp2, tmp); |
2035 | goto end_op; |
2036 | case 0x0a: |
2037 | switch (GET_Fx()) |
2038 | { |
2039 | case 0: // LDS Rm,MACH 0100mmmm00001010 |
2040 | tmp2 = SHR_MACH; |
2041 | break; |
2042 | case 1: // LDS Rm,MACL 0100mmmm00011010 |
2043 | tmp2 = SHR_MACL; |
2044 | break; |
2045 | case 2: // LDS Rm,PR 0100mmmm00101010 |
2046 | tmp2 = SHR_PR; |
2047 | break; |
2048 | default: |
2049 | goto default_; |
2050 | } |
2051 | emit_move_r_r(tmp2, GET_Rn()); |
2052 | goto end_op; |
e898de13 |
2053 | case 0x0b: |
52d759c3 |
2054 | switch (GET_Fx()) |
2055 | { |
2056 | case 0: // JSR @Rm 0100mmmm00001011 |
2057 | case 2: // JMP @Rm 0100mmmm00101011 |
2058 | DELAYED_OP; |
2059 | if (!(op & 0x20)) |
2060 | emit_move_r_imm32(SHR_PR, pc + 2); |
18b94127 |
2061 | emit_move_r_r(SHR_PC, (op >> 8) & 0x0f); |
44e6452e |
2062 | out_pc = (u32)-1; |
52d759c3 |
2063 | cycles++; |
2064 | break; |
2065 | case 1: // TAS.B @Rn 0100nnnn00011011 |
2066 | // XXX: is TAS working on 32X? |
52d759c3 |
2067 | rcache_get_reg_arg(0, GET_Rn()); |
8796b7ee |
2068 | tmp = emit_memhandler_read(0); |
2069 | sr = rcache_get_reg(SHR_SR, RC_GR_RMW); |
18b94127 |
2070 | if (drcf.delayed_op) |
2071 | DELAY_SAVE_T(sr); |
8796b7ee |
2072 | emith_bic_r_imm(sr, T); |
52d759c3 |
2073 | emith_cmp_r_imm(tmp, 0); |
8796b7ee |
2074 | emit_or_t_if_eq(sr); |
52d759c3 |
2075 | rcache_clean(); |
2076 | emith_or_r_imm(tmp, 0x80); |
2077 | tmp2 = rcache_get_tmp_arg(1); // assuming it differs to tmp |
2078 | emith_move_r_r(tmp2, tmp); |
2079 | rcache_free_tmp(tmp); |
2080 | rcache_get_reg_arg(0, GET_Rn()); |
e05b81fc |
2081 | emit_memhandler_write(0, pc, drcf.delayed_op); |
52d759c3 |
2082 | cycles += 3; |
2083 | break; |
2084 | default: |
e898de13 |
2085 | goto default_; |
52d759c3 |
2086 | } |
e898de13 |
2087 | goto end_op; |
2088 | case 0x0e: |
52d759c3 |
2089 | tmp = rcache_get_reg(GET_Rn(), RC_GR_READ); |
2090 | switch (GET_Fx()) |
2091 | { |
2092 | case 0: // LDC Rm,SR 0100mmmm00001110 |
2093 | tmp2 = SHR_SR; |
2094 | break; |
2095 | case 1: // LDC Rm,GBR 0100mmmm00011110 |
2096 | tmp2 = SHR_GBR; |
2097 | break; |
2098 | case 2: // LDC Rm,VBR 0100mmmm00101110 |
2099 | tmp2 = SHR_VBR; |
2100 | break; |
2101 | default: |
e898de13 |
2102 | goto default_; |
52d759c3 |
2103 | } |
2104 | if (tmp2 == SHR_SR) { |
18b94127 |
2105 | sr = rcache_get_reg(SHR_SR, RC_GR_RMW); |
2106 | if (drcf.delayed_op) |
2107 | DELAY_SAVE_T(sr); |
2108 | emith_write_sr(sr, tmp); |
2109 | drcf.test_irq = 1; |
52d759c3 |
2110 | } else { |
2111 | tmp2 = rcache_get_reg(tmp2, RC_GR_WRITE); |
2112 | emith_move_r_r(tmp2, tmp); |
2113 | } |
2114 | goto end_op; |
2115 | case 0x0f: |
23686515 |
2116 | // MAC.W @Rm+,@Rn+ 0100nnnnmmmm1111 |
f0d7b1fa |
2117 | emit_indirect_read_double(&tmp, &tmp2, GET_Rn(), GET_Rm(), 1); |
2118 | emith_sext(tmp, tmp, 16); |
2119 | emith_sext(tmp2, tmp2, 16); |
2120 | tmp3 = rcache_get_reg(SHR_MACL, RC_GR_RMW); |
2121 | tmp4 = rcache_get_reg(SHR_MACH, RC_GR_RMW); |
2122 | emith_mula_s64(tmp3, tmp4, tmp, tmp2); |
f0d7b1fa |
2123 | rcache_free_tmp(tmp2); |
f0d7b1fa |
2124 | // XXX: MACH should be untouched when S is set? |
8796b7ee |
2125 | sr = rcache_get_reg(SHR_SR, RC_GR_READ); |
2126 | emith_tst_r_imm(sr, S); |
2127 | EMITH_JMP_START(DCOND_EQ); |
2128 | |
2129 | emith_asr(tmp, tmp3, 31); |
2130 | emith_eorf_r_r(tmp, tmp4); // tmp = ((signed)macl >> 31) ^ mach |
2131 | EMITH_JMP_START(DCOND_EQ); |
2132 | emith_move_r_imm(tmp3, 0x80000000); |
2133 | emith_tst_r_r(tmp4, tmp4); |
2134 | EMITH_SJMP_START(DCOND_MI); |
2135 | emith_sub_r_imm_c(DCOND_PL, tmp3, 1); // positive |
2136 | EMITH_SJMP_END(DCOND_MI); |
2137 | EMITH_JMP_END(DCOND_EQ); |
2138 | |
2139 | EMITH_JMP_END(DCOND_EQ); |
2140 | rcache_free_tmp(tmp); |
f0d7b1fa |
2141 | cycles += 2; |
2142 | goto end_op; |
679af8a3 |
2143 | } |
2144 | goto default_; |
2145 | |
52d759c3 |
2146 | ///////////////////////////////////////////// |
2147 | case 0x05: |
2148 | // MOV.L @(disp,Rm),Rn 0101nnnnmmmmdddd |
23686515 |
2149 | emit_memhandler_read_rr(GET_Rn(), GET_Rm(), (op & 0x0f) * 4, 2); |
52d759c3 |
2150 | goto end_op; |
2151 | |
2152 | ///////////////////////////////////////////// |
2153 | case 0x06: |
2154 | switch (op & 0x0f) |
2155 | { |
2156 | case 0x00: // MOV.B @Rm,Rn 0110nnnnmmmm0000 |
2157 | case 0x01: // MOV.W @Rm,Rn 0110nnnnmmmm0001 |
2158 | case 0x02: // MOV.L @Rm,Rn 0110nnnnmmmm0010 |
2159 | case 0x04: // MOV.B @Rm+,Rn 0110nnnnmmmm0100 |
2160 | case 0x05: // MOV.W @Rm+,Rn 0110nnnnmmmm0101 |
2161 | case 0x06: // MOV.L @Rm+,Rn 0110nnnnmmmm0110 |
23686515 |
2162 | emit_memhandler_read_rr(GET_Rn(), GET_Rm(), 0, op & 3); |
52d759c3 |
2163 | if ((op & 7) >= 4 && GET_Rn() != GET_Rm()) { |
2164 | tmp = rcache_get_reg(GET_Rm(), RC_GR_RMW); |
2165 | emith_add_r_imm(tmp, (1 << (op & 3))); |
2166 | } |
2167 | goto end_op; |
2168 | case 0x03: |
2169 | case 0x07 ... 0x0f: |
2170 | tmp = rcache_get_reg(GET_Rm(), RC_GR_READ); |
2171 | tmp2 = rcache_get_reg(GET_Rn(), RC_GR_WRITE); |
2172 | switch (op & 0x0f) |
2173 | { |
2174 | case 0x03: // MOV Rm,Rn 0110nnnnmmmm0011 |
2175 | emith_move_r_r(tmp2, tmp); |
2176 | break; |
2177 | case 0x07: // NOT Rm,Rn 0110nnnnmmmm0111 |
2178 | emith_mvn_r_r(tmp2, tmp); |
2179 | break; |
2180 | case 0x08: // SWAP.B Rm,Rn 0110nnnnmmmm1000 |
2181 | tmp3 = tmp2; |
2182 | if (tmp == tmp2) |
2183 | tmp3 = rcache_get_tmp(); |
2184 | tmp4 = rcache_get_tmp(); |
2185 | emith_lsr(tmp3, tmp, 16); |
f0d7b1fa |
2186 | emith_or_r_r_lsl(tmp3, tmp, 24); |
52d759c3 |
2187 | emith_and_r_r_imm(tmp4, tmp, 0xff00); |
f0d7b1fa |
2188 | emith_or_r_r_lsl(tmp3, tmp4, 8); |
52d759c3 |
2189 | emith_rol(tmp2, tmp3, 16); |
2190 | rcache_free_tmp(tmp4); |
2191 | if (tmp == tmp2) |
2192 | rcache_free_tmp(tmp3); |
2193 | break; |
2194 | case 0x09: // SWAP.W Rm,Rn 0110nnnnmmmm1001 |
2195 | emith_rol(tmp2, tmp, 16); |
2196 | break; |
2197 | case 0x0a: // NEGC Rm,Rn 0110nnnnmmmm1010 |
8796b7ee |
2198 | sr = rcache_get_reg(SHR_SR, RC_GR_RMW); |
18b94127 |
2199 | if (drcf.delayed_op) |
2200 | DELAY_SAVE_T(sr); |
8b4f38f4 |
2201 | emith_tpop_carry(sr, 1); |
52d759c3 |
2202 | emith_negcf_r_r(tmp2, tmp); |
8b4f38f4 |
2203 | emith_tpush_carry(sr, 1); |
52d759c3 |
2204 | break; |
2205 | case 0x0b: // NEG Rm,Rn 0110nnnnmmmm1011 |
2206 | emith_neg_r_r(tmp2, tmp); |
2207 | break; |
2208 | case 0x0c: // EXTU.B Rm,Rn 0110nnnnmmmm1100 |
2209 | emith_clear_msb(tmp2, tmp, 24); |
2210 | break; |
2211 | case 0x0d: // EXTU.W Rm,Rn 0110nnnnmmmm1101 |
2212 | emith_clear_msb(tmp2, tmp, 16); |
2213 | break; |
2214 | case 0x0e: // EXTS.B Rm,Rn 0110nnnnmmmm1110 |
2215 | emith_sext(tmp2, tmp, 8); |
2216 | break; |
2217 | case 0x0f: // EXTS.W Rm,Rn 0110nnnnmmmm1111 |
2218 | emith_sext(tmp2, tmp, 16); |
2219 | break; |
2220 | } |
2221 | goto end_op; |
2222 | } |
2223 | goto default_; |
2224 | |
2225 | ///////////////////////////////////////////// |
2226 | case 0x07: |
2227 | // ADD #imm,Rn 0111nnnniiiiiiii |
2228 | tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW); |
2229 | if (op & 0x80) { // adding negative |
2230 | emith_sub_r_imm(tmp, -op & 0xff); |
2231 | } else |
2232 | emith_add_r_imm(tmp, op & 0xff); |
2233 | goto end_op; |
2234 | |
3863edbd |
2235 | ///////////////////////////////////////////// |
e898de13 |
2236 | case 0x08: |
52d759c3 |
2237 | switch (op & 0x0f00) |
2238 | { |
2239 | case 0x0000: // MOV.B R0,@(disp,Rn) 10000000nnnndddd |
2240 | case 0x0100: // MOV.W R0,@(disp,Rn) 10000001nnnndddd |
2241 | rcache_clean(); |
2242 | tmp = rcache_get_reg_arg(0, GET_Rm()); |
2243 | tmp2 = rcache_get_reg_arg(1, SHR_R0); |
2244 | tmp3 = (op & 0x100) >> 8; |
23686515 |
2245 | if (op & 0x0f) |
2246 | emith_add_r_imm(tmp, (op & 0x0f) << tmp3); |
e05b81fc |
2247 | emit_memhandler_write(tmp3, pc, drcf.delayed_op); |
52d759c3 |
2248 | goto end_op; |
2249 | case 0x0400: // MOV.B @(disp,Rm),R0 10000100mmmmdddd |
2250 | case 0x0500: // MOV.W @(disp,Rm),R0 10000101mmmmdddd |
23686515 |
2251 | tmp = (op & 0x100) >> 8; |
2252 | emit_memhandler_read_rr(SHR_R0, GET_Rm(), (op & 0x0f) << tmp, tmp); |
52d759c3 |
2253 | goto end_op; |
2254 | case 0x0800: // CMP/EQ #imm,R0 10001000iiiiiiii |
2255 | // XXX: could use cmn |
2256 | tmp = rcache_get_tmp(); |
2257 | tmp2 = rcache_get_reg(0, RC_GR_READ); |
8796b7ee |
2258 | sr = rcache_get_reg(SHR_SR, RC_GR_RMW); |
18b94127 |
2259 | if (drcf.delayed_op) |
2260 | DELAY_SAVE_T(sr); |
52d759c3 |
2261 | emith_move_r_imm_s8(tmp, op & 0xff); |
8796b7ee |
2262 | emith_bic_r_imm(sr, T); |
52d759c3 |
2263 | emith_cmp_r_r(tmp2, tmp); |
8796b7ee |
2264 | emit_or_t_if_eq(sr); |
52d759c3 |
2265 | rcache_free_tmp(tmp); |
2266 | goto end_op; |
2267 | case 0x0d00: // BT/S label 10001101dddddddd |
2268 | case 0x0f00: // BF/S label 10001111dddddddd |
679af8a3 |
2269 | DELAYED_OP; |
2270 | cycles--; |
679af8a3 |
2271 | // fallthrough |
44e6452e |
2272 | case 0x0900: // BT label 10001001dddddddd |
2273 | case 0x0b00: // BF label 10001011dddddddd |
2274 | // will handle conditional branches later |
2275 | pending_branch_cond = (op & 0x0200) ? DCOND_EQ : DCOND_NE; |
2276 | i = ((signed int)(op << 24) >> 23); |
2277 | pending_branch_pc = pc + i + 2; |
e898de13 |
2278 | cycles += 2; |
e898de13 |
2279 | goto end_op; |
44e6452e |
2280 | } |
679af8a3 |
2281 | goto default_; |
679af8a3 |
2282 | |
52d759c3 |
2283 | ///////////////////////////////////////////// |
2284 | case 0x09: |
2285 | // MOV.W @(disp,PC),Rn 1001nnnndddddddd |
23686515 |
2286 | tmp = pc + (op & 0xff) * 2 + 2; |
2287 | #if PROPAGATE_CONSTANTS |
04092e32 |
2288 | if (tmp < end_pc + MAX_LITERAL_OFFSET && literal_addr_count < MAX_LITERALS) { |
2289 | ADD_TO_ARRAY(literal_addr, literal_addr_count, tmp,); |
23686515 |
2290 | gconst_new(GET_Rn(), (u32)(int)(signed short)FETCH_OP(tmp)); |
23686515 |
2291 | } |
2292 | else |
2293 | #endif |
2294 | { |
2295 | tmp2 = rcache_get_tmp_arg(0); |
2296 | emith_move_r_imm(tmp2, tmp); |
2297 | tmp2 = emit_memhandler_read(1); |
2298 | tmp3 = rcache_get_reg(GET_Rn(), RC_GR_WRITE); |
2299 | emith_sext(tmp3, tmp2, 16); |
2300 | rcache_free_tmp(tmp2); |
2301 | } |
f0d7b1fa |
2302 | goto end_op; |
52d759c3 |
2303 | |
3863edbd |
2304 | ///////////////////////////////////////////// |
679af8a3 |
2305 | case 0x0a: |
2306 | // BRA label 1010dddddddddddd |
2307 | DELAYED_OP; |
44e6452e |
2308 | sr = rcache_get_reg(SHR_SR, RC_GR_RMW); |
679af8a3 |
2309 | tmp = ((signed int)(op << 20) >> 19); |
44e6452e |
2310 | out_pc = pc + tmp + 2; |
2311 | if (tmp == (u32)-4) |
2312 | emith_clear_msb(sr, sr, 20); // burn cycles |
679af8a3 |
2313 | cycles++; |
e898de13 |
2314 | break; |
679af8a3 |
2315 | |
3863edbd |
2316 | ///////////////////////////////////////////// |
679af8a3 |
2317 | case 0x0b: |
2318 | // BSR label 1011dddddddddddd |
2319 | DELAYED_OP; |
e898de13 |
2320 | emit_move_r_imm32(SHR_PR, pc + 2); |
44e6452e |
2321 | tmp = ((signed int)(op << 20) >> 19); |
2322 | out_pc = pc + tmp + 2; |
2323 | cycles++; |
2324 | break; |
679af8a3 |
2325 | |
52d759c3 |
2326 | ///////////////////////////////////////////// |
2327 | case 0x0c: |
2328 | switch (op & 0x0f00) |
2329 | { |
2330 | case 0x0000: // MOV.B R0,@(disp,GBR) 11000000dddddddd |
2331 | case 0x0100: // MOV.W R0,@(disp,GBR) 11000001dddddddd |
2332 | case 0x0200: // MOV.L R0,@(disp,GBR) 11000010dddddddd |
2333 | rcache_clean(); |
2334 | tmp = rcache_get_reg_arg(0, SHR_GBR); |
2335 | tmp2 = rcache_get_reg_arg(1, SHR_R0); |
2336 | tmp3 = (op & 0x300) >> 8; |
2337 | emith_add_r_imm(tmp, (op & 0xff) << tmp3); |
e05b81fc |
2338 | emit_memhandler_write(tmp3, pc, drcf.delayed_op); |
52d759c3 |
2339 | goto end_op; |
2340 | case 0x0400: // MOV.B @(disp,GBR),R0 11000100dddddddd |
2341 | case 0x0500: // MOV.W @(disp,GBR),R0 11000101dddddddd |
2342 | case 0x0600: // MOV.L @(disp,GBR),R0 11000110dddddddd |
23686515 |
2343 | tmp = (op & 0x300) >> 8; |
2344 | emit_memhandler_read_rr(SHR_R0, SHR_GBR, (op & 0xff) << tmp, tmp); |
52d759c3 |
2345 | goto end_op; |
2346 | case 0x0300: // TRAPA #imm 11000011iiiiiiii |
2347 | tmp = rcache_get_reg(SHR_SP, RC_GR_RMW); |
2348 | emith_sub_r_imm(tmp, 4*2); |
52d759c3 |
2349 | // push SR |
2350 | tmp = rcache_get_reg_arg(0, SHR_SP); |
2351 | emith_add_r_imm(tmp, 4); |
2352 | tmp = rcache_get_reg_arg(1, SHR_SR); |
18b94127 |
2353 | emith_clear_msb(tmp, tmp, 22); |
e05b81fc |
2354 | emit_memhandler_write(2, pc, drcf.delayed_op); |
52d759c3 |
2355 | // push PC |
2356 | rcache_get_reg_arg(0, SHR_SP); |
2357 | tmp = rcache_get_tmp_arg(1); |
2358 | emith_move_r_imm(tmp, pc); |
e05b81fc |
2359 | emit_memhandler_write(2, pc, drcf.delayed_op); |
52d759c3 |
2360 | // obtain new PC |
23686515 |
2361 | emit_memhandler_read_rr(SHR_PC, SHR_VBR, (op & 0xff) * 4, 2); |
44e6452e |
2362 | out_pc = (u32)-1; |
52d759c3 |
2363 | cycles += 7; |
44e6452e |
2364 | goto end_op; |
52d759c3 |
2365 | case 0x0700: // MOVA @(disp,PC),R0 11000111dddddddd |
2366 | emit_move_r_imm32(SHR_R0, (pc + (op & 0xff) * 4 + 2) & ~3); |
2367 | goto end_op; |
2368 | case 0x0800: // TST #imm,R0 11001000iiiiiiii |
8796b7ee |
2369 | tmp = rcache_get_reg(SHR_R0, RC_GR_READ); |
2370 | sr = rcache_get_reg(SHR_SR, RC_GR_RMW); |
18b94127 |
2371 | if (drcf.delayed_op) |
2372 | DELAY_SAVE_T(sr); |
8796b7ee |
2373 | emith_bic_r_imm(sr, T); |
52d759c3 |
2374 | emith_tst_r_imm(tmp, op & 0xff); |
8796b7ee |
2375 | emit_or_t_if_eq(sr); |
52d759c3 |
2376 | goto end_op; |
2377 | case 0x0900: // AND #imm,R0 11001001iiiiiiii |
2378 | tmp = rcache_get_reg(SHR_R0, RC_GR_RMW); |
2379 | emith_and_r_imm(tmp, op & 0xff); |
2380 | goto end_op; |
2381 | case 0x0a00: // XOR #imm,R0 11001010iiiiiiii |
2382 | tmp = rcache_get_reg(SHR_R0, RC_GR_RMW); |
2383 | emith_eor_r_imm(tmp, op & 0xff); |
2384 | goto end_op; |
2385 | case 0x0b00: // OR #imm,R0 11001011iiiiiiii |
2386 | tmp = rcache_get_reg(SHR_R0, RC_GR_RMW); |
2387 | emith_or_r_imm(tmp, op & 0xff); |
2388 | goto end_op; |
2389 | case 0x0c00: // TST.B #imm,@(R0,GBR) 11001100iiiiiiii |
8796b7ee |
2390 | tmp = emit_indirect_indexed_read(SHR_R0, SHR_GBR, 0); |
2391 | sr = rcache_get_reg(SHR_SR, RC_GR_RMW); |
18b94127 |
2392 | if (drcf.delayed_op) |
2393 | DELAY_SAVE_T(sr); |
8796b7ee |
2394 | emith_bic_r_imm(sr, T); |
52d759c3 |
2395 | emith_tst_r_imm(tmp, op & 0xff); |
8796b7ee |
2396 | emit_or_t_if_eq(sr); |
52d759c3 |
2397 | rcache_free_tmp(tmp); |
2398 | cycles += 2; |
2399 | goto end_op; |
2400 | case 0x0d00: // AND.B #imm,@(R0,GBR) 11001101iiiiiiii |
2401 | tmp = emit_indirect_indexed_read(SHR_R0, SHR_GBR, 0); |
2402 | emith_and_r_imm(tmp, op & 0xff); |
8796b7ee |
2403 | goto end_rmw_op; |
52d759c3 |
2404 | case 0x0e00: // XOR.B #imm,@(R0,GBR) 11001110iiiiiiii |
2405 | tmp = emit_indirect_indexed_read(SHR_R0, SHR_GBR, 0); |
2406 | emith_eor_r_imm(tmp, op & 0xff); |
8796b7ee |
2407 | goto end_rmw_op; |
52d759c3 |
2408 | case 0x0f00: // OR.B #imm,@(R0,GBR) 11001111iiiiiiii |
2409 | tmp = emit_indirect_indexed_read(SHR_R0, SHR_GBR, 0); |
2410 | emith_or_r_imm(tmp, op & 0xff); |
8796b7ee |
2411 | end_rmw_op: |
2412 | tmp2 = rcache_get_tmp_arg(1); |
2413 | emith_move_r_r(tmp2, tmp); |
2414 | rcache_free_tmp(tmp); |
2415 | tmp3 = rcache_get_reg_arg(0, SHR_GBR); |
2416 | tmp4 = rcache_get_reg(SHR_R0, RC_GR_READ); |
2417 | emith_add_r_r(tmp3, tmp4); |
e05b81fc |
2418 | emit_memhandler_write(0, pc, drcf.delayed_op); |
52d759c3 |
2419 | cycles += 2; |
2420 | goto end_op; |
2421 | } |
2422 | goto default_; |
2423 | |
2424 | ///////////////////////////////////////////// |
2425 | case 0x0d: |
2426 | // MOV.L @(disp,PC),Rn 1101nnnndddddddd |
23686515 |
2427 | tmp = (pc + (op & 0xff) * 4 + 2) & ~3; |
2428 | #if PROPAGATE_CONSTANTS |
04092e32 |
2429 | if (tmp < end_pc + MAX_LITERAL_OFFSET && literal_addr_count < MAX_LITERALS) { |
2430 | ADD_TO_ARRAY(literal_addr, literal_addr_count, tmp,); |
23686515 |
2431 | gconst_new(GET_Rn(), FETCH32(tmp)); |
23686515 |
2432 | } |
2433 | else |
2434 | #endif |
2435 | { |
2436 | tmp2 = rcache_get_tmp_arg(0); |
2437 | emith_move_r_imm(tmp2, tmp); |
2438 | tmp2 = emit_memhandler_read(2); |
2439 | tmp3 = rcache_get_reg(GET_Rn(), RC_GR_WRITE); |
2440 | emith_move_r_r(tmp3, tmp2); |
2441 | rcache_free_tmp(tmp2); |
2442 | } |
f0d7b1fa |
2443 | goto end_op; |
52d759c3 |
2444 | |
2445 | ///////////////////////////////////////////// |
2446 | case 0x0e: |
2447 | // MOV #imm,Rn 1110nnnniiiiiiii |
23686515 |
2448 | emit_move_r_imm32(GET_Rn(), (u32)(signed int)(signed char)op); |
52d759c3 |
2449 | goto end_op; |
2450 | |
679af8a3 |
2451 | default: |
2452 | default_: |
f0d7b1fa |
2453 | elprintf(EL_ANOMALY, "%csh2 drc: unhandled op %04x @ %08x", |
2454 | sh2->is_slave ? 's' : 'm', op, pc - 2); |
679af8a3 |
2455 | break; |
2456 | } |
2457 | |
e898de13 |
2458 | end_op: |
23686515 |
2459 | rcache_unlock_all(); |
2460 | |
44e6452e |
2461 | // conditional branch handling (with/without delay) |
2462 | if (pending_branch_cond != -1 && drcf.delayed_op != 2) |
2463 | { |
2464 | u32 target_pc = pending_branch_pc; |
2465 | void *target; |
2466 | |
18b94127 |
2467 | sr = rcache_get_reg(SHR_SR, RC_GR_RMW); |
2468 | // handle cycles |
e05b81fc |
2469 | FLUSH_CYCLES(sr); |
18b94127 |
2470 | rcache_clean(); |
18b94127 |
2471 | if (drcf.use_saved_t) |
2472 | emith_tst_r_imm(sr, T_save); |
2473 | else |
2474 | emith_tst_r_imm(sr, T); |
18b94127 |
2475 | |
5686d931 |
2476 | #if LINK_BRANCHES |
44e6452e |
2477 | if (find_in_array(branch_target_pc, branch_target_count, target_pc) >= 0) { |
2478 | // local branch |
2479 | // XXX: jumps back can be linked already |
2480 | branch_patch_pc[branch_patch_count] = target_pc; |
2481 | branch_patch_ptr[branch_patch_count] = tcache_ptr; |
2482 | emith_jump_cond_patchable(pending_branch_cond, tcache_ptr); |
2483 | |
2484 | branch_patch_count++; |
2485 | if (branch_patch_count == MAX_LOCAL_BRANCHES) { |
fcdefcf6 |
2486 | dbg(1, "warning: too many local branches"); |
44e6452e |
2487 | break; |
2488 | } |
2489 | } |
5686d931 |
2490 | else |
2491 | #endif |
2492 | { |
44e6452e |
2493 | // can't resolve branch locally, make a block exit |
2494 | emit_move_r_imm32(SHR_PC, target_pc); |
2495 | rcache_clean(); |
2496 | |
2497 | target = dr_prepare_ext_branch(target_pc, sh2, tcache_id); |
2498 | if (target == NULL) |
2499 | return NULL; |
2500 | emith_jump_cond_patchable(pending_branch_cond, target); |
18b94127 |
2501 | } |
44e6452e |
2502 | |
2503 | drcf.use_saved_t = 0; |
2504 | pending_branch_cond = -1; |
e898de13 |
2505 | } |
44e6452e |
2506 | |
18b94127 |
2507 | // test irq? |
e05b81fc |
2508 | // XXX: delay slots.. |
2509 | if (drcf.test_irq && drcf.delayed_op != 2) { |
2510 | if (!drcf.delayed_op) |
2511 | emit_move_r_imm32(SHR_PC, pc); |
2512 | sr = rcache_get_reg(SHR_SR, RC_GR_RMW); |
2513 | FLUSH_CYCLES(sr); |
2514 | rcache_flush(); |
2515 | emith_call(sh2_drc_test_irq); |
2516 | drcf.test_irq = 0; |
2517 | } |
e898de13 |
2518 | |
f4bb5d6b |
2519 | do_host_disasm(tcache_id); |
52d759c3 |
2520 | |
44e6452e |
2521 | if (out_pc != 0 && drcf.delayed_op != 2) |
2522 | break; |
2523 | } |
f4bb5d6b |
2524 | |
18b94127 |
2525 | tmp = rcache_get_reg(SHR_SR, RC_GR_RMW); |
e05b81fc |
2526 | FLUSH_CYCLES(tmp); |
18b94127 |
2527 | rcache_flush(); |
44e6452e |
2528 | |
2529 | if (out_pc == (u32)-1) { |
2530 | // indirect jump -> back to dispatcher |
2531 | emith_jump(sh2_drc_dispatcher); |
2532 | } else { |
2533 | void *target; |
2534 | if (out_pc == 0) |
2535 | out_pc = pc; |
2536 | emit_move_r_imm32(SHR_PC, out_pc); |
2537 | rcache_flush(); |
2538 | |
2539 | target = dr_prepare_ext_branch(out_pc, sh2, tcache_id); |
2540 | if (target == NULL) |
2541 | return NULL; |
2542 | emith_jump_patchable(target); |
2543 | } |
18b94127 |
2544 | |
2545 | // link local branches |
2546 | for (i = 0; i < branch_patch_count; i++) { |
2547 | void *target; |
2548 | int t; |
18b94127 |
2549 | t = find_in_array(branch_target_pc, branch_target_count, branch_patch_pc[i]); |
44e6452e |
2550 | target = branch_target_ptr[t]; |
2551 | if (target == NULL) { |
fcdefcf6 |
2552 | // flush pc and go back to dispatcher (this should no longer happen) |
2553 | dbg(1, "stray branch to %08x %p", branch_patch_pc[i], tcache_ptr); |
18b94127 |
2554 | target = tcache_ptr; |
2555 | emit_move_r_imm32(SHR_PC, branch_patch_pc[i]); |
2556 | rcache_flush(); |
e05b81fc |
2557 | emith_jump(sh2_drc_dispatcher); |
18b94127 |
2558 | } |
2559 | emith_jump_patch(branch_patch_ptr[i], target); |
2560 | } |
2561 | |
a2b8c5a5 |
2562 | end_pc = pc; |
44e6452e |
2563 | |
f4bb5d6b |
2564 | // mark memory blocks as containing compiled code |
a2b8c5a5 |
2565 | // override any overlay blocks as they become unreachable anyway |
2566 | if (tcache_id != 0 || (this_block->addr & 0xc7fc0000) == 0x06000000) |
2567 | { |
2568 | u16 *drc_ram_blk = NULL; |
2569 | u32 mask = 0, shift = 0; |
2570 | |
2571 | if (tcache_id != 0) { |
2572 | // data array, BIOS |
2573 | drc_ram_blk = Pico32xMem->drcblk_da[sh2->is_slave]; |
2574 | shift = SH2_DRCBLK_DA_SHIFT; |
2575 | mask = 0xfff; |
f4bb5d6b |
2576 | } |
a2b8c5a5 |
2577 | else if ((this_block->addr & 0xc7fc0000) == 0x06000000) { |
2578 | // SDRAM |
2579 | drc_ram_blk = Pico32xMem->drcblk_ram; |
2580 | shift = SH2_DRCBLK_RAM_SHIFT; |
2581 | mask = 0x3ffff; |
f4bb5d6b |
2582 | } |
a2b8c5a5 |
2583 | |
2584 | drc_ram_blk[(base_pc >> shift) & mask] = (blkid_main << 1) | 1; |
2585 | for (pc = base_pc + 2; pc < end_pc; pc += 2) |
2586 | drc_ram_blk[(pc >> shift) & mask] = blkid_main << 1; |
2587 | |
04092e32 |
2588 | // mark subblocks |
a2b8c5a5 |
2589 | for (i = 0; i < branch_target_count; i++) |
2590 | if (branch_target_blkid[i] != 0) |
2591 | drc_ram_blk[(branch_target_pc[i] >> shift) & mask] = |
04092e32 |
2592 | (branch_target_blkid[i] << 1) | 1; |
2593 | |
2594 | // mark literals |
2595 | for (i = 0; i < literal_addr_count; i++) { |
2596 | tmp = literal_addr[i]; |
04092e32 |
2597 | drc_ram_blk[(tmp >> shift) & mask] = blkid_main << 1; |
2598 | if (!(tmp & 3)) // assume long |
2599 | drc_ram_blk[((tmp + 2) >> shift) & mask] = blkid_main << 1; |
2600 | } |
679af8a3 |
2601 | } |
2602 | |
f4bb5d6b |
2603 | tcache_ptrs[tcache_id] = tcache_ptr; |
2604 | |
a2b8c5a5 |
2605 | host_instructions_updated(block_entry, tcache_ptr); |
553c3eaa |
2606 | |
f4bb5d6b |
2607 | do_host_disasm(tcache_id); |
fcdefcf6 |
2608 | dbg(2, " block #%d,%d tcache %d/%d, insns %d -> %d %.3f", |
f4bb5d6b |
2609 | tcache_id, block_counts[tcache_id], |
2610 | tcache_ptr - tcache_bases[tcache_id], tcache_sizes[tcache_id], |
2611 | insns_compiled, host_insn_count, (double)host_insn_count / insns_compiled); |
2612 | if ((sh2->pc & 0xc6000000) == 0x02000000) // ROM |
fcdefcf6 |
2613 | dbg(2, " hash collisions %d/%d", hash_collisions, block_counts[tcache_id]); |
18b94127 |
2614 | /* |
2615 | printf("~~~\n"); |
2616 | tcache_dsm_ptrs[tcache_id] = block_entry; |
2617 | do_host_disasm(tcache_id); |
2618 | printf("~~~\n"); |
2619 | */ |
2620 | |
fcdefcf6 |
2621 | #if (DRC_DEBUG & 4) |
553c3eaa |
2622 | fflush(stdout); |
2623 | #endif |
2624 | |
679af8a3 |
2625 | return block_entry; |
679af8a3 |
2626 | } |
2627 | |
e05b81fc |
2628 | static void sh2_generate_utils(void) |
679af8a3 |
2629 | { |
e05b81fc |
2630 | int arg0, arg1, arg2, sr, tmp; |
2631 | void *sh2_drc_write_end, *sh2_drc_write_slot_end; |
52d759c3 |
2632 | |
5686d931 |
2633 | sh2_drc_write32 = p32x_sh2_write32; |
2634 | sh2_drc_read8 = p32x_sh2_read8; |
2635 | sh2_drc_read16 = p32x_sh2_read16; |
2636 | sh2_drc_read32 = p32x_sh2_read32; |
2637 | |
e05b81fc |
2638 | host_arg2reg(arg0, 0); |
2639 | host_arg2reg(arg1, 1); |
2640 | host_arg2reg(arg2, 2); |
2641 | emith_move_r_r(arg0, arg0); // nop |
679af8a3 |
2642 | |
e05b81fc |
2643 | // sh2_drc_exit(void) |
2644 | sh2_drc_exit = (void *)tcache_ptr; |
2645 | emit_do_static_regs(1, arg2); |
2646 | emith_sh2_drc_exit(); |
679af8a3 |
2647 | |
e05b81fc |
2648 | // sh2_drc_dispatcher(void) |
2649 | sh2_drc_dispatcher = (void *)tcache_ptr; |
2650 | sr = rcache_get_reg(SHR_SR, RC_GR_READ); |
2651 | emith_cmp_r_imm(sr, 0); |
2652 | emith_jump_cond(DCOND_LT, sh2_drc_exit); |
2653 | rcache_invalidate(); |
2654 | emith_ctx_read(arg0, SHR_PC * 4); |
2655 | emith_ctx_read(arg1, offsetof(SH2, is_slave)); |
2656 | emith_add_r_r_imm(arg2, CONTEXT_REG, offsetof(SH2, drc_tmp)); |
a2b8c5a5 |
2657 | emith_call(dr_lookup_block); |
e05b81fc |
2658 | emit_block_entry(); |
2659 | // lookup failed, call sh2_translate() |
2660 | emith_move_r_r(arg0, CONTEXT_REG); |
2661 | emith_ctx_read(arg1, offsetof(SH2, drc_tmp)); // tcache_id |
2662 | emith_call(sh2_translate); |
2663 | emit_block_entry(); |
2664 | // sh2_translate() failed, flush cache and retry |
2665 | emith_ctx_read(arg0, offsetof(SH2, drc_tmp)); |
2666 | emith_call(flush_tcache); |
2667 | emith_move_r_r(arg0, CONTEXT_REG); |
2668 | emith_ctx_read(arg1, offsetof(SH2, drc_tmp)); |
2669 | emith_call(sh2_translate); |
2670 | emit_block_entry(); |
2671 | // XXX: can't translate, fail |
c25d78ee |
2672 | emith_call(dr_failure); |
e05b81fc |
2673 | |
2674 | // sh2_drc_test_irq(void) |
2675 | // assumes it's called from main function (may jump to dispatcher) |
2676 | sh2_drc_test_irq = (void *)tcache_ptr; |
2677 | emith_ctx_read(arg1, offsetof(SH2, pending_level)); |
2678 | sr = rcache_get_reg(SHR_SR, RC_GR_READ); |
2679 | emith_lsr(arg0, sr, I_SHIFT); |
2680 | emith_and_r_imm(arg0, 0x0f); |
2681 | emith_cmp_r_r(arg1, arg0); // pending_level > ((sr >> 4) & 0x0f)? |
2682 | EMITH_SJMP_START(DCOND_GT); |
2683 | emith_ret_c(DCOND_LE); // nope, return |
2684 | EMITH_SJMP_END(DCOND_GT); |
2685 | // adjust SP |
2686 | tmp = rcache_get_reg(SHR_SP, RC_GR_RMW); |
2687 | emith_sub_r_imm(tmp, 4*2); |
2688 | rcache_clean(); |
2689 | // push SR |
2690 | tmp = rcache_get_reg_arg(0, SHR_SP); |
2691 | emith_add_r_imm(tmp, 4); |
2692 | tmp = rcache_get_reg_arg(1, SHR_SR); |
2693 | emith_clear_msb(tmp, tmp, 22); |
2694 | emith_move_r_r(arg2, CONTEXT_REG); |
5686d931 |
2695 | emith_call(p32x_sh2_write32); // XXX: use sh2_drc_write32? |
e05b81fc |
2696 | rcache_invalidate(); |
2697 | // push PC |
2698 | rcache_get_reg_arg(0, SHR_SP); |
2699 | emith_ctx_read(arg1, SHR_PC * 4); |
2700 | emith_move_r_r(arg2, CONTEXT_REG); |
2701 | emith_call(p32x_sh2_write32); |
2702 | rcache_invalidate(); |
2703 | // update I, cycles, do callback |
2704 | emith_ctx_read(arg1, offsetof(SH2, pending_level)); |
2705 | sr = rcache_get_reg(SHR_SR, RC_GR_RMW); |
2706 | emith_bic_r_imm(sr, I); |
2707 | emith_or_r_r_lsl(sr, arg1, I_SHIFT); |
2708 | emith_sub_r_imm(sr, 13 << 12); // at least 13 cycles |
2709 | rcache_flush(); |
2710 | emith_move_r_r(arg0, CONTEXT_REG); |
2711 | emith_call_ctx(offsetof(SH2, irq_callback)); // vector = sh2->irq_callback(sh2, level); |
2712 | // obtain new PC |
2713 | emith_lsl(arg0, arg0, 2); |
2714 | emith_ctx_read(arg1, SHR_VBR * 4); |
2715 | emith_add_r_r(arg0, arg1); |
2716 | emit_memhandler_read(2); |
2717 | emith_ctx_write(arg0, SHR_PC * 4); |
2718 | #ifdef __i386__ |
2719 | emith_add_r_imm(xSP, 4); // fix stack |
2720 | #endif |
2721 | emith_jump(sh2_drc_dispatcher); |
2722 | rcache_invalidate(); |
2723 | |
2724 | // sh2_drc_entry(SH2 *sh2) |
2725 | sh2_drc_entry = (void *)tcache_ptr; |
2726 | emith_sh2_drc_entry(); |
2727 | emith_move_r_r(CONTEXT_REG, arg0); // move ctx, arg0 |
2728 | emit_do_static_regs(0, arg2); |
2729 | emith_call(sh2_drc_test_irq); |
2730 | emith_jump(sh2_drc_dispatcher); |
2731 | |
2732 | // write-caused irq detection |
2733 | sh2_drc_write_end = tcache_ptr; |
2734 | emith_tst_r_r(arg0, arg0); |
2735 | EMITH_SJMP_START(DCOND_NE); |
2736 | emith_jump_ctx_c(DCOND_EQ, offsetof(SH2, drc_tmp)); // return |
2737 | EMITH_SJMP_END(DCOND_NE); |
e05b81fc |
2738 | emith_call(sh2_drc_test_irq); |
2739 | emith_jump_ctx(offsetof(SH2, drc_tmp)); |
2740 | |
2741 | // write-caused irq detection for writes in delay slot |
2742 | sh2_drc_write_slot_end = tcache_ptr; |
2743 | emith_tst_r_r(arg0, arg0); |
2744 | EMITH_SJMP_START(DCOND_NE); |
2745 | emith_jump_ctx_c(DCOND_EQ, offsetof(SH2, drc_tmp)); |
2746 | EMITH_SJMP_END(DCOND_NE); |
2747 | // just burn cycles to get back to dispatcher after branch is handled |
2748 | sr = rcache_get_reg(SHR_SR, RC_GR_RMW); |
2749 | emith_ctx_write(sr, offsetof(SH2, irq_cycles)); |
2750 | emith_clear_msb(sr, sr, 20); // clear cycles |
2751 | rcache_flush(); |
2752 | emith_jump_ctx(offsetof(SH2, drc_tmp)); |
2753 | |
2754 | // sh2_drc_write8(u32 a, u32 d) |
2755 | sh2_drc_write8 = (void *)tcache_ptr; |
2756 | emith_ret_to_ctx(offsetof(SH2, drc_tmp)); |
2757 | emith_ctx_read(arg2, offsetof(SH2, write8_tab)); |
2758 | emith_sh2_wcall(arg0, arg2, sh2_drc_write_end); |
2759 | |
2760 | // sh2_drc_write16(u32 a, u32 d) |
2761 | sh2_drc_write16 = (void *)tcache_ptr; |
2762 | emith_ret_to_ctx(offsetof(SH2, drc_tmp)); |
2763 | emith_ctx_read(arg2, offsetof(SH2, write16_tab)); |
2764 | emith_sh2_wcall(arg0, arg2, sh2_drc_write_end); |
2765 | |
2766 | // sh2_drc_write8_slot(u32 a, u32 d) |
2767 | sh2_drc_write8_slot = (void *)tcache_ptr; |
2768 | emith_ret_to_ctx(offsetof(SH2, drc_tmp)); |
2769 | emith_ctx_read(arg2, offsetof(SH2, write8_tab)); |
2770 | emith_sh2_wcall(arg0, arg2, sh2_drc_write_slot_end); |
2771 | |
2772 | // sh2_drc_write16_slot(u32 a, u32 d) |
2773 | sh2_drc_write16_slot = (void *)tcache_ptr; |
2774 | emith_ret_to_ctx(offsetof(SH2, drc_tmp)); |
2775 | emith_ctx_read(arg2, offsetof(SH2, write16_tab)); |
2776 | emith_sh2_wcall(arg0, arg2, sh2_drc_write_slot_end); |
2777 | |
5686d931 |
2778 | #ifdef PDB_NET |
2779 | // debug |
2780 | #define MAKE_READ_WRAPPER(func) { \ |
2781 | void *tmp = (void *)tcache_ptr; \ |
a2b8c5a5 |
2782 | emith_push_ret(); \ |
5686d931 |
2783 | emith_call(func); \ |
2784 | emith_ctx_read(arg2, offsetof(SH2, pdb_io_csum[0])); \ |
2785 | emith_addf_r_r(arg2, arg0); \ |
2786 | emith_ctx_write(arg2, offsetof(SH2, pdb_io_csum[0])); \ |
2787 | emith_ctx_read(arg2, offsetof(SH2, pdb_io_csum[1])); \ |
2788 | emith_adc_r_imm(arg2, 0x01000000); \ |
2789 | emith_ctx_write(arg2, offsetof(SH2, pdb_io_csum[1])); \ |
a2b8c5a5 |
2790 | emith_pop_and_ret(); \ |
5686d931 |
2791 | func = tmp; \ |
2792 | } |
2793 | #define MAKE_WRITE_WRAPPER(func) { \ |
2794 | void *tmp = (void *)tcache_ptr; \ |
2795 | emith_ctx_read(arg2, offsetof(SH2, pdb_io_csum[0])); \ |
2796 | emith_addf_r_r(arg2, arg1); \ |
2797 | emith_ctx_write(arg2, offsetof(SH2, pdb_io_csum[0])); \ |
2798 | emith_ctx_read(arg2, offsetof(SH2, pdb_io_csum[1])); \ |
2799 | emith_adc_r_imm(arg2, 0x01000000); \ |
2800 | emith_ctx_write(arg2, offsetof(SH2, pdb_io_csum[1])); \ |
2801 | emith_move_r_r(arg2, CONTEXT_REG); \ |
2802 | emith_jump(func); \ |
2803 | func = tmp; \ |
2804 | } |
2805 | |
2806 | MAKE_READ_WRAPPER(sh2_drc_read8); |
2807 | MAKE_READ_WRAPPER(sh2_drc_read16); |
2808 | MAKE_READ_WRAPPER(sh2_drc_read32); |
2809 | MAKE_WRITE_WRAPPER(sh2_drc_write8); |
2810 | MAKE_WRITE_WRAPPER(sh2_drc_write8_slot); |
2811 | MAKE_WRITE_WRAPPER(sh2_drc_write16); |
2812 | MAKE_WRITE_WRAPPER(sh2_drc_write16_slot); |
2813 | MAKE_WRITE_WRAPPER(sh2_drc_write32); |
fcdefcf6 |
2814 | #if (DRC_DEBUG & 4) |
5686d931 |
2815 | host_dasm_new_symbol(sh2_drc_read8); |
2816 | host_dasm_new_symbol(sh2_drc_read16); |
2817 | host_dasm_new_symbol(sh2_drc_read32); |
2818 | host_dasm_new_symbol(sh2_drc_write32); |
2819 | #endif |
2820 | #endif |
2821 | |
e05b81fc |
2822 | rcache_invalidate(); |
fcdefcf6 |
2823 | #if (DRC_DEBUG & 4) |
e05b81fc |
2824 | host_dasm_new_symbol(sh2_drc_entry); |
2825 | host_dasm_new_symbol(sh2_drc_dispatcher); |
2826 | host_dasm_new_symbol(sh2_drc_exit); |
2827 | host_dasm_new_symbol(sh2_drc_test_irq); |
2828 | host_dasm_new_symbol(sh2_drc_write_end); |
2829 | host_dasm_new_symbol(sh2_drc_write_slot_end); |
2830 | host_dasm_new_symbol(sh2_drc_write8); |
2831 | host_dasm_new_symbol(sh2_drc_write8_slot); |
2832 | host_dasm_new_symbol(sh2_drc_write16); |
2833 | host_dasm_new_symbol(sh2_drc_write16_slot); |
679af8a3 |
2834 | #endif |
679af8a3 |
2835 | } |
2836 | |
a2b8c5a5 |
2837 | static void *sh2_smc_rm_block_entry(block_desc *bd, int tcache_id) |
f4bb5d6b |
2838 | { |
04092e32 |
2839 | void *tmp; |
2840 | |
a2b8c5a5 |
2841 | // XXX: kill links somehow? |
fcdefcf6 |
2842 | dbg(2, " killing entry %08x, blkid %d", bd->addr, bd - block_tables[tcache_id]); |
04092e32 |
2843 | if (bd->addr == 0 || bd->tcache_ptr == NULL) { |
fcdefcf6 |
2844 | dbg(1, " killing dead block!? %08x", bd->addr); |
04092e32 |
2845 | return bd->tcache_ptr; |
2846 | } |
2847 | |
a2b8c5a5 |
2848 | // since we never reuse space of dead blocks, |
2849 | // insert jump to dispatcher for blocks that are linked to this point |
04092e32 |
2850 | //emith_jump_at(bd->tcache_ptr, sh2_drc_dispatcher); |
2851 | |
2852 | // attempt to handle self-modifying blocks by exiting at nearest known PC |
2853 | tmp = tcache_ptr; |
2854 | tcache_ptr = bd->tcache_ptr; |
2855 | emit_move_r_imm32(SHR_PC, bd->addr); |
2856 | rcache_flush(); |
2857 | emith_jump(sh2_drc_dispatcher); |
2858 | tcache_ptr = tmp; |
2859 | |
2860 | bd->addr = 0; |
a2b8c5a5 |
2861 | return bd->tcache_ptr; |
2862 | } |
f4bb5d6b |
2863 | |
a2b8c5a5 |
2864 | static void sh2_smc_rm_block(u32 a, u16 *drc_ram_blk, int tcache_id, u32 shift, u32 mask) |
2865 | { |
2866 | //block_link *bl = block_links[tcache_id]; |
2867 | //int bl_count = block_link_counts[tcache_id]; |
2868 | block_desc *btab = block_tables[tcache_id]; |
2869 | u16 *p = drc_ram_blk + ((a & mask) >> shift); |
04092e32 |
2870 | u16 *pmax = drc_ram_blk + (mask >> shift); |
a2b8c5a5 |
2871 | void *tcache_min, *tcache_max; |
04092e32 |
2872 | int zeros; |
2873 | u16 *pt; |
2874 | |
2875 | // Figure out what the main block is, as subblocks also have the flag set. |
2876 | // This relies on sub having single entry. It's possible that innocent |
2877 | // block might be hit, but that's not such a big deal. |
2878 | if ((p[0] >> 1) != (p[1] >> 1)) { |
2879 | for (; p > drc_ram_blk; p--) |
2880 | if (p[-1] == 0 || (p[-1] >> 1) == (*p >> 1)) |
2881 | break; |
2882 | } |
2883 | pt = p; |
a2b8c5a5 |
2884 | |
04092e32 |
2885 | for (; p > drc_ram_blk; p--) |
2886 | if ((*p & 1)) |
2887 | break; |
f4bb5d6b |
2888 | |
04092e32 |
2889 | if (!(*p & 1)) { |
fcdefcf6 |
2890 | dbg(1, "smc rm: missing block start for %08x?", a); |
04092e32 |
2891 | p = pt; |
2892 | } |
2893 | |
2894 | if (*p == 0) |
2895 | return; |
2896 | |
2897 | tcache_min = tcache_max = sh2_smc_rm_block_entry(&btab[*p >> 1], tcache_id); |
2898 | *p = 0; |
a2b8c5a5 |
2899 | |
04092e32 |
2900 | for (p++, zeros = 0; p < pmax && zeros < MAX_LITERAL_OFFSET / 2; p++) { |
a2b8c5a5 |
2901 | int id = *p >> 1; |
04092e32 |
2902 | if (id == 0) { |
2903 | // there can be holes because games sometimes keep variables |
2904 | // directly in literal pool and we don't inline them to avoid recompile |
2905 | // (Star Wars Arcade) |
2906 | zeros++; |
2907 | continue; |
2908 | } |
2909 | if (*p & 1) { |
2910 | if (id == (p[1] >> 1)) |
2911 | // hit other block |
2912 | break; |
2913 | tcache_max = sh2_smc_rm_block_entry(&btab[id], tcache_id); |
2914 | } |
a2b8c5a5 |
2915 | *p = 0; |
f4bb5d6b |
2916 | } |
2917 | |
04092e32 |
2918 | host_instructions_updated(tcache_min, (void *)((char *)tcache_max + 4*4 + 4)); |
f4bb5d6b |
2919 | } |
2920 | |
2921 | void sh2_drc_wcheck_ram(unsigned int a, int val, int cpuid) |
2922 | { |
fcdefcf6 |
2923 | dbg(2, "%csh2 smc check @%08x", cpuid ? 's' : 'm', a); |
a2b8c5a5 |
2924 | sh2_smc_rm_block(a, Pico32xMem->drcblk_ram, 0, SH2_DRCBLK_RAM_SHIFT, 0x3ffff); |
f4bb5d6b |
2925 | } |
2926 | |
2927 | void sh2_drc_wcheck_da(unsigned int a, int val, int cpuid) |
2928 | { |
fcdefcf6 |
2929 | dbg(2, "%csh2 smc check @%08x", cpuid ? 's' : 'm', a); |
a2b8c5a5 |
2930 | sh2_smc_rm_block(a, Pico32xMem->drcblk_da[cpuid], |
2931 | 1 + cpuid, SH2_DRCBLK_DA_SHIFT, 0xfff); |
f4bb5d6b |
2932 | } |
2933 | |
ed4402a7 |
2934 | int sh2_execute(SH2 *sh2c, int cycles) |
679af8a3 |
2935 | { |
e05b81fc |
2936 | int ret_cycles; |
52d759c3 |
2937 | |
ed4402a7 |
2938 | sh2c->cycles_timeslice = cycles; |
679af8a3 |
2939 | |
2940 | // cycles are kept in SHR_SR unused bits (upper 20) |
65514d85 |
2941 | // bit11 contains T saved for delay slot |
18b94127 |
2942 | // others are usual SH2 flags |
52d759c3 |
2943 | sh2c->sr &= 0x3f3; |
2944 | sh2c->sr |= cycles << 12; |
e05b81fc |
2945 | sh2_drc_entry(sh2c); |
679af8a3 |
2946 | |
e05b81fc |
2947 | // TODO: irq cycles |
2948 | ret_cycles = (signed int)sh2c->sr >> 12; |
2949 | if (ret_cycles > 0) |
fcdefcf6 |
2950 | dbg(1, "warning: drc returned with cycles: %d", ret_cycles); |
679af8a3 |
2951 | |
ed4402a7 |
2952 | return sh2c->cycles_timeslice - ret_cycles; |
679af8a3 |
2953 | } |
2954 | |
fcdefcf6 |
2955 | #if (DRC_DEBUG & 2) |
9bb5d91c |
2956 | void block_stats(void) |
f4bb5d6b |
2957 | { |
2958 | int c, b, i, total = 0; |
2959 | |
9bb5d91c |
2960 | printf("block stats:\n"); |
f4bb5d6b |
2961 | for (b = 0; b < ARRAY_SIZE(block_tables); b++) |
2962 | for (i = 0; i < block_counts[b]; i++) |
2963 | if (block_tables[b][i].addr != 0) |
2964 | total += block_tables[b][i].refcount; |
2965 | |
2966 | for (c = 0; c < 10; c++) { |
2967 | block_desc *blk, *maxb = NULL; |
2968 | int max = 0; |
2969 | for (b = 0; b < ARRAY_SIZE(block_tables); b++) { |
2970 | for (i = 0; i < block_counts[b]; i++) { |
2971 | blk = &block_tables[b][i]; |
2972 | if (blk->addr != 0 && blk->refcount > max) { |
2973 | max = blk->refcount; |
2974 | maxb = blk; |
2975 | } |
2976 | } |
2977 | } |
2978 | if (maxb == NULL) |
2979 | break; |
2980 | printf("%08x %9d %2.3f%%\n", maxb->addr, maxb->refcount, |
2981 | (double)maxb->refcount / total * 100.0); |
2982 | maxb->refcount = 0; |
2983 | } |
553c3eaa |
2984 | |
2985 | for (b = 0; b < ARRAY_SIZE(block_tables); b++) |
2986 | for (i = 0; i < block_counts[b]; i++) |
2987 | block_tables[b][i].refcount = 0; |
f4bb5d6b |
2988 | } |
553c3eaa |
2989 | #else |
2990 | #define block_stats() |
f4bb5d6b |
2991 | #endif |
2992 | |
553c3eaa |
2993 | void sh2_drc_flush_all(void) |
2994 | { |
2995 | block_stats(); |
2996 | flush_tcache(0); |
2997 | flush_tcache(1); |
2998 | flush_tcache(2); |
2999 | } |
3000 | |
23686515 |
3001 | void sh2_drc_mem_setup(SH2 *sh2) |
3002 | { |
3003 | // fill the convenience pointers |
3004 | sh2->p_bios = sh2->is_slave ? Pico32xMem->sh2_rom_s : Pico32xMem->sh2_rom_m; |
3005 | sh2->p_da = Pico32xMem->data_array[sh2->is_slave]; |
3006 | sh2->p_sdram = Pico32xMem->sdram; |
3007 | sh2->p_rom = Pico.rom; |
3008 | } |
3009 | |
679af8a3 |
3010 | int sh2_drc_init(SH2 *sh2) |
3011 | { |
44e6452e |
3012 | int i; |
7f5a3fc1 |
3013 | |
44e6452e |
3014 | if (block_tables[0] == NULL) |
3015 | { |
3016 | for (i = 0; i < TCACHE_BUFFERS; i++) { |
3017 | block_tables[i] = calloc(block_max_counts[i], sizeof(*block_tables[0])); |
3018 | if (block_tables[i] == NULL) |
3019 | goto fail; |
3020 | // max 2 block links (exits) per block |
3021 | block_links[i] = calloc(block_max_counts[i] * 2, sizeof(*block_links[0])); |
3022 | if (block_links[i] == NULL) |
3023 | goto fail; |
3024 | } |
3025 | memset(block_counts, 0, sizeof(block_counts)); |
3026 | memset(block_link_counts, 0, sizeof(block_link_counts)); |
e898de13 |
3027 | |
44e6452e |
3028 | drc_cmn_init(); |
8796b7ee |
3029 | tcache_ptr = tcache; |
3030 | sh2_generate_utils(); |
a2b8c5a5 |
3031 | host_instructions_updated(tcache, tcache_ptr); |
8796b7ee |
3032 | |
8796b7ee |
3033 | tcache_bases[0] = tcache_ptrs[0] = tcache_ptr; |
44e6452e |
3034 | for (i = 1; i < ARRAY_SIZE(tcache_bases); i++) |
f4bb5d6b |
3035 | tcache_bases[i] = tcache_ptrs[i] = tcache_bases[i - 1] + tcache_sizes[i - 1]; |
f4bb5d6b |
3036 | |
553c3eaa |
3037 | // tmp |
3038 | PicoOpt |= POPT_DIS_VDP_FIFO; |
3039 | |
fcdefcf6 |
3040 | #if (DRC_DEBUG & 4) |
f4bb5d6b |
3041 | for (i = 0; i < ARRAY_SIZE(block_tables); i++) |
3042 | tcache_dsm_ptrs[i] = tcache_bases[i]; |
8796b7ee |
3043 | // disasm the utils |
3044 | tcache_dsm_ptrs[0] = tcache; |
3045 | do_host_disasm(0); |
f4bb5d6b |
3046 | #endif |
e898de13 |
3047 | #if (DRC_DEBUG & 1) |
3048 | hash_collisions = 0; |
3049 | #endif |
679af8a3 |
3050 | } |
3051 | |
f4bb5d6b |
3052 | if (hash_table == NULL) { |
3053 | hash_table = calloc(sizeof(hash_table[0]), MAX_HASH_ENTRIES); |
3054 | if (hash_table == NULL) |
44e6452e |
3055 | goto fail; |
f4bb5d6b |
3056 | } |
41397701 |
3057 | |
679af8a3 |
3058 | return 0; |
44e6452e |
3059 | |
3060 | fail: |
3061 | sh2_drc_finish(sh2); |
3062 | return -1; |
41397701 |
3063 | } |
3064 | |
e898de13 |
3065 | void sh2_drc_finish(SH2 *sh2) |
3066 | { |
44e6452e |
3067 | int i; |
3068 | |
f4bb5d6b |
3069 | if (block_tables[0] != NULL) { |
f4bb5d6b |
3070 | block_stats(); |
44e6452e |
3071 | |
3072 | for (i = 0; i < TCACHE_BUFFERS; i++) { |
fcdefcf6 |
3073 | #if (DRC_DEBUG & 4) |
44e6452e |
3074 | printf("~~~ tcache %d\n", i); |
3075 | tcache_dsm_ptrs[i] = tcache_bases[i]; |
3076 | tcache_ptr = tcache_ptrs[i]; |
3077 | do_host_disasm(i); |
3078 | #endif |
3079 | |
3080 | if (block_tables[i] != NULL) |
3081 | free(block_tables[i]); |
3082 | block_tables[i] = NULL; |
3083 | if (block_links[i] == NULL) |
3084 | free(block_links[i]); |
3085 | block_links[i] = NULL; |
3086 | } |
7f5a3fc1 |
3087 | |
3088 | drc_cmn_cleanup(); |
e898de13 |
3089 | } |
3090 | |
f4bb5d6b |
3091 | if (hash_table != NULL) { |
3092 | free(hash_table); |
3093 | hash_table = NULL; |
3094 | } |
e898de13 |
3095 | } |
cff531af |
3096 | |
00faec9c |
3097 | #endif /* DRC_SH2 */ |
3098 | |
3099 | static void *dr_get_pc_base(u32 pc, int is_slave) |
3100 | { |
3101 | void *ret = NULL; |
3102 | u32 mask = 0; |
3103 | |
3104 | if ((pc & ~0x7ff) == 0) { |
3105 | // BIOS |
3106 | ret = is_slave ? Pico32xMem->sh2_rom_s : Pico32xMem->sh2_rom_m; |
3107 | mask = 0x7ff; |
3108 | } |
3109 | else if ((pc & 0xfffff000) == 0xc0000000) { |
3110 | // data array |
3111 | ret = Pico32xMem->data_array[is_slave]; |
3112 | mask = 0xfff; |
3113 | } |
3114 | else if ((pc & 0xc6000000) == 0x06000000) { |
3115 | // SDRAM |
3116 | ret = Pico32xMem->sdram; |
3117 | mask = 0x03ffff; |
3118 | } |
3119 | else if ((pc & 0xc6000000) == 0x02000000) { |
3120 | // ROM |
3121 | ret = Pico.rom; |
3122 | mask = 0x3fffff; |
3123 | } |
3124 | |
3125 | if (ret == NULL) |
3126 | return (void *)-1; // NULL is valid value |
3127 | |
3128 | return (char *)ret - (pc & ~mask); |
3129 | } |
3130 | |
3131 | void scan_block(u32 base_pc, int is_slave, u8 *op_flags, u32 *end_pc) |
3132 | { |
3133 | u16 *dr_pc_base; |
3134 | u32 pc, target, op; |
3135 | int cycles; |
3136 | |
3137 | memset(op_flags, 0, BLOCK_CYCLE_LIMIT); |
3138 | |
3139 | dr_pc_base = dr_get_pc_base(base_pc, is_slave); |
3140 | |
3141 | for (cycles = 0, pc = base_pc; cycles < BLOCK_CYCLE_LIMIT-1; cycles++, pc += 2) { |
3142 | op = FETCH_OP(pc); |
3143 | if ((op & 0xf000) == 0xa000 || (op & 0xf000) == 0xb000) { // BRA, BSR |
3144 | signed int offs = ((signed int)(op << 20) >> 19); |
3145 | pc += 2; |
3146 | OP_FLAGS(pc) |= OF_DELAY_OP; |
3147 | target = pc + offs + 2; |
3148 | if (base_pc <= target && target < base_pc + BLOCK_CYCLE_LIMIT * 2) |
3149 | OP_FLAGS(target) |= OF_TARGET; |
3150 | break; |
3151 | } |
3152 | if ((op & 0xf000) == 0) { |
3153 | op &= 0xff; |
3154 | if (op == 0x1b) // SLEEP |
3155 | break; |
3156 | // BRAF, BSRF, RTS, RTE |
3157 | if (op == 0x23 || op == 0x03 || op == 0x0b || op == 0x2b) { |
3158 | pc += 2; |
3159 | OP_FLAGS(pc) |= OF_DELAY_OP; |
3160 | break; |
3161 | } |
3162 | continue; |
3163 | } |
3164 | if ((op & 0xf0df) == 0x400b) { // JMP, JSR |
3165 | pc += 2; |
3166 | OP_FLAGS(pc) |= OF_DELAY_OP; |
3167 | break; |
3168 | } |
3169 | if ((op & 0xf900) == 0x8900) { // BT(S), BF(S) |
3170 | signed int offs = ((signed int)(op << 24) >> 23); |
3171 | if (op & 0x0400) |
3172 | OP_FLAGS(pc + 2) |= OF_DELAY_OP; |
3173 | target = pc + offs + 4; |
3174 | if (base_pc <= target && target < base_pc + BLOCK_CYCLE_LIMIT * 2) |
3175 | OP_FLAGS(target) |= OF_TARGET; |
3176 | } |
3177 | if ((op & 0xff00) == 0xc300) // TRAPA |
3178 | break; |
3179 | } |
3180 | *end_pc = pc; |
3181 | } |
3182 | |
cff531af |
3183 | // vim:shiftwidth=2:expandtab |