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ef79bbde P |
1 | /*************************************************************************** |
2 | * Copyright (C) 2007 Ryan Schultz, PCSX-df Team, PCSX team * | |
3 | * * | |
4 | * This program is free software; you can redistribute it and/or modify * | |
5 | * it under the terms of the GNU General Public License as published by * | |
6 | * the Free Software Foundation; either version 2 of the License, or * | |
7 | * (at your option) any later version. * | |
8 | * * | |
9 | * This program is distributed in the hope that it will be useful, * | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of * | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * | |
12 | * GNU General Public License for more details. * | |
13 | * * | |
14 | * You should have received a copy of the GNU General Public License * | |
15 | * along with this program; if not, write to the * | |
16 | * Free Software Foundation, Inc., * | |
17 | * 51 Franklin Street, Fifth Floor, Boston, MA 02111-1307 USA. * | |
18 | ***************************************************************************/ | |
19 | ||
20 | /* | |
21 | * PSX memory functions. | |
22 | */ | |
23 | ||
24 | // TODO: Implement caches & cycle penalty. | |
25 | ||
26 | #include "psxmem.h" | |
87e5b45f | 27 | #include "psxmem_map.h" |
ef79bbde P |
28 | #include "r3000a.h" |
29 | #include "psxhw.h" | |
fc8145b7 | 30 | #include "debug.h" |
ce0e7ac9 | 31 | |
32 | #include "memmap.h" | |
ef79bbde P |
33 | |
34 | #ifndef MAP_ANONYMOUS | |
35 | #define MAP_ANONYMOUS MAP_ANON | |
36 | #endif | |
37 | ||
87e5b45f | 38 | void *(*psxMapHook)(unsigned long addr, size_t size, int is_fixed, |
39 | enum psxMapTag tag); | |
40 | void (*psxUnmapHook)(void *ptr, size_t size, enum psxMapTag tag); | |
41 | ||
42 | void *psxMap(unsigned long addr, size_t size, int is_fixed, | |
43 | enum psxMapTag tag) | |
44 | { | |
a62012a7 | 45 | #ifdef LIGHTREC |
38c19eff | 46 | int flags = MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED; |
a62012a7 T |
47 | #else |
48 | int flags = MAP_PRIVATE | MAP_ANONYMOUS; | |
49 | #endif | |
50 | ||
5644b26c | 51 | int try_ = 0; |
b0dd9956 | 52 | unsigned long mask; |
87e5b45f | 53 | void *req, *ret; |
54 | ||
b0dd9956 | 55 | retry: |
56 | if (psxMapHook != NULL) { | |
85f23982 | 57 | ret = psxMapHook(addr, size, 0, tag); |
58 | if (ret == NULL) | |
59 | return NULL; | |
60 | } | |
61 | else { | |
62 | /* avoid MAP_FIXED, it overrides existing mappings.. */ | |
63 | /* if (is_fixed) | |
64 | flags |= MAP_FIXED; */ | |
65 | ||
66 | req = (void *)addr; | |
67 | ret = mmap(req, size, PROT_READ | PROT_WRITE, flags, -1, 0); | |
68 | if (ret == MAP_FAILED) | |
69 | return NULL; | |
b0dd9956 | 70 | } |
87e5b45f | 71 | |
b0dd9956 | 72 | if (addr != 0 && ret != (void *)addr) { |
73 | SysMessage("psxMap: warning: wanted to map @%08x, got %p\n", | |
74 | addr, ret); | |
75 | ||
0069615f | 76 | if (is_fixed) { |
77 | psxUnmap(ret, size, tag); | |
78 | return NULL; | |
79 | } | |
80 | ||
5644b26c | 81 | if (((addr ^ (unsigned long)ret) & ~0xff000000l) && try_ < 2) |
b0dd9956 | 82 | { |
83 | psxUnmap(ret, size, tag); | |
84 | ||
85 | // try to use similarly aligned memory instead | |
86 | // (recompiler needs this) | |
5644b26c | 87 | mask = try_ ? 0xffff : 0xffffff; |
88 | addr = ((unsigned long)ret + mask) & ~mask; | |
89 | try_++; | |
b0dd9956 | 90 | goto retry; |
91 | } | |
92 | } | |
87e5b45f | 93 | |
94 | return ret; | |
95 | } | |
96 | ||
97 | void psxUnmap(void *ptr, size_t size, enum psxMapTag tag) | |
98 | { | |
99 | if (psxUnmapHook != NULL) { | |
100 | psxUnmapHook(ptr, size, tag); | |
101 | return; | |
102 | } | |
103 | ||
88901dd2 | 104 | if (ptr) |
105 | munmap(ptr, size); | |
87e5b45f | 106 | } |
107 | ||
ef79bbde P |
108 | s8 *psxM = NULL; // Kernel & User Memory (2 Meg) |
109 | s8 *psxP = NULL; // Parallel Port (64K) | |
110 | s8 *psxR = NULL; // BIOS ROM (512K) | |
111 | s8 *psxH = NULL; // Scratch Pad (1K) & Hardware Registers (8K) | |
112 | ||
113 | u8 **psxMemWLUT = NULL; | |
114 | u8 **psxMemRLUT = NULL; | |
115 | ||
116 | /* Playstation Memory Map (from Playstation doc by Joshua Walker) | |
117 | 0x0000_0000-0x0000_ffff Kernel (64K) | |
118 | 0x0001_0000-0x001f_ffff User Memory (1.9 Meg) | |
119 | ||
120 | 0x1f00_0000-0x1f00_ffff Parallel Port (64K) | |
121 | ||
122 | 0x1f80_0000-0x1f80_03ff Scratch Pad (1024 bytes) | |
123 | ||
124 | 0x1f80_1000-0x1f80_2fff Hardware Registers (8K) | |
125 | ||
126 | 0x1fc0_0000-0x1fc7_ffff BIOS (512K) | |
127 | ||
128 | 0x8000_0000-0x801f_ffff Kernel and User Memory Mirror (2 Meg) Cached | |
129 | 0x9fc0_0000-0x9fc7_ffff BIOS Mirror (512K) Cached | |
130 | ||
131 | 0xa000_0000-0xa01f_ffff Kernel and User Memory Mirror (2 Meg) Uncached | |
132 | 0xbfc0_0000-0xbfc7_ffff BIOS Mirror (512K) Uncached | |
133 | */ | |
134 | ||
135 | int psxMemInit() { | |
136 | int i; | |
137 | ||
138 | psxMemRLUT = (u8 **)malloc(0x10000 * sizeof(void *)); | |
139 | psxMemWLUT = (u8 **)malloc(0x10000 * sizeof(void *)); | |
140 | memset(psxMemRLUT, 0, 0x10000 * sizeof(void *)); | |
141 | memset(psxMemWLUT, 0, 0x10000 * sizeof(void *)); | |
142 | ||
a62012a7 | 143 | #ifdef LIGHTREC |
38c19eff | 144 | psxM = psxMap(0x30000000, 0x00210000, 1, MAP_TAG_RAM); |
a62012a7 T |
145 | #else |
146 | psxM = psxMap(0x80000000, 0x00210000, 1, MAP_TAG_RAM); | |
147 | #endif | |
a327ad27 | 148 | #ifndef RAM_FIXED |
a4874585 | 149 | if (psxM == NULL) |
f23d3386 | 150 | psxM = psxMap(0x77000000, 0x00210000, 0, MAP_TAG_RAM); |
a327ad27 | 151 | #endif |
87e5b45f | 152 | if (psxM == NULL) { |
a327ad27 | 153 | SysMessage(_("mapping main RAM failed")); |
154 | return -1; | |
155 | } | |
ef79bbde P |
156 | |
157 | psxP = &psxM[0x200000]; | |
a62012a7 | 158 | #ifdef LIGHTREC |
38c19eff PC |
159 | psxH = psxMap(0x4f800000, 0x10000, 0, MAP_TAG_OTHER); |
160 | psxR = psxMap(0x4fc00000, 0x80000, 0, MAP_TAG_OTHER); | |
a62012a7 T |
161 | #else |
162 | psxH = psxMap(0x1f800000, 0x10000, 0, MAP_TAG_OTHER); | |
163 | psxR = psxMap(0x1fc00000, 0x80000, 0, MAP_TAG_OTHER); | |
164 | #endif | |
ef79bbde P |
165 | |
166 | if (psxMemRLUT == NULL || psxMemWLUT == NULL || | |
6d760c92 | 167 | psxR == NULL || psxP == NULL || psxH == NULL) { |
ef79bbde | 168 | SysMessage(_("Error allocating memory!")); |
88901dd2 | 169 | psxMemShutdown(); |
ef79bbde P |
170 | return -1; |
171 | } | |
172 | ||
173 | // MemR | |
174 | for (i = 0; i < 0x80; i++) psxMemRLUT[i + 0x0000] = (u8 *)&psxM[(i & 0x1f) << 16]; | |
175 | ||
176 | memcpy(psxMemRLUT + 0x8000, psxMemRLUT, 0x80 * sizeof(void *)); | |
177 | memcpy(psxMemRLUT + 0xa000, psxMemRLUT, 0x80 * sizeof(void *)); | |
178 | ||
179 | psxMemRLUT[0x1f00] = (u8 *)psxP; | |
180 | psxMemRLUT[0x1f80] = (u8 *)psxH; | |
181 | ||
182 | for (i = 0; i < 0x08; i++) psxMemRLUT[i + 0x1fc0] = (u8 *)&psxR[i << 16]; | |
183 | ||
184 | memcpy(psxMemRLUT + 0x9fc0, psxMemRLUT + 0x1fc0, 0x08 * sizeof(void *)); | |
185 | memcpy(psxMemRLUT + 0xbfc0, psxMemRLUT + 0x1fc0, 0x08 * sizeof(void *)); | |
186 | ||
187 | // MemW | |
188 | for (i = 0; i < 0x80; i++) psxMemWLUT[i + 0x0000] = (u8 *)&psxM[(i & 0x1f) << 16]; | |
189 | ||
190 | memcpy(psxMemWLUT + 0x8000, psxMemWLUT, 0x80 * sizeof(void *)); | |
191 | memcpy(psxMemWLUT + 0xa000, psxMemWLUT, 0x80 * sizeof(void *)); | |
192 | ||
193 | psxMemWLUT[0x1f00] = (u8 *)psxP; | |
194 | psxMemWLUT[0x1f80] = (u8 *)psxH; | |
195 | ||
196 | return 0; | |
197 | } | |
198 | ||
199 | void psxMemReset() { | |
200 | FILE *f = NULL; | |
201 | char bios[1024]; | |
202 | ||
203 | memset(psxM, 0, 0x00200000); | |
23643ee7 | 204 | memset(psxP, 0xff, 0x00010000); |
ef79bbde P |
205 | |
206 | if (strcmp(Config.Bios, "HLE") != 0) { | |
207 | sprintf(bios, "%s/%s", Config.BiosDir, Config.Bios); | |
208 | f = fopen(bios, "rb"); | |
209 | ||
210 | if (f == NULL) { | |
211 | SysMessage(_("Could not open BIOS:\"%s\". Enabling HLE Bios!\n"), bios); | |
212 | memset(psxR, 0, 0x80000); | |
213 | Config.HLE = TRUE; | |
214 | } else { | |
215 | fread(psxR, 1, 0x80000, f); | |
216 | fclose(f); | |
217 | Config.HLE = FALSE; | |
218 | } | |
219 | } else Config.HLE = TRUE; | |
220 | } | |
221 | ||
222 | void psxMemShutdown() { | |
88901dd2 | 223 | psxUnmap(psxM, 0x00210000, MAP_TAG_RAM); psxM = NULL; |
224 | psxUnmap(psxH, 0x10000, MAP_TAG_OTHER); psxH = NULL; | |
225 | psxUnmap(psxR, 0x80000, MAP_TAG_OTHER); psxR = NULL; | |
ef79bbde | 226 | |
88901dd2 | 227 | free(psxMemRLUT); psxMemRLUT = NULL; |
228 | free(psxMemWLUT); psxMemWLUT = NULL; | |
ef79bbde P |
229 | } |
230 | ||
231 | static int writeok = 1; | |
232 | ||
233 | u8 psxMemRead8(u32 mem) { | |
234 | char *p; | |
235 | u32 t; | |
236 | ||
237 | t = mem >> 16; | |
9dd7d179 | 238 | if (t == 0x1f80 || t == 0x9f80 || t == 0xbf80) { |
239 | if ((mem & 0xffff) < 0x400) | |
ef79bbde P |
240 | return psxHu8(mem); |
241 | else | |
242 | return psxHwRead8(mem); | |
243 | } else { | |
244 | p = (char *)(psxMemRLUT[t]); | |
245 | if (p != NULL) { | |
246 | if (Config.Debug) | |
247 | DebugCheckBP((mem & 0xffffff) | 0x80000000, R1); | |
248 | return *(u8 *)(p + (mem & 0xffff)); | |
249 | } else { | |
250 | #ifdef PSXMEM_LOG | |
251 | PSXMEM_LOG("err lb %8.8lx\n", mem); | |
252 | #endif | |
253 | return 0; | |
254 | } | |
255 | } | |
256 | } | |
257 | ||
258 | u16 psxMemRead16(u32 mem) { | |
259 | char *p; | |
260 | u32 t; | |
261 | ||
262 | t = mem >> 16; | |
9dd7d179 | 263 | if (t == 0x1f80 || t == 0x9f80 || t == 0xbf80) { |
264 | if ((mem & 0xffff) < 0x400) | |
ef79bbde P |
265 | return psxHu16(mem); |
266 | else | |
267 | return psxHwRead16(mem); | |
268 | } else { | |
269 | p = (char *)(psxMemRLUT[t]); | |
270 | if (p != NULL) { | |
271 | if (Config.Debug) | |
272 | DebugCheckBP((mem & 0xffffff) | 0x80000000, R2); | |
273 | return SWAPu16(*(u16 *)(p + (mem & 0xffff))); | |
274 | } else { | |
275 | #ifdef PSXMEM_LOG | |
276 | PSXMEM_LOG("err lh %8.8lx\n", mem); | |
277 | #endif | |
278 | return 0; | |
279 | } | |
280 | } | |
281 | } | |
282 | ||
283 | u32 psxMemRead32(u32 mem) { | |
284 | char *p; | |
285 | u32 t; | |
286 | ||
287 | t = mem >> 16; | |
9dd7d179 | 288 | if (t == 0x1f80 || t == 0x9f80 || t == 0xbf80) { |
289 | if ((mem & 0xffff) < 0x400) | |
ef79bbde P |
290 | return psxHu32(mem); |
291 | else | |
292 | return psxHwRead32(mem); | |
293 | } else { | |
294 | p = (char *)(psxMemRLUT[t]); | |
295 | if (p != NULL) { | |
296 | if (Config.Debug) | |
297 | DebugCheckBP((mem & 0xffffff) | 0x80000000, R4); | |
298 | return SWAPu32(*(u32 *)(p + (mem & 0xffff))); | |
299 | } else { | |
300 | #ifdef PSXMEM_LOG | |
301 | if (writeok) { PSXMEM_LOG("err lw %8.8lx\n", mem); } | |
302 | #endif | |
303 | return 0; | |
304 | } | |
305 | } | |
306 | } | |
307 | ||
308 | void psxMemWrite8(u32 mem, u8 value) { | |
309 | char *p; | |
310 | u32 t; | |
311 | ||
312 | t = mem >> 16; | |
9dd7d179 | 313 | if (t == 0x1f80 || t == 0x9f80 || t == 0xbf80) { |
314 | if ((mem & 0xffff) < 0x400) | |
ef79bbde P |
315 | psxHu8(mem) = value; |
316 | else | |
317 | psxHwWrite8(mem, value); | |
318 | } else { | |
319 | p = (char *)(psxMemWLUT[t]); | |
320 | if (p != NULL) { | |
321 | if (Config.Debug) | |
322 | DebugCheckBP((mem & 0xffffff) | 0x80000000, W1); | |
323 | *(u8 *)(p + (mem & 0xffff)) = value; | |
324 | #ifdef PSXREC | |
325 | psxCpu->Clear((mem & (~3)), 1); | |
326 | #endif | |
327 | } else { | |
328 | #ifdef PSXMEM_LOG | |
329 | PSXMEM_LOG("err sb %8.8lx\n", mem); | |
330 | #endif | |
331 | } | |
332 | } | |
333 | } | |
334 | ||
335 | void psxMemWrite16(u32 mem, u16 value) { | |
336 | char *p; | |
337 | u32 t; | |
338 | ||
339 | t = mem >> 16; | |
9dd7d179 | 340 | if (t == 0x1f80 || t == 0x9f80 || t == 0xbf80) { |
341 | if ((mem & 0xffff) < 0x400) | |
ef79bbde P |
342 | psxHu16ref(mem) = SWAPu16(value); |
343 | else | |
344 | psxHwWrite16(mem, value); | |
345 | } else { | |
346 | p = (char *)(psxMemWLUT[t]); | |
347 | if (p != NULL) { | |
348 | if (Config.Debug) | |
349 | DebugCheckBP((mem & 0xffffff) | 0x80000000, W2); | |
350 | *(u16 *)(p + (mem & 0xffff)) = SWAPu16(value); | |
351 | #ifdef PSXREC | |
3e31e934 | 352 | psxCpu->Clear((mem & (~3)), 1); |
ef79bbde P |
353 | #endif |
354 | } else { | |
355 | #ifdef PSXMEM_LOG | |
356 | PSXMEM_LOG("err sh %8.8lx\n", mem); | |
357 | #endif | |
358 | } | |
359 | } | |
360 | } | |
361 | ||
362 | void psxMemWrite32(u32 mem, u32 value) { | |
363 | char *p; | |
364 | u32 t; | |
365 | ||
366 | // if ((mem&0x1fffff) == 0x71E18 || value == 0x48088800) SysPrintf("t2fix!!\n"); | |
367 | t = mem >> 16; | |
9dd7d179 | 368 | if (t == 0x1f80 || t == 0x9f80 || t == 0xbf80) { |
369 | if ((mem & 0xffff) < 0x400) | |
ef79bbde P |
370 | psxHu32ref(mem) = SWAPu32(value); |
371 | else | |
372 | psxHwWrite32(mem, value); | |
373 | } else { | |
374 | p = (char *)(psxMemWLUT[t]); | |
375 | if (p != NULL) { | |
376 | if (Config.Debug) | |
377 | DebugCheckBP((mem & 0xffffff) | 0x80000000, W4); | |
378 | *(u32 *)(p + (mem & 0xffff)) = SWAPu32(value); | |
379 | #ifdef PSXREC | |
380 | psxCpu->Clear(mem, 1); | |
381 | #endif | |
382 | } else { | |
383 | if (mem != 0xfffe0130) { | |
384 | #ifdef PSXREC | |
385 | if (!writeok) | |
386 | psxCpu->Clear(mem, 1); | |
387 | #endif | |
388 | ||
389 | #ifdef PSXMEM_LOG | |
390 | if (writeok) { PSXMEM_LOG("err sw %8.8lx\n", mem); } | |
391 | #endif | |
392 | } else { | |
393 | int i; | |
394 | ||
395 | switch (value) { | |
396 | case 0x800: case 0x804: | |
397 | if (writeok == 0) break; | |
398 | writeok = 0; | |
399 | memset(psxMemWLUT + 0x0000, 0, 0x80 * sizeof(void *)); | |
400 | memset(psxMemWLUT + 0x8000, 0, 0x80 * sizeof(void *)); | |
401 | memset(psxMemWLUT + 0xa000, 0, 0x80 * sizeof(void *)); | |
402 | break; | |
403 | case 0x00: case 0x1e988: | |
404 | if (writeok == 1) break; | |
405 | writeok = 1; | |
406 | for (i = 0; i < 0x80; i++) psxMemWLUT[i + 0x0000] = (void *)&psxM[(i & 0x1f) << 16]; | |
407 | memcpy(psxMemWLUT + 0x8000, psxMemWLUT, 0x80 * sizeof(void *)); | |
408 | memcpy(psxMemWLUT + 0xa000, psxMemWLUT, 0x80 * sizeof(void *)); | |
409 | break; | |
410 | default: | |
411 | #ifdef PSXMEM_LOG | |
412 | PSXMEM_LOG("unk %8.8lx = %x\n", mem, value); | |
413 | #endif | |
414 | break; | |
415 | } | |
416 | } | |
417 | } | |
418 | } | |
419 | } | |
420 | ||
421 | void *psxMemPointer(u32 mem) { | |
422 | char *p; | |
423 | u32 t; | |
424 | ||
425 | t = mem >> 16; | |
9dd7d179 | 426 | if (t == 0x1f80 || t == 0x9f80 || t == 0xbf80) { |
427 | if ((mem & 0xffff) < 0x400) | |
ef79bbde P |
428 | return (void *)&psxH[mem]; |
429 | else | |
430 | return NULL; | |
431 | } else { | |
432 | p = (char *)(psxMemWLUT[t]); | |
433 | if (p != NULL) { | |
434 | return (void *)(p + (mem & 0xffff)); | |
435 | } | |
436 | return NULL; | |
437 | } | |
438 | } |