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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" | |
5b568098 | 30 | //#include "debug.h" |
31 | #define DebugCheckBP(...) | |
ce0e7ac9 | 32 | |
479d58cf | 33 | #include "lightrec/mem.h" |
ce0e7ac9 | 34 | #include "memmap.h" |
ef79bbde | 35 | |
226a5691 | 36 | #ifdef USE_LIBRETRO_VFS |
37 | #include <streams/file_stream_transforms.h> | |
38 | #endif | |
39 | ||
ef79bbde P |
40 | #ifndef MAP_ANONYMOUS |
41 | #define MAP_ANONYMOUS MAP_ANON | |
42 | #endif | |
43 | ||
08621fe5 PC |
44 | static void * psxMapDefault(unsigned long addr, size_t size, |
45 | int is_fixed, enum psxMapTag tag) | |
46 | { | |
71012b7b | 47 | void *ptr; |
b992f6b7 | 48 | #if !P_HAVE_MMAP |
49 | ptr = calloc(1, size); | |
71012b7b PC |
50 | return ptr ? ptr : MAP_FAILED; |
51 | #else | |
08621fe5 PC |
52 | int flags = MAP_PRIVATE | MAP_ANONYMOUS; |
53 | ||
b992f6b7 | 54 | ptr = mmap((void *)(uintptr_t)addr, size, |
08621fe5 | 55 | PROT_READ | PROT_WRITE, flags, -1, 0); |
b992f6b7 | 56 | #ifdef MADV_HUGEPAGE |
57 | if (size >= 2*1024*1024) { | |
58 | if (ptr != MAP_FAILED && ((uintptr_t)ptr & (2*1024*1024 - 1))) { | |
59 | // try to manually realign assuming bottom-to-top alloc | |
60 | munmap(ptr, size); | |
61 | addr = (uintptr_t)ptr & ~(2*1024*1024 - 1); | |
62 | ptr = mmap((void *)(uintptr_t)addr, size, | |
63 | PROT_READ | PROT_WRITE, flags, -1, 0); | |
64 | } | |
65 | if (ptr != MAP_FAILED) | |
66 | madvise(ptr, size, MADV_HUGEPAGE); | |
67 | } | |
68 | #endif | |
69 | return ptr; | |
71012b7b | 70 | #endif |
08621fe5 PC |
71 | } |
72 | ||
73 | static void psxUnmapDefault(void *ptr, size_t size, enum psxMapTag tag) | |
74 | { | |
94f0c7c5 | 75 | #if !P_HAVE_MMAP |
71012b7b PC |
76 | free(ptr); |
77 | #else | |
08621fe5 | 78 | munmap(ptr, size); |
71012b7b | 79 | #endif |
08621fe5 PC |
80 | } |
81 | ||
87e5b45f | 82 | void *(*psxMapHook)(unsigned long addr, size_t size, int is_fixed, |
08621fe5 PC |
83 | enum psxMapTag tag) = psxMapDefault; |
84 | void (*psxUnmapHook)(void *ptr, size_t size, | |
85 | enum psxMapTag tag) = psxUnmapDefault; | |
87e5b45f | 86 | |
87 | void *psxMap(unsigned long addr, size_t size, int is_fixed, | |
88 | enum psxMapTag tag) | |
89 | { | |
5644b26c | 90 | int try_ = 0; |
b0dd9956 | 91 | unsigned long mask; |
08621fe5 | 92 | void *ret; |
87e5b45f | 93 | |
b0dd9956 | 94 | retry: |
08621fe5 PC |
95 | ret = psxMapHook(addr, size, 0, tag); |
96 | if (ret == NULL) | |
97 | return MAP_FAILED; | |
87e5b45f | 98 | |
2d724e28 | 99 | if (addr != 0 && ret != (void *)(uintptr_t)addr) { |
b0dd9956 | 100 | SysMessage("psxMap: warning: wanted to map @%08x, got %p\n", |
101 | addr, ret); | |
102 | ||
0069615f | 103 | if (is_fixed) { |
104 | psxUnmap(ret, size, tag); | |
b012a437 | 105 | return MAP_FAILED; |
0069615f | 106 | } |
107 | ||
2d724e28 | 108 | if (((addr ^ (unsigned long)(uintptr_t)ret) & ~0xff000000l) && try_ < 2) |
b0dd9956 | 109 | { |
110 | psxUnmap(ret, size, tag); | |
111 | ||
112 | // try to use similarly aligned memory instead | |
113 | // (recompiler needs this) | |
5644b26c | 114 | mask = try_ ? 0xffff : 0xffffff; |
2d724e28 | 115 | addr = ((uintptr_t)ret + mask) & ~mask; |
5644b26c | 116 | try_++; |
b0dd9956 | 117 | goto retry; |
118 | } | |
119 | } | |
87e5b45f | 120 | |
121 | return ret; | |
122 | } | |
123 | ||
124 | void psxUnmap(void *ptr, size_t size, enum psxMapTag tag) | |
125 | { | |
08621fe5 | 126 | psxUnmapHook(ptr, size, tag); |
87e5b45f | 127 | } |
128 | ||
ef79bbde P |
129 | s8 *psxM = NULL; // Kernel & User Memory (2 Meg) |
130 | s8 *psxP = NULL; // Parallel Port (64K) | |
131 | s8 *psxR = NULL; // BIOS ROM (512K) | |
132 | s8 *psxH = NULL; // Scratch Pad (1K) & Hardware Registers (8K) | |
133 | ||
134 | u8 **psxMemWLUT = NULL; | |
135 | u8 **psxMemRLUT = NULL; | |
136 | ||
137 | /* Playstation Memory Map (from Playstation doc by Joshua Walker) | |
138 | 0x0000_0000-0x0000_ffff Kernel (64K) | |
139 | 0x0001_0000-0x001f_ffff User Memory (1.9 Meg) | |
140 | ||
141 | 0x1f00_0000-0x1f00_ffff Parallel Port (64K) | |
142 | ||
143 | 0x1f80_0000-0x1f80_03ff Scratch Pad (1024 bytes) | |
144 | ||
145 | 0x1f80_1000-0x1f80_2fff Hardware Registers (8K) | |
146 | ||
147 | 0x1fc0_0000-0x1fc7_ffff BIOS (512K) | |
148 | ||
149 | 0x8000_0000-0x801f_ffff Kernel and User Memory Mirror (2 Meg) Cached | |
150 | 0x9fc0_0000-0x9fc7_ffff BIOS Mirror (512K) Cached | |
151 | ||
152 | 0xa000_0000-0xa01f_ffff Kernel and User Memory Mirror (2 Meg) Uncached | |
153 | 0xbfc0_0000-0xbfc7_ffff BIOS Mirror (512K) Uncached | |
154 | */ | |
155 | ||
479d58cf PC |
156 | static int psxMemInitMap(void) |
157 | { | |
a62012a7 | 158 | psxM = psxMap(0x80000000, 0x00210000, 1, MAP_TAG_RAM); |
b012a437 | 159 | if (psxM == MAP_FAILED) |
f23d3386 | 160 | psxM = psxMap(0x77000000, 0x00210000, 0, MAP_TAG_RAM); |
b012a437 | 161 | if (psxM == MAP_FAILED) { |
a327ad27 | 162 | SysMessage(_("mapping main RAM failed")); |
5b568098 | 163 | psxM = NULL; |
a327ad27 | 164 | return -1; |
165 | } | |
ef79bbde | 166 | psxP = &psxM[0x200000]; |
5b568098 | 167 | |
a62012a7 | 168 | psxH = psxMap(0x1f800000, 0x10000, 0, MAP_TAG_OTHER); |
5b568098 | 169 | if (psxH == MAP_FAILED) { |
170 | SysMessage(_("Error allocating memory!")); | |
171 | psxMemShutdown(); | |
172 | return -1; | |
173 | } | |
ef79bbde | 174 | |
5b568098 | 175 | psxR = psxMap(0x1fc00000, 0x80000, 0, MAP_TAG_OTHER); |
176 | if (psxR == MAP_FAILED) { | |
ef79bbde | 177 | SysMessage(_("Error allocating memory!")); |
88901dd2 | 178 | psxMemShutdown(); |
ef79bbde P |
179 | return -1; |
180 | } | |
181 | ||
479d58cf PC |
182 | return 0; |
183 | } | |
184 | ||
185 | static void psxMemFreeMap(void) | |
186 | { | |
5b568098 | 187 | if (psxM) psxUnmap(psxM, 0x00210000, MAP_TAG_RAM); |
188 | if (psxH) psxUnmap(psxH, 0x10000, MAP_TAG_OTHER); | |
189 | if (psxR) psxUnmap(psxR, 0x80000, MAP_TAG_OTHER); | |
190 | psxM = psxH = psxR = NULL; | |
191 | psxP = NULL; | |
479d58cf PC |
192 | } |
193 | ||
194 | int psxMemInit(void) | |
195 | { | |
196 | unsigned int i; | |
197 | int ret; | |
198 | ||
640c8536 | 199 | if (LIGHTREC_CUSTOM_MAP) |
479d58cf PC |
200 | ret = lightrec_init_mmap(); |
201 | else | |
202 | ret = psxMemInitMap(); | |
203 | if (ret) { | |
204 | SysMessage(_("Error allocating memory!")); | |
205 | psxMemShutdown(); | |
206 | return -1; | |
207 | } | |
208 | ||
b012a437 PC |
209 | psxMemRLUT = (u8 **)malloc(0x10000 * sizeof(void *)); |
210 | psxMemWLUT = (u8 **)malloc(0x10000 * sizeof(void *)); | |
211 | ||
212 | if (psxMemRLUT == NULL || psxMemWLUT == NULL) { | |
213 | SysMessage(_("Error allocating memory!")); | |
214 | psxMemShutdown(); | |
215 | return -1; | |
216 | } | |
217 | ||
c6b7420b | 218 | memset(psxMemRLUT, (int)(uintptr_t)INVALID_PTR, 0x10000 * sizeof(void *)); |
219 | memset(psxMemWLUT, (int)(uintptr_t)INVALID_PTR, 0x10000 * sizeof(void *)); | |
b012a437 | 220 | |
ef79bbde P |
221 | // MemR |
222 | for (i = 0; i < 0x80; i++) psxMemRLUT[i + 0x0000] = (u8 *)&psxM[(i & 0x1f) << 16]; | |
223 | ||
224 | memcpy(psxMemRLUT + 0x8000, psxMemRLUT, 0x80 * sizeof(void *)); | |
225 | memcpy(psxMemRLUT + 0xa000, psxMemRLUT, 0x80 * sizeof(void *)); | |
226 | ||
227 | psxMemRLUT[0x1f00] = (u8 *)psxP; | |
228 | psxMemRLUT[0x1f80] = (u8 *)psxH; | |
229 | ||
230 | for (i = 0; i < 0x08; i++) psxMemRLUT[i + 0x1fc0] = (u8 *)&psxR[i << 16]; | |
231 | ||
232 | memcpy(psxMemRLUT + 0x9fc0, psxMemRLUT + 0x1fc0, 0x08 * sizeof(void *)); | |
233 | memcpy(psxMemRLUT + 0xbfc0, psxMemRLUT + 0x1fc0, 0x08 * sizeof(void *)); | |
234 | ||
235 | // MemW | |
236 | for (i = 0; i < 0x80; i++) psxMemWLUT[i + 0x0000] = (u8 *)&psxM[(i & 0x1f) << 16]; | |
237 | ||
238 | memcpy(psxMemWLUT + 0x8000, psxMemWLUT, 0x80 * sizeof(void *)); | |
239 | memcpy(psxMemWLUT + 0xa000, psxMemWLUT, 0x80 * sizeof(void *)); | |
240 | ||
6e4e5efb | 241 | // Don't allow writes to PIO Expansion region (psxP) to take effect. |
242 | // NOTE: Not sure if this is needed to fix any games but seems wise, | |
243 | // seeing as some games do read from PIO as part of copy-protection | |
244 | // check. (See fix in psxMemReset() regarding psxP region reads). | |
b012a437 | 245 | psxMemWLUT[0x1f00] = INVALID_PTR; |
ef79bbde P |
246 | psxMemWLUT[0x1f80] = (u8 *)psxH; |
247 | ||
248 | return 0; | |
249 | } | |
250 | ||
251 | void psxMemReset() { | |
252 | FILE *f = NULL; | |
253 | char bios[1024]; | |
254 | ||
255 | memset(psxM, 0, 0x00200000); | |
23643ee7 | 256 | memset(psxP, 0xff, 0x00010000); |
ef79bbde | 257 | |
9361a5aa EC |
258 | Config.HLE = TRUE; |
259 | ||
ef79bbde P |
260 | if (strcmp(Config.Bios, "HLE") != 0) { |
261 | sprintf(bios, "%s/%s", Config.BiosDir, Config.Bios); | |
226a5691 | 262 | f = fopen(bios, "rb"); |
ef79bbde P |
263 | |
264 | if (f == NULL) { | |
265 | SysMessage(_("Could not open BIOS:\"%s\". Enabling HLE Bios!\n"), bios); | |
266 | memset(psxR, 0, 0x80000); | |
ef79bbde | 267 | } else { |
9361a5aa EC |
268 | if (fread(psxR, 1, 0x80000, f) == 0x80000) { |
269 | Config.HLE = FALSE; | |
270 | } else { | |
271 | SysMessage(_("The selected BIOS:\"%s\" is of wrong size. Enabling HLE Bios!\n"), bios); | |
272 | } | |
ef79bbde | 273 | fclose(f); |
ef79bbde | 274 | } |
9361a5aa | 275 | } |
ef79bbde P |
276 | } |
277 | ||
278 | void psxMemShutdown() { | |
640c8536 | 279 | if (LIGHTREC_CUSTOM_MAP) |
479d58cf PC |
280 | lightrec_free_mmap(); |
281 | else | |
282 | psxMemFreeMap(); | |
ef79bbde | 283 | |
88901dd2 | 284 | free(psxMemRLUT); psxMemRLUT = NULL; |
285 | free(psxMemWLUT); psxMemWLUT = NULL; | |
ef79bbde P |
286 | } |
287 | ||
c6b7420b | 288 | void psxMemOnIsolate(int enable) |
289 | { | |
290 | if (enable) { | |
291 | memset(psxMemWLUT + 0x0000, (int)(uintptr_t)INVALID_PTR, 0x80 * sizeof(void *)); | |
292 | memset(psxMemWLUT + 0x8000, (int)(uintptr_t)INVALID_PTR, 0x80 * sizeof(void *)); | |
293 | //memset(psxMemWLUT + 0xa000, (int)(uintptr_t)INVALID_PTR, 0x80 * sizeof(void *)); | |
294 | } else { | |
295 | int i; | |
296 | for (i = 0; i < 0x80; i++) | |
297 | psxMemWLUT[i + 0x0000] = (void *)&psxM[(i & 0x1f) << 16]; | |
298 | memcpy(psxMemWLUT + 0x8000, psxMemWLUT, 0x80 * sizeof(void *)); | |
299 | memcpy(psxMemWLUT + 0xa000, psxMemWLUT, 0x80 * sizeof(void *)); | |
300 | } | |
301 | psxCpu->Notify(enable ? R3000ACPU_NOTIFY_CACHE_ISOLATED | |
302 | : R3000ACPU_NOTIFY_CACHE_UNISOLATED, NULL); | |
303 | } | |
5b568098 | 304 | |
ef79bbde P |
305 | u8 psxMemRead8(u32 mem) { |
306 | char *p; | |
307 | u32 t; | |
308 | ||
309 | t = mem >> 16; | |
9dd7d179 | 310 | if (t == 0x1f80 || t == 0x9f80 || t == 0xbf80) { |
311 | if ((mem & 0xffff) < 0x400) | |
ef79bbde P |
312 | return psxHu8(mem); |
313 | else | |
314 | return psxHwRead8(mem); | |
315 | } else { | |
316 | p = (char *)(psxMemRLUT[t]); | |
b012a437 | 317 | if (p != INVALID_PTR) { |
ef79bbde P |
318 | if (Config.Debug) |
319 | DebugCheckBP((mem & 0xffffff) | 0x80000000, R1); | |
320 | return *(u8 *)(p + (mem & 0xffff)); | |
321 | } else { | |
322 | #ifdef PSXMEM_LOG | |
323 | PSXMEM_LOG("err lb %8.8lx\n", mem); | |
324 | #endif | |
e86be808 | 325 | return 0xFF; |
ef79bbde P |
326 | } |
327 | } | |
328 | } | |
329 | ||
330 | u16 psxMemRead16(u32 mem) { | |
331 | char *p; | |
332 | u32 t; | |
333 | ||
334 | t = mem >> 16; | |
9dd7d179 | 335 | if (t == 0x1f80 || t == 0x9f80 || t == 0xbf80) { |
336 | if ((mem & 0xffff) < 0x400) | |
ef79bbde P |
337 | return psxHu16(mem); |
338 | else | |
339 | return psxHwRead16(mem); | |
340 | } else { | |
341 | p = (char *)(psxMemRLUT[t]); | |
b012a437 | 342 | if (p != INVALID_PTR) { |
ef79bbde P |
343 | if (Config.Debug) |
344 | DebugCheckBP((mem & 0xffffff) | 0x80000000, R2); | |
345 | return SWAPu16(*(u16 *)(p + (mem & 0xffff))); | |
346 | } else { | |
347 | #ifdef PSXMEM_LOG | |
348 | PSXMEM_LOG("err lh %8.8lx\n", mem); | |
349 | #endif | |
e86be808 | 350 | return 0xFFFF; |
ef79bbde P |
351 | } |
352 | } | |
353 | } | |
354 | ||
355 | u32 psxMemRead32(u32 mem) { | |
356 | char *p; | |
357 | u32 t; | |
358 | ||
359 | t = mem >> 16; | |
9dd7d179 | 360 | if (t == 0x1f80 || t == 0x9f80 || t == 0xbf80) { |
361 | if ((mem & 0xffff) < 0x400) | |
ef79bbde P |
362 | return psxHu32(mem); |
363 | else | |
364 | return psxHwRead32(mem); | |
365 | } else { | |
366 | p = (char *)(psxMemRLUT[t]); | |
b012a437 | 367 | if (p != INVALID_PTR) { |
ef79bbde P |
368 | if (Config.Debug) |
369 | DebugCheckBP((mem & 0xffffff) | 0x80000000, R4); | |
370 | return SWAPu32(*(u32 *)(p + (mem & 0xffff))); | |
371 | } else { | |
c6b7420b | 372 | if (mem == 0xfffe0130) |
373 | return psxRegs.biuReg; | |
ef79bbde | 374 | #ifdef PSXMEM_LOG |
c6b7420b | 375 | PSXMEM_LOG("err lw %8.8lx\n", mem); |
ef79bbde | 376 | #endif |
e86be808 | 377 | return 0xFFFFFFFF; |
ef79bbde P |
378 | } |
379 | } | |
380 | } | |
381 | ||
382 | void psxMemWrite8(u32 mem, u8 value) { | |
383 | char *p; | |
384 | u32 t; | |
385 | ||
386 | t = mem >> 16; | |
9dd7d179 | 387 | if (t == 0x1f80 || t == 0x9f80 || t == 0xbf80) { |
388 | if ((mem & 0xffff) < 0x400) | |
ef79bbde P |
389 | psxHu8(mem) = value; |
390 | else | |
391 | psxHwWrite8(mem, value); | |
392 | } else { | |
393 | p = (char *)(psxMemWLUT[t]); | |
b012a437 | 394 | if (p != INVALID_PTR) { |
ef79bbde P |
395 | if (Config.Debug) |
396 | DebugCheckBP((mem & 0xffffff) | 0x80000000, W1); | |
397 | *(u8 *)(p + (mem & 0xffff)) = value; | |
630b122b | 398 | #ifndef DRC_DISABLE |
ef79bbde P |
399 | psxCpu->Clear((mem & (~3)), 1); |
400 | #endif | |
401 | } else { | |
402 | #ifdef PSXMEM_LOG | |
403 | PSXMEM_LOG("err sb %8.8lx\n", mem); | |
404 | #endif | |
405 | } | |
406 | } | |
407 | } | |
408 | ||
409 | void psxMemWrite16(u32 mem, u16 value) { | |
410 | char *p; | |
411 | u32 t; | |
412 | ||
413 | t = mem >> 16; | |
9dd7d179 | 414 | if (t == 0x1f80 || t == 0x9f80 || t == 0xbf80) { |
415 | if ((mem & 0xffff) < 0x400) | |
ef79bbde P |
416 | psxHu16ref(mem) = SWAPu16(value); |
417 | else | |
418 | psxHwWrite16(mem, value); | |
419 | } else { | |
420 | p = (char *)(psxMemWLUT[t]); | |
b012a437 | 421 | if (p != INVALID_PTR) { |
ef79bbde P |
422 | if (Config.Debug) |
423 | DebugCheckBP((mem & 0xffffff) | 0x80000000, W2); | |
424 | *(u16 *)(p + (mem & 0xffff)) = SWAPu16(value); | |
630b122b | 425 | #ifndef DRC_DISABLE |
3e31e934 | 426 | psxCpu->Clear((mem & (~3)), 1); |
ef79bbde P |
427 | #endif |
428 | } else { | |
429 | #ifdef PSXMEM_LOG | |
430 | PSXMEM_LOG("err sh %8.8lx\n", mem); | |
431 | #endif | |
432 | } | |
433 | } | |
434 | } | |
435 | ||
436 | void psxMemWrite32(u32 mem, u32 value) { | |
437 | char *p; | |
438 | u32 t; | |
630b122b | 439 | |
ef79bbde P |
440 | // if ((mem&0x1fffff) == 0x71E18 || value == 0x48088800) SysPrintf("t2fix!!\n"); |
441 | t = mem >> 16; | |
9dd7d179 | 442 | if (t == 0x1f80 || t == 0x9f80 || t == 0xbf80) { |
630b122b | 443 | if ((mem & 0xffff) < 0x400) |
ef79bbde P |
444 | psxHu32ref(mem) = SWAPu32(value); |
445 | else | |
446 | psxHwWrite32(mem, value); | |
447 | } else { | |
448 | p = (char *)(psxMemWLUT[t]); | |
b012a437 | 449 | if (p != INVALID_PTR) { |
ef79bbde P |
450 | if (Config.Debug) |
451 | DebugCheckBP((mem & 0xffffff) | 0x80000000, W4); | |
452 | *(u32 *)(p + (mem & 0xffff)) = SWAPu32(value); | |
630b122b | 453 | #ifndef DRC_DISABLE |
ef79bbde P |
454 | psxCpu->Clear(mem, 1); |
455 | #endif | |
456 | } else { | |
c6b7420b | 457 | if (mem == 0xfffe0130) { |
458 | psxRegs.biuReg = value; | |
459 | return; | |
460 | } | |
ef79bbde | 461 | #ifdef PSXMEM_LOG |
c6b7420b | 462 | PSXMEM_LOG("err sw %8.8lx\n", mem); |
ef79bbde | 463 | #endif |
ef79bbde P |
464 | } |
465 | } | |
466 | } | |
467 | ||
468 | void *psxMemPointer(u32 mem) { | |
469 | char *p; | |
470 | u32 t; | |
471 | ||
472 | t = mem >> 16; | |
9dd7d179 | 473 | if (t == 0x1f80 || t == 0x9f80 || t == 0xbf80) { |
474 | if ((mem & 0xffff) < 0x400) | |
ef79bbde P |
475 | return (void *)&psxH[mem]; |
476 | else | |
477 | return NULL; | |
478 | } else { | |
479 | p = (char *)(psxMemWLUT[t]); | |
b012a437 | 480 | if (p != INVALID_PTR) { |
ef79bbde P |
481 | return (void *)(p + (mem & 0xffff)); |
482 | } | |
483 | return NULL; | |
484 | } | |
485 | } |