libpcsxcore/psxbios.c

   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  * Internal simulated HLE BIOS.
  22  */
  23
  24 // TODO: implement all system calls, count the exact CPU cycles of system calls.
  25
  26 #include "psxbios.h"
  27 #include "psxhw.h"
  28 #include "gpu.h"
  29 #include <zlib.h>
  30
  31 #undef SysPrintf
  32 #define SysPrintf if (Config.PsxOut) printf
  33
  34 char *biosA0n[256] = {
  35 // 0x00
  36         "open",         "lseek",        "read",         "write",
  37         "close",        "ioctl",        "exit",         "sys_a0_07",
  38         "getc",         "putc",         "todigit",      "atof",
  39         "strtoul",      "strtol",       "abs",          "labs",
  40 // 0x10
  41         "atoi",         "atol",         "atob",         "setjmp",
  42         "longjmp",      "strcat",       "strncat",      "strcmp",
  43         "strncmp",      "strcpy",       "strncpy",      "strlen",
  44         "index",        "rindex",       "strchr",       "strrchr",
  45 // 0x20
  46         "strpbrk",      "strspn",       "strcspn",      "strtok",
  47         "strstr",       "toupper",      "tolower",      "bcopy",
  48         "bzero",        "bcmp",         "memcpy",       "memset",
  49         "memmove",      "memcmp",       "memchr",       "rand",
  50 // 0x30
  51         "srand",        "qsort",        "strtod",       "malloc",
  52         "free",         "lsearch",      "bsearch",      "calloc",
  53         "realloc",      "InitHeap",     "_exit",        "getchar",
  54         "putchar",      "gets",         "puts",         "printf",
  55 // 0x40
  56         "sys_a0_40",            "LoadTest",                                     "Load",         "Exec",
  57         "FlushCache",           "InstallInterruptHandler",      "GPU_dw",       "mem2vram",
  58         "SendGPUStatus",        "GPU_cw",                                       "GPU_cwb",      "SendPackets",
  59         "sys_a0_4c",            "GetGPUStatus",                         "GPU_sync",     "sys_a0_4f",
  60 // 0x50
  61         "sys_a0_50",            "LoadExec",                             "GetSysSp",             "sys_a0_53",
  62         "_96_init()",           "_bu_init()",                   "_96_remove()", "sys_a0_57",
  63         "sys_a0_58",            "sys_a0_59",                    "sys_a0_5a",    "dev_tty_init",
  64         "dev_tty_open",         "sys_a0_5d",                    "dev_tty_ioctl","dev_cd_open",
  65 // 0x60
  66         "dev_cd_read",          "dev_cd_close",                 "dev_cd_firstfile",     "dev_cd_nextfile",
  67         "dev_cd_chdir",         "dev_card_open",                "dev_card_read",        "dev_card_write",
  68         "dev_card_close",       "dev_card_firstfile",   "dev_card_nextfile","dev_card_erase",
  69         "dev_card_undelete","dev_card_format",          "dev_card_rename",      "dev_card_6f",
  70 // 0x70
  71         "_bu_init",                     "_96_init",             "_96_remove",           "sys_a0_73",
  72         "sys_a0_74",            "sys_a0_75",    "sys_a0_76",            "sys_a0_77",
  73         "_96_CdSeekL",          "sys_a0_79",    "sys_a0_7a",            "sys_a0_7b",
  74         "_96_CdGetStatus",      "sys_a0_7d",    "_96_CdRead",           "sys_a0_7f",
  75 // 0x80
  76         "sys_a0_80",            "sys_a0_81",    "sys_a0_82",            "sys_a0_83",
  77         "sys_a0_84",            "_96_CdStop",   "sys_a0_86",            "sys_a0_87",
  78         "sys_a0_88",            "sys_a0_89",    "sys_a0_8a",            "sys_a0_8b",
  79         "sys_a0_8c",            "sys_a0_8d",    "sys_a0_8e",            "sys_a0_8f",
  80 // 0x90
  81         "sys_a0_90",            "sys_a0_91",    "sys_a0_92",            "sys_a0_93",
  82         "sys_a0_94",            "sys_a0_95",    "AddCDROMDevice",       "AddMemCardDevide",
  83         "DisableKernelIORedirection",           "EnableKernelIORedirection", "sys_a0_9a", "sys_a0_9b",
  84         "SetConf",                      "GetConf",              "sys_a0_9e",            "SetMem",
  85 // 0xa0
  86         "_boot",                        "SystemError",  "EnqueueCdIntr",        "DequeueCdIntr",
  87         "sys_a0_a4",            "ReadSector",   "get_cd_status",        "bufs_cb_0",
  88         "bufs_cb_1",            "bufs_cb_2",    "bufs_cb_3",            "_card_info",
  89         "_card_load",           "_card_auto",   "bufs_cd_4",            "sys_a0_af",
  90 // 0xb0
  91         "sys_a0_b0",            "sys_a0_b1",    "do_a_long_jmp",        "sys_a0_b3",
  92         "?? sub_function",
  93 };
  94
  95 char *biosB0n[256] = {
  96 // 0x00
  97         "SysMalloc",            "sys_b0_01",    "sys_b0_02",    "sys_b0_03",
  98         "sys_b0_04",            "sys_b0_05",    "sys_b0_06",    "DeliverEvent",
  99         "OpenEvent",            "CloseEvent",   "WaitEvent",    "TestEvent",
 100         "EnableEvent",          "DisableEvent", "OpenTh",               "CloseTh",
 101 // 0x10
 102         "ChangeTh",                     "sys_b0_11",    "InitPAD",              "StartPAD",
 103         "StopPAD",                      "PAD_init",             "PAD_dr",               "ReturnFromExecption",
 104         "ResetEntryInt",        "HookEntryInt", "sys_b0_1a",    "sys_b0_1b",
 105         "sys_b0_1c",            "sys_b0_1d",    "sys_b0_1e",    "sys_b0_1f",
 106 // 0x20
 107         "UnDeliverEvent",       "sys_b0_21",    "sys_b0_22",    "sys_b0_23",
 108         "sys_b0_24",            "sys_b0_25",    "sys_b0_26",    "sys_b0_27",
 109         "sys_b0_28",            "sys_b0_29",    "sys_b0_2a",    "sys_b0_2b",
 110         "sys_b0_2c",            "sys_b0_2d",    "sys_b0_2e",    "sys_b0_2f",
 111 // 0x30
 112         "sys_b0_30",            "sys_b0_31",    "open",                 "lseek",
 113         "read",                         "write",                "close",                "ioctl",
 114         "exit",                         "sys_b0_39",    "getc",                 "putc",
 115         "getchar",                      "putchar",              "gets",                 "puts",
 116 // 0x40
 117         "cd",                           "format",               "firstfile",    "nextfile",
 118         "rename",                       "delete",               "undelete",             "AddDevice",
 119         "RemoteDevice",         "PrintInstalledDevices", "InitCARD", "StartCARD",
 120         "StopCARD",                     "sys_b0_4d",    "_card_write",  "_card_read",
 121 // 0x50
 122         "_new_card",            "Krom2RawAdd",  "sys_b0_52",    "sys_b0_53",
 123         "_get_errno",           "_get_error",   "GetC0Table",   "GetB0Table",
 124         "_card_chan",           "sys_b0_59",    "sys_b0_5a",    "ChangeClearPAD",
 125         "_card_status",         "_card_wait",
 126 };
 127
 128 char *biosC0n[256] = {
 129 // 0x00
 130         "InitRCnt",                       "InitException",              "SysEnqIntRP",          "SysDeqIntRP",
 131         "get_free_EvCB_slot", "get_free_TCB_slot",      "ExceptionHandler",     "InstallExeptionHandler",
 132         "SysInitMemory",          "SysInitKMem",                "ChangeClearRCnt",      "SystemError",
 133         "InitDefInt",             "sys_c0_0d",                  "sys_c0_0e",            "sys_c0_0f",
 134 // 0x10
 135         "sys_c0_10",              "sys_c0_11",                  "InstallDevices",       "FlushStfInOutPut",
 136         "sys_c0_14",              "_cdevinput",                 "_cdevscan",            "_circgetc",
 137         "_circputc",              "ioabort",                    "sys_c0_1a",            "KernelRedirect",
 138         "PatchAOTable",
 139 };
 140
 141 //#define r0 (psxRegs.GPR.n.r0)
 142 #define at (psxRegs.GPR.n.at)
 143 #define v0 (psxRegs.GPR.n.v0)
 144 #define v1 (psxRegs.GPR.n.v1)
 145 #define a0 (psxRegs.GPR.n.a0)
 146 #define a1 (psxRegs.GPR.n.a1)
 147 #define a2 (psxRegs.GPR.n.a2)
 148 #define a3 (psxRegs.GPR.n.a3)
 149 #define t0 (psxRegs.GPR.n.t0)
 150 #define t1 (psxRegs.GPR.n.t1)
 151 #define t2 (psxRegs.GPR.n.t2)
 152 #define t3 (psxRegs.GPR.n.t3)
 153 #define t4 (psxRegs.GPR.n.t4)
 154 #define t5 (psxRegs.GPR.n.t5)
 155 #define t6 (psxRegs.GPR.n.t6)
 156 #define t7 (psxRegs.GPR.n.t7)
 157 #define t8 (psxRegs.GPR.n.t8)
 158 #define t9 (psxRegs.GPR.n.t9)
 159 #define s0 (psxRegs.GPR.n.s0)
 160 #define s1 (psxRegs.GPR.n.s1)
 161 #define s2 (psxRegs.GPR.n.s2)
 162 #define s3 (psxRegs.GPR.n.s3)
 163 #define s4 (psxRegs.GPR.n.s4)
 164 #define s5 (psxRegs.GPR.n.s5)
 165 #define s6 (psxRegs.GPR.n.s6)
 166 #define s7 (psxRegs.GPR.n.s7)
 167 #define k0 (psxRegs.GPR.n.k0)
 168 #define k1 (psxRegs.GPR.n.k1)
 169 #define gp (psxRegs.GPR.n.gp)
 170 #define sp (psxRegs.GPR.n.sp)
 171 #define fp (psxRegs.GPR.n.s8)
 172 #define ra (psxRegs.GPR.n.ra)
 173 #define pc0 (psxRegs.pc)
 174
 175 #define Ra0 ((char *)PSXM(a0))
 176 #define Ra1 ((char *)PSXM(a1))
 177 #define Ra2 ((char *)PSXM(a2))
 178 #define Ra3 ((char *)PSXM(a3))
 179 #define Rv0 ((char *)PSXM(v0))
 180 #define Rsp ((char *)PSXM(sp))
 181
 182 typedef struct {
 183         u32 desc;
 184         s32 status;
 185         s32 mode;
 186         u32 fhandler;
 187 } EvCB[32];
 188
 189 #define EvStUNUSED      0x0000
 190 #define EvStWAIT        0x1000
 191 #define EvStACTIVE      0x2000
 192 #define EvStALREADY 0x4000
 193
 194 #define EvMdINTR        0x1000
 195 #define EvMdNOINTR      0x2000
 196
 197 /*
 198 typedef struct {
 199         s32 next;
 200         s32 func1;
 201         s32 func2;
 202         s32 pad;
 203 } SysRPst;
 204 */
 205
 206 typedef struct {
 207         s32 status;
 208         s32 mode;
 209         u32 reg[32];
 210         u32 func;
 211 } TCB;
 212
 213 typedef struct {
 214         u32 _pc0;
 215         u32 gp0;
 216         u32 t_addr;
 217         u32 t_size;
 218         u32 d_addr;
 219         u32 d_size;
 220         u32 b_addr;
 221         u32 b_size;
 222         u32 S_addr;
 223         u32 s_size;
 224         u32 _sp, _fp, _gp, ret, base;
 225 } EXEC;
 226
 227 struct DIRENTRY {
 228         char name[20];
 229         s32 attr;
 230         s32 size;
 231         u32 next;
 232         s32 head;
 233         char system[4];
 234 };
 235
 236 typedef struct {
 237         char name[32];
 238         u32  mode;
 239         u32  offset;
 240         u32  size;
 241         u32  mcfile;
 242 } FileDesc;
 243
 244 static u32 *jmp_int = NULL;
 245 static int *pad_buf = NULL;
 246 static char *pad_buf1 = NULL, *pad_buf2 = NULL;
 247 static int pad_buf1len, pad_buf2len;
 248
 249 static u32 regs[35];
 250 static EvCB *Event;
 251 static EvCB *HwEV; // 0xf0
 252 static EvCB *EvEV; // 0xf1
 253 static EvCB *RcEV; // 0xf2
 254 static EvCB *UeEV; // 0xf3
 255 static EvCB *SwEV; // 0xf4
 256 static EvCB *ThEV; // 0xff
 257 static u32 *heap_addr = NULL;
 258 static u32 *heap_end = NULL;
 259 static u32 SysIntRP[8];
 260 static int CardState = -1;
 261 static TCB Thread[8];
 262 static int CurThread = 0;
 263 static FileDesc FDesc[32];
 264 static u32 card_active_chan;
 265
 266 boolean hleSoftCall = FALSE;
 267
 268 static inline void softCall(u32 pc) {
 269         pc0 = pc;
 270         ra = 0x80001000;
 271
 272         hleSoftCall = TRUE;
 273
 274         while (pc0 != 0x80001000) psxCpu->ExecuteBlock();
 275
 276         hleSoftCall = FALSE;
 277 }
 278
 279 static inline void softCall2(u32 pc) {
 280         u32 sra = ra;
 281         pc0 = pc;
 282         ra = 0x80001000;
 283
 284         hleSoftCall = TRUE;
 285
 286         while (pc0 != 0x80001000) psxCpu->ExecuteBlock();
 287         ra = sra;
 288
 289         hleSoftCall = FALSE;
 290 }
 291
 292 static inline void DeliverEvent(u32 ev, u32 spec) {
 293         if (Event[ev][spec].status != EvStACTIVE) return;
 294
 295 //      Event[ev][spec].status = EvStALREADY;
 296         if (Event[ev][spec].mode == EvMdINTR) {
 297                 softCall2(Event[ev][spec].fhandler);
 298         } else Event[ev][spec].status = EvStALREADY;
 299 }
 300
 301 static inline void SaveRegs() {
 302         memcpy(regs, psxRegs.GPR.r, 32*4);
 303         regs[32] = psxRegs.GPR.n.lo;
 304         regs[33] = psxRegs.GPR.n.hi;
 305         regs[34] = psxRegs.pc;
 306 }
 307
 308 static inline void LoadRegs() {
 309         memcpy(psxRegs.GPR.r, regs, 32*4);
 310         psxRegs.GPR.n.lo = regs[32];
 311         psxRegs.GPR.n.hi = regs[33];
 312 }
 313
 314 /*                                           *
 315 //                                           *
 316 //                                           *
 317 //               System calls A0             */
 318
 319
 320 #define buread(Ra1, mcd, length) { \
 321         SysPrintf("read %d: %x,%x (%s)\n", FDesc[1 + mcd].mcfile, FDesc[1 + mcd].offset, a2, Mcd##mcd##Data + 128 * FDesc[1 + mcd].mcfile + 0xa); \
 322         ptr = Mcd##mcd##Data + 8192 * FDesc[1 + mcd].mcfile + FDesc[1 + mcd].offset; \
 323         memcpy(Ra1, ptr, length); \
 324         DeliverEvent(0x11, 0x2); /* 0xf0000011, 0x0004 */ \
 325         DeliverEvent(0x81, 0x2); /* 0xf4000001, 0x0004 */ \
 326         if (FDesc[1 + mcd].mode & 0x8000) v0 = 0; \
 327         else v0 = length; \
 328         FDesc[1 + mcd].offset += v0; \
 329 }
 330
 331 #define buwrite(Ra1, mcd, length) { \
 332         u32 offset =  + 8192 * FDesc[1 + mcd].mcfile + FDesc[1 + mcd].offset; \
 333         SysPrintf("write %d: %x,%x\n", FDesc[1 + mcd].mcfile, FDesc[1 + mcd].offset, a2); \
 334         ptr = Mcd##mcd##Data + offset; \
 335         memcpy(ptr, Ra1, length); \
 336         DeliverEvent(0x11, 0x2); /* 0xf0000011, 0x0004 */ \
 337         DeliverEvent(0x81, 0x2); /* 0xf4000001, 0x0004 */ \
 338         FDesc[1 + mcd].offset += length; \
 339         if (FDesc[1 + mcd].mode & 0x8000) v0 = 0; \
 340         else v0 = length; \
 341 }
 342
 343
 344 /* Internally redirects to "FileRead(fd,tempbuf,1)".*/
 345 /* For some strange reason, the returned character is sign-expanded; */
 346 /* So if a return value of FFFFFFFFh could mean either character FFh, or error. */
 347 /* TODO FIX ME : Properly implement this behaviour */
 348 void psxBios_getc(void) // 0x03, 0x35
 349 {
 350         char *ptr;
 351         void *pa1 = Ra1;
 352 #ifdef PSXBIOS_LOG
 353         PSXBIOS_LOG("psxBios_%s\n", biosA0n[0x03]);
 354 #endif
 355         v0 = -1;
 356
 357         if (pa1) {
 358                 switch (a0) {
 359                         case 2: buread(pa1, 1, 1); break;
 360                         case 3: buread(pa1, 2, 1); break;
 361                 }
 362         }
 363
 364         pc0 = ra;
 365 }
 366
 367 /* Copy of psxBios_write, except size is 1. */
 368 void psxBios_putc(void) // 0x09, 0x3B
 369 {
 370         char *ptr;
 371         void *pa1 = Ra1;
 372 #ifdef PSXBIOS_LOG
 373         PSXBIOS_LOG("psxBios_%s\n", biosA0n[0x09]);
 374 #endif
 375         v0 = -1;
 376         if (!pa1) {
 377                 pc0 = ra;
 378                 return;
 379         }
 380
 381         if (a0 == 1) { // stdout
 382                 char *ptr = (char *)pa1;
 383
 384                 v0 = a2;
 385                 while (a2 > 0) {
 386                         printf("%c", *ptr++); a2--;
 387                 }
 388                 pc0 = ra; return;
 389         }
 390
 391         switch (a0) {
 392                 case 2: buwrite(pa1, 1, 1); break;
 393                 case 3: buwrite(pa1, 2, 1); break;
 394         }
 395
 396         pc0 = ra;
 397 }
 398
 399 void psxBios_todigit(void) // 0x0a
 400 {
 401         int c = a0;
 402 #ifdef PSXBIOS_LOG
 403         PSXBIOS_LOG("psxBios_%s\n", biosA0n[0x0a]);
 404 #endif
 405         c &= 0xFF;
 406         if (c >= 0x30 && c < 0x3A) {
 407                 c -= 0x30;
 408         }
 409         else if (c > 0x60 && c < 0x7B) {
 410                 c -= 0x20;
 411         }
 412         else if (c > 0x40 && c < 0x5B) {
 413                 c = c - 0x41 + 10;
 414         }
 415         else if (c >= 0x80) {
 416                 c = -1;
 417         }
 418         else
 419         {
 420                 c = 0x0098967F;
 421         }
 422         v0 = c;
 423         pc0 = ra;
 424 }
 425
 426 void psxBios_abs() { // 0x0e
 427         if ((s32)a0 < 0) v0 = -(s32)a0;
 428         else v0 = a0;
 429         pc0 = ra;
 430 }
 431
 432 void psxBios_labs() { // 0x0f
 433         psxBios_abs();
 434 }
 435
 436 void psxBios_atoi() { // 0x10
 437         s32 n = 0, f = 0;
 438         char *p = (char *)Ra0;
 439
 440         for (;;p++) {
 441                 switch (*p) {
 442                         case ' ': case '\t': continue;
 443                         case '-': f++;
 444                         case '+': p++;
 445                 }
 446                 break;
 447         }
 448
 449         while (*p >= '0' && *p <= '9') {
 450                 n = n * 10 + *p++ - '0';
 451         }
 452
 453         v0 = (f ? -n : n);
 454         pc0 = ra;
 455 }
 456
 457 void psxBios_atol() { // 0x11
 458         psxBios_atoi();
 459 }
 460
 461 void psxBios_setjmp() { // 0x13
 462         u32 *jmp_buf = (u32 *)Ra0;
 463         int i;
 464
 465 #ifdef PSXBIOS_LOG
 466         PSXBIOS_LOG("psxBios_%s\n", biosA0n[0x13]);
 467 #endif
 468
 469         jmp_buf[0] = ra;
 470         jmp_buf[1] = sp;
 471         jmp_buf[2] = fp;
 472         for (i = 0; i < 8; i++) // s0-s7
 473                 jmp_buf[3 + i] = psxRegs.GPR.r[16 + i];
 474         jmp_buf[11] = gp;
 475
 476         v0 = 0; pc0 = ra;
 477 }
 478
 479 void psxBios_longjmp() { // 0x14
 480         u32 *jmp_buf = (u32 *)Ra0;
 481         int i;
 482
 483 #ifdef PSXBIOS_LOG
 484         PSXBIOS_LOG("psxBios_%s\n", biosA0n[0x14]);
 485 #endif
 486
 487         ra = jmp_buf[0]; /* ra */
 488         sp = jmp_buf[1]; /* sp */
 489         fp = jmp_buf[2]; /* fp */
 490         for (i = 0; i < 8; i++) // s0-s7
 491                 psxRegs.GPR.r[16 + i] = jmp_buf[3 + i];
 492         gp = jmp_buf[11]; /* gp */
 493
 494         v0 = a1; pc0 = ra;
 495 }
 496
 497 void psxBios_strcat() { // 0x15
 498         char *p1 = (char *)Ra0, *p2 = (char *)Ra1;
 499
 500 #ifdef PSXBIOS_LOG
 501         PSXBIOS_LOG("psxBios_%s: %s, %s\n", biosA0n[0x15], Ra0, Ra1);
 502 #endif
 503         if (a0 == 0 || a1 == 0)
 504         {
 505                 v0 = 0;
 506                 pc0 = ra;
 507                 return;
 508         }
 509         while (*p1++);
 510         --p1;
 511         while ((*p1++ = *p2++) != '\0');
 512
 513         v0 = a0; pc0 = ra;
 514 }
 515
 516 void psxBios_strncat() { // 0x16
 517         char *p1 = (char *)Ra0, *p2 = (char *)Ra1;
 518         s32 n = a2;
 519
 520 #ifdef PSXBIOS_LOG
 521         PSXBIOS_LOG("psxBios_%s: %s (%x), %s (%x), %d\n", biosA0n[0x16], Ra0, a0, Ra1, a1, a2);
 522 #endif
 523         if (a0 == 0 || a1 == 0)
 524         {
 525                 v0 = 0;
 526                 pc0 = ra;
 527                 return;
 528         }
 529         while (*p1++);
 530         --p1;
 531         while ((*p1++ = *p2++) != '\0') {
 532                 if (--n < 0) {
 533                         *--p1 = '\0';
 534                         break;
 535                 }
 536         }
 537
 538         v0 = a0; pc0 = ra;
 539 }
 540
 541 void psxBios_strcmp() { // 0x17
 542         char *p1 = (char *)Ra0, *p2 = (char *)Ra1;
 543
 544 #ifdef PSXBIOS_LOG
 545         PSXBIOS_LOG("psxBios_%s: %s (%x), %s (%x)\n", biosA0n[0x17], Ra0, a0, Ra1, a1);
 546 #endif
 547
 548         while (*p1 == *p2++) {
 549                 if (*p1++ == '\0') {
 550                         v0 = 0;
 551                         pc0 = ra;
 552                         return;
 553                 }
 554         }
 555
 556         v0 = (*p1 - *--p2);
 557         pc0 = ra;
 558 }
 559
 560 void psxBios_strncmp() { // 0x18
 561         char *p1 = (char *)Ra0, *p2 = (char *)Ra1;
 562         s32 n = a2;
 563
 564 #ifdef PSXBIOS_LOG
 565         PSXBIOS_LOG("psxBios_%s: %s (%x), %s (%x), %d\n", biosA0n[0x18], Ra0, a0, Ra1, a1, a2);
 566 #endif
 567
 568         while (--n >= 0 && *p1 == *p2++) {
 569                 if (*p1++ == '\0') {
 570                         v0 = 0;
 571                         pc0 = ra;
 572                         return;
 573                 }
 574         }
 575
 576         v0 = (n < 0 ? 0 : *p1 - *--p2);
 577         pc0 = ra;
 578 }
 579
 580 void psxBios_strcpy() { // 0x19
 581         char *p1 = (char *)Ra0, *p2 = (char *)Ra1;
 582         while ((*p1++ = *p2++) != '\0');
 583
 584         v0 = a0; pc0 = ra;
 585 }
 586
 587 void psxBios_strncpy() { // 0x1a
 588         char *p1 = (char *)Ra0, *p2 = (char *)Ra1;
 589         s32 n = a2, i;
 590
 591         for (i = 0; i < n; i++) {
 592                 if ((*p1++ = *p2++) == '\0') {
 593                         while (++i < n) {
 594                                 *p1++ = '\0';
 595                         }
 596                         v0 = a0; pc0 = ra;
 597                         return;
 598                 }
 599         }
 600
 601         v0 = a0; pc0 = ra;
 602 }
 603
 604 void psxBios_strlen() { // 0x1b
 605         char *p = (char *)Ra0;
 606         v0 = 0;
 607         while (*p++) v0++;
 608         pc0 = ra;
 609 }
 610
 611 void psxBios_index() { // 0x1c
 612         char *p = (char *)Ra0;
 613
 614         do {
 615                 if (*p == a1) {
 616                         v0 = a0 + (p - (char *)Ra0);
 617                         pc0 = ra;
 618                         return;
 619                 }
 620         } while (*p++ != '\0');
 621
 622         v0 = 0; pc0 = ra;
 623 }
 624
 625 void psxBios_rindex() { // 0x1d
 626         char *p = (char *)Ra0;
 627
 628         v0 = 0;
 629
 630         do {
 631                 if (*p == a1)
 632                         v0 = a0 + (p - (char *)Ra0);
 633         } while (*p++ != '\0');
 634
 635         pc0 = ra;
 636 }
 637
 638 void psxBios_strchr() { // 0x1e
 639         psxBios_index();
 640 }
 641
 642 void psxBios_strrchr() { // 0x1f
 643         psxBios_rindex();
 644 }
 645
 646 void psxBios_strpbrk() { // 0x20
 647         char *p1 = (char *)Ra0, *p2 = (char *)Ra1, *scanp, c, sc;
 648
 649         while ((c = *p1++) != '\0') {
 650                 for (scanp = p2; (sc = *scanp++) != '\0';) {
 651                         if (sc == c) {
 652                                 v0 = a0 + (p1 - 1 - (char *)Ra0);
 653                                 pc0 = ra;
 654                                 return;
 655                         }
 656                 }
 657         }
 658
 659         // BUG: return a0 instead of NULL if not found
 660         v0 = a0; pc0 = ra;
 661 }
 662
 663 void psxBios_strspn() { // 0x21
 664         char *p1, *p2;
 665
 666         for (p1 = (char *)Ra0; *p1 != '\0'; p1++) {
 667                 for (p2 = (char *)Ra1; *p2 != '\0' && *p2 != *p1; p2++);
 668                 if (*p2 == '\0') break;
 669         }
 670
 671         v0 = p1 - (char *)Ra0; pc0 = ra;
 672 }
 673
 674 void psxBios_strcspn() { // 0x22
 675         char *p1, *p2;
 676
 677         for (p1 = (char *)Ra0; *p1 != '\0'; p1++) {
 678                 for (p2 = (char *)Ra1; *p2 != '\0' && *p2 != *p1; p2++);
 679                 if (*p2 != '\0') break;
 680         }
 681
 682         v0 = p1 - (char *)Ra0; pc0 = ra;
 683 }
 684
 685 void psxBios_strtok() { // 0x23
 686         char *pcA0 = (char *)Ra0;
 687         char *pcRet = strtok(pcA0, (char *)Ra1);
 688         if (pcRet)
 689                 v0 = a0 + pcRet - pcA0;
 690         else
 691                 v0 = 0;
 692         pc0 = ra;
 693 }
 694
 695 void psxBios_strstr() { // 0x24
 696         char *p = (char *)Ra0, *p1, *p2;
 697
 698         while (*p != '\0') {
 699                 p1 = p;
 700                 p2 = (char *)Ra1;
 701
 702                 while (*p1 != '\0' && *p2 != '\0' && *p1 == *p2) {
 703                         p1++; p2++;
 704                 }
 705
 706                 if (*p2 == '\0') {
 707                         v0 = a0 + (p - (char *)Ra0);
 708                         pc0 = ra;
 709                         return;
 710                 }
 711
 712                 p++;
 713         }
 714
 715         v0 = 0; pc0 = ra;
 716 }
 717
 718 void psxBios_toupper() { // 0x25
 719         v0 = (s8)(a0 & 0xff);
 720         if (v0 >= 'a' && v0 <= 'z') v0 -= 'a' - 'A';
 721         pc0 = ra;
 722 }
 723
 724 void psxBios_tolower() { // 0x26
 725         v0 = (s8)(a0 & 0xff);
 726         if (v0 >= 'A' && v0 <= 'Z') v0 += 'a' - 'A';
 727         pc0 = ra;
 728 }
 729
 730 void psxBios_bcopy() { // 0x27
 731         char *p1 = (char *)Ra1, *p2 = (char *)Ra0;
 732         while ((s32)a2-- > 0) *p1++ = *p2++;
 733
 734         pc0 = ra;
 735 }
 736
 737 void psxBios_bzero() { // 0x28
 738         char *p = (char *)Ra0;
 739         while ((s32)a1-- > 0) *p++ = '\0';
 740
 741         pc0 = ra;
 742 }
 743
 744 void psxBios_bcmp() { // 0x29
 745         char *p1 = (char *)Ra0, *p2 = (char *)Ra1;
 746
 747         if (a0 == 0 || a1 == 0) { v0 = 0; pc0 = ra; return; }
 748
 749         while ((s32)a2-- > 0) {
 750                 if (*p1++ != *p2++) {
 751                         v0 = *p1 - *p2; // BUG: compare the NEXT byte
 752                         pc0 = ra;
 753                         return;
 754                 }
 755         }
 756
 757         v0 = 0; pc0 = ra;
 758 }
 759
 760 void psxBios_memcpy() { // 0x2a
 761         char *p1 = (char *)Ra0, *p2 = (char *)Ra1;
 762         while ((s32)a2-- > 0) *p1++ = *p2++;
 763
 764         v0 = a0; pc0 = ra;
 765 }
 766
 767 void psxBios_memset() { // 0x2b
 768         char *p = (char *)Ra0;
 769         while ((s32)a2-- > 0) *p++ = (char)a1;
 770
 771         a2 = 0;
 772         v0 = a0; pc0 = ra;
 773 }
 774
 775 void psxBios_memmove() { // 0x2c
 776         char *p1 = (char *)Ra0, *p2 = (char *)Ra1;
 777
 778         if (p2 <= p1 && p2 + a2 > p1) {
 779                 a2++; // BUG: copy one more byte here
 780                 p1 += a2;
 781                 p2 += a2;
 782                 while ((s32)a2-- > 0) *--p1 = *--p2;
 783         } else {
 784                 while ((s32)a2-- > 0) *p1++ = *p2++;
 785         }
 786
 787         v0 = a0; pc0 = ra;
 788 }
 789
 790 void psxBios_memcmp() { // 0x2d
 791         psxBios_bcmp();
 792 }
 793
 794 void psxBios_memchr() { // 0x2e
 795         char *p = (char *)Ra0;
 796
 797         while ((s32)a2-- > 0) {
 798                 if (*p++ != (s8)a1) continue;
 799                 v0 = a0 + (p - (char *)Ra0 - 1);
 800                 pc0 = ra;
 801                 return;
 802         }
 803
 804         v0 = 0; pc0 = ra;
 805 }
 806
 807 void psxBios_rand() { // 0x2f
 808         u32 s = psxMu32(0x9010) * 1103515245 + 12345;
 809         v0 = (s >> 16) & 0x7fff;
 810         psxMu32ref(0x9010) = SWAPu32(s);
 811         pc0 = ra;
 812 }
 813
 814 void psxBios_srand() { // 0x30
 815         psxMu32ref(0x9010) = SWAPu32(a0);
 816         pc0 = ra;
 817 }
 818
 819 static u32 qscmpfunc, qswidth;
 820
 821 static inline int qscmp(char *a, char *b) {
 822         u32 sa0 = a0;
 823
 824         a0 = sa0 + (a - (char *)PSXM(sa0));
 825         a1 = sa0 + (b - (char *)PSXM(sa0));
 826
 827         softCall2(qscmpfunc);
 828
 829         a0 = sa0;
 830         return (s32)v0;
 831 }
 832
 833 static inline void qexchange(char *i, char *j) {
 834         char t;
 835         int n = qswidth;
 836
 837         do {
 838                 t = *i;
 839                 *i++ = *j;
 840                 *j++ = t;
 841         } while (--n);
 842 }
 843
 844 static inline void q3exchange(char *i, char *j, char *k) {
 845         char t;
 846         int n = qswidth;
 847
 848         do {
 849                 t = *i;
 850                 *i++ = *k;
 851                 *k++ = *j;
 852                 *j++ = t;
 853         } while (--n);
 854 }
 855
 856 static void qsort_main(char *a, char *l) {
 857         char *i, *j, *lp, *hp;
 858         int c;
 859         unsigned int n;
 860
 861 start:
 862         if ((n = l - a) <= qswidth)
 863                 return;
 864         n = qswidth * (n / (2 * qswidth));
 865         hp = lp = a + n;
 866         i = a;
 867         j = l - qswidth;
 868         while (TRUE) {
 869                 if (i < lp) {
 870                         if ((c = qscmp(i, lp)) == 0) {
 871                                 qexchange(i, lp -= qswidth);
 872                                 continue;
 873                         }
 874                         if (c < 0) {
 875                                 i += qswidth;
 876                                 continue;
 877                         }
 878                 }
 879
 880 loop:
 881                 if (j > hp) {
 882                         if ((c = qscmp(hp, j)) == 0) {
 883                                 qexchange(hp += qswidth, j);
 884                                 goto loop;
 885                         }
 886                         if (c > 0) {
 887                                 if (i == lp) {
 888                                         q3exchange(i, hp += qswidth, j);
 889                                         i = lp += qswidth;
 890                                         goto loop;
 891                                 }
 892                                 qexchange(i, j);
 893                                 j -= qswidth;
 894                                 i += qswidth;
 895                                 continue;
 896                         }
 897                         j -= qswidth;
 898                         goto loop;
 899                 }
 900
 901                 if (i == lp) {
 902                         if (lp - a >= l - hp) {
 903                                 qsort_main(hp + qswidth, l);
 904                                 l = lp;
 905                         } else {
 906                                 qsort_main(a, lp);
 907                                 a = hp + qswidth;
 908                         }
 909                         goto start;
 910                 }
 911
 912                 q3exchange(j, lp -= qswidth, i);
 913                 j = hp -= qswidth;
 914         }
 915 }
 916
 917 void psxBios_qsort() { // 0x31
 918         qswidth = a2;
 919         qscmpfunc = a3;
 920         qsort_main((char *)Ra0, (char *)Ra0 + a1 * a2);
 921
 922         pc0 = ra;
 923 }
 924
 925 void psxBios_malloc() { // 0x33
 926         unsigned int *chunk, *newchunk = NULL;
 927         unsigned int dsize = 0, csize, cstat;
 928         int colflag;
 929 #ifdef PSXBIOS_LOG
 930         PSXBIOS_LOG("psxBios_%s\n", biosA0n[0x33]);
 931 #endif
 932
 933         // scan through heap and combine free chunks of space
 934         chunk = heap_addr;
 935         colflag = 0;
 936         while(chunk < heap_end) {
 937                 // get size and status of actual chunk
 938                 csize = ((u32)*chunk) & 0xfffffffc;
 939                 cstat = ((u32)*chunk) & 1;
 940
 941                 // it's a free chunk
 942                 if(cstat == 1) {
 943                         if(colflag == 0) {
 944                                 newchunk = chunk;
 945                                 dsize = csize;
 946                                 colflag = 1;                    // let's begin a new collection of free memory
 947                         }
 948                         else dsize += (csize+4);        // add the new size including header
 949                 }
 950                 // not a free chunk: did we start a collection ?
 951                 else {
 952                         if(colflag == 1) {                      // collection is over
 953                                 colflag = 0;
 954                                 *newchunk = SWAP32(dsize | 1);
 955                         }
 956                 }
 957
 958                 // next chunk
 959                 chunk = (u32*)((uptr)chunk + csize + 4);
 960         }
 961         // if neccessary free memory on end of heap
 962         if (colflag == 1)
 963                 *newchunk = SWAP32(dsize | 1);
 964
 965         chunk = heap_addr;
 966         csize = ((u32)*chunk) & 0xfffffffc;
 967         cstat = ((u32)*chunk) & 1;
 968         dsize = (a0 + 3) & 0xfffffffc;
 969
 970         // exit on uninitialized heap
 971         if (chunk == NULL) {
 972                 SysPrintf("malloc %x,%x: Uninitialized Heap!\n", v0, a0);
 973                 v0 = 0;
 974                 pc0 = ra;
 975                 return;
 976         }
 977
 978         // search an unused chunk that is big enough until the end of the heap
 979         while ((dsize > csize || cstat == 0) && chunk < heap_end ) {
 980                 chunk = (u32*)((uptr)chunk + csize + 4);
 981                 csize = ((u32)*chunk) & 0xfffffffc;
 982                 cstat = ((u32)*chunk) & 1;
 983         }
 984
 985         // catch out of memory
 986         if(chunk >= heap_end) { SysPrintf("malloc %x,%x: Out of memory error!\n", v0, a0); v0 = 0; pc0 = ra; return; }
 987
 988         // allocate memory
 989         if(dsize == csize) {
 990                 // chunk has same size
 991                 *chunk &= 0xfffffffc;
 992         }
 993         else {
 994                 // split free chunk
 995                 *chunk = SWAP32(dsize);
 996                 newchunk = (u32*)((uptr)chunk + dsize + 4);
 997                 *newchunk = SWAP32(((csize - dsize - 4) & 0xfffffffc) | 1);
 998         }
 999
1000         // return pointer to allocated memory
1001         v0 = ((unsigned long)chunk - (unsigned long)psxM) + 4;
1002         v0|= 0x80000000;
1003         SysPrintf ("malloc %x,%x\n", v0, a0);
1004         pc0 = ra;
1005 }
1006
1007 void psxBios_free() { // 0x34
1008
1009 #ifdef PSXBIOS_LOG
1010         PSXBIOS_LOG("psxBios_%s\n", biosA0n[0x34]);
1011 #endif
1012
1013         SysPrintf("free %x: %x bytes\n", a0, *(u32*)(Ra0-4));
1014
1015         *(u32*)(Ra0-4) |= 1;    // set chunk to free
1016         pc0 = ra;
1017 }
1018
1019 void psxBios_calloc() { // 0x37
1020         void *pv0;
1021 #ifdef PSXBIOS_LOG
1022         PSXBIOS_LOG("psxBios_%s\n", biosA0n[0x37]);
1023 #endif
1024
1025         a0 = a0 * a1;
1026         psxBios_malloc();
1027         pv0 = Rv0;
1028         if (pv0)
1029                 memset(pv0, 0, a0);
1030 }
1031
1032 void psxBios_realloc() { // 0x38
1033         u32 block = a0;
1034         u32 size = a1;
1035 #ifdef PSXBIOS_LOG
1036         PSXBIOS_LOG("psxBios_%s\n", biosA0n[0x38]);
1037 #endif
1038
1039         a0 = block;
1040         /* If "old_buf" is zero, executes malloc(new_size), and returns r2=new_buf (or 0=failed). */
1041         if (block == 0)
1042         {
1043                 psxBios_malloc();
1044         }
1045         /* Else, if "new_size" is zero, executes free(old_buf), and returns r2=garbage. */
1046         else if (size == 0)
1047         {
1048                 psxBios_free();
1049         }
1050         /* Else, executes malloc(new_size), bcopy(old_buf,new_buf,new_size), and free(old_buf), and returns r2=new_buf (or 0=failed). */
1051         /* Note that it is not quite implemented this way here. */
1052         else
1053         {
1054                 psxBios_free();
1055                 a0 = size;
1056                 psxBios_malloc();
1057         }
1058 }
1059
1060
1061 /* InitHeap(void *block , int n) */
1062 void psxBios_InitHeap() { // 0x39
1063         unsigned int size;
1064
1065 #ifdef PSXBIOS_LOG
1066         PSXBIOS_LOG("psxBios_%s\n", biosA0n[0x39]);
1067 #endif
1068
1069         if (((a0 & 0x1fffff) + a1)>= 0x200000) size = 0x1ffffc - (a0 & 0x1fffff);
1070         else size = a1;
1071
1072         size &= 0xfffffffc;
1073
1074         heap_addr = (u32 *)Ra0;
1075         heap_end = (u32 *)((u8 *)heap_addr + size);
1076         *heap_addr = SWAP32(size | 1);
1077
1078         SysPrintf("InitHeap %x,%x : %x %x\n",a0,a1, (int)((uptr)heap_addr-(uptr)psxM), size);
1079
1080         pc0 = ra;
1081 }
1082
1083 void psxBios_getchar() { //0x3b
1084         v0 = getchar(); pc0 = ra;
1085 }
1086
1087 void psxBios_printf() { // 0x3f
1088         char tmp[1024];
1089         char tmp2[1024];
1090         u32 save[4];
1091         char *ptmp = tmp;
1092         int n=1, i=0, j;
1093         void *psp;
1094
1095         psp = PSXM(sp);
1096         if (psp) {
1097                 memcpy(save, psp, 4 * 4);
1098                 psxMu32ref(sp) = SWAP32((u32)a0);
1099                 psxMu32ref(sp + 4) = SWAP32((u32)a1);
1100                 psxMu32ref(sp + 8) = SWAP32((u32)a2);
1101                 psxMu32ref(sp + 12) = SWAP32((u32)a3);
1102         }
1103
1104         while (Ra0[i]) {
1105                 switch (Ra0[i]) {
1106                         case '%':
1107                                 j = 0;
1108                                 tmp2[j++] = '%';
1109 _start:
1110                                 switch (Ra0[++i]) {
1111                                         case '.':
1112                                         case 'l':
1113                                                 tmp2[j++] = Ra0[i]; goto _start;
1114                                         default:
1115                                                 if (Ra0[i] >= '0' && Ra0[i] <= '9') {
1116                                                         tmp2[j++] = Ra0[i];
1117                                                         goto _start;
1118                                                 }
1119                                                 break;
1120                                 }
1121                                 tmp2[j++] = Ra0[i];
1122                                 tmp2[j] = 0;
1123
1124                                 switch (Ra0[i]) {
1125                                         case 'f': case 'F':
1126                                                 ptmp += sprintf(ptmp, tmp2, (float)psxMu32(sp + n * 4)); n++; break;
1127                                         case 'a': case 'A':
1128                                         case 'e': case 'E':
1129                                         case 'g': case 'G':
1130                                                 ptmp += sprintf(ptmp, tmp2, (double)psxMu32(sp + n * 4)); n++; break;
1131                                         case 'p':
1132                                         case 'i': case 'u':
1133                                         case 'd': case 'D':
1134                                         case 'o': case 'O':
1135                                         case 'x': case 'X':
1136                                                 ptmp += sprintf(ptmp, tmp2, (unsigned int)psxMu32(sp + n * 4)); n++; break;
1137                                         case 'c':
1138                                                 ptmp += sprintf(ptmp, tmp2, (unsigned char)psxMu32(sp + n * 4)); n++; break;
1139                                         case 's':
1140                                                 ptmp += sprintf(ptmp, tmp2, (char*)PSXM(psxMu32(sp + n * 4))); n++; break;
1141                                         case '%':
1142                                                 *ptmp++ = Ra0[i]; break;
1143                                 }
1144                                 i++;
1145                                 break;
1146                         default:
1147                                 *ptmp++ = Ra0[i++];
1148                 }
1149         }
1150         *ptmp = 0;
1151
1152         if (psp)
1153                 memcpy(psp, save, 4 * 4);
1154
1155         SysPrintf("%s", tmp);
1156
1157         pc0 = ra;
1158 }
1159
1160 void psxBios_format() { // 0x41
1161         if (strcmp(Ra0, "bu00:") == 0 && Config.Mcd1[0] != '\0')
1162         {
1163                 CreateMcd(Config.Mcd1);
1164                 LoadMcd(1, Config.Mcd1);
1165                 v0 = 1;
1166         }
1167         else if (strcmp(Ra0, "bu10:") == 0 && Config.Mcd2[0] != '\0')
1168         {
1169                 CreateMcd(Config.Mcd2);
1170                 LoadMcd(2, Config.Mcd2);
1171                 v0 = 1;
1172         }
1173         else
1174         {
1175                 v0 = 0;
1176         }
1177         pc0 = ra;
1178 }
1179
1180 /*
1181  *      long Load(char *name, struct EXEC *header);
1182  */
1183
1184 void psxBios_Load() { // 0x42
1185         EXE_HEADER eheader;
1186         void *pa1;
1187
1188 #ifdef PSXBIOS_LOG
1189         PSXBIOS_LOG("psxBios_%s: %s, %x\n", biosA0n[0x42], Ra0, a1);
1190 #endif
1191
1192         pa1 = Ra1;
1193         if (pa1 && LoadCdromFile(Ra0, &eheader) == 0) {
1194                 memcpy(pa1, ((char*)&eheader)+16, sizeof(EXEC));
1195                 v0 = 1;
1196         } else v0 = 0;
1197
1198         pc0 = ra;
1199 }
1200
1201 /*
1202  *      int Exec(struct EXEC *header , int argc , char **argv);
1203  */
1204
1205 void psxBios_Exec() { // 43
1206         EXEC *header = (EXEC*)Ra0;
1207         u32 tmp;
1208
1209 #ifdef PSXBIOS_LOG
1210         PSXBIOS_LOG("psxBios_%s: %x, %x, %x\n", biosA0n[0x43], a0, a1, a2);
1211 #endif
1212
1213         header->_sp = sp;
1214         header->_fp = fp;
1215         header->_sp = sp;
1216         header->_gp = gp;
1217         header->ret = ra;
1218         header->base = s0;
1219
1220         if (header->S_addr != 0) {
1221                 tmp = header->S_addr + header->s_size;
1222                 sp = tmp;
1223                 fp = sp;
1224         }
1225
1226         gp = header->gp0;
1227
1228         s0 = a0;
1229
1230         a0 = a1;
1231         a1 = a2;
1232
1233         ra = 0x8000;
1234         pc0 = header->_pc0;
1235 }
1236
1237 void psxBios_FlushCache() { // 44
1238 #ifdef PSXBIOS_LOG
1239         PSXBIOS_LOG("psxBios_%s\n", biosA0n[0x44]);
1240 #endif
1241
1242         pc0 = ra;
1243 }
1244
1245 void psxBios_GPU_dw() { // 0x46
1246         int size;
1247         s32 *ptr;
1248
1249 #ifdef PSXBIOS_LOG
1250         PSXBIOS_LOG("psxBios_%s\n", biosA0n[0x46]);
1251 #endif
1252
1253         GPU_writeData(0xa0000000);
1254         GPU_writeData((a1<<16)|(a0&0xffff));
1255         GPU_writeData((a3<<16)|(a2&0xffff));
1256         size = (a2*a3+1)/2;
1257         ptr = (s32*)PSXM(Rsp[4]);  //that is correct?
1258         do {
1259                 GPU_writeData(SWAP32(*ptr));
1260                 ptr++;
1261         } while(--size);
1262
1263         pc0 = ra;
1264 }
1265
1266 void psxBios_mem2vram() { // 0x47
1267         int size;
1268
1269         GPU_writeData(0xa0000000);
1270         GPU_writeData((a1<<16)|(a0&0xffff));
1271         GPU_writeData((a3<<16)|(a2&0xffff));
1272         size = (a2*a3+1)/2;
1273         GPU_writeStatus(0x04000002);
1274         psxHwWrite32(0x1f8010f4,0);
1275         psxHwWrite32(0x1f8010f0,psxHwRead32(0x1f8010f0)|0x800);
1276         psxHwWrite32(0x1f8010a0,Rsp[4]);//might have a buggy...
1277         psxHwWrite32(0x1f8010a4,((size/16)<<16)|16);
1278         psxHwWrite32(0x1f8010a8,0x01000201);
1279
1280         pc0 = ra;
1281 }
1282
1283 void psxBios_SendGPU() { // 0x48
1284         GPU_writeStatus(a0);
1285         gpuSyncPluginSR();
1286         pc0 = ra;
1287 }
1288
1289 void psxBios_GPU_cw() { // 0x49
1290         GPU_writeData(a0);
1291         pc0 = ra;
1292 }
1293
1294 void psxBios_GPU_cwb() { // 0x4a
1295         s32 *ptr = (s32*)Ra0;
1296         int size = a1;
1297         while(size--) {
1298                 GPU_writeData(SWAP32(*ptr));
1299                 ptr++;
1300         }
1301
1302         pc0 = ra;
1303 }
1304
1305 void psxBios_GPU_SendPackets() { //4b:
1306         GPU_writeStatus(0x04000002);
1307         psxHwWrite32(0x1f8010f4,0);
1308         psxHwWrite32(0x1f8010f0,psxHwRead32(0x1f8010f0)|0x800);
1309         psxHwWrite32(0x1f8010a0,a0);
1310         psxHwWrite32(0x1f8010a4,0);
1311         psxHwWrite32(0x1f8010a8,0x010000401);
1312         pc0 = ra;
1313 }
1314
1315 void psxBios_sys_a0_4c() { // 0x4c GPU relate
1316         psxHwWrite32(0x1f8010a8,0x00000401);
1317         GPU_writeData(0x0400000);
1318         GPU_writeData(0x0200000);
1319         GPU_writeData(0x0100000);
1320         v0 = 0x1f801814;
1321         pc0 = ra;
1322 }
1323
1324 void psxBios_GPU_GetGPUStatus() { // 0x4d
1325         v0 = GPU_readStatus();
1326         pc0 = ra;
1327 }
1328
1329 #undef s_addr
1330
1331 void psxBios_LoadExec() { // 51
1332         EXEC *header = (EXEC*)PSXM(0xf000);
1333         u32 s_addr, s_size;
1334
1335 #ifdef PSXBIOS_LOG
1336         PSXBIOS_LOG("psxBios_%s: %s: %x,%x\n", biosA0n[0x51], Ra0, a1, a2);
1337 #endif
1338         s_addr = a1; s_size = a2;
1339
1340         a1 = 0xf000;
1341         psxBios_Load();
1342
1343         header->S_addr = s_addr;
1344         header->s_size = s_size;
1345
1346         a0 = 0xf000; a1 = 0; a2 = 0;
1347         psxBios_Exec();
1348 }
1349
1350 void psxBios__bu_init() { // 70
1351 #ifdef PSXBIOS_LOG
1352         PSXBIOS_LOG("psxBios_%s\n", biosA0n[0x70]);
1353 #endif
1354
1355         DeliverEvent(0x11, 0x2); // 0xf0000011, 0x0004
1356         DeliverEvent(0x81, 0x2); // 0xf4000001, 0x0004
1357
1358         pc0 = ra;
1359 }
1360
1361 void psxBios__96_init() { // 71
1362 #ifdef PSXBIOS_LOG
1363         PSXBIOS_LOG("psxBios_%s\n", biosA0n[0x71]);
1364 #endif
1365
1366         pc0 = ra;
1367 }
1368
1369 void psxBios__96_remove() { // 72
1370 #ifdef PSXBIOS_LOG
1371         PSXBIOS_LOG("psxBios_%s\n", biosA0n[0x72]);
1372 #endif
1373
1374         pc0 = ra;
1375 }
1376
1377 void psxBios_SetMem() { // 9f
1378         u32 new = psxHu32(0x1060);
1379
1380 #ifdef PSXBIOS_LOG
1381         PSXBIOS_LOG("psxBios_%s: %x, %x\n", biosA0n[0x9f], a0, a1);
1382 #endif
1383
1384         switch(a0) {
1385                 case 2:
1386                         psxHu32ref(0x1060) = SWAP32(new);
1387                         psxMu32ref(0x060) = a0;
1388                         SysPrintf("Change effective memory : %d MBytes\n",a0);
1389                         break;
1390
1391                 case 8:
1392                         psxHu32ref(0x1060) = SWAP32(new | 0x300);
1393                         psxMu32ref(0x060) = a0;
1394                         SysPrintf("Change effective memory : %d MBytes\n",a0);
1395
1396                 default:
1397                         SysPrintf("Effective memory must be 2/8 MBytes\n");
1398                 break;
1399         }
1400
1401         pc0 = ra;
1402 }
1403
1404 void psxBios__card_info() { // ab
1405 #ifdef PSXBIOS_LOG
1406         PSXBIOS_LOG("psxBios_%s: %x\n", biosA0n[0xab], a0);
1407 #endif
1408         u32 ret;
1409         card_active_chan = a0;
1410
1411         switch (card_active_chan)
1412         {
1413         case 0x00: case 0x01: case 0x02: case 0x03:
1414                 ret = Config.Mcd1[0] ? 0x2 : 0x8;
1415                 break;
1416         case 0x10: case 0x11: case 0x12: case 0x13:
1417                 ret = Config.Mcd2[0] ? 0x2 : 0x8;
1418                 break;
1419         default:
1420 #ifdef PSXBIOS_LOG
1421                 PSXBIOS_LOG("psxBios_%s: UNKNOWN PORT 0x%x\n", biosA0n[0xab], card_active_chan);
1422 #endif
1423                 ret = 0x11;
1424                 break;
1425         }
1426
1427 //      DeliverEvent(0x11, 0x2); // 0xf0000011, 0x0004
1428 //      DeliverEvent(0x11, 0x2); // 0xf0000011, 0x0004
1429         DeliverEvent(0x81, 0x2); // 0xf4000001, 0x0004
1430         DeliverEvent(0x81, ret); // 0xf4000001, 0x0004
1431
1432         v0 = 1; pc0 = ra;
1433 }
1434
1435 void psxBios__card_load() { // ac
1436 #ifdef PSXBIOS_LOG
1437         PSXBIOS_LOG("psxBios_%s: %x\n", biosA0n[0xac], a0);
1438 #endif
1439
1440         card_active_chan = a0;
1441
1442 //      DeliverEvent(0x11, 0x2); // 0xf0000011, 0x0004
1443         DeliverEvent(0x81, 0x2); // 0xf4000001, 0x0004
1444
1445         v0 = 1; pc0 = ra;
1446 }
1447
1448 /* System calls B0 */
1449
1450 void psxBios_SetRCnt() { // 02
1451 #ifdef PSXBIOS_LOG
1452         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x02]);
1453 #endif
1454
1455         a0&= 0x3;
1456         if (a0 != 3) {
1457                 u32 mode=0;
1458
1459                 psxRcntWtarget(a0, a1);
1460                 if (a2&0x1000) mode|= 0x050; // Interrupt Mode
1461                 if (a2&0x0100) mode|= 0x008; // Count to 0xffff
1462                 if (a2&0x0010) mode|= 0x001; // Timer stop mode
1463                 if (a0 == 2) { if (a2&0x0001) mode|= 0x200; } // System Clock mode
1464                 else         { if (a2&0x0001) mode|= 0x100; } // System Clock mode
1465
1466                 psxRcntWmode(a0, mode);
1467         }
1468         pc0 = ra;
1469 }
1470
1471 void psxBios_GetRCnt() { // 03
1472 #ifdef PSXBIOS_LOG
1473         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x03]);
1474 #endif
1475
1476         a0&= 0x3;
1477         if (a0 != 3) v0 = psxRcntRcount(a0);
1478         else v0 = 0;
1479         pc0 = ra;
1480 }
1481
1482 void psxBios_StartRCnt() { // 04
1483 #ifdef PSXBIOS_LOG
1484         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x04]);
1485 #endif
1486
1487         a0&= 0x3;
1488         if (a0 != 3) psxHu32ref(0x1074)|= SWAP32((u32)((1<<(a0+4))));
1489         else psxHu32ref(0x1074)|= SWAPu32(0x1);
1490         v0 = 1; pc0 = ra;
1491 }
1492
1493 void psxBios_StopRCnt() { // 05
1494 #ifdef PSXBIOS_LOG
1495         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x05]);
1496 #endif
1497
1498         a0&= 0x3;
1499         if (a0 != 3) psxHu32ref(0x1074)&= SWAP32((u32)(~(1<<(a0+4))));
1500         else psxHu32ref(0x1074)&= SWAPu32(~0x1);
1501         pc0 = ra;
1502 }
1503
1504 void psxBios_ResetRCnt() { // 06
1505 #ifdef PSXBIOS_LOG
1506         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x06]);
1507 #endif
1508
1509         a0&= 0x3;
1510         if (a0 != 3) {
1511                 psxRcntWmode(a0, 0);
1512                 psxRcntWtarget(a0, 0);
1513                 psxRcntWcount(a0, 0);
1514         }
1515         pc0 = ra;
1516 }
1517
1518
1519 /* gets ev for use with Event */
1520 #define GetEv() \
1521         ev = (a0 >> 24) & 0xf; \
1522         if (ev == 0xf) ev = 0x5; \
1523         ev*= 32; \
1524         ev+= a0&0x1f;
1525
1526 /* gets spec for use with Event */
1527 #define GetSpec() \
1528         spec = 0; \
1529         switch (a1) { \
1530                 case 0x0301: spec = 16; break; \
1531                 case 0x0302: spec = 17; break; \
1532                 default: \
1533                         for (i=0; i<16; i++) if (a1 & (1 << i)) { spec = i; break; } \
1534                         break; \
1535         }
1536
1537 void psxBios_DeliverEvent() { // 07
1538         int ev, spec;
1539         int i;
1540
1541         GetEv();
1542         GetSpec();
1543
1544 #ifdef PSXBIOS_LOG
1545         PSXBIOS_LOG("psxBios_%s %x,%x\n", biosB0n[0x07], ev, spec);
1546 #endif
1547
1548         DeliverEvent(ev, spec);
1549
1550         pc0 = ra;
1551 }
1552
1553 void psxBios_OpenEvent() { // 08
1554         int ev, spec;
1555         int i;
1556
1557         GetEv();
1558         GetSpec();
1559
1560 #ifdef PSXBIOS_LOG
1561         PSXBIOS_LOG("psxBios_%s %x,%x (class:%x, spec:%x, mode:%x, func:%x)\n", biosB0n[0x08], ev, spec, a0, a1, a2, a3);
1562 #endif
1563
1564         Event[ev][spec].status = EvStWAIT;
1565         Event[ev][spec].mode = a2;
1566         Event[ev][spec].fhandler = a3;
1567
1568         v0 = ev | (spec << 8);
1569         pc0 = ra;
1570 }
1571
1572 void psxBios_CloseEvent() { // 09
1573         int ev, spec;
1574
1575         ev   = a0 & 0xff;
1576         spec = (a0 >> 8) & 0xff;
1577
1578 #ifdef PSXBIOS_LOG
1579         PSXBIOS_LOG("psxBios_%s %x,%x\n", biosB0n[0x09], ev, spec);
1580 #endif
1581
1582         Event[ev][spec].status = EvStUNUSED;
1583
1584         v0 = 1; pc0 = ra;
1585 }
1586
1587 void psxBios_WaitEvent() { // 0a
1588         int ev, spec;
1589
1590         ev   = a0 & 0xff;
1591         spec = (a0 >> 8) & 0xff;
1592 #ifdef PSXBIOS_LOG
1593         PSXBIOS_LOG("psxBios_%s %x,%x\n", biosB0n[0x0a], ev, spec);
1594 #endif
1595         if (Event[ev][spec].status == EvStUNUSED)
1596         {
1597                 v0 = 0;
1598                 pc0 = ra;
1599                 return;
1600         }
1601
1602         if (Event[ev][spec].status == EvStALREADY)
1603         {
1604                 /* Callback events (mode=EvMdINTR) do never set the ready flag (and thus WaitEvent would hang forever). */
1605                 if (!(Event[ev][spec].mode == EvMdINTR)) Event[ev][spec].status = EvStACTIVE;
1606                 v0 = 1;
1607                 pc0 = ra;
1608                 return;
1609         }
1610
1611         v0 = 0;
1612         pc0 = ra;
1613 }
1614
1615 void psxBios_TestEvent() { // 0b
1616         int ev, spec;
1617
1618         ev   = a0 & 0xff;
1619         spec = (a0 >> 8) & 0xff;
1620
1621         if (Event[ev][spec].status == EvStALREADY) {
1622                 Event[ev][spec].status = EvStACTIVE; v0 = 1;
1623         } else v0 = 0;
1624
1625 #ifdef PSXBIOS_LOG
1626         PSXBIOS_LOG("psxBios_%s %x,%x: %x\n", biosB0n[0x0b], ev, spec, v0);
1627 #endif
1628
1629         pc0 = ra;
1630 }
1631
1632 void psxBios_EnableEvent() { // 0c
1633         int ev, spec;
1634
1635         ev   = a0 & 0xff;
1636         spec = (a0 >> 8) & 0xff;
1637
1638 #ifdef PSXBIOS_LOG
1639         PSXBIOS_LOG("psxBios_%s %x,%x\n", biosB0n[0x0c], ev, spec);
1640 #endif
1641
1642         Event[ev][spec].status = EvStACTIVE;
1643
1644         v0 = 1; pc0 = ra;
1645 }
1646
1647 void psxBios_DisableEvent() { // 0d
1648         int ev, spec;
1649
1650         ev   = a0 & 0xff;
1651         spec = (a0 >> 8) & 0xff;
1652
1653 #ifdef PSXBIOS_LOG
1654         PSXBIOS_LOG("psxBios_%s %x,%x\n", biosB0n[0x0d], ev, spec);
1655 #endif
1656
1657         Event[ev][spec].status = EvStWAIT;
1658
1659         v0 = 1; pc0 = ra;
1660 }
1661
1662 /*
1663  *      long OpenTh(long (*func)(), unsigned long sp, unsigned long gp);
1664  */
1665
1666 void psxBios_OpenTh() { // 0e
1667         int th;
1668
1669         for (th=1; th<8; th++)
1670         {
1671                 if (Thread[th].status == 0) break;
1672
1673         }
1674         if (th == 8) {
1675                 // Feb 2019 - Added out-of-bounds fix caught by cppcheck:
1676                 // When no free TCB is found, return 0xffffffff according to Nocash doc.
1677 #ifdef PSXBIOS_LOG
1678                 PSXBIOS_LOG("\t%s() WARNING! No Free TCBs found!\n", __func__);
1679 #endif
1680                 v0 = 0xffffffff;
1681                 pc0 = ra;
1682                 return;
1683         }
1684 #ifdef PSXBIOS_LOG
1685         PSXBIOS_LOG("psxBios_%s: %x\n", biosB0n[0x0e], th);
1686 #endif
1687
1688         Thread[th].status = 1;
1689         Thread[th].func    = a0;
1690         Thread[th].reg[29] = a1;
1691         Thread[th].reg[28] = a2;
1692
1693         v0 = th; pc0 = ra;
1694 }
1695
1696 /*
1697  *      int CloseTh(long thread);
1698  */
1699
1700 void psxBios_CloseTh() { // 0f
1701         int th = a0 & 0xff;
1702
1703 #ifdef PSXBIOS_LOG
1704         PSXBIOS_LOG("psxBios_%s: %x\n", biosB0n[0x0f], th);
1705 #endif
1706
1707         if (Thread[th].status == 0) {
1708                 v0 = 0;
1709         } else {
1710                 Thread[th].status = 0;
1711                 v0 = 1;
1712         }
1713
1714         pc0 = ra;
1715 }
1716
1717 /*
1718  *      int ChangeTh(long thread);
1719  */
1720
1721 void psxBios_ChangeTh() { // 10
1722         int th = a0 & 0xff;
1723
1724 #ifdef PSXBIOS_LOG
1725 //      PSXBIOS_LOG("psxBios_%s: %x\n", biosB0n[0x10], th);
1726 #endif
1727
1728         if (Thread[th].status == 0 || CurThread == th) {
1729                 v0 = 0;
1730
1731                 pc0 = ra;
1732         } else {
1733                 v0 = 1;
1734
1735                 if (Thread[CurThread].status == 2) {
1736                         Thread[CurThread].status = 1;
1737                         Thread[CurThread].func = ra;
1738                         memcpy(Thread[CurThread].reg, psxRegs.GPR.r, 32*4);
1739                 }
1740
1741                 memcpy(psxRegs.GPR.r, Thread[th].reg, 32*4);
1742                 pc0 = Thread[th].func;
1743                 Thread[th].status = 2;
1744                 CurThread = th;
1745         }
1746 }
1747
1748 void psxBios_InitPAD() { // 0x12
1749 #ifdef PSXBIOS_LOG
1750         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x12]);
1751 #endif
1752
1753         pad_buf1 = (char*)Ra0;
1754         pad_buf1len = a1;
1755         pad_buf2 = (char*)Ra2;
1756         pad_buf2len = a3;
1757
1758         v0 = 1; pc0 = ra;
1759 }
1760
1761 void psxBios_StartPAD() { // 13
1762 #ifdef PSXBIOS_LOG
1763         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x13]);
1764 #endif
1765
1766         psxHwWrite16(0x1f801074, (unsigned short)(psxHwRead16(0x1f801074) | 0x1));
1767         psxRegs.CP0.n.Status |= 0x401;
1768         pc0 = ra;
1769 }
1770
1771 void psxBios_StopPAD() { // 14
1772 #ifdef PSXBIOS_LOG
1773         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x14]);
1774 #endif
1775         if (pad_buf == 0){
1776         pad_buf1 = NULL;
1777         pad_buf2 = NULL;
1778         }
1779         pc0 = ra;
1780 }
1781
1782 void psxBios_PAD_init() { // 15
1783 #ifdef PSXBIOS_LOG
1784         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x15]);
1785 #endif
1786         if (!(a0 == 0x20000000 || a0 == 0x20000001))
1787         {
1788                 v0 = 0;
1789                 pc0 = ra;
1790                 return;
1791         }
1792         psxHwWrite16(0x1f801074, (u16)(psxHwRead16(0x1f801074) | 0x1));
1793         pad_buf = (int *)Ra1;
1794         *pad_buf = -1;
1795         psxRegs.CP0.n.Status |= 0x401;
1796         v0 = 2;
1797         pc0 = ra;
1798 }
1799
1800 void psxBios_PAD_dr() { // 16
1801 #ifdef PSXBIOS_LOG
1802         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x16]);
1803 #endif
1804
1805         v0 = -1; pc0 = ra;
1806 }
1807
1808 void psxBios_ReturnFromException() { // 17
1809         LoadRegs();
1810
1811         pc0 = psxRegs.CP0.n.EPC;
1812         if (psxRegs.CP0.n.Cause & 0x80000000) pc0 += 4;
1813
1814         psxRegs.CP0.n.Status = (psxRegs.CP0.n.Status & 0xfffffff0) |
1815                                                   ((psxRegs.CP0.n.Status & 0x3c) >> 2);
1816 }
1817
1818 void psxBios_ResetEntryInt() { // 18
1819 #ifdef PSXBIOS_LOG
1820         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x18]);
1821 #endif
1822
1823         jmp_int = NULL;
1824         pc0 = ra;
1825 }
1826
1827 void psxBios_HookEntryInt() { // 19
1828 #ifdef PSXBIOS_LOG
1829         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x19]);
1830 #endif
1831
1832         jmp_int = (u32*)Ra0;
1833         pc0 = ra;
1834 }
1835
1836 void psxBios_UnDeliverEvent() { // 0x20
1837         int ev, spec;
1838         int i;
1839
1840         GetEv();
1841         GetSpec();
1842
1843 #ifdef PSXBIOS_LOG
1844         PSXBIOS_LOG("psxBios_%s %x,%x\n", biosB0n[0x20], ev, spec);
1845 #endif
1846
1847         if (Event[ev][spec].status == EvStALREADY &&
1848                 Event[ev][spec].mode == EvMdNOINTR)
1849                 Event[ev][spec].status = EvStACTIVE;
1850
1851         pc0 = ra;
1852 }
1853
1854 char ffile[64], *pfile;
1855 int nfile;
1856 static void buopen(int mcd, u8 *ptr, u8 *cfg)
1857 {
1858         int i;
1859         u8 *fptr = ptr;
1860
1861         strcpy(FDesc[1 + mcd].name, Ra0+5);
1862         FDesc[1 + mcd].offset = 0;
1863         FDesc[1 + mcd].mode   = a1;
1864
1865         for (i=1; i<16; i++) {
1866                 fptr += 128;
1867                 if ((*fptr & 0xF0) != 0x50) continue;
1868                 if (strcmp(FDesc[1 + mcd].name, fptr+0xa)) continue;
1869                 FDesc[1 + mcd].mcfile = i;
1870                 SysPrintf("open %s\n", fptr+0xa);
1871                 v0 = 1 + mcd;
1872                 break;
1873         }
1874         if (a1 & 0x200 && v0 == -1) { /* FCREAT */
1875                 fptr = ptr;
1876                 for (i=1; i<16; i++) {
1877                         int j, xor, nblk = a1 >> 16;
1878                         u8 *pptr, *fptr2;
1879
1880                         fptr += 128;
1881                         if ((*fptr & 0xF0) != 0xa0) continue;
1882
1883                         FDesc[1 + mcd].mcfile = i;
1884                         fptr[0] = 0x51;
1885                         fptr[4] = 0x00;
1886                         fptr[5] = 0x20 * nblk;
1887                         fptr[6] = 0x00;
1888                         fptr[7] = 0x00;
1889                         strcpy(fptr+0xa, FDesc[1 + mcd].name);
1890                         pptr = fptr2 = fptr;
1891                         for(j=2; j<=nblk; j++) {
1892                                 int k;
1893                                 for(i++; i<16; i++) {
1894                                         fptr2 += 128;
1895
1896                                         memset(fptr2, 0, 128);
1897                                         fptr2[0] = j < nblk ? 0x52 : 0x53;
1898                                         pptr[8] = i - 1;
1899                                         pptr[9] = 0;
1900                                         for (k=0, xor=0; k<127; k++) xor^= pptr[k];
1901                                         pptr[127] = xor;
1902                                         pptr = fptr2;
1903                                         break;
1904                                 }
1905                                 /* shouldn't this return ENOSPC if i == 16? */
1906                         }
1907                         pptr[8] = pptr[9] = 0xff;
1908                         for (j=0, xor=0; j<127; j++) xor^= pptr[j];
1909                         pptr[127] = xor;
1910                         SysPrintf("openC %s %d\n", ptr, nblk);
1911                         v0 = 1 + mcd;
1912                         /* just go ahead and resave them all */
1913                         SaveMcd(cfg, ptr, 128, 128 * 15);
1914                         break;
1915                 }
1916                 /* shouldn't this return ENOSPC if i == 16? */
1917         }
1918 }
1919
1920 /*
1921  *      int open(char *name , int mode);
1922  */
1923
1924 void psxBios_open() { // 0x32
1925         int i;
1926         char *ptr;
1927         void *pa0 = Ra0;
1928
1929 #ifdef PSXBIOS_LOG
1930         PSXBIOS_LOG("psxBios_%s: %s,%x\n", biosB0n[0x32], Ra0, a1);
1931 #endif
1932
1933         v0 = -1;
1934
1935         if (pa0) {
1936                 if (!strncmp(pa0, "bu00", 4)) {
1937                         buopen(1, Mcd1Data, Config.Mcd1);
1938                 }
1939
1940                 if (!strncmp(pa0, "bu10", 4)) {
1941                         buopen(2, Mcd2Data, Config.Mcd2);
1942                 }
1943         }
1944
1945         pc0 = ra;
1946 }
1947
1948 /*
1949  *      int lseek(int fd , int offset , int whence);
1950  */
1951
1952 void psxBios_lseek() { // 0x33
1953 #ifdef PSXBIOS_LOG
1954         PSXBIOS_LOG("psxBios_%s: %x, %x, %x\n", biosB0n[0x33], a0, a1, a2);
1955 #endif
1956
1957         switch (a2) {
1958                 case 0: // SEEK_SET
1959                         FDesc[a0].offset = a1;
1960                         v0 = a1;
1961 //                      DeliverEvent(0x11, 0x2); // 0xf0000011, 0x0004
1962 //                      DeliverEvent(0x81, 0x2); // 0xf4000001, 0x0004
1963                         break;
1964
1965                 case 1: // SEEK_CUR
1966                         FDesc[a0].offset+= a1;
1967                         v0 = FDesc[a0].offset;
1968                         break;
1969         }
1970
1971         pc0 = ra;
1972 }
1973
1974
1975 /*
1976  *      int read(int fd , void *buf , int nbytes);
1977  */
1978
1979 void psxBios_read() { // 0x34
1980         char *ptr;
1981         void *pa1 = Ra1;
1982
1983 #ifdef PSXBIOS_LOG
1984         PSXBIOS_LOG("psxBios_%s: %x, %x, %x\n", biosB0n[0x34], a0, a1, a2);
1985 #endif
1986
1987         v0 = -1;
1988
1989         if (pa1) {
1990                 switch (a0) {
1991                         case 2: buread(pa1, 1, a2); break;
1992                         case 3: buread(pa1, 2, a2); break;
1993                 }
1994         }
1995
1996         pc0 = ra;
1997 }
1998
1999 /*
2000  *      int write(int fd , void *buf , int nbytes);
2001  */
2002
2003 void psxBios_write() { // 0x35/0x03
2004         char *ptr;
2005         void *pa1 = Ra1;
2006
2007 #ifdef PSXBIOS_LOG
2008         PSXBIOS_LOG("psxBios_%s: %x,%x,%x\n", biosB0n[0x35], a0, a1, a2);
2009 #endif
2010
2011         v0 = -1;
2012         if (!pa1) {
2013                 pc0 = ra;
2014                 return;
2015         }
2016
2017         if (a0 == 1) { // stdout
2018                 char *ptr = pa1;
2019
2020                 v0 = a2;
2021                 while (a2 > 0) {
2022                         SysPrintf("%c", *ptr++); a2--;
2023                 }
2024                 pc0 = ra; return;
2025         }
2026
2027         switch (a0) {
2028                 case 2: buwrite(pa1, 1, a2); break;
2029                 case 3: buwrite(pa1, 2, a2); break;
2030         }
2031
2032         pc0 = ra;
2033 }
2034
2035 /*
2036  *      int close(int fd);
2037  */
2038
2039 void psxBios_close() { // 0x36
2040 #ifdef PSXBIOS_LOG
2041         PSXBIOS_LOG("psxBios_%s: %x\n", biosB0n[0x36], a0);
2042 #endif
2043
2044         v0 = a0;
2045         pc0 = ra;
2046 }
2047
2048 void psxBios_putchar() { // 3d
2049         SysPrintf("%c", (char)a0);
2050         pc0 = ra;
2051 }
2052
2053 void psxBios_puts() { // 3e/3f
2054         SysPrintf("%s", Ra0);
2055         pc0 = ra;
2056 }
2057
2058 char ffile[64], *pfile;
2059 int nfile;
2060
2061 #define bufile(mcd) { \
2062         while (nfile < 16) { \
2063                 int match=1; \
2064  \
2065                 ptr = Mcd##mcd##Data + 128 * (nfile + 1); \
2066                 nfile++; \
2067                 if ((*ptr & 0xF0) != 0x50) continue; \
2068                 /* Bug link files show up as free block. */ \
2069                 if (!ptr[0xa]) continue; \
2070                 ptr+= 0xa; \
2071                 if (pfile[0] == 0) { \
2072                         strncpy(dir->name, ptr, sizeof(dir->name)); \
2073                         dir->name[sizeof(dir->name) - 1] = '\0'; \
2074                 } else for (i=0; i<20; i++) { \
2075                         if (pfile[i] == ptr[i]) { \
2076                                                                 dir->name[i] = ptr[i]; continue; } \
2077                         if (pfile[i] == '?') { \
2078                                 dir->name[i] = ptr[i]; continue; } \
2079                         if (pfile[i] == '*') { \
2080                                 strcpy(dir->name+i, ptr+i); break; } \
2081                         match = 0; break; \
2082                 } \
2083                 SysPrintf("%d : %s = %s + %s (match=%d)\n", nfile, dir->name, pfile, ptr, match); \
2084                 if (match == 0) { continue; } \
2085                 dir->size = 8192; \
2086                 v0 = _dir; \
2087                 break; \
2088         } \
2089 }
2090
2091 /*
2092  *      struct DIRENTRY* firstfile(char *name,struct DIRENTRY *dir);
2093  */
2094
2095 void psxBios_firstfile() { // 42
2096         struct DIRENTRY *dir = (struct DIRENTRY *)Ra1;
2097         void *pa0 = Ra0;
2098         u32 _dir = a1;
2099         char *ptr;
2100         int i;
2101
2102 #ifdef PSXBIOS_LOG
2103         PSXBIOS_LOG("psxBios_%s: %s\n", biosB0n[0x42], Ra0);
2104 #endif
2105
2106         v0 = 0;
2107
2108         if (pa0) {
2109                 strcpy(ffile, pa0);
2110                 pfile = ffile+5;
2111                 nfile = 1;
2112                 if (!strncmp(pa0, "bu00", 4)) {
2113                         bufile(1);
2114                 } else if (!strncmp(pa0, "bu10", 4)) {
2115                         bufile(2);
2116                 }
2117         }
2118
2119         // firstfile() calls _card_read() internally, so deliver it's event
2120         DeliverEvent(0x11, 0x2);
2121
2122         pc0 = ra;
2123 }
2124
2125 /*
2126  *      struct DIRENTRY* nextfile(struct DIRENTRY *dir);
2127  */
2128
2129 void psxBios_nextfile() { // 43
2130         struct DIRENTRY *dir = (struct DIRENTRY *)Ra0;
2131         u32 _dir = a0;
2132         char *ptr;
2133         int i;
2134
2135 #ifdef PSXBIOS_LOG
2136         PSXBIOS_LOG("psxBios_%s: %s\n", biosB0n[0x43], dir->name);
2137 #endif
2138
2139         v0 = 0;
2140
2141         if (!strncmp(ffile, "bu00", 4)) {
2142                 bufile(1);
2143         }
2144
2145         if (!strncmp(ffile, "bu10", 4)) {
2146                 bufile(2);
2147         }
2148
2149         pc0 = ra;
2150 }
2151
2152 #define burename(mcd) { \
2153         for (i=1; i<16; i++) { \
2154                 int namelen, j, xor = 0; \
2155                 ptr = Mcd##mcd##Data + 128 * i; \
2156                 if ((*ptr & 0xF0) != 0x50) continue; \
2157                 if (strcmp(Ra0+5, ptr+0xa)) continue; \
2158                 namelen = strlen(Ra1+5); \
2159                 memcpy(ptr+0xa, Ra1+5, namelen); \
2160                 memset(ptr+0xa+namelen, 0, 0x75-namelen); \
2161                 for (j=0; j<127; j++) xor^= ptr[j]; \
2162                 ptr[127] = xor; \
2163                 SaveMcd(Config.Mcd##mcd, Mcd##mcd##Data, 128 * i + 0xa, 0x76); \
2164                 v0 = 1; \
2165                 break; \
2166         } \
2167 }
2168
2169 /*
2170  *      int rename(char *old, char *new);
2171  */
2172
2173 void psxBios_rename() { // 44
2174         void *pa0 = Ra0;
2175         void *pa1 = Ra1;
2176         char *ptr;
2177         int i;
2178
2179 #ifdef PSXBIOS_LOG
2180         PSXBIOS_LOG("psxBios_%s: %s,%s\n", biosB0n[0x44], Ra0, Ra1);
2181 #endif
2182
2183         v0 = 0;
2184
2185         if (pa0 && pa1) {
2186                 if (!strncmp(pa0, "bu00", 4) && !strncmp(pa1, "bu00", 4)) {
2187                         burename(1);
2188                 }
2189
2190                 if (!strncmp(pa0, "bu10", 4) && !strncmp(pa1, "bu10", 4)) {
2191                         burename(2);
2192                 }
2193         }
2194
2195         pc0 = ra;
2196 }
2197
2198
2199 #define budelete(mcd) { \
2200         for (i=1; i<16; i++) { \
2201                 ptr = Mcd##mcd##Data + 128 * i; \
2202                 if ((*ptr & 0xF0) != 0x50) continue; \
2203                 if (strcmp(Ra0+5, ptr+0xa)) continue; \
2204                 *ptr = (*ptr & 0xf) | 0xA0; \
2205                 SaveMcd(Config.Mcd##mcd, Mcd##mcd##Data, 128 * i, 1); \
2206                 SysPrintf("delete %s\n", ptr+0xa); \
2207                 v0 = 1; \
2208                 break; \
2209         } \
2210 }
2211
2212 /*
2213  *      int delete(char *name);
2214  */
2215
2216 void psxBios_delete() { // 45
2217         void *pa0 = Ra0;
2218         char *ptr;
2219         int i;
2220
2221 #ifdef PSXBIOS_LOG
2222         PSXBIOS_LOG("psxBios_%s: %s\n", biosB0n[0x45], Ra0);
2223 #endif
2224
2225         v0 = 0;
2226
2227         if (pa0) {
2228                 if (!strncmp(pa0, "bu00", 4)) {
2229                         budelete(1);
2230                 }
2231
2232                 if (!strncmp(pa0, "bu10", 4)) {
2233                         budelete(2);
2234                 }
2235         }
2236
2237         pc0 = ra;
2238 }
2239
2240 void psxBios_InitCARD() { // 4a
2241 #ifdef PSXBIOS_LOG
2242         PSXBIOS_LOG("psxBios_%s: %x\n", biosB0n[0x4a], a0);
2243 #endif
2244
2245         CardState = 0;
2246
2247         pc0 = ra;
2248 }
2249
2250 void psxBios_StartCARD() { // 4b
2251 #ifdef PSXBIOS_LOG
2252         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x4b]);
2253 #endif
2254
2255         if (CardState == 0) CardState = 1;
2256
2257         pc0 = ra;
2258 }
2259
2260 void psxBios_StopCARD() { // 4c
2261 #ifdef PSXBIOS_LOG
2262         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x4c]);
2263 #endif
2264
2265         if (CardState == 1) CardState = 0;
2266
2267         pc0 = ra;
2268 }
2269
2270 void psxBios__card_write() { // 0x4e
2271         void *pa2 = Ra2;
2272         int port;
2273
2274 #ifdef PSXBIOS_LOG
2275         PSXBIOS_LOG("psxBios_%s: %x,%x,%x\n", biosB0n[0x4e], a0, a1, a2);
2276 #endif
2277         /* Function also accepts sector 400h (a bug) */
2278         if (!(a1 <= 0x400))
2279         {
2280                 /* Invalid sectors */
2281                 v0 = 0; pc0 = ra;
2282                 return;
2283         }
2284         card_active_chan = a0;
2285         port = a0 >> 4;
2286
2287         if (pa2) {
2288                 if (port == 0) {
2289                         memcpy(Mcd1Data + a1 * 128, pa2, 128);
2290                         SaveMcd(Config.Mcd1, Mcd1Data, a1 * 128, 128);
2291                 } else {
2292                         memcpy(Mcd2Data + a1 * 128, pa2, 128);
2293                         SaveMcd(Config.Mcd2, Mcd2Data, a1 * 128, 128);
2294                 }
2295         }
2296
2297         DeliverEvent(0x11, 0x2); // 0xf0000011, 0x0004
2298 //      DeliverEvent(0x81, 0x2); // 0xf4000001, 0x0004
2299
2300         v0 = 1; pc0 = ra;
2301 }
2302
2303 void psxBios__card_read() { // 0x4f
2304         void *pa2 = Ra2;
2305         int port;
2306
2307 #ifdef PSXBIOS_LOG
2308         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x4f]);
2309 #endif
2310         /* Function also accepts sector 400h (a bug) */
2311         if (!(a1 <= 0x400))
2312         {
2313                 /* Invalid sectors */
2314                 v0 = 0; pc0 = ra;
2315                 return;
2316         }
2317         card_active_chan = a0;
2318         port = a0 >> 4;
2319
2320         if (pa2) {
2321                 if (port == 0) {
2322                         memcpy(pa2, Mcd1Data + a1 * 128, 128);
2323                 } else {
2324                         memcpy(pa2, Mcd2Data + a1 * 128, 128);
2325                 }
2326         }
2327
2328         DeliverEvent(0x11, 0x2); // 0xf0000011, 0x0004
2329 //      DeliverEvent(0x81, 0x2); // 0xf4000001, 0x0004
2330
2331         v0 = 1; pc0 = ra;
2332 }
2333
2334 void psxBios__new_card() { // 0x50
2335 #ifdef PSXBIOS_LOG
2336         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x50]);
2337 #endif
2338
2339         pc0 = ra;
2340 }
2341
2342 void psxBios_Krom2RawAdd() { // 0x51
2343         int i = 0;
2344
2345         const u32 table_8140[][2] = {
2346                 {0x8140, 0x0000}, {0x8180, 0x0762}, {0x81ad, 0x0cc6}, {0x81b8, 0x0ca8},
2347                 {0x81c0, 0x0f00}, {0x81c8, 0x0d98}, {0x81cf, 0x10c2}, {0x81da, 0x0e6a},
2348                 {0x81e9, 0x13ce}, {0x81f0, 0x102c}, {0x81f8, 0x1590}, {0x81fc, 0x111c},
2349                 {0x81fd, 0x1626}, {0x824f, 0x113a}, {0x8259, 0x20ee}, {0x8260, 0x1266},
2350                 {0x827a, 0x24cc}, {0x8281, 0x1572}, {0x829b, 0x28aa}, {0x829f, 0x187e},
2351                 {0x82f2, 0x32dc}, {0x8340, 0x2238}, {0x837f, 0x4362}, {0x8380, 0x299a},
2352                 {0x8397, 0x4632}, {0x839f, 0x2c4c}, {0x83b7, 0x49f2}, {0x83bf, 0x2f1c},
2353                 {0x83d7, 0x4db2}, {0x8440, 0x31ec}, {0x8461, 0x5dde}, {0x8470, 0x35ca},
2354                 {0x847f, 0x6162}, {0x8480, 0x378c}, {0x8492, 0x639c}, {0x849f, 0x39a8},
2355                 {0xffff, 0}
2356         };
2357
2358         const u32 table_889f[][2] = {
2359                 {0x889f, 0x3d68},  {0x8900, 0x40ec},  {0x897f, 0x4fb0},  {0x8a00, 0x56f4},
2360                 {0x8a7f, 0x65b8},  {0x8b00, 0x6cfc},  {0x8b7f, 0x7bc0},  {0x8c00, 0x8304},
2361                 {0x8c7f, 0x91c8},  {0x8d00, 0x990c},  {0x8d7f, 0xa7d0},  {0x8e00, 0xaf14},
2362                 {0x8e7f, 0xbdd8},  {0x8f00, 0xc51c},  {0x8f7f, 0xd3e0},  {0x9000, 0xdb24},
2363                 {0x907f, 0xe9e8},  {0x9100, 0xf12c},  {0x917f, 0xfff0},  {0x9200, 0x10734},
2364                 {0x927f, 0x115f8}, {0x9300, 0x11d3c}, {0x937f, 0x12c00}, {0x9400, 0x13344},
2365                 {0x947f, 0x14208}, {0x9500, 0x1494c}, {0x957f, 0x15810}, {0x9600, 0x15f54},
2366                 {0x967f, 0x16e18}, {0x9700, 0x1755c}, {0x977f, 0x18420}, {0x9800, 0x18b64},
2367                 {0xffff, 0}
2368         };
2369
2370         if (a0 >= 0x8140 && a0 <= 0x84be) {
2371                 while (table_8140[i][0] <= a0) i++;
2372                 a0 -= table_8140[i - 1][0];
2373                 v0 = 0xbfc66000 + (a0 * 0x1e + table_8140[i - 1][1]);
2374         } else if (a0 >= 0x889f && a0 <= 0x9872) {
2375                 while (table_889f[i][0] <= a0) i++;
2376                 a0 -= table_889f[i - 1][0];
2377                 v0 = 0xbfc66000 + (a0 * 0x1e + table_889f[i - 1][1]);
2378         } else {
2379                 v0 = 0xffffffff;
2380         }
2381
2382         pc0 = ra;
2383 }
2384
2385 void psxBios_GetC0Table() { // 56
2386 #ifdef PSXBIOS_LOG
2387         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x56]);
2388 #endif
2389
2390         v0 = 0x674; pc0 = ra;
2391 }
2392
2393 void psxBios_GetB0Table() { // 57
2394 #ifdef PSXBIOS_LOG
2395         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x57]);
2396 #endif
2397
2398         v0 = 0x874; pc0 = ra;
2399 }
2400
2401 void psxBios__card_chan() { // 0x58
2402 #ifdef PSXBIOS_LOG
2403         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x58]);
2404 #endif
2405
2406         v0 = card_active_chan;
2407         pc0 = ra;
2408 }
2409
2410 void psxBios_ChangeClearPad() { // 5b
2411 #ifdef PSXBIOS_LOG
2412         PSXBIOS_LOG("psxBios_%s: %x\n", biosB0n[0x5b], a0);
2413 #endif
2414
2415         pc0 = ra;
2416 }
2417
2418 /* System calls C0 */
2419
2420 /*
2421  * int SysEnqIntRP(int index , long *queue);
2422  */
2423
2424 void psxBios_SysEnqIntRP() { // 02
2425 #ifdef PSXBIOS_LOG
2426         PSXBIOS_LOG("psxBios_%s: %x\n", biosC0n[0x02] ,a0);
2427 #endif
2428
2429         SysIntRP[a0] = a1;
2430
2431         v0 = 0; pc0 = ra;
2432 }
2433
2434 /*
2435  * int SysDeqIntRP(int index , long *queue);
2436  */
2437
2438 void psxBios_SysDeqIntRP() { // 03
2439 #ifdef PSXBIOS_LOG
2440         PSXBIOS_LOG("psxBios_%s: %x\n", biosC0n[0x03], a0);
2441 #endif
2442
2443         SysIntRP[a0] = 0;
2444
2445         v0 = 0; pc0 = ra;
2446 }
2447
2448 void psxBios_ChangeClearRCnt() { // 0a
2449         u32 *ptr;
2450
2451 #ifdef PSXBIOS_LOG
2452         PSXBIOS_LOG("psxBios_%s: %x, %x\n", biosC0n[0x0a], a0, a1);
2453 #endif
2454
2455         ptr = (u32*)PSXM((a0 << 2) + 0x8600);
2456         v0 = *ptr;
2457         *ptr = a1;
2458
2459 //      psxRegs.CP0.n.Status|= 0x404;
2460         pc0 = ra;
2461 }
2462
2463 void psxBios_dummy() {
2464 #ifdef PSXBIOS_LOG
2465         PSXBIOS_LOG("unk %x call: %x\n", pc0 & 0x1fffff, t1);
2466 #endif
2467         pc0 = ra;
2468 }
2469
2470 void (*biosA0[256])();
2471 void (*biosB0[256])();
2472 void (*biosC0[256])();
2473
2474 #include "sjisfont.h"
2475
2476 void psxBiosInit() {
2477         u32 base, size;
2478         u32 *ptr;
2479         int i;
2480         uLongf len;
2481
2482         for(i = 0; i < 256; i++) {
2483                 biosA0[i] = NULL;
2484                 biosB0[i] = NULL;
2485                 biosC0[i] = NULL;
2486         }
2487         biosA0[0x3e] = psxBios_puts;
2488         biosA0[0x3f] = psxBios_printf;
2489
2490         biosB0[0x3d] = psxBios_putchar;
2491         biosB0[0x3f] = psxBios_puts;
2492
2493         if (!Config.HLE) return;
2494
2495         for(i = 0; i < 256; i++) {
2496                 if (biosA0[i] == NULL) biosA0[i] = psxBios_dummy;
2497                 if (biosB0[i] == NULL) biosB0[i] = psxBios_dummy;
2498                 if (biosC0[i] == NULL) biosC0[i] = psxBios_dummy;
2499         }
2500
2501         biosA0[0x00] = psxBios_open;
2502         biosA0[0x01] = psxBios_lseek;
2503         biosA0[0x02] = psxBios_read;
2504         biosA0[0x03] = psxBios_write;
2505         biosA0[0x04] = psxBios_close;
2506         //biosA0[0x05] = psxBios_ioctl;
2507         //biosA0[0x06] = psxBios_exit;
2508         //biosA0[0x07] = psxBios_sys_a0_07;
2509         biosA0[0x08] = psxBios_getc;
2510         biosA0[0x09] = psxBios_putc;
2511         biosA0[0x0a] = psxBios_todigit;
2512         //biosA0[0x0b] = psxBios_atof;
2513         //biosA0[0x0c] = psxBios_strtoul;
2514         //biosA0[0x0d] = psxBios_strtol;
2515         biosA0[0x0e] = psxBios_abs;
2516         biosA0[0x0f] = psxBios_labs;
2517         biosA0[0x10] = psxBios_atoi;
2518         biosA0[0x11] = psxBios_atol;
2519         //biosA0[0x12] = psxBios_atob;
2520         biosA0[0x13] = psxBios_setjmp;
2521         biosA0[0x14] = psxBios_longjmp;
2522         biosA0[0x15] = psxBios_strcat;
2523         biosA0[0x16] = psxBios_strncat;
2524         biosA0[0x17] = psxBios_strcmp;
2525         biosA0[0x18] = psxBios_strncmp;
2526         biosA0[0x19] = psxBios_strcpy;
2527         biosA0[0x1a] = psxBios_strncpy;
2528         biosA0[0x1b] = psxBios_strlen;
2529         biosA0[0x1c] = psxBios_index;
2530         biosA0[0x1d] = psxBios_rindex;
2531         biosA0[0x1e] = psxBios_strchr;
2532         biosA0[0x1f] = psxBios_strrchr;
2533         biosA0[0x20] = psxBios_strpbrk;
2534         biosA0[0x21] = psxBios_strspn;
2535         biosA0[0x22] = psxBios_strcspn;
2536         biosA0[0x23] = psxBios_strtok;
2537         biosA0[0x24] = psxBios_strstr;
2538         biosA0[0x25] = psxBios_toupper;
2539         biosA0[0x26] = psxBios_tolower;
2540         biosA0[0x27] = psxBios_bcopy;
2541         biosA0[0x28] = psxBios_bzero;
2542         biosA0[0x29] = psxBios_bcmp;
2543         biosA0[0x2a] = psxBios_memcpy;
2544         biosA0[0x2b] = psxBios_memset;
2545         biosA0[0x2c] = psxBios_memmove;
2546         biosA0[0x2d] = psxBios_memcmp;
2547         biosA0[0x2e] = psxBios_memchr;
2548         biosA0[0x2f] = psxBios_rand;
2549         biosA0[0x30] = psxBios_srand;
2550         biosA0[0x31] = psxBios_qsort;
2551         //biosA0[0x32] = psxBios_strtod;
2552         biosA0[0x33] = psxBios_malloc;
2553         biosA0[0x34] = psxBios_free;
2554         //biosA0[0x35] = psxBios_lsearch;
2555         //biosA0[0x36] = psxBios_bsearch;
2556         biosA0[0x37] = psxBios_calloc;
2557         biosA0[0x38] = psxBios_realloc;
2558         biosA0[0x39] = psxBios_InitHeap;
2559         //biosA0[0x3a] = psxBios__exit;
2560         biosA0[0x3b] = psxBios_getchar;
2561         biosA0[0x3c] = psxBios_putchar;
2562         //biosA0[0x3d] = psxBios_gets;
2563         //biosA0[0x40] = psxBios_sys_a0_40;
2564         //biosA0[0x41] = psxBios_LoadTest;
2565         biosA0[0x42] = psxBios_Load;
2566         biosA0[0x43] = psxBios_Exec;
2567         biosA0[0x44] = psxBios_FlushCache;
2568         //biosA0[0x45] = psxBios_InstallInterruptHandler;
2569         biosA0[0x46] = psxBios_GPU_dw;
2570         biosA0[0x47] = psxBios_mem2vram;
2571         biosA0[0x48] = psxBios_SendGPU;
2572         biosA0[0x49] = psxBios_GPU_cw;
2573         biosA0[0x4a] = psxBios_GPU_cwb;
2574         biosA0[0x4b] = psxBios_GPU_SendPackets;
2575         biosA0[0x4c] = psxBios_sys_a0_4c;
2576         biosA0[0x4d] = psxBios_GPU_GetGPUStatus;
2577         //biosA0[0x4e] = psxBios_GPU_sync;
2578         //biosA0[0x4f] = psxBios_sys_a0_4f;
2579         //biosA0[0x50] = psxBios_sys_a0_50;
2580         biosA0[0x51] = psxBios_LoadExec;
2581         //biosA0[0x52] = psxBios_GetSysSp;
2582         //biosA0[0x53] = psxBios_sys_a0_53;
2583         //biosA0[0x54] = psxBios__96_init_a54;
2584         //biosA0[0x55] = psxBios__bu_init_a55;
2585         //biosA0[0x56] = psxBios__96_remove_a56;
2586         //biosA0[0x57] = psxBios_sys_a0_57;
2587         //biosA0[0x58] = psxBios_sys_a0_58;
2588         //biosA0[0x59] = psxBios_sys_a0_59;
2589         //biosA0[0x5a] = psxBios_sys_a0_5a;
2590         //biosA0[0x5b] = psxBios_dev_tty_init;
2591         //biosA0[0x5c] = psxBios_dev_tty_open;
2592         //biosA0[0x5d] = psxBios_sys_a0_5d;
2593         //biosA0[0x5e] = psxBios_dev_tty_ioctl;
2594         //biosA0[0x5f] = psxBios_dev_cd_open;
2595         //biosA0[0x60] = psxBios_dev_cd_read;
2596         //biosA0[0x61] = psxBios_dev_cd_close;
2597         //biosA0[0x62] = psxBios_dev_cd_firstfile;
2598         //biosA0[0x63] = psxBios_dev_cd_nextfile;
2599         //biosA0[0x64] = psxBios_dev_cd_chdir;
2600         //biosA0[0x65] = psxBios_dev_card_open;
2601         //biosA0[0x66] = psxBios_dev_card_read;
2602         //biosA0[0x67] = psxBios_dev_card_write;
2603         //biosA0[0x68] = psxBios_dev_card_close;
2604         //biosA0[0x69] = psxBios_dev_card_firstfile;
2605         //biosA0[0x6a] = psxBios_dev_card_nextfile;
2606         //biosA0[0x6b] = psxBios_dev_card_erase;
2607         //biosA0[0x6c] = psxBios_dev_card_undelete;
2608         //biosA0[0x6d] = psxBios_dev_card_format;
2609         //biosA0[0x6e] = psxBios_dev_card_rename;
2610         //biosA0[0x6f] = psxBios_dev_card_6f;
2611         biosA0[0x70] = psxBios__bu_init;
2612         biosA0[0x71] = psxBios__96_init;
2613         biosA0[0x72] = psxBios__96_remove;
2614         //biosA0[0x73] = psxBios_sys_a0_73;
2615         //biosA0[0x74] = psxBios_sys_a0_74;
2616         //biosA0[0x75] = psxBios_sys_a0_75;
2617         //biosA0[0x76] = psxBios_sys_a0_76;
2618         //biosA0[0x77] = psxBios_sys_a0_77;
2619         //biosA0[0x78] = psxBios__96_CdSeekL;
2620         //biosA0[0x79] = psxBios_sys_a0_79;
2621         //biosA0[0x7a] = psxBios_sys_a0_7a;
2622         //biosA0[0x7b] = psxBios_sys_a0_7b;
2623         //biosA0[0x7c] = psxBios__96_CdGetStatus;
2624         //biosA0[0x7d] = psxBios_sys_a0_7d;
2625         //biosA0[0x7e] = psxBios__96_CdRead;
2626         //biosA0[0x7f] = psxBios_sys_a0_7f;
2627         //biosA0[0x80] = psxBios_sys_a0_80;
2628         //biosA0[0x81] = psxBios_sys_a0_81;
2629         //biosA0[0x82] = psxBios_sys_a0_82;
2630         //biosA0[0x83] = psxBios_sys_a0_83;
2631         //biosA0[0x84] = psxBios_sys_a0_84;
2632         //biosA0[0x85] = psxBios__96_CdStop;
2633         //biosA0[0x86] = psxBios_sys_a0_86;
2634         //biosA0[0x87] = psxBios_sys_a0_87;
2635         //biosA0[0x88] = psxBios_sys_a0_88;
2636         //biosA0[0x89] = psxBios_sys_a0_89;
2637         //biosA0[0x8a] = psxBios_sys_a0_8a;
2638         //biosA0[0x8b] = psxBios_sys_a0_8b;
2639         //biosA0[0x8c] = psxBios_sys_a0_8c;
2640         //biosA0[0x8d] = psxBios_sys_a0_8d;
2641         //biosA0[0x8e] = psxBios_sys_a0_8e;
2642         //biosA0[0x8f] = psxBios_sys_a0_8f;
2643         //biosA0[0x90] = psxBios_sys_a0_90;
2644         //biosA0[0x91] = psxBios_sys_a0_91;
2645         //biosA0[0x92] = psxBios_sys_a0_92;
2646         //biosA0[0x93] = psxBios_sys_a0_93;
2647         //biosA0[0x94] = psxBios_sys_a0_94;
2648         //biosA0[0x95] = psxBios_sys_a0_95;
2649         //biosA0[0x96] = psxBios_AddCDROMDevice;
2650         //biosA0[0x97] = psxBios_AddMemCardDevide;
2651         //biosA0[0x98] = psxBios_DisableKernelIORedirection;
2652         //biosA0[0x99] = psxBios_EnableKernelIORedirection;
2653         //biosA0[0x9a] = psxBios_sys_a0_9a;
2654         //biosA0[0x9b] = psxBios_sys_a0_9b;
2655         //biosA0[0x9c] = psxBios_SetConf;
2656         //biosA0[0x9d] = psxBios_GetConf;
2657         //biosA0[0x9e] = psxBios_sys_a0_9e;
2658         biosA0[0x9f] = psxBios_SetMem;
2659         //biosA0[0xa0] = psxBios__boot;
2660         //biosA0[0xa1] = psxBios_SystemError;
2661         //biosA0[0xa2] = psxBios_EnqueueCdIntr;
2662         //biosA0[0xa3] = psxBios_DequeueCdIntr;
2663         //biosA0[0xa4] = psxBios_sys_a0_a4;
2664         //biosA0[0xa5] = psxBios_ReadSector;
2665         //biosA0[0xa6] = psxBios_get_cd_status;
2666         //biosA0[0xa7] = psxBios_bufs_cb_0;
2667         //biosA0[0xa8] = psxBios_bufs_cb_1;
2668         //biosA0[0xa9] = psxBios_bufs_cb_2;
2669         //biosA0[0xaa] = psxBios_bufs_cb_3;
2670         biosA0[0xab] = psxBios__card_info;
2671         biosA0[0xac] = psxBios__card_load;
2672         //biosA0[0axd] = psxBios__card_auto;
2673         //biosA0[0xae] = psxBios_bufs_cd_4;
2674         //biosA0[0xaf] = psxBios_sys_a0_af;
2675         //biosA0[0xb0] = psxBios_sys_a0_b0;
2676         //biosA0[0xb1] = psxBios_sys_a0_b1;
2677         //biosA0[0xb2] = psxBios_do_a_long_jmp
2678         //biosA0[0xb3] = psxBios_sys_a0_b3;
2679         //biosA0[0xb4] = psxBios_sub_function;
2680 //*******************B0 CALLS****************************
2681         //biosB0[0x00] = psxBios_SysMalloc;
2682         //biosB0[0x01] = psxBios_sys_b0_01;
2683         biosB0[0x02] = psxBios_SetRCnt;
2684         biosB0[0x03] = psxBios_GetRCnt;
2685         biosB0[0x04] = psxBios_StartRCnt;
2686         biosB0[0x05] = psxBios_StopRCnt;
2687         biosB0[0x06] = psxBios_ResetRCnt;
2688         biosB0[0x07] = psxBios_DeliverEvent;
2689         biosB0[0x08] = psxBios_OpenEvent;
2690         biosB0[0x09] = psxBios_CloseEvent;
2691         biosB0[0x0a] = psxBios_WaitEvent;
2692         biosB0[0x0b] = psxBios_TestEvent;
2693         biosB0[0x0c] = psxBios_EnableEvent;
2694         biosB0[0x0d] = psxBios_DisableEvent;
2695         biosB0[0x0e] = psxBios_OpenTh;
2696         biosB0[0x0f] = psxBios_CloseTh;
2697         biosB0[0x10] = psxBios_ChangeTh;
2698         //biosB0[0x11] = psxBios_psxBios_b0_11;
2699         biosB0[0x12] = psxBios_InitPAD;
2700         biosB0[0x13] = psxBios_StartPAD;
2701         biosB0[0x14] = psxBios_StopPAD;
2702         biosB0[0x15] = psxBios_PAD_init;
2703         biosB0[0x16] = psxBios_PAD_dr;
2704         biosB0[0x17] = psxBios_ReturnFromException;
2705         biosB0[0x18] = psxBios_ResetEntryInt;
2706         biosB0[0x19] = psxBios_HookEntryInt;
2707         //biosB0[0x1a] = psxBios_sys_b0_1a;
2708         //biosB0[0x1b] = psxBios_sys_b0_1b;
2709         //biosB0[0x1c] = psxBios_sys_b0_1c;
2710         //biosB0[0x1d] = psxBios_sys_b0_1d;
2711         //biosB0[0x1e] = psxBios_sys_b0_1e;
2712         //biosB0[0x1f] = psxBios_sys_b0_1f;
2713         biosB0[0x20] = psxBios_UnDeliverEvent;
2714         //biosB0[0x21] = psxBios_sys_b0_21;
2715         //biosB0[0x22] = psxBios_sys_b0_22;
2716         //biosB0[0x23] = psxBios_sys_b0_23;
2717         //biosB0[0x24] = psxBios_sys_b0_24;
2718         //biosB0[0x25] = psxBios_sys_b0_25;
2719         //biosB0[0x26] = psxBios_sys_b0_26;
2720         //biosB0[0x27] = psxBios_sys_b0_27;
2721         //biosB0[0x28] = psxBios_sys_b0_28;
2722         //biosB0[0x29] = psxBios_sys_b0_29;
2723         //biosB0[0x2a] = psxBios_sys_b0_2a;
2724         //biosB0[0x2b] = psxBios_sys_b0_2b;
2725         //biosB0[0x2c] = psxBios_sys_b0_2c;
2726         //biosB0[0x2d] = psxBios_sys_b0_2d;
2727         //biosB0[0x2e] = psxBios_sys_b0_2e;
2728         //biosB0[0x2f] = psxBios_sys_b0_2f;
2729         //biosB0[0x30] = psxBios_sys_b0_30;
2730         //biosB0[0x31] = psxBios_sys_b0_31;
2731         biosB0[0x32] = psxBios_open;
2732         biosB0[0x33] = psxBios_lseek;
2733         biosB0[0x34] = psxBios_read;
2734         biosB0[0x35] = psxBios_write;
2735         biosB0[0x36] = psxBios_close;
2736         //biosB0[0x37] = psxBios_ioctl;
2737         //biosB0[0x38] = psxBios_exit;
2738         //biosB0[0x39] = psxBios_sys_b0_39;
2739         //biosB0[0x3a] = psxBios_getc;
2740         //biosB0[0x3b] = psxBios_putc;
2741         biosB0[0x3c] = psxBios_getchar;
2742         //biosB0[0x3e] = psxBios_gets;
2743         //biosB0[0x40] = psxBios_cd;
2744         biosB0[0x41] = psxBios_format;
2745         biosB0[0x42] = psxBios_firstfile;
2746         biosB0[0x43] = psxBios_nextfile;
2747         biosB0[0x44] = psxBios_rename;
2748         biosB0[0x45] = psxBios_delete;
2749         //biosB0[0x46] = psxBios_undelete;
2750         //biosB0[0x47] = psxBios_AddDevice;
2751         //biosB0[0x48] = psxBios_RemoteDevice;
2752         //biosB0[0x49] = psxBios_PrintInstalledDevices;
2753         biosB0[0x4a] = psxBios_InitCARD;
2754         biosB0[0x4b] = psxBios_StartCARD;
2755         biosB0[0x4c] = psxBios_StopCARD;
2756         //biosB0[0x4d] = psxBios_sys_b0_4d;
2757         biosB0[0x4e] = psxBios__card_write;
2758         biosB0[0x4f] = psxBios__card_read;
2759         biosB0[0x50] = psxBios__new_card;
2760         biosB0[0x51] = psxBios_Krom2RawAdd;
2761         //biosB0[0x52] = psxBios_sys_b0_52;
2762         //biosB0[0x53] = psxBios_sys_b0_53;
2763         //biosB0[0x54] = psxBios__get_errno;
2764         //biosB0[0x55] = psxBios__get_error;
2765         biosB0[0x56] = psxBios_GetC0Table;
2766         biosB0[0x57] = psxBios_GetB0Table;
2767         biosB0[0x58] = psxBios__card_chan;
2768         //biosB0[0x59] = psxBios_sys_b0_59;
2769         //biosB0[0x5a] = psxBios_sys_b0_5a;
2770         biosB0[0x5b] = psxBios_ChangeClearPad;
2771         //biosB0[0x5c] = psxBios__card_status;
2772         //biosB0[0x5d] = psxBios__card_wait;
2773 //*******************C0 CALLS****************************
2774         //biosC0[0x00] = psxBios_InitRCnt;
2775         //biosC0[0x01] = psxBios_InitException;
2776         biosC0[0x02] = psxBios_SysEnqIntRP;
2777         biosC0[0x03] = psxBios_SysDeqIntRP;
2778         //biosC0[0x04] = psxBios_get_free_EvCB_slot;
2779         //biosC0[0x05] = psxBios_get_free_TCB_slot;
2780         //biosC0[0x06] = psxBios_ExceptionHandler;
2781         //biosC0[0x07] = psxBios_InstallExeptionHandler;
2782         //biosC0[0x08] = psxBios_SysInitMemory;
2783         //biosC0[0x09] = psxBios_SysInitKMem;
2784         biosC0[0x0a] = psxBios_ChangeClearRCnt;
2785         //biosC0[0x0b] = psxBios_SystemError;
2786         //biosC0[0x0c] = psxBios_InitDefInt;
2787         //biosC0[0x0d] = psxBios_sys_c0_0d;
2788         //biosC0[0x0e] = psxBios_sys_c0_0e;
2789         //biosC0[0x0f] = psxBios_sys_c0_0f;
2790         //biosC0[0x10] = psxBios_sys_c0_10;
2791         //biosC0[0x11] = psxBios_sys_c0_11;
2792         //biosC0[0x12] = psxBios_InstallDevices;
2793         //biosC0[0x13] = psxBios_FlushStfInOutPut;
2794         //biosC0[0x14] = psxBios_sys_c0_14;
2795         //biosC0[0x15] = psxBios__cdevinput;
2796         //biosC0[0x16] = psxBios__cdevscan;
2797         //biosC0[0x17] = psxBios__circgetc;
2798         //biosC0[0x18] = psxBios__circputc;
2799         //biosC0[0x19] = psxBios_ioabort;
2800         //biosC0[0x1a] = psxBios_sys_c0_1a
2801         //biosC0[0x1b] = psxBios_KernelRedirect;
2802         //biosC0[0x1c] = psxBios_PatchAOTable;
2803 //************** THE END ***************************************
2804 /**/
2805         base = 0x1000;
2806         size = sizeof(EvCB) * 32;
2807         Event = (void *)&psxR[base]; base += size * 6;
2808         memset(Event, 0, size * 6);
2809         HwEV = Event;
2810         EvEV = Event + 32;
2811         RcEV = Event + 32 * 2;
2812         UeEV = Event + 32 * 3;
2813         SwEV = Event + 32 * 4;
2814         ThEV = Event + 32 * 5;
2815
2816         ptr = (u32 *)&psxM[0x0874]; // b0 table
2817         ptr[0] = SWAPu32(0x4c54 - 0x884);
2818
2819         ptr = (u32 *)&psxM[0x0674]; // c0 table
2820         ptr[6] = SWAPu32(0xc80);
2821
2822         memset(SysIntRP, 0, sizeof(SysIntRP));
2823         memset(Thread, 0, sizeof(Thread));
2824         Thread[0].status = 2; // main thread
2825
2826         jmp_int = NULL;
2827         pad_buf = NULL;
2828         pad_buf1 = NULL;
2829         pad_buf2 = NULL;
2830         pad_buf1len = pad_buf2len = 0;
2831         heap_addr = NULL;
2832         heap_end = NULL;
2833         CardState = -1;
2834         CurThread = 0;
2835         memset(FDesc, 0, sizeof(FDesc));
2836
2837         psxMu32ref(0x0150) = SWAPu32(0x160);
2838         psxMu32ref(0x0154) = SWAPu32(0x320);
2839         psxMu32ref(0x0160) = SWAPu32(0x248);
2840         strcpy((char *)&psxM[0x248], "bu");
2841 /*      psxMu32ref(0x0ca8) = SWAPu32(0x1f410004);
2842         psxMu32ref(0x0cf0) = SWAPu32(0x3c020000);
2843         psxMu32ref(0x0cf4) = SWAPu32(0x2442641c);
2844         psxMu32ref(0x09e0) = SWAPu32(0x43d0);
2845         psxMu32ref(0x4d98) = SWAPu32(0x946f000a);
2846 */
2847         // opcode HLE
2848         psxRu32ref(0x0000) = SWAPu32((0x3b << 26) | 4);
2849         psxMu32ref(0x0000) = SWAPu32((0x3b << 26) | 0);
2850         psxMu32ref(0x00a0) = SWAPu32((0x3b << 26) | 1);
2851         psxMu32ref(0x00b0) = SWAPu32((0x3b << 26) | 2);
2852         psxMu32ref(0x00c0) = SWAPu32((0x3b << 26) | 3);
2853         psxMu32ref(0x4c54) = SWAPu32((0x3b << 26) | 0);
2854         psxMu32ref(0x8000) = SWAPu32((0x3b << 26) | 5);
2855         psxMu32ref(0x07a0) = SWAPu32((0x3b << 26) | 0);
2856         psxMu32ref(0x0884) = SWAPu32((0x3b << 26) | 0);
2857         psxMu32ref(0x0894) = SWAPu32((0x3b << 26) | 0);
2858
2859         // initial stack pointer for BIOS interrupt
2860         psxMu32ref(0x6c80) = SWAPu32(0x000085c8);
2861
2862         // initial RNG seed
2863         psxMu32ref(0x9010) = SWAPu32(0xac20cc00);
2864
2865         // fonts
2866         len = 0x80000 - 0x66000;
2867         uncompress((Bytef *)(psxR + 0x66000), &len, font_8140, sizeof(font_8140));
2868         len = 0x80000 - 0x69d68;
2869         uncompress((Bytef *)(psxR + 0x69d68), &len, font_889f, sizeof(font_889f));
2870
2871         // memory size 2 MB
2872         psxHu32ref(0x1060) = SWAPu32(0x00000b88);
2873
2874         hleSoftCall = FALSE;
2875 }
2876
2877 void psxBiosShutdown() {
2878 }
2879
2880 #define psxBios_PADpoll(pad) { \
2881         PAD##pad##_startPoll(pad); \
2882         pad_buf##pad[0] = 0; \
2883         pad_buf##pad[1] = PAD##pad##_poll(0x42); \
2884         if (!(pad_buf##pad[1] & 0x0f)) { \
2885                 bufcount = 32; \
2886         } else { \
2887                 bufcount = (pad_buf##pad[1] & 0x0f) * 2; \
2888         } \
2889         PAD##pad##_poll(0); \
2890         i = 2; \
2891         while (bufcount--) { \
2892                 pad_buf##pad[i++] = PAD##pad##_poll(0); \
2893         } \
2894 }
2895
2896 void biosInterrupt() {
2897         int i, bufcount;
2898
2899 //      if (psxHu32(0x1070) & 0x1) { // Vsync
2900                 if (pad_buf != NULL) {
2901                         u32 *buf = (u32*)pad_buf;
2902
2903                         if (!Config.UseNet) {
2904                                 PAD1_startPoll(1);
2905                                 if (PAD1_poll(0x42) == 0x23) {
2906                                         PAD1_poll(0);
2907                                         *buf = PAD1_poll(0) << 8;
2908                                         *buf |= PAD1_poll(0);
2909                                         PAD1_poll(0);
2910                                         *buf &= ~((PAD1_poll(0) > 0x20) ? 1 << 6 : 0);
2911                                         *buf &= ~((PAD1_poll(0) > 0x20) ? 1 << 7 : 0);
2912                                 } else {
2913                                         PAD1_poll(0);
2914                                         *buf = PAD1_poll(0) << 8;
2915                                         *buf|= PAD1_poll(0);
2916                                 }
2917
2918                                 PAD2_startPoll(2);
2919                                 if (PAD2_poll(0x42) == 0x23) {
2920                                         PAD2_poll(0);
2921                                         *buf |= PAD2_poll(0) << 24;
2922                                         *buf |= PAD2_poll(0) << 16;
2923                                         PAD2_poll(0);
2924                                         *buf &= ~((PAD2_poll(0) > 0x20) ? 1 << 22 : 0);
2925                                         *buf &= ~((PAD2_poll(0) > 0x20) ? 1 << 23 : 0);
2926                                 } else {
2927                                         PAD2_poll(0);
2928                                         *buf |= PAD2_poll(0) << 24;
2929                                         *buf |= PAD2_poll(0) << 16;
2930                                 }
2931                         } else {
2932                                 u16 data;
2933
2934                                 PAD1_startPoll(1);
2935                                 PAD1_poll(0x42);
2936                                 PAD1_poll(0);
2937                                 data = PAD1_poll(0) << 8;
2938                                 data |= PAD1_poll(0);
2939
2940                                 if (NET_sendPadData(&data, 2) == -1)
2941                                         netError();
2942
2943                                 if (NET_recvPadData(&((u16*)buf)[0], 1) == -1)
2944                                         netError();
2945                                 if (NET_recvPadData(&((u16*)buf)[1], 2) == -1)
2946                                         netError();
2947                         }
2948                 }
2949                 if (Config.UseNet && pad_buf1 != NULL && pad_buf2 != NULL) {
2950                         psxBios_PADpoll(1);
2951
2952                         if (NET_sendPadData(pad_buf1, i) == -1)
2953                                 netError();
2954
2955                         if (NET_recvPadData(pad_buf1, 1) == -1)
2956                                 netError();
2957                         if (NET_recvPadData(pad_buf2, 2) == -1)
2958                                 netError();
2959                 } else {
2960                         if (pad_buf1) {
2961                                 psxBios_PADpoll(1);
2962                         }
2963
2964                         if (pad_buf2) {
2965                                 psxBios_PADpoll(2);
2966                         }
2967                 }
2968
2969         if (psxHu32(0x1070) & 0x1) { // Vsync
2970                 if (RcEV[3][1].status == EvStACTIVE) {
2971                         softCall(RcEV[3][1].fhandler);
2972 //                      hwWrite32(0x1f801070, ~(1));
2973                 }
2974         }
2975
2976         if (psxHu32(0x1070) & 0x70) { // Rcnt 0,1,2
2977                 int i;
2978
2979                 for (i = 0; i < 3; i++) {
2980                         if (psxHu32(0x1070) & (1 << (i + 4))) {
2981                                 if (RcEV[i][1].status == EvStACTIVE) {
2982                                         softCall(RcEV[i][1].fhandler);
2983                                 }
2984                                 psxHwWrite32(0x1f801070, ~(1 << (i + 4)));
2985                         }
2986                 }
2987         }
2988 }
2989
2990 void psxBiosException() {
2991         int i;
2992
2993         switch (psxRegs.CP0.n.Cause & 0x3c) {
2994                 case 0x00: // Interrupt
2995 #ifdef PSXCPU_LOG
2996 //                      PSXCPU_LOG("interrupt\n");
2997 #endif
2998                         SaveRegs();
2999
3000                         sp = psxMu32(0x6c80); // create new stack for interrupt handlers
3001
3002                         biosInterrupt();
3003
3004                         for (i = 0; i < 8; i++) {
3005                                 if (SysIntRP[i]) {
3006                                         u32 *queue = (u32 *)PSXM(SysIntRP[i]);
3007
3008                                         s0 = queue[2];
3009                                         softCall(queue[1]);
3010                                 }
3011                         }
3012
3013                         if (jmp_int != NULL) {
3014                                 int i;
3015
3016                                 psxHwWrite32(0x1f801070, 0xffffffff);
3017
3018                                 ra = jmp_int[0];
3019                                 sp = jmp_int[1];
3020                                 fp = jmp_int[2];
3021                                 for (i = 0; i < 8; i++) // s0-s7
3022                                          psxRegs.GPR.r[16 + i] = jmp_int[3 + i];
3023                                 gp = jmp_int[11];
3024
3025                                 v0 = 1;
3026                                 pc0 = ra;
3027                                 return;
3028                         }
3029                         psxHwWrite16(0x1f801070, 0);
3030                         break;
3031
3032                 case 0x20: // Syscall
3033 #ifdef PSXCPU_LOG
3034                         PSXCPU_LOG("syscall exp %x\n", a0);
3035 #endif
3036                         switch (a0) {
3037                                 case 1: // EnterCritical - disable irq's
3038                                         /* Fixes Medievil 2 not loading up new game, Digimon World not booting up and possibly others */
3039                                         v0 = (psxRegs.CP0.n.Status & 0x404) == 0x404;
3040                                         psxRegs.CP0.n.Status &= ~0x404;
3041                                         break;
3042
3043                                 case 2: // ExitCritical - enable irq's
3044                                         psxRegs.CP0.n.Status |= 0x404;
3045                                         break;
3046                         }
3047                         pc0 = psxRegs.CP0.n.EPC + 4;
3048
3049                         psxRegs.CP0.n.Status = (psxRegs.CP0.n.Status & 0xfffffff0) |
3050                                                                   ((psxRegs.CP0.n.Status & 0x3c) >> 2);
3051                         return;
3052
3053                 default:
3054 #ifdef PSXCPU_LOG
3055                         PSXCPU_LOG("unknown bios exception!\n");
3056 #endif
3057                         break;
3058         }
3059
3060         pc0 = psxRegs.CP0.n.EPC;
3061         if (psxRegs.CP0.n.Cause & 0x80000000) pc0+=4;
3062
3063         psxRegs.CP0.n.Status = (psxRegs.CP0.n.Status & 0xfffffff0) |
3064                                                   ((psxRegs.CP0.n.Status & 0x3c) >> 2);
3065 }
3066
3067 #define bfreeze(ptr, size) { \
3068         if (Mode == 1) memcpy(&psxR[base], ptr, size); \
3069         if (Mode == 0) memcpy(ptr, &psxR[base], size); \
3070         base += size; \
3071 }
3072
3073 #define bfreezes(ptr) bfreeze(ptr, sizeof(ptr))
3074 #define bfreezel(ptr) bfreeze(ptr, sizeof(*ptr))
3075
3076 #define bfreezepsxMptr(ptr, type) { \
3077         if (Mode == 1) { \
3078                 if (ptr) psxRu32ref(base) = SWAPu32((s8 *)(ptr) - psxM); \
3079                 else psxRu32ref(base) = 0; \
3080         } else { \
3081                 if (psxRu32(base) != 0) ptr = (type *)(psxM + psxRu32(base)); \
3082                 else (ptr) = NULL; \
3083         } \
3084         base += sizeof(u32); \
3085 }
3086
3087 void psxBiosFreeze(int Mode) {
3088         u32 base = 0x40000;
3089
3090         bfreezepsxMptr(jmp_int, u32);
3091         bfreezepsxMptr(pad_buf, int);
3092         bfreezepsxMptr(pad_buf1, char);
3093         bfreezepsxMptr(pad_buf2, char);
3094         bfreezepsxMptr(heap_addr, u32);
3095         bfreezel(&pad_buf1len);
3096         bfreezel(&pad_buf2len);
3097         bfreezes(regs);
3098         bfreezes(SysIntRP);
3099         bfreezel(&CardState);
3100         bfreezes(Thread);
3101         bfreezel(&CurThread);
3102         bfreezes(FDesc);
3103         bfreezel(&card_active_chan);
3104 }