libpcsxcore/psxbios.c

   1 /***************************************************************************
   2  *   Copyright (C) 2019 Ryan Schultz, PCSX-df Team, PCSX team, gameblabla, *
   3  *       dmitrysmagin, senquack                                                                                            *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   51 Franklin Street, Fifth Floor, Boston, MA 02111-1307 USA.           *
  19  ***************************************************************************/
  20
  21 /* Gameblabla 2018-2019 :
  22  * Numerous changes to bios calls as well as improvements in order to conform to nocash's findings
  23  * for the PSX bios calls. Thanks senquack for helping out with some of the changes
  24  * and helping to spot issues and refine my patches.
  25  * */
  26
  27 /*
  28  * Internal simulated HLE BIOS.
  29  */
  30
  31 // TODO: implement all system calls, count the exact CPU cycles of system calls.
  32
  33 #include "psxbios.h"
  34 #include "psxhw.h"
  35 #include "gpu.h"
  36 #include <zlib.h>
  37
  38 #undef SysPrintf
  39 #define SysPrintf if (Config.PsxOut) printf
  40
  41 char *biosA0n[256] = {
  42 // 0x00
  43         "open",         "lseek",        "read",         "write",
  44         "close",        "ioctl",        "exit",         "sys_a0_07",
  45         "getc",         "putc",         "todigit",      "atof",
  46         "strtoul",      "strtol",       "abs",          "labs",
  47 // 0x10
  48         "atoi",         "atol",         "atob",         "setjmp",
  49         "longjmp",      "strcat",       "strncat",      "strcmp",
  50         "strncmp",      "strcpy",       "strncpy",      "strlen",
  51         "index",        "rindex",       "strchr",       "strrchr",
  52 // 0x20
  53         "strpbrk",      "strspn",       "strcspn",      "strtok",
  54         "strstr",       "toupper",      "tolower",      "bcopy",
  55         "bzero",        "bcmp",         "memcpy",       "memset",
  56         "memmove",      "memcmp",       "memchr",       "rand",
  57 // 0x30
  58         "srand",        "qsort",        "strtod",       "malloc",
  59         "free",         "lsearch",      "bsearch",      "calloc",
  60         "realloc",      "InitHeap",     "_exit",        "getchar",
  61         "putchar",      "gets",         "puts",         "printf",
  62 // 0x40
  63         "sys_a0_40",            "LoadTest",                                     "Load",         "Exec",
  64         "FlushCache",           "InstallInterruptHandler",      "GPU_dw",       "mem2vram",
  65         "SendGPUStatus",        "GPU_cw",                                       "GPU_cwb",      "SendPackets",
  66         "sys_a0_4c",            "GetGPUStatus",                         "GPU_sync",     "sys_a0_4f",
  67 // 0x50
  68         "sys_a0_50",            "LoadExec",                             "GetSysSp",             "sys_a0_53",
  69         "_96_init()",           "_bu_init()",                   "_96_remove()", "sys_a0_57",
  70         "sys_a0_58",            "sys_a0_59",                    "sys_a0_5a",    "dev_tty_init",
  71         "dev_tty_open",         "sys_a0_5d",                    "dev_tty_ioctl","dev_cd_open",
  72 // 0x60
  73         "dev_cd_read",          "dev_cd_close",                 "dev_cd_firstfile",     "dev_cd_nextfile",
  74         "dev_cd_chdir",         "dev_card_open",                "dev_card_read",        "dev_card_write",
  75         "dev_card_close",       "dev_card_firstfile",   "dev_card_nextfile","dev_card_erase",
  76         "dev_card_undelete","dev_card_format",          "dev_card_rename",      "dev_card_6f",
  77 // 0x70
  78         "_bu_init",                     "_96_init",             "_96_remove",           "sys_a0_73",
  79         "sys_a0_74",            "sys_a0_75",    "sys_a0_76",            "sys_a0_77",
  80         "_96_CdSeekL",          "sys_a0_79",    "sys_a0_7a",            "sys_a0_7b",
  81         "_96_CdGetStatus",      "sys_a0_7d",    "_96_CdRead",           "sys_a0_7f",
  82 // 0x80
  83         "sys_a0_80",            "sys_a0_81",    "sys_a0_82",            "sys_a0_83",
  84         "sys_a0_84",            "_96_CdStop",   "sys_a0_86",            "sys_a0_87",
  85         "sys_a0_88",            "sys_a0_89",    "sys_a0_8a",            "sys_a0_8b",
  86         "sys_a0_8c",            "sys_a0_8d",    "sys_a0_8e",            "sys_a0_8f",
  87 // 0x90
  88         "sys_a0_90",            "sys_a0_91",    "sys_a0_92",            "sys_a0_93",
  89         "sys_a0_94",            "sys_a0_95",    "AddCDROMDevice",       "AddMemCardDevide",
  90         "DisableKernelIORedirection",           "EnableKernelIORedirection", "sys_a0_9a", "sys_a0_9b",
  91         "SetConf",                      "GetConf",              "sys_a0_9e",            "SetMem",
  92 // 0xa0
  93         "_boot",                        "SystemError",  "EnqueueCdIntr",        "DequeueCdIntr",
  94         "sys_a0_a4",            "ReadSector",   "get_cd_status",        "bufs_cb_0",
  95         "bufs_cb_1",            "bufs_cb_2",    "bufs_cb_3",            "_card_info",
  96         "_card_load",           "_card_auto",   "bufs_cd_4",            "sys_a0_af",
  97 // 0xb0
  98         "sys_a0_b0",            "sys_a0_b1",    "do_a_long_jmp",        "sys_a0_b3",
  99         "?? sub_function",
 100 };
 101
 102 char *biosB0n[256] = {
 103 // 0x00
 104         "SysMalloc",            "sys_b0_01",    "sys_b0_02",    "sys_b0_03",
 105         "sys_b0_04",            "sys_b0_05",    "sys_b0_06",    "DeliverEvent",
 106         "OpenEvent",            "CloseEvent",   "WaitEvent",    "TestEvent",
 107         "EnableEvent",          "DisableEvent", "OpenTh",               "CloseTh",
 108 // 0x10
 109         "ChangeTh",                     "sys_b0_11",    "InitPAD",              "StartPAD",
 110         "StopPAD",                      "PAD_init",             "PAD_dr",               "ReturnFromExecption",
 111         "ResetEntryInt",        "HookEntryInt", "sys_b0_1a",    "sys_b0_1b",
 112         "sys_b0_1c",            "sys_b0_1d",    "sys_b0_1e",    "sys_b0_1f",
 113 // 0x20
 114         "UnDeliverEvent",       "sys_b0_21",    "sys_b0_22",    "sys_b0_23",
 115         "sys_b0_24",            "sys_b0_25",    "sys_b0_26",    "sys_b0_27",
 116         "sys_b0_28",            "sys_b0_29",    "sys_b0_2a",    "sys_b0_2b",
 117         "sys_b0_2c",            "sys_b0_2d",    "sys_b0_2e",    "sys_b0_2f",
 118 // 0x30
 119         "sys_b0_30",            "sys_b0_31",    "open",                 "lseek",
 120         "read",                         "write",                "close",                "ioctl",
 121         "exit",                         "sys_b0_39",    "getc",                 "putc",
 122         "getchar",                      "putchar",              "gets",                 "puts",
 123 // 0x40
 124         "cd",                           "format",               "firstfile",    "nextfile",
 125         "rename",                       "delete",               "undelete",             "AddDevice",
 126         "RemoteDevice",         "PrintInstalledDevices", "InitCARD", "StartCARD",
 127         "StopCARD",                     "sys_b0_4d",    "_card_write",  "_card_read",
 128 // 0x50
 129         "_new_card",            "Krom2RawAdd",  "sys_b0_52",    "sys_b0_53",
 130         "_get_errno",           "_get_error",   "GetC0Table",   "GetB0Table",
 131         "_card_chan",           "sys_b0_59",    "sys_b0_5a",    "ChangeClearPAD",
 132         "_card_status",         "_card_wait",
 133 };
 134
 135 char *biosC0n[256] = {
 136 // 0x00
 137         "InitRCnt",                       "InitException",              "SysEnqIntRP",          "SysDeqIntRP",
 138         "get_free_EvCB_slot", "get_free_TCB_slot",      "ExceptionHandler",     "InstallExeptionHandler",
 139         "SysInitMemory",          "SysInitKMem",                "ChangeClearRCnt",      "SystemError",
 140         "InitDefInt",             "sys_c0_0d",                  "sys_c0_0e",            "sys_c0_0f",
 141 // 0x10
 142         "sys_c0_10",              "sys_c0_11",                  "InstallDevices",       "FlushStfInOutPut",
 143         "sys_c0_14",              "_cdevinput",                 "_cdevscan",            "_circgetc",
 144         "_circputc",              "ioabort",                    "sys_c0_1a",            "KernelRedirect",
 145         "PatchAOTable",
 146 };
 147
 148 //#define r0 (psxRegs.GPR.n.r0)
 149 #define at (psxRegs.GPR.n.at)
 150 #define v0 (psxRegs.GPR.n.v0)
 151 #define v1 (psxRegs.GPR.n.v1)
 152 #define a0 (psxRegs.GPR.n.a0)
 153 #define a1 (psxRegs.GPR.n.a1)
 154 #define a2 (psxRegs.GPR.n.a2)
 155 #define a3 (psxRegs.GPR.n.a3)
 156 #define t0 (psxRegs.GPR.n.t0)
 157 #define t1 (psxRegs.GPR.n.t1)
 158 #define t2 (psxRegs.GPR.n.t2)
 159 #define t3 (psxRegs.GPR.n.t3)
 160 #define t4 (psxRegs.GPR.n.t4)
 161 #define t5 (psxRegs.GPR.n.t5)
 162 #define t6 (psxRegs.GPR.n.t6)
 163 #define t7 (psxRegs.GPR.n.t7)
 164 #define t8 (psxRegs.GPR.n.t8)
 165 #define t9 (psxRegs.GPR.n.t9)
 166 #define s0 (psxRegs.GPR.n.s0)
 167 #define s1 (psxRegs.GPR.n.s1)
 168 #define s2 (psxRegs.GPR.n.s2)
 169 #define s3 (psxRegs.GPR.n.s3)
 170 #define s4 (psxRegs.GPR.n.s4)
 171 #define s5 (psxRegs.GPR.n.s5)
 172 #define s6 (psxRegs.GPR.n.s6)
 173 #define s7 (psxRegs.GPR.n.s7)
 174 #define k0 (psxRegs.GPR.n.k0)
 175 #define k1 (psxRegs.GPR.n.k1)
 176 #define gp (psxRegs.GPR.n.gp)
 177 #define sp (psxRegs.GPR.n.sp)
 178 #define fp (psxRegs.GPR.n.s8)
 179 #define ra (psxRegs.GPR.n.ra)
 180 #define pc0 (psxRegs.pc)
 181
 182 #define Ra0 ((char *)PSXM(a0))
 183 #define Ra1 ((char *)PSXM(a1))
 184 #define Ra2 ((char *)PSXM(a2))
 185 #define Ra3 ((char *)PSXM(a3))
 186 #define Rv0 ((char *)PSXM(v0))
 187 #define Rsp ((char *)PSXM(sp))
 188
 189 typedef struct {
 190         u32 desc;
 191         s32 status;
 192         s32 mode;
 193         u32 fhandler;
 194 } EvCB[32];
 195
 196 #define EvStUNUSED      0x0000
 197 #define EvStWAIT        0x1000
 198 #define EvStACTIVE      0x2000
 199 #define EvStALREADY 0x4000
 200
 201 #define EvMdINTR        0x1000
 202 #define EvMdNOINTR      0x2000
 203
 204 /*
 205 typedef struct {
 206         s32 next;
 207         s32 func1;
 208         s32 func2;
 209         s32 pad;
 210 } SysRPst;
 211 */
 212
 213 typedef struct {
 214         s32 status;
 215         s32 mode;
 216         u32 reg[32];
 217         u32 func;
 218 } TCB;
 219
 220 typedef struct {
 221         u32 _pc0;
 222         u32 gp0;
 223         u32 t_addr;
 224         u32 t_size;
 225         u32 d_addr;
 226         u32 d_size;
 227         u32 b_addr;
 228         u32 b_size;
 229         u32 S_addr;
 230         u32 s_size;
 231         u32 _sp, _fp, _gp, ret, base;
 232 } EXEC;
 233
 234 struct DIRENTRY {
 235         char name[20];
 236         s32 attr;
 237         s32 size;
 238         u32 next;
 239         s32 head;
 240         char system[4];
 241 };
 242
 243 typedef struct {
 244         char name[32];
 245         u32  mode;
 246         u32  offset;
 247         u32  size;
 248         u32  mcfile;
 249 } FileDesc;
 250
 251 static u32 *jmp_int = NULL;
 252 static int *pad_buf = NULL;
 253 static char *pad_buf1 = NULL, *pad_buf2 = NULL;
 254 static int pad_buf1len, pad_buf2len;
 255 static int pad_stopped = 0;
 256
 257 static u32 regs[35];
 258 static EvCB *Event;
 259 static EvCB *HwEV; // 0xf0
 260 static EvCB *EvEV; // 0xf1
 261 static EvCB *RcEV; // 0xf2
 262 static EvCB *UeEV; // 0xf3
 263 static EvCB *SwEV; // 0xf4
 264 static EvCB *ThEV; // 0xff
 265 static u32 heap_size = 0;
 266 static u32 *heap_addr = NULL;
 267 static u32 *heap_end = NULL;
 268 static u32 SysIntRP[8];
 269 static int CardState = -1;
 270 static TCB Thread[8];
 271 static int CurThread = 0;
 272 static FileDesc FDesc[32];
 273 static u32 card_active_chan;
 274
 275 boolean hleSoftCall = FALSE;
 276
 277 static inline void softCall(u32 pc) {
 278         pc0 = pc;
 279         ra = 0x80001000;
 280
 281         hleSoftCall = TRUE;
 282
 283         while (pc0 != 0x80001000) psxCpu->ExecuteBlock();
 284
 285         hleSoftCall = FALSE;
 286 }
 287
 288 static inline void softCall2(u32 pc) {
 289         u32 sra = ra;
 290         pc0 = pc;
 291         ra = 0x80001000;
 292
 293         hleSoftCall = TRUE;
 294
 295         while (pc0 != 0x80001000) psxCpu->ExecuteBlock();
 296         ra = sra;
 297
 298         hleSoftCall = FALSE;
 299 }
 300
 301 static inline void DeliverEvent(u32 ev, u32 spec) {
 302         if (Event[ev][spec].status != EvStACTIVE) return;
 303
 304 //      Event[ev][spec].status = EvStALREADY;
 305         if (Event[ev][spec].mode == EvMdINTR) {
 306                 softCall2(Event[ev][spec].fhandler);
 307         } else Event[ev][spec].status = EvStALREADY;
 308 }
 309
 310 static inline void SaveRegs() {
 311         memcpy(regs, psxRegs.GPR.r, 32*4);
 312         regs[32] = psxRegs.GPR.n.lo;
 313         regs[33] = psxRegs.GPR.n.hi;
 314         regs[34] = psxRegs.pc;
 315 }
 316
 317 static inline void LoadRegs() {
 318         memcpy(psxRegs.GPR.r, regs, 32*4);
 319         psxRegs.GPR.n.lo = regs[32];
 320         psxRegs.GPR.n.hi = regs[33];
 321 }
 322
 323 /*                                           *
 324 //                                           *
 325 //                                           *
 326 //               System calls A0             */
 327
 328
 329 #define buread(Ra1, mcd, length) { \
 330         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); \
 331         ptr = Mcd##mcd##Data + 8192 * FDesc[1 + mcd].mcfile + FDesc[1 + mcd].offset; \
 332         memcpy(Ra1, ptr, length); \
 333         if (FDesc[1 + mcd].mode & 0x8000) { \
 334         DeliverEvent(0x11, 0x2); /* 0xf0000011, 0x0004 */ \
 335         DeliverEvent(0x81, 0x2); /* 0xf4000001, 0x0004 */ \
 336         v0 = 0; } \
 337         else v0 = length; \
 338         FDesc[1 + mcd].offset += v0; \
 339 }
 340
 341 #define buwrite(Ra1, mcd, length) { \
 342         u32 offset =  + 8192 * FDesc[1 + mcd].mcfile + FDesc[1 + mcd].offset; \
 343         SysPrintf("write %d: %x,%x\n", FDesc[1 + mcd].mcfile, FDesc[1 + mcd].offset, a2); \
 344         ptr = Mcd##mcd##Data + offset; \
 345         memcpy(ptr, Ra1, length); \
 346         FDesc[1 + mcd].offset += length; \
 347         if (FDesc[1 + mcd].mode & 0x8000) { \
 348         DeliverEvent(0x11, 0x2); /* 0xf0000011, 0x0004 */ \
 349         DeliverEvent(0x81, 0x2); /* 0xf4000001, 0x0004 */ \
 350         v0 = 0; } \
 351         else v0 = length; \
 352 }
 353
 354
 355 /* Internally redirects to "FileRead(fd,tempbuf,1)".*/
 356 /* For some strange reason, the returned character is sign-expanded; */
 357 /* So if a return value of FFFFFFFFh could mean either character FFh, or error. */
 358 /* TODO FIX ME : Properly implement this behaviour */
 359 void psxBios_getc(void) // 0x03, 0x35
 360 {
 361         char *ptr;
 362         void *pa1 = Ra1;
 363 #ifdef PSXBIOS_LOG
 364         PSXBIOS_LOG("psxBios_%s\n", biosA0n[0x03]);
 365 #endif
 366         v0 = -1;
 367
 368         if (pa1) {
 369                 switch (a0) {
 370                         case 2: buread(pa1, 1, 1); break;
 371                         case 3: buread(pa1, 2, 1); break;
 372                 }
 373         }
 374
 375         pc0 = ra;
 376 }
 377
 378 /* Copy of psxBios_write, except size is 1. */
 379 void psxBios_putc(void) // 0x09, 0x3B
 380 {
 381         char *ptr;
 382         void *pa1 = Ra1;
 383 #ifdef PSXBIOS_LOG
 384         PSXBIOS_LOG("psxBios_%s\n", biosA0n[0x09]);
 385 #endif
 386         v0 = -1;
 387         if (!pa1) {
 388                 pc0 = ra;
 389                 return;
 390         }
 391
 392         if (a0 == 1) { // stdout
 393                 char *ptr = (char *)pa1;
 394
 395                 v0 = a2;
 396                 while (a2 > 0) {
 397                         printf("%c", *ptr++); a2--;
 398                 }
 399                 pc0 = ra; return;
 400         }
 401
 402         switch (a0) {
 403                 case 2: buwrite(pa1, 1, 1); break;
 404                 case 3: buwrite(pa1, 2, 1); break;
 405         }
 406
 407         pc0 = ra;
 408 }
 409
 410 void psxBios_todigit(void) // 0x0a
 411 {
 412         int c = a0;
 413 #ifdef PSXBIOS_LOG
 414         PSXBIOS_LOG("psxBios_%s\n", biosA0n[0x0a]);
 415 #endif
 416         c &= 0xFF;
 417         if (c >= 0x30 && c < 0x3A) {
 418                 c -= 0x30;
 419         }
 420         else if (c > 0x60 && c < 0x7B) {
 421                 c -= 0x20;
 422         }
 423         else if (c > 0x40 && c < 0x5B) {
 424                 c = c - 0x41 + 10;
 425         }
 426         else if (c >= 0x80) {
 427                 c = -1;
 428         }
 429         else
 430         {
 431                 c = 0x0098967F;
 432         }
 433         v0 = c;
 434         pc0 = ra;
 435 }
 436
 437 void psxBios_abs() { // 0x0e
 438         if ((s32)a0 < 0) v0 = -(s32)a0;
 439         else v0 = a0;
 440         pc0 = ra;
 441 }
 442
 443 void psxBios_labs() { // 0x0f
 444         psxBios_abs();
 445 }
 446
 447 void psxBios_atoi() { // 0x10
 448         s32 n = 0, f = 0;
 449         char *p = (char *)Ra0;
 450
 451         for (;;p++) {
 452                 switch (*p) {
 453                         case ' ': case '\t': continue;
 454                         case '-': f++;
 455                         case '+': p++;
 456                 }
 457                 break;
 458         }
 459
 460         while (*p >= '0' && *p <= '9') {
 461                 n = n * 10 + *p++ - '0';
 462         }
 463
 464         v0 = (f ? -n : n);
 465         pc0 = ra;
 466 }
 467
 468 void psxBios_atol() { // 0x11
 469         psxBios_atoi();
 470 }
 471
 472 void psxBios_setjmp() { // 0x13
 473         u32 *jmp_buf = (u32 *)Ra0;
 474         int i;
 475
 476 #ifdef PSXBIOS_LOG
 477         PSXBIOS_LOG("psxBios_%s\n", biosA0n[0x13]);
 478 #endif
 479
 480         jmp_buf[0] = ra;
 481         jmp_buf[1] = sp;
 482         jmp_buf[2] = fp;
 483         for (i = 0; i < 8; i++) // s0-s7
 484                 jmp_buf[3 + i] = psxRegs.GPR.r[16 + i];
 485         jmp_buf[11] = gp;
 486
 487         v0 = 0; pc0 = ra;
 488 }
 489
 490 void psxBios_longjmp() { // 0x14
 491         u32 *jmp_buf = (u32 *)Ra0;
 492         int i;
 493
 494 #ifdef PSXBIOS_LOG
 495         PSXBIOS_LOG("psxBios_%s\n", biosA0n[0x14]);
 496 #endif
 497
 498         ra = jmp_buf[0]; /* ra */
 499         sp = jmp_buf[1]; /* sp */
 500         fp = jmp_buf[2]; /* fp */
 501         for (i = 0; i < 8; i++) // s0-s7
 502                 psxRegs.GPR.r[16 + i] = jmp_buf[3 + i];
 503         gp = jmp_buf[11]; /* gp */
 504
 505         v0 = a1; pc0 = ra;
 506 }
 507
 508 void psxBios_strcat() { // 0x15
 509         char *p1 = (char *)Ra0, *p2 = (char *)Ra1;
 510
 511 #ifdef PSXBIOS_LOG
 512         PSXBIOS_LOG("psxBios_%s: %s, %s\n", biosA0n[0x15], Ra0, Ra1);
 513 #endif
 514         if (a0 == 0 || a1 == 0)
 515         {
 516                 v0 = 0;
 517                 pc0 = ra;
 518                 return;
 519         }
 520         while (*p1++);
 521         --p1;
 522         while ((*p1++ = *p2++) != '\0');
 523
 524         v0 = a0; pc0 = ra;
 525 }
 526
 527 void psxBios_strncat() { // 0x16
 528         char *p1 = (char *)Ra0, *p2 = (char *)Ra1;
 529         s32 n = a2;
 530
 531 #ifdef PSXBIOS_LOG
 532         PSXBIOS_LOG("psxBios_%s: %s (%x), %s (%x), %d\n", biosA0n[0x16], Ra0, a0, Ra1, a1, a2);
 533 #endif
 534         if (a0 == 0 || a1 == 0)
 535         {
 536                 v0 = 0;
 537                 pc0 = ra;
 538                 return;
 539         }
 540         while (*p1++);
 541         --p1;
 542         while ((*p1++ = *p2++) != '\0') {
 543                 if (--n < 0) {
 544                         *--p1 = '\0';
 545                         break;
 546                 }
 547         }
 548
 549         v0 = a0; pc0 = ra;
 550 }
 551
 552 void psxBios_strcmp() { // 0x17
 553         char *p1 = (char *)Ra0, *p2 = (char *)Ra1;
 554         s32 n=0;
 555         if (a0 == 0 && a1 == 0)
 556         {
 557                 v0 = 0;
 558                 pc0 = ra;
 559                 return;
 560         }
 561         else if (a0 == 0 && a1 != 0)
 562         {
 563                 v0 = -1;
 564                 pc0 = ra;
 565                 return;
 566         }
 567         else if (a0 != 0 && a1 == 0)
 568         {
 569                 v0 = 1;
 570                 pc0 = ra;
 571                 return;
 572         }
 573 #ifdef PSXBIOS_LOG
 574         PSXBIOS_LOG("psxBios_%s: %s (%x), %s (%x)\n", biosA0n[0x17], Ra0, a0, Ra1, a1);
 575 #endif
 576
 577         while (*p1 == *p2++) {
 578                 n++;
 579                 if (*p1++ == '\0') {
 580                         v1=n-1;
 581                         a0+=n;
 582                         a1+=n;
 583                         v0 = 0;
 584                         pc0 = ra;
 585                         return;
 586                 }
 587         }
 588
 589         v0 = (*p1 - *--p2);
 590         v1 = n;
 591         a0+=n;
 592         a1+=n;
 593         pc0 = ra;
 594 }
 595
 596 void psxBios_strncmp() { // 0x18
 597         char *p1 = (char *)Ra0, *p2 = (char *)Ra1;
 598         s32 n = a2;
 599         if (a0 == 0 && a1 == 0)
 600         {
 601                 v0 = 0;
 602                 pc0 = ra;
 603                 return;
 604         }
 605         else if (a0 == 0 && a1 != 0)
 606         {
 607                 v0 = -1;
 608                 pc0 = ra;
 609                 return;
 610         }
 611         else if (a0 != 0 && a1 == 0)
 612         {
 613                 v0 = 1;
 614                 pc0 = ra;
 615                 return;
 616         }
 617 #ifdef PSXBIOS_LOG
 618         PSXBIOS_LOG("psxBios_%s: %s (%x), %s (%x), %d\n", biosA0n[0x18], Ra0, a0, Ra1, a1, a2);
 619 #endif
 620
 621         while (--n >= 0 && *p1 == *p2++) {
 622                 if (*p1++ == '\0') {
 623                         v0 = 0;
 624                         pc0 = ra;
 625                         v1 = a2 - ((a2-n) - 1);
 626                         a0 += (a2-n) - 1;
 627                         a1 += (a2-n) - 1;
 628                         a2 = n;
 629                         return;
 630                 }
 631         }
 632
 633         v0 = (n < 0 ? 0 : *p1 - *--p2);
 634         pc0 = ra;
 635         v1 = a2 - ((a2-n) - 1);
 636         a0 += (a2-n) - 1;
 637         a1 += (a2-n) - 1;
 638         a2 = n;
 639 }
 640
 641 void psxBios_strcpy() { // 0x19
 642         char *p1 = (char *)Ra0, *p2 = (char *)Ra1;
 643         if (a0 == 0 || a1 == 0)
 644         {
 645                 v0 = 0;
 646                 pc0 = ra;
 647                 return;
 648         }
 649         while ((*p1++ = *p2++) != '\0');
 650
 651         v0 = a0; pc0 = ra;
 652 }
 653
 654 void psxBios_strncpy() { // 0x1a
 655         char *p1 = (char *)Ra0, *p2 = (char *)Ra1;
 656         s32 n = a2, i;
 657         if (a0 == 0 || a1 == 0)
 658         {
 659                 v0 = 0;
 660                 pc0 = ra;
 661                 return;
 662         }
 663         for (i = 0; i < n; i++) {
 664                 if ((*p1++ = *p2++) == '\0') {
 665                         while (++i < n) {
 666                                 *p1++ = '\0';
 667                         }
 668                         v0 = a0; pc0 = ra;
 669                         return;
 670                 }
 671         }
 672
 673         v0 = a0; pc0 = ra;
 674 }
 675
 676 void psxBios_strlen() { // 0x1b
 677         char *p = (char *)Ra0;
 678         v0 = 0;
 679         if (a0 == 0)
 680         {
 681                 pc0 = ra;
 682                 return;
 683         }
 684         while (*p++) v0++;
 685         pc0 = ra;
 686 }
 687
 688 void psxBios_index() { // 0x1c
 689         char *p = (char *)Ra0;
 690         if (a0 == 0)
 691         {
 692                 v0 = 0;
 693                 pc0 = ra;
 694                 return;
 695         }
 696
 697         do {
 698                 if (*p == a1) {
 699                         v0 = a0 + (p - (char *)Ra0);
 700                         pc0 = ra;
 701                         return;
 702                 }
 703         } while (*p++ != '\0');
 704
 705         v0 = 0; pc0 = ra;
 706 }
 707
 708 void psxBios_rindex() { // 0x1d
 709         char *p = (char *)Ra0;
 710
 711         v0 = 0;
 712         if (a0 == 0)
 713         {
 714                 pc0 = ra;
 715                 return;
 716         }
 717         do {
 718                 if (*p == a1)
 719                         v0 = a0 + (p - (char *)Ra0);
 720         } while (*p++ != '\0');
 721
 722         pc0 = ra;
 723 }
 724
 725 void psxBios_strchr() { // 0x1e
 726         psxBios_index();
 727 }
 728
 729 void psxBios_strrchr() { // 0x1f
 730         psxBios_rindex();
 731 }
 732
 733 void psxBios_strpbrk() { // 0x20
 734         char *p1 = (char *)Ra0, *p2 = (char *)Ra1, *scanp, c, sc;
 735
 736         while ((c = *p1++) != '\0') {
 737                 for (scanp = p2; (sc = *scanp++) != '\0';) {
 738                         if (sc == c) {
 739                                 v0 = a0 + (p1 - 1 - (char *)Ra0);
 740                                 pc0 = ra;
 741                                 return;
 742                         }
 743                 }
 744         }
 745
 746         // BUG: return a0 instead of NULL if not found
 747         v0 = a0; pc0 = ra;
 748 }
 749
 750 void psxBios_strspn() { // 0x21
 751         char *p1, *p2;
 752
 753         for (p1 = (char *)Ra0; *p1 != '\0'; p1++) {
 754                 for (p2 = (char *)Ra1; *p2 != '\0' && *p2 != *p1; p2++);
 755                 if (*p2 == '\0') break;
 756         }
 757
 758         v0 = p1 - (char *)Ra0; pc0 = ra;
 759 }
 760
 761 void psxBios_strcspn() { // 0x22
 762         char *p1, *p2;
 763
 764         for (p1 = (char *)Ra0; *p1 != '\0'; p1++) {
 765                 for (p2 = (char *)Ra1; *p2 != '\0' && *p2 != *p1; p2++);
 766                 if (*p2 != '\0') break;
 767         }
 768
 769         v0 = p1 - (char *)Ra0; pc0 = ra;
 770 }
 771
 772 void psxBios_strtok() { // 0x23
 773         char *pcA0 = (char *)Ra0;
 774         char *pcRet = strtok(pcA0, (char *)Ra1);
 775         if (pcRet)
 776                 v0 = a0 + pcRet - pcA0;
 777         else
 778                 v0 = 0;
 779         pc0 = ra;
 780 }
 781
 782 void psxBios_strstr() { // 0x24
 783         char *p = (char *)Ra0, *p1, *p2;
 784
 785         while (*p != '\0') {
 786                 p1 = p;
 787                 p2 = (char *)Ra1;
 788
 789                 while (*p1 != '\0' && *p2 != '\0' && *p1 == *p2) {
 790                         p1++; p2++;
 791                 }
 792
 793                 if (*p2 == '\0') {
 794                         v0 = a0 + (p - (char *)Ra0);
 795                         pc0 = ra;
 796                         return;
 797                 }
 798
 799                 p++;
 800         }
 801
 802         v0 = 0; pc0 = ra;
 803 }
 804
 805 void psxBios_toupper() { // 0x25
 806         v0 = (s8)(a0 & 0xff);
 807         if (v0 >= 'a' && v0 <= 'z') v0 -= 'a' - 'A';
 808         pc0 = ra;
 809 }
 810
 811 void psxBios_tolower() { // 0x26
 812         v0 = (s8)(a0 & 0xff);
 813         if (v0 >= 'A' && v0 <= 'Z') v0 += 'a' - 'A';
 814         pc0 = ra;
 815 }
 816
 817 void psxBios_bcopy() { // 0x27
 818         char *p1 = (char *)Ra1, *p2 = (char *)Ra0;
 819         v0 = a0;
 820         if (a0 == 0 || a2 > 0x7FFFFFFF)
 821         {
 822                 pc0 = ra;
 823                 return;
 824         }
 825         while ((s32)a2-- > 0) *p1++ = *p2++;
 826         a2 = 0;
 827         pc0 = ra;
 828 }
 829
 830 void psxBios_bzero() { // 0x28
 831         char *p = (char *)Ra0;
 832         v0 = a0;
 833         /* Same as memset here (See memset below) */
 834         if (a1 > 0x7FFFFFFF || a1 == 0)
 835         {
 836                 v0 = 0;
 837                 pc0 = ra;
 838                 return;
 839         }
 840         else if (a0 == 0)
 841         {
 842                 pc0 = ra;
 843                 return;
 844         }
 845         while ((s32)a1-- > 0) *p++ = '\0';
 846         a1 = 0;
 847         pc0 = ra;
 848 }
 849
 850 void psxBios_bcmp() { // 0x29
 851         char *p1 = (char *)Ra0, *p2 = (char *)Ra1;
 852
 853         if (a0 == 0 || a1 == 0) { v0 = 0; pc0 = ra; return; }
 854
 855         while ((s32)a2-- > 0) {
 856                 if (*p1++ != *p2++) {
 857                         v0 = *p1 - *p2; // BUG: compare the NEXT byte
 858                         pc0 = ra;
 859                         return;
 860                 }
 861         }
 862
 863         v0 = 0; pc0 = ra;
 864 }
 865
 866 void psxBios_memcpy() { // 0x2a
 867         char *p1 = (char *)Ra0, *p2 = (char *)Ra1;
 868         v0 = a0;
 869         if (a0 == 0 || a2 > 0x7FFFFFFF)
 870         {
 871                 pc0 = ra;
 872                 return;
 873         }
 874         while ((s32)a2-- > 0) {
 875                 *p1++ = *p2++;
 876         }
 877         a2 = 0;
 878         pc0 = ra;
 879 }
 880
 881 void psxBios_memset() { // 0x2b
 882         char *p = (char *)Ra0;
 883         v0 = a0;
 884         if (a2 > 0x7FFFFFFF || a2 == 0)
 885         {
 886                 v0 = 0;
 887                 pc0 = ra;
 888                 return;
 889         }
 890         if (a0 == 0)
 891         {
 892                 pc0 = ra;
 893                 return;
 894         }
 895         while ((s32)a2-- > 0) *p++ = (char)a1;
 896         a2 = 0;
 897         v0 = a0; pc0 = ra;
 898 }
 899
 900 void psxBios_memmove() { // 0x2c
 901         char *p1 = (char *)Ra0, *p2 = (char *)Ra1;
 902         v0 = a0;
 903         if (a0 == 0 || a2 > 0x7FFFFFFF)
 904         {
 905                 pc0 = ra;
 906                 return;
 907         }
 908         if (p2 <= p1 && p2 + a2 > p1) {
 909                 a2++; // BUG: copy one more byte here
 910                 p1 += a2;
 911                 p2 += a2;
 912                 while ((s32)a2-- > 0) *--p1 = *--p2;
 913         } else {
 914                 while ((s32)a2-- > 0) *p1++ = *p2++;
 915         }
 916         pc0 = ra;
 917 }
 918
 919 void psxBios_memcmp() { // 0x2d
 920         psxBios_bcmp();
 921 }
 922
 923 void psxBios_memchr() { // 0x2e
 924         char *p = (char *)Ra0;
 925
 926         while ((s32)a2-- > 0) {
 927                 if (*p++ != (s8)a1) continue;
 928                 v0 = a0 + (p - (char *)Ra0 - 1);
 929                 pc0 = ra;
 930                 return;
 931         }
 932
 933         v0 = 0; pc0 = ra;
 934 }
 935
 936 void psxBios_rand() { // 0x2f
 937         u32 s = psxMu32(0x9010) * 1103515245 + 12345;
 938         v0 = (s >> 16) & 0x7fff;
 939         psxMu32ref(0x9010) = SWAPu32(s);
 940         pc0 = ra;
 941 }
 942
 943 void psxBios_srand() { // 0x30
 944         psxMu32ref(0x9010) = SWAPu32(a0);
 945         pc0 = ra;
 946 }
 947
 948 static u32 qscmpfunc, qswidth;
 949
 950 static inline int qscmp(char *a, char *b) {
 951         u32 sa0 = a0;
 952
 953         a0 = sa0 + (a - (char *)PSXM(sa0));
 954         a1 = sa0 + (b - (char *)PSXM(sa0));
 955
 956         softCall2(qscmpfunc);
 957
 958         a0 = sa0;
 959         return (s32)v0;
 960 }
 961
 962 static inline void qexchange(char *i, char *j) {
 963         char t;
 964         int n = qswidth;
 965
 966         do {
 967                 t = *i;
 968                 *i++ = *j;
 969                 *j++ = t;
 970         } while (--n);
 971 }
 972
 973 static inline void q3exchange(char *i, char *j, char *k) {
 974         char t;
 975         int n = qswidth;
 976
 977         do {
 978                 t = *i;
 979                 *i++ = *k;
 980                 *k++ = *j;
 981                 *j++ = t;
 982         } while (--n);
 983 }
 984
 985 static void qsort_main(char *a, char *l) {
 986         char *i, *j, *lp, *hp;
 987         int c;
 988         unsigned int n;
 989
 990 start:
 991         if ((n = l - a) <= qswidth)
 992                 return;
 993         n = qswidth * (n / (2 * qswidth));
 994         hp = lp = a + n;
 995         i = a;
 996         j = l - qswidth;
 997         while (TRUE) {
 998                 if (i < lp) {
 999                         if ((c = qscmp(i, lp)) == 0) {
1000                                 qexchange(i, lp -= qswidth);
1001                                 continue;
1002                         }
1003                         if (c < 0) {
1004                                 i += qswidth;
1005                                 continue;
1006                         }
1007                 }
1008
1009 loop:
1010                 if (j > hp) {
1011                         if ((c = qscmp(hp, j)) == 0) {
1012                                 qexchange(hp += qswidth, j);
1013                                 goto loop;
1014                         }
1015                         if (c > 0) {
1016                                 if (i == lp) {
1017                                         q3exchange(i, hp += qswidth, j);
1018                                         i = lp += qswidth;
1019                                         goto loop;
1020                                 }
1021                                 qexchange(i, j);
1022                                 j -= qswidth;
1023                                 i += qswidth;
1024                                 continue;
1025                         }
1026                         j -= qswidth;
1027                         goto loop;
1028                 }
1029
1030                 if (i == lp) {
1031                         if (lp - a >= l - hp) {
1032                                 qsort_main(hp + qswidth, l);
1033                                 l = lp;
1034                         } else {
1035                                 qsort_main(a, lp);
1036                                 a = hp + qswidth;
1037                         }
1038                         goto start;
1039                 }
1040
1041                 q3exchange(j, lp -= qswidth, i);
1042                 j = hp -= qswidth;
1043         }
1044 }
1045
1046 void psxBios_qsort() { // 0x31
1047         qswidth = a2;
1048         qscmpfunc = a3;
1049         qsort_main((char *)Ra0, (char *)Ra0 + a1 * a2);
1050
1051         pc0 = ra;
1052 }
1053
1054 void psxBios_malloc() { // 0x33
1055         unsigned int *chunk, *newchunk = NULL;
1056         unsigned int dsize = 0, csize, cstat;
1057         int colflag;
1058 #ifdef PSXBIOS_LOG
1059         PSXBIOS_LOG("psxBios_%s\n", biosA0n[0x33]);
1060 #endif
1061         if (!a0 || (!heap_size || !heap_addr)) {
1062                 v0 = 0;
1063                 pc0 = ra;
1064                 return;
1065         }
1066
1067         // scan through heap and combine free chunks of space
1068         chunk = heap_addr;
1069         colflag = 0;
1070         while(chunk < heap_end) {
1071                 // get size and status of actual chunk
1072                 csize = ((u32)*chunk) & 0xfffffffc;
1073                 cstat = ((u32)*chunk) & 1;
1074
1075                 // most probably broken heap descriptor
1076                 // this fixes Burning Road
1077                 if (*chunk == 0) {
1078                         newchunk = chunk;
1079                         dsize = ((uptr)heap_end - (uptr)chunk) - 4;
1080                         colflag = 1;
1081                         break;
1082                 }
1083
1084                 // it's a free chunk
1085                 if(cstat == 1) {
1086                         if(colflag == 0) {
1087                                 newchunk = chunk;
1088                                 dsize = csize;
1089                                 colflag = 1;                    // let's begin a new collection of free memory
1090                         }
1091                         else dsize += (csize+4);        // add the new size including header
1092                 }
1093                 // not a free chunk: did we start a collection ?
1094                 else {
1095                         if(colflag == 1) {                      // collection is over
1096                                 colflag = 0;
1097                                 *newchunk = SWAP32(dsize | 1);
1098                         }
1099                 }
1100
1101                 // next chunk
1102                 chunk = (u32*)((uptr)chunk + csize + 4);
1103         }
1104         // if neccessary free memory on end of heap
1105         if (colflag == 1)
1106                 *newchunk = SWAP32(dsize | 1);
1107
1108         chunk = heap_addr;
1109         csize = ((u32)*chunk) & 0xfffffffc;
1110         cstat = ((u32)*chunk) & 1;
1111         dsize = (a0 + 3) & 0xfffffffc;
1112
1113         // exit on uninitialized heap
1114         if (chunk == NULL) {
1115                 printf("malloc %x,%x: Uninitialized Heap!\n", v0, a0);
1116                 v0 = 0;
1117                 pc0 = ra;
1118                 return;
1119         }
1120
1121         // search an unused chunk that is big enough until the end of the heap
1122         while ((dsize > csize || cstat==0) && chunk < heap_end ) {
1123                 chunk = (u32*)((uptr)chunk + csize + 4);
1124
1125                         // catch out of memory
1126                         if(chunk >= heap_end) {
1127                                 printf("malloc %x,%x: Out of memory error!\n",
1128                                         v0, a0);
1129                                 v0 = 0; pc0 = ra;
1130                                 return;
1131                         }
1132
1133                 csize = ((u32)*chunk) & 0xfffffffc;
1134                 cstat = ((u32)*chunk) & 1;
1135         }
1136
1137         // allocate memory
1138         if(dsize == csize) {
1139                 // chunk has same size
1140                 *chunk &= 0xfffffffc;
1141         } else if (dsize > csize) {
1142                 v0 = 0; pc0 = ra;
1143                 return;
1144         } else {
1145                 // split free chunk
1146                 *chunk = SWAP32(dsize);
1147                 newchunk = (u32*)((uptr)chunk + dsize + 4);
1148                 *newchunk = SWAP32(((csize - dsize - 4) & 0xfffffffc) | 1);
1149         }
1150
1151         // return pointer to allocated memory
1152         v0 = ((uptr)chunk - (uptr)psxM) + 4;
1153         v0|= 0x80000000;
1154         //printf ("malloc %x,%x\n", v0, a0);
1155         pc0 = ra;
1156 }
1157
1158 void psxBios_free() { // 0x34
1159
1160 #ifdef PSXBIOS_LOG
1161         PSXBIOS_LOG("psxBios_%s\n", biosA0n[0x34]);
1162 #endif
1163
1164         SysPrintf("free %x: %x bytes\n", a0, *(u32*)(Ra0-4));
1165
1166         if (a0)
1167                 *(u32*)(Ra0-4) |= 1;    // set chunk to free
1168         pc0 = ra;
1169 }
1170
1171 void psxBios_calloc() { // 0x37
1172         void *pv0;
1173 #ifdef PSXBIOS_LOG
1174         PSXBIOS_LOG("psxBios_%s\n", biosA0n[0x37]);
1175 #endif
1176
1177         a0 = a0 * a1;
1178         psxBios_malloc();
1179         pv0 = Rv0;
1180         if (pv0)
1181                 memset(pv0, 0, a0);
1182 }
1183
1184 void psxBios_realloc() { // 0x38
1185         u32 block = a0;
1186         u32 size = a1;
1187 #ifdef PSXBIOS_LOG
1188         PSXBIOS_LOG("psxBios_%s\n", biosA0n[0x38]);
1189 #endif
1190
1191         a0 = block;
1192         /* If "old_buf" is zero, executes malloc(new_size), and returns r2=new_buf (or 0=failed). */
1193         if (block == 0)
1194         {
1195                 psxBios_malloc();
1196         }
1197         /* Else, if "new_size" is zero, executes free(old_buf), and returns r2=garbage. */
1198         else if (size == 0)
1199         {
1200                 psxBios_free();
1201         }
1202         /* Else, executes malloc(new_size), bcopy(old_buf,new_buf,new_size), and free(old_buf), and returns r2=new_buf (or 0=failed). */
1203         /* Note that it is not quite implemented this way here. */
1204         else
1205         {
1206                 psxBios_free();
1207                 a0 = size;
1208                 psxBios_malloc();
1209         }
1210 }
1211
1212
1213 /* InitHeap(void *block , int n) */
1214 void psxBios_InitHeap() { // 0x39
1215         unsigned int size;
1216
1217 #ifdef PSXBIOS_LOG
1218         PSXBIOS_LOG("psxBios_%s\n", biosA0n[0x39]);
1219 #endif
1220
1221         if (((a0 & 0x1fffff) + a1)>= 0x200000) size = 0x1ffffc - (a0 & 0x1fffff);
1222         else size = a1;
1223
1224         size &= 0xfffffffc;
1225
1226         heap_addr = (u32 *)Ra0;
1227         heap_size = size;
1228         heap_end = (u32 *)((u8 *)heap_addr + heap_size);
1229         /* HACKFIX: Commenting out this line fixes GTA2 crash */
1230         //*heap_addr = SWAP32(size | 1);
1231
1232         SysPrintf("InitHeap %x,%x : %x %x\n",a0,a1, (int)((uptr)heap_addr-(uptr)psxM), size);
1233
1234         pc0 = ra;
1235 }
1236
1237 void psxBios_getchar() { //0x3b
1238         v0 = getchar(); pc0 = ra;
1239 }
1240
1241 void psxBios_printf() { // 0x3f
1242         char tmp[1024];
1243         char tmp2[1024];
1244         u32 save[4];
1245         char *ptmp = tmp;
1246         int n=1, i=0, j;
1247         void *psp;
1248
1249         psp = PSXM(sp);
1250         if (psp) {
1251                 memcpy(save, psp, 4 * 4);
1252                 psxMu32ref(sp) = SWAP32((u32)a0);
1253                 psxMu32ref(sp + 4) = SWAP32((u32)a1);
1254                 psxMu32ref(sp + 8) = SWAP32((u32)a2);
1255                 psxMu32ref(sp + 12) = SWAP32((u32)a3);
1256         }
1257
1258         while (Ra0[i]) {
1259                 switch (Ra0[i]) {
1260                         case '%':
1261                                 j = 0;
1262                                 tmp2[j++] = '%';
1263 _start:
1264                                 switch (Ra0[++i]) {
1265                                         case '.':
1266                                         case 'l':
1267                                                 tmp2[j++] = Ra0[i]; goto _start;
1268                                         default:
1269                                                 if (Ra0[i] >= '0' && Ra0[i] <= '9') {
1270                                                         tmp2[j++] = Ra0[i];
1271                                                         goto _start;
1272                                                 }
1273                                                 break;
1274                                 }
1275                                 tmp2[j++] = Ra0[i];
1276                                 tmp2[j] = 0;
1277
1278                                 switch (Ra0[i]) {
1279                                         case 'f': case 'F':
1280                                                 ptmp += sprintf(ptmp, tmp2, (float)psxMu32(sp + n * 4)); n++; break;
1281                                         case 'a': case 'A':
1282                                         case 'e': case 'E':
1283                                         case 'g': case 'G':
1284                                                 ptmp += sprintf(ptmp, tmp2, (double)psxMu32(sp + n * 4)); n++; break;
1285                                         case 'p':
1286                                         case 'i': case 'u':
1287                                         case 'd': case 'D':
1288                                         case 'o': case 'O':
1289                                         case 'x': case 'X':
1290                                                 ptmp += sprintf(ptmp, tmp2, (unsigned int)psxMu32(sp + n * 4)); n++; break;
1291                                         case 'c':
1292                                                 ptmp += sprintf(ptmp, tmp2, (unsigned char)psxMu32(sp + n * 4)); n++; break;
1293                                         case 's':
1294                                                 ptmp += sprintf(ptmp, tmp2, (char*)PSXM(psxMu32(sp + n * 4))); n++; break;
1295                                         case '%':
1296                                                 *ptmp++ = Ra0[i]; break;
1297                                 }
1298                                 i++;
1299                                 break;
1300                         default:
1301                                 *ptmp++ = Ra0[i++];
1302                 }
1303         }
1304         *ptmp = 0;
1305
1306         if (psp)
1307                 memcpy(psp, save, 4 * 4);
1308
1309         SysPrintf("%s", tmp);
1310
1311         pc0 = ra;
1312 }
1313
1314 void psxBios_format() { // 0x41
1315         if (strcmp(Ra0, "bu00:") == 0 && Config.Mcd1[0] != '\0')
1316         {
1317                 CreateMcd(Config.Mcd1);
1318                 LoadMcd(1, Config.Mcd1);
1319                 v0 = 1;
1320         }
1321         else if (strcmp(Ra0, "bu10:") == 0 && Config.Mcd2[0] != '\0')
1322         {
1323                 CreateMcd(Config.Mcd2);
1324                 LoadMcd(2, Config.Mcd2);
1325                 v0 = 1;
1326         }
1327         else
1328         {
1329                 v0 = 0;
1330         }
1331         pc0 = ra;
1332 }
1333
1334 /*
1335  *      long Load(char *name, struct EXEC *header);
1336  */
1337
1338 void psxBios_Load() { // 0x42
1339         EXE_HEADER eheader;
1340         void *pa1;
1341
1342 #ifdef PSXBIOS_LOG
1343         PSXBIOS_LOG("psxBios_%s: %s, %x\n", biosA0n[0x42], Ra0, a1);
1344 #endif
1345
1346         pa1 = Ra1;
1347         if (pa1 && LoadCdromFile(Ra0, &eheader) == 0) {
1348                 memcpy(pa1, ((char*)&eheader)+16, sizeof(EXEC));
1349                 v0 = 1;
1350         } else v0 = 0;
1351
1352         pc0 = ra;
1353 }
1354
1355 /*
1356  *      int Exec(struct EXEC *header , int argc , char **argv);
1357  */
1358
1359 void psxBios_Exec() { // 43
1360         EXEC *header = (EXEC*)Ra0;
1361         u32 tmp;
1362
1363 #ifdef PSXBIOS_LOG
1364         PSXBIOS_LOG("psxBios_%s: %x, %x, %x\n", biosA0n[0x43], a0, a1, a2);
1365 #endif
1366
1367         header->_sp = sp;
1368         header->_fp = fp;
1369         header->_sp = sp;
1370         header->_gp = gp;
1371         header->ret = ra;
1372         header->base = s0;
1373
1374         if (header->S_addr != 0) {
1375                 tmp = header->S_addr + header->s_size;
1376                 sp = tmp;
1377                 fp = sp;
1378         }
1379
1380         gp = header->gp0;
1381
1382         s0 = a0;
1383
1384         a0 = a1;
1385         a1 = a2;
1386
1387         ra = 0x8000;
1388         pc0 = header->_pc0;
1389 }
1390
1391 void psxBios_FlushCache() { // 44
1392 #ifdef PSXBIOS_LOG
1393         PSXBIOS_LOG("psxBios_%s\n", biosA0n[0x44]);
1394 #endif
1395
1396         pc0 = ra;
1397 }
1398
1399 void psxBios_GPU_dw() { // 0x46
1400         int size;
1401         s32 *ptr;
1402
1403 #ifdef PSXBIOS_LOG
1404         PSXBIOS_LOG("psxBios_%s\n", biosA0n[0x46]);
1405 #endif
1406
1407         GPU_writeData(0xa0000000);
1408         GPU_writeData((a1<<16)|(a0&0xffff));
1409         GPU_writeData((a3<<16)|(a2&0xffff));
1410         size = (a2*a3+1)/2;
1411         ptr = (s32*)PSXM(Rsp[4]);  //that is correct?
1412         do {
1413                 GPU_writeData(SWAP32(*ptr));
1414                 ptr++;
1415         } while(--size);
1416
1417         pc0 = ra;
1418 }
1419
1420 void psxBios_mem2vram() { // 0x47
1421         int size;
1422
1423         GPU_writeData(0xa0000000);
1424         GPU_writeData((a1<<16)|(a0&0xffff));
1425         GPU_writeData((a3<<16)|(a2&0xffff));
1426         size = (a2*a3+1)/2;
1427         GPU_writeStatus(0x04000002);
1428         psxHwWrite32(0x1f8010f4,0);
1429         psxHwWrite32(0x1f8010f0,psxHwRead32(0x1f8010f0)|0x800);
1430         psxHwWrite32(0x1f8010a0,Rsp[4]);//might have a buggy...
1431         psxHwWrite32(0x1f8010a4,((size/16)<<16)|16);
1432         psxHwWrite32(0x1f8010a8,0x01000201);
1433
1434         pc0 = ra;
1435 }
1436
1437 void psxBios_SendGPU() { // 0x48
1438         GPU_writeStatus(a0);
1439         gpuSyncPluginSR();
1440         pc0 = ra;
1441 }
1442
1443 void psxBios_GPU_cw() { // 0x49
1444         GPU_writeData(a0);
1445         pc0 = ra;
1446 }
1447
1448 void psxBios_GPU_cwb() { // 0x4a
1449         s32 *ptr = (s32*)Ra0;
1450         int size = a1;
1451         while(size--) {
1452                 GPU_writeData(SWAP32(*ptr));
1453                 ptr++;
1454         }
1455
1456         pc0 = ra;
1457 }
1458
1459 void psxBios_GPU_SendPackets() { //4b:
1460         GPU_writeStatus(0x04000002);
1461         psxHwWrite32(0x1f8010f4,0);
1462         psxHwWrite32(0x1f8010f0,psxHwRead32(0x1f8010f0)|0x800);
1463         psxHwWrite32(0x1f8010a0,a0);
1464         psxHwWrite32(0x1f8010a4,0);
1465         psxHwWrite32(0x1f8010a8,0x010000401);
1466         pc0 = ra;
1467 }
1468
1469 void psxBios_sys_a0_4c() { // 0x4c GPU relate
1470         psxHwWrite32(0x1f8010a8,0x00000401);
1471         GPU_writeData(0x0400000);
1472         GPU_writeData(0x0200000);
1473         GPU_writeData(0x0100000);
1474         v0 = 0x1f801814;
1475         pc0 = ra;
1476 }
1477
1478 void psxBios_GPU_GetGPUStatus() { // 0x4d
1479         v0 = GPU_readStatus();
1480         pc0 = ra;
1481 }
1482
1483 #undef s_addr
1484
1485 void psxBios_LoadExec() { // 51
1486         EXEC *header = (EXEC*)PSXM(0xf000);
1487         u32 s_addr, s_size;
1488
1489 #ifdef PSXBIOS_LOG
1490         PSXBIOS_LOG("psxBios_%s: %s: %x,%x\n", biosA0n[0x51], Ra0, a1, a2);
1491 #endif
1492         s_addr = a1; s_size = a2;
1493
1494         a1 = 0xf000;
1495         psxBios_Load();
1496
1497         header->S_addr = s_addr;
1498         header->s_size = s_size;
1499
1500         a0 = 0xf000; a1 = 0; a2 = 0;
1501         psxBios_Exec();
1502 }
1503
1504 void psxBios__bu_init() { // 70
1505 #ifdef PSXBIOS_LOG
1506         PSXBIOS_LOG("psxBios_%s\n", biosA0n[0x70]);
1507 #endif
1508
1509         DeliverEvent(0x11, 0x2); // 0xf0000011, 0x0004
1510         DeliverEvent(0x81, 0x2); // 0xf4000001, 0x0004
1511
1512         pc0 = ra;
1513 }
1514
1515 void psxBios__96_init() { // 71
1516 #ifdef PSXBIOS_LOG
1517         PSXBIOS_LOG("psxBios_%s\n", biosA0n[0x71]);
1518 #endif
1519
1520         pc0 = ra;
1521 }
1522
1523 void psxBios__96_remove() { // 72
1524 #ifdef PSXBIOS_LOG
1525         PSXBIOS_LOG("psxBios_%s\n", biosA0n[0x72]);
1526 #endif
1527
1528         pc0 = ra;
1529 }
1530
1531 void psxBios_SetMem() { // 9f
1532         u32 new = psxHu32(0x1060);
1533
1534 #ifdef PSXBIOS_LOG
1535         PSXBIOS_LOG("psxBios_%s: %x, %x\n", biosA0n[0x9f], a0, a1);
1536 #endif
1537
1538         switch(a0) {
1539                 case 2:
1540                         psxHu32ref(0x1060) = SWAP32(new);
1541                         psxMu32ref(0x060) = a0;
1542                         SysPrintf("Change effective memory : %d MBytes\n",a0);
1543                         break;
1544
1545                 case 8:
1546                         psxHu32ref(0x1060) = SWAP32(new | 0x300);
1547                         psxMu32ref(0x060) = a0;
1548                         SysPrintf("Change effective memory : %d MBytes\n",a0);
1549
1550                 default:
1551                         SysPrintf("Effective memory must be 2/8 MBytes\n");
1552                 break;
1553         }
1554
1555         pc0 = ra;
1556 }
1557
1558 void psxBios__card_info() { // ab
1559 #ifdef PSXBIOS_LOG
1560         PSXBIOS_LOG("psxBios_%s: %x\n", biosA0n[0xab], a0);
1561 #endif
1562         u32 ret;
1563         card_active_chan = a0;
1564
1565         switch (card_active_chan)
1566         {
1567         case 0x00: case 0x01: case 0x02: case 0x03:
1568                 ret = Config.Mcd1[0] ? 0x2 : 0x8;
1569                 break;
1570         case 0x10: case 0x11: case 0x12: case 0x13:
1571                 ret = Config.Mcd2[0] ? 0x2 : 0x8;
1572                 break;
1573         default:
1574 #ifdef PSXBIOS_LOG
1575                 PSXBIOS_LOG("psxBios_%s: UNKNOWN PORT 0x%x\n", biosA0n[0xab], card_active_chan);
1576 #endif
1577                 ret = 0x11;
1578                 break;
1579         }
1580
1581 //      DeliverEvent(0x11, 0x2); // 0xf0000011, 0x0004
1582 //      DeliverEvent(0x11, 0x2); // 0xf0000011, 0x0004
1583         DeliverEvent(0x81, 0x2); // 0xf4000001, 0x0004
1584         DeliverEvent(0x81, ret); // 0xf4000001, 0x0004
1585
1586         v0 = 1; pc0 = ra;
1587 }
1588
1589 void psxBios__card_load() { // ac
1590 #ifdef PSXBIOS_LOG
1591         PSXBIOS_LOG("psxBios_%s: %x\n", biosA0n[0xac], a0);
1592 #endif
1593
1594         card_active_chan = a0;
1595
1596 //      DeliverEvent(0x11, 0x2); // 0xf0000011, 0x0004
1597         DeliverEvent(0x81, 0x2); // 0xf4000001, 0x0004
1598
1599         v0 = 1; pc0 = ra;
1600 }
1601
1602 /* System calls B0 */
1603
1604 void psxBios_SetRCnt() { // 02
1605 #ifdef PSXBIOS_LOG
1606         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x02]);
1607 #endif
1608
1609         a0&= 0x3;
1610         if (a0 != 3) {
1611                 u32 mode=0;
1612
1613                 psxRcntWtarget(a0, a1);
1614                 if (a2&0x1000) mode|= 0x050; // Interrupt Mode
1615                 if (a2&0x0100) mode|= 0x008; // Count to 0xffff
1616                 if (a2&0x0010) mode|= 0x001; // Timer stop mode
1617                 if (a0 == 2) { if (a2&0x0001) mode|= 0x200; } // System Clock mode
1618                 else         { if (a2&0x0001) mode|= 0x100; } // System Clock mode
1619
1620                 psxRcntWmode(a0, mode);
1621         }
1622         pc0 = ra;
1623 }
1624
1625 void psxBios_GetRCnt() { // 03
1626 #ifdef PSXBIOS_LOG
1627         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x03]);
1628 #endif
1629
1630         a0&= 0x3;
1631         if (a0 != 3) v0 = psxRcntRcount(a0);
1632         else v0 = 0;
1633         pc0 = ra;
1634 }
1635
1636 void psxBios_StartRCnt() { // 04
1637 #ifdef PSXBIOS_LOG
1638         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x04]);
1639 #endif
1640
1641         a0&= 0x3;
1642         if (a0 != 3) psxHu32ref(0x1074)|= SWAP32((u32)((1<<(a0+4))));
1643         else psxHu32ref(0x1074)|= SWAPu32(0x1);
1644         v0 = 1; pc0 = ra;
1645 }
1646
1647 void psxBios_StopRCnt() { // 05
1648 #ifdef PSXBIOS_LOG
1649         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x05]);
1650 #endif
1651
1652         a0&= 0x3;
1653         if (a0 != 3) psxHu32ref(0x1074)&= SWAP32((u32)(~(1<<(a0+4))));
1654         else psxHu32ref(0x1074)&= SWAPu32(~0x1);
1655         pc0 = ra;
1656 }
1657
1658 void psxBios_ResetRCnt() { // 06
1659 #ifdef PSXBIOS_LOG
1660         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x06]);
1661 #endif
1662
1663         a0&= 0x3;
1664         if (a0 != 3) {
1665                 psxRcntWmode(a0, 0);
1666                 psxRcntWtarget(a0, 0);
1667                 psxRcntWcount(a0, 0);
1668         }
1669         pc0 = ra;
1670 }
1671
1672
1673 /* gets ev for use with Event */
1674 #define GetEv() \
1675         ev = (a0 >> 24) & 0xf; \
1676         if (ev == 0xf) ev = 0x5; \
1677         ev*= 32; \
1678         ev+= a0&0x1f;
1679
1680 /* gets spec for use with Event */
1681 #define GetSpec() \
1682         spec = 0; \
1683         switch (a1) { \
1684                 case 0x0301: spec = 16; break; \
1685                 case 0x0302: spec = 17; break; \
1686                 default: \
1687                         for (i=0; i<16; i++) if (a1 & (1 << i)) { spec = i; break; } \
1688                         break; \
1689         }
1690
1691 void psxBios_DeliverEvent() { // 07
1692         int ev, spec;
1693         int i;
1694
1695         GetEv();
1696         GetSpec();
1697
1698 #ifdef PSXBIOS_LOG
1699         PSXBIOS_LOG("psxBios_%s %x,%x\n", biosB0n[0x07], ev, spec);
1700 #endif
1701
1702         DeliverEvent(ev, spec);
1703
1704         pc0 = ra;
1705 }
1706
1707 void psxBios_OpenEvent() { // 08
1708         int ev, spec;
1709         int i;
1710
1711         GetEv();
1712         GetSpec();
1713
1714 #ifdef PSXBIOS_LOG
1715         PSXBIOS_LOG("psxBios_%s %x,%x (class:%x, spec:%x, mode:%x, func:%x)\n", biosB0n[0x08], ev, spec, a0, a1, a2, a3);
1716 #endif
1717
1718         Event[ev][spec].status = EvStWAIT;
1719         Event[ev][spec].mode = a2;
1720         Event[ev][spec].fhandler = a3;
1721
1722         v0 = ev | (spec << 8);
1723         pc0 = ra;
1724 }
1725
1726 void psxBios_CloseEvent() { // 09
1727         int ev, spec;
1728
1729         ev   = a0 & 0xff;
1730         spec = (a0 >> 8) & 0xff;
1731
1732 #ifdef PSXBIOS_LOG
1733         PSXBIOS_LOG("psxBios_%s %x,%x\n", biosB0n[0x09], ev, spec);
1734 #endif
1735
1736         Event[ev][spec].status = EvStUNUSED;
1737
1738         v0 = 1; pc0 = ra;
1739 }
1740
1741 void psxBios_WaitEvent() { // 0a
1742         int ev, spec;
1743
1744         ev   = a0 & 0xff;
1745         spec = (a0 >> 8) & 0xff;
1746 #ifdef PSXBIOS_LOG
1747         PSXBIOS_LOG("psxBios_%s %x,%x\n", biosB0n[0x0a], ev, spec);
1748 #endif
1749         if (Event[ev][spec].status == EvStUNUSED)
1750         {
1751                 v0 = 0;
1752                 pc0 = ra;
1753                 return;
1754         }
1755
1756         if (Event[ev][spec].status == EvStALREADY)
1757         {
1758                 /* Callback events (mode=EvMdINTR) do never set the ready flag (and thus WaitEvent would hang forever). */
1759                 if (!(Event[ev][spec].mode == EvMdINTR)) Event[ev][spec].status = EvStACTIVE;
1760                 v0 = 1;
1761                 pc0 = ra;
1762                 return;
1763         }
1764
1765         v0 = 0;
1766         pc0 = ra;
1767 }
1768
1769 void psxBios_TestEvent() { // 0b
1770         int ev, spec;
1771
1772         ev   = a0 & 0xff;
1773         spec = (a0 >> 8) & 0xff;
1774
1775         if (Event[ev][spec].status == EvStALREADY)
1776         {
1777                 if (!(Event[ev][spec].mode == EvMdINTR)) Event[ev][spec].status = EvStACTIVE;
1778                 v0 = 1;
1779         }
1780         else
1781         {
1782                 v0 = 0;
1783         }
1784
1785 #ifdef PSXBIOS_LOG
1786         PSXBIOS_LOG("psxBios_%s %x,%x: %x\n", biosB0n[0x0b], ev, spec, v0);
1787 #endif
1788
1789         pc0 = ra;
1790 }
1791
1792 void psxBios_EnableEvent() { // 0c
1793         int ev, spec;
1794
1795         ev   = a0 & 0xff;
1796         spec = (a0 >> 8) & 0xff;
1797
1798 #ifdef PSXBIOS_LOG
1799         PSXBIOS_LOG("psxBios_%s %x,%x\n", biosB0n[0x0c], ev, spec);
1800 #endif
1801
1802         Event[ev][spec].status = EvStACTIVE;
1803
1804         v0 = 1; pc0 = ra;
1805 }
1806
1807 void psxBios_DisableEvent() { // 0d
1808         int ev, spec;
1809
1810         ev   = a0 & 0xff;
1811         spec = (a0 >> 8) & 0xff;
1812
1813 #ifdef PSXBIOS_LOG
1814         PSXBIOS_LOG("psxBios_%s %x,%x\n", biosB0n[0x0d], ev, spec);
1815 #endif
1816
1817         Event[ev][spec].status = EvStWAIT;
1818
1819         v0 = 1; pc0 = ra;
1820 }
1821
1822 /*
1823  *      long OpenTh(long (*func)(), unsigned long sp, unsigned long gp);
1824  */
1825
1826 void psxBios_OpenTh() { // 0e
1827         int th;
1828
1829         for (th=1; th<8; th++)
1830         {
1831                 if (Thread[th].status == 0) break;
1832
1833         }
1834         if (th == 8) {
1835                 // Feb 2019 - Added out-of-bounds fix caught by cppcheck:
1836                 // When no free TCB is found, return 0xffffffff according to Nocash doc.
1837 #ifdef PSXBIOS_LOG
1838                 PSXBIOS_LOG("\t%s() WARNING! No Free TCBs found!\n", __func__);
1839 #endif
1840                 v0 = 0xffffffff;
1841                 pc0 = ra;
1842                 return;
1843         }
1844 #ifdef PSXBIOS_LOG
1845         PSXBIOS_LOG("psxBios_%s: %x\n", biosB0n[0x0e], th);
1846 #endif
1847
1848         Thread[th].status = 1;
1849         Thread[th].func    = a0;
1850         Thread[th].reg[29] = a1;
1851         Thread[th].reg[28] = a2;
1852
1853         v0 = th; pc0 = ra;
1854 }
1855
1856 /*
1857  *      int CloseTh(long thread);
1858  */
1859
1860 void psxBios_CloseTh() { // 0f
1861         int th = a0 & 0xff;
1862
1863 #ifdef PSXBIOS_LOG
1864         PSXBIOS_LOG("psxBios_%s: %x\n", biosB0n[0x0f], th);
1865 #endif
1866
1867         if (Thread[th].status == 0) {
1868                 v0 = 0;
1869         } else {
1870                 Thread[th].status = 0;
1871                 v0 = 1;
1872         }
1873
1874         pc0 = ra;
1875 }
1876
1877 /*
1878  *      int ChangeTh(long thread);
1879  */
1880
1881 void psxBios_ChangeTh() { // 10
1882         int th = a0 & 0xff;
1883
1884 #ifdef PSXBIOS_LOG
1885 //      PSXBIOS_LOG("psxBios_%s: %x\n", biosB0n[0x10], th);
1886 #endif
1887
1888         if (Thread[th].status == 0 || CurThread == th) {
1889                 v0 = 0;
1890
1891                 pc0 = ra;
1892         } else {
1893                 v0 = 1;
1894
1895                 if (Thread[CurThread].status == 2) {
1896                         Thread[CurThread].status = 1;
1897                         Thread[CurThread].func = ra;
1898                         memcpy(Thread[CurThread].reg, psxRegs.GPR.r, 32*4);
1899                 }
1900
1901                 memcpy(psxRegs.GPR.r, Thread[th].reg, 32*4);
1902                 pc0 = Thread[th].func;
1903                 Thread[th].status = 2;
1904                 CurThread = th;
1905         }
1906 }
1907
1908 void psxBios_InitPAD() { // 0x12
1909 #ifdef PSXBIOS_LOG
1910         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x12]);
1911 #endif
1912
1913         pad_buf1 = (char*)Ra0;
1914         pad_buf1len = a1;
1915         pad_buf2 = (char*)Ra2;
1916         pad_buf2len = a3;
1917
1918         v0 = 1; pc0 = ra;
1919 }
1920
1921 void psxBios_StartPAD() { // 13
1922 #ifdef PSXBIOS_LOG
1923         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x13]);
1924 #endif
1925         pad_stopped = 0;
1926         psxHwWrite16(0x1f801074, (unsigned short)(psxHwRead16(0x1f801074) | 0x1));
1927         psxRegs.CP0.n.Status |= 0x401;
1928         pc0 = ra;
1929 }
1930
1931 void psxBios_StopPAD() { // 14
1932 #ifdef PSXBIOS_LOG
1933         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x14]);
1934 #endif
1935         pad_stopped = 1;
1936         pad_buf1 = NULL;
1937         pad_buf2 = NULL;
1938         pc0 = ra;
1939 }
1940
1941 void psxBios_PAD_init() { // 15
1942 #ifdef PSXBIOS_LOG
1943         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x15]);
1944 #endif
1945         if (!(a0 == 0x20000000 || a0 == 0x20000001))
1946         {
1947                 v0 = 0;
1948                 pc0 = ra;
1949                 return;
1950         }
1951         psxHwWrite16(0x1f801074, (u16)(psxHwRead16(0x1f801074) | 0x1));
1952         pad_buf = (int *)Ra1;
1953         *pad_buf = -1;
1954         psxRegs.CP0.n.Status |= 0x401;
1955         v0 = 2;
1956         pc0 = ra;
1957 }
1958
1959 void psxBios_PAD_dr() { // 16
1960 #ifdef PSXBIOS_LOG
1961         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x16]);
1962 #endif
1963
1964         v0 = -1; pc0 = ra;
1965 }
1966
1967 void psxBios_ReturnFromException() { // 17
1968         LoadRegs();
1969
1970         pc0 = psxRegs.CP0.n.EPC;
1971         if (psxRegs.CP0.n.Cause & 0x80000000) pc0 += 4;
1972
1973         psxRegs.CP0.n.Status = (psxRegs.CP0.n.Status & 0xfffffff0) |
1974                                                   ((psxRegs.CP0.n.Status & 0x3c) >> 2);
1975 }
1976
1977 void psxBios_ResetEntryInt() { // 18
1978 #ifdef PSXBIOS_LOG
1979         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x18]);
1980 #endif
1981
1982         jmp_int = NULL;
1983         pc0 = ra;
1984 }
1985
1986 void psxBios_HookEntryInt() { // 19
1987 #ifdef PSXBIOS_LOG
1988         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x19]);
1989 #endif
1990
1991         jmp_int = (u32*)Ra0;
1992         pc0 = ra;
1993 }
1994
1995 void psxBios_UnDeliverEvent() { // 0x20
1996         int ev, spec;
1997         int i;
1998
1999         GetEv();
2000         GetSpec();
2001
2002 #ifdef PSXBIOS_LOG
2003         PSXBIOS_LOG("psxBios_%s %x,%x\n", biosB0n[0x20], ev, spec);
2004 #endif
2005
2006         if (Event[ev][spec].status == EvStALREADY &&
2007                 Event[ev][spec].mode == EvMdNOINTR)
2008                 Event[ev][spec].status = EvStACTIVE;
2009
2010         pc0 = ra;
2011 }
2012
2013 char ffile[64], *pfile;
2014 int nfile;
2015 static void buopen(int mcd, u8 *ptr, u8 *cfg)
2016 {
2017         int i;
2018         u8 *fptr = ptr;
2019
2020         strcpy(FDesc[1 + mcd].name, Ra0+5);
2021         FDesc[1 + mcd].offset = 0;
2022         FDesc[1 + mcd].mode   = a1;
2023
2024         for (i=1; i<16; i++) {
2025                 fptr += 128;
2026                 if ((*fptr & 0xF0) != 0x50) continue;
2027                 if (strcmp(FDesc[1 + mcd].name, fptr+0xa)) continue;
2028                 FDesc[1 + mcd].mcfile = i;
2029                 SysPrintf("open %s\n", fptr+0xa);
2030                 v0 = 1 + mcd;
2031                 break;
2032         }
2033         if (a1 & 0x200 && v0 == -1) { /* FCREAT */
2034                 fptr = ptr;
2035                 for (i=1; i<16; i++) {
2036                         int j, xor, nblk = a1 >> 16;
2037                         u8 *pptr, *fptr2;
2038
2039                         fptr += 128;
2040                         if ((*fptr & 0xF0) != 0xa0) continue;
2041
2042                         FDesc[1 + mcd].mcfile = i;
2043                         fptr[0] = 0x51;
2044                         fptr[4] = 0x00;
2045                         fptr[5] = 0x20 * nblk;
2046                         fptr[6] = 0x00;
2047                         fptr[7] = 0x00;
2048                         strcpy(fptr+0xa, FDesc[1 + mcd].name);
2049                         pptr = fptr2 = fptr;
2050                         for(j=2; j<=nblk; j++) {
2051                                 int k;
2052                                 for(i++; i<16; i++) {
2053                                         fptr2 += 128;
2054
2055                                         memset(fptr2, 0, 128);
2056                                         fptr2[0] = j < nblk ? 0x52 : 0x53;
2057                                         pptr[8] = i - 1;
2058                                         pptr[9] = 0;
2059                                         for (k=0, xor=0; k<127; k++) xor^= pptr[k];
2060                                         pptr[127] = xor;
2061                                         pptr = fptr2;
2062                                         break;
2063                                 }
2064                                 /* shouldn't this return ENOSPC if i == 16? */
2065                         }
2066                         pptr[8] = pptr[9] = 0xff;
2067                         for (j=0, xor=0; j<127; j++) xor^= pptr[j];
2068                         pptr[127] = xor;
2069                         SysPrintf("openC %s %d\n", ptr, nblk);
2070                         v0 = 1 + mcd;
2071                         /* just go ahead and resave them all */
2072                         SaveMcd(cfg, ptr, 128, 128 * 15);
2073                         break;
2074                 }
2075                 /* shouldn't this return ENOSPC if i == 16? */
2076         }
2077 }
2078
2079 /*
2080  *      int open(char *name , int mode);
2081  */
2082
2083 void psxBios_open() { // 0x32
2084         int i;
2085         char *ptr;
2086         void *pa0 = Ra0;
2087
2088 #ifdef PSXBIOS_LOG
2089         PSXBIOS_LOG("psxBios_%s: %s,%x\n", biosB0n[0x32], Ra0, a1);
2090 #endif
2091
2092         v0 = -1;
2093
2094         if (pa0) {
2095                 if (!strncmp(pa0, "bu00", 4)) {
2096                         buopen(1, Mcd1Data, Config.Mcd1);
2097                 }
2098
2099                 if (!strncmp(pa0, "bu10", 4)) {
2100                         buopen(2, Mcd2Data, Config.Mcd2);
2101                 }
2102         }
2103
2104         pc0 = ra;
2105 }
2106
2107 /*
2108  *      int lseek(int fd , int offset , int whence);
2109  */
2110
2111 void psxBios_lseek() { // 0x33
2112 #ifdef PSXBIOS_LOG
2113         PSXBIOS_LOG("psxBios_%s: %x, %x, %x\n", biosB0n[0x33], a0, a1, a2);
2114 #endif
2115
2116         switch (a2) {
2117                 case 0: // SEEK_SET
2118                         FDesc[a0].offset = a1;
2119                         v0 = a1;
2120 //                      DeliverEvent(0x11, 0x2); // 0xf0000011, 0x0004
2121 //                      DeliverEvent(0x81, 0x2); // 0xf4000001, 0x0004
2122                         break;
2123
2124                 case 1: // SEEK_CUR
2125                         FDesc[a0].offset+= a1;
2126                         v0 = FDesc[a0].offset;
2127                         break;
2128         }
2129
2130         pc0 = ra;
2131 }
2132
2133
2134 /*
2135  *      int read(int fd , void *buf , int nbytes);
2136  */
2137
2138 void psxBios_read() { // 0x34
2139         char *ptr;
2140         void *pa1 = Ra1;
2141
2142 #ifdef PSXBIOS_LOG
2143         PSXBIOS_LOG("psxBios_%s: %x, %x, %x\n", biosB0n[0x34], a0, a1, a2);
2144 #endif
2145
2146         v0 = -1;
2147
2148         if (pa1) {
2149                 switch (a0) {
2150                         case 2: buread(pa1, 1, a2); break;
2151                         case 3: buread(pa1, 2, a2); break;
2152                 }
2153         }
2154
2155         pc0 = ra;
2156 }
2157
2158 /*
2159  *      int write(int fd , void *buf , int nbytes);
2160  */
2161
2162 void psxBios_write() { // 0x35/0x03
2163         char *ptr;
2164         void *pa1 = Ra1;
2165
2166 #ifdef PSXBIOS_LOG
2167         PSXBIOS_LOG("psxBios_%s: %x,%x,%x\n", biosB0n[0x35], a0, a1, a2);
2168 #endif
2169
2170         v0 = -1;
2171         if (!pa1) {
2172                 pc0 = ra;
2173                 return;
2174         }
2175
2176         if (a0 == 1) { // stdout
2177                 char *ptr = pa1;
2178
2179                 v0 = a2;
2180                 while (a2 > 0) {
2181                         SysPrintf("%c", *ptr++); a2--;
2182                 }
2183                 pc0 = ra; return;
2184         }
2185
2186         switch (a0) {
2187                 case 2: buwrite(pa1, 1, a2); break;
2188                 case 3: buwrite(pa1, 2, a2); break;
2189         }
2190
2191         pc0 = ra;
2192 }
2193
2194 /*
2195  *      int close(int fd);
2196  */
2197
2198 void psxBios_close() { // 0x36
2199 #ifdef PSXBIOS_LOG
2200         PSXBIOS_LOG("psxBios_%s: %x\n", biosB0n[0x36], a0);
2201 #endif
2202
2203         v0 = a0;
2204         pc0 = ra;
2205 }
2206
2207 void psxBios_putchar() { // 3d
2208         SysPrintf("%c", (char)a0);
2209         pc0 = ra;
2210 }
2211
2212 void psxBios_puts() { // 3e/3f
2213         SysPrintf("%s", Ra0);
2214         pc0 = ra;
2215 }
2216
2217
2218 /* To avoid any issues with different behaviour when using the libc's own strlen instead.
2219  * We want to mimic the PSX's behaviour in this case for bufile. */
2220 static size_t strlen_internal(char* p)
2221 {
2222         size_t size_of_array = 0;
2223         while (*p++) size_of_array++;
2224         return size_of_array;
2225 }
2226
2227 #define bufile(mcd) { \
2228         size_t size_of_name = strlen_internal(dir->name); \
2229         while (nfile < 16) { \
2230                 int match=1; \
2231  \
2232                 ptr = Mcd##mcd##Data + 128 * (nfile + 1); \
2233                 nfile++; \
2234                 if ((*ptr & 0xF0) != 0x50) continue; \
2235                 /* Bug link files show up as free block. */ \
2236                 if (!ptr[0xa]) continue; \
2237                 ptr+= 0xa; \
2238                 if (pfile[0] == 0) { \
2239                         strncpy(dir->name, ptr, sizeof(dir->name) - 1); \
2240                         if (size_of_name < sizeof(dir->name)) dir->name[size_of_name] = '\0'; \
2241                 } else for (i=0; i<20; i++) { \
2242                         if (pfile[i] == ptr[i]) { \
2243                                                                 dir->name[i] = ptr[i]; continue; } \
2244                         if (pfile[i] == '?') { \
2245                                 dir->name[i] = ptr[i]; continue; } \
2246                         if (pfile[i] == '*') { \
2247                                 strcpy(dir->name+i, ptr+i); break; } \
2248                         match = 0; break; \
2249                 } \
2250                 SysPrintf("%d : %s = %s + %s (match=%d)\n", nfile, dir->name, pfile, ptr, match); \
2251                 if (match == 0) { continue; } \
2252                 dir->size = 8192; \
2253                 v0 = _dir; \
2254                 break; \
2255         } \
2256 }
2257
2258 /*
2259  *      struct DIRENTRY* firstfile(char *name,struct DIRENTRY *dir);
2260  */
2261
2262 void psxBios_firstfile() { // 42
2263         struct DIRENTRY *dir = (struct DIRENTRY *)Ra1;
2264         void *pa0 = Ra0;
2265         u32 _dir = a1;
2266         char *ptr;
2267         int i;
2268
2269 #ifdef PSXBIOS_LOG
2270         PSXBIOS_LOG("psxBios_%s: %s\n", biosB0n[0x42], Ra0);
2271 #endif
2272
2273         v0 = 0;
2274
2275         if (pa0) {
2276                 strcpy(ffile, pa0);
2277                 pfile = ffile+5;
2278                 nfile = 1;
2279                 if (!strncmp(pa0, "bu00", 4)) {
2280                         // firstfile() calls _card_read() internally, so deliver it's event
2281                         DeliverEvent(0x11, 0x2);
2282                         bufile(1);
2283                 } else if (!strncmp(pa0, "bu10", 4)) {
2284                         // firstfile() calls _card_read() internally, so deliver it's event
2285                         DeliverEvent(0x11, 0x2);
2286                         bufile(2);
2287                 }
2288         }
2289
2290         pc0 = ra;
2291 }
2292
2293 /*
2294  *      struct DIRENTRY* nextfile(struct DIRENTRY *dir);
2295  */
2296
2297 void psxBios_nextfile() { // 43
2298         struct DIRENTRY *dir = (struct DIRENTRY *)Ra0;
2299         u32 _dir = a0;
2300         char *ptr;
2301         int i;
2302
2303 #ifdef PSXBIOS_LOG
2304         PSXBIOS_LOG("psxBios_%s: %s\n", biosB0n[0x43], dir->name);
2305 #endif
2306
2307         v0 = 0;
2308
2309         if (!strncmp(ffile, "bu00", 4)) {
2310                 bufile(1);
2311         }
2312
2313         if (!strncmp(ffile, "bu10", 4)) {
2314                 bufile(2);
2315         }
2316
2317         pc0 = ra;
2318 }
2319
2320 #define burename(mcd) { \
2321         for (i=1; i<16; i++) { \
2322                 int namelen, j, xor = 0; \
2323                 ptr = Mcd##mcd##Data + 128 * i; \
2324                 if ((*ptr & 0xF0) != 0x50) continue; \
2325                 if (strcmp(Ra0+5, ptr+0xa)) continue; \
2326                 namelen = strlen(Ra1+5); \
2327                 memcpy(ptr+0xa, Ra1+5, namelen); \
2328                 memset(ptr+0xa+namelen, 0, 0x75-namelen); \
2329                 for (j=0; j<127; j++) xor^= ptr[j]; \
2330                 ptr[127] = xor; \
2331                 SaveMcd(Config.Mcd##mcd, Mcd##mcd##Data, 128 * i + 0xa, 0x76); \
2332                 v0 = 1; \
2333                 break; \
2334         } \
2335 }
2336
2337 /*
2338  *      int rename(char *old, char *new);
2339  */
2340
2341 void psxBios_rename() { // 44
2342         void *pa0 = Ra0;
2343         void *pa1 = Ra1;
2344         char *ptr;
2345         int i;
2346
2347 #ifdef PSXBIOS_LOG
2348         PSXBIOS_LOG("psxBios_%s: %s,%s\n", biosB0n[0x44], Ra0, Ra1);
2349 #endif
2350
2351         v0 = 0;
2352
2353         if (pa0 && pa1) {
2354                 if (!strncmp(pa0, "bu00", 4) && !strncmp(pa1, "bu00", 4)) {
2355                         burename(1);
2356                 }
2357
2358                 if (!strncmp(pa0, "bu10", 4) && !strncmp(pa1, "bu10", 4)) {
2359                         burename(2);
2360                 }
2361         }
2362
2363         pc0 = ra;
2364 }
2365
2366
2367 #define budelete(mcd) { \
2368         for (i=1; i<16; i++) { \
2369                 ptr = Mcd##mcd##Data + 128 * i; \
2370                 if ((*ptr & 0xF0) != 0x50) continue; \
2371                 if (strcmp(Ra0+5, ptr+0xa)) continue; \
2372                 *ptr = (*ptr & 0xf) | 0xA0; \
2373                 SaveMcd(Config.Mcd##mcd, Mcd##mcd##Data, 128 * i, 1); \
2374                 SysPrintf("delete %s\n", ptr+0xa); \
2375                 v0 = 1; \
2376                 break; \
2377         } \
2378 }
2379
2380 /*
2381  *      int delete(char *name);
2382  */
2383
2384 void psxBios_delete() { // 45
2385         void *pa0 = Ra0;
2386         char *ptr;
2387         int i;
2388
2389 #ifdef PSXBIOS_LOG
2390         PSXBIOS_LOG("psxBios_%s: %s\n", biosB0n[0x45], Ra0);
2391 #endif
2392
2393         v0 = 0;
2394
2395         if (pa0) {
2396                 if (!strncmp(pa0, "bu00", 4)) {
2397                         budelete(1);
2398                 }
2399
2400                 if (!strncmp(pa0, "bu10", 4)) {
2401                         budelete(2);
2402                 }
2403         }
2404
2405         pc0 = ra;
2406 }
2407
2408 void psxBios_InitCARD() { // 4a
2409 #ifdef PSXBIOS_LOG
2410         PSXBIOS_LOG("psxBios_%s: %x\n", biosB0n[0x4a], a0);
2411 #endif
2412
2413         CardState = 0;
2414
2415         pc0 = ra;
2416 }
2417
2418 void psxBios_StartCARD() { // 4b
2419 #ifdef PSXBIOS_LOG
2420         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x4b]);
2421 #endif
2422
2423         if (CardState == 0) CardState = 1;
2424
2425         pc0 = ra;
2426 }
2427
2428 void psxBios_StopCARD() { // 4c
2429 #ifdef PSXBIOS_LOG
2430         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x4c]);
2431 #endif
2432
2433         if (CardState == 1) CardState = 0;
2434
2435         pc0 = ra;
2436 }
2437
2438 void psxBios__card_write() { // 0x4e
2439         void *pa2 = Ra2;
2440         int port;
2441
2442 #ifdef PSXBIOS_LOG
2443         PSXBIOS_LOG("psxBios_%s: %x,%x,%x\n", biosB0n[0x4e], a0, a1, a2);
2444 #endif
2445         /* Function also accepts sector 400h (a bug) */
2446         if (!(a1 <= 0x400))
2447         {
2448                 /* Invalid sectors */
2449                 v0 = 0; pc0 = ra;
2450                 return;
2451         }
2452         card_active_chan = a0;
2453         port = a0 >> 4;
2454
2455         if (pa2) {
2456                 if (port == 0) {
2457                         memcpy(Mcd1Data + a1 * 128, pa2, 128);
2458                         SaveMcd(Config.Mcd1, Mcd1Data, a1 * 128, 128);
2459                 } else {
2460                         memcpy(Mcd2Data + a1 * 128, pa2, 128);
2461                         SaveMcd(Config.Mcd2, Mcd2Data, a1 * 128, 128);
2462                 }
2463         }
2464
2465         DeliverEvent(0x11, 0x2); // 0xf0000011, 0x0004
2466 //      DeliverEvent(0x81, 0x2); // 0xf4000001, 0x0004
2467
2468         v0 = 1; pc0 = ra;
2469 }
2470
2471 void psxBios__card_read() { // 0x4f
2472         void *pa2 = Ra2;
2473         int port;
2474
2475 #ifdef PSXBIOS_LOG
2476         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x4f]);
2477 #endif
2478         /* Function also accepts sector 400h (a bug) */
2479         if (!(a1 <= 0x400))
2480         {
2481                 /* Invalid sectors */
2482                 v0 = 0; pc0 = ra;
2483                 return;
2484         }
2485         card_active_chan = a0;
2486         port = a0 >> 4;
2487
2488         if (pa2) {
2489                 if (port == 0) {
2490                         memcpy(pa2, Mcd1Data + a1 * 128, 128);
2491                 } else {
2492                         memcpy(pa2, Mcd2Data + a1 * 128, 128);
2493                 }
2494         }
2495
2496         DeliverEvent(0x11, 0x2); // 0xf0000011, 0x0004
2497 //      DeliverEvent(0x81, 0x2); // 0xf4000001, 0x0004
2498
2499         v0 = 1; pc0 = ra;
2500 }
2501
2502 void psxBios__new_card() { // 0x50
2503 #ifdef PSXBIOS_LOG
2504         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x50]);
2505 #endif
2506
2507         pc0 = ra;
2508 }
2509
2510 /* According to a user, this allows Final Fantasy Tactics to save/load properly */
2511 void psxBios__get_error(void) // 55
2512 {
2513         v0 = 0;
2514         pc0 = ra;
2515 }
2516
2517 void psxBios_Krom2RawAdd() { // 0x51
2518         int i = 0;
2519
2520         const u32 table_8140[][2] = {
2521                 {0x8140, 0x0000}, {0x8180, 0x0762}, {0x81ad, 0x0cc6}, {0x81b8, 0x0ca8},
2522                 {0x81c0, 0x0f00}, {0x81c8, 0x0d98}, {0x81cf, 0x10c2}, {0x81da, 0x0e6a},
2523                 {0x81e9, 0x13ce}, {0x81f0, 0x102c}, {0x81f8, 0x1590}, {0x81fc, 0x111c},
2524                 {0x81fd, 0x1626}, {0x824f, 0x113a}, {0x8259, 0x20ee}, {0x8260, 0x1266},
2525                 {0x827a, 0x24cc}, {0x8281, 0x1572}, {0x829b, 0x28aa}, {0x829f, 0x187e},
2526                 {0x82f2, 0x32dc}, {0x8340, 0x2238}, {0x837f, 0x4362}, {0x8380, 0x299a},
2527                 {0x8397, 0x4632}, {0x839f, 0x2c4c}, {0x83b7, 0x49f2}, {0x83bf, 0x2f1c},
2528                 {0x83d7, 0x4db2}, {0x8440, 0x31ec}, {0x8461, 0x5dde}, {0x8470, 0x35ca},
2529                 {0x847f, 0x6162}, {0x8480, 0x378c}, {0x8492, 0x639c}, {0x849f, 0x39a8},
2530                 {0xffff, 0}
2531         };
2532
2533         const u32 table_889f[][2] = {
2534                 {0x889f, 0x3d68},  {0x8900, 0x40ec},  {0x897f, 0x4fb0},  {0x8a00, 0x56f4},
2535                 {0x8a7f, 0x65b8},  {0x8b00, 0x6cfc},  {0x8b7f, 0x7bc0},  {0x8c00, 0x8304},
2536                 {0x8c7f, 0x91c8},  {0x8d00, 0x990c},  {0x8d7f, 0xa7d0},  {0x8e00, 0xaf14},
2537                 {0x8e7f, 0xbdd8},  {0x8f00, 0xc51c},  {0x8f7f, 0xd3e0},  {0x9000, 0xdb24},
2538                 {0x907f, 0xe9e8},  {0x9100, 0xf12c},  {0x917f, 0xfff0},  {0x9200, 0x10734},
2539                 {0x927f, 0x115f8}, {0x9300, 0x11d3c}, {0x937f, 0x12c00}, {0x9400, 0x13344},
2540                 {0x947f, 0x14208}, {0x9500, 0x1494c}, {0x957f, 0x15810}, {0x9600, 0x15f54},
2541                 {0x967f, 0x16e18}, {0x9700, 0x1755c}, {0x977f, 0x18420}, {0x9800, 0x18b64},
2542                 {0xffff, 0}
2543         };
2544
2545         if (a0 >= 0x8140 && a0 <= 0x84be) {
2546                 while (table_8140[i][0] <= a0) i++;
2547                 a0 -= table_8140[i - 1][0];
2548                 v0 = 0xbfc66000 + (a0 * 0x1e + table_8140[i - 1][1]);
2549         } else if (a0 >= 0x889f && a0 <= 0x9872) {
2550                 while (table_889f[i][0] <= a0) i++;
2551                 a0 -= table_889f[i - 1][0];
2552                 v0 = 0xbfc66000 + (a0 * 0x1e + table_889f[i - 1][1]);
2553         } else {
2554                 v0 = 0xffffffff;
2555         }
2556
2557         pc0 = ra;
2558 }
2559
2560 void psxBios_GetC0Table() { // 56
2561 #ifdef PSXBIOS_LOG
2562         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x56]);
2563 #endif
2564
2565         v0 = 0x674; pc0 = ra;
2566 }
2567
2568 void psxBios_GetB0Table() { // 57
2569 #ifdef PSXBIOS_LOG
2570         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x57]);
2571 #endif
2572
2573         v0 = 0x874; pc0 = ra;
2574 }
2575
2576 void psxBios__card_chan() { // 0x58
2577 #ifdef PSXBIOS_LOG
2578         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x58]);
2579 #endif
2580
2581         v0 = card_active_chan;
2582         pc0 = ra;
2583 }
2584
2585 void psxBios_ChangeClearPad() { // 5b
2586 #ifdef PSXBIOS_LOG
2587         PSXBIOS_LOG("psxBios_%s: %x\n", biosB0n[0x5b], a0);
2588 #endif
2589
2590         pc0 = ra;
2591 }
2592
2593 void psxBios__card_status() { // 5c
2594 #ifdef PSXBIOS_LOG
2595         PSXBIOS_LOG("psxBios_%s: %x\n", biosB0n[0x5c], a0);
2596 #endif
2597
2598         v0 = 1;
2599         pc0 = ra;
2600 }
2601
2602 void psxBios__card_wait() { // 5d
2603 #ifdef PSXBIOS_LOG
2604         PSXBIOS_LOG("psxBios_%s: %x\n", biosB0n[0x5d], a0);
2605 #endif
2606
2607         v0 = 1;
2608         pc0 = ra;
2609 }
2610
2611 /* System calls C0 */
2612
2613 /*
2614  * int SysEnqIntRP(int index , long *queue);
2615  */
2616
2617 void psxBios_SysEnqIntRP() { // 02
2618 #ifdef PSXBIOS_LOG
2619         PSXBIOS_LOG("psxBios_%s: %x\n", biosC0n[0x02] ,a0);
2620 #endif
2621
2622         SysIntRP[a0] = a1;
2623
2624         v0 = 0; pc0 = ra;
2625 }
2626
2627 /*
2628  * int SysDeqIntRP(int index , long *queue);
2629  */
2630
2631 void psxBios_SysDeqIntRP() { // 03
2632 #ifdef PSXBIOS_LOG
2633         PSXBIOS_LOG("psxBios_%s: %x\n", biosC0n[0x03], a0);
2634 #endif
2635
2636         SysIntRP[a0] = 0;
2637
2638         v0 = 0; pc0 = ra;
2639 }
2640
2641 void psxBios_ChangeClearRCnt() { // 0a
2642         u32 *ptr;
2643
2644 #ifdef PSXBIOS_LOG
2645         PSXBIOS_LOG("psxBios_%s: %x, %x\n", biosC0n[0x0a], a0, a1);
2646 #endif
2647
2648         ptr = (u32*)PSXM((a0 << 2) + 0x8600);
2649         v0 = *ptr;
2650         *ptr = a1;
2651
2652 //      psxRegs.CP0.n.Status|= 0x404;
2653         pc0 = ra;
2654 }
2655
2656 void psxBios_dummy() {
2657 #ifdef PSXBIOS_LOG
2658         PSXBIOS_LOG("unk %x call: %x\n", pc0 & 0x1fffff, t1);
2659 #endif
2660         pc0 = ra;
2661 }
2662
2663 void (*biosA0[256])();
2664 void (*biosB0[256])();
2665 void (*biosC0[256])();
2666
2667 #include "sjisfont.h"
2668
2669 void psxBiosInit() {
2670         u32 base, size;
2671         u32 *ptr;
2672         int i;
2673         uLongf len;
2674
2675         for(i = 0; i < 256; i++) {
2676                 biosA0[i] = NULL;
2677                 biosB0[i] = NULL;
2678                 biosC0[i] = NULL;
2679         }
2680         biosA0[0x3e] = psxBios_puts;
2681         biosA0[0x3f] = psxBios_printf;
2682
2683         biosB0[0x3d] = psxBios_putchar;
2684         biosB0[0x3f] = psxBios_puts;
2685
2686         if (!Config.HLE) return;
2687
2688         for(i = 0; i < 256; i++) {
2689                 if (biosA0[i] == NULL) biosA0[i] = psxBios_dummy;
2690                 if (biosB0[i] == NULL) biosB0[i] = psxBios_dummy;
2691                 if (biosC0[i] == NULL) biosC0[i] = psxBios_dummy;
2692         }
2693
2694         biosA0[0x00] = psxBios_open;
2695         biosA0[0x01] = psxBios_lseek;
2696         biosA0[0x02] = psxBios_read;
2697         biosA0[0x03] = psxBios_write;
2698         biosA0[0x04] = psxBios_close;
2699         //biosA0[0x05] = psxBios_ioctl;
2700         //biosA0[0x06] = psxBios_exit;
2701         //biosA0[0x07] = psxBios_sys_a0_07;
2702         biosA0[0x08] = psxBios_getc;
2703         biosA0[0x09] = psxBios_putc;
2704         biosA0[0x0a] = psxBios_todigit;
2705         //biosA0[0x0b] = psxBios_atof;
2706         //biosA0[0x0c] = psxBios_strtoul;
2707         //biosA0[0x0d] = psxBios_strtol;
2708         biosA0[0x0e] = psxBios_abs;
2709         biosA0[0x0f] = psxBios_labs;
2710         biosA0[0x10] = psxBios_atoi;
2711         biosA0[0x11] = psxBios_atol;
2712         //biosA0[0x12] = psxBios_atob;
2713         biosA0[0x13] = psxBios_setjmp;
2714         biosA0[0x14] = psxBios_longjmp;
2715         biosA0[0x15] = psxBios_strcat;
2716         biosA0[0x16] = psxBios_strncat;
2717         biosA0[0x17] = psxBios_strcmp;
2718         biosA0[0x18] = psxBios_strncmp;
2719         biosA0[0x19] = psxBios_strcpy;
2720         biosA0[0x1a] = psxBios_strncpy;
2721         biosA0[0x1b] = psxBios_strlen;
2722         biosA0[0x1c] = psxBios_index;
2723         biosA0[0x1d] = psxBios_rindex;
2724         biosA0[0x1e] = psxBios_strchr;
2725         biosA0[0x1f] = psxBios_strrchr;
2726         biosA0[0x20] = psxBios_strpbrk;
2727         biosA0[0x21] = psxBios_strspn;
2728         biosA0[0x22] = psxBios_strcspn;
2729         biosA0[0x23] = psxBios_strtok;
2730         biosA0[0x24] = psxBios_strstr;
2731         biosA0[0x25] = psxBios_toupper;
2732         biosA0[0x26] = psxBios_tolower;
2733         biosA0[0x27] = psxBios_bcopy;
2734         biosA0[0x28] = psxBios_bzero;
2735         biosA0[0x29] = psxBios_bcmp;
2736         biosA0[0x2a] = psxBios_memcpy;
2737         biosA0[0x2b] = psxBios_memset;
2738         biosA0[0x2c] = psxBios_memmove;
2739         biosA0[0x2d] = psxBios_memcmp;
2740         biosA0[0x2e] = psxBios_memchr;
2741         biosA0[0x2f] = psxBios_rand;
2742         biosA0[0x30] = psxBios_srand;
2743         biosA0[0x31] = psxBios_qsort;
2744         //biosA0[0x32] = psxBios_strtod;
2745         biosA0[0x33] = psxBios_malloc;
2746         biosA0[0x34] = psxBios_free;
2747         //biosA0[0x35] = psxBios_lsearch;
2748         //biosA0[0x36] = psxBios_bsearch;
2749         biosA0[0x37] = psxBios_calloc;
2750         biosA0[0x38] = psxBios_realloc;
2751         biosA0[0x39] = psxBios_InitHeap;
2752         //biosA0[0x3a] = psxBios__exit;
2753         biosA0[0x3b] = psxBios_getchar;
2754         biosA0[0x3c] = psxBios_putchar;
2755         //biosA0[0x3d] = psxBios_gets;
2756         //biosA0[0x40] = psxBios_sys_a0_40;
2757         //biosA0[0x41] = psxBios_LoadTest;
2758         biosA0[0x42] = psxBios_Load;
2759         biosA0[0x43] = psxBios_Exec;
2760         biosA0[0x44] = psxBios_FlushCache;
2761         //biosA0[0x45] = psxBios_InstallInterruptHandler;
2762         biosA0[0x46] = psxBios_GPU_dw;
2763         biosA0[0x47] = psxBios_mem2vram;
2764         biosA0[0x48] = psxBios_SendGPU;
2765         biosA0[0x49] = psxBios_GPU_cw;
2766         biosA0[0x4a] = psxBios_GPU_cwb;
2767         biosA0[0x4b] = psxBios_GPU_SendPackets;
2768         biosA0[0x4c] = psxBios_sys_a0_4c;
2769         biosA0[0x4d] = psxBios_GPU_GetGPUStatus;
2770         //biosA0[0x4e] = psxBios_GPU_sync;
2771         //biosA0[0x4f] = psxBios_sys_a0_4f;
2772         //biosA0[0x50] = psxBios_sys_a0_50;
2773         biosA0[0x51] = psxBios_LoadExec;
2774         //biosA0[0x52] = psxBios_GetSysSp;
2775         //biosA0[0x53] = psxBios_sys_a0_53;
2776         //biosA0[0x54] = psxBios__96_init_a54;
2777         //biosA0[0x55] = psxBios__bu_init_a55;
2778         //biosA0[0x56] = psxBios__96_remove_a56;
2779         //biosA0[0x57] = psxBios_sys_a0_57;
2780         //biosA0[0x58] = psxBios_sys_a0_58;
2781         //biosA0[0x59] = psxBios_sys_a0_59;
2782         //biosA0[0x5a] = psxBios_sys_a0_5a;
2783         //biosA0[0x5b] = psxBios_dev_tty_init;
2784         //biosA0[0x5c] = psxBios_dev_tty_open;
2785         //biosA0[0x5d] = psxBios_sys_a0_5d;
2786         //biosA0[0x5e] = psxBios_dev_tty_ioctl;
2787         //biosA0[0x5f] = psxBios_dev_cd_open;
2788         //biosA0[0x60] = psxBios_dev_cd_read;
2789         //biosA0[0x61] = psxBios_dev_cd_close;
2790         //biosA0[0x62] = psxBios_dev_cd_firstfile;
2791         //biosA0[0x63] = psxBios_dev_cd_nextfile;
2792         //biosA0[0x64] = psxBios_dev_cd_chdir;
2793         //biosA0[0x65] = psxBios_dev_card_open;
2794         //biosA0[0x66] = psxBios_dev_card_read;
2795         //biosA0[0x67] = psxBios_dev_card_write;
2796         //biosA0[0x68] = psxBios_dev_card_close;
2797         //biosA0[0x69] = psxBios_dev_card_firstfile;
2798         //biosA0[0x6a] = psxBios_dev_card_nextfile;
2799         //biosA0[0x6b] = psxBios_dev_card_erase;
2800         //biosA0[0x6c] = psxBios_dev_card_undelete;
2801         //biosA0[0x6d] = psxBios_dev_card_format;
2802         //biosA0[0x6e] = psxBios_dev_card_rename;
2803         //biosA0[0x6f] = psxBios_dev_card_6f;
2804         biosA0[0x70] = psxBios__bu_init;
2805         biosA0[0x71] = psxBios__96_init;
2806         biosA0[0x72] = psxBios__96_remove;
2807         //biosA0[0x73] = psxBios_sys_a0_73;
2808         //biosA0[0x74] = psxBios_sys_a0_74;
2809         //biosA0[0x75] = psxBios_sys_a0_75;
2810         //biosA0[0x76] = psxBios_sys_a0_76;
2811         //biosA0[0x77] = psxBios_sys_a0_77;
2812         //biosA0[0x78] = psxBios__96_CdSeekL;
2813         //biosA0[0x79] = psxBios_sys_a0_79;
2814         //biosA0[0x7a] = psxBios_sys_a0_7a;
2815         //biosA0[0x7b] = psxBios_sys_a0_7b;
2816         //biosA0[0x7c] = psxBios__96_CdGetStatus;
2817         //biosA0[0x7d] = psxBios_sys_a0_7d;
2818         //biosA0[0x7e] = psxBios__96_CdRead;
2819         //biosA0[0x7f] = psxBios_sys_a0_7f;
2820         //biosA0[0x80] = psxBios_sys_a0_80;
2821         //biosA0[0x81] = psxBios_sys_a0_81;
2822         //biosA0[0x82] = psxBios_sys_a0_82;
2823         //biosA0[0x83] = psxBios_sys_a0_83;
2824         //biosA0[0x84] = psxBios_sys_a0_84;
2825         //biosA0[0x85] = psxBios__96_CdStop;
2826         //biosA0[0x86] = psxBios_sys_a0_86;
2827         //biosA0[0x87] = psxBios_sys_a0_87;
2828         //biosA0[0x88] = psxBios_sys_a0_88;
2829         //biosA0[0x89] = psxBios_sys_a0_89;
2830         //biosA0[0x8a] = psxBios_sys_a0_8a;
2831         //biosA0[0x8b] = psxBios_sys_a0_8b;
2832         //biosA0[0x8c] = psxBios_sys_a0_8c;
2833         //biosA0[0x8d] = psxBios_sys_a0_8d;
2834         //biosA0[0x8e] = psxBios_sys_a0_8e;
2835         //biosA0[0x8f] = psxBios_sys_a0_8f;
2836         //biosA0[0x90] = psxBios_sys_a0_90;
2837         //biosA0[0x91] = psxBios_sys_a0_91;
2838         //biosA0[0x92] = psxBios_sys_a0_92;
2839         //biosA0[0x93] = psxBios_sys_a0_93;
2840         //biosA0[0x94] = psxBios_sys_a0_94;
2841         //biosA0[0x95] = psxBios_sys_a0_95;
2842         //biosA0[0x96] = psxBios_AddCDROMDevice;
2843         //biosA0[0x97] = psxBios_AddMemCardDevide;
2844         //biosA0[0x98] = psxBios_DisableKernelIORedirection;
2845         //biosA0[0x99] = psxBios_EnableKernelIORedirection;
2846         //biosA0[0x9a] = psxBios_sys_a0_9a;
2847         //biosA0[0x9b] = psxBios_sys_a0_9b;
2848         //biosA0[0x9c] = psxBios_SetConf;
2849         //biosA0[0x9d] = psxBios_GetConf;
2850         //biosA0[0x9e] = psxBios_sys_a0_9e;
2851         biosA0[0x9f] = psxBios_SetMem;
2852         //biosA0[0xa0] = psxBios__boot;
2853         //biosA0[0xa1] = psxBios_SystemError;
2854         //biosA0[0xa2] = psxBios_EnqueueCdIntr;
2855         //biosA0[0xa3] = psxBios_DequeueCdIntr;
2856         //biosA0[0xa4] = psxBios_sys_a0_a4;
2857         //biosA0[0xa5] = psxBios_ReadSector;
2858         //biosA0[0xa6] = psxBios_get_cd_status;
2859         //biosA0[0xa7] = psxBios_bufs_cb_0;
2860         //biosA0[0xa8] = psxBios_bufs_cb_1;
2861         //biosA0[0xa9] = psxBios_bufs_cb_2;
2862         //biosA0[0xaa] = psxBios_bufs_cb_3;
2863         biosA0[0xab] = psxBios__card_info;
2864         biosA0[0xac] = psxBios__card_load;
2865         //biosA0[0axd] = psxBios__card_auto;
2866         //biosA0[0xae] = psxBios_bufs_cd_4;
2867         //biosA0[0xaf] = psxBios_sys_a0_af;
2868         //biosA0[0xb0] = psxBios_sys_a0_b0;
2869         //biosA0[0xb1] = psxBios_sys_a0_b1;
2870         //biosA0[0xb2] = psxBios_do_a_long_jmp
2871         //biosA0[0xb3] = psxBios_sys_a0_b3;
2872         //biosA0[0xb4] = psxBios_sub_function;
2873 //*******************B0 CALLS****************************
2874         //biosB0[0x00] = psxBios_SysMalloc;
2875         //biosB0[0x01] = psxBios_sys_b0_01;
2876         biosB0[0x02] = psxBios_SetRCnt;
2877         biosB0[0x03] = psxBios_GetRCnt;
2878         biosB0[0x04] = psxBios_StartRCnt;
2879         biosB0[0x05] = psxBios_StopRCnt;
2880         biosB0[0x06] = psxBios_ResetRCnt;
2881         biosB0[0x07] = psxBios_DeliverEvent;
2882         biosB0[0x08] = psxBios_OpenEvent;
2883         biosB0[0x09] = psxBios_CloseEvent;
2884         biosB0[0x0a] = psxBios_WaitEvent;
2885         biosB0[0x0b] = psxBios_TestEvent;
2886         biosB0[0x0c] = psxBios_EnableEvent;
2887         biosB0[0x0d] = psxBios_DisableEvent;
2888         biosB0[0x0e] = psxBios_OpenTh;
2889         biosB0[0x0f] = psxBios_CloseTh;
2890         biosB0[0x10] = psxBios_ChangeTh;
2891         //biosB0[0x11] = psxBios_psxBios_b0_11;
2892         biosB0[0x12] = psxBios_InitPAD;
2893         biosB0[0x13] = psxBios_StartPAD;
2894         biosB0[0x14] = psxBios_StopPAD;
2895         biosB0[0x15] = psxBios_PAD_init;
2896         biosB0[0x16] = psxBios_PAD_dr;
2897         biosB0[0x17] = psxBios_ReturnFromException;
2898         biosB0[0x18] = psxBios_ResetEntryInt;
2899         biosB0[0x19] = psxBios_HookEntryInt;
2900         //biosB0[0x1a] = psxBios_sys_b0_1a;
2901         //biosB0[0x1b] = psxBios_sys_b0_1b;
2902         //biosB0[0x1c] = psxBios_sys_b0_1c;
2903         //biosB0[0x1d] = psxBios_sys_b0_1d;
2904         //biosB0[0x1e] = psxBios_sys_b0_1e;
2905         //biosB0[0x1f] = psxBios_sys_b0_1f;
2906         biosB0[0x20] = psxBios_UnDeliverEvent;
2907         //biosB0[0x21] = psxBios_sys_b0_21;
2908         //biosB0[0x22] = psxBios_sys_b0_22;
2909         //biosB0[0x23] = psxBios_sys_b0_23;
2910         //biosB0[0x24] = psxBios_sys_b0_24;
2911         //biosB0[0x25] = psxBios_sys_b0_25;
2912         //biosB0[0x26] = psxBios_sys_b0_26;
2913         //biosB0[0x27] = psxBios_sys_b0_27;
2914         //biosB0[0x28] = psxBios_sys_b0_28;
2915         //biosB0[0x29] = psxBios_sys_b0_29;
2916         //biosB0[0x2a] = psxBios_sys_b0_2a;
2917         //biosB0[0x2b] = psxBios_sys_b0_2b;
2918         //biosB0[0x2c] = psxBios_sys_b0_2c;
2919         //biosB0[0x2d] = psxBios_sys_b0_2d;
2920         //biosB0[0x2e] = psxBios_sys_b0_2e;
2921         //biosB0[0x2f] = psxBios_sys_b0_2f;
2922         //biosB0[0x30] = psxBios_sys_b0_30;
2923         //biosB0[0x31] = psxBios_sys_b0_31;
2924         biosB0[0x32] = psxBios_open;
2925         biosB0[0x33] = psxBios_lseek;
2926         biosB0[0x34] = psxBios_read;
2927         biosB0[0x35] = psxBios_write;
2928         biosB0[0x36] = psxBios_close;
2929         //biosB0[0x37] = psxBios_ioctl;
2930         //biosB0[0x38] = psxBios_exit;
2931         //biosB0[0x39] = psxBios_sys_b0_39;
2932         //biosB0[0x3a] = psxBios_getc;
2933         //biosB0[0x3b] = psxBios_putc;
2934         biosB0[0x3c] = psxBios_getchar;
2935         //biosB0[0x3e] = psxBios_gets;
2936         //biosB0[0x40] = psxBios_cd;
2937         biosB0[0x41] = psxBios_format;
2938         biosB0[0x42] = psxBios_firstfile;
2939         biosB0[0x43] = psxBios_nextfile;
2940         biosB0[0x44] = psxBios_rename;
2941         biosB0[0x45] = psxBios_delete;
2942         //biosB0[0x46] = psxBios_undelete;
2943         //biosB0[0x47] = psxBios_AddDevice;
2944         //biosB0[0x48] = psxBios_RemoteDevice;
2945         //biosB0[0x49] = psxBios_PrintInstalledDevices;
2946         biosB0[0x4a] = psxBios_InitCARD;
2947         biosB0[0x4b] = psxBios_StartCARD;
2948         biosB0[0x4c] = psxBios_StopCARD;
2949         //biosB0[0x4d] = psxBios_sys_b0_4d;
2950         biosB0[0x4e] = psxBios__card_write;
2951         biosB0[0x4f] = psxBios__card_read;
2952         biosB0[0x50] = psxBios__new_card;
2953         biosB0[0x51] = psxBios_Krom2RawAdd;
2954         //biosB0[0x52] = psxBios_sys_b0_52;
2955         //biosB0[0x53] = psxBios_sys_b0_53;
2956         //biosB0[0x54] = psxBios__get_errno;
2957         biosB0[0x55] = psxBios__get_error;
2958         biosB0[0x56] = psxBios_GetC0Table;
2959         biosB0[0x57] = psxBios_GetB0Table;
2960         biosB0[0x58] = psxBios__card_chan;
2961         //biosB0[0x59] = psxBios_sys_b0_59;
2962         //biosB0[0x5a] = psxBios_sys_b0_5a;
2963         biosB0[0x5b] = psxBios_ChangeClearPad;
2964         biosB0[0x5c] = psxBios__card_status;
2965         biosB0[0x5d] = psxBios__card_wait;
2966 //*******************C0 CALLS****************************
2967         //biosC0[0x00] = psxBios_InitRCnt;
2968         //biosC0[0x01] = psxBios_InitException;
2969         biosC0[0x02] = psxBios_SysEnqIntRP;
2970         biosC0[0x03] = psxBios_SysDeqIntRP;
2971         //biosC0[0x04] = psxBios_get_free_EvCB_slot;
2972         //biosC0[0x05] = psxBios_get_free_TCB_slot;
2973         //biosC0[0x06] = psxBios_ExceptionHandler;
2974         //biosC0[0x07] = psxBios_InstallExeptionHandler;
2975         //biosC0[0x08] = psxBios_SysInitMemory;
2976         //biosC0[0x09] = psxBios_SysInitKMem;
2977         biosC0[0x0a] = psxBios_ChangeClearRCnt;
2978         //biosC0[0x0b] = psxBios_SystemError;
2979         //biosC0[0x0c] = psxBios_InitDefInt;
2980         //biosC0[0x0d] = psxBios_sys_c0_0d;
2981         //biosC0[0x0e] = psxBios_sys_c0_0e;
2982         //biosC0[0x0f] = psxBios_sys_c0_0f;
2983         //biosC0[0x10] = psxBios_sys_c0_10;
2984         //biosC0[0x11] = psxBios_sys_c0_11;
2985         //biosC0[0x12] = psxBios_InstallDevices;
2986         //biosC0[0x13] = psxBios_FlushStfInOutPut;
2987         //biosC0[0x14] = psxBios_sys_c0_14;
2988         //biosC0[0x15] = psxBios__cdevinput;
2989         //biosC0[0x16] = psxBios__cdevscan;
2990         //biosC0[0x17] = psxBios__circgetc;
2991         //biosC0[0x18] = psxBios__circputc;
2992         //biosC0[0x19] = psxBios_ioabort;
2993         //biosC0[0x1a] = psxBios_sys_c0_1a
2994         //biosC0[0x1b] = psxBios_KernelRedirect;
2995         //biosC0[0x1c] = psxBios_PatchAOTable;
2996 //************** THE END ***************************************
2997 /**/
2998         base = 0x1000;
2999         size = sizeof(EvCB) * 32;
3000         Event = (void *)&psxR[base]; base += size * 6;
3001         memset(Event, 0, size * 6);
3002         HwEV = Event;
3003         EvEV = Event + 32;
3004         RcEV = Event + 32 * 2;
3005         UeEV = Event + 32 * 3;
3006         SwEV = Event + 32 * 4;
3007         ThEV = Event + 32 * 5;
3008
3009         ptr = (u32 *)&psxM[0x0874]; // b0 table
3010         ptr[0] = SWAPu32(0x4c54 - 0x884);
3011
3012         ptr = (u32 *)&psxM[0x0674]; // c0 table
3013         ptr[6] = SWAPu32(0xc80);
3014
3015         memset(SysIntRP, 0, sizeof(SysIntRP));
3016         memset(Thread, 0, sizeof(Thread));
3017         Thread[0].status = 2; // main thread
3018
3019         pad_stopped = 1;
3020         jmp_int = NULL;
3021         pad_buf = NULL;
3022         pad_buf1 = NULL;
3023         pad_buf2 = NULL;
3024         pad_buf1len = pad_buf2len = 0;
3025         heap_addr = NULL;
3026         heap_end = NULL;
3027         heap_size = 0;
3028         CardState = -1;
3029         CurThread = 0;
3030         memset(FDesc, 0, sizeof(FDesc));
3031         card_active_chan = 0;
3032
3033         psxMu32ref(0x0150) = SWAPu32(0x160);
3034         psxMu32ref(0x0154) = SWAPu32(0x320);
3035         psxMu32ref(0x0160) = SWAPu32(0x248);
3036         strcpy((char *)&psxM[0x248], "bu");
3037 /*      psxMu32ref(0x0ca8) = SWAPu32(0x1f410004);
3038         psxMu32ref(0x0cf0) = SWAPu32(0x3c020000);
3039         psxMu32ref(0x0cf4) = SWAPu32(0x2442641c);
3040         psxMu32ref(0x09e0) = SWAPu32(0x43d0);
3041         psxMu32ref(0x4d98) = SWAPu32(0x946f000a);
3042 */
3043         // opcode HLE
3044         psxRu32ref(0x0000) = SWAPu32((0x3b << 26) | 4);
3045         psxMu32ref(0x0000) = SWAPu32((0x3b << 26) | 0);
3046         psxMu32ref(0x00a0) = SWAPu32((0x3b << 26) | 1);
3047         psxMu32ref(0x00b0) = SWAPu32((0x3b << 26) | 2);
3048         psxMu32ref(0x00c0) = SWAPu32((0x3b << 26) | 3);
3049         psxMu32ref(0x4c54) = SWAPu32((0x3b << 26) | 0);
3050         psxMu32ref(0x8000) = SWAPu32((0x3b << 26) | 5);
3051         psxMu32ref(0x07a0) = SWAPu32((0x3b << 26) | 0);
3052         psxMu32ref(0x0884) = SWAPu32((0x3b << 26) | 0);
3053         psxMu32ref(0x0894) = SWAPu32((0x3b << 26) | 0);
3054
3055         // initial stack pointer for BIOS interrupt
3056         psxMu32ref(0x6c80) = SWAPu32(0x000085c8);
3057
3058         // initial RNG seed
3059         psxMu32ref(0x9010) = SWAPu32(0xac20cc00);
3060
3061         // fonts
3062         len = 0x80000 - 0x66000;
3063         uncompress((Bytef *)(psxR + 0x66000), &len, font_8140, sizeof(font_8140));
3064         len = 0x80000 - 0x69d68;
3065         uncompress((Bytef *)(psxR + 0x69d68), &len, font_889f, sizeof(font_889f));
3066
3067         // memory size 2 MB
3068         psxHu32ref(0x1060) = SWAPu32(0x00000b88);
3069
3070         hleSoftCall = FALSE;
3071 }
3072
3073 void psxBiosShutdown() {
3074 }
3075
3076 #define psxBios_PADpoll(pad) { \
3077         PAD##pad##_startPoll(pad); \
3078         pad_buf##pad[0] = 0; \
3079         pad_buf##pad[1] = PAD##pad##_poll(0x42); \
3080         if (!(pad_buf##pad[1] & 0x0f)) { \
3081                 bufcount = 32; \
3082         } else { \
3083                 bufcount = (pad_buf##pad[1] & 0x0f) * 2; \
3084         } \
3085         PAD##pad##_poll(0); \
3086         i = 2; \
3087         while (bufcount--) { \
3088                 pad_buf##pad[i++] = PAD##pad##_poll(0); \
3089         } \
3090 }
3091
3092 void biosInterrupt() {
3093         int i, bufcount;
3094
3095 //      if (psxHu32(0x1070) & 0x1) { // Vsync
3096                 if (pad_buf != NULL) {
3097                         u32 *buf = (u32*)pad_buf;
3098
3099                         if (!Config.UseNet) {
3100                                 PAD1_startPoll(1);
3101                                 if (PAD1_poll(0x42) == 0x23) {
3102                                         PAD1_poll(0);
3103                                         *buf = PAD1_poll(0) << 8;
3104                                         *buf |= PAD1_poll(0);
3105                                         PAD1_poll(0);
3106                                         *buf &= ~((PAD1_poll(0) > 0x20) ? 1 << 6 : 0);
3107                                         *buf &= ~((PAD1_poll(0) > 0x20) ? 1 << 7 : 0);
3108                                 } else {
3109                                         PAD1_poll(0);
3110                                         *buf = PAD1_poll(0) << 8;
3111                                         *buf|= PAD1_poll(0);
3112                                 }
3113
3114                                 PAD2_startPoll(2);
3115                                 if (PAD2_poll(0x42) == 0x23) {
3116                                         PAD2_poll(0);
3117                                         *buf |= PAD2_poll(0) << 24;
3118                                         *buf |= PAD2_poll(0) << 16;
3119                                         PAD2_poll(0);
3120                                         *buf &= ~((PAD2_poll(0) > 0x20) ? 1 << 22 : 0);
3121                                         *buf &= ~((PAD2_poll(0) > 0x20) ? 1 << 23 : 0);
3122                                 } else {
3123                                         PAD2_poll(0);
3124                                         *buf |= PAD2_poll(0) << 24;
3125                                         *buf |= PAD2_poll(0) << 16;
3126                                 }
3127                         } else {
3128                                 u16 data;
3129
3130                                 PAD1_startPoll(1);
3131                                 PAD1_poll(0x42);
3132                                 PAD1_poll(0);
3133                                 data = PAD1_poll(0) << 8;
3134                                 data |= PAD1_poll(0);
3135
3136                                 if (NET_sendPadData(&data, 2) == -1)
3137                                         netError();
3138
3139                                 if (NET_recvPadData(&((u16*)buf)[0], 1) == -1)
3140                                         netError();
3141                                 if (NET_recvPadData(&((u16*)buf)[1], 2) == -1)
3142                                         netError();
3143                         }
3144                 }
3145                 if (Config.UseNet && pad_buf1 != NULL && pad_buf2 != NULL) {
3146                         psxBios_PADpoll(1);
3147
3148                         if (NET_sendPadData(pad_buf1, i) == -1)
3149                                 netError();
3150
3151                         if (NET_recvPadData(pad_buf1, 1) == -1)
3152                                 netError();
3153                         if (NET_recvPadData(pad_buf2, 2) == -1)
3154                                 netError();
3155                 } else {
3156                         if (!pad_stopped)  {
3157                                 if (pad_buf1) {
3158                                         psxBios_PADpoll(1);
3159                                 }
3160
3161                                 if (pad_buf2) {
3162                                         psxBios_PADpoll(2);
3163                                 }
3164                         }
3165                 }
3166
3167         if (psxHu32(0x1070) & 0x1) { // Vsync
3168                 if (RcEV[3][1].status == EvStACTIVE) {
3169                         softCall(RcEV[3][1].fhandler);
3170 //                      hwWrite32(0x1f801070, ~(1));
3171                 }
3172         }
3173
3174         if (psxHu32(0x1070) & 0x70) { // Rcnt 0,1,2
3175                 int i;
3176
3177                 for (i = 0; i < 3; i++) {
3178                         if (psxHu32(0x1070) & (1 << (i + 4))) {
3179                                 if (RcEV[i][1].status == EvStACTIVE) {
3180                                         softCall(RcEV[i][1].fhandler);
3181                                 }
3182                                 psxHwWrite32(0x1f801070, ~(1 << (i + 4)));
3183                         }
3184                 }
3185         }
3186 }
3187
3188 void psxBiosException() {
3189         int i;
3190
3191         switch (psxRegs.CP0.n.Cause & 0x3c) {
3192                 case 0x00: // Interrupt
3193 #ifdef PSXCPU_LOG
3194 //                      PSXCPU_LOG("interrupt\n");
3195 #endif
3196                         SaveRegs();
3197
3198                         sp = psxMu32(0x6c80); // create new stack for interrupt handlers
3199
3200                         biosInterrupt();
3201
3202                         for (i = 0; i < 8; i++) {
3203                                 if (SysIntRP[i]) {
3204                                         u32 *queue = (u32 *)PSXM(SysIntRP[i]);
3205
3206                                         s0 = queue[2];
3207                                         softCall(queue[1]);
3208                                 }
3209                         }
3210
3211                         if (jmp_int != NULL) {
3212                                 int i;
3213
3214                                 psxHwWrite32(0x1f801070, 0xffffffff);
3215
3216                                 ra = jmp_int[0];
3217                                 sp = jmp_int[1];
3218                                 fp = jmp_int[2];
3219                                 for (i = 0; i < 8; i++) // s0-s7
3220                                          psxRegs.GPR.r[16 + i] = jmp_int[3 + i];
3221                                 gp = jmp_int[11];
3222
3223                                 v0 = 1;
3224                                 pc0 = ra;
3225                                 return;
3226                         }
3227                         psxHwWrite16(0x1f801070, 0);
3228                         break;
3229
3230                 case 0x20: // Syscall
3231 #ifdef PSXCPU_LOG
3232                         PSXCPU_LOG("syscall exp %x\n", a0);
3233 #endif
3234                         switch (a0) {
3235                                 case 1: // EnterCritical - disable irq's
3236                                         /* Fixes Medievil 2 not loading up new game, Digimon World not booting up and possibly others */
3237                                         v0 = (psxRegs.CP0.n.Status & 0x404) == 0x404;
3238                                         psxRegs.CP0.n.Status &= ~0x404;
3239                                         break;
3240
3241                                 case 2: // ExitCritical - enable irq's
3242                                         psxRegs.CP0.n.Status |= 0x404;
3243                                         break;
3244                                 /* Normally this should cover SYS(00h, SYS(04h but they don't do anything relevant so... */
3245                                 default:
3246                                         break;
3247                         }
3248                         pc0 = psxRegs.CP0.n.EPC + 4;
3249
3250                         psxRegs.CP0.n.Status = (psxRegs.CP0.n.Status & 0xfffffff0) |
3251                                                                   ((psxRegs.CP0.n.Status & 0x3c) >> 2);
3252                         return;
3253
3254                 default:
3255 #ifdef PSXCPU_LOG
3256                         PSXCPU_LOG("unknown bios exception!\n");
3257 #endif
3258                         break;
3259         }
3260
3261         pc0 = psxRegs.CP0.n.EPC;
3262         if (psxRegs.CP0.n.Cause & 0x80000000) pc0+=4;
3263
3264         psxRegs.CP0.n.Status = (psxRegs.CP0.n.Status & 0xfffffff0) |
3265                                                   ((psxRegs.CP0.n.Status & 0x3c) >> 2);
3266 }
3267
3268 #define bfreeze(ptr, size) { \
3269         if (Mode == 1) memcpy(&psxR[base], ptr, size); \
3270         if (Mode == 0) memcpy(ptr, &psxR[base], size); \
3271         base += size; \
3272 }
3273
3274 #define bfreezes(ptr) bfreeze(ptr, sizeof(ptr))
3275 #define bfreezel(ptr) bfreeze(ptr, sizeof(*ptr))
3276
3277 #define bfreezepsxMptr(ptr, type) { \
3278         if (Mode == 1) { \
3279                 if (ptr) psxRu32ref(base) = SWAPu32((s8 *)(ptr) - psxM); \
3280                 else psxRu32ref(base) = 0; \
3281         } else { \
3282                 if (psxRu32(base) != 0) ptr = (type *)(psxM + psxRu32(base)); \
3283                 else (ptr) = NULL; \
3284         } \
3285         base += sizeof(u32); \
3286 }
3287
3288 void psxBiosFreeze(int Mode) {
3289         u32 base = 0x40000;
3290
3291         bfreezepsxMptr(jmp_int, u32);
3292         bfreezepsxMptr(pad_buf, int);
3293         bfreezepsxMptr(pad_buf1, char);
3294         bfreezepsxMptr(pad_buf2, char);
3295         bfreezepsxMptr(heap_addr, u32);
3296         bfreezel(&pad_buf1len);
3297         bfreezel(&pad_buf2len);
3298         bfreezes(regs);
3299         bfreezes(SysIntRP);
3300         bfreezel(&CardState);
3301         bfreezes(Thread);
3302         bfreezel(&CurThread);
3303         bfreezes(FDesc);
3304         bfreezel(&card_active_chan);
3305         bfreezel(&pad_stopped);
3306 }