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 unsigned interrupt_r26=0x8004E8B0;
 311
 312 static inline void SaveRegs() {
 313         memcpy(regs, psxRegs.GPR.r, 32*4);
 314         regs[32] = psxRegs.GPR.n.lo;
 315         regs[33] = psxRegs.GPR.n.hi;
 316         regs[34] = psxRegs.pc;
 317 }
 318
 319 static inline void LoadRegs() {
 320         memcpy(psxRegs.GPR.r, regs, 32*4);
 321         psxRegs.GPR.n.lo = regs[32];
 322         psxRegs.GPR.n.hi = regs[33];
 323 }
 324
 325 /*                                           *
 326 //                                           *
 327 //                                           *
 328 //               System calls A0             */
 329
 330
 331 #define buread(Ra1, mcd, length) { \
 332         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); \
 333         ptr = Mcd##mcd##Data + 8192 * FDesc[1 + mcd].mcfile + FDesc[1 + mcd].offset; \
 334         memcpy(Ra1, ptr, length); \
 335         if (FDesc[1 + mcd].mode & 0x8000) { \
 336         DeliverEvent(0x11, 0x2); /* 0xf0000011, 0x0004 */ \
 337         DeliverEvent(0x81, 0x2); /* 0xf4000001, 0x0004 */ \
 338         v0 = 0; } \
 339         else v0 = length; \
 340         FDesc[1 + mcd].offset += v0; \
 341 }
 342
 343 #define buwrite(Ra1, mcd, length) { \
 344         u32 offset =  + 8192 * FDesc[1 + mcd].mcfile + FDesc[1 + mcd].offset; \
 345         SysPrintf("write %d: %x,%x\n", FDesc[1 + mcd].mcfile, FDesc[1 + mcd].offset, a2); \
 346         ptr = Mcd##mcd##Data + offset; \
 347         memcpy(ptr, Ra1, length); \
 348         FDesc[1 + mcd].offset += length; \
 349         if (FDesc[1 + mcd].mode & 0x8000) { \
 350         DeliverEvent(0x11, 0x2); /* 0xf0000011, 0x0004 */ \
 351         DeliverEvent(0x81, 0x2); /* 0xf4000001, 0x0004 */ \
 352         v0 = 0; } \
 353         else v0 = length; \
 354 }
 355
 356
 357 /* Internally redirects to "FileRead(fd,tempbuf,1)".*/
 358 /* For some strange reason, the returned character is sign-expanded; */
 359 /* So if a return value of FFFFFFFFh could mean either character FFh, or error. */
 360 /* TODO FIX ME : Properly implement this behaviour */
 361 void psxBios_getc(void) // 0x03, 0x35
 362 {
 363         char *ptr;
 364         void *pa1 = Ra1;
 365 #ifdef PSXBIOS_LOG
 366         PSXBIOS_LOG("psxBios_%s\n", biosA0n[0x03]);
 367 #endif
 368         v0 = -1;
 369
 370         if (pa1) {
 371                 switch (a0) {
 372                         case 2: buread(pa1, 1, 1); break;
 373                         case 3: buread(pa1, 2, 1); break;
 374                 }
 375         }
 376
 377         pc0 = ra;
 378 }
 379
 380 /* Copy of psxBios_write, except size is 1. */
 381 void psxBios_putc(void) // 0x09, 0x3B
 382 {
 383         char *ptr;
 384         void *pa1 = Ra1;
 385 #ifdef PSXBIOS_LOG
 386         PSXBIOS_LOG("psxBios_%s\n", biosA0n[0x09]);
 387 #endif
 388         v0 = -1;
 389         if (!pa1) {
 390                 pc0 = ra;
 391                 return;
 392         }
 393
 394         if (a0 == 1) { // stdout
 395                 char *ptr = (char *)pa1;
 396
 397                 v0 = a2;
 398                 while (a2 > 0) {
 399                         printf("%c", *ptr++); a2--;
 400                 }
 401                 pc0 = ra; return;
 402         }
 403
 404         switch (a0) {
 405                 case 2: buwrite(pa1, 1, 1); break;
 406                 case 3: buwrite(pa1, 2, 1); break;
 407         }
 408
 409         pc0 = ra;
 410 }
 411
 412 void psxBios_todigit(void) // 0x0a
 413 {
 414         int c = a0;
 415 #ifdef PSXBIOS_LOG
 416         PSXBIOS_LOG("psxBios_%s\n", biosA0n[0x0a]);
 417 #endif
 418         c &= 0xFF;
 419         if (c >= 0x30 && c < 0x3A) {
 420                 c -= 0x30;
 421         }
 422         else if (c > 0x60 && c < 0x7B) {
 423                 c -= 0x20;
 424         }
 425         else if (c > 0x40 && c < 0x5B) {
 426                 c = c - 0x41 + 10;
 427         }
 428         else if (c >= 0x80) {
 429                 c = -1;
 430         }
 431         else
 432         {
 433                 c = 0x0098967F;
 434         }
 435         v0 = c;
 436         pc0 = ra;
 437 }
 438
 439 void psxBios_abs() { // 0x0e
 440         if ((s32)a0 < 0) v0 = -(s32)a0;
 441         else v0 = a0;
 442         pc0 = ra;
 443 }
 444
 445 void psxBios_labs() { // 0x0f
 446         psxBios_abs();
 447 }
 448
 449 void psxBios_atoi() { // 0x10
 450         s32 n = 0, f = 0;
 451         char *p = (char *)Ra0;
 452
 453         for (;;p++) {
 454                 switch (*p) {
 455                         case ' ': case '\t': continue;
 456                         case '-': f++;
 457                         case '+': p++;
 458                 }
 459                 break;
 460         }
 461
 462         while (*p >= '0' && *p <= '9') {
 463                 n = n * 10 + *p++ - '0';
 464         }
 465
 466         v0 = (f ? -n : n);
 467         pc0 = ra;
 468 }
 469
 470 void psxBios_atol() { // 0x11
 471         psxBios_atoi();
 472 }
 473
 474 void psxBios_setjmp() { // 0x13
 475         u32 *jmp_buf = (u32 *)Ra0;
 476         int i;
 477
 478 #ifdef PSXBIOS_LOG
 479         PSXBIOS_LOG("psxBios_%s\n", biosA0n[0x13]);
 480 #endif
 481
 482         jmp_buf[0] = ra;
 483         jmp_buf[1] = sp;
 484         jmp_buf[2] = fp;
 485         for (i = 0; i < 8; i++) // s0-s7
 486                 jmp_buf[3 + i] = psxRegs.GPR.r[16 + i];
 487         jmp_buf[11] = gp;
 488
 489         v0 = 0; pc0 = ra;
 490 }
 491
 492 void psxBios_longjmp() { // 0x14
 493         u32 *jmp_buf = (u32 *)Ra0;
 494         int i;
 495
 496 #ifdef PSXBIOS_LOG
 497         PSXBIOS_LOG("psxBios_%s\n", biosA0n[0x14]);
 498 #endif
 499
 500         ra = jmp_buf[0]; /* ra */
 501         sp = jmp_buf[1]; /* sp */
 502         fp = jmp_buf[2]; /* fp */
 503         for (i = 0; i < 8; i++) // s0-s7
 504                 psxRegs.GPR.r[16 + i] = jmp_buf[3 + i];
 505         gp = jmp_buf[11]; /* gp */
 506
 507         v0 = a1; pc0 = ra;
 508 }
 509
 510 void psxBios_strcat() { // 0x15
 511         char *p1 = (char *)Ra0, *p2 = (char *)Ra1;
 512
 513 #ifdef PSXBIOS_LOG
 514         PSXBIOS_LOG("psxBios_%s: %s, %s\n", biosA0n[0x15], Ra0, Ra1);
 515 #endif
 516         if (a0 == 0 || a1 == 0)
 517         {
 518                 v0 = 0;
 519                 pc0 = ra;
 520                 return;
 521         }
 522         while (*p1++);
 523         --p1;
 524         while ((*p1++ = *p2++) != '\0');
 525
 526         v0 = a0; pc0 = ra;
 527 }
 528
 529 void psxBios_strncat() { // 0x16
 530         char *p1 = (char *)Ra0, *p2 = (char *)Ra1;
 531         s32 n = a2;
 532
 533 #ifdef PSXBIOS_LOG
 534         PSXBIOS_LOG("psxBios_%s: %s (%x), %s (%x), %d\n", biosA0n[0x16], Ra0, a0, Ra1, a1, a2);
 535 #endif
 536         if (a0 == 0 || a1 == 0)
 537         {
 538                 v0 = 0;
 539                 pc0 = ra;
 540                 return;
 541         }
 542         while (*p1++);
 543         --p1;
 544         while ((*p1++ = *p2++) != '\0') {
 545                 if (--n < 0) {
 546                         *--p1 = '\0';
 547                         break;
 548                 }
 549         }
 550
 551         v0 = a0; pc0 = ra;
 552 }
 553
 554 void psxBios_strcmp() { // 0x17
 555         char *p1 = (char *)Ra0, *p2 = (char *)Ra1;
 556         s32 n=0;
 557         if (a0 == 0 && a1 == 0)
 558         {
 559                 v0 = 0;
 560                 pc0 = ra;
 561                 return;
 562         }
 563         else if (a0 == 0 && a1 != 0)
 564         {
 565                 v0 = -1;
 566                 pc0 = ra;
 567                 return;
 568         }
 569         else if (a0 != 0 && a1 == 0)
 570         {
 571                 v0 = 1;
 572                 pc0 = ra;
 573                 return;
 574         }
 575 #ifdef PSXBIOS_LOG
 576         PSXBIOS_LOG("psxBios_%s: %s (%x), %s (%x)\n", biosA0n[0x17], Ra0, a0, Ra1, a1);
 577 #endif
 578
 579         while (*p1 == *p2++) {
 580                 n++;
 581                 if (*p1++ == '\0') {
 582                         v1=n-1;
 583                         a0+=n;
 584                         a1+=n;
 585                         v0 = 0;
 586                         pc0 = ra;
 587                         return;
 588                 }
 589         }
 590
 591         v0 = (*p1 - *--p2);
 592         v1 = n;
 593         a0+=n;
 594         a1+=n;
 595         pc0 = ra;
 596 }
 597
 598 void psxBios_strncmp() { // 0x18
 599         char *p1 = (char *)Ra0, *p2 = (char *)Ra1;
 600         s32 n = a2;
 601         if (a0 == 0 && a1 == 0)
 602         {
 603                 v0 = 0;
 604                 pc0 = ra;
 605                 return;
 606         }
 607         else if (a0 == 0 && a1 != 0)
 608         {
 609                 v0 = -1;
 610                 pc0 = ra;
 611                 return;
 612         }
 613         else if (a0 != 0 && a1 == 0)
 614         {
 615                 v0 = 1;
 616                 pc0 = ra;
 617                 return;
 618         }
 619 #ifdef PSXBIOS_LOG
 620         PSXBIOS_LOG("psxBios_%s: %s (%x), %s (%x), %d\n", biosA0n[0x18], Ra0, a0, Ra1, a1, a2);
 621 #endif
 622
 623         while (--n >= 0 && *p1 == *p2++) {
 624                 if (*p1++ == '\0') {
 625                         v0 = 0;
 626                         pc0 = ra;
 627                         v1 = a2 - ((a2-n) - 1);
 628                         a0 += (a2-n) - 1;
 629                         a1 += (a2-n) - 1;
 630                         a2 = n;
 631                         return;
 632                 }
 633         }
 634
 635         v0 = (n < 0 ? 0 : *p1 - *--p2);
 636         pc0 = ra;
 637         v1 = a2 - ((a2-n) - 1);
 638         a0 += (a2-n) - 1;
 639         a1 += (a2-n) - 1;
 640         a2 = n;
 641 }
 642
 643 void psxBios_strcpy() { // 0x19
 644         char *p1 = (char *)Ra0, *p2 = (char *)Ra1;
 645         if (a0 == 0 || a1 == 0)
 646         {
 647                 v0 = 0;
 648                 pc0 = ra;
 649                 return;
 650         }
 651         while ((*p1++ = *p2++) != '\0');
 652
 653         v0 = a0; pc0 = ra;
 654 }
 655
 656 void psxBios_strncpy() { // 0x1a
 657         char *p1 = (char *)Ra0, *p2 = (char *)Ra1;
 658         s32 n = a2, i;
 659         if (a0 == 0 || a1 == 0)
 660         {
 661                 v0 = 0;
 662                 pc0 = ra;
 663                 return;
 664         }
 665         for (i = 0; i < n; i++) {
 666                 if ((*p1++ = *p2++) == '\0') {
 667                         while (++i < n) {
 668                                 *p1++ = '\0';
 669                         }
 670                         v0 = a0; pc0 = ra;
 671                         return;
 672                 }
 673         }
 674
 675         v0 = a0; pc0 = ra;
 676 }
 677
 678 void psxBios_strlen() { // 0x1b
 679         char *p = (char *)Ra0;
 680         v0 = 0;
 681         if (a0 == 0)
 682         {
 683                 pc0 = ra;
 684                 return;
 685         }
 686         while (*p++) v0++;
 687         pc0 = ra;
 688 }
 689
 690 void psxBios_index() { // 0x1c
 691         char *p = (char *)Ra0;
 692         if (a0 == 0)
 693         {
 694                 v0 = 0;
 695                 pc0 = ra;
 696                 return;
 697         }
 698
 699         do {
 700                 if (*p == a1) {
 701                         v0 = a0 + (p - (char *)Ra0);
 702                         pc0 = ra;
 703                         return;
 704                 }
 705         } while (*p++ != '\0');
 706
 707         v0 = 0; pc0 = ra;
 708 }
 709
 710 void psxBios_rindex() { // 0x1d
 711         char *p = (char *)Ra0;
 712
 713         v0 = 0;
 714         if (a0 == 0)
 715         {
 716                 pc0 = ra;
 717                 return;
 718         }
 719         do {
 720                 if (*p == a1)
 721                         v0 = a0 + (p - (char *)Ra0);
 722         } while (*p++ != '\0');
 723
 724         pc0 = ra;
 725 }
 726
 727 void psxBios_strchr() { // 0x1e
 728         psxBios_index();
 729 }
 730
 731 void psxBios_strrchr() { // 0x1f
 732         psxBios_rindex();
 733 }
 734
 735 void psxBios_strpbrk() { // 0x20
 736         char *p1 = (char *)Ra0, *p2 = (char *)Ra1, *scanp, c, sc;
 737
 738         while ((c = *p1++) != '\0') {
 739                 for (scanp = p2; (sc = *scanp++) != '\0';) {
 740                         if (sc == c) {
 741                                 v0 = a0 + (p1 - 1 - (char *)Ra0);
 742                                 pc0 = ra;
 743                                 return;
 744                         }
 745                 }
 746         }
 747
 748         // BUG: return a0 instead of NULL if not found
 749         v0 = a0; pc0 = ra;
 750 }
 751
 752 void psxBios_strspn() { // 0x21
 753         char *p1, *p2;
 754
 755         for (p1 = (char *)Ra0; *p1 != '\0'; p1++) {
 756                 for (p2 = (char *)Ra1; *p2 != '\0' && *p2 != *p1; p2++);
 757                 if (*p2 == '\0') break;
 758         }
 759
 760         v0 = p1 - (char *)Ra0; pc0 = ra;
 761 }
 762
 763 void psxBios_strcspn() { // 0x22
 764         char *p1, *p2;
 765
 766         for (p1 = (char *)Ra0; *p1 != '\0'; p1++) {
 767                 for (p2 = (char *)Ra1; *p2 != '\0' && *p2 != *p1; p2++);
 768                 if (*p2 != '\0') break;
 769         }
 770
 771         v0 = p1 - (char *)Ra0; pc0 = ra;
 772 }
 773
 774 void psxBios_strtok() { // 0x23
 775         char *pcA0 = (char *)Ra0;
 776         char *pcRet = strtok(pcA0, (char *)Ra1);
 777         if (pcRet)
 778                 v0 = a0 + pcRet - pcA0;
 779         else
 780                 v0 = 0;
 781         pc0 = ra;
 782 }
 783
 784 void psxBios_strstr() { // 0x24
 785         char *p = (char *)Ra0, *p1, *p2;
 786
 787         while (*p != '\0') {
 788                 p1 = p;
 789                 p2 = (char *)Ra1;
 790
 791                 while (*p1 != '\0' && *p2 != '\0' && *p1 == *p2) {
 792                         p1++; p2++;
 793                 }
 794
 795                 if (*p2 == '\0') {
 796                         v0 = a0 + (p - (char *)Ra0);
 797                         pc0 = ra;
 798                         return;
 799                 }
 800
 801                 p++;
 802         }
 803
 804         v0 = 0; pc0 = ra;
 805 }
 806
 807 void psxBios_toupper() { // 0x25
 808         v0 = (s8)(a0 & 0xff);
 809         if (v0 >= 'a' && v0 <= 'z') v0 -= 'a' - 'A';
 810         pc0 = ra;
 811 }
 812
 813 void psxBios_tolower() { // 0x26
 814         v0 = (s8)(a0 & 0xff);
 815         if (v0 >= 'A' && v0 <= 'Z') v0 += 'a' - 'A';
 816         pc0 = ra;
 817 }
 818
 819 void psxBios_bcopy() { // 0x27
 820         char *p1 = (char *)Ra1, *p2 = (char *)Ra0;
 821         v0 = a0;
 822         if (a0 == 0 || a2 > 0x7FFFFFFF)
 823         {
 824                 pc0 = ra;
 825                 return;
 826         }
 827         while ((s32)a2-- > 0) *p1++ = *p2++;
 828         a2 = 0;
 829         pc0 = ra;
 830 }
 831
 832 void psxBios_bzero() { // 0x28
 833         char *p = (char *)Ra0;
 834         v0 = a0;
 835         /* Same as memset here (See memset below) */
 836         if (a1 > 0x7FFFFFFF || a1 == 0)
 837         {
 838                 v0 = 0;
 839                 pc0 = ra;
 840                 return;
 841         }
 842         else if (a0 == 0)
 843         {
 844                 pc0 = ra;
 845                 return;
 846         }
 847         while ((s32)a1-- > 0) *p++ = '\0';
 848         a1 = 0;
 849         pc0 = ra;
 850 }
 851
 852 void psxBios_bcmp() { // 0x29
 853         char *p1 = (char *)Ra0, *p2 = (char *)Ra1;
 854
 855         if (a0 == 0 || a1 == 0) { v0 = 0; pc0 = ra; return; }
 856
 857         while ((s32)a2-- > 0) {
 858                 if (*p1++ != *p2++) {
 859                         v0 = *p1 - *p2; // BUG: compare the NEXT byte
 860                         pc0 = ra;
 861                         return;
 862                 }
 863         }
 864
 865         v0 = 0; pc0 = ra;
 866 }
 867
 868 void psxBios_memcpy() { // 0x2a
 869         char *p1 = (char *)Ra0, *p2 = (char *)Ra1;
 870         v0 = a0;
 871         if (a0 == 0 || a2 > 0x7FFFFFFF)
 872         {
 873                 pc0 = ra;
 874                 return;
 875         }
 876         while ((s32)a2-- > 0) {
 877                 *p1++ = *p2++;
 878         }
 879         a2 = 0;
 880         pc0 = ra;
 881 }
 882
 883 void psxBios_memset() { // 0x2b
 884         char *p = (char *)Ra0;
 885         v0 = a0;
 886         if (a2 > 0x7FFFFFFF || a2 == 0)
 887         {
 888                 v0 = 0;
 889                 pc0 = ra;
 890                 return;
 891         }
 892         if (a0 == 0)
 893         {
 894                 pc0 = ra;
 895                 return;
 896         }
 897         while ((s32)a2-- > 0) *p++ = (char)a1;
 898         a2 = 0;
 899         v0 = a0; pc0 = ra;
 900 }
 901
 902 void psxBios_memmove() { // 0x2c
 903         char *p1 = (char *)Ra0, *p2 = (char *)Ra1;
 904         v0 = a0;
 905         if (a0 == 0 || a2 > 0x7FFFFFFF)
 906         {
 907                 pc0 = ra;
 908                 return;
 909         }
 910         if (p2 <= p1 && p2 + a2 > p1) {
 911                 a2++; // BUG: copy one more byte here
 912                 p1 += a2;
 913                 p2 += a2;
 914                 while ((s32)a2-- > 0) *--p1 = *--p2;
 915         } else {
 916                 while ((s32)a2-- > 0) *p1++ = *p2++;
 917         }
 918         pc0 = ra;
 919 }
 920
 921 void psxBios_memcmp() { // 0x2d
 922         psxBios_bcmp();
 923 }
 924
 925 void psxBios_memchr() { // 0x2e
 926         char *p = (char *)Ra0;
 927
 928         if (a0 == 0 || a2 > 0x7FFFFFFF)
 929         {
 930                 pc0 = ra;
 931                 return;
 932         }
 933
 934         while ((s32)a2-- > 0) {
 935                 if (*p++ != (s8)a1) continue;
 936                 v0 = a0 + (p - (char *)Ra0 - 1);
 937                 pc0 = ra;
 938                 return;
 939         }
 940
 941         v0 = 0; pc0 = ra;
 942 }
 943
 944 void psxBios_rand() { // 0x2f
 945         u32 s = psxMu32(0x9010) * 1103515245 + 12345;
 946         v0 = (s >> 16) & 0x7fff;
 947         psxMu32ref(0x9010) = SWAPu32(s);
 948         pc0 = ra;
 949 }
 950
 951 void psxBios_srand() { // 0x30
 952         psxMu32ref(0x9010) = SWAPu32(a0);
 953         pc0 = ra;
 954 }
 955
 956 static u32 qscmpfunc, qswidth;
 957
 958 static inline int qscmp(char *a, char *b) {
 959         u32 sa0 = a0;
 960
 961         a0 = sa0 + (a - (char *)PSXM(sa0));
 962         a1 = sa0 + (b - (char *)PSXM(sa0));
 963
 964         softCall2(qscmpfunc);
 965
 966         a0 = sa0;
 967         return (s32)v0;
 968 }
 969
 970 static inline void qexchange(char *i, char *j) {
 971         char t;
 972         int n = qswidth;
 973
 974         do {
 975                 t = *i;
 976                 *i++ = *j;
 977                 *j++ = t;
 978         } while (--n);
 979 }
 980
 981 static inline void q3exchange(char *i, char *j, char *k) {
 982         char t;
 983         int n = qswidth;
 984
 985         do {
 986                 t = *i;
 987                 *i++ = *k;
 988                 *k++ = *j;
 989                 *j++ = t;
 990         } while (--n);
 991 }
 992
 993 static void qsort_main(char *a, char *l) {
 994         char *i, *j, *lp, *hp;
 995         int c;
 996         unsigned int n;
 997
 998 start:
 999         if ((n = l - a) <= qswidth)
1000                 return;
1001         n = qswidth * (n / (2 * qswidth));
1002         hp = lp = a + n;
1003         i = a;
1004         j = l - qswidth;
1005         while (TRUE) {
1006                 if (i < lp) {
1007                         if ((c = qscmp(i, lp)) == 0) {
1008                                 qexchange(i, lp -= qswidth);
1009                                 continue;
1010                         }
1011                         if (c < 0) {
1012                                 i += qswidth;
1013                                 continue;
1014                         }
1015                 }
1016
1017 loop:
1018                 if (j > hp) {
1019                         if ((c = qscmp(hp, j)) == 0) {
1020                                 qexchange(hp += qswidth, j);
1021                                 goto loop;
1022                         }
1023                         if (c > 0) {
1024                                 if (i == lp) {
1025                                         q3exchange(i, hp += qswidth, j);
1026                                         i = lp += qswidth;
1027                                         goto loop;
1028                                 }
1029                                 qexchange(i, j);
1030                                 j -= qswidth;
1031                                 i += qswidth;
1032                                 continue;
1033                         }
1034                         j -= qswidth;
1035                         goto loop;
1036                 }
1037
1038                 if (i == lp) {
1039                         if (lp - a >= l - hp) {
1040                                 qsort_main(hp + qswidth, l);
1041                                 l = lp;
1042                         } else {
1043                                 qsort_main(a, lp);
1044                                 a = hp + qswidth;
1045                         }
1046                         goto start;
1047                 }
1048
1049                 q3exchange(j, lp -= qswidth, i);
1050                 j = hp -= qswidth;
1051         }
1052 }
1053
1054 void psxBios_qsort() { // 0x31
1055         qswidth = a2;
1056         qscmpfunc = a3;
1057         qsort_main((char *)Ra0, (char *)Ra0 + a1 * a2);
1058
1059         pc0 = ra;
1060 }
1061
1062 void psxBios_malloc() { // 0x33
1063         unsigned int *chunk, *newchunk = NULL;
1064         unsigned int dsize = 0, csize, cstat;
1065         int colflag;
1066 #ifdef PSXBIOS_LOG
1067         PSXBIOS_LOG("psxBios_%s\n", biosA0n[0x33]);
1068 #endif
1069         if (!a0 || (!heap_size || !heap_addr)) {
1070                 v0 = 0;
1071                 pc0 = ra;
1072                 return;
1073         }
1074
1075         // scan through heap and combine free chunks of space
1076         chunk = heap_addr;
1077         colflag = 0;
1078         while(chunk < heap_end) {
1079                 // get size and status of actual chunk
1080                 csize = ((u32)*chunk) & 0xfffffffc;
1081                 cstat = ((u32)*chunk) & 1;
1082
1083                 // most probably broken heap descriptor
1084                 // this fixes Burning Road
1085                 if (*chunk == 0) {
1086                         newchunk = chunk;
1087                         dsize = ((uptr)heap_end - (uptr)chunk) - 4;
1088                         colflag = 1;
1089                         break;
1090                 }
1091
1092                 // it's a free chunk
1093                 if(cstat == 1) {
1094                         if(colflag == 0) {
1095                                 newchunk = chunk;
1096                                 dsize = csize;
1097                                 colflag = 1;                    // let's begin a new collection of free memory
1098                         }
1099                         else dsize += (csize+4);        // add the new size including header
1100                 }
1101                 // not a free chunk: did we start a collection ?
1102                 else {
1103                         if(colflag == 1) {                      // collection is over
1104                                 colflag = 0;
1105                                 *newchunk = SWAP32(dsize | 1);
1106                         }
1107                 }
1108
1109                 // next chunk
1110                 chunk = (u32*)((uptr)chunk + csize + 4);
1111         }
1112         // if neccessary free memory on end of heap
1113         if (colflag == 1)
1114                 *newchunk = SWAP32(dsize | 1);
1115
1116         chunk = heap_addr;
1117         csize = ((u32)*chunk) & 0xfffffffc;
1118         cstat = ((u32)*chunk) & 1;
1119         dsize = (a0 + 3) & 0xfffffffc;
1120
1121         // exit on uninitialized heap
1122         if (chunk == NULL) {
1123                 printf("malloc %x,%x: Uninitialized Heap!\n", v0, a0);
1124                 v0 = 0;
1125                 pc0 = ra;
1126                 return;
1127         }
1128
1129         // search an unused chunk that is big enough until the end of the heap
1130         while ((dsize > csize || cstat==0) && chunk < heap_end ) {
1131                 chunk = (u32*)((uptr)chunk + csize + 4);
1132
1133                         // catch out of memory
1134                         if(chunk >= heap_end) {
1135                                 printf("malloc %x,%x: Out of memory error!\n",
1136                                         v0, a0);
1137                                 v0 = 0; pc0 = ra;
1138                                 return;
1139                         }
1140
1141                 csize = ((u32)*chunk) & 0xfffffffc;
1142                 cstat = ((u32)*chunk) & 1;
1143         }
1144
1145         // allocate memory
1146         if(dsize == csize) {
1147                 // chunk has same size
1148                 *chunk &= 0xfffffffc;
1149         } else if (dsize > csize) {
1150                 v0 = 0; pc0 = ra;
1151                 return;
1152         } else {
1153                 // split free chunk
1154                 *chunk = SWAP32(dsize);
1155                 newchunk = (u32*)((uptr)chunk + dsize + 4);
1156                 *newchunk = SWAP32(((csize - dsize - 4) & 0xfffffffc) | 1);
1157         }
1158
1159         // return pointer to allocated memory
1160         v0 = ((uptr)chunk - (uptr)psxM) + 4;
1161         v0|= 0x80000000;
1162         //printf ("malloc %x,%x\n", v0, a0);
1163         pc0 = ra;
1164 }
1165
1166 void psxBios_free() { // 0x34
1167
1168 #ifdef PSXBIOS_LOG
1169         PSXBIOS_LOG("psxBios_%s\n", biosA0n[0x34]);
1170 #endif
1171
1172         SysPrintf("free %x: %x bytes\n", a0, *(u32*)(Ra0-4));
1173
1174         if (a0)
1175                 *(u32*)(Ra0-4) |= 1;    // set chunk to free
1176         pc0 = ra;
1177 }
1178
1179 void psxBios_calloc() { // 0x37
1180         void *pv0;
1181 #ifdef PSXBIOS_LOG
1182         PSXBIOS_LOG("psxBios_%s\n", biosA0n[0x37]);
1183 #endif
1184
1185         a0 = a0 * a1;
1186         psxBios_malloc();
1187         pv0 = Rv0;
1188         if (pv0)
1189                 memset(pv0, 0, a0);
1190 }
1191
1192 void psxBios_realloc() { // 0x38
1193         u32 block = a0;
1194         u32 size = a1;
1195 #ifdef PSXBIOS_LOG
1196         PSXBIOS_LOG("psxBios_%s\n", biosA0n[0x38]);
1197 #endif
1198
1199         a0 = block;
1200         /* If "old_buf" is zero, executes malloc(new_size), and returns r2=new_buf (or 0=failed). */
1201         if (block == 0)
1202         {
1203                 psxBios_malloc();
1204         }
1205         /* Else, if "new_size" is zero, executes free(old_buf), and returns r2=garbage. */
1206         else if (size == 0)
1207         {
1208                 psxBios_free();
1209         }
1210         /* Else, executes malloc(new_size), bcopy(old_buf,new_buf,new_size), and free(old_buf), and returns r2=new_buf (or 0=failed). */
1211         /* Note that it is not quite implemented this way here. */
1212         else
1213         {
1214                 psxBios_free();
1215                 a0 = size;
1216                 psxBios_malloc();
1217         }
1218 }
1219
1220
1221 /* InitHeap(void *block , int n) */
1222 void psxBios_InitHeap() { // 0x39
1223         unsigned int size;
1224
1225 #ifdef PSXBIOS_LOG
1226         PSXBIOS_LOG("psxBios_%s\n", biosA0n[0x39]);
1227 #endif
1228
1229         if (((a0 & 0x1fffff) + a1)>= 0x200000) size = 0x1ffffc - (a0 & 0x1fffff);
1230         else size = a1;
1231
1232         size &= 0xfffffffc;
1233
1234         heap_addr = (u32 *)Ra0;
1235         heap_size = size;
1236         heap_end = (u32 *)((u8 *)heap_addr + heap_size);
1237         /* HACKFIX: Commenting out this line fixes GTA2 crash */
1238         //*heap_addr = SWAP32(size | 1);
1239
1240         SysPrintf("InitHeap %x,%x : %x %x\n",a0,a1, (int)((uptr)heap_addr-(uptr)psxM), size);
1241
1242         pc0 = ra;
1243 }
1244
1245 void psxBios_getchar() { //0x3b
1246         v0 = getchar(); pc0 = ra;
1247 }
1248
1249 void psxBios_printf() { // 0x3f
1250         char tmp[1024];
1251         char tmp2[1024];
1252         u32 save[4];
1253         char *ptmp = tmp;
1254         int n=1, i=0, j;
1255         void *psp;
1256
1257         psp = PSXM(sp);
1258         if (psp) {
1259                 memcpy(save, psp, 4 * 4);
1260                 psxMu32ref(sp) = SWAP32((u32)a0);
1261                 psxMu32ref(sp + 4) = SWAP32((u32)a1);
1262                 psxMu32ref(sp + 8) = SWAP32((u32)a2);
1263                 psxMu32ref(sp + 12) = SWAP32((u32)a3);
1264         }
1265
1266         while (Ra0[i]) {
1267                 switch (Ra0[i]) {
1268                         case '%':
1269                                 j = 0;
1270                                 tmp2[j++] = '%';
1271 _start:
1272                                 switch (Ra0[++i]) {
1273                                         case '.':
1274                                         case 'l':
1275                                                 tmp2[j++] = Ra0[i]; goto _start;
1276                                         default:
1277                                                 if (Ra0[i] >= '0' && Ra0[i] <= '9') {
1278                                                         tmp2[j++] = Ra0[i];
1279                                                         goto _start;
1280                                                 }
1281                                                 break;
1282                                 }
1283                                 tmp2[j++] = Ra0[i];
1284                                 tmp2[j] = 0;
1285
1286                                 switch (Ra0[i]) {
1287                                         case 'f': case 'F':
1288                                                 ptmp += sprintf(ptmp, tmp2, (float)psxMu32(sp + n * 4)); n++; break;
1289                                         case 'a': case 'A':
1290                                         case 'e': case 'E':
1291                                         case 'g': case 'G':
1292                                                 ptmp += sprintf(ptmp, tmp2, (double)psxMu32(sp + n * 4)); n++; break;
1293                                         case 'p':
1294                                         case 'i': case 'u':
1295                                         case 'd': case 'D':
1296                                         case 'o': case 'O':
1297                                         case 'x': case 'X':
1298                                                 ptmp += sprintf(ptmp, tmp2, (unsigned int)psxMu32(sp + n * 4)); n++; break;
1299                                         case 'c':
1300                                                 ptmp += sprintf(ptmp, tmp2, (unsigned char)psxMu32(sp + n * 4)); n++; break;
1301                                         case 's':
1302                                                 ptmp += sprintf(ptmp, tmp2, (char*)PSXM(psxMu32(sp + n * 4))); n++; break;
1303                                         case '%':
1304                                                 *ptmp++ = Ra0[i]; break;
1305                                 }
1306                                 i++;
1307                                 break;
1308                         default:
1309                                 *ptmp++ = Ra0[i++];
1310                 }
1311         }
1312         *ptmp = 0;
1313
1314         if (psp)
1315                 memcpy(psp, save, 4 * 4);
1316
1317         SysPrintf("%s", tmp);
1318
1319         pc0 = ra;
1320 }
1321
1322 void psxBios_format() { // 0x41
1323         if (strcmp(Ra0, "bu00:") == 0 && Config.Mcd1[0] != '\0')
1324         {
1325                 CreateMcd(Config.Mcd1);
1326                 LoadMcd(1, Config.Mcd1);
1327                 v0 = 1;
1328         }
1329         else if (strcmp(Ra0, "bu10:") == 0 && Config.Mcd2[0] != '\0')
1330         {
1331                 CreateMcd(Config.Mcd2);
1332                 LoadMcd(2, Config.Mcd2);
1333                 v0 = 1;
1334         }
1335         else
1336         {
1337                 v0 = 0;
1338         }
1339         pc0 = ra;
1340 }
1341
1342 /*
1343  *      long Load(char *name, struct EXEC *header);
1344  */
1345
1346 void psxBios_Load() { // 0x42
1347         EXE_HEADER eheader;
1348         void *pa1;
1349
1350 #ifdef PSXBIOS_LOG
1351         PSXBIOS_LOG("psxBios_%s: %s, %x\n", biosA0n[0x42], Ra0, a1);
1352 #endif
1353
1354         pa1 = Ra1;
1355         if (pa1 && LoadCdromFile(Ra0, &eheader) == 0) {
1356                 memcpy(pa1, ((char*)&eheader)+16, sizeof(EXEC));
1357                 v0 = 1;
1358         } else v0 = 0;
1359
1360         pc0 = ra;
1361 }
1362
1363 /*
1364  *      int Exec(struct EXEC *header , int argc , char **argv);
1365  */
1366
1367 void psxBios_Exec() { // 43
1368         EXEC *header = (EXEC*)Ra0;
1369         u32 tmp;
1370
1371 #ifdef PSXBIOS_LOG
1372         PSXBIOS_LOG("psxBios_%s: %x, %x, %x\n", biosA0n[0x43], a0, a1, a2);
1373 #endif
1374
1375         header->_sp = sp;
1376         header->_fp = fp;
1377         header->_sp = sp;
1378         header->_gp = gp;
1379         header->ret = ra;
1380         header->base = s0;
1381
1382         if (header->S_addr != 0) {
1383                 tmp = header->S_addr + header->s_size;
1384                 sp = tmp;
1385                 fp = sp;
1386         }
1387
1388         gp = header->gp0;
1389
1390         s0 = a0;
1391
1392         a0 = a1;
1393         a1 = a2;
1394
1395         ra = 0x8000;
1396         pc0 = header->_pc0;
1397 }
1398
1399 void psxBios_FlushCache() { // 44
1400 #ifdef PSXBIOS_LOG
1401         PSXBIOS_LOG("psxBios_%s\n", biosA0n[0x44]);
1402 #endif
1403
1404         pc0 = ra;
1405 }
1406
1407 void psxBios_GPU_dw() { // 0x46
1408         int size;
1409         s32 *ptr;
1410
1411 #ifdef PSXBIOS_LOG
1412         PSXBIOS_LOG("psxBios_%s\n", biosA0n[0x46]);
1413 #endif
1414
1415         GPU_writeData(0xa0000000);
1416         GPU_writeData((a1<<16)|(a0&0xffff));
1417         GPU_writeData((a3<<16)|(a2&0xffff));
1418         size = (a2*a3+1)/2;
1419         ptr = (s32*)PSXM(Rsp[4]);  //that is correct?
1420         do {
1421                 GPU_writeData(SWAP32(*ptr));
1422                 ptr++;
1423         } while(--size);
1424
1425         pc0 = ra;
1426 }
1427
1428 void psxBios_mem2vram() { // 0x47
1429         int size;
1430
1431         GPU_writeData(0xa0000000);
1432         GPU_writeData((a1<<16)|(a0&0xffff));
1433         GPU_writeData((a3<<16)|(a2&0xffff));
1434         size = (a2*a3+1)/2;
1435         GPU_writeStatus(0x04000002);
1436         psxHwWrite32(0x1f8010f4,0);
1437         psxHwWrite32(0x1f8010f0,psxHwRead32(0x1f8010f0)|0x800);
1438         psxHwWrite32(0x1f8010a0,Rsp[4]);//might have a buggy...
1439         psxHwWrite32(0x1f8010a4,((size/16)<<16)|16);
1440         psxHwWrite32(0x1f8010a8,0x01000201);
1441
1442         pc0 = ra;
1443 }
1444
1445 void psxBios_SendGPU() { // 0x48
1446         GPU_writeStatus(a0);
1447         gpuSyncPluginSR();
1448         pc0 = ra;
1449 }
1450
1451 void psxBios_GPU_cw() { // 0x49
1452         GPU_writeData(a0);
1453         pc0 = ra;
1454 }
1455
1456 void psxBios_GPU_cwb() { // 0x4a
1457         s32 *ptr = (s32*)Ra0;
1458         int size = a1;
1459         while(size--) {
1460                 GPU_writeData(SWAP32(*ptr));
1461                 ptr++;
1462         }
1463
1464         pc0 = ra;
1465 }
1466
1467 void psxBios_GPU_SendPackets() { //4b:
1468         GPU_writeStatus(0x04000002);
1469         psxHwWrite32(0x1f8010f4,0);
1470         psxHwWrite32(0x1f8010f0,psxHwRead32(0x1f8010f0)|0x800);
1471         psxHwWrite32(0x1f8010a0,a0);
1472         psxHwWrite32(0x1f8010a4,0);
1473         psxHwWrite32(0x1f8010a8,0x010000401);
1474         pc0 = ra;
1475 }
1476
1477 void psxBios_sys_a0_4c() { // 0x4c GPU relate
1478         psxHwWrite32(0x1f8010a8,0x00000401);
1479         GPU_writeData(0x0400000);
1480         GPU_writeData(0x0200000);
1481         GPU_writeData(0x0100000);
1482         v0 = 0x1f801814;
1483         pc0 = ra;
1484 }
1485
1486 void psxBios_GPU_GetGPUStatus() { // 0x4d
1487         v0 = GPU_readStatus();
1488         pc0 = ra;
1489 }
1490
1491 #undef s_addr
1492
1493 void psxBios_LoadExec() { // 51
1494         EXEC *header = (EXEC*)PSXM(0xf000);
1495         u32 s_addr, s_size;
1496
1497 #ifdef PSXBIOS_LOG
1498         PSXBIOS_LOG("psxBios_%s: %s: %x,%x\n", biosA0n[0x51], Ra0, a1, a2);
1499 #endif
1500         s_addr = a1; s_size = a2;
1501
1502         a1 = 0xf000;
1503         psxBios_Load();
1504
1505         header->S_addr = s_addr;
1506         header->s_size = s_size;
1507
1508         a0 = 0xf000; a1 = 0; a2 = 0;
1509         psxBios_Exec();
1510 }
1511
1512 void psxBios__bu_init() { // 70
1513 #ifdef PSXBIOS_LOG
1514         PSXBIOS_LOG("psxBios_%s\n", biosA0n[0x70]);
1515 #endif
1516
1517         DeliverEvent(0x11, 0x2); // 0xf0000011, 0x0004
1518         DeliverEvent(0x81, 0x2); // 0xf4000001, 0x0004
1519
1520         pc0 = ra;
1521 }
1522
1523 void psxBios__96_init() { // 71
1524 #ifdef PSXBIOS_LOG
1525         PSXBIOS_LOG("psxBios_%s\n", biosA0n[0x71]);
1526 #endif
1527
1528         pc0 = ra;
1529 }
1530
1531 void psxBios__96_remove() { // 72
1532 #ifdef PSXBIOS_LOG
1533         PSXBIOS_LOG("psxBios_%s\n", biosA0n[0x72]);
1534 #endif
1535
1536         pc0 = ra;
1537 }
1538
1539 void psxBios_SetMem() { // 9f
1540         u32 new = psxHu32(0x1060);
1541
1542 #ifdef PSXBIOS_LOG
1543         PSXBIOS_LOG("psxBios_%s: %x, %x\n", biosA0n[0x9f], a0, a1);
1544 #endif
1545
1546         switch(a0) {
1547                 case 2:
1548                         psxHu32ref(0x1060) = SWAP32(new);
1549                         psxMu32ref(0x060) = a0;
1550                         SysPrintf("Change effective memory : %d MBytes\n",a0);
1551                         break;
1552
1553                 case 8:
1554                         psxHu32ref(0x1060) = SWAP32(new | 0x300);
1555                         psxMu32ref(0x060) = a0;
1556                         SysPrintf("Change effective memory : %d MBytes\n",a0);
1557
1558                 default:
1559                         SysPrintf("Effective memory must be 2/8 MBytes\n");
1560                 break;
1561         }
1562
1563         pc0 = ra;
1564 }
1565
1566 /* TODO FIXME : Not compliant. -1 indicates failure but using 1 for now. */
1567 void psxBios_get_cd_status(void) //a6
1568 {
1569         v0 = 1;
1570         pc0 = ra;
1571 }
1572
1573 void psxBios__card_info() { // ab
1574 #ifdef PSXBIOS_LOG
1575         PSXBIOS_LOG("psxBios_%s: %x\n", biosA0n[0xab], a0);
1576 #endif
1577         u32 ret;
1578         card_active_chan = a0;
1579
1580         switch (card_active_chan)
1581         {
1582         case 0x00: case 0x01: case 0x02: case 0x03:
1583                 ret = Config.Mcd1[0] ? 0x2 : 0x8;
1584                 break;
1585         case 0x10: case 0x11: case 0x12: case 0x13:
1586                 ret = Config.Mcd2[0] ? 0x2 : 0x8;
1587                 break;
1588         default:
1589 #ifdef PSXBIOS_LOG
1590                 PSXBIOS_LOG("psxBios_%s: UNKNOWN PORT 0x%x\n", biosA0n[0xab], card_active_chan);
1591 #endif
1592                 ret = 0x11;
1593                 break;
1594         }
1595
1596 //      DeliverEvent(0x11, 0x2); // 0xf0000011, 0x0004
1597 //      DeliverEvent(0x11, 0x2); // 0xf0000011, 0x0004
1598         DeliverEvent(0x81, 0x2); // 0xf4000001, 0x0004
1599         DeliverEvent(0x81, ret); // 0xf4000001, 0x0004
1600
1601         v0 = 1; pc0 = ra;
1602 }
1603
1604 void psxBios__card_load() { // ac
1605 #ifdef PSXBIOS_LOG
1606         PSXBIOS_LOG("psxBios_%s: %x\n", biosA0n[0xac], a0);
1607 #endif
1608
1609         card_active_chan = a0;
1610
1611 //      DeliverEvent(0x11, 0x2); // 0xf0000011, 0x0004
1612         DeliverEvent(0x81, 0x2); // 0xf4000001, 0x0004
1613
1614         v0 = 1; pc0 = ra;
1615 }
1616
1617 /* System calls B0 */
1618
1619 void psxBios_SetRCnt() { // 02
1620 #ifdef PSXBIOS_LOG
1621         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x02]);
1622 #endif
1623
1624         a0&= 0x3;
1625         if (a0 != 3) {
1626                 u32 mode=0;
1627
1628                 psxRcntWtarget(a0, a1);
1629                 if (a2&0x1000) mode|= 0x050; // Interrupt Mode
1630                 if (a2&0x0100) mode|= 0x008; // Count to 0xffff
1631                 if (a2&0x0010) mode|= 0x001; // Timer stop mode
1632                 if (a0 == 2) { if (a2&0x0001) mode|= 0x200; } // System Clock mode
1633                 else         { if (a2&0x0001) mode|= 0x100; } // System Clock mode
1634
1635                 psxRcntWmode(a0, mode);
1636         }
1637         pc0 = ra;
1638 }
1639
1640 void psxBios_GetRCnt() { // 03
1641 #ifdef PSXBIOS_LOG
1642         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x03]);
1643 #endif
1644
1645         a0&= 0x3;
1646         if (a0 != 3) v0 = psxRcntRcount(a0);
1647         else v0 = 0;
1648         pc0 = ra;
1649 }
1650
1651 void psxBios_StartRCnt() { // 04
1652 #ifdef PSXBIOS_LOG
1653         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x04]);
1654 #endif
1655
1656         a0&= 0x3;
1657         if (a0 != 3) psxHu32ref(0x1074)|= SWAP32((u32)((1<<(a0+4))));
1658         else psxHu32ref(0x1074)|= SWAPu32(0x1);
1659         v0 = 1; pc0 = ra;
1660 }
1661
1662 void psxBios_StopRCnt() { // 05
1663 #ifdef PSXBIOS_LOG
1664         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x05]);
1665 #endif
1666
1667         a0&= 0x3;
1668         if (a0 != 3) psxHu32ref(0x1074)&= SWAP32((u32)(~(1<<(a0+4))));
1669         else psxHu32ref(0x1074)&= SWAPu32(~0x1);
1670         pc0 = ra;
1671 }
1672
1673 void psxBios_ResetRCnt() { // 06
1674 #ifdef PSXBIOS_LOG
1675         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x06]);
1676 #endif
1677
1678         a0&= 0x3;
1679         if (a0 != 3) {
1680                 psxRcntWmode(a0, 0);
1681                 psxRcntWtarget(a0, 0);
1682                 psxRcntWcount(a0, 0);
1683         }
1684         pc0 = ra;
1685 }
1686
1687
1688 /* gets ev for use with Event */
1689 #define GetEv() \
1690         ev = (a0 >> 24) & 0xf; \
1691         if (ev == 0xf) ev = 0x5; \
1692         ev*= 32; \
1693         ev+= a0&0x1f;
1694
1695 /* gets spec for use with Event */
1696 #define GetSpec() \
1697         spec = 0; \
1698         switch (a1) { \
1699                 case 0x0301: spec = 16; break; \
1700                 case 0x0302: spec = 17; break; \
1701                 default: \
1702                         for (i=0; i<16; i++) if (a1 & (1 << i)) { spec = i; break; } \
1703                         break; \
1704         }
1705
1706 void psxBios_DeliverEvent() { // 07
1707         int ev, spec;
1708         int i;
1709
1710         GetEv();
1711         GetSpec();
1712
1713 #ifdef PSXBIOS_LOG
1714         PSXBIOS_LOG("psxBios_%s %x,%x\n", biosB0n[0x07], ev, spec);
1715 #endif
1716
1717         DeliverEvent(ev, spec);
1718
1719         pc0 = ra;
1720 }
1721
1722 void psxBios_OpenEvent() { // 08
1723         int ev, spec;
1724         int i;
1725
1726         GetEv();
1727         GetSpec();
1728
1729 #ifdef PSXBIOS_LOG
1730         PSXBIOS_LOG("psxBios_%s %x,%x (class:%x, spec:%x, mode:%x, func:%x)\n", biosB0n[0x08], ev, spec, a0, a1, a2, a3);
1731 #endif
1732
1733         Event[ev][spec].status = EvStWAIT;
1734         Event[ev][spec].mode = a2;
1735         Event[ev][spec].fhandler = a3;
1736
1737         v0 = ev | (spec << 8);
1738         pc0 = ra;
1739 }
1740
1741 void psxBios_CloseEvent() { // 09
1742         int ev, spec;
1743
1744         ev   = a0 & 0xff;
1745         spec = (a0 >> 8) & 0xff;
1746
1747 #ifdef PSXBIOS_LOG
1748         PSXBIOS_LOG("psxBios_%s %x,%x\n", biosB0n[0x09], ev, spec);
1749 #endif
1750
1751         Event[ev][spec].status = EvStUNUSED;
1752
1753         v0 = 1; pc0 = ra;
1754 }
1755
1756 void psxBios_WaitEvent() { // 0a
1757         int ev, spec;
1758
1759         ev   = a0 & 0xff;
1760         spec = (a0 >> 8) & 0xff;
1761 #ifdef PSXBIOS_LOG
1762         PSXBIOS_LOG("psxBios_%s %x,%x\n", biosB0n[0x0a], ev, spec);
1763 #endif
1764         if (Event[ev][spec].status == EvStUNUSED)
1765         {
1766                 v0 = 0;
1767                 pc0 = ra;
1768                 return;
1769         }
1770
1771         if (Event[ev][spec].status == EvStALREADY)
1772         {
1773                 /* Callback events (mode=EvMdINTR) do never set the ready flag (and thus WaitEvent would hang forever). */
1774                 if (!(Event[ev][spec].mode == EvMdINTR)) Event[ev][spec].status = EvStACTIVE;
1775                 v0 = 1;
1776                 pc0 = ra;
1777                 return;
1778         }
1779
1780         v0 = 0;
1781         pc0 = ra;
1782 }
1783
1784 void psxBios_TestEvent() { // 0b
1785         int ev, spec;
1786
1787         ev   = a0 & 0xff;
1788         spec = (a0 >> 8) & 0xff;
1789
1790         if (Event[ev][spec].status == EvStALREADY)
1791         {
1792                 if (!(Event[ev][spec].mode == EvMdINTR)) Event[ev][spec].status = EvStACTIVE;
1793                 v0 = 1;
1794         }
1795         else
1796         {
1797                 v0 = 0;
1798         }
1799
1800 #ifdef PSXBIOS_LOG
1801         PSXBIOS_LOG("psxBios_%s %x,%x: %x\n", biosB0n[0x0b], ev, spec, v0);
1802 #endif
1803
1804         pc0 = ra;
1805 }
1806
1807 void psxBios_EnableEvent() { // 0c
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[0x0c], ev, spec);
1815 #endif
1816
1817         Event[ev][spec].status = EvStACTIVE;
1818
1819         v0 = 1; pc0 = ra;
1820 }
1821
1822 void psxBios_DisableEvent() { // 0d
1823         int ev, spec;
1824
1825         ev   = a0 & 0xff;
1826         spec = (a0 >> 8) & 0xff;
1827
1828 #ifdef PSXBIOS_LOG
1829         PSXBIOS_LOG("psxBios_%s %x,%x\n", biosB0n[0x0d], ev, spec);
1830 #endif
1831
1832         Event[ev][spec].status = EvStWAIT;
1833
1834         v0 = 1; pc0 = ra;
1835 }
1836
1837 /*
1838  *      long OpenTh(long (*func)(), unsigned long sp, unsigned long gp);
1839  */
1840
1841 void psxBios_OpenTh() { // 0e
1842         int th;
1843
1844         for (th=1; th<8; th++)
1845         {
1846                 if (Thread[th].status == 0) break;
1847
1848         }
1849         if (th == 8) {
1850                 // Feb 2019 - Added out-of-bounds fix caught by cppcheck:
1851                 // When no free TCB is found, return 0xffffffff according to Nocash doc.
1852 #ifdef PSXBIOS_LOG
1853                 PSXBIOS_LOG("\t%s() WARNING! No Free TCBs found!\n", __func__);
1854 #endif
1855                 v0 = 0xffffffff;
1856                 pc0 = ra;
1857                 return;
1858         }
1859 #ifdef PSXBIOS_LOG
1860         PSXBIOS_LOG("psxBios_%s: %x\n", biosB0n[0x0e], th);
1861 #endif
1862
1863         Thread[th].status = 1;
1864         Thread[th].func    = a0;
1865         Thread[th].reg[29] = a1;
1866         Thread[th].reg[28] = a2;
1867
1868         v0 = th; pc0 = ra;
1869 }
1870
1871 /*
1872  *      int CloseTh(long thread);
1873  */
1874
1875 void psxBios_CloseTh() { // 0f
1876         int th = a0 & 0xff;
1877
1878 #ifdef PSXBIOS_LOG
1879         PSXBIOS_LOG("psxBios_%s: %x\n", biosB0n[0x0f], th);
1880 #endif
1881         /* The return value is always 1 (even if the handle was already closed). */
1882         v0 = 1;
1883         if (Thread[th].status != 0) {
1884                 Thread[th].status = 0;
1885         }
1886
1887         pc0 = ra;
1888 }
1889
1890 /*
1891  *      int ChangeTh(long thread);
1892  */
1893
1894 void psxBios_ChangeTh() { // 10
1895         int th = a0 & 0xff;
1896
1897 #ifdef PSXBIOS_LOG
1898 //      PSXBIOS_LOG("psxBios_%s: %x\n", biosB0n[0x10], th);
1899 #endif
1900         /* The return value is always 1. */
1901         v0 = 1;
1902         if (Thread[th].status == 0 || CurThread == th) {
1903                 pc0 = ra;
1904         } else {
1905                 if (Thread[CurThread].status == 2) {
1906                         Thread[CurThread].status = 1;
1907                         Thread[CurThread].func = ra;
1908                         memcpy(Thread[CurThread].reg, psxRegs.GPR.r, 32*4);
1909                 }
1910
1911                 memcpy(psxRegs.GPR.r, Thread[th].reg, 32*4);
1912                 pc0 = Thread[th].func;
1913                 Thread[th].status = 2;
1914                 CurThread = th;
1915         }
1916 }
1917
1918 void psxBios_InitPAD() { // 0x12
1919 #ifdef PSXBIOS_LOG
1920         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x12]);
1921 #endif
1922
1923         pad_buf1 = (char*)Ra0;
1924         pad_buf1len = a1;
1925         pad_buf2 = (char*)Ra2;
1926         pad_buf2len = a3;
1927
1928         v0 = 1; pc0 = ra;
1929 }
1930
1931 void psxBios_StartPAD() { // 13
1932 #ifdef PSXBIOS_LOG
1933         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x13]);
1934 #endif
1935         pad_stopped = 0;
1936         psxHwWrite16(0x1f801074, (unsigned short)(psxHwRead16(0x1f801074) | 0x1));
1937         psxRegs.CP0.n.Status |= 0x401;
1938         pc0 = ra;
1939 }
1940
1941 void psxBios_StopPAD() { // 14
1942 #ifdef PSXBIOS_LOG
1943         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x14]);
1944 #endif
1945         pad_stopped = 1;
1946         pad_buf1 = NULL;
1947         pad_buf2 = NULL;
1948         pc0 = ra;
1949 }
1950
1951 void psxBios_PAD_init() { // 15
1952 #ifdef PSXBIOS_LOG
1953         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x15]);
1954 #endif
1955         if (!(a0 == 0x20000000 || a0 == 0x20000001))
1956         {
1957                 v0 = 0;
1958                 pc0 = ra;
1959                 return;
1960         }
1961         psxHwWrite16(0x1f801074, (u16)(psxHwRead16(0x1f801074) | 0x1));
1962         pad_buf = (int *)Ra1;
1963         *pad_buf = -1;
1964         psxRegs.CP0.n.Status |= 0x401;
1965         v0 = 2;
1966         pc0 = ra;
1967 }
1968
1969 void psxBios_PAD_dr() { // 16
1970 #ifdef PSXBIOS_LOG
1971         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x16]);
1972 #endif
1973
1974         v0 = -1; pc0 = ra;
1975 }
1976
1977 void psxBios_ReturnFromException() { // 17
1978         LoadRegs();
1979
1980         pc0 = psxRegs.CP0.n.EPC;
1981         k0 = interrupt_r26;
1982         if (psxRegs.CP0.n.Cause & 0x80000000) pc0 += 4;
1983
1984         psxRegs.CP0.n.Status = (psxRegs.CP0.n.Status & 0xfffffff0) |
1985                                                   ((psxRegs.CP0.n.Status & 0x3c) >> 2);
1986 }
1987
1988 void psxBios_ResetEntryInt() { // 18
1989 #ifdef PSXBIOS_LOG
1990         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x18]);
1991 #endif
1992
1993         jmp_int = NULL;
1994         pc0 = ra;
1995 }
1996
1997 void psxBios_HookEntryInt() { // 19
1998 #ifdef PSXBIOS_LOG
1999         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x19]);
2000 #endif
2001
2002         jmp_int = (u32*)Ra0;
2003         pc0 = ra;
2004 }
2005
2006 void psxBios_UnDeliverEvent() { // 0x20
2007         int ev, spec;
2008         int i;
2009
2010         GetEv();
2011         GetSpec();
2012
2013 #ifdef PSXBIOS_LOG
2014         PSXBIOS_LOG("psxBios_%s %x,%x\n", biosB0n[0x20], ev, spec);
2015 #endif
2016
2017         if (Event[ev][spec].status == EvStALREADY &&
2018                 Event[ev][spec].mode == EvMdNOINTR)
2019                 Event[ev][spec].status = EvStACTIVE;
2020
2021         pc0 = ra;
2022 }
2023
2024 char ffile[64], *pfile;
2025 int nfile;
2026 static void buopen(int mcd, u8 *ptr, u8 *cfg)
2027 {
2028         int i;
2029         u8 *fptr = ptr;
2030
2031         strcpy(FDesc[1 + mcd].name, Ra0+5);
2032         FDesc[1 + mcd].offset = 0;
2033         FDesc[1 + mcd].mode   = a1;
2034
2035         for (i=1; i<16; i++) {
2036                 fptr += 128;
2037                 if ((*fptr & 0xF0) != 0x50) continue;
2038                 if (strcmp(FDesc[1 + mcd].name, fptr+0xa)) continue;
2039                 FDesc[1 + mcd].mcfile = i;
2040                 SysPrintf("open %s\n", fptr+0xa);
2041                 v0 = 1 + mcd;
2042                 break;
2043         }
2044         if (a1 & 0x200 && v0 == -1) { /* FCREAT */
2045                 fptr = ptr;
2046                 for (i=1; i<16; i++) {
2047                         int j, xor, nblk = a1 >> 16;
2048                         u8 *pptr, *fptr2;
2049
2050                         fptr += 128;
2051                         if ((*fptr & 0xF0) != 0xa0) continue;
2052
2053                         FDesc[1 + mcd].mcfile = i;
2054                         fptr[0] = 0x51;
2055                         fptr[4] = 0x00;
2056                         fptr[5] = 0x20 * nblk;
2057                         fptr[6] = 0x00;
2058                         fptr[7] = 0x00;
2059                         strcpy(fptr+0xa, FDesc[1 + mcd].name);
2060                         pptr = fptr2 = fptr;
2061                         for(j=2; j<=nblk; j++) {
2062                                 int k;
2063                                 for(i++; i<16; i++) {
2064                                         fptr2 += 128;
2065
2066                                         memset(fptr2, 0, 128);
2067                                         fptr2[0] = j < nblk ? 0x52 : 0x53;
2068                                         pptr[8] = i - 1;
2069                                         pptr[9] = 0;
2070                                         for (k=0, xor=0; k<127; k++) xor^= pptr[k];
2071                                         pptr[127] = xor;
2072                                         pptr = fptr2;
2073                                         break;
2074                                 }
2075                                 /* shouldn't this return ENOSPC if i == 16? */
2076                         }
2077                         pptr[8] = pptr[9] = 0xff;
2078                         for (j=0, xor=0; j<127; j++) xor^= pptr[j];
2079                         pptr[127] = xor;
2080                         SysPrintf("openC %s %d\n", ptr, nblk);
2081                         v0 = 1 + mcd;
2082                         /* just go ahead and resave them all */
2083                         SaveMcd(cfg, ptr, 128, 128 * 15);
2084                         break;
2085                 }
2086                 /* shouldn't this return ENOSPC if i == 16? */
2087         }
2088 }
2089
2090 /*
2091  *      int open(char *name , int mode);
2092  */
2093
2094 void psxBios_open() { // 0x32
2095         int i;
2096         char *ptr;
2097         void *pa0 = Ra0;
2098
2099 #ifdef PSXBIOS_LOG
2100         PSXBIOS_LOG("psxBios_%s: %s,%x\n", biosB0n[0x32], Ra0, a1);
2101 #endif
2102
2103         v0 = -1;
2104
2105         if (pa0) {
2106                 if (!strncmp(pa0, "bu00", 4)) {
2107                         buopen(1, Mcd1Data, Config.Mcd1);
2108                 }
2109
2110                 if (!strncmp(pa0, "bu10", 4)) {
2111                         buopen(2, Mcd2Data, Config.Mcd2);
2112                 }
2113         }
2114
2115         pc0 = ra;
2116 }
2117
2118 /*
2119  *      int lseek(int fd , int offset , int whence);
2120  */
2121
2122 void psxBios_lseek() { // 0x33
2123 #ifdef PSXBIOS_LOG
2124         PSXBIOS_LOG("psxBios_%s: %x, %x, %x\n", biosB0n[0x33], a0, a1, a2);
2125 #endif
2126
2127         switch (a2) {
2128                 case 0: // SEEK_SET
2129                         FDesc[a0].offset = a1;
2130                         v0 = a1;
2131 //                      DeliverEvent(0x11, 0x2); // 0xf0000011, 0x0004
2132 //                      DeliverEvent(0x81, 0x2); // 0xf4000001, 0x0004
2133                         break;
2134
2135                 case 1: // SEEK_CUR
2136                         FDesc[a0].offset+= a1;
2137                         v0 = FDesc[a0].offset;
2138                         break;
2139         }
2140
2141         pc0 = ra;
2142 }
2143
2144
2145 /*
2146  *      int read(int fd , void *buf , int nbytes);
2147  */
2148
2149 void psxBios_read() { // 0x34
2150         char *ptr;
2151         void *pa1 = Ra1;
2152
2153 #ifdef PSXBIOS_LOG
2154         PSXBIOS_LOG("psxBios_%s: %x, %x, %x\n", biosB0n[0x34], a0, a1, a2);
2155 #endif
2156
2157         v0 = -1;
2158
2159         if (pa1) {
2160                 switch (a0) {
2161                         case 2: buread(pa1, 1, a2); break;
2162                         case 3: buread(pa1, 2, a2); break;
2163                 }
2164         }
2165
2166         pc0 = ra;
2167 }
2168
2169 /*
2170  *      int write(int fd , void *buf , int nbytes);
2171  */
2172
2173 void psxBios_write() { // 0x35/0x03
2174         char *ptr;
2175         void *pa1 = Ra1;
2176
2177 #ifdef PSXBIOS_LOG
2178         PSXBIOS_LOG("psxBios_%s: %x,%x,%x\n", biosB0n[0x35], a0, a1, a2);
2179 #endif
2180
2181         v0 = -1;
2182         if (!pa1) {
2183                 pc0 = ra;
2184                 return;
2185         }
2186
2187         if (a0 == 1) { // stdout
2188                 char *ptr = pa1;
2189
2190                 v0 = a2;
2191                 while (a2 > 0) {
2192                         SysPrintf("%c", *ptr++); a2--;
2193                 }
2194                 pc0 = ra; return;
2195         }
2196
2197         switch (a0) {
2198                 case 2: buwrite(pa1, 1, a2); break;
2199                 case 3: buwrite(pa1, 2, a2); break;
2200         }
2201
2202         pc0 = ra;
2203 }
2204
2205 /*
2206  *      int close(int fd);
2207  */
2208
2209 void psxBios_close() { // 0x36
2210 #ifdef PSXBIOS_LOG
2211         PSXBIOS_LOG("psxBios_%s: %x\n", biosB0n[0x36], a0);
2212 #endif
2213
2214         v0 = a0;
2215         pc0 = ra;
2216 }
2217
2218 void psxBios_putchar() { // 3d
2219         SysPrintf("%c", (char)a0);
2220         pc0 = ra;
2221 }
2222
2223 void psxBios_puts() { // 3e/3f
2224         SysPrintf("%s", Ra0);
2225         pc0 = ra;
2226 }
2227
2228
2229 /* To avoid any issues with different behaviour when using the libc's own strlen instead.
2230  * We want to mimic the PSX's behaviour in this case for bufile. */
2231 static size_t strlen_internal(char* p)
2232 {
2233         size_t size_of_array = 0;
2234         while (*p++) size_of_array++;
2235         return size_of_array;
2236 }
2237
2238 #define bufile(mcd) { \
2239         size_t size_of_name = strlen_internal(dir->name); \
2240         while (nfile < 16) { \
2241                 int match=1; \
2242  \
2243                 ptr = Mcd##mcd##Data + 128 * (nfile + 1); \
2244                 nfile++; \
2245                 if ((*ptr & 0xF0) != 0x50) continue; \
2246                 /* Bug link files show up as free block. */ \
2247                 if (!ptr[0xa]) continue; \
2248                 ptr+= 0xa; \
2249                 if (pfile[0] == 0) { \
2250                         strncpy(dir->name, ptr, sizeof(dir->name) - 1); \
2251                         if (size_of_name < sizeof(dir->name)) dir->name[size_of_name] = '\0'; \
2252                 } else for (i=0; i<20; i++) { \
2253                         if (pfile[i] == ptr[i]) { \
2254                                                                 dir->name[i] = ptr[i]; continue; } \
2255                         if (pfile[i] == '?') { \
2256                                 dir->name[i] = ptr[i]; continue; } \
2257                         if (pfile[i] == '*') { \
2258                                 strcpy(dir->name+i, ptr+i); break; } \
2259                         match = 0; break; \
2260                 } \
2261                 SysPrintf("%d : %s = %s + %s (match=%d)\n", nfile, dir->name, pfile, ptr, match); \
2262                 if (match == 0) { continue; } \
2263                 dir->size = 8192; \
2264                 v0 = _dir; \
2265                 break; \
2266         } \
2267 }
2268
2269 /*
2270  *      struct DIRENTRY* firstfile(char *name,struct DIRENTRY *dir);
2271  */
2272
2273 void psxBios_firstfile() { // 42
2274         struct DIRENTRY *dir = (struct DIRENTRY *)Ra1;
2275         void *pa0 = Ra0;
2276         u32 _dir = a1;
2277         char *ptr;
2278         int i;
2279
2280 #ifdef PSXBIOS_LOG
2281         PSXBIOS_LOG("psxBios_%s: %s\n", biosB0n[0x42], Ra0);
2282 #endif
2283
2284         v0 = 0;
2285
2286         if (pa0) {
2287                 strcpy(ffile, pa0);
2288                 pfile = ffile+5;
2289                 nfile = 0;
2290                 if (!strncmp(pa0, "bu00", 4)) {
2291                         // firstfile() calls _card_read() internally, so deliver it's event
2292                         DeliverEvent(0x11, 0x2);
2293                         bufile(1);
2294                 } else if (!strncmp(pa0, "bu10", 4)) {
2295                         // firstfile() calls _card_read() internally, so deliver it's event
2296                         DeliverEvent(0x11, 0x2);
2297                         bufile(2);
2298                 }
2299         }
2300
2301         pc0 = ra;
2302 }
2303
2304 /*
2305  *      struct DIRENTRY* nextfile(struct DIRENTRY *dir);
2306  */
2307
2308 void psxBios_nextfile() { // 43
2309         struct DIRENTRY *dir = (struct DIRENTRY *)Ra0;
2310         u32 _dir = a0;
2311         char *ptr;
2312         int i;
2313
2314 #ifdef PSXBIOS_LOG
2315         PSXBIOS_LOG("psxBios_%s: %s\n", biosB0n[0x43], dir->name);
2316 #endif
2317
2318         v0 = 0;
2319
2320         if (!strncmp(ffile, "bu00", 4)) {
2321                 bufile(1);
2322         }
2323
2324         if (!strncmp(ffile, "bu10", 4)) {
2325                 bufile(2);
2326         }
2327
2328         pc0 = ra;
2329 }
2330
2331 #define burename(mcd) { \
2332         for (i=1; i<16; i++) { \
2333                 int namelen, j, xor = 0; \
2334                 ptr = Mcd##mcd##Data + 128 * i; \
2335                 if ((*ptr & 0xF0) != 0x50) continue; \
2336                 if (strcmp(Ra0+5, ptr+0xa)) continue; \
2337                 namelen = strlen(Ra1+5); \
2338                 memcpy(ptr+0xa, Ra1+5, namelen); \
2339                 memset(ptr+0xa+namelen, 0, 0x75-namelen); \
2340                 for (j=0; j<127; j++) xor^= ptr[j]; \
2341                 ptr[127] = xor; \
2342                 SaveMcd(Config.Mcd##mcd, Mcd##mcd##Data, 128 * i + 0xa, 0x76); \
2343                 v0 = 1; \
2344                 break; \
2345         } \
2346 }
2347
2348 /*
2349  *      int rename(char *old, char *new);
2350  */
2351
2352 void psxBios_rename() { // 44
2353         void *pa0 = Ra0;
2354         void *pa1 = Ra1;
2355         char *ptr;
2356         int i;
2357
2358 #ifdef PSXBIOS_LOG
2359         PSXBIOS_LOG("psxBios_%s: %s,%s\n", biosB0n[0x44], Ra0, Ra1);
2360 #endif
2361
2362         v0 = 0;
2363
2364         if (pa0 && pa1) {
2365                 if (!strncmp(pa0, "bu00", 4) && !strncmp(pa1, "bu00", 4)) {
2366                         burename(1);
2367                 }
2368
2369                 if (!strncmp(pa0, "bu10", 4) && !strncmp(pa1, "bu10", 4)) {
2370                         burename(2);
2371                 }
2372         }
2373
2374         pc0 = ra;
2375 }
2376
2377
2378 #define budelete(mcd) { \
2379         for (i=1; i<16; i++) { \
2380                 ptr = Mcd##mcd##Data + 128 * i; \
2381                 if ((*ptr & 0xF0) != 0x50) continue; \
2382                 if (strcmp(Ra0+5, ptr+0xa)) continue; \
2383                 *ptr = (*ptr & 0xf) | 0xA0; \
2384                 SaveMcd(Config.Mcd##mcd, Mcd##mcd##Data, 128 * i, 1); \
2385                 SysPrintf("delete %s\n", ptr+0xa); \
2386                 v0 = 1; \
2387                 break; \
2388         } \
2389 }
2390
2391 /*
2392  *      int delete(char *name);
2393  */
2394
2395 void psxBios_delete() { // 45
2396         void *pa0 = Ra0;
2397         char *ptr;
2398         int i;
2399
2400 #ifdef PSXBIOS_LOG
2401         PSXBIOS_LOG("psxBios_%s: %s\n", biosB0n[0x45], Ra0);
2402 #endif
2403
2404         v0 = 0;
2405
2406         if (pa0) {
2407                 if (!strncmp(pa0, "bu00", 4)) {
2408                         budelete(1);
2409                 }
2410
2411                 if (!strncmp(pa0, "bu10", 4)) {
2412                         budelete(2);
2413                 }
2414         }
2415
2416         pc0 = ra;
2417 }
2418
2419 void psxBios_InitCARD() { // 4a
2420 #ifdef PSXBIOS_LOG
2421         PSXBIOS_LOG("psxBios_%s: %x\n", biosB0n[0x4a], a0);
2422 #endif
2423
2424         CardState = 0;
2425
2426         pc0 = ra;
2427 }
2428
2429 void psxBios_StartCARD() { // 4b
2430 #ifdef PSXBIOS_LOG
2431         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x4b]);
2432 #endif
2433
2434         if (CardState == 0) CardState = 1;
2435
2436         pc0 = ra;
2437 }
2438
2439 void psxBios_StopCARD() { // 4c
2440 #ifdef PSXBIOS_LOG
2441         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x4c]);
2442 #endif
2443
2444         if (CardState == 1) CardState = 0;
2445
2446         pc0 = ra;
2447 }
2448
2449 void psxBios__card_write() { // 0x4e
2450         void *pa2 = Ra2;
2451         int port;
2452
2453 #ifdef PSXBIOS_LOG
2454         PSXBIOS_LOG("psxBios_%s: %x,%x,%x\n", biosB0n[0x4e], a0, a1, a2);
2455 #endif
2456         /* Function also accepts sector 400h (a bug) */
2457         if (!(a1 <= 0x400))
2458         {
2459                 /* Invalid sectors */
2460                 v0 = 0; pc0 = ra;
2461                 return;
2462         }
2463         card_active_chan = a0;
2464         port = a0 >> 4;
2465
2466         if (pa2) {
2467                 if (port == 0) {
2468                         memcpy(Mcd1Data + a1 * 128, pa2, 128);
2469                         SaveMcd(Config.Mcd1, Mcd1Data, a1 * 128, 128);
2470                 } else {
2471                         memcpy(Mcd2Data + a1 * 128, pa2, 128);
2472                         SaveMcd(Config.Mcd2, Mcd2Data, a1 * 128, 128);
2473                 }
2474         }
2475
2476         DeliverEvent(0x11, 0x2); // 0xf0000011, 0x0004
2477 //      DeliverEvent(0x81, 0x2); // 0xf4000001, 0x0004
2478
2479         v0 = 1; pc0 = ra;
2480 }
2481
2482 void psxBios__card_read() { // 0x4f
2483         void *pa2 = Ra2;
2484         int port;
2485
2486 #ifdef PSXBIOS_LOG
2487         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x4f]);
2488 #endif
2489         /* Function also accepts sector 400h (a bug) */
2490         if (!(a1 <= 0x400))
2491         {
2492                 /* Invalid sectors */
2493                 v0 = 0; pc0 = ra;
2494                 return;
2495         }
2496         card_active_chan = a0;
2497         port = a0 >> 4;
2498
2499         if (pa2) {
2500                 if (port == 0) {
2501                         memcpy(pa2, Mcd1Data + a1 * 128, 128);
2502                 } else {
2503                         memcpy(pa2, Mcd2Data + a1 * 128, 128);
2504                 }
2505         }
2506
2507         DeliverEvent(0x11, 0x2); // 0xf0000011, 0x0004
2508 //      DeliverEvent(0x81, 0x2); // 0xf4000001, 0x0004
2509
2510         v0 = 1; pc0 = ra;
2511 }
2512
2513 void psxBios__new_card() { // 0x50
2514 #ifdef PSXBIOS_LOG
2515         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x50]);
2516 #endif
2517
2518         pc0 = ra;
2519 }
2520
2521 /* According to a user, this allows Final Fantasy Tactics to save/load properly */
2522 void psxBios__get_error(void) // 55
2523 {
2524         v0 = 0;
2525         pc0 = ra;
2526 }
2527
2528 void psxBios_Krom2RawAdd() { // 0x51
2529         int i = 0;
2530
2531         const u32 table_8140[][2] = {
2532                 {0x8140, 0x0000}, {0x8180, 0x0762}, {0x81ad, 0x0cc6}, {0x81b8, 0x0ca8},
2533                 {0x81c0, 0x0f00}, {0x81c8, 0x0d98}, {0x81cf, 0x10c2}, {0x81da, 0x0e6a},
2534                 {0x81e9, 0x13ce}, {0x81f0, 0x102c}, {0x81f8, 0x1590}, {0x81fc, 0x111c},
2535                 {0x81fd, 0x1626}, {0x824f, 0x113a}, {0x8259, 0x20ee}, {0x8260, 0x1266},
2536                 {0x827a, 0x24cc}, {0x8281, 0x1572}, {0x829b, 0x28aa}, {0x829f, 0x187e},
2537                 {0x82f2, 0x32dc}, {0x8340, 0x2238}, {0x837f, 0x4362}, {0x8380, 0x299a},
2538                 {0x8397, 0x4632}, {0x839f, 0x2c4c}, {0x83b7, 0x49f2}, {0x83bf, 0x2f1c},
2539                 {0x83d7, 0x4db2}, {0x8440, 0x31ec}, {0x8461, 0x5dde}, {0x8470, 0x35ca},
2540                 {0x847f, 0x6162}, {0x8480, 0x378c}, {0x8492, 0x639c}, {0x849f, 0x39a8},
2541                 {0xffff, 0}
2542         };
2543
2544         const u32 table_889f[][2] = {
2545                 {0x889f, 0x3d68},  {0x8900, 0x40ec},  {0x897f, 0x4fb0},  {0x8a00, 0x56f4},
2546                 {0x8a7f, 0x65b8},  {0x8b00, 0x6cfc},  {0x8b7f, 0x7bc0},  {0x8c00, 0x8304},
2547                 {0x8c7f, 0x91c8},  {0x8d00, 0x990c},  {0x8d7f, 0xa7d0},  {0x8e00, 0xaf14},
2548                 {0x8e7f, 0xbdd8},  {0x8f00, 0xc51c},  {0x8f7f, 0xd3e0},  {0x9000, 0xdb24},
2549                 {0x907f, 0xe9e8},  {0x9100, 0xf12c},  {0x917f, 0xfff0},  {0x9200, 0x10734},
2550                 {0x927f, 0x115f8}, {0x9300, 0x11d3c}, {0x937f, 0x12c00}, {0x9400, 0x13344},
2551                 {0x947f, 0x14208}, {0x9500, 0x1494c}, {0x957f, 0x15810}, {0x9600, 0x15f54},
2552                 {0x967f, 0x16e18}, {0x9700, 0x1755c}, {0x977f, 0x18420}, {0x9800, 0x18b64},
2553                 {0xffff, 0}
2554         };
2555
2556         if (a0 >= 0x8140 && a0 <= 0x84be) {
2557                 while (table_8140[i][0] <= a0) i++;
2558                 a0 -= table_8140[i - 1][0];
2559                 v0 = 0xbfc66000 + (a0 * 0x1e + table_8140[i - 1][1]);
2560         } else if (a0 >= 0x889f && a0 <= 0x9872) {
2561                 while (table_889f[i][0] <= a0) i++;
2562                 a0 -= table_889f[i - 1][0];
2563                 v0 = 0xbfc66000 + (a0 * 0x1e + table_889f[i - 1][1]);
2564         } else {
2565                 v0 = 0xffffffff;
2566         }
2567
2568         pc0 = ra;
2569 }
2570
2571 void psxBios_GetC0Table() { // 56
2572 #ifdef PSXBIOS_LOG
2573         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x56]);
2574 #endif
2575
2576         v0 = 0x674; pc0 = ra;
2577 }
2578
2579 void psxBios_GetB0Table() { // 57
2580 #ifdef PSXBIOS_LOG
2581         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x57]);
2582 #endif
2583
2584         v0 = 0x874; pc0 = ra;
2585 }
2586
2587 void psxBios__card_chan() { // 0x58
2588 #ifdef PSXBIOS_LOG
2589         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x58]);
2590 #endif
2591
2592         v0 = card_active_chan;
2593         pc0 = ra;
2594 }
2595
2596 void psxBios_ChangeClearPad() { // 5b
2597 #ifdef PSXBIOS_LOG
2598         PSXBIOS_LOG("psxBios_%s: %x\n", biosB0n[0x5b], a0);
2599 #endif
2600
2601         pc0 = ra;
2602 }
2603
2604 void psxBios__card_status() { // 5c
2605 #ifdef PSXBIOS_LOG
2606         PSXBIOS_LOG("psxBios_%s: %x\n", biosB0n[0x5c], a0);
2607 #endif
2608
2609         v0 = card_active_chan;
2610         pc0 = ra;
2611 }
2612
2613 void psxBios__card_wait() { // 5d
2614 #ifdef PSXBIOS_LOG
2615         PSXBIOS_LOG("psxBios_%s: %x\n", biosB0n[0x5d], a0);
2616 #endif
2617
2618         v0 = 1;
2619         pc0 = ra;
2620 }
2621
2622 /* System calls C0 */
2623
2624 /*
2625  * int SysEnqIntRP(int index , long *queue);
2626  */
2627
2628 void psxBios_SysEnqIntRP() { // 02
2629 #ifdef PSXBIOS_LOG
2630         PSXBIOS_LOG("psxBios_%s: %x\n", biosC0n[0x02] ,a0);
2631 #endif
2632
2633         SysIntRP[a0] = a1;
2634
2635         v0 = 0; pc0 = ra;
2636 }
2637
2638 /*
2639  * int SysDeqIntRP(int index , long *queue);
2640  */
2641
2642 void psxBios_SysDeqIntRP() { // 03
2643 #ifdef PSXBIOS_LOG
2644         PSXBIOS_LOG("psxBios_%s: %x\n", biosC0n[0x03], a0);
2645 #endif
2646
2647         SysIntRP[a0] = 0;
2648
2649         v0 = 0; pc0 = ra;
2650 }
2651
2652 void psxBios_ChangeClearRCnt() { // 0a
2653         u32 *ptr;
2654
2655 #ifdef PSXBIOS_LOG
2656         PSXBIOS_LOG("psxBios_%s: %x, %x\n", biosC0n[0x0a], a0, a1);
2657 #endif
2658
2659         ptr = (u32*)PSXM((a0 << 2) + 0x8600);
2660         v0 = *ptr;
2661         *ptr = a1;
2662
2663 //      psxRegs.CP0.n.Status|= 0x404;
2664         pc0 = ra;
2665 }
2666
2667 void psxBios_dummy() {
2668 #ifdef PSXBIOS_LOG
2669         PSXBIOS_LOG("unk %x call: %x\n", pc0 & 0x1fffff, t1);
2670 #endif
2671         pc0 = ra;
2672 }
2673
2674 void (*biosA0[256])();
2675 void (*biosB0[256])();
2676 void (*biosC0[256])();
2677
2678 #include "sjisfont.h"
2679
2680 void psxBiosInit() {
2681         u32 base, size;
2682         u32 *ptr;
2683         int i;
2684         uLongf len;
2685
2686         for(i = 0; i < 256; i++) {
2687                 biosA0[i] = NULL;
2688                 biosB0[i] = NULL;
2689                 biosC0[i] = NULL;
2690         }
2691         biosA0[0x3e] = psxBios_puts;
2692         biosA0[0x3f] = psxBios_printf;
2693
2694         biosB0[0x3d] = psxBios_putchar;
2695         biosB0[0x3f] = psxBios_puts;
2696
2697         if (!Config.HLE) return;
2698
2699         for(i = 0; i < 256; i++) {
2700                 if (biosA0[i] == NULL) biosA0[i] = psxBios_dummy;
2701                 if (biosB0[i] == NULL) biosB0[i] = psxBios_dummy;
2702                 if (biosC0[i] == NULL) biosC0[i] = psxBios_dummy;
2703         }
2704
2705         biosA0[0x00] = psxBios_open;
2706         biosA0[0x01] = psxBios_lseek;
2707         biosA0[0x02] = psxBios_read;
2708         biosA0[0x03] = psxBios_write;
2709         biosA0[0x04] = psxBios_close;
2710         //biosA0[0x05] = psxBios_ioctl;
2711         //biosA0[0x06] = psxBios_exit;
2712         //biosA0[0x07] = psxBios_sys_a0_07;
2713         biosA0[0x08] = psxBios_getc;
2714         biosA0[0x09] = psxBios_putc;
2715         biosA0[0x0a] = psxBios_todigit;
2716         //biosA0[0x0b] = psxBios_atof;
2717         //biosA0[0x0c] = psxBios_strtoul;
2718         //biosA0[0x0d] = psxBios_strtol;
2719         biosA0[0x0e] = psxBios_abs;
2720         biosA0[0x0f] = psxBios_labs;
2721         biosA0[0x10] = psxBios_atoi;
2722         biosA0[0x11] = psxBios_atol;
2723         //biosA0[0x12] = psxBios_atob;
2724         biosA0[0x13] = psxBios_setjmp;
2725         biosA0[0x14] = psxBios_longjmp;
2726         biosA0[0x15] = psxBios_strcat;
2727         biosA0[0x16] = psxBios_strncat;
2728         biosA0[0x17] = psxBios_strcmp;
2729         biosA0[0x18] = psxBios_strncmp;
2730         biosA0[0x19] = psxBios_strcpy;
2731         biosA0[0x1a] = psxBios_strncpy;
2732         biosA0[0x1b] = psxBios_strlen;
2733         biosA0[0x1c] = psxBios_index;
2734         biosA0[0x1d] = psxBios_rindex;
2735         biosA0[0x1e] = psxBios_strchr;
2736         biosA0[0x1f] = psxBios_strrchr;
2737         biosA0[0x20] = psxBios_strpbrk;
2738         biosA0[0x21] = psxBios_strspn;
2739         biosA0[0x22] = psxBios_strcspn;
2740         biosA0[0x23] = psxBios_strtok;
2741         biosA0[0x24] = psxBios_strstr;
2742         biosA0[0x25] = psxBios_toupper;
2743         biosA0[0x26] = psxBios_tolower;
2744         biosA0[0x27] = psxBios_bcopy;
2745         biosA0[0x28] = psxBios_bzero;
2746         biosA0[0x29] = psxBios_bcmp;
2747         biosA0[0x2a] = psxBios_memcpy;
2748         biosA0[0x2b] = psxBios_memset;
2749         biosA0[0x2c] = psxBios_memmove;
2750         biosA0[0x2d] = psxBios_memcmp;
2751         biosA0[0x2e] = psxBios_memchr;
2752         biosA0[0x2f] = psxBios_rand;
2753         biosA0[0x30] = psxBios_srand;
2754         biosA0[0x31] = psxBios_qsort;
2755         //biosA0[0x32] = psxBios_strtod;
2756         biosA0[0x33] = psxBios_malloc;
2757         biosA0[0x34] = psxBios_free;
2758         //biosA0[0x35] = psxBios_lsearch;
2759         //biosA0[0x36] = psxBios_bsearch;
2760         biosA0[0x37] = psxBios_calloc;
2761         biosA0[0x38] = psxBios_realloc;
2762         biosA0[0x39] = psxBios_InitHeap;
2763         //biosA0[0x3a] = psxBios__exit;
2764         biosA0[0x3b] = psxBios_getchar;
2765         biosA0[0x3c] = psxBios_putchar;
2766         //biosA0[0x3d] = psxBios_gets;
2767         //biosA0[0x40] = psxBios_sys_a0_40;
2768         //biosA0[0x41] = psxBios_LoadTest;
2769         biosA0[0x42] = psxBios_Load;
2770         biosA0[0x43] = psxBios_Exec;
2771         biosA0[0x44] = psxBios_FlushCache;
2772         //biosA0[0x45] = psxBios_InstallInterruptHandler;
2773         biosA0[0x46] = psxBios_GPU_dw;
2774         biosA0[0x47] = psxBios_mem2vram;
2775         biosA0[0x48] = psxBios_SendGPU;
2776         biosA0[0x49] = psxBios_GPU_cw;
2777         biosA0[0x4a] = psxBios_GPU_cwb;
2778         biosA0[0x4b] = psxBios_GPU_SendPackets;
2779         biosA0[0x4c] = psxBios_sys_a0_4c;
2780         biosA0[0x4d] = psxBios_GPU_GetGPUStatus;
2781         //biosA0[0x4e] = psxBios_GPU_sync;
2782         //biosA0[0x4f] = psxBios_sys_a0_4f;
2783         //biosA0[0x50] = psxBios_sys_a0_50;
2784         biosA0[0x51] = psxBios_LoadExec;
2785         //biosA0[0x52] = psxBios_GetSysSp;
2786         //biosA0[0x53] = psxBios_sys_a0_53;
2787         //biosA0[0x54] = psxBios__96_init_a54;
2788         //biosA0[0x55] = psxBios__bu_init_a55;
2789         //biosA0[0x56] = psxBios__96_remove_a56;
2790         //biosA0[0x57] = psxBios_sys_a0_57;
2791         //biosA0[0x58] = psxBios_sys_a0_58;
2792         //biosA0[0x59] = psxBios_sys_a0_59;
2793         //biosA0[0x5a] = psxBios_sys_a0_5a;
2794         //biosA0[0x5b] = psxBios_dev_tty_init;
2795         //biosA0[0x5c] = psxBios_dev_tty_open;
2796         //biosA0[0x5d] = psxBios_sys_a0_5d;
2797         //biosA0[0x5e] = psxBios_dev_tty_ioctl;
2798         //biosA0[0x5f] = psxBios_dev_cd_open;
2799         //biosA0[0x60] = psxBios_dev_cd_read;
2800         //biosA0[0x61] = psxBios_dev_cd_close;
2801         //biosA0[0x62] = psxBios_dev_cd_firstfile;
2802         //biosA0[0x63] = psxBios_dev_cd_nextfile;
2803         //biosA0[0x64] = psxBios_dev_cd_chdir;
2804         //biosA0[0x65] = psxBios_dev_card_open;
2805         //biosA0[0x66] = psxBios_dev_card_read;
2806         //biosA0[0x67] = psxBios_dev_card_write;
2807         //biosA0[0x68] = psxBios_dev_card_close;
2808         //biosA0[0x69] = psxBios_dev_card_firstfile;
2809         //biosA0[0x6a] = psxBios_dev_card_nextfile;
2810         //biosA0[0x6b] = psxBios_dev_card_erase;
2811         //biosA0[0x6c] = psxBios_dev_card_undelete;
2812         //biosA0[0x6d] = psxBios_dev_card_format;
2813         //biosA0[0x6e] = psxBios_dev_card_rename;
2814         //biosA0[0x6f] = psxBios_dev_card_6f;
2815         biosA0[0x70] = psxBios__bu_init;
2816         biosA0[0x71] = psxBios__96_init;
2817         biosA0[0x72] = psxBios__96_remove;
2818         //biosA0[0x73] = psxBios_sys_a0_73;
2819         //biosA0[0x74] = psxBios_sys_a0_74;
2820         //biosA0[0x75] = psxBios_sys_a0_75;
2821         //biosA0[0x76] = psxBios_sys_a0_76;
2822         //biosA0[0x77] = psxBios_sys_a0_77;
2823         //biosA0[0x78] = psxBios__96_CdSeekL;
2824         //biosA0[0x79] = psxBios_sys_a0_79;
2825         //biosA0[0x7a] = psxBios_sys_a0_7a;
2826         //biosA0[0x7b] = psxBios_sys_a0_7b;
2827         //biosA0[0x7c] = psxBios__96_CdGetStatus;
2828         //biosA0[0x7d] = psxBios_sys_a0_7d;
2829         //biosA0[0x7e] = psxBios__96_CdRead;
2830         //biosA0[0x7f] = psxBios_sys_a0_7f;
2831         //biosA0[0x80] = psxBios_sys_a0_80;
2832         //biosA0[0x81] = psxBios_sys_a0_81;
2833         //biosA0[0x82] = psxBios_sys_a0_82;
2834         //biosA0[0x83] = psxBios_sys_a0_83;
2835         //biosA0[0x84] = psxBios_sys_a0_84;
2836         //biosA0[0x85] = psxBios__96_CdStop;
2837         //biosA0[0x86] = psxBios_sys_a0_86;
2838         //biosA0[0x87] = psxBios_sys_a0_87;
2839         //biosA0[0x88] = psxBios_sys_a0_88;
2840         //biosA0[0x89] = psxBios_sys_a0_89;
2841         //biosA0[0x8a] = psxBios_sys_a0_8a;
2842         //biosA0[0x8b] = psxBios_sys_a0_8b;
2843         //biosA0[0x8c] = psxBios_sys_a0_8c;
2844         //biosA0[0x8d] = psxBios_sys_a0_8d;
2845         //biosA0[0x8e] = psxBios_sys_a0_8e;
2846         //biosA0[0x8f] = psxBios_sys_a0_8f;
2847         //biosA0[0x90] = psxBios_sys_a0_90;
2848         //biosA0[0x91] = psxBios_sys_a0_91;
2849         //biosA0[0x92] = psxBios_sys_a0_92;
2850         //biosA0[0x93] = psxBios_sys_a0_93;
2851         //biosA0[0x94] = psxBios_sys_a0_94;
2852         //biosA0[0x95] = psxBios_sys_a0_95;
2853         //biosA0[0x96] = psxBios_AddCDROMDevice;
2854         //biosA0[0x97] = psxBios_AddMemCardDevide;
2855         //biosA0[0x98] = psxBios_DisableKernelIORedirection;
2856         //biosA0[0x99] = psxBios_EnableKernelIORedirection;
2857         //biosA0[0x9a] = psxBios_sys_a0_9a;
2858         //biosA0[0x9b] = psxBios_sys_a0_9b;
2859         //biosA0[0x9c] = psxBios_SetConf;
2860         //biosA0[0x9d] = psxBios_GetConf;
2861         //biosA0[0x9e] = psxBios_sys_a0_9e;
2862         biosA0[0x9f] = psxBios_SetMem;
2863         //biosA0[0xa0] = psxBios__boot;
2864         //biosA0[0xa1] = psxBios_SystemError;
2865         //biosA0[0xa2] = psxBios_EnqueueCdIntr;
2866         //biosA0[0xa3] = psxBios_DequeueCdIntr;
2867         //biosA0[0xa4] = psxBios_sys_a0_a4;
2868         //biosA0[0xa5] = psxBios_ReadSector;
2869         biosA0[0xa6] = psxBios_get_cd_status;
2870         //biosA0[0xa7] = psxBios_bufs_cb_0;
2871         //biosA0[0xa8] = psxBios_bufs_cb_1;
2872         //biosA0[0xa9] = psxBios_bufs_cb_2;
2873         //biosA0[0xaa] = psxBios_bufs_cb_3;
2874         biosA0[0xab] = psxBios__card_info;
2875         biosA0[0xac] = psxBios__card_load;
2876         //biosA0[0axd] = psxBios__card_auto;
2877         //biosA0[0xae] = psxBios_bufs_cd_4;
2878         //biosA0[0xaf] = psxBios_sys_a0_af;
2879         //biosA0[0xb0] = psxBios_sys_a0_b0;
2880         //biosA0[0xb1] = psxBios_sys_a0_b1;
2881         //biosA0[0xb2] = psxBios_do_a_long_jmp
2882         //biosA0[0xb3] = psxBios_sys_a0_b3;
2883         //biosA0[0xb4] = psxBios_sub_function;
2884 //*******************B0 CALLS****************************
2885         //biosB0[0x00] = psxBios_SysMalloc;
2886         //biosB0[0x01] = psxBios_sys_b0_01;
2887         biosB0[0x02] = psxBios_SetRCnt;
2888         biosB0[0x03] = psxBios_GetRCnt;
2889         biosB0[0x04] = psxBios_StartRCnt;
2890         biosB0[0x05] = psxBios_StopRCnt;
2891         biosB0[0x06] = psxBios_ResetRCnt;
2892         biosB0[0x07] = psxBios_DeliverEvent;
2893         biosB0[0x08] = psxBios_OpenEvent;
2894         biosB0[0x09] = psxBios_CloseEvent;
2895         biosB0[0x0a] = psxBios_WaitEvent;
2896         biosB0[0x0b] = psxBios_TestEvent;
2897         biosB0[0x0c] = psxBios_EnableEvent;
2898         biosB0[0x0d] = psxBios_DisableEvent;
2899         biosB0[0x0e] = psxBios_OpenTh;
2900         biosB0[0x0f] = psxBios_CloseTh;
2901         biosB0[0x10] = psxBios_ChangeTh;
2902         //biosB0[0x11] = psxBios_psxBios_b0_11;
2903         biosB0[0x12] = psxBios_InitPAD;
2904         biosB0[0x13] = psxBios_StartPAD;
2905         biosB0[0x14] = psxBios_StopPAD;
2906         biosB0[0x15] = psxBios_PAD_init;
2907         biosB0[0x16] = psxBios_PAD_dr;
2908         biosB0[0x17] = psxBios_ReturnFromException;
2909         biosB0[0x18] = psxBios_ResetEntryInt;
2910         biosB0[0x19] = psxBios_HookEntryInt;
2911         //biosB0[0x1a] = psxBios_sys_b0_1a;
2912         //biosB0[0x1b] = psxBios_sys_b0_1b;
2913         //biosB0[0x1c] = psxBios_sys_b0_1c;
2914         //biosB0[0x1d] = psxBios_sys_b0_1d;
2915         //biosB0[0x1e] = psxBios_sys_b0_1e;
2916         //biosB0[0x1f] = psxBios_sys_b0_1f;
2917         biosB0[0x20] = psxBios_UnDeliverEvent;
2918         //biosB0[0x21] = psxBios_sys_b0_21;
2919         //biosB0[0x22] = psxBios_sys_b0_22;
2920         //biosB0[0x23] = psxBios_sys_b0_23;
2921         //biosB0[0x24] = psxBios_sys_b0_24;
2922         //biosB0[0x25] = psxBios_sys_b0_25;
2923         //biosB0[0x26] = psxBios_sys_b0_26;
2924         //biosB0[0x27] = psxBios_sys_b0_27;
2925         //biosB0[0x28] = psxBios_sys_b0_28;
2926         //biosB0[0x29] = psxBios_sys_b0_29;
2927         //biosB0[0x2a] = psxBios_sys_b0_2a;
2928         //biosB0[0x2b] = psxBios_sys_b0_2b;
2929         //biosB0[0x2c] = psxBios_sys_b0_2c;
2930         //biosB0[0x2d] = psxBios_sys_b0_2d;
2931         //biosB0[0x2e] = psxBios_sys_b0_2e;
2932         //biosB0[0x2f] = psxBios_sys_b0_2f;
2933         //biosB0[0x30] = psxBios_sys_b0_30;
2934         //biosB0[0x31] = psxBios_sys_b0_31;
2935         biosB0[0x32] = psxBios_open;
2936         biosB0[0x33] = psxBios_lseek;
2937         biosB0[0x34] = psxBios_read;
2938         biosB0[0x35] = psxBios_write;
2939         biosB0[0x36] = psxBios_close;
2940         //biosB0[0x37] = psxBios_ioctl;
2941         //biosB0[0x38] = psxBios_exit;
2942         //biosB0[0x39] = psxBios_sys_b0_39;
2943         //biosB0[0x3a] = psxBios_getc;
2944         //biosB0[0x3b] = psxBios_putc;
2945         biosB0[0x3c] = psxBios_getchar;
2946         //biosB0[0x3e] = psxBios_gets;
2947         //biosB0[0x40] = psxBios_cd;
2948         biosB0[0x41] = psxBios_format;
2949         biosB0[0x42] = psxBios_firstfile;
2950         biosB0[0x43] = psxBios_nextfile;
2951         biosB0[0x44] = psxBios_rename;
2952         biosB0[0x45] = psxBios_delete;
2953         //biosB0[0x46] = psxBios_undelete;
2954         //biosB0[0x47] = psxBios_AddDevice;
2955         //biosB0[0x48] = psxBios_RemoteDevice;
2956         //biosB0[0x49] = psxBios_PrintInstalledDevices;
2957         biosB0[0x4a] = psxBios_InitCARD;
2958         biosB0[0x4b] = psxBios_StartCARD;
2959         biosB0[0x4c] = psxBios_StopCARD;
2960         //biosB0[0x4d] = psxBios_sys_b0_4d;
2961         biosB0[0x4e] = psxBios__card_write;
2962         biosB0[0x4f] = psxBios__card_read;
2963         biosB0[0x50] = psxBios__new_card;
2964         biosB0[0x51] = psxBios_Krom2RawAdd;
2965         //biosB0[0x52] = psxBios_sys_b0_52;
2966         //biosB0[0x53] = psxBios_sys_b0_53;
2967         //biosB0[0x54] = psxBios__get_errno;
2968         biosB0[0x55] = psxBios__get_error;
2969         biosB0[0x56] = psxBios_GetC0Table;
2970         biosB0[0x57] = psxBios_GetB0Table;
2971         biosB0[0x58] = psxBios__card_chan;
2972         //biosB0[0x59] = psxBios_sys_b0_59;
2973         //biosB0[0x5a] = psxBios_sys_b0_5a;
2974         biosB0[0x5b] = psxBios_ChangeClearPad;
2975         biosB0[0x5c] = psxBios__card_status;
2976         biosB0[0x5d] = psxBios__card_wait;
2977 //*******************C0 CALLS****************************
2978         //biosC0[0x00] = psxBios_InitRCnt;
2979         //biosC0[0x01] = psxBios_InitException;
2980         biosC0[0x02] = psxBios_SysEnqIntRP;
2981         biosC0[0x03] = psxBios_SysDeqIntRP;
2982         //biosC0[0x04] = psxBios_get_free_EvCB_slot;
2983         //biosC0[0x05] = psxBios_get_free_TCB_slot;
2984         //biosC0[0x06] = psxBios_ExceptionHandler;
2985         //biosC0[0x07] = psxBios_InstallExeptionHandler;
2986         //biosC0[0x08] = psxBios_SysInitMemory;
2987         //biosC0[0x09] = psxBios_SysInitKMem;
2988         biosC0[0x0a] = psxBios_ChangeClearRCnt;
2989         //biosC0[0x0b] = psxBios_SystemError;
2990         //biosC0[0x0c] = psxBios_InitDefInt;
2991         //biosC0[0x0d] = psxBios_sys_c0_0d;
2992         //biosC0[0x0e] = psxBios_sys_c0_0e;
2993         //biosC0[0x0f] = psxBios_sys_c0_0f;
2994         //biosC0[0x10] = psxBios_sys_c0_10;
2995         //biosC0[0x11] = psxBios_sys_c0_11;
2996         //biosC0[0x12] = psxBios_InstallDevices;
2997         //biosC0[0x13] = psxBios_FlushStfInOutPut;
2998         //biosC0[0x14] = psxBios_sys_c0_14;
2999         //biosC0[0x15] = psxBios__cdevinput;
3000         //biosC0[0x16] = psxBios__cdevscan;
3001         //biosC0[0x17] = psxBios__circgetc;
3002         //biosC0[0x18] = psxBios__circputc;
3003         //biosC0[0x19] = psxBios_ioabort;
3004         //biosC0[0x1a] = psxBios_sys_c0_1a
3005         //biosC0[0x1b] = psxBios_KernelRedirect;
3006         //biosC0[0x1c] = psxBios_PatchAOTable;
3007 //************** THE END ***************************************
3008 /**/
3009         base = 0x1000;
3010         size = sizeof(EvCB) * 32;
3011         Event = (void *)&psxR[base]; base += size * 6;
3012         memset(Event, 0, size * 6);
3013         HwEV = Event;
3014         EvEV = Event + 32;
3015         RcEV = Event + 32 * 2;
3016         UeEV = Event + 32 * 3;
3017         SwEV = Event + 32 * 4;
3018         ThEV = Event + 32 * 5;
3019
3020         ptr = (u32 *)&psxM[0x0874]; // b0 table
3021         ptr[0] = SWAPu32(0x4c54 - 0x884);
3022
3023         ptr = (u32 *)&psxM[0x0674]; // c0 table
3024         ptr[6] = SWAPu32(0xc80);
3025
3026         memset(SysIntRP, 0, sizeof(SysIntRP));
3027         memset(Thread, 0, sizeof(Thread));
3028         Thread[0].status = 2; // main thread
3029
3030         pad_stopped = 1;
3031         jmp_int = NULL;
3032         pad_buf = NULL;
3033         pad_buf1 = NULL;
3034         pad_buf2 = NULL;
3035         pad_buf1len = pad_buf2len = 0;
3036         heap_addr = NULL;
3037         heap_end = NULL;
3038         heap_size = 0;
3039         CardState = -1;
3040         CurThread = 0;
3041         memset(FDesc, 0, sizeof(FDesc));
3042         card_active_chan = 0;
3043
3044         psxMu32ref(0x0150) = SWAPu32(0x160);
3045         psxMu32ref(0x0154) = SWAPu32(0x320);
3046         psxMu32ref(0x0160) = SWAPu32(0x248);
3047         strcpy((char *)&psxM[0x248], "bu");
3048 /*      psxMu32ref(0x0ca8) = SWAPu32(0x1f410004);
3049         psxMu32ref(0x0cf0) = SWAPu32(0x3c020000);
3050         psxMu32ref(0x0cf4) = SWAPu32(0x2442641c);
3051         psxMu32ref(0x09e0) = SWAPu32(0x43d0);
3052         psxMu32ref(0x4d98) = SWAPu32(0x946f000a);
3053 */
3054         // opcode HLE
3055         psxRu32ref(0x0000) = SWAPu32((0x3b << 26) | 4);
3056         /* Whatever this does, it actually breaks CTR, even without the uninitiliazed memory patch.
3057         Normally games shouldn't read from address 0 yet they do. See explanation below in details. */
3058         //psxMu32ref(0x0000) = SWAPu32((0x3b << 26) | 0);
3059         psxMu32ref(0x00a0) = SWAPu32((0x3b << 26) | 1);
3060         psxMu32ref(0x00b0) = SWAPu32((0x3b << 26) | 2);
3061         psxMu32ref(0x00c0) = SWAPu32((0x3b << 26) | 3);
3062         psxMu32ref(0x4c54) = SWAPu32((0x3b << 26) | 0);
3063         psxMu32ref(0x8000) = SWAPu32((0x3b << 26) | 5);
3064         psxMu32ref(0x07a0) = SWAPu32((0x3b << 26) | 0);
3065         psxMu32ref(0x0884) = SWAPu32((0x3b << 26) | 0);
3066         psxMu32ref(0x0894) = SWAPu32((0x3b << 26) | 0);
3067
3068         // initial stack pointer for BIOS interrupt
3069         psxMu32ref(0x6c80) = SWAPu32(0x000085c8);
3070
3071         // initial RNG seed
3072         psxMu32ref(0x9010) = SWAPu32(0xac20cc00);
3073
3074         // fonts
3075         len = 0x80000 - 0x66000;
3076         uncompress((Bytef *)(psxR + 0x66000), &len, font_8140, sizeof(font_8140));
3077         len = 0x80000 - 0x69d68;
3078         uncompress((Bytef *)(psxR + 0x69d68), &len, font_889f, sizeof(font_889f));
3079
3080         // memory size 2 MB
3081         psxHu32ref(0x1060) = SWAPu32(0x00000b88);
3082
3083         hleSoftCall = FALSE;
3084
3085         /*      Some games like R-Types, CTR, Fade to Black read from adress 0x00000000 due to uninitialized pointers.
3086                 See Garbage Area at Address 00000000h in Nocash PSX Specfications for more information.
3087                 R-type will work if PsxM[0] is non-zero. (Meaning that it should not be 00000003h as he implies).
3088                 Crash Team Racing will refuse to boot if psxM[2] and psx[3] are not set to 0.
3089                 Fade to Black can crash upon memory card access if byte 5 is set to the wrong value.
3090         */
3091         psxM[0] = SWAPu32(0x3C);
3092         psxM[1] = SWAPu32(0x1A);
3093         psxM[2] = SWAPu32(0x00);
3094         psxM[3] = SWAPu32(0x00);
3095         psxM[4] = SWAPu32(0x27);
3096         psxM[5] = SWAPu32(0x5A);
3097         psxM[6] = SWAPu32(0x0C);
3098         psxM[7] = SWAPu32(0x80);
3099 }
3100
3101 void psxBiosShutdown() {
3102 }
3103
3104 #define psxBios_PADpoll(pad) { \
3105         PAD##pad##_startPoll(pad); \
3106         pad_buf##pad[0] = 0; \
3107         pad_buf##pad[1] = PAD##pad##_poll(0x42); \
3108         if (!(pad_buf##pad[1] & 0x0f)) { \
3109                 bufcount = 32; \
3110         } else { \
3111                 bufcount = (pad_buf##pad[1] & 0x0f) * 2; \
3112         } \
3113         PAD##pad##_poll(0); \
3114         i = 2; \
3115         while (bufcount--) { \
3116                 pad_buf##pad[i++] = PAD##pad##_poll(0); \
3117         } \
3118 }
3119
3120 void biosInterrupt() {
3121         int i, bufcount;
3122
3123 //      if (psxHu32(0x1070) & 0x1) { // Vsync
3124                 if (pad_buf != NULL) {
3125                         u32 *buf = (u32*)pad_buf;
3126
3127                         if (!Config.UseNet) {
3128                                 PAD1_startPoll(1);
3129                                 if (PAD1_poll(0x42) == 0x23) {
3130                                         PAD1_poll(0);
3131                                         *buf = PAD1_poll(0) << 8;
3132                                         *buf |= PAD1_poll(0);
3133                                         PAD1_poll(0);
3134                                         *buf &= ~((PAD1_poll(0) > 0x20) ? 1 << 6 : 0);
3135                                         *buf &= ~((PAD1_poll(0) > 0x20) ? 1 << 7 : 0);
3136                                 } else {
3137                                         PAD1_poll(0);
3138                                         *buf = PAD1_poll(0) << 8;
3139                                         *buf|= PAD1_poll(0);
3140                                 }
3141
3142                                 PAD2_startPoll(2);
3143                                 if (PAD2_poll(0x42) == 0x23) {
3144                                         PAD2_poll(0);
3145                                         *buf |= PAD2_poll(0) << 24;
3146                                         *buf |= PAD2_poll(0) << 16;
3147                                         PAD2_poll(0);
3148                                         *buf &= ~((PAD2_poll(0) > 0x20) ? 1 << 22 : 0);
3149                                         *buf &= ~((PAD2_poll(0) > 0x20) ? 1 << 23 : 0);
3150                                 } else {
3151                                         PAD2_poll(0);
3152                                         *buf |= PAD2_poll(0) << 24;
3153                                         *buf |= PAD2_poll(0) << 16;
3154                                 }
3155                         } else {
3156                                 u16 data;
3157
3158                                 PAD1_startPoll(1);
3159                                 PAD1_poll(0x42);
3160                                 PAD1_poll(0);
3161                                 data = PAD1_poll(0) << 8;
3162                                 data |= PAD1_poll(0);
3163
3164                                 if (NET_sendPadData(&data, 2) == -1)
3165                                         netError();
3166
3167                                 if (NET_recvPadData(&((u16*)buf)[0], 1) == -1)
3168                                         netError();
3169                                 if (NET_recvPadData(&((u16*)buf)[1], 2) == -1)
3170                                         netError();
3171                         }
3172                 }
3173                 if (Config.UseNet && pad_buf1 != NULL && pad_buf2 != NULL) {
3174                         psxBios_PADpoll(1);
3175
3176                         if (NET_sendPadData(pad_buf1, i) == -1)
3177                                 netError();
3178
3179                         if (NET_recvPadData(pad_buf1, 1) == -1)
3180                                 netError();
3181                         if (NET_recvPadData(pad_buf2, 2) == -1)
3182                                 netError();
3183                 } else {
3184                         if (!pad_stopped)  {
3185                                 if (pad_buf1) {
3186                                         psxBios_PADpoll(1);
3187                                 }
3188
3189                                 if (pad_buf2) {
3190                                         psxBios_PADpoll(2);
3191                                 }
3192                         }
3193                 }
3194
3195         if (psxHu32(0x1070) & 0x1) { // Vsync
3196                 if (RcEV[3][1].status == EvStACTIVE) {
3197                         softCall(RcEV[3][1].fhandler);
3198 //                      hwWrite32(0x1f801070, ~(1));
3199                 }
3200         }
3201
3202         if (psxHu32(0x1070) & 0x70) { // Rcnt 0,1,2
3203                 int i;
3204
3205                 for (i = 0; i < 3; i++) {
3206                         if (psxHu32(0x1070) & (1 << (i + 4))) {
3207                                 if (RcEV[i][1].status == EvStACTIVE) {
3208                                         softCall(RcEV[i][1].fhandler);
3209                                 }
3210                                 psxHwWrite32(0x1f801070, ~(1 << (i + 4)));
3211                         }
3212                 }
3213         }
3214 }
3215
3216 void psxBiosException() {
3217         int i;
3218
3219         switch (psxRegs.CP0.n.Cause & 0x3c) {
3220                 case 0x00: // Interrupt
3221                         interrupt_r26=psxRegs.CP0.n.EPC;
3222 #ifdef PSXCPU_LOG
3223 //                      PSXCPU_LOG("interrupt\n");
3224 #endif
3225                         SaveRegs();
3226
3227                         sp = psxMu32(0x6c80); // create new stack for interrupt handlers
3228
3229                         biosInterrupt();
3230
3231                         for (i = 0; i < 8; i++) {
3232                                 if (SysIntRP[i]) {
3233                                         u32 *queue = (u32 *)PSXM(SysIntRP[i]);
3234
3235                                         s0 = queue[2];
3236                                         softCall(queue[1]);
3237                                 }
3238                         }
3239
3240                         if (jmp_int != NULL) {
3241                                 int i;
3242
3243                                 psxHwWrite32(0x1f801070, 0xffffffff);
3244
3245                                 ra = jmp_int[0];
3246                                 sp = jmp_int[1];
3247                                 fp = jmp_int[2];
3248                                 for (i = 0; i < 8; i++) // s0-s7
3249                                          psxRegs.GPR.r[16 + i] = jmp_int[3 + i];
3250                                 gp = jmp_int[11];
3251
3252                                 v0 = 1;
3253                                 pc0 = ra;
3254                                 return;
3255                         }
3256                         psxHwWrite16(0x1f801070, 0);
3257                         break;
3258
3259                 case 0x20: // Syscall
3260 #ifdef PSXCPU_LOG
3261                         PSXCPU_LOG("syscall exp %x\n", a0);
3262 #endif
3263                         switch (a0) {
3264                                 case 1: // EnterCritical - disable irq's
3265                                         /* Fixes Medievil 2 not loading up new game, Digimon World not booting up and possibly others */
3266                                         v0 = (psxRegs.CP0.n.Status & 0x404) == 0x404;
3267                                         psxRegs.CP0.n.Status &= ~0x404;
3268                                         break;
3269
3270                                 case 2: // ExitCritical - enable irq's
3271                                         psxRegs.CP0.n.Status |= 0x404;
3272                                         break;
3273                                 /* Normally this should cover SYS(00h, SYS(04h but they don't do anything relevant so... */
3274                                 default:
3275                                         break;
3276                         }
3277                         pc0 = psxRegs.CP0.n.EPC + 4;
3278
3279                         psxRegs.CP0.n.Status = (psxRegs.CP0.n.Status & 0xfffffff0) |
3280                                                                   ((psxRegs.CP0.n.Status & 0x3c) >> 2);
3281                         return;
3282
3283                 default:
3284 #ifdef PSXCPU_LOG
3285                         PSXCPU_LOG("unknown bios exception!\n");
3286 #endif
3287                         break;
3288         }
3289
3290         pc0 = psxRegs.CP0.n.EPC;
3291         if (psxRegs.CP0.n.Cause & 0x80000000) pc0+=4;
3292
3293         psxRegs.CP0.n.Status = (psxRegs.CP0.n.Status & 0xfffffff0) |
3294                                                   ((psxRegs.CP0.n.Status & 0x3c) >> 2);
3295 }
3296
3297 #define bfreeze(ptr, size) { \
3298         if (Mode == 1) memcpy(&psxR[base], ptr, size); \
3299         if (Mode == 0) memcpy(ptr, &psxR[base], size); \
3300         base += size; \
3301 }
3302
3303 #define bfreezes(ptr) bfreeze(ptr, sizeof(ptr))
3304 #define bfreezel(ptr) bfreeze(ptr, sizeof(*ptr))
3305
3306 #define bfreezepsxMptr(ptr, type) { \
3307         if (Mode == 1) { \
3308                 if (ptr) psxRu32ref(base) = SWAPu32((s8 *)(ptr) - psxM); \
3309                 else psxRu32ref(base) = 0; \
3310         } else { \
3311                 if (psxRu32(base) != 0) ptr = (type *)(psxM + psxRu32(base)); \
3312                 else (ptr) = NULL; \
3313         } \
3314         base += sizeof(u32); \
3315 }
3316
3317 void psxBiosFreeze(int Mode) {
3318         u32 base = 0x40000;
3319
3320         bfreezepsxMptr(jmp_int, u32);
3321         bfreezepsxMptr(pad_buf, int);
3322         bfreezepsxMptr(pad_buf1, char);
3323         bfreezepsxMptr(pad_buf2, char);
3324         bfreezepsxMptr(heap_addr, u32);
3325         bfreezel(&pad_buf1len);
3326         bfreezel(&pad_buf2len);
3327         bfreezes(regs);
3328         bfreezes(SysIntRP);
3329         bfreezel(&CardState);
3330         bfreezes(Thread);
3331         bfreezel(&CurThread);
3332         bfreezes(FDesc);
3333         bfreezel(&card_active_chan);
3334         bfreezel(&pad_stopped);
3335         bfreezel(&heap_size);
3336 }