Pico/carthw/svp/compiler.c

   1 // 187 blocks, 12072 bytes
   2 // 14 IRAM blocks
   3
   4 #include "../../PicoInt.h"
   5
   6 #define TCACHE_SIZE (256*1024)
   7 static unsigned short *block_table[0x5090/2];
   8 static unsigned short *tcache = NULL;
   9 static unsigned short *tcache_ptr = NULL;
  10
  11 static int had_jump = 0;
  12 static int nblocks = 0;
  13
  14 #define EMBED_INTERPRETER
  15 #define ssp1601_reset ssp1601_reset_local
  16 #define ssp1601_run ssp1601_run_local
  17
  18 static unsigned int interp_get_pc(void);
  19
  20 #define GET_PC interp_get_pc
  21 #define GET_PPC_OFFS() (interp_get_pc()*2 - 2)
  22 #define SET_PC(d) { had_jump = 1; rPC = d; }            /* must return to dispatcher after this */
  23 //#define GET_PC() (PC - (unsigned short *)svp->iram_rom)
  24 //#define GET_PPC_OFFS() ((unsigned int)PC - (unsigned int)svp->iram_rom - 2)
  25 //#define SET_PC(d) PC = (unsigned short *)svp->iram_rom + d
  26
  27 #include "ssp16.c"
  28
  29 // -----------------------------------------------------
  30
  31 static unsigned int crctable[256] =
  32 {
  33  0x00000000L, 0x77073096L, 0xEE0E612CL, 0x990951BAL,
  34  0x076DC419L, 0x706AF48FL, 0xE963A535L, 0x9E6495A3L,
  35  0x0EDB8832L, 0x79DCB8A4L, 0xE0D5E91EL, 0x97D2D988L,
  36  0x09B64C2BL, 0x7EB17CBDL, 0xE7B82D07L, 0x90BF1D91L,
  37  0x1DB71064L, 0x6AB020F2L, 0xF3B97148L, 0x84BE41DEL,
  38  0x1ADAD47DL, 0x6DDDE4EBL, 0xF4D4B551L, 0x83D385C7L,
  39  0x136C9856L, 0x646BA8C0L, 0xFD62F97AL, 0x8A65C9ECL,
  40  0x14015C4FL, 0x63066CD9L, 0xFA0F3D63L, 0x8D080DF5L,
  41  0x3B6E20C8L, 0x4C69105EL, 0xD56041E4L, 0xA2677172L,
  42  0x3C03E4D1L, 0x4B04D447L, 0xD20D85FDL, 0xA50AB56BL,
  43  0x35B5A8FAL, 0x42B2986CL, 0xDBBBC9D6L, 0xACBCF940L,
  44  0x32D86CE3L, 0x45DF5C75L, 0xDCD60DCFL, 0xABD13D59L,
  45  0x26D930ACL, 0x51DE003AL, 0xC8D75180L, 0xBFD06116L,
  46  0x21B4F4B5L, 0x56B3C423L, 0xCFBA9599L, 0xB8BDA50FL,
  47  0x2802B89EL, 0x5F058808L, 0xC60CD9B2L, 0xB10BE924L,
  48  0x2F6F7C87L, 0x58684C11L, 0xC1611DABL, 0xB6662D3DL,
  49  0x76DC4190L, 0x01DB7106L, 0x98D220BCL, 0xEFD5102AL,
  50  0x71B18589L, 0x06B6B51FL, 0x9FBFE4A5L, 0xE8B8D433L,
  51  0x7807C9A2L, 0x0F00F934L, 0x9609A88EL, 0xE10E9818L,
  52  0x7F6A0DBBL, 0x086D3D2DL, 0x91646C97L, 0xE6635C01L,
  53  0x6B6B51F4L, 0x1C6C6162L, 0x856530D8L, 0xF262004EL,
  54  0x6C0695EDL, 0x1B01A57BL, 0x8208F4C1L, 0xF50FC457L,
  55  0x65B0D9C6L, 0x12B7E950L, 0x8BBEB8EAL, 0xFCB9887CL,
  56  0x62DD1DDFL, 0x15DA2D49L, 0x8CD37CF3L, 0xFBD44C65L,
  57  0x4DB26158L, 0x3AB551CEL, 0xA3BC0074L, 0xD4BB30E2L,
  58  0x4ADFA541L, 0x3DD895D7L, 0xA4D1C46DL, 0xD3D6F4FBL,
  59  0x4369E96AL, 0x346ED9FCL, 0xAD678846L, 0xDA60B8D0L,
  60  0x44042D73L, 0x33031DE5L, 0xAA0A4C5FL, 0xDD0D7CC9L,
  61  0x5005713CL, 0x270241AAL, 0xBE0B1010L, 0xC90C2086L,
  62  0x5768B525L, 0x206F85B3L, 0xB966D409L, 0xCE61E49FL,
  63  0x5EDEF90EL, 0x29D9C998L, 0xB0D09822L, 0xC7D7A8B4L,
  64  0x59B33D17L, 0x2EB40D81L, 0xB7BD5C3BL, 0xC0BA6CADL,
  65  0xEDB88320L, 0x9ABFB3B6L, 0x03B6E20CL, 0x74B1D29AL,
  66  0xEAD54739L, 0x9DD277AFL, 0x04DB2615L, 0x73DC1683L,
  67  0xE3630B12L, 0x94643B84L, 0x0D6D6A3EL, 0x7A6A5AA8L,
  68  0xE40ECF0BL, 0x9309FF9DL, 0x0A00AE27L, 0x7D079EB1L,
  69  0xF00F9344L, 0x8708A3D2L, 0x1E01F268L, 0x6906C2FEL,
  70  0xF762575DL, 0x806567CBL, 0x196C3671L, 0x6E6B06E7L,
  71  0xFED41B76L, 0x89D32BE0L, 0x10DA7A5AL, 0x67DD4ACCL,
  72  0xF9B9DF6FL, 0x8EBEEFF9L, 0x17B7BE43L, 0x60B08ED5L,
  73  0xD6D6A3E8L, 0xA1D1937EL, 0x38D8C2C4L, 0x4FDFF252L,
  74  0xD1BB67F1L, 0xA6BC5767L, 0x3FB506DDL, 0x48B2364BL,
  75  0xD80D2BDAL, 0xAF0A1B4CL, 0x36034AF6L, 0x41047A60L,
  76  0xDF60EFC3L, 0xA867DF55L, 0x316E8EEFL, 0x4669BE79L,
  77  0xCB61B38CL, 0xBC66831AL, 0x256FD2A0L, 0x5268E236L,
  78  0xCC0C7795L, 0xBB0B4703L, 0x220216B9L, 0x5505262FL,
  79  0xC5BA3BBEL, 0xB2BD0B28L, 0x2BB45A92L, 0x5CB36A04L,
  80  0xC2D7FFA7L, 0xB5D0CF31L, 0x2CD99E8BL, 0x5BDEAE1DL,
  81  0x9B64C2B0L, 0xEC63F226L, 0x756AA39CL, 0x026D930AL,
  82  0x9C0906A9L, 0xEB0E363FL, 0x72076785L, 0x05005713L,
  83  0x95BF4A82L, 0xE2B87A14L, 0x7BB12BAEL, 0x0CB61B38L,
  84  0x92D28E9BL, 0xE5D5BE0DL, 0x7CDCEFB7L, 0x0BDBDF21L,
  85  0x86D3D2D4L, 0xF1D4E242L, 0x68DDB3F8L, 0x1FDA836EL,
  86  0x81BE16CDL, 0xF6B9265BL, 0x6FB077E1L, 0x18B74777L,
  87  0x88085AE6L, 0xFF0F6A70L, 0x66063BCAL, 0x11010B5CL,
  88  0x8F659EFFL, 0xF862AE69L, 0x616BFFD3L, 0x166CCF45L,
  89  0xA00AE278L, 0xD70DD2EEL, 0x4E048354L, 0x3903B3C2L,
  90  0xA7672661L, 0xD06016F7L, 0x4969474DL, 0x3E6E77DBL,
  91  0xAED16A4AL, 0xD9D65ADCL, 0x40DF0B66L, 0x37D83BF0L,
  92  0xA9BCAE53L, 0xDEBB9EC5L, 0x47B2CF7FL, 0x30B5FFE9L,
  93  0xBDBDF21CL, 0xCABAC28AL, 0x53B39330L, 0x24B4A3A6L,
  94  0xBAD03605L, 0xCDD70693L, 0x54DE5729L, 0x23D967BFL,
  95  0xB3667A2EL, 0xC4614AB8L, 0x5D681B02L, 0x2A6F2B94L,
  96  0xB40BBE37L, 0xC30C8EA1L, 0x5A05DF1BL, 0x2D02EF8DL
  97 };
  98
  99 static u32 chksum_crc32 (unsigned char *block, unsigned int length)
 100 {
 101    register u32 crc;
 102    unsigned long i;
 103
 104    crc = 0xFFFFFFFF;
 105    for (i = 0; i < length; i++)
 106    {
 107       crc = ((crc >> 8) & 0x00FFFFFF) ^ crctable[(crc ^ *block++) & 0xFF];
 108    }
 109    return (crc ^ 0xFFFFFFFF);
 110 }
 111
 112 static int iram_crcs[32] = { 0, };
 113
 114 // -----------------------------------------------------
 115
 116 #define PROGRAM(x) ((unsigned short *)svp->iram_rom)[x]
 117
 118 static u32 interp_get_pc(void)
 119 {
 120         unsigned short *pc1 = PC;
 121         int i;
 122         while (pc1[-1] != 0xfe01) pc1--;                // goto current block start
 123         for (i = 0; i < 0x5090/2; i++)
 124                 if (block_table[i] == pc1) break;
 125
 126         if (i == 0x5090/2) {
 127                 printf("block not found!\n");
 128                 exit(1);
 129         }
 130
 131         return i + (PC - pc1);
 132 }
 133
 134 static void translate_block(int pc)
 135 {
 136         int tmp, op, op1, icount = 0;
 137
 138         block_table[pc] = tcache_ptr;
 139
 140         //printf("translate %04x -> %04x\n", pc<<1, (tcache_ptr-tcache)<<1);
 141         for (;;)
 142         {
 143                 op = PROGRAM(pc++);
 144                 op1 = op >> 9;
 145                 *tcache_ptr++ = op;
 146                 icount++;
 147                 // need immediate?
 148                 if ((op1 & 0xf) == 4 || (op1 & 0xf) == 6) {
 149                         tmp = PROGRAM(pc++);
 150                         *tcache_ptr++ = tmp;    // immediate
 151                 }
 152                 if (op1 == 0x24 || op1 == 0x26 || // call, bra
 153                         ((op1 == 0 || op1 == 1 || op1 == 4 || op1 == 5 || op1 == 9 || op1 == 0x25) &&
 154                                 (op & 0xf0) == 0x60)) { // ld PC
 155                         break;
 156                 }
 157         }
 158         *tcache_ptr++ = 0xfe01; // end of block
 159         //printf("  %i inst\n", icount);
 160
 161         if (tcache_ptr - tcache > TCACHE_SIZE/2) {
 162                 printf("tcache overflow!\n");
 163                 fflush(stdout);
 164                 exit(1);
 165         }
 166
 167         // stats
 168         nblocks++;
 169         if (pc >= 0x400) printf("%i blocks, %i bytes\n", nblocks, (tcache_ptr - tcache)*2);
 170 }
 171
 172
 173
 174 // -----------------------------------------------------
 175
 176 int ssp1601_dyn_init(void)
 177 {
 178         tcache = tcache_ptr = malloc(TCACHE_SIZE);
 179         memset(tcache, 0, sizeof(TCACHE_SIZE));
 180         memset(block_table, 0, sizeof(block_table));
 181         *tcache_ptr++ = 0xfe01;
 182
 183         return 0;
 184 }
 185
 186
 187 void ssp1601_dyn_reset(ssp1601_t *ssp)
 188 {
 189         ssp1601_reset_local(ssp);
 190 }
 191
 192
 193 void ssp1601_dyn_run(int cycles)
 194 {
 195         while (cycles > 0)
 196         {
 197                 int pc_old = rPC;
 198                 if (block_table[rPC] == NULL)
 199                         translate_block(rPC);
 200
 201                 PC = block_table[rPC];
 202                 had_jump = 0;
 203
 204                 //printf("enter @ %04x, PC=%04x\n", (PC - tcache)<<1, rPC<<1);
 205                 ssp1601_run_local(0x10000);
 206                 cycles -= 0x10000 - g_cycles;
 207
 208                 if (!had_jump) {
 209                         // no jumps
 210                         rPC += (PC - block_table[pc_old]) - 1;
 211                 }
 212                 //printf("end   @ %04x, PC=%04x\n", (PC - tcache)<<1, rPC<<1);
 213
 214                 if (pc_old < 0x400) {
 215                         // flush IRAM cache
 216                         tcache_ptr = block_table[pc_old];
 217                         block_table[pc_old] = NULL;
 218                         nblocks--;
 219                 }
 220                 if (pc_old >= 0x400 && rPC < 0x400)
 221                 {
 222                         int i, crc = chksum_crc32(svp->iram_rom, 0x800);
 223                         for (i = 0; i < 32; i++)
 224                                 if (iram_crcs[i] == crc) break;
 225                         if (i == 32) {
 226                                 for (i = 0; i < 32 && iram_crcs[i]; i++);
 227                                 iram_crcs[i] = crc;
 228                                 printf("%i IRAMs\n", i+1);
 229                         }
 230                         printf("CRC %08x %08x\n", crc, iram_id);
 231                 }
 232         }
 233 //      debug_dump2file("tcache.bin", tcache, (tcache_ptr - tcache) << 1);
 234 //      exit(1);
 235 }
 236