src/gallium/drivers/i915/i915_debug_fp.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28
  29 #include "i915_reg.h"
  30 #include "i915_debug.h"
  31 #include "pipe/internal/p_winsys_screen.h"
  32 #include "util/u_memory.h"
  33
  34
  35 static void
  36 PRINTF(
  37    struct debug_stream  *stream,
  38    const char           *fmt,
  39                         ... )
  40 {
  41    va_list  args;
  42
  43    va_start( args, fmt );
  44    debug_vprintf( fmt, args );
  45    va_end( args );
  46 }
  47
  48
  49 static const char *opcodes[0x20] = {
  50    "NOP",
  51    "ADD",
  52    "MOV",
  53    "MUL",
  54    "MAD",
  55    "DP2ADD",
  56    "DP3",
  57    "DP4",
  58    "FRC",
  59    "RCP",
  60    "RSQ",
  61    "EXP",
  62    "LOG",
  63    "CMP",
  64    "MIN",
  65    "MAX",
  66    "FLR",
  67    "MOD",
  68    "TRC",
  69    "SGE",
  70    "SLT",
  71    "TEXLD",
  72    "TEXLDP",
  73    "TEXLDB",
  74    "TEXKILL",
  75    "DCL",
  76    "0x1a",
  77    "0x1b",
  78    "0x1c",
  79    "0x1d",
  80    "0x1e",
  81    "0x1f",
  82 };
  83
  84
  85 static const int args[0x20] = {
  86    0,                           /* 0 nop */
  87    2,                           /* 1 add */
  88    1,                           /* 2 mov */
  89    2,                           /* 3 m ul */
  90    3,                           /* 4 mad */
  91    3,                           /* 5 dp2add */
  92    2,                           /* 6 dp3 */
  93    2,                           /* 7 dp4 */
  94    1,                           /* 8 frc */
  95    1,                           /* 9 rcp */
  96    1,                           /* a rsq */
  97    1,                           /* b exp */
  98    1,                           /* c log */
  99    3,                           /* d cmp */
 100    2,                           /* e min */
 101    2,                           /* f max */
 102    1,                           /* 10 flr */
 103    1,                           /* 11 mod */
 104    1,                           /* 12 trc */
 105    2,                           /* 13 sge */
 106    2,                           /* 14 slt */
 107    1,
 108    1,
 109    1,
 110    1,
 111    0,
 112    0,
 113    0,
 114    0,
 115    0,
 116    0,
 117    0,
 118 };
 119
 120
 121 static const char *regname[0x8] = {
 122    "R",
 123    "T",
 124    "CONST",
 125    "S",
 126    "OC",
 127    "OD",
 128    "U",
 129    "UNKNOWN",
 130 };
 131
 132 static void
 133 print_reg_type_nr(struct debug_stream *stream, unsigned type, unsigned nr)
 134 {
 135    switch (type) {
 136    case REG_TYPE_T:
 137       switch (nr) {
 138       case T_DIFFUSE:
 139          PRINTF(stream, "T_DIFFUSE");
 140          return;
 141       case T_SPECULAR:
 142          PRINTF(stream, "T_SPECULAR");
 143          return;
 144       case T_FOG_W:
 145          PRINTF(stream, "T_FOG_W");
 146          return;
 147       default:
 148          PRINTF(stream, "T_TEX%d", nr);
 149          return;
 150       }
 151    case REG_TYPE_OC:
 152       if (nr == 0) {
 153          PRINTF(stream, "oC");
 154          return;
 155       }
 156       break;
 157    case REG_TYPE_OD:
 158       if (nr == 0) {
 159          PRINTF(stream, "oD");
 160          return;
 161       }
 162       break;
 163    default:
 164       break;
 165    }
 166
 167    PRINTF(stream, "%s[%d]", regname[type], nr);
 168 }
 169
 170 #define REG_SWIZZLE_MASK 0x7777
 171 #define REG_NEGATE_MASK 0x8888
 172
 173 #define REG_SWIZZLE_XYZW ((SRC_X << A2_SRC2_CHANNEL_X_SHIFT) |  \
 174                       (SRC_Y << A2_SRC2_CHANNEL_Y_SHIFT) |      \
 175                       (SRC_Z << A2_SRC2_CHANNEL_Z_SHIFT) |      \
 176                       (SRC_W << A2_SRC2_CHANNEL_W_SHIFT))
 177
 178
 179 static void
 180 print_reg_neg_swizzle(struct debug_stream *stream, unsigned reg)
 181 {
 182    int i;
 183
 184    if ((reg & REG_SWIZZLE_MASK) == REG_SWIZZLE_XYZW &&
 185        (reg & REG_NEGATE_MASK) == 0)
 186       return;
 187
 188    PRINTF(stream, ".");
 189
 190    for (i = 3; i >= 0; i--) {
 191       if (reg & (1 << ((i * 4) + 3)))
 192          PRINTF(stream, "-");
 193
 194       switch ((reg >> (i * 4)) & 0x7) {
 195       case 0:
 196          PRINTF(stream, "x");
 197          break;
 198       case 1:
 199          PRINTF(stream, "y");
 200          break;
 201       case 2:
 202          PRINTF(stream, "z");
 203          break;
 204       case 3:
 205          PRINTF(stream, "w");
 206          break;
 207       case 4:
 208          PRINTF(stream, "0");
 209          break;
 210       case 5:
 211          PRINTF(stream, "1");
 212          break;
 213       default:
 214          PRINTF(stream, "?");
 215          break;
 216       }
 217    }
 218 }
 219
 220
 221 static void
 222 print_src_reg(struct debug_stream *stream, unsigned dword)
 223 {
 224    unsigned nr = (dword >> A2_SRC2_NR_SHIFT) & REG_NR_MASK;
 225    unsigned type = (dword >> A2_SRC2_TYPE_SHIFT) & REG_TYPE_MASK;
 226    print_reg_type_nr(stream, type, nr);
 227    print_reg_neg_swizzle(stream, dword);
 228 }
 229
 230
 231 static void
 232 print_dest_reg(struct debug_stream *stream, unsigned dword)
 233 {
 234    unsigned nr = (dword >> A0_DEST_NR_SHIFT) & REG_NR_MASK;
 235    unsigned type = (dword >> A0_DEST_TYPE_SHIFT) & REG_TYPE_MASK;
 236    print_reg_type_nr(stream, type, nr);
 237    if ((dword & A0_DEST_CHANNEL_ALL) == A0_DEST_CHANNEL_ALL)
 238       return;
 239    PRINTF(stream, ".");
 240    if (dword & A0_DEST_CHANNEL_X)
 241       PRINTF(stream, "x");
 242    if (dword & A0_DEST_CHANNEL_Y)
 243       PRINTF(stream, "y");
 244    if (dword & A0_DEST_CHANNEL_Z)
 245       PRINTF(stream, "z");
 246    if (dword & A0_DEST_CHANNEL_W)
 247       PRINTF(stream, "w");
 248 }
 249
 250
 251 #define GET_SRC0_REG(r0, r1) ((r0<<14)|(r1>>A1_SRC0_CHANNEL_W_SHIFT))
 252 #define GET_SRC1_REG(r0, r1) ((r0<<8)|(r1>>A2_SRC1_CHANNEL_W_SHIFT))
 253 #define GET_SRC2_REG(r)      (r)
 254
 255
 256 static void
 257 print_arith_op(struct debug_stream *stream,
 258                unsigned opcode, const unsigned * program)
 259 {
 260    if (opcode != A0_NOP) {
 261       print_dest_reg(stream, program[0]);
 262       if (program[0] & A0_DEST_SATURATE)
 263          PRINTF(stream, " = SATURATE ");
 264       else
 265          PRINTF(stream, " = ");
 266    }
 267
 268    PRINTF(stream, "%s ", opcodes[opcode]);
 269
 270    print_src_reg(stream, GET_SRC0_REG(program[0], program[1]));
 271    if (args[opcode] == 1) {
 272       PRINTF(stream, "\n");
 273       return;
 274    }
 275
 276    PRINTF(stream, ", ");
 277    print_src_reg(stream, GET_SRC1_REG(program[1], program[2]));
 278    if (args[opcode] == 2) {
 279       PRINTF(stream, "\n");
 280       return;
 281    }
 282
 283    PRINTF(stream, ", ");
 284    print_src_reg(stream, GET_SRC2_REG(program[2]));
 285    PRINTF(stream, "\n");
 286    return;
 287 }
 288
 289
 290 static void
 291 print_tex_op(struct debug_stream *stream,
 292              unsigned opcode, const unsigned * program)
 293 {
 294    print_dest_reg(stream, program[0] | A0_DEST_CHANNEL_ALL);
 295    PRINTF(stream, " = ");
 296
 297    PRINTF(stream, "%s ", opcodes[opcode]);
 298
 299    PRINTF(stream, "S[%d],", program[0] & T0_SAMPLER_NR_MASK);
 300
 301    print_reg_type_nr(stream,
 302                      (program[1] >> T1_ADDRESS_REG_TYPE_SHIFT) &
 303                      REG_TYPE_MASK,
 304                      (program[1] >> T1_ADDRESS_REG_NR_SHIFT) & REG_NR_MASK);
 305    PRINTF(stream, "\n");
 306 }
 307
 308 static void
 309 print_texkil_op(struct debug_stream *stream,
 310                 unsigned opcode, const unsigned * program)
 311 {
 312    PRINTF(stream, "TEXKIL ");
 313
 314    print_reg_type_nr(stream,
 315                      (program[1] >> T1_ADDRESS_REG_TYPE_SHIFT) &
 316                      REG_TYPE_MASK,
 317                      (program[1] >> T1_ADDRESS_REG_NR_SHIFT) & REG_NR_MASK);
 318    PRINTF(stream, "\n");
 319 }
 320
 321 static void
 322 print_dcl_op(struct debug_stream *stream,
 323              unsigned opcode, const unsigned * program)
 324 {
 325    PRINTF(stream, "%s ", opcodes[opcode]);
 326    print_dest_reg(stream,
 327                   program[0] | A0_DEST_CHANNEL_ALL);
 328    PRINTF(stream, "\n");
 329 }
 330
 331
 332 void
 333 i915_disassemble_program(struct debug_stream *stream,
 334                          const unsigned * program, unsigned sz)
 335 {
 336    unsigned i;
 337
 338    PRINTF(stream, "\t\tBEGIN\n");
 339
 340    assert((program[0] & 0x1ff) + 2 == sz);
 341
 342    program++;
 343    for (i = 1; i < sz; i += 3, program += 3) {
 344       unsigned opcode = program[0] & (0x1f << 24);
 345
 346       PRINTF(stream, "\t\t");
 347
 348       if ((int) opcode >= A0_NOP && opcode <= A0_SLT)
 349          print_arith_op(stream, opcode >> 24, program);
 350       else if (opcode >= T0_TEXLD && opcode < T0_TEXKILL)
 351          print_tex_op(stream, opcode >> 24, program);
 352       else if (opcode == T0_TEXKILL)
 353          print_texkil_op(stream, opcode >> 24, program);
 354       else if (opcode == D0_DCL)
 355          print_dcl_op(stream, opcode >> 24, program);
 356       else
 357          PRINTF(stream, "Unknown opcode 0x%x\n", opcode);
 358    }
 359
 360    PRINTF(stream, "\t\tEND\n\n");
 361 }
 362
 363