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 "util/u_debug.h"
  32
  33
  34 static void
  35 PRINTF(
  36    struct debug_stream  *stream,
  37    const char           *fmt,
  38                         ... )
  39 {
  40    va_list  args;
  41
  42    va_start( args, fmt );
  43    debug_vprintf( fmt, args );
  44    va_end( args );
  45 }
  46
  47
  48 static const char *opcodes[0x20] = {
  49    "NOP",
  50    "ADD",
  51    "MOV",
  52    "MUL",
  53    "MAD",
  54    "DP2ADD",
  55    "DP3",
  56    "DP4",
  57    "FRC",
  58    "RCP",
  59    "RSQ",
  60    "EXP",
  61    "LOG",
  62    "CMP",
  63    "MIN",
  64    "MAX",
  65    "FLR",
  66    "MOD",
  67    "TRC",
  68    "SGE",
  69    "SLT",
  70    "TEXLD",
  71    "TEXLDP",
  72    "TEXLDB",
  73    "TEXKILL",
  74    "DCL",
  75    "0x1a",
  76    "0x1b",
  77    "0x1c",
  78    "0x1d",
  79    "0x1e",
  80    "0x1f",
  81 };
  82
  83
  84 static const int args[0x20] = {
  85    0,                           /* 0 nop */
  86    2,                           /* 1 add */
  87    1,                           /* 2 mov */
  88    2,                           /* 3 m ul */
  89    3,                           /* 4 mad */
  90    3,                           /* 5 dp2add */
  91    2,                           /* 6 dp3 */
  92    2,                           /* 7 dp4 */
  93    1,                           /* 8 frc */
  94    1,                           /* 9 rcp */
  95    1,                           /* a rsq */
  96    1,                           /* b exp */
  97    1,                           /* c log */
  98    3,                           /* d cmp */
  99    2,                           /* e min */
 100    2,                           /* f max */
 101    1,                           /* 10 flr */
 102    1,                           /* 11 mod */
 103    1,                           /* 12 trc */
 104    2,                           /* 13 sge */
 105    2,                           /* 14 slt */
 106    1,
 107    1,
 108    1,
 109    1,
 110    0,
 111    0,
 112    0,
 113    0,
 114    0,
 115    0,
 116    0,
 117 };
 118
 119
 120 static const char *regname[0x8] = {
 121    "R",
 122    "T",
 123    "CONST",
 124    "S",
 125    "OC",
 126    "OD",
 127    "U",
 128    "UNKNOWN",
 129 };
 130
 131 static void
 132 print_reg_type_nr(struct debug_stream *stream, unsigned type, unsigned nr)
 133 {
 134    switch (type) {
 135    case REG_TYPE_T:
 136       switch (nr) {
 137       case T_DIFFUSE:
 138          PRINTF(stream, "T_DIFFUSE");
 139          return;
 140       case T_SPECULAR:
 141          PRINTF(stream, "T_SPECULAR");
 142          return;
 143       case T_FOG_W:
 144          PRINTF(stream, "T_FOG_W");
 145          return;
 146       default:
 147          PRINTF(stream, "T_TEX%d", nr);
 148          return;
 149       }
 150    case REG_TYPE_OC:
 151       if (nr == 0) {
 152          PRINTF(stream, "oC");
 153          return;
 154       }
 155       break;
 156    case REG_TYPE_OD:
 157       if (nr == 0) {
 158          PRINTF(stream, "oD");
 159          return;
 160       }
 161       break;
 162    default:
 163       break;
 164    }
 165
 166    PRINTF(stream, "%s[%d]", regname[type], nr);
 167 }
 168
 169 #define REG_SWIZZLE_MASK 0x7777
 170 #define REG_NEGATE_MASK 0x8888
 171
 172 #define REG_SWIZZLE_XYZW ((SRC_X << A2_SRC2_CHANNEL_X_SHIFT) |  \
 173                       (SRC_Y << A2_SRC2_CHANNEL_Y_SHIFT) |      \
 174                       (SRC_Z << A2_SRC2_CHANNEL_Z_SHIFT) |      \
 175                       (SRC_W << A2_SRC2_CHANNEL_W_SHIFT))
 176
 177
 178 static void
 179 print_reg_neg_swizzle(struct debug_stream *stream, unsigned reg)
 180 {
 181    int i;
 182
 183    if ((reg & REG_SWIZZLE_MASK) == REG_SWIZZLE_XYZW &&
 184        (reg & REG_NEGATE_MASK) == 0)
 185       return;
 186
 187    PRINTF(stream, ".");
 188
 189    for (i = 3; i >= 0; i--) {
 190       if (reg & (1 << ((i * 4) + 3)))
 191          PRINTF(stream, "-");
 192
 193       switch ((reg >> (i * 4)) & 0x7) {
 194       case 0:
 195          PRINTF(stream, "x");
 196          break;
 197       case 1:
 198          PRINTF(stream, "y");
 199          break;
 200       case 2:
 201          PRINTF(stream, "z");
 202          break;
 203       case 3:
 204          PRINTF(stream, "w");
 205          break;
 206       case 4:
 207          PRINTF(stream, "0");
 208          break;
 209       case 5:
 210          PRINTF(stream, "1");
 211          break;
 212       default:
 213          PRINTF(stream, "?");
 214          break;
 215       }
 216    }
 217 }
 218
 219
 220 static void
 221 print_src_reg(struct debug_stream *stream, unsigned dword)
 222 {
 223    unsigned nr = (dword >> A2_SRC2_NR_SHIFT) & REG_NR_MASK;
 224    unsigned type = (dword >> A2_SRC2_TYPE_SHIFT) & REG_TYPE_MASK;
 225    print_reg_type_nr(stream, type, nr);
 226    print_reg_neg_swizzle(stream, dword);
 227 }
 228
 229
 230 static void
 231 print_dest_reg(struct debug_stream *stream, unsigned dword)
 232 {
 233    unsigned nr = (dword >> A0_DEST_NR_SHIFT) & REG_NR_MASK;
 234    unsigned type = (dword >> A0_DEST_TYPE_SHIFT) & REG_TYPE_MASK;
 235    print_reg_type_nr(stream, type, nr);
 236    if ((dword & A0_DEST_CHANNEL_ALL) == A0_DEST_CHANNEL_ALL)
 237       return;
 238    PRINTF(stream, ".");
 239    if (dword & A0_DEST_CHANNEL_X)
 240       PRINTF(stream, "x");
 241    if (dword & A0_DEST_CHANNEL_Y)
 242       PRINTF(stream, "y");
 243    if (dword & A0_DEST_CHANNEL_Z)
 244       PRINTF(stream, "z");
 245    if (dword & A0_DEST_CHANNEL_W)
 246       PRINTF(stream, "w");
 247 }
 248
 249
 250 #define GET_SRC0_REG(r0, r1) ((r0<<14)|(r1>>A1_SRC0_CHANNEL_W_SHIFT))
 251 #define GET_SRC1_REG(r0, r1) ((r0<<8)|(r1>>A2_SRC1_CHANNEL_W_SHIFT))
 252 #define GET_SRC2_REG(r)      (r)
 253
 254
 255 static void
 256 print_arith_op(struct debug_stream *stream,
 257                unsigned opcode, const unsigned * program)
 258 {
 259    if (opcode != A0_NOP) {
 260       print_dest_reg(stream, program[0]);
 261       if (program[0] & A0_DEST_SATURATE)
 262          PRINTF(stream, " = SATURATE ");
 263       else
 264          PRINTF(stream, " = ");
 265    }
 266
 267    PRINTF(stream, "%s ", opcodes[opcode]);
 268
 269    print_src_reg(stream, GET_SRC0_REG(program[0], program[1]));
 270    if (args[opcode] == 1) {
 271       PRINTF(stream, "\n");
 272       return;
 273    }
 274
 275    PRINTF(stream, ", ");
 276    print_src_reg(stream, GET_SRC1_REG(program[1], program[2]));
 277    if (args[opcode] == 2) {
 278       PRINTF(stream, "\n");
 279       return;
 280    }
 281
 282    PRINTF(stream, ", ");
 283    print_src_reg(stream, GET_SRC2_REG(program[2]));
 284    PRINTF(stream, "\n");
 285    return;
 286 }
 287
 288
 289 static void
 290 print_tex_op(struct debug_stream *stream,
 291              unsigned opcode, const unsigned * program)
 292 {
 293    print_dest_reg(stream, program[0] | A0_DEST_CHANNEL_ALL);
 294    PRINTF(stream, " = ");
 295
 296    PRINTF(stream, "%s ", opcodes[opcode]);
 297
 298    PRINTF(stream, "S[%d],", program[0] & T0_SAMPLER_NR_MASK);
 299
 300    print_reg_type_nr(stream,
 301                      (program[1] >> T1_ADDRESS_REG_TYPE_SHIFT) &
 302                      REG_TYPE_MASK,
 303                      (program[1] >> T1_ADDRESS_REG_NR_SHIFT) & REG_NR_MASK);
 304    PRINTF(stream, "\n");
 305 }
 306
 307 static void
 308 print_texkil_op(struct debug_stream *stream,
 309                 unsigned opcode, const unsigned * program)
 310 {
 311    PRINTF(stream, "TEXKIL ");
 312
 313    print_reg_type_nr(stream,
 314                      (program[1] >> T1_ADDRESS_REG_TYPE_SHIFT) &
 315                      REG_TYPE_MASK,
 316                      (program[1] >> T1_ADDRESS_REG_NR_SHIFT) & REG_NR_MASK);
 317    PRINTF(stream, "\n");
 318 }
 319
 320 static void
 321 print_dcl_op(struct debug_stream *stream,
 322              unsigned opcode, const unsigned * program)
 323 {
 324    PRINTF(stream, "%s ", opcodes[opcode]);
 325    print_dest_reg(stream,
 326                   program[0] | A0_DEST_CHANNEL_ALL);
 327    PRINTF(stream, "\n");
 328 }
 329
 330
 331 void
 332 i915_disassemble_program(struct debug_stream *stream,
 333                          const unsigned * program, unsigned sz)
 334 {
 335    unsigned i;
 336
 337    PRINTF(stream, "\t\tBEGIN\n");
 338
 339    assert((program[0] & 0x1ff) + 2 == sz);
 340
 341    program++;
 342    for (i = 1; i < sz; i += 3, program += 3) {
 343       unsigned opcode = program[0] & (0x1f << 24);
 344
 345       PRINTF(stream, "\t\t");
 346
 347       if ((int) opcode >= A0_NOP && opcode <= A0_SLT)
 348          print_arith_op(stream, opcode >> 24, program);
 349       else if (opcode >= T0_TEXLD && opcode < T0_TEXKILL)
 350          print_tex_op(stream, opcode >> 24, program);
 351       else if (opcode == T0_TEXKILL)
 352          print_texkil_op(stream, opcode >> 24, program);
 353       else if (opcode == D0_DCL)
 354          print_dcl_op(stream, opcode >> 24, program);
 355       else
 356          PRINTF(stream, "Unknown opcode 0x%x\n", opcode);
 357    }
 358
 359    PRINTF(stream, "\t\tEND\n\n");
 360 }
 361
 362