src/mesa/drivers/dri/i915/i915_debug_fp.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2003 VMware, Inc.
   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 VMWARE 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 #include <stdio.h>
  29
  30 #include "i915_reg.h"
  31 #include "i915_debug.h"
  32 #include "main/imports.h"
  33
  34 static const char *opcodes[0x20] = {
  35    "NOP",
  36    "ADD",
  37    "MOV",
  38    "MUL",
  39    "MAD",
  40    "DP2ADD",
  41    "DP3",
  42    "DP4",
  43    "FRC",
  44    "RCP",
  45    "RSQ",
  46    "EXP",
  47    "LOG",
  48    "CMP",
  49    "MIN",
  50    "MAX",
  51    "FLR",
  52    "MOD",
  53    "TRC",
  54    "SGE",
  55    "SLT",
  56    "TEXLD",
  57    "TEXLDP",
  58    "TEXLDB",
  59    "TEXKILL",
  60    "DCL",
  61    "0x1a",
  62    "0x1b",
  63    "0x1c",
  64    "0x1d",
  65    "0x1e",
  66    "0x1f",
  67 };
  68
  69
  70 static const int args[0x20] = {
  71    0,                           /* 0 nop */
  72    2,                           /* 1 add */
  73    1,                           /* 2 mov */
  74    2,                           /* 3 m ul */
  75    3,                           /* 4 mad */
  76    3,                           /* 5 dp2add */
  77    2,                           /* 6 dp3 */
  78    2,                           /* 7 dp4 */
  79    1,                           /* 8 frc */
  80    1,                           /* 9 rcp */
  81    1,                           /* a rsq */
  82    1,                           /* b exp */
  83    1,                           /* c log */
  84    3,                           /* d cmp */
  85    2,                           /* e min */
  86    2,                           /* f max */
  87    1,                           /* 10 flr */
  88    1,                           /* 11 mod */
  89    1,                           /* 12 trc */
  90    2,                           /* 13 sge */
  91    2,                           /* 14 slt */
  92    1,
  93    1,
  94    1,
  95    1,
  96    0,
  97    0,
  98    0,
  99    0,
 100    0,
 101    0,
 102    0,
 103 };
 104
 105
 106 static const char *regname[0x8] = {
 107    "R",
 108    "T",
 109    "CONST",
 110    "S",
 111    "OC",
 112    "OD",
 113    "U",
 114    "UNKNOWN",
 115 };
 116
 117 static void
 118 print_reg_type_nr(GLuint type, GLuint nr)
 119 {
 120    switch (type) {
 121    case REG_TYPE_T:
 122       switch (nr) {
 123       case T_DIFFUSE:
 124          printf("T_DIFFUSE");
 125          return;
 126       case T_SPECULAR:
 127          printf("T_SPECULAR");
 128          return;
 129       case T_FOG_W:
 130          printf("T_FOG_W");
 131          return;
 132       default:
 133          printf("T_TEX%d", nr);
 134          return;
 135       }
 136    case REG_TYPE_OC:
 137       if (nr == 0) {
 138          printf("oC");
 139          return;
 140       }
 141       break;
 142    case REG_TYPE_OD:
 143       if (nr == 0) {
 144          printf("oD");
 145          return;
 146       }
 147       break;
 148    default:
 149       break;
 150    }
 151
 152    printf("%s[%d]", regname[type], nr);
 153 }
 154
 155 #define REG_SWIZZLE_MASK 0x7777
 156 #define REG_NEGATE_MASK 0x8888
 157
 158 #define REG_SWIZZLE_XYZW ((SRC_X << A2_SRC2_CHANNEL_X_SHIFT) |  \
 159                       (SRC_Y << A2_SRC2_CHANNEL_Y_SHIFT) |      \
 160                       (SRC_Z << A2_SRC2_CHANNEL_Z_SHIFT) |      \
 161                       (SRC_W << A2_SRC2_CHANNEL_W_SHIFT))
 162
 163
 164 static void
 165 print_reg_neg_swizzle(GLuint reg)
 166 {
 167    int i;
 168
 169    if ((reg & REG_SWIZZLE_MASK) == REG_SWIZZLE_XYZW &&
 170        (reg & REG_NEGATE_MASK) == 0)
 171       return;
 172
 173    printf(".");
 174
 175    for (i = 3; i >= 0; i--) {
 176       if (reg & (1 << ((i * 4) + 3)))
 177          printf("-");
 178
 179       switch ((reg >> (i * 4)) & 0x7) {
 180       case 0:
 181          printf("x");
 182          break;
 183       case 1:
 184          printf("y");
 185          break;
 186       case 2:
 187          printf("z");
 188          break;
 189       case 3:
 190          printf("w");
 191          break;
 192       case 4:
 193          printf("0");
 194          break;
 195       case 5:
 196          printf("1");
 197          break;
 198       default:
 199          printf("?");
 200          break;
 201       }
 202    }
 203 }
 204
 205
 206 static void
 207 print_src_reg(GLuint dword)
 208 {
 209    GLuint nr = (dword >> A2_SRC2_NR_SHIFT) & REG_NR_MASK;
 210    GLuint type = (dword >> A2_SRC2_TYPE_SHIFT) & REG_TYPE_MASK;
 211    print_reg_type_nr(type, nr);
 212    print_reg_neg_swizzle(dword);
 213 }
 214
 215
 216 static void
 217 print_dest_reg(GLuint dword)
 218 {
 219    GLuint nr = (dword >> A0_DEST_NR_SHIFT) & REG_NR_MASK;
 220    GLuint type = (dword >> A0_DEST_TYPE_SHIFT) & REG_TYPE_MASK;
 221    print_reg_type_nr(type, nr);
 222    if ((dword & A0_DEST_CHANNEL_ALL) == A0_DEST_CHANNEL_ALL)
 223       return;
 224    printf(".");
 225    if (dword & A0_DEST_CHANNEL_X)
 226       printf("x");
 227    if (dword & A0_DEST_CHANNEL_Y)
 228       printf("y");
 229    if (dword & A0_DEST_CHANNEL_Z)
 230       printf("z");
 231    if (dword & A0_DEST_CHANNEL_W)
 232       printf("w");
 233 }
 234
 235
 236 #define GET_SRC0_REG(r0, r1) ((r0<<14)|(r1>>A1_SRC0_CHANNEL_W_SHIFT))
 237 #define GET_SRC1_REG(r0, r1) ((r0<<8)|(r1>>A2_SRC1_CHANNEL_W_SHIFT))
 238 #define GET_SRC2_REG(r)      (r)
 239
 240
 241 static void
 242 print_arith_op(GLuint opcode, const GLuint * program)
 243 {
 244    if (opcode != A0_NOP) {
 245       print_dest_reg(program[0]);
 246       if (program[0] & A0_DEST_SATURATE)
 247          printf(" = SATURATE ");
 248       else
 249          printf(" = ");
 250    }
 251
 252    printf("%s ", opcodes[opcode]);
 253
 254    print_src_reg(GET_SRC0_REG(program[0], program[1]));
 255    if (args[opcode] == 1) {
 256       printf("\n");
 257       return;
 258    }
 259
 260    printf(", ");
 261    print_src_reg(GET_SRC1_REG(program[1], program[2]));
 262    if (args[opcode] == 2) {
 263       printf("\n");
 264       return;
 265    }
 266
 267    printf(", ");
 268    print_src_reg(GET_SRC2_REG(program[2]));
 269    printf("\n");
 270    return;
 271 }
 272
 273
 274 static void
 275 print_tex_op(GLuint opcode, const GLuint * program)
 276 {
 277    print_dest_reg(program[0] | A0_DEST_CHANNEL_ALL);
 278    printf(" = ");
 279
 280    printf("%s ", opcodes[opcode]);
 281
 282    printf("S[%d],", program[0] & T0_SAMPLER_NR_MASK);
 283
 284    print_reg_type_nr((program[1] >> T1_ADDRESS_REG_TYPE_SHIFT) &
 285                      REG_TYPE_MASK,
 286                      (program[1] >> T1_ADDRESS_REG_NR_SHIFT) & REG_NR_MASK);
 287    printf("\n");
 288 }
 289
 290 static void
 291 print_dcl_op(GLuint opcode, const GLuint * program)
 292 {
 293    printf("%s ", opcodes[opcode]);
 294    print_dest_reg(program[0] | A0_DEST_CHANNEL_ALL);
 295    printf("\n");
 296 }
 297
 298
 299 void
 300 i915_disassemble_program(const GLuint * program, GLuint sz)
 301 {
 302    GLint i;
 303
 304    printf("\t\tBEGIN\n");
 305
 306    assert((program[0] & 0x1ff) + 2 == sz);
 307
 308    program++;
 309    for (i = 1; i < sz; i += 3, program += 3) {
 310       GLuint opcode = program[0] & (0x1f << 24);
 311
 312       printf("\t\t");
 313
 314       if ((GLint) opcode >= A0_NOP && opcode <= A0_SLT)
 315          print_arith_op(opcode >> 24, program);
 316       else if (opcode >= T0_TEXLD && opcode <= T0_TEXKILL)
 317          print_tex_op(opcode >> 24, program);
 318       else if (opcode == D0_DCL)
 319          print_dcl_op(opcode >> 24, program);
 320       else
 321          printf("Unknown opcode 0x%x\n", opcode);
 322    }
 323
 324    printf("\t\tEND\n\n");
 325 }
 326
 327