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  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 "i915_debug_private.h"
  32. #include "util/u_debug.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.  
  364.