[Mesa-dev] [PATCH 4/8] i965: Implement a disassembler for Broadwell's new instruction encoding

Chris Forbes chrisf at ijw.co.nz
Wed Dec 11 12:21:39 PST 2013


Commit messages need updating to match having ported this stuff to C.

On Wed, Dec 11, 2013 at 8:25 PM, Kenneth Graunke <kenneth at whitecape.org> wrote:
> Heavily based on Keith Packard's existing brw_disasm.c code.  I've tried
> to go through most of the pieces (like SFIDs) and update the lists to
> include features added in recent generations.
>
> I had to use C++ since my new instruction representation requires it.
> Unfortunately, C++98 doesn't allow the use of C99 array initializers,
> which makes the arrays mapping values to strings harder to read.  I
> tried to compensate for this failing by adding additional comments.
>
> The disassembly can definitely be improved, but this should at least
> get INTEL_DEBUG=vs/fs working.
>
> Signed-off-by: Kenneth Graunke <kenneth at whitecape.org>
> ---
>  src/mesa/drivers/dri/i965/Makefile.sources |   1 +
>  src/mesa/drivers/dri/i965/gen8_disasm.c    | 911 +++++++++++++++++++++++++++++
>  2 files changed, 912 insertions(+)
>  create mode 100644 src/mesa/drivers/dri/i965/gen8_disasm.c
>
> diff --git a/src/mesa/drivers/dri/i965/Makefile.sources b/src/mesa/drivers/dri/i965/Makefile.sources
> index be25981..4c629cc 100644
> --- a/src/mesa/drivers/dri/i965/Makefile.sources
> +++ b/src/mesa/drivers/dri/i965/Makefile.sources
> @@ -139,5 +139,6 @@ i965_FILES = \
>         gen7_vs_state.c \
>         gen7_wm_state.c \
>         gen7_wm_surface_state.c \
> +       gen8_disasm.c \
>         gen8_instruction.c \
>          $()
> diff --git a/src/mesa/drivers/dri/i965/gen8_disasm.c b/src/mesa/drivers/dri/i965/gen8_disasm.c
> new file mode 100644
> index 0000000..c649fe7
> --- /dev/null
> +++ b/src/mesa/drivers/dri/i965/gen8_disasm.c
> @@ -0,0 +1,911 @@
> +/*
> + * Copyright © 2008 Keith Packard
> + * Copyright © 2009-2013 Intel Corporation
> + *
> + * Permission to use, copy, modify, distribute, and sell this software and its
> + * documentation for any purpose is hereby granted without fee, provided that
> + * the above copyright notice appear in all copies and that both that copyright
> + * notice and this permission notice appear in supporting documentation, and
> + * that the name of the copyright holders not be used in advertising or
> + * publicity pertaining to distribution of the software without specific,
> + * written prior permission.  The copyright holders make no representations
> + * about the suitability of this software for any purpose.  It is provided "as
> + * is" without express or implied warranty.
> + *
> + * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
> + * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
> + * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
> + * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
> + * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
> + * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
> + * OF THIS SOFTWARE.
> + */
> +
> +#include <stdio.h>
> +#include <stdlib.h>
> +#include <string.h>
> +#include <getopt.h>
> +#include <unistd.h>
> +#include <stdarg.h>
> +
> +#include "brw_context.h"
> +#include "brw_defines.h"
> +#include "gen8_instruction.h"
> +
> +static const struct opcode_desc *m_opcode = opcode_descs;
> +
> +static const char *const m_conditional_modifier[16] = {
> +   [BRW_CONDITIONAL_NONE] = "",
> +   [BRW_CONDITIONAL_Z]    = ".e",
> +   [BRW_CONDITIONAL_NZ]   = ".ne",
> +   [BRW_CONDITIONAL_G]    = ".g",
> +   [BRW_CONDITIONAL_GE]   = ".ge",
> +   [BRW_CONDITIONAL_L]    = ".l",
> +   [BRW_CONDITIONAL_LE]   = ".le",
> +   [BRW_CONDITIONAL_O]    = ".o",
> +   [BRW_CONDITIONAL_U]    = ".u",
> +};
> +
> +static const char *const m_negate[2] = { "", "-" };
> +
> +static const char *const m_abs[2] = { "", "(abs)" };
> +
> +static const char *const m_vert_stride[16] = {
> +   "0",
> +   "1",
> +   "2",
> +   "4",
> +   "8",
> +   "16",
> +   "32",
> +};
> +
> +static const char *const width[8] = {
> +   "1",
> +   "2",
> +   "4",
> +   "8",
> +   "16",
> +};
> +
> +static const char *const m_horiz_stride[4] = {
> +   "0",
> +   "1",
> +   "2",
> +   "4"
> +};
> +
> +static const char *const m_chan_sel[4] = { "x", "y", "z", "w" };
> +
> +static const char *const m_debug_ctrl[2] = { "", ".breakpoint" };
> +
> +static const char *const m_saturate[2] = { "", ".sat" };
> +
> +static const char *const m_accwr[2] = { "", "AccWrEnable" };
> +
> +static const char *const m_maskctrl[2] = { "WE_normal", "WE_all" };
> +
> +static const char *const m_exec_size[8] = {
> +   "1",
> +   "2",
> +   "4",
> +   "8",
> +   "16",
> +   "32",
> +};
> +
> +static const char *const m_pred_inv[2] = { "+", "-" };
> +
> +static const char *const m_pred_ctrl_align16[16] = {
> +   "",
> +   "",
> +   ".x",
> +   ".y",
> +   ".z",
> +   ".w",
> +   ".any4h",
> +   ".all4h",
> +};
> +
> +static const char *const m_pred_ctrl_align1[16] = {
> +   "",
> +   "",
> +   ".anyv",
> +   ".allv",
> +   ".any2h",
> +   ".all2h",
> +   ".any4h",
> +   ".all4h",
> +   ".any8h",
> +   ".all8h",
> +   ".any16h",
> +   ".all16h",
> +   ".any32h",
> +   ".all32h",
> +};
> +
> +static const char *const m_thread_ctrl[4] = {
> +   "",
> +   "atomic",
> +   "switch",
> +};
> +
> +static const char *const m_dep_clear[4] = {
> +   "",
> +   "NoDDClr",
> +};
> +
> +static const char *const m_dep_check[4] = {
> +   "",
> +   "NoDDChk",
> +};
> +
> +static const char *const m_mask_ctrl[4] = {
> +   "",
> +   "nomask",
> +};
> +
> +static const char *const m_access_mode[2] = { "align1", "align16" };
> +
> +static const char *const m_reg_type[8] = {
> +   [BRW_REGISTER_TYPE_UD] = "UD",
> +   [BRW_REGISTER_TYPE_D]  = "D",
> +   [BRW_REGISTER_TYPE_UW] = "UW",
> +   [BRW_REGISTER_TYPE_W]  = "W",
> +   [BRW_REGISTER_TYPE_UB] = "UB",
> +   [BRW_REGISTER_TYPE_B]  = "B",
> +   [BRW_REGISTER_TYPE_DF] = "DF",
> +   [BRW_REGISTER_TYPE_F]  = "F",
> +};
> +
> +static const int reg_type_size[8] = {
> +   [BRW_REGISTER_TYPE_UD] = 4,
> +   [BRW_REGISTER_TYPE_D]  = 4,
> +   [BRW_REGISTER_TYPE_UW] = 2,
> +   [BRW_REGISTER_TYPE_W]  = 2,
> +   [BRW_REGISTER_TYPE_UB] = 1,
> +   [BRW_REGISTER_TYPE_B]  = 1,
> +   [BRW_REGISTER_TYPE_DF] = 8,
> +   [BRW_REGISTER_TYPE_F]  = 4,
> +};
> +
> +static const char *const m_reg_file[4] = {
> +   [BRW_ARCHITECTURE_REGISTER_FILE] = "A",
> +   [BRW_GENERAL_REGISTER_FILE] = "g",
> +   [3] = "imm",
> +};
> +
> +static const char *const m_writemask[16] = {
> +   ".(none)",
> +   ".x",
> +   ".y",
> +   ".xy",
> +   ".z",
> +   ".xz",
> +   ".yz",
> +   ".xyz",
> +   ".w",
> +   ".xw",
> +   ".yw",
> +   ".xyw",
> +   ".zw",
> +   ".xzw",
> +   ".yzw",
> +   "",
> +};
> +
> +static const char *const m_eot[2] = { "", "EOT" };
> +
> +static const char *const m_sfid[16] = {
> +   [BRW_SFID_NULL]                     = "null",
> +   [BRW_SFID_SAMPLER]                  = "sampler",
> +   [BRW_SFID_MESSAGE_GATEWAY]          = "gateway",
> +   [GEN6_SFID_DATAPORT_SAMPLER_CACHE]  = "dp/sampler_cache",
> +   [GEN6_SFID_DATAPORT_RENDER_CACHE]   = "dp/render_cache",
> +   [BRW_SFID_URB]                      = "URB",
> +   [BRW_SFID_THREAD_SPAWNER]           = "thread_spawner",
> +   [BRW_SFID_VME]                      = "vme",
> +   [GEN6_SFID_DATAPORT_CONSTANT_CACHE] = "dp/constant_cache",
> +   [GEN7_SFID_DATAPORT_DATA_CACHE]     = "dp/data_cache",
> +   [GEN7_SFID_PI]                      = "pi",
> +   [HSW_SFID_DATAPORT_DATA_CACHE_1]    = "dp/data_cache:1",
> +   [HSW_SFID_CRE]                      = "cre",
> +};
> +
> +static const char *const m_math_function[16] = {
> +   [BRW_MATH_FUNCTION_INV]                            = "inv",
> +   [BRW_MATH_FUNCTION_LOG]                            = "log",
> +   [BRW_MATH_FUNCTION_EXP]                            = "exp",
> +   [BRW_MATH_FUNCTION_SQRT]                           = "sqrt",
> +   [BRW_MATH_FUNCTION_RSQ]                            = "rsq",
> +   [BRW_MATH_FUNCTION_SIN]                            = "sin",
> +   [BRW_MATH_FUNCTION_COS]                            = "cos",
> +   [BRW_MATH_FUNCTION_FDIV]                           = "fdiv",
> +   [BRW_MATH_FUNCTION_POW]                            = "pow",
> +   [BRW_MATH_FUNCTION_INT_DIV_QUOTIENT_AND_REMAINDER] = "intdivmod",
> +   [BRW_MATH_FUNCTION_INT_DIV_QUOTIENT]               = "intdiv",
> +   [BRW_MATH_FUNCTION_INT_DIV_REMAINDER]              = "intmod",
> +   [GEN8_MATH_FUNCTION_INVM]                          = "invm",
> +   [GEN8_MATH_FUNCTION_RSQRTM]                        = "rsqrtm",
> +};
> +
> +static const char *const m_urb_opcode[16] = {
> +   [0] = "write HWord",
> +   [1] = "write OWord",
> +   [2] = "read HWord",
> +   [3] = "read OWord",
> +   [4] = "atomic mov",
> +   [5] = "atomic inc",
> +   [6] = "atomic add",
> +   [7] = "SIMD8 write",
> +   [8] = "SIMD8 read",
> +   /* [9-15] - reserved */
> +};
> +
> +static const char *const m_urb_interleave[2] = { "", "interleaved" };
> +
> +static int column;
> +
> +static int
> +string(FILE *file, const char *string)
> +{
> +   fputs(string, file);
> +   column += strlen(string);
> +   return 0;
> +}
> +
> +static int
> +format(FILE *f, const char *format, ...)
> +{
> +   char buf[1024];
> +   va_list args;
> +   va_start(args, format);
> +
> +   vsnprintf(buf, sizeof(buf) - 1, format, args);
> +   va_end(args);
> +   string(f, buf);
> +   return 0;
> +}
> +
> +static int
> +newline(FILE *f)
> +{
> +   putc('\n', f);
> +   column = 0;
> +   return 0;
> +}
> +
> +static int
> +pad(FILE *f, int c)
> +{
> +   do
> +      string(f, " ");
> +   while (column < c);
> +   return 0;
> +}
> +
> +static int
> +control(FILE *file, const char *name, const char *const ctrl[],
> +        unsigned id, int *space)
> +{
> +   if (!ctrl[id]) {
> +      fprintf(file, "*** invalid %s value %d ", name, id);
> +      return 1;
> +   }
> +   if (ctrl[id][0]) {
> +      if (space && *space)
> +         string(file, " ");
> +      string(file, ctrl[id]);
> +      if (space)
> +         *space = 1;
> +   }
> +   return 0;
> +}
> +
> +static int
> +print_opcode(FILE *file, int id)
> +{
> +   if (!m_opcode[id].name) {
> +      format(file, "*** invalid opcode value %d ", id);
> +      return 1;
> +   }
> +   string(file, m_opcode[id].name);
> +   return 0;
> +}
> +
> +static int
> +three_source_type_to_reg_type(int three_source_type)
> +{
> +   switch (three_source_type) {
> +   case BRW_3SRC_TYPE_F:
> +      return BRW_REGISTER_TYPE_F;
> +   case BRW_3SRC_TYPE_D:
> +      return BRW_REGISTER_TYPE_D;
> +   case BRW_3SRC_TYPE_UD:
> +      return BRW_REGISTER_TYPE_UD;
> +   }
> +   return -1;
> +}
> +
> +static int
> +reg(FILE *file, unsigned reg_file, unsigned _reg_nr)
> +{
> +   int err = 0;
> +
> +   if (reg_file == BRW_ARCHITECTURE_REGISTER_FILE) {
> +      switch (_reg_nr & 0xf0) {
> +      case BRW_ARF_NULL:
> +         string(file, "null");
> +         return -1;
> +      case BRW_ARF_ADDRESS:
> +         format(file, "a%d", _reg_nr & 0x0f);
> +         break;
> +      case BRW_ARF_ACCUMULATOR:
> +         format(file, "acc%d", _reg_nr & 0x0f);
> +         break;
> +      case BRW_ARF_FLAG:
> +         format(file, "f%d", _reg_nr & 0x0f);
> +         break;
> +      case BRW_ARF_MASK:
> +         format(file, "mask%d", _reg_nr & 0x0f);
> +         break;
> +      case BRW_ARF_MASK_STACK:
> +         format(file, "msd%d", _reg_nr & 0x0f);
> +         break;
> +      case BRW_ARF_STATE:
> +         format(file, "sr%d", _reg_nr & 0x0f);
> +         break;
> +      case BRW_ARF_CONTROL:
> +         format(file, "cr%d", _reg_nr & 0x0f);
> +         break;
> +      case BRW_ARF_NOTIFICATION_COUNT:
> +         format(file, "n%d", _reg_nr & 0x0f);
> +         break;
> +      case BRW_ARF_IP:
> +         string(file, "ip");
> +         return -1;
> +         break;
> +      default:
> +         format(file, "ARF%d", _reg_nr);
> +         break;
> +      }
> +   } else {
> +      err |= control(file, "src reg file", m_reg_file, reg_file, NULL);
> +      format(file, "%d", _reg_nr);
> +   }
> +   return err;
> +}
> +
> +static int
> +dest(FILE *file, struct gen8_instruction *inst)
> +{
> +   int err = 0;
> +
> +   if (gen8_access_mode(inst) == BRW_ALIGN_1) {
> +      assert(gen8_dst_address_mode(inst) == BRW_ADDRESS_DIRECT);
> +      err |= reg(file, gen8_dst_reg_file(inst), gen8_dst_da_reg_nr(inst));
> +      if (err == -1)
> +         return 0;
> +      if (gen8_dst_da1_subreg_nr(inst))
> +         format(file, ".%d", gen8_dst_da1_subreg_nr(inst) /
> +                reg_type_size[gen8_dst_reg_type(inst)]);
> +      string(file, "<");
> +      err |= control(file, "horiz stride", m_horiz_stride, gen8_dst_da1_hstride(inst), NULL);
> +      string(file, ">");
> +      err |= control(file, "dest reg encoding", m_reg_type, gen8_dst_reg_type(inst), NULL);
> +   } else {
> +      assert(gen8_dst_address_mode(inst) == BRW_ADDRESS_DIRECT);
> +      err |= reg(file, gen8_dst_reg_file(inst), gen8_dst_da_reg_nr(inst));
> +      if (err == -1)
> +         return 0;
> +      if (gen8_dst_da16_subreg_nr(inst))
> +         format(file, ".%d", gen8_dst_da16_subreg_nr(inst) /
> +                reg_type_size[gen8_dst_reg_type(inst)]);
> +      string(file, "<1>");
> +      err |= control(file, "writemask", m_writemask, gen8_da16_writemask(inst), NULL);
> +      err |= control(file, "dest reg encoding", m_reg_type, gen8_dst_reg_type(inst), NULL);
> +   }
> +
> +   return 0;
> +}
> +
> +static int
> +dest_3src(FILE *file, struct gen8_instruction *inst)
> +{
> +   int      err = 0;
> +
> +   err |= reg(file, BRW_GENERAL_REGISTER_FILE, gen8_dst_3src_reg_nr(inst));
> +   if (err == -1)
> +      return 0;
> +   if (gen8_dst_3src_subreg_nr(inst))
> +      format(file, ".%d", gen8_dst_3src_subreg_nr(inst));
> +   string(file, "<1>");
> +   err |= control(file, "writemask", m_writemask, gen8_dst_3src_writemask(inst),
> +                  NULL);
> +   err |= control(file, "dest reg encoding", m_reg_type,
> +                  three_source_type_to_reg_type(gen8_dst_3src_type(inst)), NULL);
> +
> +   return 0;
> +}
> +
> +static int
> +src_align1_region(FILE *file, unsigned vert_stride, unsigned _width,
> +                  unsigned horiz_stride)
> +{
> +   int err = 0;
> +   string(file, "<");
> +   err |= control(file, "vert stride", m_vert_stride, vert_stride, NULL);
> +   string(file, ",");
> +   err |= control(file, "width", width, _width, NULL);
> +   string(file, ",");
> +   err |= control(file, "horiz_stride", m_horiz_stride, horiz_stride, NULL);
> +   string(file, ">");
> +   return err;
> +}
> +
> +static int
> +src_swizzle(FILE *file, unsigned x, unsigned y, unsigned z, unsigned w)
> +{
> +   int err = 0;
> +
> +   /* Three kinds of swizzle display:
> +    * - identity - nothing printed
> +    * - 1->all   - print the single channel
> +    * - 1->1     - print the mapping
> +    */
> +   if (x == BRW_CHANNEL_X &&
> +       y == BRW_CHANNEL_Y &&
> +       z == BRW_CHANNEL_Z &&
> +       w == BRW_CHANNEL_W) {
> +      ; /* Print nothing */
> +   } else if (x == y && x == z && x == w) {
> +      string(file, ".");
> +      err |= control(file, "channel select", m_chan_sel, x, NULL);
> +   } else {
> +      string(file, ".");
> +      err |= control(file, "channel select", m_chan_sel, x, NULL);
> +      err |= control(file, "channel select", m_chan_sel, y, NULL);
> +      err |= control(file, "channel select", m_chan_sel, z, NULL);
> +      err |= control(file, "channel select", m_chan_sel, w, NULL);
> +   }
> +   return err;
> +}
> +
> +static int
> +src_da1(FILE *file, unsigned type, unsigned reg_file,
> +        unsigned vert_stride, unsigned _width, unsigned horiz_stride,
> +        unsigned reg_num, unsigned sub_reg_num, unsigned _abs, unsigned negate)
> +{
> +   int err = 0;
> +   err |= control(file, "negate", m_negate, negate, NULL);
> +   err |= control(file, "abs", m_abs, _abs, NULL);
> +
> +   err |= reg(file, reg_file, reg_num);
> +   if (err == -1)
> +      return 0;
> +   if (sub_reg_num)
> +      format(file, ".%d", sub_reg_num / reg_type_size[type]); /* use formal style like spec */
> +   src_align1_region(file, vert_stride, _width, horiz_stride);
> +   err |= control(file, "src reg encoding", m_reg_type, type, NULL);
> +   return err;
> +}
> +
> +static int
> +src_da16(FILE *file,
> +         unsigned _reg_type,
> +         unsigned reg_file,
> +         unsigned vert_stride,
> +         unsigned _reg_nr,
> +         unsigned _subreg_nr,
> +         unsigned _abs,
> +         unsigned negate,
> +         unsigned swz_x,
> +         unsigned swz_y,
> +         unsigned swz_z,
> +         unsigned swz_w)
> +{
> +   int err = 0;
> +   err |= control(file, "negate", m_negate, negate, NULL);
> +   err |= control(file, "abs", m_abs, _abs, NULL);
> +
> +   err |= reg(file, reg_file, _reg_nr);
> +   if (err == -1)
> +      return 0;
> +   if (_subreg_nr)
> +      /* bit4 for subreg number byte addressing. Make this same meaning as
> +       * in da1 case, so output looks consistent.
> +       */
> +      format(file, ".%d", 16 / reg_type_size[_reg_type]);
> +   string(file, "<");
> +   err |= control(file, "vert stride", m_vert_stride, vert_stride, NULL);
> +   string(file, ",4,1>");
> +   /*
> +    * Three kinds of swizzle display:
> +    *  identity - nothing printed
> +    *  1->all       - print the single channel
> +    *  1->1    - print the mapping
> +    */
> +   if (swz_x == BRW_CHANNEL_X &&
> +      swz_y == BRW_CHANNEL_Y &&
> +      swz_z == BRW_CHANNEL_Z &&
> +      swz_w == BRW_CHANNEL_W) {
> +      ; /* Print nothing */
> +   } else if (swz_x == swz_y && swz_x == swz_z && swz_x == swz_w) {
> +      string(file, ".");
> +      err |= control(file, "channel select", m_chan_sel, swz_x, NULL);
> +   } else {
> +      string(file, ".");
> +      err |= control(file, "channel select", m_chan_sel, swz_x, NULL);
> +      err |= control(file, "channel select", m_chan_sel, swz_y, NULL);
> +      err |= control(file, "channel select", m_chan_sel, swz_z, NULL);
> +      err |= control(file, "channel select", m_chan_sel, swz_w, NULL);
> +   }
> +   err |= control(file, "src da16 reg type", m_reg_type, _reg_type, NULL);
> +   return err;
> +}
> +
> +static int
> +src0_3src(FILE *file, struct gen8_instruction *inst)
> +{
> +   int err = 0;
> +   unsigned swiz = gen8_src0_3src_swizzle(inst);
> +   unsigned swz_x = (swiz >> 0) & 0x3;
> +   unsigned swz_y = (swiz >> 2) & 0x3;
> +   unsigned swz_z = (swiz >> 4) & 0x3;
> +   unsigned swz_w = (swiz >> 6) & 0x3;
> +
> +   err |= control(file, "negate", m_negate, gen8_src0_3src_negate(inst), NULL);
> +   err |= control(file, "abs", m_abs, gen8_src0_3src_abs(inst), NULL);
> +
> +   err |= reg(file, BRW_GENERAL_REGISTER_FILE, gen8_src0_3src_reg_nr(inst));
> +   if (err == -1)
> +      return 0;
> +   if (gen8_src0_3src_subreg_nr(inst))
> +      format(file, ".%d", gen8_src0_3src_subreg_nr(inst));
> +   string(file, "<4,1,1>");
> +   err |= control(file, "src da16 reg type", m_reg_type,
> +                  three_source_type_to_reg_type(gen8_src_3src_type(inst)), NULL);
> +   err |= src_swizzle(file, swz_x, swz_y, swz_z, swz_w);
> +   return err;
> +}
> +
> +static int
> +src1_3src(FILE *file, struct gen8_instruction *inst)
> +{
> +   int err = 0;
> +   unsigned swiz = gen8_src1_3src_swizzle(inst);
> +   unsigned swz_x = (swiz >> 0) & 0x3;
> +   unsigned swz_y = (swiz >> 2) & 0x3;
> +   unsigned swz_z = (swiz >> 4) & 0x3;
> +   unsigned swz_w = (swiz >> 6) & 0x3;
> +   unsigned src1_subreg_nr = gen8_src1_3src_subreg_nr(inst);
> +
> +   err |= control(file, "negate", m_negate, gen8_src1_3src_negate(inst), NULL);
> +   err |= control(file, "abs", m_abs, gen8_src1_3src_abs(inst), NULL);
> +
> +   err |= reg(file, BRW_GENERAL_REGISTER_FILE, gen8_src1_3src_reg_nr(inst));
> +   if (err == -1)
> +      return 0;
> +   if (src1_subreg_nr)
> +      format(file, ".%d", src1_subreg_nr);
> +   string(file, "<4,1,1>");
> +   err |= control(file, "src da16 reg type", m_reg_type,
> +                  three_source_type_to_reg_type(gen8_src_3src_type(inst)), NULL);
> +   err |= src_swizzle(file, swz_x, swz_y, swz_z, swz_w);
> +   return err;
> +}
> +
> +static int
> +src2_3src(FILE *file, struct gen8_instruction *inst)
> +{
> +   int err = 0;
> +   unsigned swiz = gen8_src2_3src_swizzle(inst);
> +   unsigned swz_x = (swiz >> 0) & 0x3;
> +   unsigned swz_y = (swiz >> 2) & 0x3;
> +   unsigned swz_z = (swiz >> 4) & 0x3;
> +   unsigned swz_w = (swiz >> 6) & 0x3;
> +
> +   err |= control(file, "negate", m_negate, gen8_src2_3src_negate(inst), NULL);
> +   err |= control(file, "abs", m_abs, gen8_src2_3src_abs(inst), NULL);
> +
> +   err |= reg(file, BRW_GENERAL_REGISTER_FILE, gen8_src2_3src_reg_nr(inst));
> +   if (err == -1)
> +      return 0;
> +   if (gen8_src2_3src_subreg_nr(inst))
> +      format(file, ".%d", gen8_src2_3src_subreg_nr(inst));
> +   string(file, "<4,1,1>");
> +   err |= control(file, "src da16 reg type", m_reg_type,
> +                  three_source_type_to_reg_type(gen8_src_3src_type(inst)), NULL);
> +   err |= src_swizzle(file, swz_x, swz_y, swz_z, swz_w);
> +   return err;
> +}
> +
> +static int
> +imm(FILE *file, unsigned type, struct gen8_instruction *inst)
> +{
> +   switch (type) {
> +   case BRW_REGISTER_TYPE_UD:
> +      format(file, "0x%08xUD", gen8_src1_imm_ud(inst));
> +      break;
> +   case BRW_REGISTER_TYPE_D:
> +      format(file, "%dD", (int) gen8_src1_imm_d(inst));
> +      break;
> +   case BRW_REGISTER_TYPE_UW:
> +      format(file, "0x%04xUW", (uint16_t) gen8_src1_imm_ud(inst));
> +      break;
> +   case BRW_REGISTER_TYPE_W:
> +      format(file, "%dW", (int16_t) gen8_src1_imm_d(inst));
> +      break;
> +   case BRW_REGISTER_TYPE_UB:
> +      format(file, "0x%02xUB", (int8_t) gen8_src1_imm_ud(inst));
> +      break;
> +   case BRW_REGISTER_TYPE_VF:
> +      format(file, "Vector Float");
> +      break;
> +   case BRW_REGISTER_TYPE_V:
> +      format(file, "0x%08xV", gen8_src1_imm_ud(inst));
> +      break;
> +   case BRW_REGISTER_TYPE_F:
> +      format(file, "%-gF", gen8_src1_imm_f(inst));
> +   }
> +   return 0;
> +}
> +
> +static int
> +src0(FILE *file, struct gen8_instruction *inst)
> +{
> +   if (gen8_src0_reg_file(inst) == BRW_IMMEDIATE_VALUE)
> +      return imm(file, gen8_src0_reg_type(inst), inst);
> +
> +   if (gen8_access_mode(inst) == BRW_ALIGN_1) {
> +      assert(gen8_src0_address_mode(inst) == BRW_ADDRESS_DIRECT);
> +      return src_da1(file,
> +                     gen8_src0_reg_type(inst),
> +                     gen8_src0_reg_file(inst),
> +                     gen8_src0_vert_stride(inst),
> +                     gen8_src0_da1_width(inst),
> +                     gen8_src0_da1_hstride(inst),
> +                     gen8_src0_da_reg_nr(inst),
> +                     gen8_src0_da1_subreg_nr(inst),
> +                     gen8_src0_abs(inst),
> +                     gen8_src0_negate(inst));
> +   } else {
> +      assert(gen8_src0_address_mode(inst) == BRW_ADDRESS_DIRECT);
> +      return src_da16(file,
> +                      gen8_src0_reg_type(inst),
> +                      gen8_src0_reg_file(inst),
> +                      gen8_src0_vert_stride(inst),
> +                      gen8_src0_da_reg_nr(inst),
> +                      gen8_src0_da16_subreg_nr(inst),
> +                      gen8_src0_abs(inst),
> +                      gen8_src0_negate(inst),
> +                      gen8_src0_da16_swiz_x(inst),
> +                      gen8_src0_da16_swiz_y(inst),
> +                      gen8_src0_da16_swiz_z(inst),
> +                      gen8_src0_da16_swiz_w(inst));
> +   }
> +}
> +
> +static int
> +src1(FILE *file, struct gen8_instruction *inst)
> +{
> +   if (gen8_src1_reg_file(inst) == BRW_IMMEDIATE_VALUE)
> +      return imm(file, gen8_src1_reg_type(inst), inst);
> +
> +   if (gen8_access_mode(inst) == BRW_ALIGN_1) {
> +      assert(gen8_src1_address_mode(inst) == BRW_ADDRESS_DIRECT);
> +      return src_da1(file,
> +                     gen8_src1_reg_type(inst),
> +                     gen8_src1_reg_file(inst),
> +                     gen8_src1_vert_stride(inst),
> +                     gen8_src1_da1_width(inst),
> +                     gen8_src1_da1_hstride(inst),
> +                     gen8_src1_da_reg_nr(inst),
> +                     gen8_src1_da1_subreg_nr(inst),
> +                     gen8_src1_abs(inst),
> +                     gen8_src1_negate(inst));
> +   } else {
> +      assert(gen8_src1_address_mode(inst) == BRW_ADDRESS_DIRECT);
> +      return src_da16(file,
> +                      gen8_src1_reg_type(inst),
> +                      gen8_src1_reg_file(inst),
> +                      gen8_src1_vert_stride(inst),
> +                      gen8_src1_da_reg_nr(inst),
> +                      gen8_src1_da16_subreg_nr(inst),
> +                      gen8_src1_abs(inst),
> +                      gen8_src1_negate(inst),
> +                      gen8_src1_da16_swiz_x(inst),
> +                      gen8_src1_da16_swiz_y(inst),
> +                      gen8_src1_da16_swiz_z(inst),
> +                      gen8_src1_da16_swiz_w(inst));
> +   }
> +}
> +
> +static int esize[6] = { 1, 2, 4, 8, 16, 32 };
> +
> +static int
> +qtr_ctrl(FILE *file, struct gen8_instruction *inst)
> +{
> +   int qtr_ctl = gen8_qtr_control(inst);
> +   int exec_size = esize[gen8_exec_size(inst)];
> +
> +   if (exec_size == 8) {
> +      switch (qtr_ctl) {
> +      case 0:
> +         string(file, " 1Q");
> +         break;
> +      case 1:
> +         string(file, " 2Q");
> +         break;
> +      case 2:
> +         string(file, " 3Q");
> +         break;
> +      case 3:
> +         string(file, " 4Q");
> +         break;
> +      }
> +   } else if (exec_size == 16) {
> +      if (qtr_ctl < 2)
> +         string(file, " 1H");
> +      else
> +         string(file, " 2H");
> +   }
> +   return 0;
> +}
> +
> +int
> +gen8_disassemble(FILE *file, struct gen8_instruction *inst, int gen)
> +{
> +   int err = 0;
> +   int space = 0;
> +
> +   const int opcode = gen8_opcode(inst);
> +
> +   if (gen8_pred_control(inst)) {
> +      string(file, "(");
> +      err |= control(file, "predicate inverse", m_pred_inv, gen8_pred_inv(inst), NULL);
> +      format(file, "f%d", gen8_flag_reg_nr(inst));
> +      if (gen8_flag_subreg_nr(inst))
> +         format(file, ".%d", gen8_flag_subreg_nr(inst));
> +      if (gen8_access_mode(inst) == BRW_ALIGN_1) {
> +         err |= control(file, "predicate control align1", m_pred_ctrl_align1,
> +                        gen8_pred_control(inst), NULL);
> +      } else {
> +         err |= control(file, "predicate control align16", m_pred_ctrl_align16,
> +                        gen8_pred_control(inst), NULL);
> +      }
> +      string(file, ") ");
> +   }
> +
> +   err |= print_opcode(file, opcode);
> +   err |= control(file, "saturate", m_saturate, gen8_saturate(inst), NULL);
> +   err |= control(file, "debug control", m_debug_ctrl, gen8_debug_control(inst), NULL);
> +
> +   if (opcode == BRW_OPCODE_MATH) {
> +      string(file, " ");
> +      err |= control(file, "function", m_math_function, gen8_math_function(inst),
> +                     NULL);
> +   } else if (opcode != BRW_OPCODE_SEND && opcode != BRW_OPCODE_SENDC) {
> +      err |= control(file, "conditional modifier", m_conditional_modifier,
> +                     gen8_cond_modifier(inst), NULL);
> +
> +      /* If we're using the conditional modifier, print the flag reg used. */
> +      if (gen8_cond_modifier(inst) && opcode != BRW_OPCODE_SEL) {
> +         format(file, ".f%d", gen8_flag_reg_nr(inst));
> +         if (gen8_flag_subreg_nr(inst))
> +            format(file, ".%d", gen8_flag_subreg_nr(inst));
> +      }
> +   }
> +
> +   if (opcode != BRW_OPCODE_NOP) {
> +      string(file, "(");
> +      err |= control(file, "execution size", m_exec_size, gen8_exec_size(inst), NULL);
> +      string(file, ")");
> +   }
> +
> +   if (m_opcode[opcode].nsrc == 3) {
> +      pad(file, 16);
> +      err |= dest_3src(file, inst);
> +
> +      pad(file, 32);
> +      err |= src0_3src(file, inst);
> +
> +      pad(file, 48);
> +      err |= src1_3src(file, inst);
> +
> +      pad(file, 64);
> +      err |= src2_3src(file, inst);
> +   } else {
> +      if (m_opcode[opcode].ndst > 0) {
> +         pad(file, 16);
> +         err |= dest(file, inst);
> +      } else if (opcode == BRW_OPCODE_ENDIF) {
> +         format(file, " %d", gen8_jip(inst));
> +      } else if (opcode == BRW_OPCODE_IF ||
> +                 opcode == BRW_OPCODE_ELSE ||
> +                 opcode == BRW_OPCODE_WHILE ||
> +                 opcode == BRW_OPCODE_BREAK ||
> +                 opcode == BRW_OPCODE_CONTINUE ||
> +                 opcode == BRW_OPCODE_HALT) {
> +         format(file, " %d %d", gen8_jip(inst), gen8_uip(inst));
> +      }
> +
> +      if (m_opcode[opcode].nsrc > 0) {
> +         pad(file, 32);
> +         err |= src0(file, inst);
> +      }
> +      if (m_opcode[opcode].nsrc > 1) {
> +         pad(file, 48);
> +         err |= src1(file, inst);
> +      }
> +   }
> +
> +   if (opcode == BRW_OPCODE_SEND || opcode == BRW_OPCODE_SENDC) {
> +      const int sfid = gen8_sfid(inst);
> +
> +      newline(file);
> +      pad(file, 16);
> +      space = 0;
> +
> +      err |= control(file, "SFID", m_sfid, sfid, &space);
> +
> +      switch (sfid) {
> +      case BRW_SFID_SAMPLER:
> +         format(file, " (%d, %d, %d, %d)",
> +                gen8_binding_table_index(inst),
> +                gen8_sampler(inst),
> +                gen8_sampler_msg_type(inst),
> +                gen8_sampler_simd_mode(inst));
> +         break;
> +
> +      case BRW_SFID_URB:
> +         space = 1;
> +         err |= control(file, "urb opcode", m_urb_opcode,
> +                        gen8_urb_opcode(inst), &space);
> +         err |= control(file, "urb interleave", m_urb_interleave,
> +                        gen8_urb_interleave(inst), &space);
> +         format(file, " %d %d",
> +                gen8_urb_global_offset(inst), gen8_urb_per_slot_offset(inst));
> +         break;
> +
> +      case GEN6_SFID_DATAPORT_SAMPLER_CACHE:
> +      case GEN6_SFID_DATAPORT_RENDER_CACHE:
> +      case GEN6_SFID_DATAPORT_CONSTANT_CACHE:
> +      case GEN7_SFID_DATAPORT_DATA_CACHE:
> +         format(file, " (%d, 0x%x)",
> +               gen8_binding_table_index(inst),
> +               gen8_function_control(inst));
> +         break;
> +
> +      default:
> +         format(file, "unsupported shared function ID (%d)", sfid);
> +         break;
> +      }
> +      if (space)
> +         string(file, " ");
> +      format(file, "mlen %d", gen8_mlen(inst));
> +      format(file, " rlen %d", gen8_rlen(inst));
> +   }
> +   pad(file, 64);
> +   if (opcode != BRW_OPCODE_NOP) {
> +      string(file, "{");
> +      space = 1;
> +      err |= control(file, "access mode", m_access_mode, gen8_access_mode(inst), &space);
> +      err |= control(file, "mask control", m_maskctrl, gen8_mask_control(inst), &space);
> +      err |= control(file, "DDClr", m_dep_clear, gen8_no_dd_clear(inst), &space);
> +      err |= control(file, "DDChk", m_dep_check, gen8_no_dd_check(inst), &space);
> +
> +      err |= qtr_ctrl(file, inst);
> +
> +      err |= control(file, "thread control", m_thread_ctrl, gen8_thread_control(inst), &space);
> +      err |= control(file, "acc write control", m_accwr, gen8_acc_wr_control(inst), &space);
> +      if (opcode == BRW_OPCODE_SEND || opcode == BRW_OPCODE_SENDC)
> +         err |= control(file, "end of thread", m_eot, gen8_eot(inst), &space);
> +      if (space)
> +         string(file, " ");
> +      string(file, "}");
> +   }
> +   string(file, ";");
> +   newline(file);
> +   return err;
> +}
> --
> 1.8.4.4
>
> _______________________________________________
> mesa-dev mailing list
> mesa-dev at lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/mesa-dev


More information about the mesa-dev mailing list