src/intel/tools/disasm.c

   1 /*
   2  * Copyright © 2014 Intel Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21  * IN THE SOFTWARE.
  22  */
  23
  24 #include <stdlib.h>
  25
  26 #include "brw_context.h"
  27 #include "brw_inst.h"
  28 #include "brw_eu.h"
  29
  30 #include "gen_disasm.h"
  31
  32 uint64_t INTEL_DEBUG;
  33
  34 struct gen_disasm {
  35     struct brw_device_info devinfo;
  36 };
  37
  38 void
  39 gen_disasm_disassemble(struct gen_disasm *disasm, void *assembly, int start, int end, FILE *out)
  40 {
  41    struct brw_device_info *devinfo = &disasm->devinfo;
  42    bool dump_hex = false;
  43
  44    for (int offset = start; offset < end;) {
  45       brw_inst *insn = assembly + offset;
  46       brw_inst uncompacted;
  47       bool compacted = brw_inst_cmpt_control(devinfo, insn);
  48       if (0)
  49          fprintf(out, "0x%08x: ", offset);
  50
  51       if (compacted) {
  52          brw_compact_inst *compacted = (void *)insn;
  53          if (dump_hex) {
  54             fprintf(out, "0x%08x 0x%08x                       ",
  55                    ((uint32_t *)insn)[1],
  56                    ((uint32_t *)insn)[0]);
  57          }
  58
  59          brw_uncompact_instruction(devinfo, &uncompacted, compacted);
  60          insn = &uncompacted;
  61          offset += 8;
  62       } else {
  63          if (dump_hex) {
  64             fprintf(out, "0x%08x 0x%08x 0x%08x 0x%08x ",
  65                    ((uint32_t *)insn)[3],
  66                    ((uint32_t *)insn)[2],
  67                    ((uint32_t *)insn)[1],
  68                    ((uint32_t *)insn)[0]);
  69          }
  70          offset += 16;
  71       }
  72
  73       brw_disassemble_inst(out, devinfo, insn, compacted);
  74
  75       /* Simplistic, but efficient way to terminate disasm */
  76       if (brw_inst_opcode(devinfo, insn) == BRW_OPCODE_SEND ||
  77          brw_inst_opcode(devinfo, insn) == BRW_OPCODE_SENDC)
  78          if (brw_inst_eot(devinfo, insn))
  79             break;
  80          if (brw_inst_opcode(devinfo, insn) == 0)
  81             break;
  82
  83    }
  84 }
  85
  86 struct gen_disasm *
  87 gen_disasm_create(int pciid)
  88 {
  89    struct gen_disasm *gd;
  90    const struct brw_device_info *dev_info = NULL;
  91
  92    gd = malloc(sizeof *gd);
  93    if (gd == NULL)
  94       return NULL;
  95
  96    dev_info = brw_get_device_info(pciid);
  97
  98    gd->devinfo.gen = dev_info->gen;
  99    gd->devinfo.is_cherryview = dev_info->is_cherryview;
 100    gd->devinfo.is_g4x = dev_info->is_g4x;
 101
 102    brw_init_compaction_tables(&gd->devinfo);
 103
 104    return gd;
 105 }
 106
 107 void
 108 gen_disasm_destroy(struct gen_disasm *disasm)
 109 {
 110    free(disasm);
 111 }