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,
  40                        int end, FILE *out)
  41 {
  42    struct brw_device_info *devinfo = &disasm->devinfo;
  43    bool dump_hex = false;
  44
  45    for (int offset = start; offset < end;) {
  46       brw_inst *insn = assembly + offset;
  47       brw_inst uncompacted;
  48       bool compacted = brw_inst_cmpt_control(devinfo, insn);
  49       if (0)
  50          fprintf(out, "0x%08x: ", offset);
  51
  52       if (compacted) {
  53          brw_compact_inst *compacted = (void *)insn;
  54          if (dump_hex) {
  55             fprintf(out, "0x%08x 0x%08x                       ",
  56                    ((uint32_t *)insn)[1],
  57                    ((uint32_t *)insn)[0]);
  58          }
  59
  60          brw_uncompact_instruction(devinfo, &uncompacted, compacted);
  61          insn = &uncompacted;
  62          offset += 8;
  63       } else {
  64          if (dump_hex) {
  65             fprintf(out, "0x%08x 0x%08x 0x%08x 0x%08x ",
  66                    ((uint32_t *)insn)[3],
  67                    ((uint32_t *)insn)[2],
  68                    ((uint32_t *)insn)[1],
  69                    ((uint32_t *)insn)[0]);
  70          }
  71          offset += 16;
  72       }
  73
  74       brw_disassemble_inst(out, devinfo, insn, compacted);
  75
  76       /* Simplistic, but efficient way to terminate disasm */
  77       if (brw_inst_opcode(devinfo, insn) == BRW_OPCODE_SEND ||
  78           brw_inst_opcode(devinfo, insn) == BRW_OPCODE_SENDC)
  79          if (brw_inst_eot(devinfo, insn))
  80             break;
  81          if (brw_inst_opcode(devinfo, insn) == 0)
  82             break;
  83
  84    }
  85 }
  86
  87 struct gen_disasm *
  88 gen_disasm_create(int pciid)
  89 {
  90    struct gen_disasm *gd;
  91    const struct brw_device_info *dev_info = NULL;
  92
  93    gd = malloc(sizeof *gd);
  94    if (gd == NULL)
  95       return NULL;
  96
  97    dev_info = brw_get_device_info(pciid);
  98
  99    gd->devinfo.gen = dev_info->gen;
 100    gd->devinfo.is_cherryview = dev_info->is_cherryview;
 101    gd->devinfo.is_g4x = dev_info->is_g4x;
 102
 103    brw_init_compaction_tables(&gd->devinfo);
 104
 105    return gd;
 106 }
 107
 108 void
 109 gen_disasm_destroy(struct gen_disasm *disasm)
 110 {
 111    free(disasm);
 112 }