palacios/src/palacios/vmm_decoder.c

   1 #include <palacios/vmm_decoder.h>
   2 #if VMM_XED
   3 #include <xed/xed-interface.h>
   4 #endif
   5
   6
   7 int parse() {
   8 #if !VMM_XED
   9    PrintDebug("XED is not included in this kernel\n");
  10 #else
  11     xed_state_t dstate;
  12     xed_decoded_inst_t xedd;
  13     xed_uint_t i, length;
  14     xed_uint8_t itext[100] = {0x01,0x00,0x00,0x00,0x12,0x00,0x55,0x48,0x89,0xe5,0x48,0x89,0x7d,0xf8,0x89,0x75,0xf4,0x89,0x55,0xf0,0x89,0x4d,0xec,0x48,0x8b,0x55,0xf8,0x8b,0x45,0xf4,0x89,0x02,0x48,0x8b,0x55,0xf8,0x8b,0x45,0xf0,0x89,0x42,0x04,0x48,0x8b,0x55,0xf8,0x8b,0x45,0xec,0x89,0x42,0x08,0xc9,0xc3,0x55,0x48,0x89,0xe5,0x48,0x89,0x7d,0xf8,0x48,0x8b,0x45,0xf8,0x8b,0x40,0x08,0xc9,0xc3,0x90,0x0};
  15     xed_bool_t long_mode = true;
  16     unsigned int first_argv;
  17     int num;
  18
  19
  20     for (i=0, num=1; i<100; i += length, num++){
  21             xed_tables_init();
  22             xed_state_zero(&dstate);
  23             //if (argc > 2 && strcmp(argv[1], "-64") == 0)
  24             long_mode = true;
  25
  26             if (long_mode)  {
  27                 first_argv = 2;
  28                 dstate.mmode=XED_MACHINE_MODE_LONG_64;
  29             }
  30             else {
  31                 first_argv=1;
  32                 xed_state_init(&dstate,
  33                                XED_MACHINE_MODE_LEGACY_32,
  34                                XED_ADDRESS_WIDTH_32b,
  35                                XED_ADDRESS_WIDTH_32b);
  36             }
  37
  38             xed_decoded_inst_zero_set_mode(&xedd, &dstate);
  39             xed_error_enum_t xed_error = xed_decode(&xedd,
  40                                                     REINTERPRET_CAST(const xed_uint8_t*,&itext[i]),
  41                                                     XED_MAX_INSTRUCTION_BYTES);
  42             switch(xed_error)    {
  43               case XED_ERROR_NONE:
  44                 break;
  45               case XED_ERROR_BUFFER_TOO_SHORT:
  46                 PrintDebug("Not enough bytes provided\n");
  47                 return 1;
  48               case XED_ERROR_GENERAL_ERROR:
  49                 PrintDebug("Could not decode given input.\n");
  50                 return 1;
  51               default:
  52                 PrintDebug("Unhandled error code \n");
  53                 return 1;;
  54             }
  55
  56             length = xed_decoded_inst_get_length (&xedd);
  57
  58             PrintDebug("\nThe %dth instruction:", num);
  59
  60             PrintDebug("\ncategory: ");
  61             PrintDebug(" %s\n", xed_category_enum_t2str(xed_decoded_inst_get_category(&xedd)));;
  62             PrintDebug("ISA-extension:%s\n ",xed_extension_enum_t2str(xed_decoded_inst_get_extension(&xedd)));
  63             PrintDebug(" instruction-length: %d\n ", xed_decoded_inst_get_length(&xedd));
  64             PrintDebug(" operand-size:%d\n ", xed_operand_values_get_effective_operand_width(xed_decoded_inst_operands_const(&xedd)));
  65             PrintDebug("address-size:%d\n ", xed_operand_values_get_effective_address_width(xed_decoded_inst_operands_const(&xedd)));
  66             PrintDebug("iform-enum-name:%s\n ",xed_iform_enum_t2str(xed_decoded_inst_get_iform_enum(&xedd)));
  67             PrintDebug("iform-enum-name-dispatch (zero based):%d\n ", xed_decoded_inst_get_iform_enum_dispatch(&xedd));
  68             PrintDebug("iclass-max-iform-dispatch: %d\n ", xed_iform_max_per_iclass(xed_decoded_inst_get_iclass(&xedd)));
  69
  70             // operands
  71             // print_operands(&xedd);
  72
  73             // memops
  74             // print_memops(&xedd);
  75
  76             // flags
  77             //print_flags(&xedd);
  78
  79             // attributes
  80             //print_attributes(&xedd);*/
  81     }
  82
  83 #endif
  84
  85     return 0;
  86 }