palacios/src/palacios/vmm_xed.c

   1 #include <palacios/vmm_decoder.h>
   2 #include <palacios/vmm_xed.h>
   3 #include <xed/xed-interface.h>
   4
   5
   6
   7
   8 int v3_decode(struct guest_info * info, addr_t instr_ptr, struct x86_instr * instr) {
   9
  10     xed_state_t dstate;
  11     xed_decoded_inst_t xedd;
  12     xed_uint_t i, length;
  13     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};
  14     xed_bool_t long_mode = true;
  15     unsigned int first_argv;
  16     int num;
  17
  18
  19     for (i=0, num=1; i<100; i += length, num++){
  20             xed_tables_init();
  21             xed_state_zero(&dstate);
  22             //if (argc > 2 && strcmp(argv[1], "-64") == 0)
  23             long_mode = true;
  24
  25             if (long_mode)  {
  26                 first_argv = 2;
  27                 dstate.mmode=XED_MACHINE_MODE_LONG_64;
  28             }
  29             else {
  30                 first_argv=1;
  31                 xed_state_init(&dstate,
  32                                XED_MACHINE_MODE_LEGACY_32,
  33                                XED_ADDRESS_WIDTH_32b,
  34                                XED_ADDRESS_WIDTH_32b);
  35             }
  36
  37             xed_decoded_inst_zero_set_mode(&xedd, &dstate);
  38             xed_error_enum_t xed_error = xed_decode(&xedd,
  39                                                     REINTERPRET_CAST(const xed_uint8_t*,&itext[i]),
  40                                                     XED_MAX_INSTRUCTION_BYTES);
  41             switch(xed_error)    {
  42               case XED_ERROR_NONE:
  43                 break;
  44               case XED_ERROR_BUFFER_TOO_SHORT:
  45                 PrintDebug("Not enough bytes provided\n");
  46                 return 1;
  47               case XED_ERROR_GENERAL_ERROR:
  48                 PrintDebug("Could not decode given input.\n");
  49                 return 1;
  50               default:
  51                 PrintDebug("Unhandled error code \n");
  52                 return 1;;
  53             }
  54
  55             length = xed_decoded_inst_get_length (&xedd);
  56
  57             PrintDebug("\nThe %dth instruction:", num);
  58
  59             PrintDebug("\ncategory: ");
  60             PrintDebug(" %s\n", xed_category_enum_t2str(xed_decoded_inst_get_category(&xedd)));;
  61             PrintDebug("ISA-extension:%s\n ",xed_extension_enum_t2str(xed_decoded_inst_get_extension(&xedd)));
  62             PrintDebug(" instruction-length: %d\n ", xed_decoded_inst_get_length(&xedd));
  63             PrintDebug(" operand-size:%d\n ", xed_operand_values_get_effective_operand_width(xed_decoded_inst_operands_const(&xedd)));
  64             PrintDebug("address-size:%d\n ", xed_operand_values_get_effective_address_width(xed_decoded_inst_operands_const(&xedd)));
  65             PrintDebug("iform-enum-name:%s\n ",xed_iform_enum_t2str(xed_decoded_inst_get_iform_enum(&xedd)));
  66             PrintDebug("iform-enum-name-dispatch (zero based):%d\n ", xed_decoded_inst_get_iform_enum_dispatch(&xedd));
  67             PrintDebug("iclass-max-iform-dispatch: %d\n ", xed_iform_max_per_iclass(xed_decoded_inst_get_iclass(&xedd)));
  68
  69             // operands
  70             // print_operands(&xedd);
  71
  72             // memops
  73             // print_memops(&xedd);
  74
  75             // flags
  76             //print_flags(&xedd);
  77
  78             // attributes
  79             //print_attributes(&xedd);*/
  80     }
  81
  82
  83
  84     return -1;
  85 }
  86
  87
  88 int v3_encode(struct guest_info * info, struct x86_instr * instr, char * instr_buf) {
  89
  90   return -1;
  91 }