formats/ctf-text/types/integer.c

   1 /*
   2  * Common Trace Format
   3  *
   4  * Integers read/write functions.
   5  *
   6  * Copyright 2010 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
   7  *
   8  * Permission is hereby granted, free of charge, to any person obtaining a copy
   9  * of this software and associated documentation files (the "Software"), to deal
  10  * in the Software without restriction, including without limitation the rights
  11  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  12  * copies of the Software, and to permit persons to whom the Software is
  13  * furnished to do so, subject to the following conditions:
  14  *
  15  * The above copyright notice and this permission notice shall be included in
  16  * all copies or substantial portions of the Software.
  17  */
  18
  19 #include <babeltrace/ctf-text/types.h>
  20 #include <stdio.h>
  21 #include <inttypes.h>
  22 #include <stdint.h>
  23 #include <babeltrace/bitfield.h>
  24
  25 int ctf_text_integer_write(struct stream_pos *ppos, struct definition *definition)
  26 {
  27         struct definition_integer *integer_definition =
  28                 container_of(definition, struct definition_integer, p);
  29         const struct declaration_integer *integer_declaration =
  30                 integer_definition->declaration;
  31         struct ctf_text_stream_pos *pos = ctf_text_pos(ppos);
  32
  33         if (pos->dummy)
  34                 return 0;
  35
  36         if (pos->field_nr++ != 0)
  37                 fprintf(pos->fp, ",");
  38         fprintf(pos->fp, " ");
  39         if (pos->print_names)
  40                 fprintf(pos->fp, "%s = ",
  41                         g_quark_to_string(definition->name));
  42
  43         switch (integer_declaration->base) {
  44         case 0: /* default */
  45         case 10:
  46                 if (!integer_declaration->signedness) {
  47                         fprintf(pos->fp, "%" PRIu64,
  48                                 integer_definition->value._unsigned);
  49                 } else {
  50                         fprintf(pos->fp, "%" PRId64,
  51                                 integer_definition->value._signed);
  52                 }
  53                 break;
  54         case 2:
  55         {
  56                 int bitnr;
  57                 uint64_t v;
  58
  59                 if (!integer_declaration->signedness)
  60                         v = integer_definition->value._unsigned;
  61                 else
  62                         v = (uint64_t) integer_definition->value._signed;
  63
  64                 fprintf(pos->fp, "0b");
  65                 v = _bt_piecewise_lshift(v, 64 - integer_declaration->len);
  66                 for (bitnr = 0; bitnr < integer_declaration->len; bitnr++) {
  67                         fprintf(pos->fp, "%u", (v & (1ULL << 63)) ? 1 : 0);
  68                         v = _bt_piecewise_lshift(v, 1);
  69                 }
  70                 break;
  71         }
  72         case 8:
  73         {
  74                 uint64_t v;
  75
  76                 if (!integer_declaration->signedness)
  77                         v = integer_definition->value._unsigned;
  78                 else
  79                         v = (uint64_t) integer_definition->value._signed;
  80
  81                 fprintf(pos->fp, "0%" PRIo64,
  82                         integer_definition->value._unsigned);
  83                 break;
  84         }
  85         case 16:
  86         {
  87                 uint64_t v;
  88
  89                 if (!integer_declaration->signedness)
  90                         v = integer_definition->value._unsigned;
  91                 else
  92                         v = (uint64_t) integer_definition->value._signed;
  93
  94                 fprintf(pos->fp, "0x%" PRIX64,
  95                         integer_definition->value._unsigned);
  96                 break;
  97         }
  98         default:
  99                 return -EINVAL;
 100         }
 101
 102         return 0;
 103 }