Fix: respect signed integers' length when printing in hex base
[babeltrace.git] / formats / ctf-text / types / integer.c
1 /*
2 * Common Trace Format
3 *
4 * Integers read/write functions.
5 *
6 * Copyright 2010-2011 EfficiOS Inc. and Linux Foundation
7 *
8 * Author: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
9 *
10 * Permission is hereby granted, free of charge, to any person obtaining a copy
11 * of this software and associated documentation files (the "Software"), to deal
12 * in the Software without restriction, including without limitation the rights
13 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
14 * copies of the Software, and to permit persons to whom the Software is
15 * furnished to do so, subject to the following conditions:
16 *
17 * The above copyright notice and this permission notice shall be included in
18 * all copies or substantial portions of the Software.
19 *
20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
21 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
23 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
24 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
25 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
26 * SOFTWARE.
27 */
28
29 #include <babeltrace/ctf-text/types.h>
30 #include <stdio.h>
31 #include <inttypes.h>
32 #include <stdint.h>
33 #include <babeltrace/bitfield.h>
34 #include <babeltrace/trace-debuginfo.h>
35
36 int ctf_text_integer_write(struct bt_stream_pos *ppos, struct bt_definition *definition)
37 {
38 struct definition_integer *integer_definition =
39 container_of(definition, struct definition_integer, p);
40 const struct declaration_integer *integer_declaration =
41 integer_definition->declaration;
42 struct ctf_text_stream_pos *pos = ctf_text_pos(ppos);
43
44 if (!print_field(definition))
45 return 0;
46
47 if (pos->dummy)
48 return 0;
49
50 if (pos->field_nr++ != 0)
51 fprintf(pos->fp, ",");
52 fprintf(pos->fp, " ");
53 if (pos->print_names)
54 fprintf(pos->fp, "%s = ",
55 rem_(g_quark_to_string(definition->name)));
56
57 if (pos->string
58 && (integer_declaration->encoding == CTF_STRING_ASCII
59 || integer_declaration->encoding == CTF_STRING_UTF8)) {
60
61 if (!integer_declaration->signedness) {
62 g_string_append_c(pos->string,
63 (int) integer_definition->value._unsigned);
64 } else {
65 g_string_append_c(pos->string,
66 (int) integer_definition->value._signed);
67 }
68 return 0;
69 }
70
71 switch (integer_declaration->base) {
72 case 0: /* default */
73 case 10:
74 if (!integer_declaration->signedness) {
75 fprintf(pos->fp, "%" PRIu64,
76 integer_definition->value._unsigned);
77 } else {
78 fprintf(pos->fp, "%" PRId64,
79 integer_definition->value._signed);
80 }
81 break;
82 case 2:
83 {
84 int bitnr;
85 uint64_t v;
86
87 if (!integer_declaration->signedness)
88 v = integer_definition->value._unsigned;
89 else
90 v = (uint64_t) integer_definition->value._signed;
91
92 fprintf(pos->fp, "0b");
93 v = _bt_piecewise_lshift(v, 64 - integer_declaration->len);
94 for (bitnr = 0; bitnr < integer_declaration->len; bitnr++) {
95 fprintf(pos->fp, "%u", (v & (1ULL << 63)) ? 1 : 0);
96 v = _bt_piecewise_lshift(v, 1);
97 }
98 break;
99 }
100 case 8:
101 {
102 uint64_t v;
103
104 if (!integer_declaration->signedness)
105 v = integer_definition->value._unsigned;
106 else
107 v = (uint64_t) integer_definition->value._signed;
108
109 fprintf(pos->fp, "0%" PRIo64, v);
110 break;
111 }
112 case 16:
113 {
114 uint64_t v;
115
116 if (!integer_declaration->signedness) {
117 v = integer_definition->value._unsigned;
118 } else {
119 /* Round length to the nearest nibble */
120 uint8_t rounded_len = ((integer_declaration->len + 3) & ~0x3);
121
122 v = (uint64_t) integer_definition->value._signed;
123 v &= ((uint64_t) 1 << rounded_len) - 1;
124 }
125
126 fprintf(pos->fp, "0x%" PRIX64, v);
127 break;
128 }
129 default:
130 return -EINVAL;
131 }
132
133 ctf_text_integer_write_debug_info(ppos, definition);
134
135 return 0;
136 }
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