Commit | Line | Data |
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6dc2ca62 MD |
1 | /* |
2 | * Common Trace Format | |
3 | * | |
4 | * Integers read/write functions. | |
5 | * | |
ccd7e1c8 | 6 | * Copyright 2010 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
6dc2ca62 | 7 | * |
ccd7e1c8 MD |
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: | |
de0ba614 | 14 | * |
ccd7e1c8 MD |
15 | * The above copyright notice and this permission notice shall be included in |
16 | * all copies or substantial portions of the Software. | |
6dc2ca62 MD |
17 | */ |
18 | ||
4c8bfb7e MD |
19 | #include <babeltrace/ctf/types.h> |
20 | #include <babeltrace/bitfield.h> | |
6dc2ca62 MD |
21 | #include <stdint.h> |
22 | #include <glib.h> | |
23 | #include <endian.h> | |
24 | ||
7fe00194 | 25 | static |
d11e9c49 MD |
26 | void _aligned_integer_read(struct stream_pos *ppos, |
27 | struct definition *definition) | |
6dc2ca62 | 28 | { |
d11e9c49 MD |
29 | struct definition_integer *integer_definition = |
30 | container_of(definition, struct definition_integer, p); | |
31 | const struct declaration_integer *integer_declaration = | |
32 | integer_definition->declaration; | |
46322b33 | 33 | struct ctf_stream_pos *pos = ctf_pos(ppos); |
f6625916 | 34 | int rbo = (integer_declaration->byte_order != BYTE_ORDER); /* reverse byte order */ |
6dc2ca62 | 35 | |
46322b33 | 36 | ctf_align_pos(pos, integer_declaration->p.alignment); |
bed864a7 | 37 | assert(!(pos->offset % CHAR_BIT)); |
6dc2ca62 | 38 | |
d11e9c49 MD |
39 | if (!integer_declaration->signedness) { |
40 | switch (integer_declaration->len) { | |
41 | case 8: | |
42 | { | |
43 | uint8_t v; | |
44 | ||
45 | v = *(const uint8_t *)pos->base; | |
46 | integer_definition->value._unsigned = v; | |
47 | break; | |
48 | } | |
49 | case 16: | |
50 | { | |
51 | uint16_t v; | |
52 | ||
53 | v = *(const uint16_t *)pos->base; | |
54 | integer_definition->value._unsigned = | |
55 | rbo ? GUINT16_SWAP_LE_BE(v) : v; | |
56 | break; | |
57 | } | |
58 | case 32: | |
59 | { | |
60 | uint32_t v; | |
61 | ||
62 | v = *(const uint32_t *)pos->base; | |
63 | integer_definition->value._unsigned = | |
64 | rbo ? GUINT32_SWAP_LE_BE(v) : v; | |
65 | break; | |
66 | } | |
67 | case 64: | |
68 | { | |
69 | uint64_t v; | |
70 | ||
71 | v = *(const uint64_t *)pos->base; | |
72 | integer_definition->value._unsigned = | |
73 | rbo ? GUINT64_SWAP_LE_BE(v) : v; | |
74 | break; | |
75 | } | |
76 | default: | |
77 | assert(0); | |
78 | } | |
79 | } else { | |
80 | switch (integer_declaration->len) { | |
81 | case 8: | |
82 | { | |
83 | int8_t v; | |
84 | ||
85 | v = *(const int8_t *)pos->base; | |
86 | integer_definition->value._signed = v; | |
87 | break; | |
88 | } | |
89 | case 16: | |
90 | { | |
91 | int16_t v; | |
92 | ||
93 | v = *(const int16_t *)pos->base; | |
94 | integer_definition->value._signed = | |
95 | rbo ? GUINT16_SWAP_LE_BE(v) : v; | |
96 | break; | |
97 | } | |
98 | case 32: | |
99 | { | |
100 | int32_t v; | |
101 | ||
102 | v = *(const int32_t *)pos->base; | |
103 | integer_definition->value._signed = | |
104 | rbo ? GUINT32_SWAP_LE_BE(v) : v; | |
105 | break; | |
106 | } | |
107 | case 64: | |
108 | { | |
109 | int64_t v; | |
110 | ||
111 | v = *(const int64_t *)pos->base; | |
112 | integer_definition->value._signed = | |
113 | rbo ? GUINT64_SWAP_LE_BE(v) : v; | |
114 | break; | |
115 | } | |
116 | default: | |
117 | assert(0); | |
118 | } | |
6dc2ca62 | 119 | } |
d11e9c49 | 120 | ctf_move_pos(pos, integer_declaration->len); |
6dc2ca62 MD |
121 | } |
122 | ||
7fe00194 | 123 | static |
d11e9c49 MD |
124 | void _aligned_integer_write(struct stream_pos *ppos, |
125 | struct definition *definition) | |
6dc2ca62 | 126 | { |
d11e9c49 MD |
127 | struct definition_integer *integer_definition = |
128 | container_of(definition, struct definition_integer, p); | |
129 | const struct declaration_integer *integer_declaration = | |
130 | integer_definition->declaration; | |
46322b33 | 131 | struct ctf_stream_pos *pos = ctf_pos(ppos); |
f6625916 | 132 | int rbo = (integer_declaration->byte_order != BYTE_ORDER); /* reverse byte order */ |
6dc2ca62 | 133 | |
46322b33 | 134 | ctf_align_pos(pos, integer_declaration->p.alignment); |
bed864a7 | 135 | assert(!(pos->offset % CHAR_BIT)); |
6dc2ca62 | 136 | |
bed864a7 | 137 | if (pos->dummy) |
6dc2ca62 | 138 | goto end; |
d11e9c49 MD |
139 | if (!integer_declaration->signedness) { |
140 | uint64_t v = integer_definition->value._unsigned; | |
141 | ||
142 | switch (integer_declaration->len) { | |
143 | case 8: *(uint8_t *) ctf_get_pos_addr(pos) = (uint8_t) v; | |
144 | break; | |
145 | case 16: | |
146 | *(uint16_t *) ctf_get_pos_addr(pos) = rbo ? | |
147 | GUINT16_SWAP_LE_BE((uint16_t) v) : | |
148 | (uint16_t) v; | |
149 | break; | |
150 | case 32: | |
151 | *(uint32_t *) ctf_get_pos_addr(pos) = rbo ? | |
152 | GUINT32_SWAP_LE_BE((uint32_t) v) : | |
153 | (uint32_t) v; | |
154 | break; | |
155 | case 64: | |
156 | *(uint64_t *) ctf_get_pos_addr(pos) = rbo ? | |
157 | GUINT64_SWAP_LE_BE(v) : v; | |
158 | break; | |
159 | default: | |
160 | assert(0); | |
161 | } | |
162 | } else { | |
163 | int64_t v = integer_definition->value._signed; | |
164 | ||
165 | switch (integer_declaration->len) { | |
166 | case 8: *(int8_t *) ctf_get_pos_addr(pos) = (int8_t) v; | |
167 | break; | |
168 | case 16: | |
169 | *(int16_t *) ctf_get_pos_addr(pos) = rbo ? | |
170 | GUINT16_SWAP_LE_BE((int16_t) v) : | |
171 | (int16_t) v; | |
172 | break; | |
173 | case 32: | |
174 | *(int32_t *) ctf_get_pos_addr(pos) = rbo ? | |
175 | GUINT32_SWAP_LE_BE((int32_t) v) : | |
176 | (int32_t) v; | |
177 | break; | |
178 | case 64: | |
179 | *(int64_t *) ctf_get_pos_addr(pos) = rbo ? | |
180 | GUINT64_SWAP_LE_BE(v) : v; | |
181 | break; | |
182 | default: | |
183 | assert(0); | |
184 | } | |
6dc2ca62 MD |
185 | } |
186 | end: | |
46322b33 | 187 | ctf_move_pos(pos, integer_declaration->len); |
6dc2ca62 MD |
188 | } |
189 | ||
d11e9c49 | 190 | void ctf_integer_read(struct stream_pos *ppos, struct definition *definition) |
6dc2ca62 | 191 | { |
d11e9c49 MD |
192 | struct definition_integer *integer_definition = |
193 | container_of(definition, struct definition_integer, p); | |
194 | const struct declaration_integer *integer_declaration = | |
195 | integer_definition->declaration; | |
46322b33 | 196 | struct ctf_stream_pos *pos = ctf_pos(ppos); |
6dc2ca62 | 197 | |
46322b33 | 198 | ctf_align_pos(pos, integer_declaration->p.alignment); |
d11e9c49 MD |
199 | if (!integer_declaration->signedness) { |
200 | if (integer_declaration->byte_order == LITTLE_ENDIAN) | |
201 | bt_bitfield_read_le(pos->base, unsigned long, | |
202 | pos->offset, integer_declaration->len, | |
203 | &integer_definition->value._unsigned); | |
204 | else | |
205 | bt_bitfield_read_be(pos->base, unsigned long, | |
206 | pos->offset, integer_declaration->len, | |
207 | &integer_definition->value._unsigned); | |
208 | } else { | |
209 | if (integer_declaration->byte_order == LITTLE_ENDIAN) | |
210 | bt_bitfield_read_le(pos->base, unsigned long, | |
211 | pos->offset, integer_declaration->len, | |
212 | &integer_definition->value._signed); | |
213 | else | |
214 | bt_bitfield_read_be(pos->base, unsigned long, | |
215 | pos->offset, integer_declaration->len, | |
216 | &integer_definition->value._signed); | |
6dc2ca62 | 217 | } |
46322b33 | 218 | ctf_move_pos(pos, integer_declaration->len); |
6dc2ca62 | 219 | } |
7fe00194 | 220 | |
d11e9c49 | 221 | void ctf_integer_write(struct stream_pos *ppos, struct definition *definition) |
7fe00194 | 222 | { |
d11e9c49 MD |
223 | struct definition_integer *integer_definition = |
224 | container_of(definition, struct definition_integer, p); | |
225 | const struct declaration_integer *integer_declaration = | |
226 | integer_definition->declaration; | |
46322b33 MD |
227 | struct ctf_stream_pos *pos = ctf_pos(ppos); |
228 | ||
229 | ctf_align_pos(pos, integer_declaration->p.alignment); | |
7fe00194 MD |
230 | if (pos->dummy) |
231 | goto end; | |
d11e9c49 MD |
232 | if (!integer_declaration->signedness) { |
233 | if (integer_declaration->byte_order == LITTLE_ENDIAN) | |
234 | bt_bitfield_write_le(pos->base, unsigned long, | |
235 | pos->offset, integer_declaration->len, | |
236 | integer_definition->value._unsigned); | |
237 | else | |
238 | bt_bitfield_write_be(pos->base, unsigned long, | |
239 | pos->offset, integer_declaration->len, | |
240 | integer_definition->value._unsigned); | |
241 | } else { | |
242 | if (integer_declaration->byte_order == LITTLE_ENDIAN) | |
243 | bt_bitfield_write_le(pos->base, unsigned long, | |
244 | pos->offset, integer_declaration->len, | |
245 | integer_definition->value._signed); | |
246 | else | |
247 | bt_bitfield_write_be(pos->base, unsigned long, | |
248 | pos->offset, integer_declaration->len, | |
249 | integer_definition->value._signed); | |
250 | } | |
7fe00194 | 251 | end: |
46322b33 | 252 | ctf_move_pos(pos, integer_declaration->len); |
7fe00194 | 253 | } |