4 * Integers read/write functions.
6 * Copyright 2010 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
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:
15 * The above copyright notice and this permission notice shall be included in
16 * all copies or substantial portions of the Software.
19 #include <babeltrace/ctf/types.h>
20 #include <babeltrace/bitfield.h>
26 void _aligned_integer_read(struct stream_pos
*ppos
,
27 struct definition
*definition
)
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
;
33 struct ctf_stream_pos
*pos
= ctf_pos(ppos
);
34 int rbo
= (integer_declaration
->byte_order
!= BYTE_ORDER
); /* reverse byte order */
36 ctf_align_pos(pos
, integer_declaration
->p
.alignment
);
37 assert(!(pos
->offset
% CHAR_BIT
));
39 if (!integer_declaration
->signedness
) {
40 switch (integer_declaration
->len
) {
45 v
= *(const uint8_t *)pos
->base
;
46 integer_definition
->value
._unsigned
= v
;
53 v
= *(const uint16_t *)pos
->base
;
54 integer_definition
->value
._unsigned
=
55 rbo
? GUINT16_SWAP_LE_BE(v
) : v
;
62 v
= *(const uint32_t *)pos
->base
;
63 integer_definition
->value
._unsigned
=
64 rbo
? GUINT32_SWAP_LE_BE(v
) : v
;
71 v
= *(const uint64_t *)pos
->base
;
72 integer_definition
->value
._unsigned
=
73 rbo
? GUINT64_SWAP_LE_BE(v
) : v
;
80 switch (integer_declaration
->len
) {
85 v
= *(const int8_t *)pos
->base
;
86 integer_definition
->value
._signed
= v
;
93 v
= *(const int16_t *)pos
->base
;
94 integer_definition
->value
._signed
=
95 rbo
? GUINT16_SWAP_LE_BE(v
) : v
;
102 v
= *(const int32_t *)pos
->base
;
103 integer_definition
->value
._signed
=
104 rbo
? GUINT32_SWAP_LE_BE(v
) : v
;
111 v
= *(const int64_t *)pos
->base
;
112 integer_definition
->value
._signed
=
113 rbo
? GUINT64_SWAP_LE_BE(v
) : v
;
120 ctf_move_pos(pos
, integer_declaration
->len
);
124 void _aligned_integer_write(struct stream_pos
*ppos
,
125 struct definition
*definition
)
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
;
131 struct ctf_stream_pos
*pos
= ctf_pos(ppos
);
132 int rbo
= (integer_declaration
->byte_order
!= BYTE_ORDER
); /* reverse byte order */
134 ctf_align_pos(pos
, integer_declaration
->p
.alignment
);
135 assert(!(pos
->offset
% CHAR_BIT
));
139 if (!integer_declaration
->signedness
) {
140 uint64_t v
= integer_definition
->value
._unsigned
;
142 switch (integer_declaration
->len
) {
143 case 8: *(uint8_t *) ctf_get_pos_addr(pos
) = (uint8_t) v
;
146 *(uint16_t *) ctf_get_pos_addr(pos
) = rbo
?
147 GUINT16_SWAP_LE_BE((uint16_t) v
) :
151 *(uint32_t *) ctf_get_pos_addr(pos
) = rbo
?
152 GUINT32_SWAP_LE_BE((uint32_t) v
) :
156 *(uint64_t *) ctf_get_pos_addr(pos
) = rbo
?
157 GUINT64_SWAP_LE_BE(v
) : v
;
163 int64_t v
= integer_definition
->value
._signed
;
165 switch (integer_declaration
->len
) {
166 case 8: *(int8_t *) ctf_get_pos_addr(pos
) = (int8_t) v
;
169 *(int16_t *) ctf_get_pos_addr(pos
) = rbo
?
170 GUINT16_SWAP_LE_BE((int16_t) v
) :
174 *(int32_t *) ctf_get_pos_addr(pos
) = rbo
?
175 GUINT32_SWAP_LE_BE((int32_t) v
) :
179 *(int64_t *) ctf_get_pos_addr(pos
) = rbo
?
180 GUINT64_SWAP_LE_BE(v
) : v
;
187 ctf_move_pos(pos
, integer_declaration
->len
);
190 void ctf_integer_read(struct stream_pos
*ppos
, struct definition
*definition
)
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
;
196 struct ctf_stream_pos
*pos
= ctf_pos(ppos
);
198 ctf_align_pos(pos
, integer_declaration
->p
.alignment
);
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
);
205 bt_bitfield_read_be(pos
->base
, unsigned long,
206 pos
->offset
, integer_declaration
->len
,
207 &integer_definition
->value
._unsigned
);
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
);
214 bt_bitfield_read_be(pos
->base
, unsigned long,
215 pos
->offset
, integer_declaration
->len
,
216 &integer_definition
->value
._signed
);
218 ctf_move_pos(pos
, integer_declaration
->len
);
221 void ctf_integer_write(struct stream_pos
*ppos
, struct definition
*definition
)
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
;
227 struct ctf_stream_pos
*pos
= ctf_pos(ppos
);
229 ctf_align_pos(pos
, integer_declaration
->p
.alignment
);
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
);
238 bt_bitfield_write_be(pos
->base
, unsigned long,
239 pos
->offset
, integer_declaration
->len
,
240 integer_definition
->value
._unsigned
);
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
);
247 bt_bitfield_write_be(pos
->base
, unsigned long,
248 pos
->offset
, integer_declaration
->len
,
249 integer_definition
->value
._signed
);
252 ctf_move_pos(pos
, integer_declaration
->len
);
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