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 * The aligned read/write functions are expected to be faster than the
27 * bitfield variants. They will be enabled eventually as an
32 void _aligned_integer_read(struct stream_pos
*ppos
,
33 struct definition
*definition
)
35 struct definition_integer
*integer_definition
=
36 container_of(definition
, struct definition_integer
, p
);
37 const struct declaration_integer
*integer_declaration
=
38 integer_definition
->declaration
;
39 struct ctf_stream_pos
*pos
= ctf_pos(ppos
);
40 int rbo
= (integer_declaration
->byte_order
!= BYTE_ORDER
); /* reverse byte order */
42 ctf_align_pos(pos
, integer_declaration
->p
.alignment
);
43 assert(!(pos
->offset
% CHAR_BIT
));
45 if (!integer_declaration
->signedness
) {
46 switch (integer_declaration
->len
) {
51 v
= *(const uint8_t *) ctf_get_pos_addr(pos
);
52 integer_definition
->value
._unsigned
= v
;
59 v
= *(const uint16_t *) ctf_get_pos_addr(pos
);
60 integer_definition
->value
._unsigned
=
61 rbo
? GUINT16_SWAP_LE_BE(v
) : v
;
68 v
= *(const uint32_t *) ctf_get_pos_addr(pos
);
69 integer_definition
->value
._unsigned
=
70 rbo
? GUINT32_SWAP_LE_BE(v
) : v
;
77 v
= *(const uint64_t *) ctf_get_pos_addr(pos
);
78 integer_definition
->value
._unsigned
=
79 rbo
? GUINT64_SWAP_LE_BE(v
) : v
;
86 switch (integer_declaration
->len
) {
91 v
= *(const int8_t *) ctf_get_pos_addr(pos
);
92 integer_definition
->value
._signed
= v
;
99 v
= *(const int16_t *) ctf_get_pos_addr(pos
);
100 integer_definition
->value
._signed
=
101 rbo
? GUINT16_SWAP_LE_BE(v
) : v
;
108 v
= *(const int32_t *) ctf_get_pos_addr(pos
);
109 integer_definition
->value
._signed
=
110 rbo
? GUINT32_SWAP_LE_BE(v
) : v
;
117 v
= *(const int64_t *) ctf_get_pos_addr(pos
);
118 integer_definition
->value
._signed
=
119 rbo
? GUINT64_SWAP_LE_BE(v
) : v
;
126 ctf_move_pos(pos
, integer_declaration
->len
);
130 void _aligned_integer_write(struct stream_pos
*ppos
,
131 struct definition
*definition
)
133 struct definition_integer
*integer_definition
=
134 container_of(definition
, struct definition_integer
, p
);
135 const struct declaration_integer
*integer_declaration
=
136 integer_definition
->declaration
;
137 struct ctf_stream_pos
*pos
= ctf_pos(ppos
);
138 int rbo
= (integer_declaration
->byte_order
!= BYTE_ORDER
); /* reverse byte order */
140 ctf_align_pos(pos
, integer_declaration
->p
.alignment
);
141 assert(!(pos
->offset
% CHAR_BIT
));
145 if (!integer_declaration
->signedness
) {
146 uint64_t v
= integer_definition
->value
._unsigned
;
148 switch (integer_declaration
->len
) {
149 case 8: *(uint8_t *) ctf_get_pos_addr(pos
) = (uint8_t) v
;
152 *(uint16_t *) ctf_get_pos_addr(pos
) = rbo
?
153 GUINT16_SWAP_LE_BE((uint16_t) v
) :
157 *(uint32_t *) ctf_get_pos_addr(pos
) = rbo
?
158 GUINT32_SWAP_LE_BE((uint32_t) v
) :
162 *(uint64_t *) ctf_get_pos_addr(pos
) = rbo
?
163 GUINT64_SWAP_LE_BE(v
) : v
;
169 int64_t v
= integer_definition
->value
._signed
;
171 switch (integer_declaration
->len
) {
172 case 8: *(int8_t *) ctf_get_pos_addr(pos
) = (int8_t) v
;
175 *(int16_t *) ctf_get_pos_addr(pos
) = rbo
?
176 GUINT16_SWAP_LE_BE((int16_t) v
) :
180 *(int32_t *) ctf_get_pos_addr(pos
) = rbo
?
181 GUINT32_SWAP_LE_BE((int32_t) v
) :
185 *(int64_t *) ctf_get_pos_addr(pos
) = rbo
?
186 GUINT64_SWAP_LE_BE(v
) : v
;
193 ctf_move_pos(pos
, integer_declaration
->len
);
196 void ctf_integer_read(struct stream_pos
*ppos
, struct definition
*definition
)
198 struct definition_integer
*integer_definition
=
199 container_of(definition
, struct definition_integer
, p
);
200 const struct declaration_integer
*integer_declaration
=
201 integer_definition
->declaration
;
202 struct ctf_stream_pos
*pos
= ctf_pos(ppos
);
204 if (!(integer_declaration
->p
.alignment
% CHAR_BIT
)
205 && !(integer_declaration
->len
% CHAR_BIT
)) {
206 _aligned_integer_read(ppos
, definition
);
210 ctf_align_pos(pos
, integer_declaration
->p
.alignment
);
211 if (!integer_declaration
->signedness
) {
212 if (integer_declaration
->byte_order
== LITTLE_ENDIAN
)
213 bt_bitfield_read_le(pos
->base
, unsigned long,
214 pos
->offset
, integer_declaration
->len
,
215 &integer_definition
->value
._unsigned
);
217 bt_bitfield_read_be(pos
->base
, unsigned long,
218 pos
->offset
, integer_declaration
->len
,
219 &integer_definition
->value
._unsigned
);
221 if (integer_declaration
->byte_order
== LITTLE_ENDIAN
)
222 bt_bitfield_read_le(pos
->base
, unsigned long,
223 pos
->offset
, integer_declaration
->len
,
224 &integer_definition
->value
._signed
);
226 bt_bitfield_read_be(pos
->base
, unsigned long,
227 pos
->offset
, integer_declaration
->len
,
228 &integer_definition
->value
._signed
);
230 ctf_move_pos(pos
, integer_declaration
->len
);
233 void ctf_integer_write(struct stream_pos
*ppos
, struct definition
*definition
)
235 struct definition_integer
*integer_definition
=
236 container_of(definition
, struct definition_integer
, p
);
237 const struct declaration_integer
*integer_declaration
=
238 integer_definition
->declaration
;
239 struct ctf_stream_pos
*pos
= ctf_pos(ppos
);
241 if (!(integer_declaration
->p
.alignment
% CHAR_BIT
)
242 && !(integer_declaration
->len
% CHAR_BIT
)) {
243 _aligned_integer_write(ppos
, definition
);
247 ctf_align_pos(pos
, integer_declaration
->p
.alignment
);
250 if (!integer_declaration
->signedness
) {
251 if (integer_declaration
->byte_order
== LITTLE_ENDIAN
)
252 bt_bitfield_write_le(pos
->base
, unsigned long,
253 pos
->offset
, integer_declaration
->len
,
254 integer_definition
->value
._unsigned
);
256 bt_bitfield_write_be(pos
->base
, unsigned long,
257 pos
->offset
, integer_declaration
->len
,
258 integer_definition
->value
._unsigned
);
260 if (integer_declaration
->byte_order
== LITTLE_ENDIAN
)
261 bt_bitfield_write_le(pos
->base
, unsigned long,
262 pos
->offset
, integer_declaration
->len
,
263 integer_definition
->value
._signed
);
265 bt_bitfield_write_be(pos
->base
, unsigned long,
266 pos
->offset
, integer_declaration
->len
,
267 integer_definition
->value
._signed
);
270 ctf_move_pos(pos
, integer_declaration
->len
);
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