Commit | Line | Data |
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0a46062b | 1 | /* |
ccd7e1c8 | 2 | * float.c |
0a46062b | 3 | * |
ccd7e1c8 | 4 | * BabelTrace - Float Type Converter |
0a46062b | 5 | * |
64fa3fec MD |
6 | * Copyright 2010-2011 EfficiOS Inc. and Linux Foundation |
7 | * | |
8 | * Author: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | |
0a46062b | 9 | * |
ccd7e1c8 MD |
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: | |
0a46062b | 16 | * |
ccd7e1c8 MD |
17 | * The above copyright notice and this permission notice shall be included in |
18 | * all copies or substantial portions of the Software. | |
0a46062b MD |
19 | */ |
20 | ||
21 | #include <babeltrace/compiler.h> | |
4c8bfb7e | 22 | #include <babeltrace/format.h> |
3122e6f0 | 23 | #include <babeltrace/types.h> |
dd6f7e0f | 24 | #include <babeltrace/endian.h> |
0a46062b | 25 | |
c054553d | 26 | static |
f6625916 | 27 | struct definition *_float_definition_new(struct declaration *declaration, |
05c749e5 | 28 | struct definition_scope *parent_scope, |
98df1c9f MD |
29 | GQuark field_name, int index, |
30 | const char *root_name); | |
c054553d | 31 | static |
e1151715 | 32 | void _float_definition_free(struct definition *definition); |
c054553d | 33 | |
c054553d | 34 | static |
f6625916 | 35 | void _float_declaration_free(struct declaration *declaration) |
90b676d7 | 36 | { |
f6625916 MD |
37 | struct declaration_float *float_declaration = |
38 | container_of(declaration, struct declaration_float, p); | |
c054553d | 39 | |
f6625916 MD |
40 | declaration_unref(&float_declaration->exp->p); |
41 | declaration_unref(&float_declaration->mantissa->p); | |
42 | declaration_unref(&float_declaration->sign->p); | |
43 | g_free(float_declaration); | |
90b676d7 MD |
44 | } |
45 | ||
f6625916 | 46 | struct declaration_float * |
add40b62 | 47 | float_declaration_new(size_t mantissa_len, |
e19c3d69 | 48 | size_t exp_len, int byte_order, size_t alignment) |
0a46062b | 49 | { |
f6625916 MD |
50 | struct declaration_float *float_declaration; |
51 | struct declaration *declaration; | |
0a46062b | 52 | |
f6625916 MD |
53 | float_declaration = g_new(struct declaration_float, 1); |
54 | declaration = &float_declaration->p; | |
55 | declaration->id = CTF_TYPE_FLOAT; | |
f6625916 | 56 | declaration->alignment = alignment; |
f6625916 MD |
57 | declaration->declaration_free = _float_declaration_free; |
58 | declaration->definition_new = _float_definition_new; | |
59 | declaration->definition_free = _float_definition_free; | |
60 | declaration->ref = 1; | |
61 | float_declaration->byte_order = byte_order; | |
e19c3d69 | 62 | |
add40b62 | 63 | float_declaration->sign = integer_declaration_new(1, |
81dee1bb | 64 | byte_order, false, 1, 2, |
56e60373 | 65 | CTF_STRING_NONE, NULL); |
add40b62 | 66 | float_declaration->mantissa = integer_declaration_new(mantissa_len - 1, |
81dee1bb | 67 | byte_order, false, 1, 10, |
56e60373 | 68 | CTF_STRING_NONE, NULL); |
add40b62 | 69 | float_declaration->exp = integer_declaration_new(exp_len, |
81dee1bb | 70 | byte_order, true, 1, 10, |
56e60373 | 71 | CTF_STRING_NONE, NULL); |
f6625916 | 72 | return float_declaration; |
0a46062b | 73 | } |
c054553d MD |
74 | |
75 | static | |
e1151715 | 76 | struct definition * |
f6625916 | 77 | _float_definition_new(struct declaration *declaration, |
05c749e5 | 78 | struct definition_scope *parent_scope, |
98df1c9f MD |
79 | GQuark field_name, int index, |
80 | const char *root_name) | |
c054553d | 81 | { |
f6625916 MD |
82 | struct declaration_float *float_declaration = |
83 | container_of(declaration, struct declaration_float, p); | |
e1151715 | 84 | struct definition_float *_float; |
d11e9c49 | 85 | struct definition *tmp; |
98df1c9f | 86 | int ret; |
c054553d | 87 | |
e1151715 | 88 | _float = g_new(struct definition_float, 1); |
f6625916 | 89 | declaration_ref(&float_declaration->p); |
05c749e5 MD |
90 | _float->p.declaration = declaration; |
91 | _float->declaration = float_declaration; | |
a35173fe | 92 | _float->p.scope = new_definition_scope(parent_scope, field_name, root_name); |
98df1c9f | 93 | _float->p.path = new_definition_path(parent_scope, field_name, root_name); |
d11e9c49 MD |
94 | if (float_declaration->byte_order == LITTLE_ENDIAN) { |
95 | tmp = float_declaration->mantissa->p.definition_new(&float_declaration->mantissa->p, | |
a35173fe | 96 | _float->p.scope, g_quark_from_static_string("mantissa"), 0, NULL); |
d11e9c49 MD |
97 | _float->mantissa = container_of(tmp, struct definition_integer, p); |
98 | tmp = float_declaration->exp->p.definition_new(&float_declaration->exp->p, | |
a35173fe | 99 | _float->p.scope, g_quark_from_static_string("exp"), 1, NULL); |
d11e9c49 MD |
100 | _float->exp = container_of(tmp, struct definition_integer, p); |
101 | tmp = float_declaration->sign->p.definition_new(&float_declaration->sign->p, | |
a35173fe | 102 | _float->p.scope, g_quark_from_static_string("sign"), 2, NULL); |
d11e9c49 MD |
103 | _float->sign = container_of(tmp, struct definition_integer, p); |
104 | } else { | |
105 | tmp = float_declaration->sign->p.definition_new(&float_declaration->sign->p, | |
a35173fe | 106 | _float->p.scope, g_quark_from_static_string("sign"), 0, NULL); |
d11e9c49 MD |
107 | _float->sign = container_of(tmp, struct definition_integer, p); |
108 | tmp = float_declaration->exp->p.definition_new(&float_declaration->exp->p, | |
a35173fe | 109 | _float->p.scope, g_quark_from_static_string("exp"), 1, NULL); |
d11e9c49 MD |
110 | _float->exp = container_of(tmp, struct definition_integer, p); |
111 | tmp = float_declaration->mantissa->p.definition_new(&float_declaration->mantissa->p, | |
a35173fe | 112 | _float->p.scope, g_quark_from_static_string("mantissa"), 2, NULL); |
d11e9c49 MD |
113 | _float->mantissa = container_of(tmp, struct definition_integer, p); |
114 | } | |
c054553d | 115 | _float->p.ref = 1; |
98df1c9f MD |
116 | /* |
117 | * Use INT_MAX order to ensure that all fields of the parent | |
118 | * scope are seen as being prior to this scope. | |
119 | */ | |
120 | _float->p.index = root_name ? INT_MAX : index; | |
b1a2f580 | 121 | _float->p.name = field_name; |
c054553d | 122 | _float->value = 0.0; |
f72803ca MD |
123 | if (parent_scope) { |
124 | ret = register_field_definition(field_name, &_float->p, | |
125 | parent_scope); | |
126 | assert(!ret); | |
127 | } | |
c054553d MD |
128 | return &_float->p; |
129 | } | |
130 | ||
131 | static | |
e1151715 | 132 | void _float_definition_free(struct definition *definition) |
c054553d | 133 | { |
e1151715 MD |
134 | struct definition_float *_float = |
135 | container_of(definition, struct definition_float, p); | |
c054553d | 136 | |
d11e9c49 MD |
137 | definition_unref(&_float->sign->p); |
138 | definition_unref(&_float->exp->p); | |
139 | definition_unref(&_float->mantissa->p); | |
a35173fe | 140 | free_definition_scope(_float->p.scope); |
f6625916 | 141 | declaration_unref(_float->p.declaration); |
c054553d MD |
142 | g_free(_float); |
143 | } |