Commit | Line | Data |
---|---|---|
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> |
809cbff5 | 23 | #include <endian.h> |
0a46062b | 24 | |
c054553d | 25 | static |
f6625916 | 26 | struct definition *_float_definition_new(struct declaration *declaration, |
05c749e5 | 27 | struct definition_scope *parent_scope, |
98df1c9f MD |
28 | GQuark field_name, int index, |
29 | const char *root_name); | |
c054553d | 30 | static |
e1151715 | 31 | void _float_definition_free(struct definition *definition); |
c054553d | 32 | |
c054553d | 33 | static |
f6625916 | 34 | void _float_declaration_free(struct declaration *declaration) |
90b676d7 | 35 | { |
f6625916 MD |
36 | struct declaration_float *float_declaration = |
37 | container_of(declaration, struct declaration_float, p); | |
c054553d | 38 | |
f6625916 MD |
39 | declaration_unref(&float_declaration->exp->p); |
40 | declaration_unref(&float_declaration->mantissa->p); | |
41 | declaration_unref(&float_declaration->sign->p); | |
42 | g_free(float_declaration); | |
90b676d7 MD |
43 | } |
44 | ||
f6625916 | 45 | struct declaration_float * |
add40b62 | 46 | float_declaration_new(size_t mantissa_len, |
e19c3d69 | 47 | size_t exp_len, int byte_order, size_t alignment) |
0a46062b | 48 | { |
f6625916 MD |
49 | struct declaration_float *float_declaration; |
50 | struct declaration *declaration; | |
0a46062b | 51 | |
f6625916 MD |
52 | float_declaration = g_new(struct declaration_float, 1); |
53 | declaration = &float_declaration->p; | |
54 | declaration->id = CTF_TYPE_FLOAT; | |
f6625916 | 55 | declaration->alignment = alignment; |
f6625916 MD |
56 | declaration->declaration_free = _float_declaration_free; |
57 | declaration->definition_new = _float_definition_new; | |
58 | declaration->definition_free = _float_definition_free; | |
59 | declaration->ref = 1; | |
60 | float_declaration->byte_order = byte_order; | |
e19c3d69 | 61 | |
add40b62 | 62 | float_declaration->sign = integer_declaration_new(1, |
81dee1bb MD |
63 | byte_order, false, 1, 2, |
64 | CTF_STRING_NONE); | |
add40b62 | 65 | float_declaration->mantissa = integer_declaration_new(mantissa_len - 1, |
81dee1bb MD |
66 | byte_order, false, 1, 10, |
67 | CTF_STRING_NONE); | |
add40b62 | 68 | float_declaration->exp = integer_declaration_new(exp_len, |
81dee1bb MD |
69 | byte_order, true, 1, 10, |
70 | CTF_STRING_NONE); | |
f6625916 | 71 | return float_declaration; |
0a46062b | 72 | } |
c054553d MD |
73 | |
74 | static | |
e1151715 | 75 | struct definition * |
f6625916 | 76 | _float_definition_new(struct declaration *declaration, |
05c749e5 | 77 | struct definition_scope *parent_scope, |
98df1c9f MD |
78 | GQuark field_name, int index, |
79 | const char *root_name) | |
c054553d | 80 | { |
f6625916 MD |
81 | struct declaration_float *float_declaration = |
82 | container_of(declaration, struct declaration_float, p); | |
e1151715 | 83 | struct definition_float *_float; |
d11e9c49 | 84 | struct definition *tmp; |
98df1c9f | 85 | int ret; |
c054553d | 86 | |
e1151715 | 87 | _float = g_new(struct definition_float, 1); |
f6625916 | 88 | declaration_ref(&float_declaration->p); |
05c749e5 MD |
89 | _float->p.declaration = declaration; |
90 | _float->declaration = float_declaration; | |
a35173fe | 91 | _float->p.scope = new_definition_scope(parent_scope, field_name, root_name); |
98df1c9f | 92 | _float->p.path = new_definition_path(parent_scope, field_name, root_name); |
d11e9c49 MD |
93 | if (float_declaration->byte_order == LITTLE_ENDIAN) { |
94 | tmp = float_declaration->mantissa->p.definition_new(&float_declaration->mantissa->p, | |
a35173fe | 95 | _float->p.scope, g_quark_from_static_string("mantissa"), 0, NULL); |
d11e9c49 MD |
96 | _float->mantissa = container_of(tmp, struct definition_integer, p); |
97 | tmp = float_declaration->exp->p.definition_new(&float_declaration->exp->p, | |
a35173fe | 98 | _float->p.scope, g_quark_from_static_string("exp"), 1, NULL); |
d11e9c49 MD |
99 | _float->exp = container_of(tmp, struct definition_integer, p); |
100 | tmp = float_declaration->sign->p.definition_new(&float_declaration->sign->p, | |
a35173fe | 101 | _float->p.scope, g_quark_from_static_string("sign"), 2, NULL); |
d11e9c49 MD |
102 | _float->sign = container_of(tmp, struct definition_integer, p); |
103 | } else { | |
104 | tmp = float_declaration->sign->p.definition_new(&float_declaration->sign->p, | |
a35173fe | 105 | _float->p.scope, g_quark_from_static_string("sign"), 0, NULL); |
d11e9c49 MD |
106 | _float->sign = container_of(tmp, struct definition_integer, p); |
107 | tmp = float_declaration->exp->p.definition_new(&float_declaration->exp->p, | |
a35173fe | 108 | _float->p.scope, g_quark_from_static_string("exp"), 1, NULL); |
d11e9c49 MD |
109 | _float->exp = container_of(tmp, struct definition_integer, p); |
110 | tmp = float_declaration->mantissa->p.definition_new(&float_declaration->mantissa->p, | |
a35173fe | 111 | _float->p.scope, g_quark_from_static_string("mantissa"), 2, NULL); |
d11e9c49 MD |
112 | _float->mantissa = container_of(tmp, struct definition_integer, p); |
113 | } | |
c054553d | 114 | _float->p.ref = 1; |
98df1c9f MD |
115 | /* |
116 | * Use INT_MAX order to ensure that all fields of the parent | |
117 | * scope are seen as being prior to this scope. | |
118 | */ | |
119 | _float->p.index = root_name ? INT_MAX : index; | |
b1a2f580 | 120 | _float->p.name = field_name; |
c054553d | 121 | _float->value = 0.0; |
f72803ca MD |
122 | if (parent_scope) { |
123 | ret = register_field_definition(field_name, &_float->p, | |
124 | parent_scope); | |
125 | assert(!ret); | |
126 | } | |
c054553d MD |
127 | return &_float->p; |
128 | } | |
129 | ||
130 | static | |
e1151715 | 131 | void _float_definition_free(struct definition *definition) |
c054553d | 132 | { |
e1151715 MD |
133 | struct definition_float *_float = |
134 | container_of(definition, struct definition_float, p); | |
c054553d | 135 | |
d11e9c49 MD |
136 | definition_unref(&_float->sign->p); |
137 | definition_unref(&_float->exp->p); | |
138 | definition_unref(&_float->mantissa->p); | |
a35173fe | 139 | free_definition_scope(_float->p.scope); |
f6625916 | 140 | declaration_unref(_float->p.declaration); |
c054553d MD |
141 | g_free(_float); |
142 | } |