4 * BabelTrace - Float Type Converter
6 * Copyright 2010, 2011 - 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/compiler.h>
20 #include <babeltrace/format.h>
24 struct definition
*_float_definition_new(struct declaration
*declaration
,
25 struct definition_scope
*parent_scope
,
26 GQuark field_name
, int index
,
27 const char *root_name
);
29 void _float_definition_free(struct definition
*definition
);
32 void _float_declaration_free(struct declaration
*declaration
)
34 struct declaration_float
*float_declaration
=
35 container_of(declaration
, struct declaration_float
, p
);
37 declaration_unref(&float_declaration
->exp
->p
);
38 declaration_unref(&float_declaration
->mantissa
->p
);
39 declaration_unref(&float_declaration
->sign
->p
);
40 g_free(float_declaration
);
43 struct declaration_float
*
44 float_declaration_new(size_t mantissa_len
,
45 size_t exp_len
, int byte_order
, size_t alignment
)
47 struct declaration_float
*float_declaration
;
48 struct declaration
*declaration
;
50 float_declaration
= g_new(struct declaration_float
, 1);
51 declaration
= &float_declaration
->p
;
52 declaration
->id
= CTF_TYPE_FLOAT
;
53 declaration
->alignment
= alignment
;
54 declaration
->declaration_free
= _float_declaration_free
;
55 declaration
->definition_new
= _float_definition_new
;
56 declaration
->definition_free
= _float_definition_free
;
58 float_declaration
->byte_order
= byte_order
;
60 float_declaration
->sign
= integer_declaration_new(1,
61 byte_order
, false, 1, 2);
62 float_declaration
->mantissa
= integer_declaration_new(mantissa_len
- 1,
63 byte_order
, false, 1, 10);
64 float_declaration
->exp
= integer_declaration_new(exp_len
,
65 byte_order
, true, 1, 10);
66 return float_declaration
;
71 _float_definition_new(struct declaration
*declaration
,
72 struct definition_scope
*parent_scope
,
73 GQuark field_name
, int index
,
74 const char *root_name
)
76 struct declaration_float
*float_declaration
=
77 container_of(declaration
, struct declaration_float
, p
);
78 struct definition_float
*_float
;
79 struct definition
*tmp
;
82 _float
= g_new(struct definition_float
, 1);
83 declaration_ref(&float_declaration
->p
);
84 _float
->p
.declaration
= declaration
;
85 _float
->declaration
= float_declaration
;
86 _float
->scope
= new_definition_scope(parent_scope
, field_name
, root_name
);
87 _float
->p
.path
= new_definition_path(parent_scope
, field_name
, root_name
);
88 if (float_declaration
->byte_order
== LITTLE_ENDIAN
) {
89 tmp
= float_declaration
->mantissa
->p
.definition_new(&float_declaration
->mantissa
->p
,
90 _float
->scope
, g_quark_from_static_string("mantissa"), 0, NULL
);
91 _float
->mantissa
= container_of(tmp
, struct definition_integer
, p
);
92 tmp
= float_declaration
->exp
->p
.definition_new(&float_declaration
->exp
->p
,
93 _float
->scope
, g_quark_from_static_string("exp"), 1, NULL
);
94 _float
->exp
= container_of(tmp
, struct definition_integer
, p
);
95 tmp
= float_declaration
->sign
->p
.definition_new(&float_declaration
->sign
->p
,
96 _float
->scope
, g_quark_from_static_string("sign"), 2, NULL
);
97 _float
->sign
= container_of(tmp
, struct definition_integer
, p
);
99 tmp
= float_declaration
->sign
->p
.definition_new(&float_declaration
->sign
->p
,
100 _float
->scope
, g_quark_from_static_string("sign"), 0, NULL
);
101 _float
->sign
= container_of(tmp
, struct definition_integer
, p
);
102 tmp
= float_declaration
->exp
->p
.definition_new(&float_declaration
->exp
->p
,
103 _float
->scope
, g_quark_from_static_string("exp"), 1, NULL
);
104 _float
->exp
= container_of(tmp
, struct definition_integer
, p
);
105 tmp
= float_declaration
->mantissa
->p
.definition_new(&float_declaration
->mantissa
->p
,
106 _float
->scope
, g_quark_from_static_string("mantissa"), 2, NULL
);
107 _float
->mantissa
= container_of(tmp
, struct definition_integer
, p
);
111 * Use INT_MAX order to ensure that all fields of the parent
112 * scope are seen as being prior to this scope.
114 _float
->p
.index
= root_name
? INT_MAX
: index
;
115 _float
->p
.name
= field_name
;
117 ret
= register_field_definition(field_name
, &_float
->p
,
124 void _float_definition_free(struct definition
*definition
)
126 struct definition_float
*_float
=
127 container_of(definition
, struct definition_float
, p
);
129 definition_unref(&_float
->sign
->p
);
130 definition_unref(&_float
->exp
->p
);
131 definition_unref(&_float
->mantissa
->p
);
132 declaration_unref(_float
->p
.declaration
);
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