-/*
- * float.c
- *
- * BabelTrace - Float Type Converter
- *
- * Copyright 2010-2011 EfficiOS Inc. and Linux Foundation
- *
- * Author: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */
-
-#include <babeltrace/compiler.h>
-#include <babeltrace/format.h>
-#include <babeltrace/types.h>
-#include <babeltrace/endian.h>
-
-static
-struct bt_definition *_float_definition_new(struct bt_declaration *declaration,
- struct definition_scope *parent_scope,
- GQuark field_name, int index,
- const char *root_name);
-static
-void _float_definition_free(struct bt_definition *definition);
-
-static
-void _float_declaration_free(struct bt_declaration *declaration)
-{
- struct declaration_float *float_declaration =
- container_of(declaration, struct declaration_float, p);
-
- bt_declaration_unref(&float_declaration->exp->p);
- bt_declaration_unref(&float_declaration->mantissa->p);
- bt_declaration_unref(&float_declaration->sign->p);
- g_free(float_declaration);
-}
-
-struct declaration_float *
- bt_float_declaration_new(size_t mantissa_len,
- size_t exp_len, int byte_order, size_t alignment)
-{
- struct declaration_float *float_declaration;
- struct bt_declaration *declaration;
-
- float_declaration = g_new(struct declaration_float, 1);
- declaration = &float_declaration->p;
- declaration->id = CTF_TYPE_FLOAT;
- declaration->alignment = alignment;
- declaration->declaration_free = _float_declaration_free;
- declaration->definition_new = _float_definition_new;
- declaration->definition_free = _float_definition_free;
- declaration->ref = 1;
- float_declaration->byte_order = byte_order;
-
- float_declaration->sign = bt_integer_declaration_new(1,
- byte_order, false, 1, 2,
- CTF_STRING_NONE, NULL);
- float_declaration->mantissa = bt_integer_declaration_new(mantissa_len - 1,
- byte_order, false, 1, 10,
- CTF_STRING_NONE, NULL);
- float_declaration->exp = bt_integer_declaration_new(exp_len,
- byte_order, true, 1, 10,
- CTF_STRING_NONE, NULL);
- return float_declaration;
-}
-
-static
-struct bt_definition *
- _float_definition_new(struct bt_declaration *declaration,
- struct definition_scope *parent_scope,
- GQuark field_name, int index,
- const char *root_name)
-{
- struct declaration_float *float_declaration =
- container_of(declaration, struct declaration_float, p);
- struct definition_float *_float;
- struct bt_definition *tmp;
-
- _float = g_new(struct definition_float, 1);
- bt_declaration_ref(&float_declaration->p);
- _float->p.declaration = declaration;
- _float->declaration = float_declaration;
- _float->p.scope = bt_new_definition_scope(parent_scope, field_name, root_name);
- _float->p.path = bt_new_definition_path(parent_scope, field_name, root_name);
- if (float_declaration->byte_order == LITTLE_ENDIAN) {
- tmp = float_declaration->mantissa->p.definition_new(&float_declaration->mantissa->p,
- _float->p.scope, g_quark_from_string("mantissa"), 0, NULL);
- _float->mantissa = container_of(tmp, struct definition_integer, p);
- tmp = float_declaration->exp->p.definition_new(&float_declaration->exp->p,
- _float->p.scope, g_quark_from_string("exp"), 1, NULL);
- _float->exp = container_of(tmp, struct definition_integer, p);
- tmp = float_declaration->sign->p.definition_new(&float_declaration->sign->p,
- _float->p.scope, g_quark_from_string("sign"), 2, NULL);
- _float->sign = container_of(tmp, struct definition_integer, p);
- } else {
- tmp = float_declaration->sign->p.definition_new(&float_declaration->sign->p,
- _float->p.scope, g_quark_from_string("sign"), 0, NULL);
- _float->sign = container_of(tmp, struct definition_integer, p);
- tmp = float_declaration->exp->p.definition_new(&float_declaration->exp->p,
- _float->p.scope, g_quark_from_string("exp"), 1, NULL);
- _float->exp = container_of(tmp, struct definition_integer, p);
- tmp = float_declaration->mantissa->p.definition_new(&float_declaration->mantissa->p,
- _float->p.scope, g_quark_from_string("mantissa"), 2, NULL);
- _float->mantissa = container_of(tmp, struct definition_integer, p);
- }
- _float->p.ref = 1;
- /*
- * Use INT_MAX order to ensure that all fields of the parent
- * scope are seen as being prior to this scope.
- */
- _float->p.index = root_name ? INT_MAX : index;
- _float->p.name = field_name;
- _float->value = 0.0;
- if (parent_scope) {
- int ret;
-
- ret = bt_register_field_definition(field_name, &_float->p,
- parent_scope);
- assert(!ret);
- }
- return &_float->p;
-}
-
-static
-void _float_definition_free(struct bt_definition *definition)
-{
- struct definition_float *_float =
- container_of(definition, struct definition_float, p);
-
- bt_definition_unref(&_float->sign->p);
- bt_definition_unref(&_float->exp->p);
- bt_definition_unref(&_float->mantissa->p);
- bt_free_definition_scope(_float->p.scope);
- bt_declaration_unref(_float->p.declaration);
- g_free(_float);
-}
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