configure: check for elfutils (libelf and libdw) >= 0.154
[babeltrace.git] / types / float.c
index b12cf6be06d85241d5f9970e1f84ee1502d3f8b8..3b61f8faf0a3ec16b0b95b6544cd058cdabd008e 100644 (file)
@@ -3,7 +3,9 @@
  *
  * BabelTrace - Float Type Converter
  *
- * Copyright 2010, 2011 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ * 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
  *
  * 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 definition *_float_definition_new(struct declaration *declaration,
-                                  struct definition_scope *parent_scope);
+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 definition *definition);
-
-void float_copy(struct stream_pos *destp,
-               const struct format *fdest,
-               struct stream_pos *srcp,
-               const struct format *fsrc,
-               struct definition *definition)
-{
-       struct definition_float *_float =
-               container_of(definition, struct definition_float, p);
-       struct declaration_float *float_declaration = _float->declaration;
-
-       if (fsrc->float_copy == fdest->float_copy) {
-               fsrc->float_copy(destp, srcp, float_declaration);
-       } else {
-               double v;
-
-               v = fsrc->double_read(srcp, float_declaration);
-               fdest->double_write(destp, float_declaration, v);
-       }
-}
+void _float_definition_free(struct bt_definition *definition);
 
 static
-void _float_declaration_free(struct declaration *declaration)
+void _float_declaration_free(struct bt_declaration *declaration)
 {
        struct declaration_float *float_declaration =
                container_of(declaration, struct declaration_float, p);
 
-       declaration_unref(&float_declaration->exp->p);
-       declaration_unref(&float_declaration->mantissa->p);
-       declaration_unref(&float_declaration->sign->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 *
-       float_declaration_new(const char *name, size_t mantissa_len,
+       bt_float_declaration_new(size_t mantissa_len,
                       size_t exp_len, int byte_order, size_t alignment)
 {
        struct declaration_float *float_declaration;
-       struct declaration *declaration;
+       struct bt_declaration *declaration;
 
        float_declaration = g_new(struct declaration_float, 1);
        declaration = &float_declaration->p;
        declaration->id = CTF_TYPE_FLOAT;
-       declaration->name = g_quark_from_string(name);
        declaration->alignment = alignment;
-       declaration->copy = float_copy;
        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 = integer_declaration_new(NULL, 1,
-                                           byte_order, false, 1);
-       float_declaration->mantissa = integer_declaration_new(NULL, mantissa_len - 1,
-                                               byte_order, false, 1);
-       float_declaration->exp = integer_declaration_new(NULL, exp_len,
-                                          byte_order, true, 1);
+       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 definition *
-       _float_definition_new(struct declaration *declaration,
-                             struct definition_scope *parent_scope)
+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);
-       declaration_ref(&float_declaration->p);
-       _float->p.declaration= declaration;
-       _float->declaration= float_declaration;
+       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_static_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_static_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_static_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_static_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_static_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_static_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 definition *definition)
+void _float_definition_free(struct bt_definition *definition)
 {
        struct definition_float *_float =
                container_of(definition, struct definition_float, p);
 
-       declaration_unref(_float->p.declaration);
+       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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