1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
|
-- Iir to ortho translator.
-- Copyright (C) 2002 - 2014 Tristan Gingold
--
-- This program is free software: you can redistribute it and/or modify
-- it under the terms of the GNU General Public License as published by
-- the Free Software Foundation, either version 2 of the License, or
-- (at your option) any later version.
--
-- This program is distributed in the hope that it will be useful,
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-- GNU General Public License for more details.
--
-- You should have received a copy of the GNU General Public License
-- along with this program. If not, see <gnu.org/licenses>.
package Trans.Chap4 is
-- Translate of a type declaration corresponds to the translation of
-- its definition.
procedure Translate_Type_Declaration (Decl : Iir);
procedure Translate_Anonymous_Type_Declaration (Decl : Iir);
procedure Translate_Subtype_Declaration (Decl : Iir_Subtype_Declaration);
procedure Translate_Bool_Type_Declaration (Decl : Iir_Type_Declaration);
-- Translation of declarations occurs in three phases:
-- 1) instance is built by putting objects in a record.
-- 2) subprograms are declared (using instance as the first parameter).
-- 3) subprogram bodies are translated.
--
-- In some cases (non nested packages), no instance is needed, thus the
-- first phase directly creates objects.
-- Phase 1 and phase 2 could theorically be merged, but the instance
-- pointer is generally created at the end of the phase 1.
--
-- Phase 2 and phase 3 were merged, but there is at least one case where it
-- is not possible: instantiation of a package INST in package
-- declaration PKG. Subprograms declared in INST must have access to the
-- INST body but also (indirectly) to the PKG body if they call a
-- subprogram declared in PKG (and passed as a subprogram interface). So
-- INST instance is the instance for PKG body. Therefore they must be
-- translated during PKG body translation (that's because INST body appears
-- at the instantiation point instead of the end of PKG body as described
-- in the LRM).
-- Translate declaration DECL, which must not be a subprogram
-- specification.
procedure Translate_Declaration (Decl : Iir);
-- Translate declarations, except subprograms spec and bodies.
procedure Translate_Declaration_Chain (Parent : Iir);
-- Create declarations for statements STMTS to support resume.
procedure Translate_Statements_Chain_State_Declaration
(Stmts : Iir; State_Scope : Var_Scope_Acc);
-- Translate subprograms in declaration chain of PARENT.
procedure Translate_Declaration_Chain_Subprograms
(Parent : Iir; What : Subprg_Translate_Kind);
-- Create subprograms for type/function conversion of signal
-- associations.
-- ENTITY is the entity instantiated, which can be either
-- an entity_declaration (for component configuration or direct
-- component instantiation), a component declaration (for a component
-- instantiation) or Null_Iir (for a block header).
-- BLOCK is the block/architecture containing the instantiation stmt.
-- STMT is either the instantiation stmt or the block header.
procedure Translate_Association_Subprograms
(Stmt : Iir; Block : Iir; Base_Block : Iir; Entity : Iir);
-- Elaborate In/Out_Conversion for ASSOC (signals only).
-- NDEST is the data structure to be registered.
procedure Elab_In_Conversion
(Assoc : Iir; Formal : Iir; Ndest : out Mnode);
procedure Elab_Out_Conversion
(Assoc : Iir; Formal : Iir; Ndest : out Mnode);
-- Create code to elaborate declarations.
-- NEED_FINAL is set when at least one declaration needs to be
-- finalized (eg: file declaration, protected objects).
procedure Elab_Declaration_Chain
(Parent : Iir; Need_Final : out Boolean);
-- Finalize declarations.
procedure Final_Declaration_Chain (Parent : Iir; Deallocate : Boolean);
-- Translate port or generic declarations of PARENT.
procedure Translate_Port_Chain (Parent : Iir);
procedure Translate_Generic_Chain (Parent : Iir);
-- Elaborate signal subtypes and allocate the storage for the object.
-- If HAS_COPY is true, do not allocate storage for values, as the values
-- will be directly referenced from the association.
procedure Elab_Signal_Declaration_Storage
(Decl : Iir; Has_Copy : Boolean);
-- Create signal object.
-- Note: SIG can be a signal sub-element (used when signals are
-- collapsed).
-- If CHECK_NULL is TRUE, create the signal only if it was not yet
-- created.
-- PARENT is used to link the signal to its parent by rti.
procedure Elab_Signal_Declaration_Object
(Sig : Iir; Parent : Iir; Check_Null : Boolean);
-- True of SIG has a direct driver.
function Has_Direct_Driver (Sig : Iir) return Boolean;
-- Allocate memory for direct driver if necessary.
procedure Elab_Direct_Driver_Declaration_Storage (Decl : Iir);
-- Generate code to create object OBJ and initialize it with value VAL.
procedure Elab_Object_Value (Obj : Iir; Value : Iir);
-- Allocate the storage for OBJ, if necessary.
procedure Elab_Object_Storage (Obj : Iir);
-- For a scalar or access type ATYPE, return the default initial value.
function Get_Scalar_Initial_Value (Atype : Iir) return O_Enode;
-- Initialize NAME/OBJ with VALUE.
procedure Elab_Object_Init
(Name : Mnode; Obj : Iir; Value : Iir; Alloc_Kind : Allocation_Kind);
-- Get the ortho type for an object of type TINFO.
function Get_Object_Type (Tinfo : Type_Info_Acc; Kind : Object_Kind_Type)
return O_Tnode;
-- Allocate (and build) a complex object of type OBJ_TYPE.
-- VAR is the object to be allocated.
procedure Allocate_Complex_Object (Obj_Type : Iir;
Alloc_Kind : Allocation_Kind;
Var : in out Mnode);
--function Translate_Interface_Declaration
-- (Decl : Iir; Subprg : Iir) return Tree;
-- Create a record that describe thes location of an IIR node and
-- returns the address of it.
function Get_Location (N : Iir) return O_Dnode;
-- Set default value to OBJ.
procedure Init_Object (Obj : Mnode; Obj_Type : Iir);
end Trans.Chap4;
|