|
111
|
1 ------------------------------------------------------------------------------
|
|
|
2 -- --
|
|
|
3 -- GNAT COMPILER COMPONENTS --
|
|
|
4 -- --
|
|
|
5 -- B A C K _ E N D --
|
|
|
6 -- --
|
|
|
7 -- S p e c --
|
|
|
8 -- --
|
|
131
|
9 -- Copyright (C) 1992-2018, Free Software Foundation, Inc. --
|
|
111
|
10 -- --
|
|
|
11 -- GNAT is free software; you can redistribute it and/or modify it under --
|
|
|
12 -- terms of the GNU General Public License as published by the Free Soft- --
|
|
|
13 -- ware Foundation; either version 3, or (at your option) any later ver- --
|
|
|
14 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
|
|
|
15 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
|
|
|
16 -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
|
|
|
17 -- for more details. You should have received a copy of the GNU General --
|
|
|
18 -- Public License distributed with GNAT; see file COPYING3. If not, go to --
|
|
|
19 -- http://www.gnu.org/licenses for a complete copy of the license. --
|
|
|
20 -- --
|
|
|
21 -- GNAT was originally developed by the GNAT team at New York University. --
|
|
|
22 -- Extensive contributions were provided by Ada Core Technologies Inc. --
|
|
|
23 -- --
|
|
|
24 ------------------------------------------------------------------------------
|
|
|
25
|
|
|
26 -- Call the back end with all the information needed
|
|
|
27
|
|
|
28 -- Note: there are multiple bodies/variants of this package, so do not
|
|
|
29 -- modify this spec without coordination.
|
|
|
30
|
|
|
31 package Back_End is
|
|
|
32
|
|
|
33 type Back_End_Mode_Type is (
|
|
|
34 Generate_Object,
|
|
|
35 -- Full back end operation with object file generation
|
|
|
36
|
|
|
37 Declarations_Only,
|
|
|
38 -- Partial back end operation with no object file generation. In this
|
|
|
39 -- mode the only useful action performed by gigi is to process all
|
|
|
40 -- declarations issuing any error messages (in particular those to
|
|
|
41 -- do with rep clauses), and to back annotate representation info.
|
|
|
42
|
|
|
43 Skip);
|
|
|
44 -- Back end call is skipped (syntax only, or errors found)
|
|
|
45
|
|
|
46 pragma Convention (C, Back_End_Mode_Type);
|
|
|
47 for Back_End_Mode_Type use (0, 1, 2);
|
|
|
48
|
|
|
49 procedure Call_Back_End (Mode : Back_End_Mode_Type);
|
|
|
50 -- Call back end, i.e. make call to driver traversing the tree and
|
|
|
51 -- outputting code. This call is made with all tables locked. The back
|
|
|
52 -- end is responsible for unlocking any tables it may need to change,
|
|
|
53 -- and locking them again before returning.
|
|
|
54
|
|
|
55 procedure Scan_Compiler_Arguments;
|
|
|
56 -- Acquires command-line parameters passed to the compiler and processes
|
|
|
57 -- them. Calls Scan_Front_End_Switches for any front-end switches found.
|
|
|
58 --
|
|
|
59 -- The processing of arguments is private to the back end, since the way
|
|
|
60 -- of acquiring the arguments as well as the set of allowable back end
|
|
|
61 -- switches is different depending on the particular back end being used.
|
|
|
62 --
|
|
|
63 -- Any processed switches that influence the result of a compilation must
|
|
|
64 -- be added to the Compilation_Arguments table.
|
|
|
65 --
|
|
|
66 -- This routine is expected to set the following to True if necessary (the
|
|
|
67 -- default for all of these in Opt is False).
|
|
|
68 --
|
|
|
69 -- Opt.Disable_FE_Inline
|
|
|
70 -- Opt.Disable_FE_Inline_Always
|
|
|
71 -- Opt.Suppress_Control_Float_Optimizations
|
|
|
72 -- Opt.Generate_SCO
|
|
|
73 -- Opt.Generate_SCO_Instance_Table
|
|
|
74 -- Opt.Stack_Checking_Enabled
|
|
|
75 -- Opt.No_Stdinc
|
|
|
76 -- Opt.No_Stdlib
|
|
|
77
|
|
|
78 procedure Gen_Or_Update_Object_File;
|
|
|
79 -- Is used to generate the object file (if generated directly by gnat1), or
|
|
|
80 -- update it if it has already been generated by the call to Call_Back_End,
|
|
|
81 -- so that its timestamp is updated by the call.
|
|
|
82 --
|
|
|
83 -- This is a no-op with the gcc back-end (the object file is generated by
|
|
|
84 -- the assembler afterwards), but is needed for back-ends that directly
|
|
|
85 -- generate the final object file so that the object file's timestamp is
|
|
|
86 -- correct when compared with the corresponding ali file by gnatmake.
|
|
|
87
|
|
|
88 end Back_End;
|
