1#   Copyright (C) 1999 Free Software Foundation, Inc.
2
3# This program is free software; you can redistribute it and/or modify
4# it under the terms of the GNU General Public License as published by
5# the Free Software Foundation; either version 2 of the License, or
6# (at your option) any later version.
7#
8# This program is distributed in the hope that it will be useful,
9# but WITHOUT ANY WARRANTY; without even the implied warranty of
10# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
11# GNU General Public License for more details.
12#
13# You should have received a copy of the GNU General Public License
14# along with this program; if not, write to the Free Software
15# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
16
17# Please email any bugs, comments, and/or additions to this file to:
18# gcc-bugs@gcc.gnu.org
19
20# This file defines a proc for determining the file format in use by the
21# target.  This is useful for tests that are only supported by certain file
22# formats.  This procedure is defined in a separate file so that it can be
23# included by other expect library files.
24
25proc gcc_target_object_format { } {
26    global gcc_target_object_format_saved
27
28    if [info exists gcc_target_object_format_saved] {
29        verbose "gcc_target_object_format returning saved $gcc_target_object_format_saved" 2
30    } else {
31        set objdump_name [find_binutils_prog objdump]
32        set open_file [open objfmtst.c w]
33        puts $open_file "void foo(void) { }"
34        close $open_file
35
36        gcc_target_compile objfmtst.c objfmtst.o object ""
37
38	catch {
39          set output [exec $objdump_name --file-headers objfmtst.o ]
40        } output
41
42        file delete objfmtst.o
43
44        if ![ regexp "file format (.*)arch" $output dummy objformat ]  {
45            verbose "Could not parse objdump output" 2
46            set gcc_target_object_format_saved unknown
47        } else {
48            switch -regexp $objformat {
49                elf          {
50                    set gcc_target_object_format_saved elf
51                }
52                ecoff        {
53                    set gcc_target_object_format_saved ecoff
54                }
55                coff         {
56                    set gcc_target_object_format_saved coff
57                }
58                a\.out       {
59                    set gcc_target_object_format_saved a.out
60                }
61                pe       {
62                    set gcc_target_object_format_saved pe
63                }
64                default      {
65                    verbose "Unknown file format: $objformat" 3
66                    set gcc_target_object_format_saved unknown
67                }
68            }
69
70            verbose "gcc_target_object_format returning $gcc_target_object_format_saved" 2
71        }
72    }
73
74    return $gcc_target_object_format_saved
75}
76