1#   Copyright (C) 1999-2013 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 3 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 GCC; see the file COPYING3.  If not see
15# <http://www.gnu.org/licenses/>.
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    global tool
28
29    if [info exists gcc_target_object_format_saved] {
30        verbose "gcc_target_object_format returning saved $gcc_target_object_format_saved" 2
31    } elseif { [istarget *-*-darwin*] } {
32	# Darwin doesn't necessarily have objdump, so hand-code it.
33	set gcc_target_object_format_saved mach-o
34    } elseif { [istarget hppa*-*-hpux*] } {
35	# HP-UX doesn't necessarily have objdump, so hand-code it.
36	if { [istarget hppa*64*-*-hpux*] } {
37	  set gcc_target_object_format_saved elf
38	} else {
39	  set gcc_target_object_format_saved som
40	}
41    } else {
42        set objdump_name [find_binutils_prog objdump]
43        set open_file [open objfmtst.c w]
44        puts $open_file "void foo(void) { }"
45        close $open_file
46
47        ${tool}_target_compile objfmtst.c objfmtst.o object ""
48	file delete objfmtst.c
49
50	set output [remote_exec host "$objdump_name" "--file-headers objfmtst.o"]
51	set output [lindex $output 1]
52
53        file delete objfmtst.o
54
55        if ![ regexp "file format (.*)arch" $output dummy objformat ]  {
56            verbose "Could not parse objdump output" 2
57            set gcc_target_object_format_saved unknown
58        } else {
59            switch -regexp $objformat {
60                elf          {
61                    set gcc_target_object_format_saved elf
62                }
63                ecoff        {
64                    set gcc_target_object_format_saved ecoff
65                }
66                coff         {
67                    set gcc_target_object_format_saved coff
68                }
69                a\.out       {
70                    set gcc_target_object_format_saved a.out
71                }
72                pe       {
73                    set gcc_target_object_format_saved pe
74                }
75                som          {
76                    set gcc_target_object_format_saved som
77                }
78                default      {
79                    verbose "Unknown file format: $objformat" 3
80                    set gcc_target_object_format_saved unknown
81                }
82            }
83
84            verbose "gcc_target_object_format returning $gcc_target_object_format_saved" 2
85        }
86    }
87
88    return $gcc_target_object_format_saved
89}
90