1# Copyright (C) 2002-2020 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# This file was written by Jakub Jelinek, <jakub@redhat.com>
18# Based on compat.exp writte by Janis Johnson, <janis187@us.ibm.com>
19
20
21# Test interoperability of two compilers that follow the same ABI.
22#
23# Break simple tests into two pieces and see that they work when linked
24# together.  If an alternate compiler is specified then the two main
25# pieces of each test are compiled with different compilers.  The
26# alternate compiler must be installed, and is specified by defining
27# ALT_CC_UNDER_TEST in the environment.
28#
29# struct-layout-1 are generated structure layout interoperability tests,
30# so a generator first needs to be compiled on host, run there and the
31# generated tests then compiled on build and executed on target.
32
33if $tracelevel then {
34    strace $tracelevel
35}
36
37global GCC_UNDER_TEST
38global compat_save_gcc_under_test
39global compat_use_alt
40global compat_same_alt
41global compat_have_dfp
42
43# Load procedures from common libraries.
44load_lib standard.exp
45load_lib gcc.exp
46load_lib target-libpath.exp
47
48# Load the language-dependent compabibility support procedures.
49load_lib c-compat.exp
50
51# Load the language-independent compabibility support procedures.
52load_lib compat.exp
53
54gcc_init
55
56# Save variables for the C compiler under test, which each test will
57# change a couple of times.  This must be done after calling gcc-init.
58set compat_save_gcc_under_test $GCC_UNDER_TEST
59
60# Define an identifier for use with this suite to avoid name conflicts
61# with other compat tests running at the same time.
62set sid "c_compat"
63
64# Find out whether there is an alternate compiler to test.  If the
65# variable is defined but is set to "same", that means we use the same
66# compiler twice, which is meaningful if the two parts of COMPAT_OPTIONS
67# are different.
68set compat_use_alt 0
69set compat_same_alt 0
70
71if [info exists ALT_CC_UNDER_TEST] then {
72    set compat_use_alt 1
73    if [string match "same" $ALT_CC_UNDER_TEST] then {
74	set compat_same_alt 1
75    }
76}
77
78compat_setup_dfp
79
80if { $compat_have_dfp == 0 } {
81    set skip_dfp "-DSKIP_DECIMAL_FLOAT"
82} else {
83    set skip_dfp ""
84}
85
86set tstobjdir "$tmpdir/gcc.dg-struct-layout-1"
87set generator "$tmpdir/gcc.dg-struct-layout-1_generate.exe"
88
89set generator_src "$srcdir/$subdir/struct-layout-1_generate.c"
90set generator_src "$generator_src $srcdir/$subdir/generate-random.c"
91set generator_src "$generator_src $srcdir/$subdir/generate-random_r.c"
92set generator_cmd "-o $generator $skip_dfp $generator_src"
93
94# Temporarily switch to the environment for the host compiler.
95restore_ld_library_path_env_vars
96set status [remote_exec build "$HOSTCC $HOSTCFLAGS $generator_cmd"]
97set status [lindex $status 0]
98set_ld_library_path_env_vars
99
100if { $status == 0 } then {
101    file delete -force $tstobjdir
102    file mkdir $tstobjdir
103    set generator_args "-s $srcdir/$subdir -d $tstobjdir"
104    if [info exists env(RUN_ALL_COMPAT_TESTS) ] then {
105	set generator_args "$generator_args -n 15000"
106    }
107    if [check_effective_target_short_enums] then {
108	set generator_args "-e $generator_args"
109    }
110    set status [remote_exec host "$generator $generator_args"]
111    set status [lindex $status 0]
112    if { $status == 0 } then {
113	foreach src [lsort [find $tstobjdir *_main.c]] {
114	    # If we're only testing specific files and this isn't one
115	    # of them, skip it.
116	    if ![runtest_file_p $runtests $src] then {
117		continue
118	    }
119
120	    compat-execute $src $sid $compat_use_alt
121	}
122    } else {
123	warning "Could not execute gcc.dg/compat/struct-layout-1 generator"
124    }
125} else {
126    warning "Could not compile gcc.dg/compat/struct-layout-1 generator"
127}
128
129# Restore the original compiler under test.
130compat-use-tst-compiler
131