gdb/testsuite/gdb.base/print-file-var.exp

   1 # Copyright 2012-2023 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 this program.  If not, see <http://www.gnu.org/licenses/>.  */
  15
  16 require allow_shlib_tests
  17
  18 proc test {hidden dlopen version_id_main lang} {
  19     global srcdir subdir
  20
  21     set main "print-file-var-main"
  22
  23     set suffix "-hidden$hidden-dlopen$dlopen-version_id_main$version_id_main"
  24
  25     # Normally we place different builds (C/C++) of a test into
  26     # subdirectories within the test build directory, however, using
  27     # gdb_load_shlib doesn't work well with this approach, so instead
  28     # add a language specific suffix to the binary and library names.
  29     if { $lang == "c" } {
  30         set suffix "${suffix}_c"
  31     } else {
  32         set suffix "${suffix}_cpp"
  33     }
  34
  35     set executable $main$suffix
  36
  37     set lib1 "print-file-var-lib1"
  38     set lib2 "print-file-var-lib2"
  39
  40     set libobj1 [standard_output_file ${lib1}$suffix.so]
  41     set libobj2 [standard_output_file ${lib2}$suffix.so]
  42
  43     set lib_opts { debug $lang }
  44     lappend lib_opts "additional_flags=-DHIDDEN=$hidden"
  45
  46     if { [gdb_compile_shlib ${srcdir}/${subdir}/${lib1}.c \
  47               ${libobj1} \
  48               ${lib_opts} ] != "" } {
  49         return -1
  50     }
  51     if { [gdb_compile_shlib ${srcdir}/${subdir}/${lib2}.c \
  52               ${libobj2} \
  53               ${lib_opts} ] != "" } {
  54         return -1
  55     }
  56
  57     set main_opts [list debug $lang]
  58     set link_opts [list debug shlib=${libobj1}]
  59
  60     set target_libobj2 [gdb_download_shlib $libobj2]
  61
  62     if {$dlopen} {
  63         lappend main_opts "additional_flags=-DSHLIB_NAME=\"$target_libobj2\""
  64         lappend link_opts "shlib_load"
  65     } else {
  66         lappend link_opts "shlib=${libobj2}"
  67     }
  68
  69     lappend main_opts "additional_flags=-DVERSION_ID_MAIN=$version_id_main"
  70
  71     if { [build_executable_from_specs ${main} \
  72               $executable \
  73               $link_opts \
  74               ${main}.c \
  75               $main_opts]
  76          != 0 } {
  77         return -1
  78     }
  79
  80     clean_restart $executable
  81     gdb_load_shlib $libobj1
  82     gdb_locate_shlib $libobj2
  83
  84     if ![runto_main] {
  85         return -1
  86     }
  87
  88     # Try printing "this_version_num" qualified with the name of the file
  89     # where the variables are defined.  There are three global variables
  90     # with that name, and some systems such as GNU/Linux merge them
  91     # into one single entity, while some other systems such as Windows
  92     # keep them separate.  In the first situation, we have to verify
  93     # that GDB does not randomly select the wrong instance, even when
  94     # a specific filename is used to qualified the lookup.  And in the
  95     # second case, we have to verify that GDB does select the instance
  96     # defined in the given filename.
  97     #
  98     # To avoid adding target-specific code in this testcase, the program
  99     # sets three local variables named 'vm', 'v1' and 'v2' with the value of
 100     # our global variables.  This allows us to compare the value that
 101     # GDB returns for each query against the actual value seen by
 102     # the program itself.
 103
 104     # Get past the initialization of the v* variables.
 105
 106     set bp_location \
 107         [gdb_get_line_number "STOP" "${main}.c"]
 108     gdb_test "break $main.c:$bp_location" \
 109         "Breakpoint \[0-9\]+ at 0x\[0-9a-fA-F\]+: .*" \
 110         "breakpoint at STOP marker"
 111
 112     gdb_test "continue" \
 113         "Breakpoint \[0-9\]+, main \\(\\) at.*STOP.*" \
 114         "continue to STOP marker"
 115
 116     # Now check the value of this_version_id in all of
 117     # print-file-var-main.c, print-file-var-lib1.c and
 118     # print-file-var-lib2.c.
 119
 120     # Compare the values of $sym1 and $sym2.
 121     proc compare {sym1 sym2} {
 122         with_test_prefix "sym1=$sym1,sym2=$sym2" {
 123             # Done this way instead of comparing the symbols with "print $sym1
 124             # == sym2" in GDB directly so that the values of the symbols end
 125             # up visible in the logs, for debug purposes.
 126             set vsym1 [get_integer_valueof $sym1 -1]
 127             set vsym2 [get_integer_valueof $sym2 -1]
 128             gdb_assert {$vsym1 == $vsym2} "$sym1 == $sym2"
 129         }
 130     }
 131
 132     if $version_id_main {
 133         compare "'print-file-var-main.c'::this_version_id" "vm"
 134         compare "this_version_id" "vm"
 135     }
 136
 137     compare "'print-file-var-lib1.c'::this_version_id" "v1"
 138     compare "'print-file-var-lib2.c'::this_version_id" "v2"
 139 }
 140
 141 # Only test C++ if we are able.  Always use C.
 142 set lang_list {c}
 143 if {[allow_cplus_tests]} {
 144     lappend lang_list c++
 145 }
 146
 147 foreach_with_prefix lang $lang_list {
 148     foreach_with_prefix hidden {0 1} {
 149         foreach_with_prefix dlopen {0 1} {
 150             foreach_with_prefix version_id_main {0 1} {
 151                 test $hidden $dlopen $version_id_main $lang
 152             }
 153         }
 154     }
 155 }