gdb/testsuite/gdb.base/bitfields.exp

   1 # Copyright 1992-2013 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 this program.  If not, see <http://www.gnu.org/licenses/>.
  15
  16 # This file was written by Fred Fish. (fnf@cygnus.com)
  17
  18
  19 set testfile "bitfields"
  20 set srcfile ${testfile}.c
  21 set binfile ${objdir}/${subdir}/${testfile}
  22 if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
  23     untested bitfields.exp
  24     return -1
  25 }
  26
  27 #
  28 # Test bitfield locating and uniqueness.
  29 # For each member, set that member to 1 and verify that the member (and only
  30 # that member) is 1, then reset it back to 0.
  31 #
  32
  33 proc bitfield_uniqueness {} {
  34     global decimal
  35     global hex
  36     global gdb_prompt
  37     global srcfile
  38
  39     if { ! [runto break1] } {
  40         gdb_suppress_tests;
  41     }
  42
  43     if [gdb_test "print flags" ".*uc = 1 .*, s1 = 0, u1 = 0, s2 = 0, u2 = 0, s3 = 0, u3 = 0, s9 = 0, u9 = 0, sc = 0.*"] {
  44         gdb_suppress_tests;
  45     }
  46     if [gdb_test "cont" "Break.*break1 \\(\\) at .*$srcfile:$decimal.*" "continuing to break1 #1"] {
  47         gdb_suppress_tests;
  48     }
  49     # Note that we check for s1 as either 1 or -1, so that failure to
  50     # treat it correctly as a signed 1bit field (values 0 or -1) while
  51     # printing its value does not cause a spurious failure.  We do the
  52     # signedness preservation test later.
  53     if [gdb_test "print flags" ".*uc = 0 .*, s1 = (1|-1), u1 = 0, s2 = 0, u2 = 0, s3 = 0, u3 = 0, s9 = 0, u9 = 0, sc = 0.*" "bitfield uniqueness (s1)"] {
  54         gdb_suppress_tests;
  55     }
  56     if [gdb_test "cont" "Break.*break1 \\(\\) at .*$srcfile:$decimal.*" "continuing to break1 #2"] {
  57         gdb_suppress_tests;
  58     }
  59     if [gdb_test "print flags" ".*uc = 0 .*, s1 = 0, u1 = 1, s2 = 0, u2 = 0, s3 = 0, u3 = 0, s9 = 0, u9 = 0, sc = 0.*" "bitfield uniqueness (u1)"] {
  60         gdb_suppress_tests;
  61     }
  62     if [gdb_test "cont" "Break.*break1 \\(\\) at .*$srcfile:$decimal.*" "continuing to break1 #3"] {
  63         gdb_suppress_tests;
  64     }
  65     if [gdb_test "print flags" ".*uc = 0 .*, s1 = 0, u1 = 0, s2 = 1, u2 = 0, s3 = 0, u3 = 0, s9 = 0, u9 = 0, sc = 0.*" "bitfield uniqueness (s2)"] {
  66         gdb_suppress_tests;
  67     }
  68     if [gdb_test "cont" "Break.*break1 \\(\\) at .*$srcfile:$decimal.*" "continuing to break1 #4"] {
  69         gdb_suppress_tests;
  70     }
  71     if [gdb_test "print flags" ".*uc = 0 .*, s1 = 0, u1 = 0, s2 = 0, u2 = 1, s3 = 0, u3 = 0, s9 = 0, u9 = 0, sc = 0.*" "bitfield uniqueness (u2)"] {
  72         gdb_suppress_tests;
  73     }
  74     if [gdb_test "cont" "Break.*break1 \\(\\) at .*$srcfile:$decimal.*" "continuing to break1 #5"] {
  75         gdb_suppress_tests;
  76     }
  77     if [gdb_test "print flags" ".*uc = 0 .*, s1 = 0, u1 = 0, s2 = 0, u2 = 0, s3 = 1, u3 = 0, s9 = 0, u9 = 0, sc = 0.*" "bitfield uniqueness (s3)"] {
  78         gdb_suppress_tests;
  79     }
  80     if [gdb_test "cont" "Break.*break1 \\(\\) at .*$srcfile:$decimal.*" "continuing to break1 #6"] {
  81         gdb_suppress_tests;
  82     }
  83     if [gdb_test "print flags" ".*uc = 0 .*, s1 = 0, u1 = 0, s2 = 0, u2 = 0, s3 = 0, u3 = 1, s9 = 0, u9 = 0, sc = 0.*" "bitfield uniqueness (u3)"] {
  84         gdb_suppress_tests
  85     }
  86     if [gdb_test "cont" "Break.*break1 \\(\\) at .*$srcfile:$decimal.*" "continuing to break1 #7"] {
  87         gdb_suppress_tests
  88     }
  89     if [gdb_test "print flags" ".*uc = 0 .*, s1 = 0, u1 = 0, s2 = 0, u2 = 0, s3 = 0, u3 = 0, s9 = 1, u9 = 0, sc = 0.*" "bitfield uniqueness (s9)"] {
  90         gdb_suppress_tests
  91     }
  92     if [gdb_test "cont" "Break.*break1 \\(\\) at .*$srcfile:$decimal.*" "continuing to break1 #8"] {
  93         gdb_suppress_tests
  94     }
  95     if [gdb_test "print flags" ".*uc = 0 .*, s1 = 0, u1 = 0, s2 = 0, u2 = 0, s3 = 0, u3 = 0, s9 = 0, u9 = 1, sc = 0.*" "bitfield uniqueness (u9)"] {
  96         gdb_suppress_tests
  97     }
  98     if [gdb_test "cont" "Break.*break1 \\(\\) at .*$srcfile:$decimal.*" "continuing to break1 #9"] {
  99         gdb_suppress_tests
 100     }
 101     if [gdb_test "print flags" ".*uc = 0 .*, s1 = 0, u1 = 0, s2 = 0, u2 = 0, s3 = 0, u3 = 0, s9 = 0, u9 = 0, sc = 1.*" "bitfield uniqueness (sc)"] {
 102         gdb_suppress_tests
 103     }
 104     # Hmmmm?
 105     gdb_stop_suppressing_tests;
 106 }
 107
 108
 109 #
 110 # Test bitfield containment.
 111 # Fill alternating fields with all 1's and verify that none of the bits
 112 # "bleed over" to the other fields.
 113 #
 114
 115 proc bitfield_containment {} {
 116     global decimal
 117     global hex
 118     global gdb_prompt
 119     global srcfile
 120
 121     delete_breakpoints
 122
 123     if { ![runto break2] } {
 124         gdb_suppress_tests
 125     }
 126
 127     if [gdb_test "print/x flags" "= {uc = 0xff, s1 = 0x0, u1 = 0x1, s2 = 0x0, u2 = 0x3, s3 = 0x0, u3 = 0x7, s9 = 0x0, u9 = 0x1ff, sc = 0x0}" "bitfield containment #1"] {
 128         gdb_suppress_tests
 129     }
 130
 131     if [gdb_test "cont" "Break.*break2 \\(\\) at .*$srcfile:$decimal.*" "continuing to break2"] {
 132         gdb_suppress_tests
 133     }
 134
 135     # If program is compiled with Sun CC, then these print out as their
 136     # actual sizes; if compiled with gcc, they print out as 0xffffffff
 137     # (which strikes me as bogus, but accept it at least for now).
 138     if [gdb_test "print/x flags" "= {uc = 0x0, s1 = 0x(1|f*), u1 = 0x0, s2 = 0x(3|f*), u2 = 0x0, s3 = 0x(7|f*), u3 = 0x0, s9 = 0x(1ff|f*), u9 = 0x0, sc = 0xff}" "bitfield containment #2"] {
 139         gdb_suppress_tests
 140     }
 141     gdb_stop_suppressing_tests;
 142 }
 143
 144 # Test unsigned bitfields for unsignedness and range.
 145 # Fill the unsigned fields with the maximum positive value and verify that
 146 # the values are printed correctly.
 147
 148 proc bitfield_unsignedness {} {
 149     global decimal
 150     global hex
 151     global gdb_prompt
 152     global srcfile
 153
 154     delete_breakpoints
 155
 156     if { ![runto break3] } {
 157         gdb_suppress_tests
 158     }
 159
 160     if [gdb_test "print flags" ".*uc = 0 .*, s1 = 0, u1 = 1, s2 = 0, u2 = 3, s3 = 0, u3 = 7, s9 = 0, u9 = 511, sc = 0.*" "unsigned bitfield ranges"] {
 161         gdb_suppress_tests
 162     }
 163     gdb_stop_suppressing_tests;
 164 }
 165
 166 #
 167 # Test signed bitfields for signedness and range.
 168 # Fill the signed fields with the maximum positive value, then the maximally
 169 # negative value, then -1, and verify in each case that the values are
 170 # printed correctly.
 171 #
 172
 173 proc bitfield_signedness {} {
 174     global decimal
 175     global hex
 176     global gdb_prompt
 177     global srcfile
 178
 179     delete_breakpoints
 180
 181     if { ! [runto break4] } {
 182         gdb_suppress_tests
 183     }
 184
 185     if [gdb_test "print flags" "= {uc = 0 .*, s1 = 0, u1 = 0, s2 = 1, u2 = 0, s3 = 3, u3 = 0, s9 = 255, u9 = 0, sc = 0 .*}" "signed bitfields, max positive values"] {
 186         gdb_suppress_tests
 187     }
 188
 189     if [gdb_test "cont" "Break.*break4 \\(\\) at .*$srcfile:$decimal.*" "continuing to break4 #1"] {
 190         gdb_suppress_tests
 191     }
 192
 193     # Determine if the target has signed bitfields so we can xfail the
 194     # the signed bitfield tests if it doesn't.
 195     gdb_test_multiple "print i" "determining signed-ness of bitfields" {
 196         -re ".* = -256.*$gdb_prompt $" {
 197             pass "determining signed-ness of bitfields"
 198         }
 199         -re ".* = 256.*$gdb_prompt $" {
 200             pass "determining signed-ness of bitfields"
 201             setup_xfail "*-*-*"
 202         }
 203         -re ".*$gdb_prompt $" {
 204             fail "determining signed-ness of bitfields"
 205             gdb_suppress_tests
 206         }
 207         default {
 208             fail "determining signed-ness of bitfields" ;
 209             gdb_suppress_tests;
 210         }
 211     }
 212
 213     if [gdb_test "print flags" ".*uc = 0 .*, s1 = -1, u1 = 0, s2 = -2, u2 = 0, s3 = -4, u3 = 0, s9 = -256, u9 = 0, sc = 0.*" "signed bitfields, max negative values"] {
 214         gdb_suppress_tests
 215     }
 216
 217     if [gdb_test "cont" "Break.*break4 \\(\\) at .*$srcfile:$decimal.*" "continuing to break4 #2"] {
 218         gdb_suppress_tests
 219     }
 220
 221     if [gdb_test "print flags" ".*uc = 0 .*, s1 = -1, u1 = 0, s2 = -1, u2 = 0, s3 = -1, u3 = 0, s9 = -1, u9 = 0, sc = 0.*" "signed bitfields with -1"] {
 222         gdb_suppress_tests
 223     }
 224     # Hmmmm???
 225     gdb_stop_suppressing_tests;
 226 }
 227
 228 # Test bitfields at non-zero offsets in a struct.
 229
 230 proc bitfield_at_offset {} {
 231     global decimal
 232     global hex
 233     global gdb_prompt
 234     global srcfile
 235
 236     gdb_breakpoint break5
 237     if [gdb_test "cont" "Break.*break5 \\(\\) at .*$srcfile:$decimal.*" "continuing to break5"] {
 238         return
 239     }
 240
 241     set one ".*uc = 0 .*, s1 = 0, u1 = 0, s2 = 0, u2 = 0, s3 = 0, u3 = 5, s9 = 0, u9 = 0, sc = 0.*"
 242     set two ".*uc = 0 .*, s1 = 0, u1 = 0, s2 = 0, u2 = 0, s3 = 0, u3 = 3, s9 = 0, u9 = 0, sc = 0.*"
 243     gdb_test "print container" "$one$two" "distinct bitfields in container"
 244     gdb_test "print container.one.u3" ".* = 5"
 245     gdb_test "print container.two.u3" ".* = 3"
 246 }
 247
 248 gdb_start
 249 gdb_reinitialize_dir $srcdir/$subdir
 250 gdb_load ${binfile}
 251
 252 gdb_test_no_output "set print sevenbit-strings"
 253
 254 bitfield_uniqueness
 255 bitfield_containment
 256 bitfield_unsignedness
 257 bitfield_signedness
 258 bitfield_at_offset