gdb/testsuite/gdb.base/bitfields.exp

   1 # Copyright 1992-2016 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 standard_testfile
  20
  21 if {[prepare_for_testing $testfile.exp $testfile $srcfile debug]} {
  22     untested $testfile.exp
  23     return -1
  24 }
  25
  26 #
  27 # Test bitfield locating and uniqueness.
  28 # For each member, set that member to 1 and verify that the member (and only
  29 # that member) is 1, then reset it back to 0.
  30 #
  31
  32 proc bitfield_uniqueness {} {
  33     global decimal
  34     global hex
  35     global gdb_prompt
  36     global srcfile
  37
  38     if { ! [runto break1] } {
  39         gdb_suppress_tests
  40     }
  41
  42     if [gdb_test "print flags" ".*uc = 1 .*, s1 = 0, u1 = 0, s2 = 0, u2 = 0, s3 = 0, u3 = 0, s9 = 0, u9 = 0, sc = 0.*"] {
  43         gdb_suppress_tests
  44     }
  45     if [gdb_test "cont" "Break.*break1 \\(\\) at .*$srcfile:$decimal.*" "continuing to break1 #1"] {
  46         gdb_suppress_tests
  47     }
  48     # Note that we check for s1 as either 1 or -1, so that failure to
  49     # treat it correctly as a signed 1bit field (values 0 or -1) while
  50     # printing its value does not cause a spurious failure.  We do the
  51     # signedness preservation test later.
  52     if [gdb_test "print flags" ".*uc = 0 .*, s1 = (1|-1), u1 = 0, s2 = 0, u2 = 0, s3 = 0, u3 = 0, s9 = 0, u9 = 0, sc = 0.*" "bitfield uniqueness (s1)"] {
  53         gdb_suppress_tests
  54     }
  55     if [gdb_test "cont" "Break.*break1 \\(\\) at .*$srcfile:$decimal.*" "continuing to break1 #2"] {
  56         gdb_suppress_tests
  57     }
  58     if [gdb_test "print flags" ".*uc = 0 .*, s1 = 0, u1 = 1, s2 = 0, u2 = 0, s3 = 0, u3 = 0, s9 = 0, u9 = 0, sc = 0.*" "bitfield uniqueness (u1)"] {
  59         gdb_suppress_tests
  60     }
  61     if [gdb_test "cont" "Break.*break1 \\(\\) at .*$srcfile:$decimal.*" "continuing to break1 #3"] {
  62         gdb_suppress_tests
  63     }
  64     if [gdb_test "print flags" ".*uc = 0 .*, s1 = 0, u1 = 0, s2 = 1, u2 = 0, s3 = 0, u3 = 0, s9 = 0, u9 = 0, sc = 0.*" "bitfield uniqueness (s2)"] {
  65         gdb_suppress_tests
  66     }
  67     if [gdb_test "cont" "Break.*break1 \\(\\) at .*$srcfile:$decimal.*" "continuing to break1 #4"] {
  68         gdb_suppress_tests
  69     }
  70     if [gdb_test "print flags" ".*uc = 0 .*, s1 = 0, u1 = 0, s2 = 0, u2 = 1, s3 = 0, u3 = 0, s9 = 0, u9 = 0, sc = 0.*" "bitfield uniqueness (u2)"] {
  71         gdb_suppress_tests
  72     }
  73     if [gdb_test "cont" "Break.*break1 \\(\\) at .*$srcfile:$decimal.*" "continuing to break1 #5"] {
  74         gdb_suppress_tests
  75     }
  76     if [gdb_test "print flags" ".*uc = 0 .*, s1 = 0, u1 = 0, s2 = 0, u2 = 0, s3 = 1, u3 = 0, s9 = 0, u9 = 0, sc = 0.*" "bitfield uniqueness (s3)"] {
  77         gdb_suppress_tests
  78     }
  79     if [gdb_test "cont" "Break.*break1 \\(\\) at .*$srcfile:$decimal.*" "continuing to break1 #6"] {
  80         gdb_suppress_tests
  81     }
  82     if [gdb_test "print flags" ".*uc = 0 .*, s1 = 0, u1 = 0, s2 = 0, u2 = 0, s3 = 0, u3 = 1, s9 = 0, u9 = 0, sc = 0.*" "bitfield uniqueness (u3)"] {
  83         gdb_suppress_tests
  84     }
  85     if [gdb_test "cont" "Break.*break1 \\(\\) at .*$srcfile:$decimal.*" "continuing to break1 #7"] {
  86         gdb_suppress_tests
  87     }
  88     if [gdb_test "print flags" ".*uc = 0 .*, s1 = 0, u1 = 0, s2 = 0, u2 = 0, s3 = 0, u3 = 0, s9 = 1, u9 = 0, sc = 0.*" "bitfield uniqueness (s9)"] {
  89         gdb_suppress_tests
  90     }
  91     if [gdb_test "cont" "Break.*break1 \\(\\) at .*$srcfile:$decimal.*" "continuing to break1 #8"] {
  92         gdb_suppress_tests
  93     }
  94     if [gdb_test "print flags" ".*uc = 0 .*, s1 = 0, u1 = 0, s2 = 0, u2 = 0, s3 = 0, u3 = 0, s9 = 0, u9 = 1, sc = 0.*" "bitfield uniqueness (u9)"] {
  95         gdb_suppress_tests
  96     }
  97     if [gdb_test "cont" "Break.*break1 \\(\\) at .*$srcfile:$decimal.*" "continuing to break1 #9"] {
  98         gdb_suppress_tests
  99     }
 100     if [gdb_test "print flags" ".*uc = 0 .*, s1 = 0, u1 = 0, s2 = 0, u2 = 0, s3 = 0, u3 = 0, s9 = 0, u9 = 0, sc = 1.*" "bitfield uniqueness (sc)"] {
 101         gdb_suppress_tests
 102     }
 103     # Hmmmm?
 104     gdb_stop_suppressing_tests
 105 }
 106
 107
 108 #
 109 # Test bitfield containment.
 110 # Fill alternating fields with all 1's and verify that none of the bits
 111 # "bleed over" to the other fields.
 112 #
 113
 114 proc bitfield_containment {} {
 115     global decimal
 116     global hex
 117     global gdb_prompt
 118     global srcfile
 119
 120     delete_breakpoints
 121
 122     if { ![runto break2] } {
 123         gdb_suppress_tests
 124     }
 125
 126     if [gdb_test "print/x flags" "= {uc = 0xff, s1 = 0x0, u1 = 0x1, s2 = 0x0, u2 = 0x3, s3 = 0x0, u3 = 0x7, s9 = 0x0, u9 = 0x1ff, sc = 0x0}" "bitfield containment #1"] {
 127         gdb_suppress_tests
 128     }
 129
 130     if [gdb_test "cont" "Break.*break2 \\(\\) at .*$srcfile:$decimal.*" "continuing to break2"] {
 131         gdb_suppress_tests
 132     }
 133
 134     # If program is compiled with Sun CC, then these print out as their
 135     # actual sizes; if compiled with gcc, they print out as 0xffffffff
 136     # (which strikes me as bogus, but accept it at least for now).
 137     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"] {
 138         gdb_suppress_tests
 139     }
 140     gdb_stop_suppressing_tests
 141 }
 142
 143 # Test unsigned bitfields for unsignedness and range.
 144 # Fill the unsigned fields with the maximum positive value and verify that
 145 # the values are printed correctly.
 146
 147 proc bitfield_unsignedness {} {
 148     global decimal
 149     global hex
 150     global gdb_prompt
 151     global srcfile
 152
 153     delete_breakpoints
 154
 155     if { ![runto break3] } {
 156         gdb_suppress_tests
 157     }
 158
 159     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"] {
 160         gdb_suppress_tests
 161     }
 162     gdb_stop_suppressing_tests
 163 }
 164
 165 #
 166 # Test signed bitfields for signedness and range.
 167 # Fill the signed fields with the maximum positive value, then the maximally
 168 # negative value, then -1, and verify in each case that the values are
 169 # printed correctly.
 170 #
 171
 172 proc bitfield_signedness {} {
 173     global decimal
 174     global hex
 175     global gdb_prompt
 176     global srcfile
 177
 178     delete_breakpoints
 179
 180     if { ! [runto break4] } {
 181         gdb_suppress_tests
 182     }
 183
 184     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"] {
 185         gdb_suppress_tests
 186     }
 187
 188     if [gdb_test "cont" "Break.*break4 \\(\\) at .*$srcfile:$decimal.*" "continuing to break4 #1"] {
 189         gdb_suppress_tests
 190     }
 191
 192     # Determine if the target has signed bitfields so we can xfail the
 193     # the signed bitfield tests if it doesn't.
 194     gdb_test_multiple "print i" "determining signed-ness of bitfields" {
 195         -re ".* = -256.*$gdb_prompt $" {
 196             pass "determining signed-ness of bitfields"
 197         }
 198         -re ".* = 256.*$gdb_prompt $" {
 199             pass "determining signed-ness of bitfields"
 200             setup_xfail "*-*-*"
 201         }
 202         -re ".*$gdb_prompt $" {
 203             fail "determining signed-ness of bitfields"
 204             gdb_suppress_tests
 205         }
 206         default {
 207             fail "determining signed-ness of bitfields"
 208             gdb_suppress_tests
 209         }
 210     }
 211
 212     if [gdb_test "print flags" ".*uc = 0 .*, s1 = -1, u1 = 0, s2 = -2, u2 = 0, s3 = -4, u3 = 0, s9 = -256, u9 = 0, sc = 0.*" "signed bitfields, max negative values"] {
 213         gdb_suppress_tests
 214     }
 215
 216     if [gdb_test "cont" "Break.*break4 \\(\\) at .*$srcfile:$decimal.*" "continuing to break4 #2"] {
 217         gdb_suppress_tests
 218     }
 219
 220     if [gdb_test "print flags" ".*uc = 0 .*, s1 = -1, u1 = 0, s2 = -1, u2 = 0, s3 = -1, u3 = 0, s9 = -1, u9 = 0, sc = 0.*" "signed bitfields with -1"] {
 221         gdb_suppress_tests
 222     }
 223     # Hmmmm???
 224     gdb_stop_suppressing_tests
 225 }
 226
 227 # Test bitfields at non-zero offsets in a struct.
 228
 229 proc bitfield_at_offset {} {
 230     global decimal
 231     global hex
 232     global gdb_prompt
 233     global srcfile
 234
 235     gdb_breakpoint break5
 236     if [gdb_test "cont" "Break.*break5 \\(\\) at .*$srcfile:$decimal.*" "continuing to break5"] {
 237         return
 238     }
 239
 240     set one ".*uc = 0 .*, s1 = 0, u1 = 0, s2 = 0, u2 = 0, s3 = 0, u3 = 5, s9 = 0, u9 = 0, sc = 0.*"
 241     set two ".*uc = 0 .*, s1 = 0, u1 = 0, s2 = 0, u2 = 0, s3 = 0, u3 = 3, s9 = 0, u9 = 0, sc = 0.*"
 242     gdb_test "print container" "$one$two" "distinct bitfields in container"
 243     gdb_test "print container.one.u3" ".* = 5"
 244     gdb_test "print container.two.u3" ".* = 3"
 245 }
 246
 247 proc bitfield_internalvar {} {
 248     global gdb_prompt
 249
 250     # First, we create an internal var holding an instance of
 251     # the struct (zeroed out).
 252     gdb_test "set \$myvar = (struct internalvartest) \{0\}" "" \
 253       "set internal var"
 254
 255     # Now, we set the proper bits.
 256     gdb_test_no_output "set \$myvar.a = 0"
 257     gdb_test_no_output "set \$myvar.inner.b = 1"
 258     gdb_test_no_output "set \$myvar.inner.deep.c = 0"
 259     gdb_test_no_output "set \$myvar.inner.deep.d = -1"
 260     gdb_test_no_output "set \$myvar.inner.e = 1"
 261     gdb_test_no_output "set \$myvar.f = 1"
 262
 263     # Here comes the true testing.
 264     gdb_test "print \$myvar.a" "\\$\[0-9\]\+ = 0"
 265     gdb_test "print \$myvar.inner.b" "\\$\[0-9\]\+ = 1"
 266     gdb_test "print \$myvar.inner.deep.c" "\\$\[0-9\]\+ = 0"
 267     gdb_test "print \$myvar.inner.deep.d" "\\$\[0-9\]\+ = -1"
 268     gdb_test "print \$myvar.inner.e" "\\$\[0-9\]\+ = -1"
 269     gdb_test "print \$myvar.f" "\\$\[0-9\]\+ = -1"
 270 }
 271
 272 gdb_test_no_output "set print sevenbit-strings"
 273
 274 bitfield_uniqueness
 275 bitfield_containment
 276 bitfield_unsignedness
 277 bitfield_signedness
 278 bitfield_at_offset
 279 bitfield_internalvar