gdb/testsuite/gdb.base/bitfields.exp

   1 # Copyright 1992, 1994, 1995, 1997, 2007, 2008, 2009, 2010
   2 # Free Software Foundation, Inc.
   3
   4 # This program is free software; you can redistribute it and/or modify
   5 # it under the terms of the GNU General Public License as published by
   6 # the Free Software Foundation; either version 3 of the License, or
   7 # (at your option) any later version.
   8 #
   9 # This program is distributed in the hope that it will be useful,
  10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 # GNU General Public License for more details.
  13 #
  14 # You should have received a copy of the GNU General Public License
  15 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16
  17 # This file was written by Fred Fish. (fnf@cygnus.com)
  18
  19 if $tracelevel then {
  20         strace $tracelevel
  21 }
  22
  23
  24 set testfile "bitfields"
  25 set srcfile ${testfile}.c
  26 set binfile ${objdir}/${subdir}/${testfile}
  27 if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
  28     untested bitfields.exp
  29     return -1
  30 }
  31
  32 #
  33 # Test bitfield locating and uniqueness.
  34 # For each member, set that member to 1 and verify that the member (and only
  35 # that member) is 1, then reset it back to 0.
  36 #
  37
  38 proc bitfield_uniqueness {} {
  39     global decimal
  40     global hex
  41     global gdb_prompt
  42     global srcfile
  43
  44     if { ! [runto break1] } {
  45         gdb_suppress_tests;
  46     }
  47
  48     if [gdb_test "print flags" ".*uc = 1 .*, s1 = 0, u1 = 0, s2 = 0, u2 = 0, s3 = 0, u3 = 0, s9 = 0, u9 = 0, sc = 0.*"] {
  49         gdb_suppress_tests;
  50     }
  51     if [gdb_test "cont" "Break.*break1 \\(\\) at .*$srcfile:$decimal.*" "continuing to break1 #1"] {
  52         gdb_suppress_tests;
  53     }
  54     # Note that we check for s1 as either 1 or -1, so that failure to
  55     # treat it correctly as a signed 1bit field (values 0 or -1) while
  56     # printing its value does not cause a spurious failure.  We do the
  57     # signedness preservation test later.
  58     if [gdb_test "print flags" ".*uc = 0 .*, s1 = (1|-1), u1 = 0, s2 = 0, u2 = 0, s3 = 0, u3 = 0, s9 = 0, u9 = 0, sc = 0.*" "bitfield uniqueness (s1)"] {
  59         gdb_suppress_tests;
  60     }
  61     if [gdb_test "cont" "Break.*break1 \\(\\) at .*$srcfile:$decimal.*" "continuing to break1 #2"] {
  62         gdb_suppress_tests;
  63     }
  64     if [gdb_test "print flags" ".*uc = 0 .*, s1 = 0, u1 = 1, s2 = 0, u2 = 0, s3 = 0, u3 = 0, s9 = 0, u9 = 0, sc = 0.*" "bitfield uniqueness (u1)"] {
  65         gdb_suppress_tests;
  66     }
  67     if [gdb_test "cont" "Break.*break1 \\(\\) at .*$srcfile:$decimal.*" "continuing to break1 #3"] {
  68         gdb_suppress_tests;
  69     }
  70     if [gdb_test "print flags" ".*uc = 0 .*, s1 = 0, u1 = 0, s2 = 1, u2 = 0, s3 = 0, u3 = 0, s9 = 0, u9 = 0, sc = 0.*" "bitfield uniqueness (s2)"] {
  71         gdb_suppress_tests;
  72     }
  73     if [gdb_test "cont" "Break.*break1 \\(\\) at .*$srcfile:$decimal.*" "continuing to break1 #4"] {
  74         gdb_suppress_tests;
  75     }
  76     if [gdb_test "print flags" ".*uc = 0 .*, s1 = 0, u1 = 0, s2 = 0, u2 = 1, s3 = 0, u3 = 0, s9 = 0, u9 = 0, sc = 0.*" "bitfield uniqueness (u2)"] {
  77         gdb_suppress_tests;
  78     }
  79     if [gdb_test "cont" "Break.*break1 \\(\\) at .*$srcfile:$decimal.*" "continuing to break1 #5"] {
  80         gdb_suppress_tests;
  81     }
  82     if [gdb_test "print flags" ".*uc = 0 .*, s1 = 0, u1 = 0, s2 = 0, u2 = 0, s3 = 1, u3 = 0, s9 = 0, u9 = 0, sc = 0.*" "bitfield uniqueness (s3)"] {
  83         gdb_suppress_tests;
  84     }
  85     if [gdb_test "cont" "Break.*break1 \\(\\) at .*$srcfile:$decimal.*" "continuing to break1 #6"] {
  86         gdb_suppress_tests;
  87     }
  88     if [gdb_test "print flags" ".*uc = 0 .*, s1 = 0, u1 = 0, s2 = 0, u2 = 0, s3 = 0, u3 = 1, s9 = 0, u9 = 0, sc = 0.*" "bitfield uniqueness (u3)"] {
  89         gdb_suppress_tests
  90     }
  91     if [gdb_test "cont" "Break.*break1 \\(\\) at .*$srcfile:$decimal.*" "continuing to break1 #7"] {
  92         gdb_suppress_tests
  93     }
  94     if [gdb_test "print flags" ".*uc = 0 .*, s1 = 0, u1 = 0, s2 = 0, u2 = 0, s3 = 0, u3 = 0, s9 = 1, u9 = 0, sc = 0.*" "bitfield uniqueness (s9)"] {
  95         gdb_suppress_tests
  96     }
  97     if [gdb_test "cont" "Break.*break1 \\(\\) at .*$srcfile:$decimal.*" "continuing to break1 #8"] {
  98         gdb_suppress_tests
  99     }
 100     if [gdb_test "print flags" ".*uc = 0 .*, s1 = 0, u1 = 0, s2 = 0, u2 = 0, s3 = 0, u3 = 0, s9 = 0, u9 = 1, sc = 0.*" "bitfield uniqueness (u9)"] {
 101         gdb_suppress_tests
 102     }
 103     if [gdb_test "cont" "Break.*break1 \\(\\) at .*$srcfile:$decimal.*" "continuing to break1 #9"] {
 104         gdb_suppress_tests
 105     }
 106     if [gdb_test "print flags" ".*uc = 0 .*, s1 = 0, u1 = 0, s2 = 0, u2 = 0, s3 = 0, u3 = 0, s9 = 0, u9 = 0, sc = 1.*" "bitfield uniqueness (sc)"] {
 107         gdb_suppress_tests
 108     }
 109     # Hmmmm?
 110     gdb_stop_suppressing_tests;
 111 }
 112
 113
 114 #
 115 # Test bitfield containment.
 116 # Fill alternating fields with all 1's and verify that none of the bits
 117 # "bleed over" to the other fields.
 118 #
 119
 120 proc bitfield_containment {} {
 121     global decimal
 122     global hex
 123     global gdb_prompt
 124     global srcfile
 125
 126     delete_breakpoints
 127
 128     if { ![runto break2] } {
 129         gdb_suppress_tests
 130     }
 131
 132     if [gdb_test "print/x flags" "= {uc = 0xff, s1 = 0x0, u1 = 0x1, s2 = 0x0, u2 = 0x3, s3 = 0x0, u3 = 0x7, s9 = 0x0, u9 = 0x1ff, sc = 0x0}" "bitfield containment #1"] {
 133         gdb_suppress_tests
 134     }
 135
 136     if [gdb_test "cont" "Break.*break2 \\(\\) at .*$srcfile:$decimal.*" "continuing to break2"] {
 137         gdb_suppress_tests
 138     }
 139
 140     # If program is compiled with Sun CC, then these print out as their
 141     # actual sizes; if compiled with gcc, they print out as 0xffffffff
 142     # (which strikes me as bogus, but accept it at least for now).
 143     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"] {
 144         gdb_suppress_tests
 145     }
 146     gdb_stop_suppressing_tests;
 147 }
 148
 149 # Test unsigned bitfields for unsignedness and range.
 150 # Fill the unsigned fields with the maximum positive value and verify that
 151 # the values are printed correctly.
 152
 153 proc bitfield_unsignedness {} {
 154     global decimal
 155     global hex
 156     global gdb_prompt
 157     global srcfile
 158
 159     delete_breakpoints
 160
 161     if { ![runto break3] } {
 162         gdb_suppress_tests
 163     }
 164
 165     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"] {
 166         gdb_suppress_tests
 167     }
 168     gdb_stop_suppressing_tests;
 169 }
 170
 171 #
 172 # Test signed bitfields for signedness and range.
 173 # Fill the signed fields with the maximum positive value, then the maximally
 174 # negative value, then -1, and verify in each case that the values are
 175 # printed correctly.
 176 #
 177
 178 proc bitfield_signedness {} {
 179     global decimal
 180     global hex
 181     global gdb_prompt
 182     global srcfile
 183
 184     delete_breakpoints
 185
 186     if { ! [runto break4] } {
 187         gdb_suppress_tests
 188     }
 189
 190     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"] {
 191         gdb_suppress_tests
 192     }
 193
 194     if [gdb_test "cont" "Break.*break4 \\(\\) at .*$srcfile:$decimal.*" "continuing to break4 #1"] {
 195         gdb_suppress_tests
 196     }
 197
 198     # Determine if the target has signed bitfields so we can xfail the
 199     # the signed bitfield tests if it doesn't.
 200     send_gdb "print i\n"
 201     gdb_expect {
 202         -re ".* = -256.*$gdb_prompt $" {
 203             pass "determining signed-ness of bitfields"
 204         }
 205         -re ".* = 256.*$gdb_prompt $" {
 206             pass "determining signed-ness of bitfields"
 207             setup_xfail "*-*-*"
 208         }
 209         -re ".*$gdb_prompt $" {
 210             fail "determining signed-ness of bitfields"
 211             gdb_suppress_tests
 212         }
 213         default {
 214             fail "determining signed-ness of bitfields" ;
 215             gdb_suppress_tests;
 216         }
 217     }
 218
 219     if [gdb_test "print flags" ".*uc = 0 .*, s1 = -1, u1 = 0, s2 = -2, u2 = 0, s3 = -4, u3 = 0, s9 = -256, u9 = 0, sc = 0.*" "signed bitfields, max negative values"] {
 220         gdb_suppress_tests
 221     }
 222
 223     if [gdb_test "cont" "Break.*break4 \\(\\) at .*$srcfile:$decimal.*" "continuing to break4 #2"] {
 224         gdb_suppress_tests
 225     }
 226
 227     if [gdb_test "print flags" ".*uc = 0 .*, s1 = -1, u1 = 0, s2 = -1, u2 = 0, s3 = -1, u3 = 0, s9 = -1, u9 = 0, sc = 0.*" "signed bitfields with -1"] {
 228         gdb_suppress_tests
 229     }
 230     # Hmmmm???
 231     gdb_stop_suppressing_tests;
 232 }
 233
 234 # Test bitfields at non-zero offsets in a struct.
 235
 236 proc bitfield_at_offset {} {
 237     global decimal
 238     global hex
 239     global gdb_prompt
 240     global srcfile
 241
 242     gdb_breakpoint break5
 243     if [gdb_test "cont" "Break.*break5 \\(\\) at .*$srcfile:$decimal.*" "continuing to break5"] {
 244         return
 245     }
 246
 247     set one ".*uc = 0 .*, s1 = 0, u1 = 0, s2 = 0, u2 = 0, s3 = 0, u3 = 5, s9 = 0, u9 = 0, sc = 0.*"
 248     set two ".*uc = 0 .*, s1 = 0, u1 = 0, s2 = 0, u2 = 0, s3 = 0, u3 = 3, s9 = 0, u9 = 0, sc = 0.*"
 249     gdb_test "print container" "$one$two" "distinct bitfields in container"
 250     gdb_test "print container.one.u3" ".* = 5"
 251     gdb_test "print container.two.u3" ".* = 3"
 252 }
 253
 254 gdb_start
 255 gdb_reinitialize_dir $srcdir/$subdir
 256 gdb_load ${binfile}
 257
 258 send_gdb "set print sevenbit-strings\n" ; gdb_expect -re "$gdb_prompt $"
 259
 260 bitfield_uniqueness
 261 if [istarget "mips-idt-*"] then {
 262     # Restart because IDT/SIM runs out of file descriptors.
 263     gdb_exit
 264     gdb_start
 265     gdb_reinitialize_dir $srcdir/$subdir
 266     gdb_load ${binfile}
 267 }
 268 bitfield_containment
 269 if [istarget "mips-idt-*"] then {
 270     # Restart because IDT/SIM runs out of file descriptors.
 271     gdb_exit
 272     gdb_start
 273     gdb_reinitialize_dir $srcdir/$subdir
 274     gdb_load ${binfile}
 275 }
 276 bitfield_unsignedness
 277 if [istarget "mips-idt-*"] then {
 278     # Restart because IDT/SIM runs out of file descriptors.
 279     gdb_exit
 280     gdb_start
 281     gdb_reinitialize_dir $srcdir/$subdir
 282     gdb_load ${binfile}
 283 }
 284 bitfield_signedness
 285
 286 bitfield_at_offset