gdb/testsuite/gdb.base/bitfields.exp

   1 # Copyright (C) 1992, 1994 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 2 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, write to the Free Software
  15 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  16
  17 # Please email any bugs, comments, and/or additions to this file to:
  18 # bug-gdb@prep.ai.mit.edu
  19
  20 # This file was written by Fred Fish. (fnf@cygnus.com)
  21
  22 if $tracelevel then {
  23         strace $tracelevel
  24 }
  25
  26 set prms_id 0
  27 set bug_id 0
  28
  29 set testfile "bitfields"
  30 set srcfile ${testfile}.c
  31 set binfile ${objdir}/${subdir}/${testfile}
  32 if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
  33     perror "Couldn't compile ${srcfile}"
  34     return -1
  35 }
  36
  37 #
  38 # Test bitfield locating and uniqueness.
  39 # For each member, set that member to 1 and verify that the member (and only
  40 # that member) is 1, then reset it back to 0.
  41 #
  42
  43 proc bitfield_uniqueness {} {
  44     global decimal
  45     global hex
  46     global prompt
  47     global srcfile
  48
  49     if [gdb_test "break break1" "Break.* at $hex: file .*$srcfile, line $decimal\\."] {
  50         return
  51     }
  52
  53     gdb_run_cmd
  54     expect {
  55         -re "Break.*break1 \\(\\) at .*$srcfile:$decimal.*$prompt $" {
  56             pass "running to break1"
  57         }
  58         timeout { fail "(timeout) running to break1"; return }
  59     }
  60
  61     if [gdb_test "print flags" ".*uc = 1 .*, s1 = 0, u1 = 0, s2 = 0, u2 = 0, s3 = 0, u3 = 0, s9 = 0, u9 = 0, sc = 0.*"] {
  62         return
  63     }
  64     if [gdb_test "cont" "Break.*break1 \\(\\) at .*$srcfile:$decimal.*" "continuing to break1 #1"] {
  65         return
  66     }
  67     # Note that we check for s1 as either 1 or -1, so that failure to
  68     # treat it correctly as a signed 1bit field (values 0 or -1) while
  69     # printing its value does not cause a spurious failure.  We do the
  70     # signedness preservation test later.
  71     if [gdb_test "print flags" ".*uc = 0 .*, s1 = (1|-1), u1 = 0, s2 = 0, u2 = 0, s3 = 0, u3 = 0, s9 = 0, u9 = 0, sc = 0.*" "bitfield uniqueness (s1)"] {
  72         return
  73     }
  74     if [gdb_test "cont" "Break.*break1 \\(\\) at .*$srcfile:$decimal.*" "continuing to break1 #2"] {
  75         return
  76     }
  77     if [gdb_test "print flags" ".*uc = 0 .*, s1 = 0, u1 = 1, s2 = 0, u2 = 0, s3 = 0, u3 = 0, s9 = 0, u9 = 0, sc = 0.*" "bitfield uniqueness (u1)"] {
  78         return
  79     }
  80     if [gdb_test "cont" "Break.*break1 \\(\\) at .*$srcfile:$decimal.*" "continuing to break1 #3"] {
  81         return
  82     }
  83     if [gdb_test "print flags" ".*uc = 0 .*, s1 = 0, u1 = 0, s2 = 1, u2 = 0, s3 = 0, u3 = 0, s9 = 0, u9 = 0, sc = 0.*" "bitfield uniqueness (s2)"] {
  84         return
  85     }
  86     if [gdb_test "cont" "Break.*break1 \\(\\) at .*$srcfile:$decimal.*" "continuing to break1 #4"] {
  87         return
  88     }
  89     if [gdb_test "print flags" ".*uc = 0 .*, s1 = 0, u1 = 0, s2 = 0, u2 = 1, s3 = 0, u3 = 0, s9 = 0, u9 = 0, sc = 0.*" "bitfield uniqueness (u2)"] {
  90         return
  91     }
  92     if [gdb_test "cont" "Break.*break1 \\(\\) at .*$srcfile:$decimal.*" "continuing to break1 #5"] {
  93         return
  94     }
  95     if [gdb_test "print flags" ".*uc = 0 .*, s1 = 0, u1 = 0, s2 = 0, u2 = 0, s3 = 1, u3 = 0, s9 = 0, u9 = 0, sc = 0.*" "bitfield uniqueness (s3)"] {
  96         return
  97     }
  98     if [gdb_test "cont" "Break.*break1 \\(\\) at .*$srcfile:$decimal.*" "continuing to break1 #6"] {
  99         return
 100     }
 101     if [gdb_test "print flags" ".*uc = 0 .*, s1 = 0, u1 = 0, s2 = 0, u2 = 0, s3 = 0, u3 = 1, s9 = 0, u9 = 0, sc = 0.*" "bitfield uniqueness (u3)"] {
 102         return
 103     }
 104     if [gdb_test "cont" "Break.*break1 \\(\\) at .*$srcfile:$decimal.*" "continuing to break1 #7"] {
 105         return
 106     }
 107     if [gdb_test "print flags" ".*uc = 0 .*, s1 = 0, u1 = 0, s2 = 0, u2 = 0, s3 = 0, u3 = 0, s9 = 1, u9 = 0, sc = 0.*" "bitfield uniqueness (s9)"] {
 108         return
 109     }
 110     if [gdb_test "cont" "Break.*break1 \\(\\) at .*$srcfile:$decimal.*" "continuing to break1 #8"] {
 111         return
 112     }
 113     if [gdb_test "print flags" ".*uc = 0 .*, s1 = 0, u1 = 0, s2 = 0, u2 = 0, s3 = 0, u3 = 0, s9 = 0, u9 = 1, sc = 0.*" "bitfield uniqueness (u9)"] {
 114         return
 115     }
 116     if [gdb_test "cont" "Break.*break1 \\(\\) at .*$srcfile:$decimal.*" "continuing to break1 #9"] {
 117         return
 118     }
 119     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)"] {
 120         return
 121     }
 122 }
 123
 124
 125 #
 126 # Test bitfield containment.
 127 # Fill alternating fields with all 1's and verify that none of the bits
 128 # "bleed over" to the other fields.
 129 #
 130
 131 proc bitfield_containment {} {
 132     global decimal
 133     global hex
 134     global prompt
 135     global srcfile
 136
 137     delete_breakpoints
 138
 139     if [gdb_test "break break2" "Break.* at $hex: file .*$srcfile, line $decimal\\." "setting breakpoint at break2"] {
 140         return
 141     }
 142
 143     gdb_run_cmd
 144     expect {
 145         -re "Break.*break2 \\(\\) at .*$srcfile:$decimal.*$prompt $" {
 146             pass "running to break2"
 147         }
 148         timeout { fail "(timeout) running to break2"; return }
 149     }
 150
 151     if [gdb_test "print/x flags" "= {uc = 0xff, s1 = 0x0, u1 = 0x1, s2 = 0x0, u2 = 0x3, s3 = 0x0, u3 = 0x7, s9 = 0x0, u9 = 0x1ff, sc = 0x0}" "bitfield containment #1"] {
 152         return
 153     }
 154
 155     if [gdb_test "cont" "Break.*break2 \\(\\) at .*$srcfile:$decimal.*" "continuing to break2"] {
 156         return
 157     }
 158
 159     # If program is compiled with Sun CC, then these print out as their
 160     # actual sizes; if compiled with gcc, they print out as 0xffffffff
 161     # (which strikes me as bogus, but accept it at least for now).
 162     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"] {
 163         return
 164     }
 165 }
 166
 167 # Test unsigned bitfields for unsignedness and range.
 168 # Fill the unsigned fields with the maximum positive value and verify that
 169 # the values are printed correctly.
 170
 171 proc bitfield_unsignedness {} {
 172     global decimal
 173     global hex
 174     global prompt
 175     global srcfile
 176
 177     delete_breakpoints
 178
 179     if [gdb_test "break break3" "Break.* at $hex: file .*$srcfile, line $decimal\\." "setting breakpoint at break3"] {
 180         return
 181     }
 182
 183     gdb_run_cmd
 184     expect {
 185         -re "Break.*break3 \\(\\) at .*$srcfile:$decimal.*$prompt $" {
 186             pass "running to break3"
 187         }
 188         timeout { fail "(timeout) running to break3"; return }
 189     }
 190
 191     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"] {
 192         return
 193     }
 194 }
 195
 196 #
 197 # Test signed bitfields for signedness and range.
 198 # Fill the signed fields with the maximum positive value, then the maximally
 199 # negative value, then -1, and verify in each case that the values are
 200 # printed correctly.
 201 #
 202
 203 proc bitfield_signedness {} {
 204     global decimal
 205     global hex
 206     global prompt
 207     global srcfile
 208
 209     delete_breakpoints
 210
 211     if [gdb_test "break break4" "Break.* at $hex: file .*$srcfile, line $decimal\\." "setting breakpoint at break4"] {
 212         return
 213     }
 214
 215     gdb_run_cmd
 216     expect {
 217         -re "Break.*break4 \\(\\) at .*$srcfile:$decimal.*$prompt $" {
 218             pass "running to break4"
 219         }
 220         timeout { fail "(timeout) running to break4"; return }
 221     }
 222
 223     if [gdb_test "print flags" "= {uc = 0 .*, s1 = 0, u1 = 0, s2 = 1, u2 = 0, s3 = 3, u3 = 0, s9 = 255, u9 = 0, sc = 0 .*}" "signed bitfields, max positive values"] {
 224         return
 225     }
 226
 227     if [gdb_test "cont" "Break.*break4 \\(\\) at .*$srcfile:$decimal.*" "continuing to break4 #1"] {
 228         return
 229     }
 230
 231     # Determine if the target has signed bitfields so we can xfail the
 232     # the signed bitfield tests if it doesn't.
 233     send_gdb "print i\n"
 234     expect {
 235         -re ".* = -256.*$prompt $" {
 236             pass "determining signed-ness of bitfields"
 237         }
 238         -re ".* = 256.*$prompt $" {
 239             pass "determining signed-ness of bitfields"
 240             setup_xfail "*-*-*"
 241         }
 242         -re ".*$prompt $" {
 243             fail "determining signed-ness of bitfields"
 244             return
 245         }
 246         default { fail "determining signed-ness of bitfields" ; return }
 247     }
 248
 249     if [gdb_test "print flags" ".*uc = 0 .*, s1 = -1, u1 = 0, s2 = -2, u2 = 0, s3 = -4, u3 = 0, s9 = -256, u9 = 0, sc = 0.*" "signed bitfields, max negative values"] {
 250         return
 251     }
 252
 253     if [gdb_test "cont" "Break.*break4 \\(\\) at .*$srcfile:$decimal.*" "continuing to break4 #2"] {
 254         return
 255     }
 256
 257     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"] {
 258         return
 259     }
 260 }
 261
 262 gdb_start
 263 gdb_reinitialize_dir $srcdir/$subdir
 264 gdb_load ${binfile}
 265
 266 send_gdb "set print sevenbit-strings\n" ; expect -re "$prompt $"
 267 bitfield_uniqueness
 268 if [istarget "mips-idt-*"] then {
 269     # Restart because IDT/SIM runs out of file descriptors.
 270     gdb_exit
 271     gdb_start
 272     gdb_reinitialize_dir $srcdir/$subdir
 273     gdb_load ${binfile}
 274 }
 275 bitfield_containment
 276 if [istarget "mips-idt-*"] then {
 277     # Restart because IDT/SIM runs out of file descriptors.
 278     gdb_exit
 279     gdb_start
 280     gdb_reinitialize_dir $srcdir/$subdir
 281     gdb_load ${binfile}
 282 }
 283 bitfield_unsignedness
 284 if [istarget "mips-idt-*"] then {
 285     # Restart because IDT/SIM runs out of file descriptors.
 286     gdb_exit
 287     gdb_start
 288     gdb_reinitialize_dir $srcdir/$subdir
 289     gdb_load ${binfile}
 290 }
 291 bitfield_signedness