gdb/testsuite/gdb.reverse/i386-reverse.exp

   1 # Copyright 2009 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 is part of the gdb testsuite.
  17
  18 #
  19 # This test tests some i386 general instructions for reverse execution.
  20 #
  21
  22 if ![target_info exists gdb,can_reverse] {
  23     return
  24 }
  25
  26 if $tracelevel {
  27     strace $tracelevel
  28 }
  29
  30 set prms_id 0
  31 set bug_id 0
  32
  33 if ![istarget "i?86-*linux*"] then {
  34     verbose "Skipping i386 reverse tests."
  35     return
  36 }
  37
  38 set testfile "i386-reverse"
  39 set srcfile ${testfile}.c
  40 set binfile ${objdir}/${subdir}/${testfile}
  41
  42 # some targets have leading underscores on assembly symbols.
  43 # TODO: detect this automatically
  44 set additional_flags ""
  45 if [istarget "i?86-*-cygwin*"] then {
  46   set additional_flags "additional_flags=-DSYMBOL_PREFIX=\"_\""
  47 }
  48
  49 if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable [list debug $additional_flags]] != "" } {
  50     untested i386-reverse
  51     return -1
  52 }
  53
  54 set end_of_main          [gdb_get_line_number " end of main "]
  55 set end_of_inc_dec_tests [gdb_get_line_number " end inc_dec_tests "]
  56
  57 # Get things started.
  58
  59 gdb_exit
  60 gdb_start
  61 gdb_reinitialize_dir $srcdir/$subdir
  62 gdb_load ${binfile}
  63 runto main
  64
  65 if [target_info exists gdb,use_precord] {
  66     # Activate process record/replay
  67     gdb_test "record" "" "Turn on process record"
  68     # FIXME: command ought to acknowledge, so we can test if it succeeded.
  69 }
  70
  71 global hex
  72 global decimal
  73
  74 gdb_test "step" "inc .eax.*" "step to inc eax 1st time"
  75 send_gdb "info reg eax\n"
  76 gdb_expect {
  77     -re "eax *($hex)\t.*$gdb_prompt " {
  78         set preinc_eax $expect_out(1,string)
  79     }
  80 }
  81
  82 gdb_test "step" "inc .ecx.*" "step to inc ecx 1st time"
  83 send_gdb "info reg ecx\n"
  84 gdb_expect {
  85     -re "ecx *($hex)\t.*$gdb_prompt " {
  86         set preinc_ecx $expect_out(1,string)
  87     }
  88 }
  89
  90 gdb_test "step" "inc .edx.*" "step to inc edx 1st time"
  91 send_gdb "info reg edx\n"
  92 gdb_expect {
  93     -re "edx *($hex)\t.*$gdb_prompt " {
  94         set preinc_edx $expect_out(1,string)
  95     }
  96 }
  97
  98 gdb_test "step" "inc .ebx.*" "step to inc ebx 1st time"
  99 send_gdb "info reg ebx\n"
 100 gdb_expect {
 101     -re "ebx *($hex)\t.*$gdb_prompt " {
 102         set preinc_ebx $expect_out(1,string)
 103     }
 104 }
 105
 106 gdb_test "step" "inc .esp.*" "step to inc esp 1st time"
 107 send_gdb "info reg esp\n"
 108 gdb_expect {
 109     -re "esp *($hex)\t.*$gdb_prompt " {
 110         set preinc_esp $expect_out(1,string)
 111     }
 112 }
 113
 114 gdb_test "step" "inc .ebp.*" "step to inc ebp 1st time"
 115 send_gdb "info reg ebp\n"
 116 gdb_expect {
 117     -re "ebp *($hex)\t.*$gdb_prompt " {
 118         set preinc_ebp $expect_out(1,string)
 119     }
 120 }
 121
 122 gdb_test "step" "inc .esi.*" "step to inc esi 1st time"
 123 send_gdb "info reg esi\n"
 124 gdb_expect {
 125     -re "esi *($hex)\t.*$gdb_prompt " {
 126         set preinc_esi $expect_out(1,string)
 127     }
 128 }
 129
 130 gdb_test "step" "inc .edi.*" "step to inc edi 1st time"
 131 send_gdb "info reg edi\n"
 132 gdb_expect {
 133     -re "edi *($hex)\t.*$gdb_prompt " {
 134         set preinc_edi $expect_out(1,string)
 135     }
 136 }
 137
 138 gdb_test "step" "dec .eax.*" "step to dec eax 1st time"
 139 send_gdb "info reg eax\n"
 140 gdb_expect {
 141     -re "eax *($hex)\t.*$gdb_prompt " {
 142         set predec_eax $expect_out(1,string)
 143     }
 144 }
 145
 146 gdb_test "step" "dec .ecx.*" "step to dec ecx 1st time"
 147 send_gdb "info reg ecx\n"
 148 gdb_expect {
 149     -re "ecx *($hex)\t.*$gdb_prompt " {
 150         set predec_ecx $expect_out(1,string)
 151     }
 152 }
 153
 154 gdb_test "step" "dec .edx.*" "step to dec edx 1st time"
 155 send_gdb "info reg edx\n"
 156 gdb_expect {
 157     -re "edx *($hex)\t.*$gdb_prompt " {
 158         set predec_edx $expect_out(1,string)
 159     }
 160 }
 161
 162 gdb_test "step" "dec .ebx.*" "step to dec ebx 1st time"
 163 send_gdb "info reg ebx\n"
 164 gdb_expect {
 165     -re "ebx *($hex)\t.*$gdb_prompt " {
 166         set predec_ebx $expect_out(1,string)
 167     }
 168 }
 169
 170 gdb_test "step" "dec .esp.*" "step to dec esp 1st time"
 171 send_gdb "info reg esp\n"
 172 gdb_expect {
 173     -re "esp *($hex)\t.*$gdb_prompt " {
 174         set predec_esp $expect_out(1,string)
 175     }
 176 }
 177
 178 gdb_test "step" "dec .ebp.*" "step to dec ebp 1st time"
 179 send_gdb "info reg ebp\n"
 180 gdb_expect {
 181     -re "ebp *($hex)\t.*$gdb_prompt " {
 182         set predec_ebp $expect_out(1,string)
 183     }
 184 }
 185
 186 gdb_test "step" "dec .esi.*" "step to dec esi 1st time"
 187 send_gdb "info reg esi\n"
 188 gdb_expect {
 189     -re "esi *($hex)\t.*$gdb_prompt " {
 190         set predec_esi $expect_out(1,string)
 191     }
 192 }
 193
 194 gdb_test "step" "dec .edi.*" "step to dec edi 1st time"
 195 send_gdb "info reg edi\n"
 196 gdb_expect {
 197     -re "edi *($hex)\t.*$gdb_prompt " {
 198         set predec_edi $expect_out(1,string)
 199     }
 200 }
 201
 202 # gdb_test "step" "end inc_dec_tests .*" "step to end inc_dec_tests 1st time"
 203
 204 gdb_test "break $end_of_main" \
 205     "Breakpoint $decimal at .* line $end_of_main\." \
 206     "set breakpoint at end of main"
 207
 208 gdb_test "continue" \
 209     " end of main .*" \
 210     "continue to end of main"
 211
 212 gdb_test "break $end_of_inc_dec_tests" \
 213     "Breakpoint $decimal at .* line $end_of_inc_dec_tests\." \
 214     "set breakpoint at end of inc_dec_tests"
 215
 216 gdb_test "reverse-continue" \
 217     " end inc_dec_tests .*" \
 218     "reverse to inc_dec_tests"
 219
 220 #
 221 # Now reverse step, and check register values.
 222 #
 223
 224 gdb_test "info reg edi" "edi *$preinc_edi\t.*" "edi before reverse-dec"
 225 gdb_test "reverse-step" "dec .edi.*" "reverse-step to dec edi"
 226 gdb_test "info reg edi" "edi *$predec_edi\t.*" "edi after reverse-dec"
 227
 228 gdb_test "info reg esi" "esi *$preinc_esi\t.*" "esi before reverse-dec"
 229 gdb_test "reverse-step" "dec .esi.*" "reverse-step to dec esi"
 230 gdb_test "info reg esi" "esi *$predec_esi\t.*" "esi after reverse-dec"
 231
 232 gdb_test "info reg ebp" "ebp *$preinc_ebp\t.*" "ebp before reverse-dec"
 233 gdb_test "reverse-step" "dec .ebp.*" "reverse-step to dec ebp"
 234 gdb_test "info reg ebp" "ebp *$predec_ebp\t.*" "ebp after reverse-dec"
 235
 236 gdb_test "info reg esp" "esp *$preinc_esp\t.*" "esp before reverse-dec"
 237 gdb_test "reverse-step" "dec .esp.*" "reverse-step to dec esp"
 238 gdb_test "info reg esp" "esp *$predec_esp\t.*" "esp after reverse-dec"
 239
 240 gdb_test "info reg ebx" "ebx *$preinc_ebx\t.*" "ebx before reverse-dec"
 241 gdb_test "reverse-step" "dec .ebx.*" "reverse-step to dec ebx"
 242 gdb_test "info reg ebx" "ebx *$predec_ebx\t.*" "ebx after reverse-dec"
 243
 244 gdb_test "info reg edx" "edx *$preinc_edx\t.*" "edx before reverse-dec"
 245 gdb_test "reverse-step" "dec .edx.*" "reverse-step to dec edx"
 246 gdb_test "info reg edx" "edx *$predec_edx\t.*" "edx after reverse-dec"
 247
 248 gdb_test "info reg ecx" "ecx *$preinc_ecx\t.*" "ecx before reverse-dec"
 249 gdb_test "reverse-step" "dec .ecx.*" "reverse-step to dec ecx"
 250 gdb_test "info reg ecx" "ecx *$predec_ecx\t.*" "ecx after reverse-dec"
 251
 252 gdb_test "info reg eax" "eax *$preinc_eax\t.*" "eax before reverse-dec"
 253 gdb_test "reverse-step" "dec .eax.*" "reverse-step to dec eax"
 254 gdb_test "info reg eax" "eax *$predec_eax\t.*" "eax after reverse-dec"
 255
 256 gdb_test "info reg edi" "edi *$predec_edi\t.*" "edi before reverse-inc"
 257 gdb_test "reverse-step" "inc .edi.*" "reverse-step to inc edi"
 258 gdb_test "info reg edi" "edi *$preinc_edi\t.*" "edi after reverse-inc"
 259
 260 gdb_test "info reg esi" "esi *$predec_esi\t.*" "esi before reverse-inc"
 261 gdb_test "reverse-step" "inc .esi.*" "reverse-step to inc esi"
 262 gdb_test "info reg esi" "esi *$preinc_esi\t.*" "esi after reverse-inc"
 263
 264 gdb_test "info reg ebp" "ebp *$predec_ebp\t.*" "ebp before reverse-inc"
 265 gdb_test "reverse-step" "inc .ebp.*" "reverse-step to inc ebp"
 266 gdb_test "info reg ebp" "ebp *$preinc_ebp\t.*" "ebp after reverse-inc"
 267
 268 gdb_test "info reg esp" "esp *$predec_esp\t.*" "esp before reverse-inc"
 269 gdb_test "reverse-step" "inc .esp.*" "reverse-step to inc esp"
 270 gdb_test "info reg esp" "esp *$preinc_esp\t.*" "esp after reverse-inc"
 271
 272 gdb_test "info reg ebx" "ebx *$predec_ebx\t.*" "ebx before reverse-inc"
 273 gdb_test "reverse-step" "inc .ebx.*" "reverse-step to inc ebx"
 274 gdb_test "info reg ebx" "ebx *$preinc_ebx\t.*" "ebx after reverse-inc"
 275
 276 gdb_test "info reg edx" "edx *$predec_edx\t.*" "edx before reverse-inc"
 277 gdb_test "reverse-step" "inc .edx.*" "reverse-step to inc edx"
 278 gdb_test "info reg edx" "edx *$preinc_edx\t.*" "edx after reverse-inc"
 279
 280 gdb_test "info reg ecx" "ecx *$predec_ecx\t.*" "ecx before reverse-inc"
 281 gdb_test "reverse-step" "inc .ecx.*" "reverse-step to inc ecx"
 282 gdb_test "info reg ecx" "ecx *$preinc_ecx\t.*" "ecx after reverse-inc"
 283
 284 gdb_test "info reg eax" "eax *$predec_eax\t.*" "eax before reverse-inc"
 285 gdb_test "reverse-step" "inc .eax.*" "reverse-step to inc eax"
 286 gdb_test "info reg eax" "eax *$preinc_eax\t.*" "eax after reverse-inc"
 287
 288