gdb/testsuite/gdb.hp/foll-vfork.exp

   1 #   Copyright (C) 1997 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 if $tracelevel then {
  21         strace $tracelevel
  22         }
  23
  24 set prms_id 0
  25 set bug_id 0
  26
  27 # are we on a target board
  28 if ![isnative] then {
  29     return
  30 }
  31
  32 if {![istarget "hppa*-*-hpux10.30"] && ![istarget "hppa*-*-hpux11.*"]} {
  33     #setup_xfail "*-*.*"
  34     return 0
  35 }
  36
  37 set testfile "foll-vfork"
  38 set testfile2 "vforked-program"
  39 set srcfile ${testfile}.c
  40 set srcfile2 ${testfile2}.c
  41 set binfile ${objdir}/${subdir}/${testfile}
  42 set binfile2 ${objdir}/${subdir}/${testfile2}
  43
  44 # build the first test case
  45 #execute_anywhere "echo set prototypes 1 > ${objdir}/${subdir}/${testfile}.tmp"
  46 #if  { [compile "-g -DNO_PROTOTYPES ${srcdir}/${subdir}/${srcfile2} -o ${binfile2} "] != "" } {
  47 #  perror "Couldn't compile ${srcfile2}"
  48 #  return -1
  49 #}
  50
  51 if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
  52      gdb_suppress_entire_file "Testcase compile failed, so all tests in this file will automatically fail."
  53 }
  54
  55 #if  { [compile "-g ${srcdir}/${subdir}/${srcfile} -o ${binfile} "] != "" } {
  56 #    execute_anywhere "rm -f ${objdir}/${subdir}/${testfile}.tmp"
  57     # built the second test case since we can't use prototypes
  58 #    warning "Prototypes not supported, rebuilding with -DNO_PROTOTYPES"
  59 #    execute_anywhere "echo set prototypes 0 > ${objdir}/${subdir}/${testfile}.tmp"
  60 #    if  { [compile "-g -DNO_PROTOTYPES ${srcdir}/${subdir}/${srcfile} -o ${binfile} "] != "" } {
  61 #       perror "Couldn't compile ${testfile}.c"
  62 #       return -1
  63 #    }
  64 #}
  65
  66 if  { [gdb_compile "${srcdir}/${subdir}/${srcfile2}" "${binfile2}" executable {debug}] != "" } {
  67      gdb_suppress_entire_file "Testcase compile failed, so all tests in this file will automatically fail."
  68 }
  69
  70
  71 # Until "set follow-fork-mode" and "catch vfork" are implemented on
  72 # other targets...
  73 #
  74 if ![istarget "hppa*-hp-hpux*"] then {
  75    setup_xfail "*-*-*"
  76 }
  77
  78
  79 # A few of these tests require a little more time than the standard
  80 # timeout allows.
  81 set oldtimeout $timeout
  82 set timeout [expr "$timeout + 10"]
  83
  84 proc vfork_parent_follow_through_step {} {
  85    global gdb_prompt
  86
  87    send_gdb "set follow parent\n"
  88    gdb_expect {
  89       -re "$gdb_prompt $" {pass "set follow parent, vfork through step"}
  90       timeout         {fail "set follow parent, vfork through step"}
  91    }
  92    send_gdb "next\n"
  93    gdb_expect {
  94       -re "Detaching after fork from.*8.*$gdb_prompt $"\
  95                       {pass "vfork parent follow, through step"}
  96       -re "$gdb_prompt $" {fail "vfork parent follow, through step"}
  97       timeout         {fail "(timeout) vfork parent follow, through step" }
  98    }
  99    # The child has been detached; allow time for any output it might
 100    # generate to arrive, so that output doesn't get confused with
 101    # any gdb_expected debugger output from a subsequent testpoint.
 102    #
 103    exec sleep 1
 104 }
 105
 106 proc vfork_parent_follow_to_bp {} {
 107    global gdb_prompt
 108
 109    send_gdb "set follow parent\n"
 110    gdb_expect {
 111       -re "$gdb_prompt $" {pass "set follow parent, vfork to bp"}
 112       timeout         {fail "set follow parent, vfork to bp"}
 113    }
 114    send_gdb "break 13\n"
 115    gdb_expect {
 116       -re "$gdb_prompt $" {pass "break, vfork to bp"}
 117       timeout         {fail "break, vfork to bp"}
 118    }
 119    send_gdb "continue\n"
 120    gdb_expect {
 121       -re ".*Detaching after fork from process.*Breakpoint.*13.*$gdb_prompt $"\
 122                       {pass "vfork parent follow, to bp"}
 123       -re "$gdb_prompt $" {fail "vfork parent follow, to bp"}
 124       timeout         {fail "(timeout) vfork parent follow, to bp" }
 125    }
 126    # The child has been detached; allow time for any output it might
 127    # generate to arrive, so that output doesn't get confused with
 128    # any expected debugger output from a subsequent testpoint.
 129    #
 130    exec sleep 1
 131 }
 132
 133 proc vfork_and_exec_child_follow_to_main_bp {} {
 134    global gdb_prompt
 135    global binfile
 136
 137    send_gdb "set follow child\n"
 138    gdb_expect {
 139       -re "$gdb_prompt $" {pass "set follow child, vfork and exec to main bp"}
 140       timeout         {fail "set follow child, vfork and exec to main bp"}
 141    }
 142    send_gdb "continue\n"
 143    gdb_expect {
 144       -re "Detaching from program.*Attaching after fork to.*Executing new program.*Breakpoint.*vforked-program.c:5.*$gdb_prompt $"\
 145                       {pass "vfork and exec child follow, to main bp"}
 146       -re "$gdb_prompt $" {fail "vfork and exec child follow, to main bp"}
 147       timeout         {fail "(timeout) vfork and exec child follow, to main bp" }
 148    }
 149    # The parent has been detached; allow time for any output it might
 150    # generate to arrive, so that output doesn't get confused with
 151    # any gdb_expected debugger output from a subsequent testpoint.
 152    #
 153    exec sleep 1
 154
 155    # Explicitly kill this child, or a subsequent rerun actually runs
 156    # the exec'd child, not the original program...
 157    send_gdb "kill\n"
 158    gdb_expect {
 159       -re ".*Kill the program being debugged.*y or n. $" {
 160          send_gdb "y\n"
 161          send_gdb "file $binfile\n"
 162          gdb_expect {
 163             -re ".*Load new symbol table from.*y or n. $" {
 164                send_gdb "y\n"
 165                gdb_expect {
 166                   -re "Reading symbols from.*$gdb_prompt $" {}
 167                   timeout { fail "loading symbols (timeout)"; return }
 168                }
 169             }
 170             -re ".*gdb_prompt $" {}
 171             timeout { fail "loading symbols (timeout)"; return }
 172           }
 173       }
 174       -re ".*$gdb_prompt $" {}
 175       timeout { fail "killing inferior (timeout)" ; return }
 176     }
 177 }
 178
 179 proc vfork_and_exec_child_follow_through_step {} {
 180    global gdb_prompt
 181    global binfile
 182
 183 # This test cannot be performed prior to HP-UX 10.30, because ptrace-based
 184 # debugging of a vforking program basically doesn't allow the child to do
 185 # things like hit a breakpoint between a vfork and exec.  This means that
 186 # saying "set follow child; next" at a vfork() call won't work, because
 187 # the implementation of "next" sets a "step resume" breakpoint at the
 188 # return from the vfork(), which the child will hit on its way to exec'ing.
 189 #
 190    if { ![istarget "hppa*-*-hpux10.30"] && ![istarget "hppa*-*-hpux11.*"] } {
 191       verbose "vfork child-following next test ignored for non-hppa or pre-HP/UX-10.30 targets."
 192       return 0
 193    }
 194
 195    send_gdb "set follow child\n"
 196    gdb_expect {
 197       -re "$gdb_prompt $" {pass "set follow child, vfork and exec through step"}
 198       timeout         {fail "set follow child, vfork and exec through step"}
 199    }
 200    send_gdb "next\n"
 201    gdb_expect {
 202       -re "Detaching from program.*Attaching after fork to.*Executing new program.*Breakpoint.*vforked_program.c:5.*$gdb_prompt $"\
 203                       {pass "vfork and exec child follow, through step"}
 204       -re "$gdb_prompt $" {fail "vfork and exec child follow, through step"}
 205       timeout         {fail "(timeout) vfork and exec child follow, through step" }
 206    }
 207    # The parent has been detached; allow time for any output it might
 208    # generate to arrive, so that output doesn't get confused with
 209    # any expected debugger output from a subsequent testpoint.
 210    #
 211    exec sleep 1
 212
 213    # Explicitly kill this child, or a subsequent rerun actually runs
 214    # the exec'd child, not the original program...
 215    send_gdb "kill\n"
 216    gdb_expect {
 217       -re ".*Kill the program being debugged.*y or n. $" {
 218          send_gdb "y\n"
 219          send_gdb "file $binfile\n"
 220          gdb_expect {
 221             -re ".*Load new symbol table from.*y or n. $" {
 222                send_gdb "y\n"
 223                gdb_expect {
 224                   -re "Reading symbols from.*$gdb_prompt $" {}
 225                   timeout { fail "loading symbols (timeout)"; return }
 226                }
 227             }
 228             -re ".*gdb_prompt $" {}
 229             timeout { fail "loading symbols (timeout)"; return }
 230           }
 231       }
 232       -re ".*$gdb_prompt $" {}
 233       timeout { fail "killing inferior (timeout)" ; return }
 234     }
 235 }
 236
 237 proc tcatch_vfork_then_parent_follow {} {
 238    global gdb_prompt
 239    global srcfile
 240
 241    send_gdb "set follow parent\n"
 242    gdb_expect {
 243       -re "$gdb_prompt $" {pass "set follow parent, tcatch vfork"}
 244       timeout         {fail "set follow parent, tcatch vfork"}
 245    }
 246    send_gdb "tcatch vfork\n"
 247    gdb_expect {
 248       -re "Catchpoint .*(vfork).*$gdb_prompt $"\
 249                       {pass "vfork parent follow, set tcatch vfork"}
 250       -re "$gdb_prompt $" {fail "vfork parent follow, set tcatch vfork"}
 251       timeout         {fail "(timeout) vfork parent follow, set tcatch vfork"}
 252    }
 253    send_gdb "continue\n"
 254 # HP-UX 10.20 seems to stop you in "vfork", while more recent HP-UXs
 255 # stop you in "_vfork".
 256    gdb_expect {
 257       -re "0x\[0-9a-fA-F\]*.*vfork.*$gdb_prompt $"\
 258                       {pass "vfork parent follow, tcatch vfork"}
 259       -re "0x\[0-9a-fA-F\]*.*_vfork.*$gdb_prompt $"\
 260                       {pass "vfork parent follow, tcatch vfork"}
 261       -re "$gdb_prompt $" {fail "vfork parent follow, tcatch vfork"}
 262       timeout         {fail "(timeout) vfork parent follow, tcatch vfork"}
 263    }
 264    send_gdb "finish\n"
 265    gdb_expect {
 266       -re "Run till exit from.*vfork.*0x\[0-9a-fA-F\]* in main .* at .*${srcfile}:7.*$gdb_prompt $"\
 267                       {pass "vfork parent follow, finish after tcatch vfork"}
 268       -re "$gdb_prompt $" {fail "vfork parent follow, finish after tcatch vfork"}
 269       timeout         {fail "(timeout) vfork parent follow, finish after tcatch vfork" }
 270    }
 271    # The child has been detached; allow time for any output it might
 272    # generate to arrive, so that output doesn't get confused with
 273    # any expected debugger output from a subsequent testpoint.
 274    #
 275    exec sleep 1
 276 }
 277
 278 proc tcatch_vfork_then_child_follow {} {
 279    global gdb_prompt
 280    global srcfile2
 281
 282    send_gdb "set follow child\n"
 283    gdb_expect {
 284       -re "$gdb_prompt $" {pass "set follow child, tcatch vfork"}
 285       timeout         {fail "set follow child, tcatch vfork"}
 286    }
 287    send_gdb "tcatch vfork\n"
 288    gdb_expect {
 289       -re "Catchpoint .*(vfork).*$gdb_prompt $"\
 290                       {pass "vfork child follow, set tcatch vfork"}
 291       -re "$gdb_prompt $" {fail "vfork child follow, set tcatch vfork"}
 292       timeout         {fail "(timeout) vfork child follow, set tcatch vfork"}
 293    }
 294    send_gdb "continue\n"
 295 # HP-UX 10.20 seems to stop you in "vfork", while more recent HP-UXs
 296 # stop you in "_vfork".
 297    gdb_expect {
 298       -re "0x\[0-9a-fA-F\]*.*vfork.*$gdb_prompt $"\
 299                       {pass "vfork child follow, tcatch vfork"}
 300       -re "0x\[0-9a-fA-F\]*.*_vfork.*$gdb_prompt $"\
 301                       {pass "vfork child follow, tcatch vfork"}
 302       -re "$gdb_prompt $" {fail "vfork child follow, tcatch vfork"}
 303       timeout         {fail "(timeout) vfork child follow, tcatch vfork"}
 304    }
 305    send_gdb "finish\n"
 306    gdb_expect {
 307       -re "Run till exit from.*vfork.*${srcfile2}:5.*$gdb_prompt $"\
 308                       {pass "vfork child follow, finish after tcatch vfork"}
 309       -re "$gdb_prompt $" {fail "vfork child follow, finish after tcatch vfork"}
 310       timeout         {fail "(timeout) vfork child follow, finish after tcatch vfork" }
 311    }
 312    # The parent has been detached; allow time for any output it might
 313    # generate to arrive, so that output doesn't get confused with
 314    # any expected debugger output from a subsequent testpoint.
 315    #
 316    exec sleep 1
 317 }
 318
 319 proc do_vfork_and_exec_tests {} {
 320    global gdb_prompt
 321
 322    # Try following the parent process by stepping through a call to
 323    # vfork.  Do this without catchpoints.
 324    if [runto_main] then { vfork_parent_follow_through_step }
 325
 326    # Try following the parent process by setting a breakpoint on the
 327    # other side of a vfork, and running to that point.  Do this
 328    # without catchpoints.
 329    if [runto_main] then { vfork_parent_follow_to_bp }
 330
 331    # Try following the child process by just continuing through the
 332    # vfork, and letting the parent's breakpoint on "main" be auto-
 333    # magically reset in the child.
 334    #
 335    if [runto_main] then { vfork_and_exec_child_follow_to_main_bp }
 336
 337    # Try following the child process by stepping through a call to
 338    # vfork.  The child also executes an exec.  Since the child cannot
 339    # be debugged until after it has exec'd, and since there's a bp on
 340    # "main" in the parent, and since the bp's for the parent are
 341    # recomputed in the exec'd child, the step through a vfork should
 342    # land us in the "main" for the exec'd child, too.
 343    #
 344    if [runto_main] then { vfork_and_exec_child_follow_through_step }
 345
 346    # Try catching a vfork, and stepping out to the parent.
 347    #
 348    if [runto_main] then { tcatch_vfork_then_parent_follow }
 349
 350    # Try catching a vfork, and stepping out to the child.
 351    #
 352    if [runto_main] then { tcatch_vfork_then_child_follow }
 353
 354    # Test the ability to follow both child and parent of a vfork.  Do
 355    # this without catchpoints.
 356    # ??rehrauer: NYI.  Will add testpoints here when implemented.
 357    #
 358
 359    # Test the ability to have the debugger ask the user at vfork-time
 360    # whether to follow the parent, child or both.  Do this without
 361    # catchpoints.
 362    # ??rehrauer: NYI.  Will add testpoints here when implemented.
 363    #
 364 }
 365
 366 # Start with a fresh gdb
 367
 368 gdb_exit
 369 gdb_start
 370 gdb_reinitialize_dir $srcdir/$subdir
 371 gdb_load ${binfile}
 372
 373
 374 # This is a test of gdb's ability to follow the parent or child
 375 # of a Unix vfork() system call.  (The child will subsequently
 376 # call a variant of a Unix exec() system call.)
 377 #
 378 do_vfork_and_exec_tests
 379
 380 set timeout $oldtimeout
 381 return 0