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#   Copyright 1997, 1999, 2007, 2008, 2009, 2010

#   Free Software Foundation, Inc.

# This program is free software; you can redistribute it and/or modify

# it under the terms of the GNU General Public License as published by

# the Free Software Foundation; either version 3 of the License, or

# (at your option) any later version.

#

# This program is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

# GNU General Public License for more details.

#

# You should have received a copy of the GNU General Public License

# along with this program.  If not, see .

if { [is_remote target] || ![isnative] } then {

    continue

}

set testfile "foll-exec"

set testfile2 "execd-prog"

set srcfile ${testfile}.c

set srcfile2 ${testfile2}.c

set binfile ${objdir}/${subdir}/${testfile}

set binfile2 ${objdir}/${subdir}/${testfile2}

# build the first test case

if  { [gdb_compile "${srcdir}/${subdir}/${srcfile2}" "${binfile2}" executable {debug}] != "" } {

     untested foll-exec.exp

     return -1

}

if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {

     untested foll-exec.exp

     return -1

}

# Until "catch exec" is implemented on other targets...

#

if {![istarget "hppa*-hp-hpux*"] && ![istarget "*-linux*"]} then {

    continue

}

proc zap_session {} {

   global gdb_prompt

   global binfile

   send_gdb "kill\n"

   gdb_expect {

     -re ".*Kill the program being debugged.*y or n. $" {

       send_gdb "y\n"

       send_gdb "file $binfile\n"

       gdb_expect {

         -re ".*Load new symbol table from.*y or n. $" {

           send_gdb "y\n"

           gdb_expect {

             -re "Reading symbols from.*$gdb_prompt $" {}

             timeout { fail "loading symbols (timeout)"; return }

           }

         }

         -re ".*gdb_prompt $" {}

         timeout { fail "loading symbols (timeout)"; return }

       }

    }

    -re ".*$gdb_prompt $" {}

    timeout { fail "killing inferior (timeout)" ; return }

   }

}

proc do_exec_tests {} {

   global gdb_prompt

   global binfile

   global srcfile

   global srcfile2

   global testfile

   global testfile2

   # Start the program running, and stop at main.

   #

   if ![runto_main] then {

     perror "Couldn't run ${testfile}"

     return

   }

   # Verify that the system supports "catch exec".

   gdb_test "catch exec" "Catchpoint \[0-9\]* \\(exec\\)" "insert first exec catchpoint"

   set has_exec_catchpoints 0

   gdb_test_multiple "continue" "continue to first exec catchpoint" {

     -re ".*Your system does not support exec catchpoints.*$gdb_prompt $" {

       unsupported "continue to first exec catchpoint"

     }

     -re ".*Catchpoint.*$gdb_prompt $" {

       set has_exec_catchpoints 1

       pass "continue to first exec catchpoint"

     }

   }

   if {$has_exec_catchpoints == 0} {

     unsupported "exec catchpoints"

     return

   }

   zap_session

   # Start the program running, and stop at main.

   #

   if ![runto_main] then {

     perror "Couldn't run ${testfile}"

     return

   }

   # Verify that we can see various global and local variables

   # in this program, and that they have expected values.  Some

   # of these variables are also declared in the program we'll

   # exec in a moment.

   #

   send_gdb "next 3\n"

   gdb_expect {

     -re "20.*execlp.*$gdb_prompt $"\

                     {pass "step to exec call"}

     -re "$gdb_prompt $" {fail "step to exec call"}

     timeout         {fail "(timeout) step to exec call"}

   }

   send_gdb "print global_i\n"

   gdb_expect {

     -re ".* = 100.*$gdb_prompt $"\

                     {pass "print follow-exec/global_i"}

     -re "$gdb_prompt $" {fail "print follow-exec/global_i"}

     timeout         {fail "(timeout) print follow-exec/global_i"}

   }

   send_gdb "print local_j\n"

   gdb_expect {

     -re ".* = 101.*$gdb_prompt $"\

                     {pass "print follow-exec/local_j"}

     -re "$gdb_prompt $" {fail "print follow-exec/local_j"}

     timeout         {fail "(timeout) print follow-exec/local_j"}

   }

   send_gdb "print local_k\n"

   gdb_expect {

     -re ".* = 102.*$gdb_prompt $"\

                     {pass "print follow-exec/local_k"}

     -re "$gdb_prompt $" {fail "print follow-exec/local_k"}

     timeout         {fail "(timeout) print follow-exec/local_k"}

   }

   # Try stepping through an execlp call, without catching it.

   # We should stop in execd-program, at its first statement.

   #

   send_gdb "next\n"

   gdb_expect {

     -re ".*xecuting new program: .*${testfile2}.*${srcfile2}:23.*int  local_j = argc;.*$gdb_prompt $"\

                     {pass "step through execlp call"}

     -re "$gdb_prompt $" {fail "step through execlp call"}

     timeout         {fail "(timeout) step through execlp call"}

   }

   # Verify that we can see the variables defined in the newly-exec'd

   # program, and CANNOT see those defined in the exec'ing program.

   #

   send_gdb "next\n"

   gdb_expect {

     -re "26.*printf.*$gdb_prompt $"\

                     {pass "step after execlp call"}

     -re "$gdb_prompt $" {fail "step after execlp call"}

     timeout         {fail "(timeout) step after execlp call"}

   }

   send_gdb "print global_i\n"

   gdb_expect {

     -re ".* = 0.*$gdb_prompt $"\

                     {pass "print execd-program/global_i (after execlp)"}

     -re "$gdb_prompt $" {fail "print execd-program/global_i (after execlp)"}

     timeout         {fail "(timeout) print execd-program/global_i (after execlp)"}

   }

   send_gdb "print local_j\n"

   gdb_expect {

     -re ".* = 2.*$gdb_prompt $"\

                     {pass "print execd-program/local_j (after execlp)"}

     -re "$gdb_prompt $" {fail "print execd-program/local_j (after execlp)"}

     timeout         {fail "(timeout) print execd-program/local_j (after execlp)"}

   }

   send_gdb "print local_k\n"

   gdb_expect {

     -re "No symbol \"local_k\" in current context.*$gdb_prompt $"\

                     {pass "print follow-exec/local_k (after execlp)"}

     -re "$gdb_prompt $" {fail "print follow-exec/local_k (after execlp)"}

     timeout         {fail "(timeout) print follow-exec/local_k (after execlp)"}

   }

   # Explicitly kill this program, or a subsequent rerun actually runs

   # the exec'd program, not the original program...

   zap_session

   # Start the program running, and stop at main.

   #

   if ![runto_main] then {

     perror "Couldn't run ${testfile} (2nd try)"

     return

   }

   # Verify that we can catch an exec event, and then continue

   # to follow through the exec.  (Since there's a breakpoint on

   # "main", it'll also be transferred to the exec'd program,

   # and we expect to stop there.)

   #

   send_gdb "catch exec\n"

   gdb_expect {

     -re "Catchpoint .*(exec).*$gdb_prompt $"\

                     {pass "set catch exec"}

     -re "$gdb_prompt $" {fail "set catch exec"}

     timeout         {fail "(timeout) set catch exec"}

   }

   # Verify that the catchpoint is mentioned in an "info breakpoints",

   # and further that the catchpoint mentions no program name.

   #

   set msg "info shows catchpoint without exec pathname"

   gdb_test_multiple "info breakpoints" $msg {

       -re ".*catchpoint.*keep y.*exec\[\n\r\]+$gdb_prompt $" {

           pass $msg

       }

   }

   # DTS CLLbs16760

   # PA64 doesn't know about $START$ in dld.sl at this point.  It should.

   # - Michael Coulter

   setup_xfail hppa2.0w-hp-hpux* CLLbs16760

   send_gdb "continue\n"

   gdb_expect {

     -re ".*xecuting new program:.*${testfile2}.*Catchpoint .*(exec\'d .*${testfile2}).*in .*$gdb_prompt $"\

                     {pass "hit catch exec"}

     -re "$gdb_prompt $" {fail "hit catch exec"}

     timeout         {fail "(timeout) hit catch exec"}

   }

   # DTS CLLbs16760

   # test gets out of sync if previous test fails.

   gdb_test "bt" ".*" "sync up after possible failure 1"

   gdb_test "bt" "#0.*" "sync up after possible failure 2"

   # Verify that the catchpoint is mentioned in an "info breakpoints",

   # and further that the catchpoint managed to capture the exec'd

   # program's name.

   #

   set msg "info shows catchpoint exec pathname"

   gdb_test_multiple "info breakpoints" $msg {

       -re ".*catchpoint.*keep y.*exec, program \".*${testfile2}\".*$gdb_prompt $" {

           pass $msg

       }

   }

   # Verify that we can continue from the catchpoint, and land in the

   # main of the newly-exec'd program.

   #

   send_gdb "continue\n"

   gdb_expect {

     -re ".*${srcfile2}:23.*$gdb_prompt $"\

                     {pass "continue after hit catch exec"}

     -re "$gdb_prompt $" {fail "continue after hit catch exec"}

     timeout         {fail "(timeout) continue after hit catch exec"}

   }

   # Explicitly kill this program, or a subsequent rerun actually runs

   # the exec'd program, not the original program...

   zap_session

   # Start the program running, and stop at main.

   #

   if ![runto_main] then {

     perror "Couldn't run ${testfile} (3rd try)"

     return

   }

   # Verify that we can follow through follow an execl()

   # call.  (We must jump around earlier exec* calls.)

   #

   send_gdb "tbreak 27\n"

   gdb_expect {

     -re "Temporary breakpoint .*file .*${srcfile}, line 27.*$gdb_prompt $"\

                     {pass "prepare to jump to execl call"}

     -re "$gdb_prompt $" {fail "prepare to jump to execl call"}

     timeout         {fail "(timeout) prepare to jump to execl call"}

   }

   send_gdb "jump 27\n"

   gdb_expect {

     -re "main.* at .*${srcfile}:27.*$gdb_prompt $"\

                     {pass "jump to execl call"}

     -re "$gdb_prompt $" {fail "jump to execl call"}

     timeout         {fail "(timeout) jump to execl call"}

   }

   # Note that stepping through an exec call causes the step-count

   # to be reset to zero.  I.e.: you may specify "next 2" at the

   # call, but you'll actually stop at the first breakpoint set in

   # the newly-exec'd program, not after the remaining step-count

   # reaches zero.

   #

   send_gdb "next 2\n"

   gdb_expect {

     -re ".*xecuting new program: .*${testfile2}.*${srcfile2}:23.*int  local_j = argc;.*$gdb_prompt $"\

                     {pass "step through execl call"}

     -re "$gdb_prompt $" {fail "step through execl call"}

     timeout         {fail "(timeout) step through execl call"}

   }

   send_gdb "next\n"

   gdb_expect {

     -re "26.*printf.*$gdb_prompt $"\

                     {pass "step after execl call"}

     -re "$gdb_prompt $" {fail "step after execl call"}

     timeout         {fail "(timeout) step after execl call"}

   }

   # Verify that we can print a local variable (which happens to be

   # assigned the value of main's argc).

   #

   send_gdb "print local_j\n"

   gdb_expect {

     -re ".* = 3.*$gdb_prompt $"\

                     {pass "print execd-program/local_j (after execl)"}

     -re "$gdb_prompt $" {fail "print execd-program/local_j (after execl)"}

     timeout         {fail "(timeout) print execd-program/local_j (after execl)"}

   }

   # Explicitly kill this program, or a subsequent rerun actually runs

   # the exec'd program, not the original program...

   zap_session

   # Start the program running, and stop at main.

   #

   if ![runto_main] then {

     perror "Couldn't run ${testfile} (4th try)"

     return

   }

   # Verify that we can follow through follow an execv()

   # call.  (We must jump around earlier exec* calls.)

   #

   send_gdb "tbreak 41\n"

   gdb_expect {

     -re "Temporary breakpoint .*file .*${srcfile}, line 41.*$gdb_prompt $"\

                     {pass "prepare to jump to execv call"}

     -re "$gdb_prompt $" {fail "prepare to jump to execv call"}

     timeout         {fail "(timeout) prepare to jump to execv call"}

   }

   send_gdb "jump 41\n"

   gdb_expect {

     -re "main.* at .*${srcfile}:41.*$gdb_prompt $"\

                     {pass "jump to execv call"}

     -re "$gdb_prompt $" {fail "jump to execv call"}

     timeout         {fail "(timeout) jump to execv call"}

   }

   send_gdb "next\n"

   gdb_expect {

     -re ".*xecuting new program: .*${testfile2}.*${srcfile2}:23.*int  local_j = argc;.*$gdb_prompt $"\

                     {pass "step through execv call"}

     -re "$gdb_prompt $" {fail "step through execv call"}

     timeout         {fail "(timeout) step through execv call"}

   }

   send_gdb "next\n"

   gdb_expect {

     -re "26.*printf.*$gdb_prompt $"\

                     {pass "step after execv call"}

     -re "$gdb_prompt $" {fail "step after execv call"}

     timeout         {fail "(timeout) step after execv call"}

   }

   # Verify that we can print a local variable (which happens to be

   # assigned the value of main's argc).

   #

   send_gdb "print local_j\n"

   gdb_expect {

     -re ".* = 2.*$gdb_prompt $"\

                     {pass "print execd-program/local_j (after execv)"}

     -re "$gdb_prompt $" {fail "print execd-program/local_j (after execv)"}

     timeout         {fail "(timeout) print execd-program/local_j (after execv)"}

   }

   # Explicitly kill this program, or a subsequent rerun actually runs

   # the exec'd program, not the original program...

   zap_session

   # Start the program running, and stop at main.

   #

   if ![runto_main] then {

     perror "Couldn't run ${testfile} (5th try)"

     return

   }

   # Verify that we can just continue and thereby follow through an

   # exec call.  (Since the breakpoint on "main" is reset, we should

   # just stop in main of the newly-exec'd program.)

   #

   send_gdb "continue\n"

   gdb_expect {

     -re ".*xecuting new program: .*${testfile2}.*${srcfile2}:23.*int  local_j = argc;.*$gdb_prompt $"\

                     {pass "continue through exec"}

     -re "$gdb_prompt $" {fail "continue through exec"}

     timeout         {fail "(timeout) continue through exec"}

   }

}

# Start with a fresh gdb

gdb_exit

gdb_start

gdb_reinitialize_dir $srcdir/$subdir

gdb_load ${binfile}

# This is a test of gdb's ability to follow a process through a

# Unix exec() system call.

#

do_exec_tests

return 0