379 lines
13 KiB
Plaintext
379 lines
13 KiB
Plaintext
# Copyright 1997-2015 Free Software Foundation, Inc.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# This is a test of gdb's ability to follow a process through a
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# Unix exec() system call.
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# Until "catch exec" is implemented on other targets...
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#
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if { ![istarget "*-linux*"] } then {
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continue
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}
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standard_testfile foll-exec.c
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set testfile2 "execd-prog"
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set srcfile2 ${testfile2}.c
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set binfile2 [standard_output_file ${testfile2}]
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set compile_options debug
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set dirname [relative_filename [pwd] [file dirname $binfile]]
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lappend compile_options "additional_flags=-DBASEDIR=\"$dirname\""
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# build the first test case
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if { [gdb_compile "${srcdir}/${subdir}/${srcfile2}" "${binfile2}" executable $compile_options] != "" } {
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untested foll-exec.exp
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return -1
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}
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if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable $compile_options] != "" } {
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untested foll-exec.exp
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return -1
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}
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proc do_exec_tests {} {
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global binfile srcfile srcfile2 testfile testfile2
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global gdb_prompt
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# Start the program running, and stop at main.
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#
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if ![runto_main] then {
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fail "Couldn't run ${testfile}"
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return
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}
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# Verify that the system supports "catch exec".
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gdb_test "catch exec" "Catchpoint \[0-9\]* \\(exec\\)" "insert first exec catchpoint"
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set has_exec_catchpoints 0
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gdb_test_multiple "continue" "continue to first exec catchpoint" {
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-re ".*Your system does not support this type\r\nof catchpoint.*$gdb_prompt $" {
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unsupported "continue to first exec catchpoint"
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}
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-re ".*Catchpoint.*$gdb_prompt $" {
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set has_exec_catchpoints 1
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pass "continue to first exec catchpoint"
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}
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}
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if {$has_exec_catchpoints == 0} {
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unsupported "exec catchpoints"
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return
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}
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clean_restart $binfile
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# Start the program running, and stop at main.
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#
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if ![runto_main] then {
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fail "Couldn't run ${testfile}"
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return
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}
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# Verify that we can see various global and local variables
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# in this program, and that they have expected values. Some
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# of these variables are also declared in the program we'll
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# exec in a moment.
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#
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send_gdb "next 3\n"
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gdb_expect {
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-re "execlp \\(.*$gdb_prompt $"\
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{pass "step to exec call"}
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-re "$gdb_prompt $" {fail "step to exec call"}
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timeout {fail "(timeout) step to exec call"}
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}
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send_gdb "print global_i\n"
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gdb_expect {
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-re ".* = 100.*$gdb_prompt $"\
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{pass "print follow-exec/global_i"}
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-re "$gdb_prompt $" {fail "print follow-exec/global_i"}
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timeout {fail "(timeout) print follow-exec/global_i"}
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}
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send_gdb "print local_j\n"
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gdb_expect {
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-re ".* = 101.*$gdb_prompt $"\
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{pass "print follow-exec/local_j"}
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-re "$gdb_prompt $" {fail "print follow-exec/local_j"}
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timeout {fail "(timeout) print follow-exec/local_j"}
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}
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send_gdb "print local_k\n"
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gdb_expect {
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-re ".* = 102.*$gdb_prompt $"\
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{pass "print follow-exec/local_k"}
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-re "$gdb_prompt $" {fail "print follow-exec/local_k"}
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timeout {fail "(timeout) print follow-exec/local_k"}
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}
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# Try stepping through an execlp call, without catching it.
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# We should stop in execd-program, at its first statement.
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#
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set execd_line [gdb_get_line_number "after-exec" $srcfile2]
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send_gdb "next\n"
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gdb_expect {
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-re ".*xecuting new program: .*${testfile2}.*${srcfile2}:${execd_line}.*int local_j = argc;.*$gdb_prompt $"\
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{pass "step through execlp call"}
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-re "$gdb_prompt $" {fail "step through execlp call"}
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timeout {fail "(timeout) step through execlp call"}
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}
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# Verify that we can see the variables defined in the newly-exec'd
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# program, and CANNOT see those defined in the exec'ing program.
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#
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send_gdb "next\n"
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gdb_expect {
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-re "printf \\(.Hello .*$gdb_prompt $"\
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{pass "step after execlp call"}
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-re "$gdb_prompt $" {fail "step after execlp call"}
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timeout {fail "(timeout) step after execlp call"}
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}
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send_gdb "print global_i\n"
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gdb_expect {
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-re ".* = 0.*$gdb_prompt $"\
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{pass "print execd-program/global_i (after execlp)"}
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-re "$gdb_prompt $" {fail "print execd-program/global_i (after execlp)"}
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timeout {fail "(timeout) print execd-program/global_i (after execlp)"}
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}
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send_gdb "print local_j\n"
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gdb_expect {
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-re ".* = 2.*$gdb_prompt $"\
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{pass "print execd-program/local_j (after execlp)"}
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-re "$gdb_prompt $" {fail "print execd-program/local_j (after execlp)"}
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timeout {fail "(timeout) print execd-program/local_j (after execlp)"}
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}
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send_gdb "print local_k\n"
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gdb_expect {
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-re "No symbol \"local_k\" in current context.*$gdb_prompt $"\
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{pass "print follow-exec/local_k (after execlp)"}
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-re "$gdb_prompt $" {fail "print follow-exec/local_k (after execlp)"}
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timeout {fail "(timeout) print follow-exec/local_k (after execlp)"}
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}
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# Explicitly kill this program, or a subsequent rerun actually runs
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# the exec'd program, not the original program...
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clean_restart $binfile
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# Start the program running, and stop at main.
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#
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if ![runto_main] then {
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fail "Couldn't run ${testfile} (2nd try)"
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return
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}
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# Verify that we can catch an exec event, and then continue
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# to follow through the exec. (Since there's a breakpoint on
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# "main", it'll also be transferred to the exec'd program,
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# and we expect to stop there.)
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#
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send_gdb "catch exec\n"
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gdb_expect {
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-re "Catchpoint .*(exec).*$gdb_prompt $"\
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{pass "set catch exec"}
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-re "$gdb_prompt $" {fail "set catch exec"}
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timeout {fail "(timeout) set catch exec"}
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}
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# Verify that the catchpoint is mentioned in an "info breakpoints",
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# and further that the catchpoint mentions no program name.
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#
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set msg "info shows catchpoint without exec pathname"
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gdb_test_multiple "info breakpoints" $msg {
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-re ".*catchpoint.*keep y.*exec\[\n\r\]+$gdb_prompt $" {
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pass $msg
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}
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}
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send_gdb "continue\n"
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gdb_expect {
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-re ".*xecuting new program:.*${testfile2}.*Catchpoint .*(exec\'d .*${testfile2}).*in .*$gdb_prompt $"\
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{pass "hit catch exec"}
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-re "$gdb_prompt $" {fail "hit catch exec"}
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timeout {fail "(timeout) hit catch exec"}
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}
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# DTS CLLbs16760
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# test gets out of sync if previous test fails.
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gdb_test "bt" ".*" "sync up after possible failure 1"
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gdb_test "bt" "#0.*" "sync up after possible failure 2"
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# Verify that the catchpoint is mentioned in an "info breakpoints",
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# and further that the catchpoint managed to capture the exec'd
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# program's name.
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#
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set msg "info shows catchpoint exec pathname"
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gdb_test_multiple "info breakpoints" $msg {
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-re ".*catchpoint.*keep y.*exec, program \".*${testfile2}\".*$gdb_prompt $" {
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pass $msg
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}
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}
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# Verify that we can continue from the catchpoint, and land in the
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# main of the newly-exec'd program.
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#
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send_gdb "continue\n"
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gdb_expect {
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-re ".*${srcfile2}:${execd_line}.*$gdb_prompt $"\
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{pass "continue after hit catch exec"}
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-re "$gdb_prompt $" {fail "continue after hit catch exec"}
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timeout {fail "(timeout) continue after hit catch exec"}
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}
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# Explicitly kill this program, or a subsequent rerun actually runs
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# the exec'd program, not the original program...
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clean_restart $binfile
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# Start the program running, and stop at main.
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#
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if ![runto_main] then {
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fail "Couldn't run ${testfile} (3rd try)"
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return
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}
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# Verify that we can follow through follow an execl()
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# call. (We must jump around earlier exec* calls.)
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#
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set tbreak_line [gdb_get_line_number "tbreak-execl" $srcfile]
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send_gdb "tbreak ${tbreak_line}\n"
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gdb_expect {
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-re "Temporary breakpoint .*file .*${srcfile}, line ${tbreak_line}.*$gdb_prompt $"\
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{pass "prepare to jump to execl call"}
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-re "$gdb_prompt $" {fail "prepare to jump to execl call"}
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timeout {fail "(timeout) prepare to jump to execl call"}
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}
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send_gdb "jump ${tbreak_line}\n"
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gdb_expect {
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-re "main.* at .*${srcfile}:${tbreak_line}.*$gdb_prompt $"\
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{pass "jump to execl call"}
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-re "$gdb_prompt $" {fail "jump to execl call"}
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timeout {fail "(timeout) jump to execl call"}
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}
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# Note that stepping through an exec call causes the step-count
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# to be reset to zero. I.e.: you may specify "next 2" at the
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# call, but you'll actually stop at the first breakpoint set in
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# the newly-exec'd program, not after the remaining step-count
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# reaches zero.
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#
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send_gdb "next 2\n"
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gdb_expect {
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-re ".*xecuting new program: .*${testfile2}.*${srcfile2}:${execd_line}.*int local_j = argc;.*$gdb_prompt $"\
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{pass "step through execl call"}
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-re "$gdb_prompt $" {fail "step through execl call"}
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timeout {fail "(timeout) step through execl call"}
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}
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send_gdb "next\n"
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gdb_expect {
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-re "printf \\(.Hello .*$gdb_prompt $"\
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{pass "step after execl call"}
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-re "$gdb_prompt $" {fail "step after execl call"}
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timeout {fail "(timeout) step after execl call"}
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}
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# Verify that we can print a local variable (which happens to be
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# assigned the value of main's argc).
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#
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send_gdb "print local_j\n"
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gdb_expect {
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-re ".* = 3.*$gdb_prompt $"\
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{pass "print execd-program/local_j (after execl)"}
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-re "$gdb_prompt $" {fail "print execd-program/local_j (after execl)"}
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timeout {fail "(timeout) print execd-program/local_j (after execl)"}
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}
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# Explicitly kill this program, or a subsequent rerun actually runs
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# the exec'd program, not the original program...
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clean_restart $binfile
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# Start the program running, and stop at main.
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#
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if ![runto_main] then {
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fail "Couldn't run ${testfile} (4th try)"
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return
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}
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# Verify that we can follow through follow an execv()
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# call. (We must jump around earlier exec* calls.)
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#
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set tbreak_line [gdb_get_line_number "tbreak-execv"]
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send_gdb "tbreak ${tbreak_line}\n"
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gdb_expect {
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-re "Temporary breakpoint .*file .*${srcfile}, line ${tbreak_line}.*$gdb_prompt $"\
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{pass "prepare to jump to execv call"}
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-re "$gdb_prompt $" {fail "prepare to jump to execv call"}
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timeout {fail "(timeout) prepare to jump to execv call"}
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}
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send_gdb "jump ${tbreak_line}\n"
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gdb_expect {
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-re "main.* at .*${srcfile}:${tbreak_line}.*$gdb_prompt $"\
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{pass "jump to execv call"}
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-re "$gdb_prompt $" {fail "jump to execv call"}
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timeout {fail "(timeout) jump to execv call"}
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}
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send_gdb "next\n"
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gdb_expect {
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-re ".*xecuting new program: .*${testfile2}.*${srcfile2}:${execd_line}.*int local_j = argc;.*$gdb_prompt $"\
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{pass "step through execv call"}
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-re "$gdb_prompt $" {fail "step through execv call"}
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timeout {fail "(timeout) step through execv call"}
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}
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send_gdb "next\n"
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gdb_expect {
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-re "printf \\(.Hello .*$gdb_prompt $"\
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{pass "step after execv call"}
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-re "$gdb_prompt $" {fail "step after execv call"}
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timeout {fail "(timeout) step after execv call"}
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}
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# Verify that we can print a local variable (which happens to be
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# assigned the value of main's argc).
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#
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send_gdb "print local_j\n"
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gdb_expect {
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-re ".* = 2.*$gdb_prompt $"\
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{pass "print execd-program/local_j (after execv)"}
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-re "$gdb_prompt $" {fail "print execd-program/local_j (after execv)"}
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timeout {fail "(timeout) print execd-program/local_j (after execv)"}
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}
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# Explicitly kill this program, or a subsequent rerun actually runs
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# the exec'd program, not the original program...
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clean_restart $binfile
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# Start the program running, and stop at main.
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#
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if ![runto_main] then {
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fail "Couldn't run ${testfile} (5th try)"
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return
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}
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# Verify that we can just continue and thereby follow through an
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# exec call. (Since the breakpoint on "main" is reset, we should
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# just stop in main of the newly-exec'd program.)
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#
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send_gdb "continue\n"
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gdb_expect {
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-re ".*xecuting new program: .*${testfile2}.*${srcfile2}:${execd_line}.*int local_j = argc;.*$gdb_prompt $"\
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{pass "continue through exec"}
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-re "$gdb_prompt $" {fail "continue through exec"}
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timeout {fail "(timeout) continue through exec"}
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}
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}
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# Start with a fresh gdb
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gdb_exit
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clean_restart $binfile
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do_exec_tests
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return 0
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