2004-05-13 20:12:07 +02:00
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# This testcase is part of GDB, the GNU debugger.
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2018-01-01 05:43:02 +01:00
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# Copyright 2004-2018 Free Software Foundation, Inc.
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2004-05-13 20:12:07 +02:00
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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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2007-08-23 20:14:19 +02:00
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# the Free Software Foundation; either version 3 of the License, or
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2004-05-13 20:12:07 +02:00
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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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2007-08-23 20:14:19 +02:00
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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2004-05-13 20:12:07 +02:00
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# Check that GDB can trigger and backtrace SIGSEGV signal stacks
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# caused by both accessing (data) and executing (code) at address
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# zero.
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# On function descriptor architectures, a zero descriptor, instead of
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# a NULL pointer, is used. That way the NULL code test always
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# contains a zero code reference.
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# For recovery, sigjmp/longjmp are used.
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# This also tests backtrace/gdb1476.
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2005-03-08 11:12:21 +01:00
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if [target_info exists gdb,nosignals] {
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2007-03-23 13:41:18 +01:00
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verbose "Skipping signull.exp because of nosignals."
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2005-03-08 11:12:21 +01:00
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continue
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}
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2004-05-13 20:12:07 +02:00
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test suite update - gdb.base/s*
Convert files gdb.base/s*.exp to use standard_output_file et al.
* gdb.base/save-bp.exp, gdb.base/savedregs.exp,
gdb.base/scope.exp, gdb.base/sep.exp, gdb.base/sepsymtab.exp,
gdb.base/set-lang-auto.exp, gdb.base/setshow.exp,
gdb.base/setvar.exp, gdb.base/shlib-call.exp,
gdb.base/shreloc.exp, gdb.base/sigall.exp,
gdb.base/sigaltstack.exp, gdb.base/sigbpt.exp,
gdb.base/sigchld.exp, gdb.base/siginfo-addr.exp,
gdb.base/siginfo-infcall.exp, gdb.base/siginfo-obj.exp,
gdb.base/siginfo.exp, gdb.base/signals.exp, gdb.base/signest.exp,
gdb.base/signull.exp, gdb.base/sigrepeat.exp,
gdb.base/sigstep.exp, gdb.base/sizeof.exp,
gdb.base/skip-solib.exp, gdb.base/so-impl-ld.exp,
gdb.base/solib-display.exp, gdb.base/solib-nodir.exp,
gdb.base/solib-overlap.exp, gdb.base/solib-symbol.exp,
gdb.base/solib-weak.exp, gdb.base/source.exp,
gdb.base/stack-checking.exp, gdb.base/stale-infcall.exp,
gdb.base/stap-probe.exp, gdb.base/start.exp,
gdb.base/step-break.exp, gdb.base/step-bt.exp,
gdb.base/step-line.exp, gdb.base/step-resume-infcall.exp,
gdb.base/step-test.exp, gdb.base/structs.exp,
gdb.base/structs2.exp, gdb.base/structs3.exp,
gdb.base/symbol-without-target_section.exp: Use standard_testfile,
standard_output_file, prepare_for_testing, clean_restart.
2013-06-27 20:58:28 +02:00
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standard_testfile .c
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2004-05-13 20:12:07 +02:00
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if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
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2016-12-01 21:47:50 +01:00
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untested "failed to compile"
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2006-08-10 07:27:22 +02:00
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return -1
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2004-05-13 20:12:07 +02:00
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}
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test suite update - gdb.base/s*
Convert files gdb.base/s*.exp to use standard_output_file et al.
* gdb.base/save-bp.exp, gdb.base/savedregs.exp,
gdb.base/scope.exp, gdb.base/sep.exp, gdb.base/sepsymtab.exp,
gdb.base/set-lang-auto.exp, gdb.base/setshow.exp,
gdb.base/setvar.exp, gdb.base/shlib-call.exp,
gdb.base/shreloc.exp, gdb.base/sigall.exp,
gdb.base/sigaltstack.exp, gdb.base/sigbpt.exp,
gdb.base/sigchld.exp, gdb.base/siginfo-addr.exp,
gdb.base/siginfo-infcall.exp, gdb.base/siginfo-obj.exp,
gdb.base/siginfo.exp, gdb.base/signals.exp, gdb.base/signest.exp,
gdb.base/signull.exp, gdb.base/sigrepeat.exp,
gdb.base/sigstep.exp, gdb.base/sizeof.exp,
gdb.base/skip-solib.exp, gdb.base/so-impl-ld.exp,
gdb.base/solib-display.exp, gdb.base/solib-nodir.exp,
gdb.base/solib-overlap.exp, gdb.base/solib-symbol.exp,
gdb.base/solib-weak.exp, gdb.base/source.exp,
gdb.base/stack-checking.exp, gdb.base/stale-infcall.exp,
gdb.base/stap-probe.exp, gdb.base/start.exp,
gdb.base/step-break.exp, gdb.base/step-bt.exp,
gdb.base/step-line.exp, gdb.base/step-resume-infcall.exp,
gdb.base/step-test.exp, gdb.base/structs.exp,
gdb.base/structs2.exp, gdb.base/structs3.exp,
gdb.base/symbol-without-target_section.exp: Use standard_testfile,
standard_output_file, prepare_for_testing, clean_restart.
2013-06-27 20:58:28 +02:00
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clean_restart ${binfile}
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2004-05-13 20:12:07 +02:00
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#
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# Run to `main' where we begin our tests.
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#
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if ![runto_main] then {
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gdb_suppress_tests
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}
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# If we can examine what's at memory address 0, it is possible that we
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# could also execute it. This could probably make us run away,
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# executing random code, which could have all sorts of ill effects,
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# especially on targets without an MMU. Don't run the tests in that
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# case.
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2014-08-07 10:09:38 +02:00
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if { [is_address_zero_readable] } {
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2016-12-01 21:40:05 +01:00
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untested "memory at address 0 is possibly executable"
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2014-08-07 10:09:38 +02:00
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return
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2004-05-13 20:12:07 +02:00
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}
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# If an attempt to call a NULL pointer leaves the inferior in main,
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# then function pointers are descriptors, probe this and remember the
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# result.
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2010-06-01 23:29:21 +02:00
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gdb_test_no_output "set test = code_entry_point" \
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"set for function pointer probe"
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2004-05-13 20:12:07 +02:00
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set test "probe function pointer"
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set function_pointer code_entry_point
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2009-02-05 14:59:18 +01:00
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set signame "SIGSEGV"
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2004-05-13 20:12:07 +02:00
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gdb_test_multiple "continue" "$test" {
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2004-06-16 18:40:51 +02:00
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-re "Program received signal SIGSEGV.*bowler .*$gdb_prompt $" {
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2004-05-13 20:12:07 +02:00
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set function_pointer code_descriptor
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pass "$test (function descriptor)"
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}
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-re "Program received signal SIGSEGV.*0.*$gdb_prompt $" {
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pass "$test (function entry-point)"
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}
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2009-02-05 14:59:18 +01:00
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-re "Program received signal SIGBUS.*0.*$gdb_prompt $" {
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set signame SIGBUS
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pass "$test (function entry-point)"
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}
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2004-05-13 20:12:07 +02:00
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}
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# Re-start from scratch, breakpoint the bowler so that control is
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# regained after each test, and run up to that.
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rerun_to_main
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gdb_test "break bowler"
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gdb_test "break keeper"
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# By default Stop:Yes Print:Yes Pass:Yes
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gdb_test "handle SIGSEGV" "SIGSEGV.*Yes.*Yes.*Yes.*Segmentation fault"
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2009-02-05 14:59:18 +01:00
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gdb_test "handle SIGBUS" "SIGBUS.*Yes.*Yes.*Yes.*Bus error"
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2004-05-13 20:12:07 +02:00
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# For the given signal type, check that: the SIGSEGV occures; a
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# backtrace from the SEGV works; the sigsegv is delivered; a backtrace
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# through the SEGV works.
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proc test_segv { name tag bt_from_segv bt_from_keeper } {
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2009-02-05 14:59:18 +01:00
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global signame
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2004-07-13 15:44:01 +02:00
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gdb_test continue "Breakpoint.* bowler.*" "${name}; start with the bowler"
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# NB: Don't use $tag in the testname - changes across systems.
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2010-06-01 23:29:21 +02:00
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gdb_test_no_output "set test = $tag" "${name}; select the pointer type"
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2009-02-05 14:59:18 +01:00
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gdb_test continue "Program received signal ${signame}.*" \
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"${name}; take the ${signame}"
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gdb_test backtrace $bt_from_segv "${name}; backtrace from ${signame}"
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2004-07-13 15:44:01 +02:00
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gdb_test continue "Breakpoint.* keeper.*" "${name}; continue to the keeper"
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2009-02-05 14:59:18 +01:00
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gdb_test backtrace $bt_from_keeper "${name}; backtrace from keeper through ${signame}"
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2004-05-13 20:12:07 +02:00
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}
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2004-07-13 15:44:01 +02:00
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test_segv "data read" data_read \
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2004-06-16 18:40:51 +02:00
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{#0 .* bowler .*#1 .* main .*} \
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{#0 .* keeper .*#1 .* handler .*#2 .* bowler .*#3 .* main .*}
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2004-07-13 15:44:01 +02:00
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test_segv "data write" data_write \
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2004-05-13 20:12:07 +02:00
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{#0 .* bowler .*#1 .* main .*} \
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{#0 .* keeper .*#1 .* handler .*#2 .* bowler .*#3 .* main .*}
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test_segv code $function_pointer \
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{#0 .* 0x0+ .*#1 .* bowler .*#2 .* main .*} \
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{#0 .* keeper .*#1 .* handler .*#2 .* 0x0+ .*#3 .* bowler .*#4 .* main .*}
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