20c6f1e176
I find some gdb.python tests fail on arm-none-eabi target, because the tests assume that memory on address 0x is inaccessible. Some tests (in gdb.base) are aware of this, so do a "x 0" check first. However, the code is copy-n-paste. This patch is to move the "x 0" check to a procedure in lib/gdb.exp, and get needed tests call it. The original code matches pattern "0x0:\[ \t\]*Error accessing memory address 0x0\r\n$gdb_prompt $", but I remove it from the new proc is_address_zero_readable, because GDB doesn't emit such message any more. gdb/testsuite: 2014-08-09 Yao Qi <yao@codesourcery.com> * gdb.base/display.exp: Invoke is_address_zero_readable. * gdb.guile/scm-value.exp (test_value_in_inferior): Likewise. * gdb.python/py-value.exp (test_value_in_inferior): Likewise. * gdb.base/hbreak-unmapped.exp: Return if is_address_zero_readable returns true. * gdb.base/signest.exp: Likewise. * gdb.base/signull.exp: Likewise. * gdb.base/sigbpt.exp: Likewise. * gdb.guile/scm-disasm.exp: Do the test if is_address_zero_readable returns false. * gdb.guile/scm-pretty-print.exp (run_lang_tests): Likewise. * gdb.python/py-arch.exp: Likewise. * gdb.python/py-prettyprint.exp (run_lang_tests): Likewise. * lib/gdb.exp (is_address_zero_readable): New proc.
199 lines
6.9 KiB
Text
199 lines
6.9 KiB
Text
# Copyright 1997-2014 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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# display.exp Test display commands
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# Also do some printing stuff for coverage's sake.
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#
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standard_testfile
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if {[prepare_for_testing $testfile.exp $testfile $srcfile \
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{debug nowarnings}]} {
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untested display.exp
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return -1
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}
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# Preserve the old timeout, and set a new one that should be
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# sufficient to avoid timing out during this test.
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set oldtimeout $timeout
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set timeout [expr "$timeout + 60"]
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verbose "Timeout is now $timeout seconds" 2
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# use this to debug:
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#log_user 1
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# Some coverage stuff
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#
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if !$use_gdb_stub {
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gdb_test "kill" ".*The program is not being run.*"
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gdb_test "detach" ".*"
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gdb_test "run" ".*"
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gdb_load ${binfile}
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gdb_test "kill" ".*" "kill again"
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gdb_test "detach" ".*" "detach again"
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gdb_exit
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gdb_start
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gdb_reinitialize_dir $srcdir/$subdir
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gdb_load ${binfile}
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}
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# Ok, on to real life
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#
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if ![runto_main] then {
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fail "Could not run to main - other tests will fail."
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continue
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}
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# Disable hardware watchpoints if necessary.
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if [target_info exists gdb,no_hardware_watchpoints] {
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gdb_test_no_output "set can-use-hw-watchpoints 0" ""
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}
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set bp_location1 [gdb_get_line_number "set breakpoint 1 here"]
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gdb_test "break $bp_location1" ".*Breakpoint 2.*" "break do_loops"
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gdb_test "cont" ".*Breakpoint 2, do_loops.*" "get to do_loops"
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# Create stopping points.
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#
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gdb_test "watch sum" ".*\[Ww\]atchpoint 3: sum.*" "set watch"
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set bp_location2 [gdb_get_line_number "set breakpoint 2 here"]
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gdb_test "break $bp_location2" ".*Breakpoint 4.*" "break loop end"
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# Create displays for those points
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#
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gdb_test "info disp" ".*There are no auto-display expressions now..*" "inf disp"
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gdb_test "disp i" ".*1: i = 0.*" "display i"
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gdb_test "disp/x j" ".*2: /x j = 0x0.*" "display j"
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gdb_test "disp/i &k" ".*3: x/i &k(\r\n| ) $hex:.*" "display &k"
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gdb_test "disp/f f" ".*4: /f f = 3.1415*" "display/f f"
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gdb_test "disp/s &sum" ".*5: x/s &sum $hex.*sum.:.*" "display/s &sum"
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# Hit the displays
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#
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gdb_test "cont" ".*\[Ww\]atchpoint 3: sum.*\[1-9\]*: x/s &sum.*\[1-9\]*: /f f = 3.1415\r\n\[1-9\]*: x/i &k.*\r\n\[1-9\]*: /x j = 0x0\r\n\[1-9\]*: i = 0.*" "first disp"
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gdb_test "cont" ".*\[Ww\]atchpoint 3: sum.*\[1-9\]*: x/s &sum.*\[1-9\]*: /f f = 4.1415\r\n\[1-9\]*: x/i &k.*\r\n\[1-9\]*: /x j = 0x0.*\[1-9\]*: i = 0.*" "second disp"
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gdb_test "enab disp 6" ".*No display number 6..*" "catch err"
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gdb_test_no_output "disab disp 1" "disab disp 1"
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gdb_test_no_output "disab disp 2" "disab disp 2"
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gdb_test_no_output "enab disp 1" "re-enab"
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gdb_test_no_output "enab disp 1" "re-enab of enab"
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gdb_test_no_output "undisp 5" "undisp"
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gdb_test "info disp" ".*Auto-display expressions now in effect.*y /f f.*y /1bi &k.*n /x j.*y i.*" "info disp"
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gdb_test "cont" ".*\[Ww\]atch.*5.1415.*.*i = 0.*" "next hit"
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gdb_test "undisp" \
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"" \
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"undisp all" \
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".*Delete all auto-display expressions.*y or n. $" \
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"y"
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# Test displaying a variable that is temporarily at a bad address.
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# But if we can examine what's at memory address 0, then we'll also be
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# able to display it without error. Don't run the test in that case.
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set can_read_0 [is_address_zero_readable]
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if { !$can_read_0 } {
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gdb_test "disp *p_i" ".*: \\*p_i = 0"
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gdb_test "p p_i = 0x0" " = \\(int \\*\\) 0x0"
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gdb_test "display" ".*: \\*p_i = <error: .*>" "display bad address"
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gdb_test "p p_i = &i" " = \\(int \\*\\) $hex"
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gdb_test "display" ".*: \\*p_i = 0" "display good address"
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gdb_test "undisp" \
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"" \
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"undisp all again" \
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".*Delete all auto-display expressions.*y or n. $" \
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"y"
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}
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gdb_test "disab 3" ".*.*" "disab 3"
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gdb_test "cont" ".*Breakpoint 4.*" "watch off"
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# Now the printf tests
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#
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# The "finish" command may leave us mid-line in the caller on some
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# targets, including but not limited to the m68k, i386 & PA. So we
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# have to arrange to step until we hit the line with the call to
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# "do_vars".
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gdb_test_multiple "finish" "finish" {
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-re ".*do_loops\\(\\);.*$gdb_prompt $" {
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send_gdb "step\n"
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exp_continue
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}
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-re ".*do_vars.*$gdb_prompt $" {
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pass "finish"
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}
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}
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gdb_test "step" ".*do_vars.*.*i = 9.*"
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set bp_location3 [gdb_get_line_number "set breakpoint 3 here"]
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gdb_test "tbreak $bp_location3" ".*breakpoint 5 a.*" "tbreak in do_vars"
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gdb_test "cont" ".*do_vars.*$bp_location3.*$bp_location3.*"
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# Beat on printf a bit
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#
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gdb_test "printf" ".*Argument required.*"
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gdb_test "printf %d" ".*Bad format string, missing.*"
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gdb_test "printf \"%d" ".*Bad format string, non-terminated.*"
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gdb_test "printf \"%d%d\",i" ".*Wrong number of arguments.*"
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gdb_test "printf \"\\\\!\\a\\f\\r\\t\\v\\b\\n\"" ".*!.*"
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gdb_test_no_output "printf \"\"" "re-set term"
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gdb_test "printf \"\\w\"" ".*Unrecognized escape character.*"
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gdb_test "printf \"%d\" j" ".*Invalid argument syntax.*"
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gdb_test "printf \"%p\\n\", 0" "\\(nil\\)"
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gdb_test "printf \"%p\\n\", 1" "0x1"
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# play with "print", too
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#
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gdb_test "print/k j" ".*Undefined output format.*"
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gdb_test "print/d j" " = 0\[\\r\\n\]+" "debug test output 1"
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gdb_test "print/r j" " = 0\[\\r\\n\]+" "debug test output 1a"
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gdb_test "print/x j" " = 0x0\[\\r\\n\]+" "debug test output 2"
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gdb_test "print/r j" " = 0x0\[\\r\\n\]+" "debug test output 2a"
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gdb_test "print j" " = 0\[\\r\\n\]+" "debug test output 3"
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# x/0 j doesn't produce any output and terminates PA64 process when testing
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if [istarget "hppa2.0w-hp-hpux11*"] {
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xfail "'x/0 j' terminates PA64 process - skipped test point"
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} else {
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gdb_test_no_output "x/0 j"
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}
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if [istarget "hppa*-hp-hpux*"] {
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# on HP-UX you could access the first page without getting an error
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gdb_test "x/rx j" ".*(Cannot access|Error accessing) memory.*|.*0xa:\[ \t\]*\[0-9\]+.*"
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}
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gdb_test "print/0 j" ".*Item count other than 1 is meaningless.*" "print/0 j"
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gdb_test "print/s sum" " = 1000" "ignored s"
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gdb_test "print/i sum" ".*Format letter.*is meaningless.*.*" "no i"
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gdb_test "print/a &sum" ".*= $hex.*<sum>.*"
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# If the constant below is larger than the length of main, then
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# this test will (incorrectly) fail. So use a small number.
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gdb_test "print/a main+4" ".*= $hex.*<.*>.*"
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gdb_test "print/a \$pc" ".*= $hex.*<do_vars+.*>.*"
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gdb_test "print/a &&j" ".*A .* error in expression.*"
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# Done!
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#
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gdb_exit
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# Restore the preserved old timeout value.
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set timeout $oldtimeout
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verbose "Timeout is now $timeout seconds" 2
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return 0
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