| # Copyright (C) 1992, 1994, 1997, 1998 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 2 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, write to the Free Software |
| # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| |
| # Please email any bugs, comments, and/or additions to this file to: |
| # bug-gdb@prep.ai.mit.edu |
| |
| # This file was written by Fred Fish. (fnf@cygnus.com) |
| |
| if $tracelevel then { |
| strace $tracelevel |
| } |
| |
| set prms_id 0 |
| set bug_id 0 |
| |
| set testfile "watchpoint" |
| set srcfile ${testfile}.c |
| set binfile ${objdir}/${subdir}/${testfile} |
| |
| |
| if [get_compiler_info ${binfile}] { |
| return -1 |
| } |
| |
| # if we are on HPUX and we are not compiled with gcc, then skip these tests. |
| |
| if [istarget hppa*-*-hpux*] { |
| if {!$gcc_compiled} { |
| continue |
| } |
| } |
| |
| |
| if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } { |
| gdb_suppress_entire_file "Testcase compile failed, so all tests in this file will automatically fail." |
| } |
| |
| # Prepare for watchpoint tests by setting up two breakpoints and one |
| # watchpoint. |
| # |
| # We use breakpoints at marker functions to get past all the startup code, |
| # so we can get to the watchpoints in a reasonable amount of time from a |
| # known starting point. |
| # |
| # For simplicity, so we always know how to reference specific breakpoints or |
| # watchpoints by number, we expect a particular ordering and numbering of |
| # each in the combined breakpoint/watchpoint table, as follows: |
| # |
| # Number What Where |
| # 1 Breakpoint marker1() |
| # 2 Breakpoint marker2() |
| # 3 Watchpoint ival3 |
| |
| proc initialize {} { |
| global gdb_prompt |
| global hex |
| global decimal |
| global srcfile |
| |
| if [gdb_test "break marker1" "Breakpoint 1 at $hex: file .*$srcfile, line $decimal.*" "set breakpoint at marker1" ] { |
| return 0; |
| } |
| |
| |
| if [gdb_test "break marker2" "Breakpoint 2 at $hex: file .*$srcfile, line $decimal.*" "set breakpoint at marker2" ] { |
| return 0; |
| } |
| |
| |
| if [gdb_test "info break" "1\[ \]*breakpoint.*marker1.*\r\n2\[ \]*breakpoint.*marker2.*" "info break in watchpoint.exp" ] { |
| return 0; |
| } |
| |
| |
| if [gdb_test "watch ival3" ".*\[Ww\]atchpoint 3: ival3" "set watchpoint on ival3" ] { |
| return 0; |
| } |
| |
| |
| # "info watch" is the same as "info break" |
| |
| if [gdb_test "info watch" "1\[ \]*breakpoint.*marker1.*\r\n2\[ \]*breakpoint.*marker2.*\r\n3\[ \]*.*watchpoint.*ival3" "watchpoint found in watchpoint/breakpoint table" ] { |
| return 0; |
| } |
| |
| |
| # After installing the watchpoint, we disable it until we are ready |
| # to use it. This allows the test program to run at full speed until |
| # we get to the first marker function. |
| |
| if [gdb_test "disable 3" "disable 3\[\r\n\]+" "disable watchpoint" ] { |
| return 0; |
| } |
| |
| |
| return 1 |
| } |
| |
| # |
| # Test simple watchpoint. |
| # |
| |
| proc test_simple_watchpoint {} { |
| global gdb_prompt |
| global hex |
| global decimal |
| |
| # Ensure that the watchpoint is disabled when we startup. |
| |
| if [gdb_test "disable 3" "^disable 3\[\r\n\]+" "disable watchpoint in test_simple_watchpoint" ] { |
| return 0; |
| } |
| |
| |
| # Run until we get to the first marker function. |
| |
| gdb_run_cmd |
| set timeout 600 |
| gdb_expect { |
| -re "Breakpoint 1, marker1 .*$gdb_prompt $" { |
| pass "run to marker1 in test_simple_watchpoint" |
| } |
| -re ".*$gdb_prompt $" { |
| fail "run to marker1 in test_simple_watchpoint" |
| return |
| } |
| timeout { |
| fail "run to marker1 in test_simple_watchpoint (timeout)" |
| return |
| } |
| } |
| |
| # After reaching the marker function, enable the watchpoint. |
| |
| if [gdb_test "enable 3" "^enable 3\[\r\n\]+" "enable watchpoint" ] { |
| return ; |
| } |
| |
| |
| gdb_test "break func1" "Breakpoint.*at.*" |
| gdb_test "set \$func1_breakpoint_number = \$bpnum" "" |
| |
| gdb_test "continue" "Continuing.*Breakpoint \[0-9\]*, func1.*" \ |
| "continue to breakpoint at func1" |
| |
| # Continue until the first change, from -1 to 0 |
| |
| send_gdb "cont\n" |
| gdb_expect { |
| -re "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = -1.*New value = 0.*ival3 = count; ival4 = count;.*$gdb_prompt $" { |
| pass "watchpoint hit, first time" |
| } |
| -re "Continuing.*Breakpoint.*func1.*$gdb_prompt $" { |
| setup_xfail "m68*-*-*" 2597 |
| fail "thought it hit breakpoint at func1 twice" |
| gdb_test "delete \$func1_breakpoint_number" "" |
| gdb_test "continue" "\ |
| Continuing.*\[Ww\]atchpoint.*ival3.*Old value = -1.*New value = 0.*ival3 = count;" \ |
| "watchpoint hit, first time" |
| } |
| -re ".*$gdb_prompt $" { fail "watchpoint hit, first time" ; return } |
| timeout { fail "watchpoint hit, first time (timeout)" ; return } |
| eof { fail "watchpoint hit, first time (eof)" ; return } |
| } |
| |
| gdb_test "delete \$func1_breakpoint_number" "" |
| |
| # Continue until the next change, from 0 to 1. |
| gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = 0.*New value = 1.*ival3 = count; ival4 = count;.*" "watchpoint hit, second time" |
| |
| # Continue until the next change, from 1 to 2. |
| gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = 1.*New value = 2.*ival3 = count; ival4 = count;.*" "watchpoint hit, third time" |
| |
| # Continue until the next change, from 2 to 3. |
| gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = 2.*New value = 3.*ival3 = count; ival4 = count;.*" "watchpoint hit, fourth time" |
| |
| # Continue until the next change, from 3 to 4. |
| # Note that this one is outside the loop. |
| |
| gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = 3.*New value = 4.*ival3 = count; ival4 = count;.*" "watchpoint hit, fifth time" |
| |
| # Continue until we hit the finishing marker function. |
| # Make sure we hit no more watchpoints. |
| |
| gdb_test "cont" "Continuing.*Breakpoint.*marker2 \(\).*" \ |
| "continue to marker2" |
| |
| # Disable the watchpoint so we run at full speed until we exit. |
| |
| if [gdb_test "disable 3" "^disable 3\[\r\n\]+" "watchpoint disabled" ] { |
| return ; |
| } |
| |
| |
| # Run until process exits. |
| |
| if [target_info exists gdb,noresults] { return } |
| |
| gdb_continue_to_end "continue to exit in test_simple_watchpoint" |
| } |
| |
| # Test disabling watchpoints. |
| |
| proc test_disabling_watchpoints {} { |
| global gdb_prompt |
| global binfile |
| global srcfile |
| global decimal |
| global hex |
| |
| # Ensure that the watchpoint is disabled when we startup. |
| |
| if [gdb_test "disable 3" "^disable 3\[\r\n\]+" "disable watchpoint in test_disabling_watchpoints" ] { |
| return 0; |
| } |
| |
| |
| # Run until we get to the first marker function. |
| |
| gdb_run_cmd |
| set timeout 600 |
| gdb_expect { |
| -re "Breakpoint 1, marker1 .*$gdb_prompt $" { |
| pass "run to marker1 in test_disabling_watchpoints" |
| } |
| -re ".*$gdb_prompt $" { |
| fail "run to marker1 in test_disabling_watchpoints" |
| return |
| } |
| timeout { |
| fail "run to marker1 in test_disabling_watchpoints (timeout)" |
| return |
| } |
| } |
| |
| # After reaching the marker function, enable the watchpoint. |
| |
| if [gdb_test "enable 3" "^enable 3\[\r\n\]+" "watchpoint enabled" ] { |
| return ; |
| } |
| |
| |
| # Continue until the first change, from -1 to 0 |
| # Don't check the old value, because on VxWorks the variable value |
| # will not have been reinitialized. |
| gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = .*New value = 0.*ival3 = count; ival4 = count;.*" "watchpoint hit in test_disabling_watchpoints, first time" |
| |
| # Continue until the next change, from 0 to 1. |
| gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = 0.*New value = 1.*ival3 = count; ival4 = count;.*" "watchpoint hit in test_disabling_watchpoints, second time" |
| |
| # Disable the watchpoint but leave breakpoints |
| |
| if [gdb_test "disable 3" "^disable 3\[\r\n\]+" "disable watchpoint #2 in test_disabling_watchpoints" ] { |
| return 0; |
| } |
| |
| |
| # Check watchpoint list, looking for the entry that confirms the |
| # watchpoint is disabled. |
| gdb_test "info watchpoints" "3\[ \]*.*watchpoint\[ \]*keep\[ \]*n\[ \]*ival3\r\n.*" "watchpoint disabled in table" |
| |
| # Continue until we hit the finishing marker function. |
| # Make sure we hit no more watchpoints. |
| gdb_test "cont" "Continuing.*Breakpoint.*marker2 \\(\\).*" \ |
| "disabled watchpoint skipped" |
| |
| if [target_info exists gdb,noresults] { return } |
| |
| gdb_continue_to_end "continue to exit in test_disabling_watchpoints" |
| } |
| |
| # Test stepping and other mundane operations with watchpoints enabled |
| proc test_stepping {} { |
| global gdb_prompt |
| |
| if [runto marker1] then { |
| gdb_test "watch ival2" ".*\[Ww\]atchpoint \[0-9\]*: ival2" |
| |
| # Well, let's not be too mundane. It should be a *bit* of a challenge |
| gdb_test "break func2 if 0" "Breakpoint.*at.*" |
| gdb_test "p \$func2_breakpoint_number = \$bpnum" " = .*" |
| |
| # The HPPA has a problem here if it's not using hardware watchpoints |
| if {[ istarget "hppa*-*-*" ] && ![ istarget "hppa*-*-*bsd*" ]} then { |
| # Don't actually try doing the call, if we do we can't continue. |
| setup_xfail "*-*-*" |
| fail "calling function with watchpoint enabled" |
| } else { |
| # The problem is that GDB confuses stepping through the call |
| # dummy with hitting the breakpoint at the end of the call dummy. |
| # Will be fixed once all architectures define |
| # CALL_DUMMY_BREAKPOINT_OFFSET. |
| setup_xfail "*-*-*" |
| # This doesn't occur if the call dummy starts with a call, |
| # because we are out of the dummy by the first time the inferior |
| # stops. |
| clear_xfail "d10v*-*-*" |
| clear_xfail "m68*-*-*" |
| clear_xfail "i*86*-*-*" |
| clear_xfail "vax-*-*" |
| # The following architectures define CALL_DUMMY_BREAKPOINT_OFFSET. |
| clear_xfail "alpha-*-*" |
| clear_xfail "mips*-*-*" |
| clear_xfail "sparc-*-*" |
| clear_xfail "hppa*-*-*bsd*" |
| # It works with the generic inferior function calling code too. |
| clear_xfail "mn10200*-*-*" |
| clear_xfail "mn10300*-*-*" |
| gdb_test "p func1 ()" "= 73" \ |
| "calling function with watchpoint enabled" |
| } |
| |
| # |
| # "finish" brings us back to main. |
| # On some targets (e.g. alpha) gdb will stop from the finish in midline |
| # of the marker1 call. This is due to register restoring code on |
| # the alpha and might be caused by stack adjustment instructions |
| # on other targets. In this case we will step once more. |
| # |
| |
| send_gdb "finish\n" |
| gdb_expect { |
| -re "Run.*exit from.*marker1.* at" { } |
| default { fail "finish from marker1" ; return } |
| } |
| |
| gdb_expect { |
| -re "marker1 \\(\\);.*$gdb_prompt $" { |
| send_gdb "step\n" |
| exp_continue |
| } |
| -re "func1 \\(\\);.*$gdb_prompt $" { |
| pass "finish from marker1" |
| } |
| -re ".*$gdb_prompt $" { |
| fail "finish from marker1" |
| } |
| default { fail "finish from marker1" ; return } |
| } |
| |
| gdb_test "next" "for \\(count = 0.*" "next to `for' in watchpoint.exp" |
| |
| # Now test that "until" works. It's a bit tricky to test |
| # "until", because compilers don't always arrange the code |
| # exactly the same way, and we might get slightly different |
| # sequences of statements. But the following should be true |
| # (if not it is a compiler or a debugger bug): The user who |
| # does "until" at every statement of a loop should end up |
| # stepping through the loop once, and the debugger should not |
| # stop for any of the remaining iterations. |
| |
| gdb_test "until" "ival1 = count.*" "until to ival1 assignment" |
| gdb_test "until" "ival3 = count.*" "until to ival3 assignment" |
| send_gdb "until\n" |
| gdb_expect { |
| -re "(for \\(count = 0|\}).*$gdb_prompt $" { |
| gdb_test "until" "ival1 = count; /. Outside loop ./" \ |
| "until out of loop" |
| } |
| -re "ival1 = count; /. Outside loop ./.*$gdb_prompt $" { |
| pass "until out of loop" |
| } |
| -re ".*$gdb_prompt $" { |
| fail "until out of loop" |
| } |
| default { fail "until out of loop" ; return } |
| } |
| |
| gdb_test "step" "ival2 = count.*" "step to ival2 assignment" |
| } |
| } |
| |
| # Test stepping and other mundane operations with watchpoints enabled |
| proc test_watchpoint_triggered_in_syscall {} { |
| global gdb_prompt |
| |
| if [target_info exists gdb,noinferiorio] { |
| verbose "Skipping test_watchpoint_triggered_in_syscall due to noinferiorio" |
| return |
| } |
| # Run until we get to the first marker function. |
| set x 0 |
| set y 0 |
| set testname "Watch buffer passed to read syscall" |
| if [runto marker2] then { |
| gdb_test "watch buf\[0\]" ".*\[Ww\]atchpoint \[0-9\]*: buf\\\[0\\\]" |
| gdb_test "watch buf\[1\]" ".*\[Ww\]atchpoint \[0-9\]*: buf\\\[1\\\]" |
| gdb_test "watch buf\[2\]" ".*\[Ww\]atchpoint \[0-9\]*: buf\\\[2\\\]" |
| gdb_test "watch buf\[3\]" ".*\[Ww\]atchpoint \[0-9\]*: buf\\\[3\\\]" |
| gdb_test "watch buf\[4\]" ".*\[Ww\]atchpoint \[0-9\]*: buf\\\[4\\\]" |
| gdb_test "break marker4" ".*Breakpoint.*" |
| |
| gdb_test "set doread = 1" "" |
| |
| # If we send_gdb "123\n" before gdb has switched the tty, then it goes |
| # to gdb, not the inferior, and we lose. So that is why we have |
| # watchpoint.c prompt us, so we can wait for that prompt. |
| send_gdb "continue\n"; |
| gdb_expect { |
| -re "Continuing\\.\r\ntype stuff for buf now:" { |
| pass "continue to read" |
| } |
| default { |
| fail "continue to read"; |
| return ; |
| } |
| } |
| |
| send_gdb "123\n" |
| gdb_expect { |
| -re ".*\[Ww\]atchpoint.*buf\\\[0\\\].*Old value = 0.*New value = 49\[^\n\]*\n" { set x [expr $x+1] ; exp_continue } |
| -re ".*\[Ww\]atchpoint.*buf\\\[1\\\].*Old value = 0.*New value = 50\[^\n\]*\n" { set x [expr $x+1] ; exp_continue } |
| -re ".*\[Ww\]atchpoint.*buf\\\[2\\\].*Old value = 0.*New value = 51\[^\n\]*\n" { set x [expr $x+1] ; exp_continue } |
| -re ".*\[Ww\]atchpoint.*buf\\\[3\\\].*Old value = 0.*New value = 10\[^\n\]*\n" { set x [expr $x+1] ; exp_continue } |
| -re ".*$gdb_prompt $" { pass "sent 123" } |
| timeout { fail "sent 123 (timeout)" } |
| } |
| |
| # Examine the values in buf to see how many watchpoints we |
| # should have printed. |
| send_gdb "print buf\[0\]\n" |
| gdb_expect { |
| -re ".*= 49.*$gdb_prompt $" { set y [expr $y+1]; pass "print buf\[0\]"} |
| -re ".*= 0.*$gdb_prompt $" { pass "print buf\[0\]"} |
| -re ".*$gdb_prompt $" { fail "print buf\[0\]"} |
| default { fail "print buf\[0\]"} |
| } |
| send_gdb "print buf\[1\]\n" |
| gdb_expect { |
| -re ".*= 50.*$gdb_prompt $" { set y [expr $y+1]; pass "print buf\[1\]"} |
| -re ".*= 0.*$gdb_prompt $" { pass "print buf\[1\]"} |
| -re ".*$gdb_prompt $" { fail "print buf\[1\]"} |
| default { fail "print buf\[1\]"} |
| } |
| send_gdb "print buf\[2\]\n" |
| gdb_expect { |
| -re ".*= 51.*$gdb_prompt $" { set y [expr $y+1]; pass "print buf\[2\]"} |
| -re ".*= 0.*$gdb_prompt $" { pass "print buf\[2\]"} |
| -re ".*$gdb_prompt $" { fail "print buf\[2\]"} |
| default { fail "print buf\[2\]"} |
| } |
| send_gdb "print buf\[3\]\n" |
| gdb_expect { |
| -re ".*= 10.*$gdb_prompt $" { set y [expr $y+1]; pass "print buf\[3\]"} |
| -re ".*= 0.*$gdb_prompt $" { pass "print buf\[3\]"} |
| -re ".*$gdb_prompt $" { fail "print buf\[3\]" } |
| default { fail "print buf\[3\]" } |
| } |
| |
| # Did we find what we were looking for? If not, flunk it. |
| if [expr $x==$y] then { pass $testname } else { fail "$testname (only triggered $x watchpoints, expected $y)"} |
| |
| # Continue until we hit the finishing marker function. |
| # Make sure we hit no more watchpoints. |
| gdb_test "cont" "Continuing.*Breakpoint.*marker4 \\(\\).*" \ |
| "continue to marker4" |
| |
| # Disable everything so we can finish the program at full speed |
| gdb_test "disable" "" "disable in test_watchpoint_triggered_in_syscall" |
| |
| if [target_info exists gdb,noresults] { return } |
| |
| gdb_continue_to_end "continue to exit in test_watchpoint_triggered_in_syscall" |
| } |
| } |
| |
| # Do a simple test of of watching through a pointer when the pointer |
| # itself changes. Should add some more complicated stuff here. |
| |
| proc test_complex_watchpoint {} { |
| global gdb_prompt |
| |
| if [runto marker4] then { |
| gdb_test "watch ptr1->val" ".*\[Ww\]atchpoint \[0-9\]*: ptr1->val" |
| gdb_test "break marker5" ".*Breakpoint.*" |
| |
| gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ptr1->val.*Old value = 1.*New value = 2.*" "Test complex watchpoint" |
| |
| # Continue until we hit the marker5 function. |
| # Make sure we hit no more watchpoints. |
| |
| gdb_test "cont" "Continuing.*Breakpoint.*marker5 \\(\\).*" \ |
| "did not trigger wrong watchpoint" |
| |
| # Disable everything so we can finish the program at full speed |
| gdb_test "disable" "" "disable in test_complex_watchpoint" |
| |
| if [target_info exists gdb,noresults] { return } |
| |
| |
| gdb_continue_to_end "continue to exit in test_complex_watchpoint" |
| } |
| } |
| |
| # Start with a fresh gdb. |
| |
| gdb_start |
| gdb_reinitialize_dir $srcdir/$subdir |
| gdb_load $binfile |
| set timeout 600 |
| verbose "Timeout now 600 sec.\n" |
| |
| if [initialize] then { |
| |
| test_simple_watchpoint |
| |
| # The IDT/sim monitor only has 8 (!) open files, of which it uses |
| # 4 (!). So we have to make sure one program exits before |
| # starting another one. |
| if [istarget "mips-idt-*"] then { |
| gdb_exit |
| gdb_start |
| gdb_reinitialize_dir $srcdir/$subdir |
| gdb_load $binfile |
| initialize |
| } |
| |
| test_disabling_watchpoints |
| |
| # See above. |
| if [istarget "mips-idt-*"] then { |
| gdb_exit |
| gdb_start |
| gdb_reinitialize_dir $srcdir/$subdir |
| gdb_load $binfile |
| initialize |
| } |
| |
| if ![target_info exists gdb,cannot_call_functions] { |
| test_stepping |
| |
| # See above. |
| if [istarget "mips-idt-*"] then { |
| gdb_exit |
| gdb_start |
| gdb_reinitialize_dir $srcdir/$subdir |
| gdb_load $binfile |
| initialize |
| } |
| } |
| |
| # Only enabled for some targets merely because it has not been tested |
| # elsewhere. |
| # On sparc-sun-sunos4.1.3, GDB was running all the way to the marker4 |
| # breakpoint before stopping for the watchpoint. I don't know why. |
| if {[istarget "hppa*-*-*"]} then { |
| test_watchpoint_triggered_in_syscall |
| } |
| |
| # See above. |
| if [istarget "mips-idt-*"] then { |
| gdb_exit |
| gdb_start |
| gdb_reinitialize_dir $srcdir/$subdir |
| gdb_load $binfile |
| initialize |
| } |
| |
| # Only enabled for some targets merely because it has not been tested |
| # elsewhere. |
| if {[istarget "hppa*-*-*"] || \ |
| [istarget "sparc*-*-sunos*"] || \ |
| [istarget "m32r-*-*"]} then { |
| test_complex_watchpoint |
| } |
| } |
