From: Maciej W. Rozycki Date: Thu, 1 Mar 2012 21:01:11 +0000 (+0000) Subject: * gdb.base/hbreak2.exp: New test for "hbreak" and "thbreak". X-Git-Tag: cygwin-1_7_12-release~202 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=320b6f49d351803291509841a4930287597cd775;p=external%2Fbinutils.git * gdb.base/hbreak2.exp: New test for "hbreak" and "thbreak". --- diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog index 6382543..98c7675 100644 --- a/gdb/testsuite/ChangeLog +++ b/gdb/testsuite/ChangeLog @@ -1,3 +1,9 @@ +2012-03-01 Maciej W. Rozycki + Maciej W. Rozycki + Daniel Jacobowitz + + * gdb.base/hbreak2.exp: New test for "hbreak" and "thbreak". + 2012-03-01 Pedro Alves PR gdb/13767 diff --git a/gdb/testsuite/gdb.base/hbreak2.exp b/gdb/testsuite/gdb.base/hbreak2.exp new file mode 100644 index 0000000..c4a18cd --- /dev/null +++ b/gdb/testsuite/gdb.base/hbreak2.exp @@ -0,0 +1,604 @@ +# Copyright 1988, 1990-1992, 1994-2000, 2002-2003, 2007-2012 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 . + +# Based on break.exp by Rob Savoye. (rob@cygnus.com) +# Hardware breakpoint support by Maciej W. Rozycki and Daniel Jacobowitz. +# Only one hardware breakpoint is set at a time as targets may limit +# the number available. + + +if { [prepare_for_testing hbreak2.exp "hbreak2" {break.c break1.c} {debug nowarnings}] } { + return -1 +} +set srcfile break.c +set srcfile1 break1.c + +if ![runto_main] then { fail "break tests suppressed" } +delete_breakpoints + +# +# Test whether the target supports hardware breakpoints at all. +# +gdb_test_multiple "hbreak main" "hardware breakpoint support" { + -re "No hardware breakpoint support in the target.*$gdb_prompt $" { + unsupported "hardware breakpoints" + return + } + -re "Hardware breakpoints used exceeds limit.*$gdb_prompt $" { + unsupported "hardware breakpoints" + return + } + -re "Hardware assisted breakpoint.*at.* file .*$srcfile, line.*$gdb_prompt $" { + pass "hardware breakpoint support" + } +} +gdb_run_cmd +gdb_test_multiple "" "hardware breakpoint insertion" { + -re "Warning:\[\r\n\]+Cannot insert hardware breakpoint \[0-9\]+\.\[\r\n\]+Could not insert hardware breakpoints:\[\r\n\]+You may have requested too many hardware breakpoints/watchpoints\.\[\r\n\]+.*$gdb_prompt $" { + unsupported "hardware breakpoint insertion" + return + } + -re "Breakpoint \[0-9\]+,.*main .*argc.*argv.* at .*$srcfile:.*\[\r\n\]+.*\[\t \]+if .argc.* \{.*$gdb_prompt $" { + pass "hardware breakpoint insertion" + } +} +delete_breakpoints + +# +# Test simple hardware breakpoint setting commands. +# + +# +# Test break at function. +# +gdb_test "hbreak main" \ + "Hardware assisted breakpoint.*at.* file .*$srcfile, line.*" \ + "hardware breakpoint function" +delete_breakpoints + +# +# Test break at quoted function. +# +gdb_test "hbreak \"marker2\"" \ + "Hardware assisted breakpoint.*at.* file .*$srcfile1, line.*" \ + "hardware breakpoint quoted function" +delete_breakpoints + +# +# Test break at function in file. +# +gdb_test "hbreak $srcfile:factorial" \ + "Hardware assisted breakpoint.*at.* file .*$srcfile, line.*" \ + "hardware breakpoint function in file" +delete_breakpoints + +set bp_location1 [gdb_get_line_number "set breakpoint 1 here"] + +# +# Test break at line number. +# +# Note that the default source file is the last one whose source text +# was printed. For native debugging, before we've executed the +# program, this is the file containing main, but for remote debugging, +# it's wherever the processor was stopped when we connected to the +# board. So, to be sure, we do a list command. +# +gdb_test "list main" \ + ".*main \\(argc, argv, envp\\).*" \ + "use `list' to establish default source file" +gdb_test "hbreak $bp_location1" \ + "Hardware assisted breakpoint.*at.* file .*$srcfile, line $bp_location1\\." \ + "hardware breakpoint line number" +delete_breakpoints + +set bp_location2 [gdb_get_line_number "set breakpoint 2 here"] + +# +# Test break at line number in file. +# +gdb_test "hbreak $srcfile:$bp_location2" \ + "Hardware assisted breakpoint.*at.* file .*$srcfile, line $bp_location2\\." \ + "hardware breakpoint line number in file" +delete_breakpoints + +set bp_location3 [gdb_get_line_number "set breakpoint 3 here"] +set bp_location4 [gdb_get_line_number "set breakpoint 4 here"] + +# +# Test putting a break at the start of a multi-line if conditional. +# Verify the breakpoint was put at the start of the conditional. +# +gdb_test "hbreak multi_line_if_conditional" \ + "Hardware assisted breakpoint.*at.* file .*$srcfile, line $bp_location3\\." \ + "hardware breakpoint at start of multi line if conditional" +delete_breakpoints + +gdb_test "hbreak multi_line_while_conditional" \ + "Hardware assisted breakpoint.*at.* file .*$srcfile, line $bp_location4\\." \ + "hardware breakpoint at start of multi line while conditional" + +set bp_location5 [gdb_get_line_number "set breakpoint 5 here"] +set bp_location6 [gdb_get_line_number "set breakpoint 6 here"] + +set main_line $bp_location6 + +if {$hp_aCC_compiler} { + set proto "\\(int\\)" +} else { + set proto "" +} + +set bp_location7 [gdb_get_line_number "set breakpoint 7 here"] +set bp_location8 [gdb_get_line_number "set breakpoint 8 here" $srcfile1] +set bp_location9 [gdb_get_line_number "set breakpoint 9 here" $srcfile1] + +gdb_test "info break" \ + "Num Type\[ \]+Disp Enb Address\[ \]+What.* +\[0-9\]+\[\t \]+hw breakpoint keep y.* in multi_line_while_conditional at .*$srcfile:$bp_location4" \ + "hardware breakpoint info" +delete_breakpoints + +# +# Run until the breakpoint at main is hit. For non-stubs-using targets. +# +gdb_test "hbreak main" \ + "Hardware assisted breakpoint.*at.* file .*$srcfile, line.*" \ + "hardware breakpoint function (2)" +gdb_run_cmd +gdb_test "" \ + "Breakpoint \[0-9\]+,.*main .*argc.*argv.* at .*$srcfile:$bp_location6.*$bp_location6\[\t \]+if .argc.* \{.*" \ + "run until function breakpoint" +delete_breakpoints + +# +# Run until the breakpoint at a line number. +# +gdb_test "hbreak $bp_location1" \ + "Hardware assisted breakpoint.*at.* file .*$srcfile, line $bp_location1\\." \ + "hardware breakpoint line number (2)" +gdb_test "continue" \ + "Continuing\\..*Breakpoint \[0-9\]+, main \\(argc=.*, argv=.*, envp=.*\\) at .*$srcfile:$bp_location1.*$bp_location1\[\t \]+printf.*factorial.*" \ + "run until breakpoint set at a line number" +delete_breakpoints + +# +# Run until the breakpoint set in a function in a file. +# +gdb_test "hbreak $srcfile:factorial" \ + "Hardware assisted breakpoint.*at.* file .*$srcfile, line.*" \ + "hardware breakpoint function in file (2)" +for {set i 6} {$i >= 1} {incr i -1} { + gdb_test "continue" \ + "Continuing\\..*Breakpoint \[0-9\]+, factorial \\(value=$i\\) at .*$srcfile:$bp_location7.*$bp_location7\[\t \]+.*if .value > 1. \{.*" \ + "run until file:function($i) breakpoint" +} +delete_breakpoints + +# +# Run until the breakpoint set at a quoted function. +# +gdb_test "hbreak \"marker2\"" \ + "Hardware assisted breakpoint.*at.* file .*$srcfile1, line.*" \ + "hardware breakpoint quoted function (2)" +gdb_test "continue" \ + "Continuing\\..*Breakpoint \[0-9\]+, (0x\[0-9a-f\]+ in )?marker2 \\(a=43\\) at .*$srcfile1:($bp_location8|$bp_location9).*" \ + "run until quoted breakpoint" +delete_breakpoints +# +# Run until the file:function breakpoint at a line number in a file. +# +gdb_test "hbreak $srcfile:$bp_location2" \ + "Hardware assisted breakpoint.*at.* file .*$srcfile, line $bp_location2\\." \ + "hardware breakpoint line number in file (2)" +gdb_test "continue" \ + "Continuing\\..*Breakpoint \[0-9\]+, main \\(argc=.*, argv=.*, envp=.*\\) at .*$srcfile:$bp_location2.*$bp_location2\[\t \]+argc = \\(argc == 12345\\);.*" \ + "run until file:linenum breakpoint" +delete_breakpoints + +# Test break at offset +1. +set bp_location10 [gdb_get_line_number "set breakpoint 10 here"] + +gdb_test "hbreak +1" \ + "Hardware assisted breakpoint.*at.* file .*$srcfile, line $bp_location10\\." \ + "hardware breakpoint offset +1" + +# Check to see if breakpoint is hit when stepped onto. + +gdb_test "step" \ + ".*Breakpoint \[0-9\]+, main \\(argc=.*, argv=.*, envp=.*\\) at .*$srcfile:$bp_location10.*$bp_location10\[\t \]+return argc;.*breakpoint 10 here.*" \ + "step onto hardware breakpoint" +delete_breakpoints + +# Check to see if breakpoint can be set on ending brace of function. +set bp_location10a [gdb_get_line_number "set breakpoint 10a here"] + +gdb_test "hbreak $bp_location10a" \ + "Hardware assisted breakpoint.*at.* file .*$srcfile, line $bp_location10a\\." \ + "setting hardware breakpoint at }" + +gdb_test "continue" \ + ".*Breakpoint \[0-9\]+, main \\(argc=.*, argv=.*, envp=.*\\) at .*$srcfile:$bp_location10a.*$bp_location10a\[\t \]+}.*breakpoint 10a here.*" \ + "continue to hardware breakpoint at }" + +# +# Delete all breakpoints so we can start over, course this can be a test too. +# +delete_breakpoints + +# +# Test temporary breakpoint at function. +# + +gdb_test "thbreak main" \ + "Hardware assisted breakpoint.*at.* file .*$srcfile, line.*" \ + "temporary hardware breakpoint function" +delete_breakpoints + +# +# Test break at function in file. +# + +gdb_test "thbreak $srcfile:factorial" \ + "Hardware assisted breakpoint.*at.* file .*$srcfile, line.*" \ + "temporary hardware breakpoint function in file" +delete_breakpoints + +# +# Test break at line number. +# +gdb_test "thbreak $bp_location1" \ + "Hardware assisted breakpoint.*at.* file .*$srcfile, line $bp_location1.*" \ + "temporary hardware breakpoint line number #1" +delete_breakpoints + +gdb_test "thbreak $bp_location6" \ + "Hardware assisted breakpoint.*at.* file .*$srcfile, line $bp_location6.*" \ + "temporary hardware breakpoint line number #2" +delete_breakpoints + +# +# Test break at line number in file. +# +gdb_test "thbreak $srcfile:$bp_location2" \ + "Hardware assisted breakpoint.*at.* file .*$srcfile, line $bp_location2.*" \ + "temporary hardware breakpoint line number in file #1" +delete_breakpoints + +set bp_location11 [gdb_get_line_number "set breakpoint 11 here"] +gdb_test "thbreak $srcfile:$bp_location11" \ + "Hardware assisted breakpoint.*at.* file .*$srcfile, line $bp_location11.*" \ + "temporary hardware breakpoint line number in file #2" + +# +# Check to see what breakpoints are set (temporary this time). +# +gdb_test "info break" \ + "Num Type.*Disp Enb Address.*What.*\[\r\n\] +\[0-9\]+\[\t \]+hw breakpoint del.*y.*in main at .*$srcfile:$bp_location11.*" \ + "temporary hardware breakpoint info" + + +#*********** + +if ![runto_main] then { fail "break tests suppressed" } + +# Verify that GDB responds gracefully when asked to set a breakpoint +# on a nonexistent source line. +# +gdb_test_no_output "set breakpoint pending off" +gdb_test "hbreak 999" \ + "No line 999 in the current file." \ + "hardware break on non-existent source line" + +# Run to the desired default location. If not positioned here, the +# tests below don't work. +# +gdb_test "until $bp_location1" "main .* at .*:$bp_location1.*" \ + "until bp_location1" + + +# Verify that GDB allows one to just say "hbreak", which is treated +# as the "default" breakpoint. +# +gdb_test "hbreak" "Hardware assisted breakpoint \[0-9\]*.*" \ + "hardware break on default location" + +# Verify that a "silent" breakpoint can be set, and that GDB is indeed +# "silent" about its triggering. +# +if ![runto_main] then { fail "break tests suppressed" } + +gdb_test_multiple "hbreak $bp_location1" \ + "set to-be-silent hardware break bp_location1" { + -re "Hardware assisted breakpoint (\[0-9\]*) at .*, line $bp_location1.*$gdb_prompt $" { + pass "set to-be-silent hardware break bp_location1" + } + } + +gdb_test "commands $expect_out(1,string)\nsilent\nend" ">end" "set silent break bp_location1" + +gdb_test "info break $expect_out(1,string)" \ + "\[0-9\]*\[ \t\]*hw breakpoint.*:$bp_location1\r\n\[ \t\]*silent.*" \ + "info silent hardware break bp_location1" + +gdb_test "continue" "Continuing." \ + "hit silent hardware break bp_location1" + +gdb_test "bt" "#0 main .* at .*:$bp_location1.*" \ + "stopped for silent hardware break bp_location1" + +# Verify that GDB can at least parse a breakpoint with the +# "thread" keyword. (We won't attempt to test here that a +# thread-specific breakpoint really triggers appropriately. +# The gdb.threads subdirectory contains tests for that.) +# +set bp_location12 [gdb_get_line_number "set breakpoint 12 here"] +gdb_test "hbreak $bp_location12 thread 999" "Unknown thread 999.*" \ + "thread-specific hardware breakpoint on non-existent thread disallowed" + +gdb_test "hbreak $bp_location12 thread foo" \ + "Junk after thread keyword.*" \ + "thread-specific hardware breakpoint on bogus thread ID disallowed" + +# Verify that GDB responds gracefully to a breakpoint command with +# trailing garbage. +# +gdb_test "hbreak $bp_location12 foo" \ + "Junk at end of arguments.*" \ + "hardware breakpoint with trailing garbage disallowed" + +# Verify that GDB responds gracefully to a "clear" command that has +# no matching breakpoint. (First, get us off the current source line, +# which we know has a breakpoint.) +# +gdb_test "next" "marker1.*" "step over hardware breakpoint" + +gdb_test "clear 81" "No breakpoint at 81.*" \ + "clear line has no breakpoint disallowed" + +gdb_test "clear" "No breakpoint at this line.*" \ + "clear current line has no breakpoint disallowed" +delete_breakpoints + +# Verify that a breakpoint can be set via a convenience variable. +# +gdb_test_no_output "set \$foo=$bp_location11" \ + "set convenience variable \$foo to bp_location11" + +gdb_test "hbreak \$foo" \ + "Hardware assisted breakpoint (\[0-9\]*) at .*, line $bp_location11.*" \ + "set hardware breakpoint via convenience variable" +delete_breakpoints + +# Verify that GDB responds gracefully to an attempt to set a +# breakpoint via a convenience variable whose type is not integer. +# +gdb_test_no_output "set \$foo=81.5" \ + "set convenience variable \$foo to 81.5" + +gdb_test "hbreak \$foo" \ + "Convenience variables used in line specs must have integer values.*" \ + "set hardware breakpoint via non-integer convenience variable disallowed" + +# Verify that we can set and trigger a breakpoint in a user-called function. +# +gdb_test "hbreak marker2" \ + "Hardware assisted breakpoint (\[0-9\]*) at .*, line ($bp_location8|$bp_location9).*" \ + "set hardware breakpoint on to-be-called function" + +gdb_test "print marker2(99)" \ + "The program being debugged stopped while in a function called from GDB.\r\nEvaluation of the expression containing the function\r\n.marker2$proto. will be abandoned.\r\nWhen the function is done executing, GDB will silently stop.*" \ + "hit hardware breakpoint on called function" + +# As long as we're stopped (breakpointed) in a called function, +# verify that we can successfully backtrace & such from here. +# +# In this and the following test, the _sr4export check apparently is needed +# for hppa*-*-hpux. +# +gdb_test_multiple "bt" "backtrace while in called function" { + -re "#0\[ \t\]*($hex in )?marker2.*:($bp_location8|$bp_location9)\r\n#1.*_sr4export.*$gdb_prompt $" { + pass "backtrace while in called function" + } + -re "#0\[ \t\]*($hex in )?marker2.*:($bp_location8|$bp_location9)\r\n#1.*function called from gdb.*$gdb_prompt $" { + pass "backtrace while in called function" + } +} + +# Return from the called function. For remote targets, it's important to do +# this before runto_main, which otherwise may silently stop on the dummy +# breakpoint inserted by GDB at the program's entry point. +# +gdb_test_multiple "finish" "finish from called function" { + -re "Run till exit from .*marker2.* at .*($bp_location8|$bp_location9)\r\n.* in _sr4export.*$gdb_prompt $" { + pass "finish from called function" + } + -re "Run till exit from .*marker2.* at .*($bp_location8|$bp_location9)\r\n.*function called from gdb.*$gdb_prompt $" { + pass "finish from called function" + } + -re "Run till exit from .*marker2.* at .*($bp_location8|$bp_location9)\r\n.*Value returned.*$gdb_prompt $" { + pass "finish from called function" + } +} + +#******** + + +# +# Test "next" over recursive function call. +# + +proc test_next_with_recursion {} { + global gdb_prompt + global decimal + global binfile + + delete_breakpoints + + # Can't set a hardware breakpoint without a live target, so do it now + # before it's killed below. + gdb_test "hbreak factorial" \ + "Hardware assisted breakpoint $decimal at .*" \ + "hardware break at factorial" + + gdb_test "kill" "" "kill program" \ + "Kill the program being debugged.*y or n. $" "y" + + # Run until we call factorial with 6 + + gdb_run_cmd + if [gdb_test "" \ + "Break.* factorial .value=6. .*" \ + "run to factorial(6)"] then { gdb_suppress_tests } + + # Continue until we call factorial recursively with 5. + + if [gdb_test "continue" \ + "Continuing.*Break.* factorial .value=5. .*" \ + "continue to factorial(5)"] then { gdb_suppress_tests } + + # Do a backtrace just to confirm how many levels deep we are. + + if [gdb_test "backtrace" \ + "#0\[ \t\]+ factorial .value=5..*" \ + "backtrace from factorial(5)"] then { gdb_suppress_tests } + + # Now a "next" should position us at the recursive call, which + # we will be performing with 4. + + if [gdb_test "next" \ + ".* factorial .value - 1.;.*" \ + "next to recursive call"] then { gdb_suppress_tests } + + # Disable the breakpoint at the entry to factorial by deleting them all. + # The "next" should run until we return to the next line from this + # recursive call to factorial with 4. + # Buggy versions of gdb will stop instead at the innermost frame on + # the line where we are trying to "next" to. + + delete_breakpoints + + if [istarget "mips*tx39-*"] { + set timeout 60 + } + # We used to set timeout here for all other targets as well. This + # is almost certainly wrong. The proper timeout depends on the + # target system in use, and how we communicate with it, so there + # is no single value appropriate for all targets. The timeout + # should be established by the Dejagnu config file(s) for the + # board, and respected by the test suite. + # + # For example, if I'm running GDB over an SSH tunnel talking to a + # portmaster in California talking to an ancient 68k board running + # a crummy ROM monitor (a situation I can only wish were + # hypothetical), then I need a large timeout. But that's not the + # kind of knowledge that belongs in this file. + + gdb_test next "\[0-9\]*\[\t \]+return \\(value\\);.*" \ + "next over recursive call" + + # OK, we should be back in the same stack frame we started from. + # Do a backtrace just to confirm. + + set result [gdb_test "backtrace" \ + "#0\[ \t\]+ factorial .value=120.*\r\n#1\[ \t\]+ \[0-9a-fx\]+ in factorial .value=6..*" \ + "backtrace from factorial(5.1)"] + if { $result != 0 } { gdb_suppress_tests } + + if [target_info exists gdb,noresults] { gdb_suppress_tests } + gdb_continue_to_end "recursive next test" + gdb_stop_suppressing_tests; +} + +test_next_with_recursion + + +#******** + +# Build a new file with optimization enabled so that we can try breakpoints +# on targets with optimized prologues. + +if { [prepare_for_testing hbreak2.exp "hbreak2o2" {break.c break1.c} {debug nowarnings optimize=-O2}] } { + return -1 +} + +if ![runto_main] then { fail "break tests suppressed" } +delete_breakpoints + +# +# Test break at function. +# +gdb_test "hbreak main" \ + "Hardware assisted breakpoint.*at.* file .*, line.*" \ + "hardware breakpoint function, optimized file" + +# +# Run until the breakpoint at main is hit. For non-stubs-using targets. +# +gdb_run_cmd +gdb_test_multiple "" "run until hardware function breakpoint, optimized file" { + -re "Breakpoint \[0-9\]+,.*main .*argc.*argv.* at .*$srcfile:$bp_location6.*$bp_location6\[\t \]+if .argc.* \{.*$gdb_prompt $" { + pass "run until hardware function breakpoint, optimized file" + } + -re "Breakpoint \[0-9\]+,.*main .*argc.*argv.* at .*$gdb_prompt $" { + pass "run until hardware function breakpoint, optimized file (code motion)" + } +} +delete_breakpoints + +# +# Test break at function. +# +gdb_test "hbreak marker4" \ + "Hardware assisted breakpoint.*at.* file .*$srcfile1, line.*" \ + "hardware breakpoint small function, optimized file" + +# +# Run until the breakpoint at a small function. +# + +# +# Add a second pass pattern. The behavior differs here between stabs +# and dwarf for one-line functions. Stabs preserves two line symbols +# (one before the prologue and one after) with the same line number, +# but dwarf regards these as duplicates and discards one of them. +# Therefore the address after the prologue (where the breakpoint is) +# has no exactly matching line symbol, and GDB reports the breakpoint +# as if it were in the middle of a line rather than at the beginning. + +set bp_location13 [gdb_get_line_number "set breakpoint 13 here" $srcfile1] +set bp_location14 [gdb_get_line_number "set breakpoint 14 here" $srcfile1] + +gdb_test_multiple "continue" \ + "run until hardware breakpoint set at small function, optimized file" { + -re "Breakpoint $decimal, marker4 \\(d=(d@entry=)?177601976\\) at .*$srcfile1:$bp_location13\[\r\n\]+$bp_location13\[\t \]+void marker4.*" { + pass "run until hardware breakpoint set at small function, optimized file" + } + -re "Breakpoint $decimal, $hex in marker4 \\(d=(d@entry=)?177601976\\) at .*$srcfile1:$bp_location13\[\r\n\]+$bp_location13\[\t \]+void marker4.*" { + pass "run until hardware breakpoint set at small function, optimized file" + } + -re "Breakpoint $decimal, marker4 \\(d=(d@entry=)?177601976\\) at .*$srcfile1:$bp_location14\[\r\n\]+$bp_location14\[\t \]+void marker4.*" { + # marker4() is defined at line 46 when compiled with -DPROTOTYPES + pass "run until hardware breakpoint set at small function, optimized file (line bp_location14)" + } + -re "Breakpoint $decimal, factorial \\(.*\\) .*\{\r\n$gdb_prompt" { + # GCC 4.3 emits bad line number information - see gcc/36748. + if { [test_compiler_info "gcc-4-3-*"] } { + setup_xfail *-*-* + } + fail "run until hardware breakpoint set at small function, optimized file" + } +}