| # Copyright 1988-2021 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 <http://www.gnu.org/licenses/>. |
| |
| # 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 "failed to prepare" "hbreak2" {break.c break1.c} {debug nowarnings}] } { |
| return -1 |
| } |
| set srcfile break.c |
| set srcfile1 break1.c |
| |
| if ![runto_main] then { |
| return |
| } |
| |
| delete_breakpoints |
| |
| # |
| # Test whether the target supports hardware breakpoints at all. |
| # |
| gdb_test_multiple "hbreak -q 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 $" { |
| pass "hardware breakpoint insertion" |
| } |
| } |
| delete_breakpoints |
| |
| # |
| # Test simple hardware breakpoint setting commands. |
| # |
| |
| # |
| # Test break at function. |
| # |
| gdb_test "hbreak -q main" \ |
| "Hardware assisted breakpoint.*at.* file .*$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 -q main" \ |
| ".*main \\(int argc, char ..argv, char ..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_location6 [gdb_get_line_number "set breakpoint 6 here"] |
| |
| set main_line $bp_location6 |
| |
| set bp_location7 [gdb_get_line_number "set breakpoint 7 here"] |
| set bp_location8 [gdb_get_line_number "set breakpoint 8 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 -q 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.*" \ |
| "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 -q 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 { |
| return |
| } |
| |
| # 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 { |
| return |
| } |
| |
| 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" \ |
| "Invalid thread ID: foo" \ |
| "thread-specific hardware breakpoint on bogus thread ID disallowed" |
| |
| # Verify that GDB responds gracefully to a breakpoint command with |
| # trailing garbage. |
| # |
| gdb_test "hbreak $bp_location12 foo" \ |
| "malformed linespec error: unexpected string, \"foo\".*" \ |
| "hardware breakpoint with trailing garbage disallowed" |
| |
| # Verify that GDB responds gracefully to a "clear" command that has |
| # no matching breakpoint. (First, get us off the current source line, |
| # which we know has a breakpoint.) |
| # |
| gdb_test "next" "marker1.*" "step over hardware breakpoint" |
| |
| gdb_test "clear 81" "No breakpoint at 81.*" \ |
| "clear line has no breakpoint disallowed" |
| |
| gdb_test "clear" "No breakpoint at this line.*" \ |
| "clear current line has no breakpoint disallowed" |
| delete_breakpoints |
| |
| # Verify that a breakpoint can be set via a convenience variable. |
| # |
| gdb_test_no_output "set \$foo=$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.*" \ |
| "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. 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. |
| gdb_test "bt" \ |
| "#0\[ \t\]*($hex in )?marker2.*:$bp_location8\r\n#1\[ \t\]*<function called from gdb>.*" \ |
| "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 .*$bp_location8\r\n.*function called from gdb.*$gdb_prompt $" { |
| pass "finish from called function" |
| } |
| -re "Run till exit from .*marker2.* at .*$bp_location8\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 |
| gdb_test "" \ |
| "Break.* factorial .value=6. .*" \ |
| "run to factorial(6)" |
| |
| # Continue until we call factorial recursively with 5. |
| |
| gdb_test "continue" \ |
| "Continuing.*Break.* factorial .value=5. .*" \ |
| "continue to factorial(5)" |
| |
| # Do a backtrace just to confirm how many levels deep we are. |
| |
| gdb_test "backtrace" \ |
| "#0\[ \t\]+ factorial .value=5..*" \ |
| "backtrace from factorial(5)" |
| |
| # Now a "next" should position us at the recursive call, which |
| # we will be performing with 4. |
| |
| gdb_test "next" \ |
| ".* factorial .value - 1.;.*" \ |
| "next to recursive call" |
| |
| # 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. |
| |
| 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 { ![target_info exists gdb,noresults] } { |
| gdb_continue_to_end "recursive next test" |
| } |
| } |
| |
| 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 "failed to prepare" "hbreak2o2" {break.c break1.c} {debug nowarnings optimize=-O2}] } { |
| return -1 |
| } |
| |
| if ![runto_main] then { |
| return |
| } |
| |
| delete_breakpoints |
| |
| # |
| # Test break at function. |
| # |
| gdb_test "hbreak -q 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_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_location14\[\r\n\]+$bp_location14\[\t \]+void marker4.*" { |
| 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" |
| } |
| } |
