584 lines
20 KiB
Text
584 lines
20 KiB
Text
# Copyright 1988-2022 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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# Based on break.exp by Rob Savoye. (rob@cygnus.com)
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# Hardware breakpoint support by Maciej W. Rozycki and Daniel Jacobowitz.
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# Only one hardware breakpoint is set at a time as targets may limit
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# the number available.
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if { [prepare_for_testing "failed to prepare" "hbreak2" {break.c break1.c} {debug nowarnings}] } {
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return -1
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}
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set srcfile break.c
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set srcfile1 break1.c
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if ![runto_main] then {
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return
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}
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delete_breakpoints
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#
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# Test whether the target supports hardware breakpoints at all.
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#
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gdb_test_multiple "hbreak -q main" "hardware breakpoint support" {
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-re "No hardware breakpoint support in the target.*$gdb_prompt $" {
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unsupported "hardware breakpoints"
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return
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}
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-re "Hardware breakpoints used exceeds limit.*$gdb_prompt $" {
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unsupported "hardware breakpoints"
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return
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}
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-re "Hardware assisted breakpoint.*at.* file .*$srcfile, line.*$gdb_prompt $" {
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pass "hardware breakpoint support"
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}
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}
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gdb_run_cmd
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gdb_test_multiple "" "hardware breakpoint insertion" {
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-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 $" {
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unsupported "hardware breakpoint insertion"
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return
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}
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-re "Breakpoint \[0-9\]+,.*main .*argc.*argv.* at .*$srcfile:.*\[\r\n\]+.*\[\t \]+if .argc.* \{.*$gdb_prompt $" {
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pass "hardware breakpoint insertion"
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}
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}
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delete_breakpoints
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#
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# Test simple hardware breakpoint setting commands.
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#
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#
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# Test break at function.
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#
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gdb_test "hbreak -q main" \
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"Hardware assisted breakpoint.*at.* file .*$srcfile, line.*" \
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"hardware breakpoint function"
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delete_breakpoints
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#
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# Test break at quoted function.
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#
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gdb_test "hbreak \"marker2\"" \
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"Hardware assisted breakpoint.*at.* file .*$srcfile1, line.*" \
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"hardware breakpoint quoted function"
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delete_breakpoints
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#
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# Test break at function in file.
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#
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gdb_test "hbreak $srcfile:factorial" \
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"Hardware assisted breakpoint.*at.* file .*$srcfile, line.*" \
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"hardware breakpoint function in file"
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delete_breakpoints
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set bp_location1 [gdb_get_line_number "set breakpoint 1 here"]
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#
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# Test break at line number.
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#
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# Note that the default source file is the last one whose source text
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# was printed. For native debugging, before we've executed the
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# program, this is the file containing main, but for remote debugging,
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# it's wherever the processor was stopped when we connected to the
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# board. So, to be sure, we do a list command.
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#
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gdb_test "list -q main" \
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".*main \\(int argc, char ..argv, char ..envp\\).*" \
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"use `list' to establish default source file"
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gdb_test "hbreak $bp_location1" \
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"Hardware assisted breakpoint.*at.* file .*$srcfile, line $bp_location1\\." \
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"hardware breakpoint line number"
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delete_breakpoints
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set bp_location2 [gdb_get_line_number "set breakpoint 2 here"]
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#
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# Test break at line number in file.
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#
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gdb_test "hbreak $srcfile:$bp_location2" \
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"Hardware assisted breakpoint.*at.* file .*$srcfile, line $bp_location2\\." \
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"hardware breakpoint line number in file"
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delete_breakpoints
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set bp_location3 [gdb_get_line_number "set breakpoint 3 here"]
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set bp_location4 [gdb_get_line_number "set breakpoint 4 here"]
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#
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# Test putting a break at the start of a multi-line if conditional.
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# Verify the breakpoint was put at the start of the conditional.
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#
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gdb_test "hbreak multi_line_if_conditional" \
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"Hardware assisted breakpoint.*at.* file .*$srcfile, line $bp_location3\\." \
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"hardware breakpoint at start of multi line if conditional"
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delete_breakpoints
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gdb_test "hbreak multi_line_while_conditional" \
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"Hardware assisted breakpoint.*at.* file .*$srcfile, line $bp_location4\\." \
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"hardware breakpoint at start of multi line while conditional"
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set bp_location6 [gdb_get_line_number "set breakpoint 6 here"]
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set main_line $bp_location6
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set bp_location7 [gdb_get_line_number "set breakpoint 7 here"]
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set bp_location8 [gdb_get_line_number "set breakpoint 8 here" $srcfile1]
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gdb_test "info break" \
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"Num Type\[ \]+Disp Enb Address\[ \]+What.*
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\[0-9\]+\[\t \]+hw breakpoint keep y.* in multi_line_while_conditional at .*$srcfile:$bp_location4" \
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"hardware breakpoint info"
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delete_breakpoints
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#
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# Run until the breakpoint at main is hit. For non-stubs-using targets.
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#
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gdb_test "hbreak -q main" \
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"Hardware assisted breakpoint.*at.* file .*$srcfile, line.*" \
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"hardware breakpoint function (2)"
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gdb_run_cmd
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gdb_test "" \
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"Breakpoint \[0-9\]+,.*main .*argc.*argv.* at .*$srcfile:$bp_location6.*$bp_location6\[\t \]+if .argc.* \{.*" \
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"run until function breakpoint"
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delete_breakpoints
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#
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# Run until the breakpoint at a line number.
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#
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gdb_test "hbreak $bp_location1" \
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"Hardware assisted breakpoint.*at.* file .*$srcfile, line $bp_location1\\." \
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"hardware breakpoint line number (2)"
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gdb_test "continue" \
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"Continuing\\..*Breakpoint \[0-9\]+, main \\(argc=.*, argv=.*, envp=.*\\) at .*$srcfile:$bp_location1.*$bp_location1\[\t \]+printf.*factorial.*" \
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"run until breakpoint set at a line number"
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delete_breakpoints
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#
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# Run until the breakpoint set in a function in a file.
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#
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gdb_test "hbreak $srcfile:factorial" \
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"Hardware assisted breakpoint.*at.* file .*$srcfile, line.*" \
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"hardware breakpoint function in file (2)"
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for {set i 6} {$i >= 1} {incr i -1} {
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gdb_test "continue" \
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"Continuing\\..*Breakpoint \[0-9\]+, factorial \\(value=$i\\) at .*$srcfile:$bp_location7.*$bp_location7\[\t \]+.*if .value > 1. \{.*" \
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"run until file:function($i) breakpoint"
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}
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delete_breakpoints
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#
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# Run until the breakpoint set at a quoted function.
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#
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gdb_test "hbreak \"marker2\"" \
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"Hardware assisted breakpoint.*at.* file .*$srcfile1, line.*" \
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"hardware breakpoint quoted function (2)"
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gdb_test "continue" \
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"Continuing\\..*Breakpoint \[0-9\]+, (0x\[0-9a-f\]+ in )?marker2 \\(a=43\\) at .*$srcfile1:$bp_location8.*" \
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"run until quoted breakpoint"
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delete_breakpoints
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#
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# Run until the file:function breakpoint at a line number in a file.
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#
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gdb_test "hbreak $srcfile:$bp_location2" \
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"Hardware assisted breakpoint.*at.* file .*$srcfile, line $bp_location2\\." \
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"hardware breakpoint line number in file (2)"
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gdb_test "continue" \
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"Continuing\\..*Breakpoint \[0-9\]+, main \\(argc=.*, argv=.*, envp=.*\\) at .*$srcfile:$bp_location2.*$bp_location2\[\t \]+argc = \\(argc == 12345\\);.*" \
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"run until file:linenum breakpoint"
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delete_breakpoints
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# Test break at offset +1.
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set bp_location10 [gdb_get_line_number "set breakpoint 10 here"]
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gdb_test "hbreak +1" \
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"Hardware assisted breakpoint.*at.* file .*$srcfile, line $bp_location10\\." \
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"hardware breakpoint offset +1"
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# Check to see if breakpoint is hit when stepped onto.
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gdb_test "step" \
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".*Breakpoint \[0-9\]+, main \\(argc=.*, argv=.*, envp=.*\\) at .*$srcfile:$bp_location10.*$bp_location10\[\t \]+return argc;.*breakpoint 10 here.*" \
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"step onto hardware breakpoint"
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delete_breakpoints
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# Check to see if breakpoint can be set on ending brace of function.
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set bp_location10a [gdb_get_line_number "set breakpoint 10a here"]
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gdb_test "hbreak $bp_location10a" \
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"Hardware assisted breakpoint.*at.* file .*$srcfile, line $bp_location10a\\." \
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"setting hardware breakpoint at }"
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gdb_test "continue" \
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".*Breakpoint \[0-9\]+, main \\(argc=.*, argv=.*, envp=.*\\) at .*$srcfile:$bp_location10a.*$bp_location10a\[\t \]+}.*breakpoint 10a here.*" \
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"continue to hardware breakpoint at }"
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#
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# Delete all breakpoints so we can start over, course this can be a test too.
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#
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delete_breakpoints
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#
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# Test temporary breakpoint at function.
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#
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gdb_test "thbreak -q main" \
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"Hardware assisted breakpoint.*at.* file .*$srcfile, line.*" \
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"temporary hardware breakpoint function"
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delete_breakpoints
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#
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# Test break at function in file.
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#
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gdb_test "thbreak $srcfile:factorial" \
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"Hardware assisted breakpoint.*at.* file .*$srcfile, line.*" \
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"temporary hardware breakpoint function in file"
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delete_breakpoints
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#
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# Test break at line number.
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#
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gdb_test "thbreak $bp_location1" \
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"Hardware assisted breakpoint.*at.* file .*$srcfile, line $bp_location1.*" \
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"temporary hardware breakpoint line number #1"
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delete_breakpoints
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gdb_test "thbreak $bp_location6" \
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"Hardware assisted breakpoint.*at.* file .*$srcfile, line $bp_location6.*" \
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"temporary hardware breakpoint line number #2"
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delete_breakpoints
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#
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# Test break at line number in file.
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#
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gdb_test "thbreak $srcfile:$bp_location2" \
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"Hardware assisted breakpoint.*at.* file .*$srcfile, line $bp_location2.*" \
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"temporary hardware breakpoint line number in file #1"
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delete_breakpoints
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set bp_location11 [gdb_get_line_number "set breakpoint 11 here"]
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gdb_test "thbreak $srcfile:$bp_location11" \
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"Hardware assisted breakpoint.*at.* file .*$srcfile, line $bp_location11.*" \
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"temporary hardware breakpoint line number in file #2"
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#
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# Check to see what breakpoints are set (temporary this time).
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#
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gdb_test "info break" \
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"Num Type.*Disp Enb Address.*What.*\[\r\n\]
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\[0-9\]+\[\t \]+hw breakpoint del.*y.*in main at .*$srcfile:$bp_location11.*" \
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"temporary hardware breakpoint info"
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#***********
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if ![runto_main] then {
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return
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}
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# Verify that GDB responds gracefully when asked to set a breakpoint
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# on a nonexistent source line.
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#
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gdb_test_no_output "set breakpoint pending off"
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gdb_test "hbreak 999" \
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"No line 999 in the current file." \
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"hardware break on non-existent source line"
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# Run to the desired default location. If not positioned here, the
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# tests below don't work.
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#
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gdb_test "until $bp_location1" "main .* at .*:$bp_location1.*" \
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"until bp_location1"
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# Verify that GDB allows one to just say "hbreak", which is treated
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# as the "default" breakpoint.
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#
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gdb_test "hbreak" "Hardware assisted breakpoint \[0-9\]*.*" \
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"hardware break on default location"
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# Verify that a "silent" breakpoint can be set, and that GDB is indeed
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# "silent" about its triggering.
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#
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if ![runto_main] then {
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return
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}
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gdb_test_multiple "hbreak $bp_location1" \
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"set to-be-silent hardware break bp_location1" {
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-re "Hardware assisted breakpoint (\[0-9\]*) at .*, line $bp_location1.*$gdb_prompt $" {
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pass "set to-be-silent hardware break bp_location1"
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}
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}
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gdb_test "commands $expect_out(1,string)\nsilent\nend" ">end" "set silent break bp_location1"
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gdb_test "info break $expect_out(1,string)" \
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"\[0-9\]*\[ \t\]*hw breakpoint.*:$bp_location1\r\n\[ \t\]*silent.*" \
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"info silent hardware break bp_location1"
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gdb_test "continue" "Continuing." \
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"hit silent hardware break bp_location1"
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gdb_test "bt" "#0 main .* at .*:$bp_location1.*" \
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"stopped for silent hardware break bp_location1"
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# Verify that GDB can at least parse a breakpoint with the
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# "thread" keyword. (We won't attempt to test here that a
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# thread-specific breakpoint really triggers appropriately.
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# The gdb.threads subdirectory contains tests for that.)
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#
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set bp_location12 [gdb_get_line_number "set breakpoint 12 here"]
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gdb_test "hbreak $bp_location12 thread 999" "Unknown thread 999.*" \
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"thread-specific hardware breakpoint on non-existent thread disallowed"
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gdb_test "hbreak $bp_location12 thread foo" \
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"Invalid thread ID: foo" \
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"thread-specific hardware breakpoint on bogus thread ID disallowed"
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# Verify that GDB responds gracefully to a breakpoint command with
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# trailing garbage.
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#
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gdb_test "hbreak $bp_location12 foo" \
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"malformed linespec error: unexpected string, \"foo\".*" \
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"hardware breakpoint with trailing garbage disallowed"
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# Verify that GDB responds gracefully to a "clear" command that has
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# no matching breakpoint. (First, get us off the current source line,
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# which we know has a breakpoint.)
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#
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gdb_test "next" "marker1.*" "step over hardware breakpoint"
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gdb_test "clear 81" "No breakpoint at 81.*" \
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"clear line has no breakpoint disallowed"
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gdb_test "clear" "No breakpoint at this line.*" \
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"clear current line has no breakpoint disallowed"
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delete_breakpoints
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# Verify that a breakpoint can be set via a convenience variable.
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#
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gdb_test_no_output "set \$foo=$bp_location11" \
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"set convenience variable \$foo to bp_location11"
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gdb_test "hbreak \$foo" \
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"Hardware assisted breakpoint (\[0-9\]*) at .*, line $bp_location11.*" \
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"set hardware breakpoint via convenience variable"
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delete_breakpoints
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# Verify that GDB responds gracefully to an attempt to set a
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# breakpoint via a convenience variable whose type is not integer.
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#
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gdb_test_no_output "set \$foo=81.5" \
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"set convenience variable \$foo to 81.5"
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gdb_test "hbreak \$foo" \
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"Convenience variables used in line specs must have integer values.*" \
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"set hardware breakpoint via non-integer convenience variable disallowed"
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# Verify that we can set and trigger a breakpoint in a user-called function.
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#
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gdb_test "hbreak marker2" \
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"Hardware assisted breakpoint (\[0-9\]*) at .*, line $bp_location8.*" \
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"set hardware breakpoint on to-be-called function"
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gdb_test "print marker2(99)" \
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"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.*" \
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"hit hardware breakpoint on called function"
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# As long as we're stopped (breakpointed) in a called function,
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# verify that we can successfully backtrace & such from here.
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gdb_test "bt" \
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"#0\[ \t\]*($hex in )?marker2.*:$bp_location8\r\n#1\[ \t\]*<function called from gdb>.*" \
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"backtrace while in called function"
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# Return from the called function. For remote targets, it's important to do
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# this before runto_main, which otherwise may silently stop on the dummy
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# breakpoint inserted by GDB at the program's entry point.
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#
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gdb_test_multiple "finish" "finish from called function" {
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-re "Run till exit from .*marker2.* at .*$bp_location8\r\n.*function called from gdb.*$gdb_prompt $" {
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pass "finish from called function"
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}
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-re "Run till exit from .*marker2.* at .*$bp_location8\r\n.*Value returned.*$gdb_prompt $" {
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pass "finish from called function"
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}
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}
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#********
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#
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# Test "next" over recursive function call.
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#
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proc test_next_with_recursion {} {
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global gdb_prompt
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global decimal
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global binfile
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delete_breakpoints
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# Can't set a hardware breakpoint without a live target, so do it now
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# before it's killed below.
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gdb_test "hbreak factorial" \
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"Hardware assisted breakpoint $decimal at .*" \
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"hardware break at factorial"
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gdb_test "kill" "" "kill program" \
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"Kill the program being debugged.*y or n. $" "y"
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# Run until we call factorial with 6
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gdb_run_cmd
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gdb_test "" \
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"Break.* factorial .value=6. .*" \
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"run to factorial(6)"
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# Continue until we call factorial recursively with 5.
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gdb_test "continue" \
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"Continuing.*Break.* factorial .value=5. .*" \
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"continue to factorial(5)"
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# Do a backtrace just to confirm how many levels deep we are.
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gdb_test "backtrace" \
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"#0\[ \t\]+ factorial .value=5..*" \
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"backtrace from factorial(5)"
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# Now a "next" should position us at the recursive call, which
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# we will be performing with 4.
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|
|
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"
|
|
}
|
|
}
|