253 lines
7.3 KiB
Plaintext
253 lines
7.3 KiB
Plaintext
# Copyright 2011-2015 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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load_lib "trace-support.exp"
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standard_testfile
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set executable $testfile
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set expfile $testfile.exp
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# Some targets have leading underscores on assembly symbols.
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set additional_flags [gdb_target_symbol_prefix_flags]
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if [prepare_for_testing $expfile $executable $srcfile \
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[list debug $additional_flags]] {
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untested "failed to prepare for trace tests"
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return -1
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}
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if ![runto_main] {
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fail "Can't run to main to check for trace support"
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return -1
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}
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if ![gdb_target_supports_trace] {
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unsupported "target does not support trace"
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return -1
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}
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set libipa [get_in_proc_agent]
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gdb_load_shlibs $libipa
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# Can't use prepare_for_testing, because that splits compiling into
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# building objects and then linking, and we'd fail with "linker input
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# file unused because linking not done" when building the object.
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if { [gdb_compile "$srcdir/$subdir/$srcfile" $binfile \
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executable [list debug $additional_flags shlib=$libipa] ] != "" } {
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untested "failed to compile ftrace tests"
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return -1
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}
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clean_restart ${executable}
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if ![runto_main] {
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fail "Can't run to main for ftrace tests"
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return 0
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}
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proc run_trace_experiment {} {
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gdb_test "continue" \
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".*Breakpoint \[0-9\]+, begin .*" \
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"advance to trace begin"
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gdb_test_no_output "tstart" "start trace experiment"
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gdb_test "continue" \
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".*Breakpoint \[0-9\]+, end .*" \
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"advance through tracing"
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gdb_test "tstatus" ".*Trace .*" "check on trace status"
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gdb_test "tstop" "" ""
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}
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proc test_fast_tracepoints {} {
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global gdb_prompt
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set fourgood 0
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gdb_test "break begin" ".*" ""
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gdb_test "break end" ".*" ""
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gdb_test "print gdb_agent_gdb_trampoline_buffer_error" ".*" ""
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if { [istarget "x86_64-*-*"] || [istarget "i\[34567\]86-*-*"] } {
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gdb_test "ftrace set_point" "Fast tracepoint .*" \
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"fast tracepoint at a long insn"
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gdb_trace_setactions "collect at set_point: define actions" \
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"" \
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"collect globvar, anarg" "^$"
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# Make a test of shorter fast tracepoints, 32-bit x86 only
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if { [istarget "i?86-*-*"] } {
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# A Linux target needs to be able to allocate trampolines in the
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# 16-bit range, check mmap_min_addr so we can warn testers.
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if { [istarget "i?86-*-linux*"] } {
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set minaddr [exec sh -c "cat /proc/sys/vm/mmap_min_addr"]
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if { [expr $minaddr > 64512] } {
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warning "mmap_min_addr > 64512, fast tracepoint will fail"
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warning "do \"sudo sysctl -w vm.mmap_min_addr=32768\" to adjust"
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}
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}
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gdb_test_multiple "ftrace four_byter" "set 4-byte fast tracepoint" {
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-re "May not have a fast tracepoint at .*\r\n$gdb_prompt $" {
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pass "4-byte fast tracepoint could not be set"
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}
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-re "Fast tracepoint .*\r\n$gdb_prompt $" {
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pass "4-byte fast tracepoint is set"
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set fourgood 1
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}
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}
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if { $fourgood } {
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gdb_trace_setactions "collect at four_byter: define actions" \
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"" \
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"collect globvar, anarg" "^$"
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}
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}
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run_trace_experiment
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gdb_test "tfind pc *set_point" "Found trace frame .*" \
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"tfind set_point frame, first time"
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setup_kfail "gdb/13808" "x86_64-*-linux*"
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gdb_test "print globvar" " = 1"
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gdb_test "tfind pc *set_point" "Found trace frame .*" \
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"tfind set_point frame, second time"
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setup_kfail "gdb/13808" "x86_64-*-linux*"
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gdb_test "print anarg" " = 200"
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gdb_test "tfind start" "Found trace frame .*" \
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"reset tfinding"
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if { $fourgood } {
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gdb_test "tfind pc *four_byter" "Found trace frame .*" \
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"tfind four_byter frame, first time"
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gdb_test "print anarg" " = 101" \
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"look at collected local, first time"
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gdb_test "tfind pc *four_byter" "Found trace frame .*" \
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"tfind four_byter frame, second time"
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gdb_test "print anarg" " = 201" \
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"look at collected local, second time"
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}
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# If debugging with the remote target, try force disabling the
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# fast tracepoints RSP feature, and confirm fast tracepoints
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# can no longer be downloaded.
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set test "fast tracepoint could not be downloaded with the feature disabled"
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if [gdb_is_target_remote] {
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gdb_test "set remote fast-tracepoints-packet off"
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gdb_test_multiple "tstart" $test {
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-re "warning: Target does not support fast tracepoints, downloading .* as regular tracepoint.*\r\n$gdb_prompt $" {
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pass $test
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}
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}
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} else {
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unsupported $test
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}
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}
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}
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# Test compiled-condition
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# CONDEXP is the condition expression to be compiled.
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# VAR is the variable to be collected for testing.
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# LIST is a list of expected values of VAR should be collected
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# based on the CONDEXP.
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proc test_ftrace_condition { condexp var list } \
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{ with_test_prefix "ond $condexp" \
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{
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global executable
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global hex
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clean_restart ${executable}
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if ![runto_main] {
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fail "Can't run to main to check for trace support"
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return -1
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}
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gdb_test "break end" ".*" ""
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gdb_test "tvariable \$tsv = 0"
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gdb_test "ftrace set_point if $condexp" "Fast tracepoint .*"
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gdb_trace_setactions "set action for tracepoint .*" "" \
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"collect $var" "^$"
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gdb_test_no_output "tstart" ""
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gdb_test "continue" "Continuing\\.\[ \r\n\]+Breakpoint.*" ""
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gdb_test_no_output "tstop" ""
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set i 0
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foreach expval $list {
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gdb_test "tfind" "Found trace frame $i, tracepoint .*" "tfind frame $i"
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gdb_test "print $var" "\\$\[0-9\]+ = $expval\[\r\n\]" "expect $expval"
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set i [expr $i + 1]
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}
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gdb_test "tfind" "Target failed to find requested trace frame\."
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}}
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gdb_reinitialize_dir $srcdir/$subdir
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if { [gdb_test "info sharedlibrary" ".*${libipa}.*" "IPA loaded"] != 0 } {
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untested "Could not find IPA lib loaded"
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return 1
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}
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test_fast_tracepoints
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# Test conditional goto and simple expression.
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test_ftrace_condition "globvar > 7" "globvar" { 8 9 10 }
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test_ftrace_condition "globvar < 4" "globvar" { 1 2 3 }
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test_ftrace_condition "globvar >= 7" "globvar" { 7 8 9 10 }
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test_ftrace_condition "globvar <= 4" "globvar" { 1 2 3 4 }
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test_ftrace_condition "globvar == 5" "globvar" { 5 }
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test_ftrace_condition "globvar != 5" "globvar" { 1 2 3 4 6 7 8 9 10 }
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test_ftrace_condition "globvar > 3 && globvar < 7" "globvar" { 4 5 6 }
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test_ftrace_condition "globvar < 3 || globvar > 7" "globvar" { 1 2 8 9 10 }
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test_ftrace_condition "(globvar << 2) + 1 == 29" "globvar" { 7 }
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test_ftrace_condition "(globvar >> 2) == 2" "globvar" { 8 9 10 }
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# Test emit_call by accessing trace state variables.
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test_ftrace_condition "(\$tsv = \$tsv + 2) > 10" "globvar" { 6 7 8 9 10 }
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# This expression is used for testing emit_reg.
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if [is_amd64_regs_target] {
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set arg0exp "\$rdi"
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} elseif [is_x86_like_target] {
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set arg0exp "*(int *) (\$ebp + 8)"
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} else {
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set arg0exp ""
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}
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if { "$arg0exp" != "" } {
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test_ftrace_condition "($arg0exp > 500)" "globvar" { 6 7 8 9 10 }
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}
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