-# Copyright 2011 Free Software Foundation, Inc.
+# Copyright 2011-2018 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
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
-load_lib "trace-support.exp";
+load_lib "trace-support.exp"
-set testfile "ftrace"
+if {[skip_shlib_tests]} {
+ return 0
+}
+
+standard_testfile
set executable $testfile
-set srcfile $testfile.c
-set binfile $objdir/$subdir/$testfile
set expfile $testfile.exp
# Some targets have leading underscores on assembly symbols.
set additional_flags [gdb_target_symbol_prefix_flags]
-if [prepare_for_testing $expfile $executable $srcfile \
+if ![gdb_trace_common_supports_arch] {
+ unsupported "no trace-common.h support for arch"
+ return -1
+}
+
+if [prepare_for_testing "failed to prepare" $executable $srcfile \
[list debug $additional_flags]] {
- untested "failed to prepare for trace tests"
return -1
}
if ![runto_main] {
- fail "Can't run to main to check for trace support"
+ fail "can't run to main to check for trace support"
return -1
}
return -1
}
-set libipa $objdir/../gdbserver/libinproctrace.so
-gdb_load_shlibs $libipa
+set libipa [get_in_proc_agent]
+set remote_libipa [gdb_load_shlib $libipa]
# Can't use prepare_for_testing, because that splits compiling into
# building objects and then linking, and we'd fail with "linker input
if { [gdb_compile "$srcdir/$subdir/$srcfile" $binfile \
executable [list debug $additional_flags shlib=$libipa] ] != "" } {
- untested "failed to compile ftrace tests"
+ untested "failed to compile"
return -1
}
clean_restart ${executable}
if ![runto_main] {
- fail "Can't run to main for ftrace tests"
+ fail "can't run to main for ftrace tests"
return 0
}
gdb_test_no_output "tstart" "start trace experiment"
- gdb_test "continue" \
- ".*Breakpoint \[0-9\]+, end .*" \
- "advance through tracing"
+ # Fast tracepoint can be set in signal handler, so gdb_collect in
+ # IPA shouldn't call any non-async-signal-safe functions. It is
+ # impractical to list all non-async-signal-safe functions, and set
+ # breakpoints on them, so choose malloc only in this test.
+ gdb_test "b -q malloc"
+
+ # Performance-wise, gdb_collect in IPA shouldn't call any syscall
+ # in order to keep fast tracepoint fast enough.
+ global gdb_prompt
+ set test "catch syscall"
+ gdb_test_multiple $test $test {
+ -re "The feature \'catch syscall\' is not supported.*\r\n$gdb_prompt $" {
+ }
+ -re ".*$gdb_prompt $" {
+ pass $test
+ }
+ }
+
+ global decimal
+ set test "advance through tracing"
+ gdb_test_multiple "continue" $test {
+ -re "Thread 2 .* hit Catchpoint $decimal \\(call to syscall .*\\).*\r\n$gdb_prompt $" {
+ # IPA starts a helper thread, which calls accept. Ignore it.
+ send_gdb "continue\n"
+ exp_continue
+ }
+ -re "Breakpoint $decimal, end .*$gdb_prompt $" {
+ pass $test
+ }
+ }
gdb_test "tstatus" ".*Trace .*" "check on trace status"
set fourgood 0
- gdb_test "break begin" ".*" ""
+ gdb_breakpoint "begin" qualified
- gdb_test "break end" ".*" ""
+ gdb_breakpoint "end" qualified
gdb_test "print gdb_agent_gdb_trampoline_buffer_error" ".*" ""
- if { [is_x86_like_target] } {
+ gdb_test "ftrace set_point" "Fast tracepoint .*" \
+ "fast tracepoint at a long insn"
- gdb_test "ftrace set_point" "Fast tracepoint .*" \
- "fast tracepoint at a long insn"
+ gdb_trace_setactions "collect at set_point: define actions" \
+ "" \
+ "collect globvar, anarg" "^$"
- gdb_trace_setactions "collect at set_point: define actions" \
- "" \
- "collect globvar, anarg" "^$"
+ # Make a test of shorter fast tracepoints, 32-bit x86 only
- # Make a test of shorter fast tracepoints, 32-bit x86 only
+ if { [istarget "i?86-*-*"] } {
- if { [istarget "i?86-*-*"] } {
+ # A Linux target needs to be able to allocate trampolines in the
+ # 16-bit range, check mmap_min_addr so we can warn testers.
+ if { [istarget "i?86-*-linux*"] } {
- # A Linux target needs to be able to allocate trampolines in the
- # 16-bit range, check mmap_min_addr so we can warn testers.
- if { [istarget "i?86-*-linux*"] } {
+ set minaddr [exec sh -c "cat /proc/sys/vm/mmap_min_addr"]
- set minaddr [exec sh -c "cat /proc/sys/vm/mmap_min_addr"]
+ if { [expr $minaddr > 64512] } {
+ warning "mmap_min_addr > 64512, fast tracepoint will fail"
+ warning "do \"sudo sysctl -w vm.mmap_min_addr=32768\" to adjust"
+ }
+ }
- if { [expr $minaddr > 64512] } {
- warning "mmap_min_addr > 64512, fast tracepoint will fail"
- warning "do \"sudo sysctl -w vm.mmap_min_addr=32768\" to adjust"
- }
- }
+ gdb_test_multiple "ftrace four_byter" "set 4-byte fast tracepoint" {
+ -re "May not have a fast tracepoint at .*\r\n$gdb_prompt $" {
+ pass "4-byte fast tracepoint could not be set"
+ }
+ -re "Fast tracepoint .*\r\n$gdb_prompt $" {
+ pass "4-byte fast tracepoint is set"
+ set fourgood 1
+ }
+ }
- gdb_test_multiple "ftrace four_byter" "set 4-byte fast tracepoint" {
- -re "May not have a fast tracepoint at .*\r\n$gdb_prompt $" {
- pass "4-byte fast tracepoint could not be set"
- }
- -re "Fast tracepoint .*\r\n$gdb_prompt $" {
- pass "4-byte fast tracepoint is set"
- set fourgood 1
- }
- }
+ if { $fourgood } {
- if { $fourgood } {
+ gdb_trace_setactions "collect at four_byter: define actions" \
+ "" \
+ "collect globvar, anarg" "^$"
+ }
+ }
- gdb_trace_setactions "collect at four_byter: define actions" \
- "" \
- "collect globvar, anarg" "^$"
- }
- }
+ run_trace_experiment
- run_trace_experiment
+ gdb_test "tfind pc *set_point" "Found trace frame .*" \
+ "tfind set_point frame, first time"
- gdb_test "tfind pc *set_point" "Found trace frame .*" \
- "tfind set_point frame, first time"
+ gdb_test "print globvar" " = 1"
- gdb_test "print globvar" " = 1"
+ gdb_test "tfind pc *set_point" "Found trace frame .*" \
+ "tfind set_point frame, second time"
- gdb_test "tfind pc *set_point" "Found trace frame .*" \
- "tfind set_point frame, second time"
+ setup_kfail "gdb/13808" "x86_64-*-linux*"
+ gdb_test "print anarg" " = 200"
- gdb_test "print anarg" " = 200"
+ gdb_test "tfind start" "Found trace frame .*" \
+ "reset tfinding"
- gdb_test "tfind start" "Found trace frame .*" \
- "reset tfinding"
+ if { $fourgood } {
- if { $fourgood } {
+ gdb_test "tfind pc *four_byter" "Found trace frame .*" \
+ "tfind four_byter frame, first time"
- gdb_test "tfind pc *four_byter" "Found trace frame .*" \
- "tfind four_byter frame, first time"
+ gdb_test "print anarg" " = 101" \
+ "look at collected local, first time"
- gdb_test "print anarg" " = 101" \
- "look at collected local, first time"
+ gdb_test "tfind pc *four_byter" "Found trace frame .*" \
+ "tfind four_byter frame, second time"
- gdb_test "tfind pc *four_byter" "Found trace frame .*" \
- "tfind four_byter frame, second time"
+ gdb_test "print anarg" " = 201" \
+ "look at collected local, second time"
- gdb_test "print anarg" " = 201" \
- "look at collected local, second time"
+ }
- }
+ # If debugging with the remote target, try force disabling the
+ # fast tracepoints RSP feature, and confirm fast tracepoints
+ # can no longer be downloaded.
+ set test "fast tracepoint could not be downloaded with the feature disabled"
+ if [gdb_is_target_remote] {
+ gdb_test "set remote fast-tracepoints-packet off"
+
+ gdb_test_multiple "tstart" $test {
+ -re "warning: Target does not support fast tracepoints, downloading .* as regular tracepoint.*\r\n$gdb_prompt $" {
+ pass $test
+ }
+ }
+ } else {
+ unsupported $test
}
}
gdb_reinitialize_dir $srcdir/$subdir
-if { [gdb_test "info sharedlibrary" ".*libinproctrace\.so.*" "IPA loaded"] != 0 } {
- untested "Could not find IPA lib loaded"
+if { [gdb_test "info sharedlibrary" ".*${remote_libipa}.*" "IPA loaded"] != 0 } {
+ untested "could not find IPA lib loaded"
return 1
}
projects / binutils-gdb.git / blobdiff