+# Copyright 2011 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/>.
+
+load_lib "trace-support.exp";
+
+set testfile "ftrace"
+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 \
+ [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"
+ return -1
+}
+
+if ![gdb_target_supports_trace] {
+ unsupported "target does not support trace"
+ return -1
+}
+
+set libipa $objdir/../gdbserver/libinproctrace.so
+gdb_load_shlibs $libipa
+
+# Can't use prepare_for_testing, because that splits compiling into
+# building objects and then linking, and we'd fail with "linker input
+# file unused because linking not done" when building the object.
+
+if { [gdb_compile "$srcdir/$subdir/$srcfile" $binfile \
+ executable [list debug $additional_flags shlib=$libipa] ] != "" } {
+ untested "failed to compile ftrace tests"
+ return -1
+}
+clean_restart ${executable}
+
+if ![runto_main] {
+ fail "Can't run to main for ftrace tests"
+ return 0
+}
+
+proc run_trace_experiment {} {
+
+ gdb_test "continue" \
+ ".*Breakpoint \[0-9\]+, begin .*" \
+ "advance to trace begin"
+
+ gdb_test_no_output "tstart" "start trace experiment"
+
+ gdb_test "continue" \
+ ".*Breakpoint \[0-9\]+, end .*" \
+ "advance through tracing"
+
+ gdb_test "tstatus" ".*Trace .*" "check on trace status"
+
+ gdb_test "tstop" "" ""
+}
+
+proc test_fast_tracepoints {} {
+
+ set fourgood 0
+
+ gdb_test "break begin" ".*" ""
+
+ gdb_test "break end" ".*" ""
+
+ 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_trace_setactions "collect at set_point: define actions" \
+ "" \
+ "collect globvar, anarg" "^$"
+
+ # Make a test of shorter fast tracepoints, 32-bit x86 only
+
+ 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*"] } {
+
+ 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"
+ }
+ }
+
+ gdb_test_multiple "ftrace four_byter" "set 4-byte fast tracepoint" {
+ -re "May not have a fast tracepoint at .*" {
+ pass "4-byte fast tracepoint could not be set"
+ }
+ -re "Fast tracepoint .*" {
+ pass "4-byte fast tracepoint is set"
+ set fourgood 1
+ }
+ }
+
+ if { $fourgood } {
+
+ gdb_trace_setactions "collect at four_byter: define actions" \
+ "" \
+ "collect globvar, anarg" "^$"
+ }
+ }
+
+ run_trace_experiment
+
+ gdb_test "tfind pc *set_point" "Found trace frame .*" \
+ "tfind set_point frame, first time"
+
+ gdb_test "print globvar" " = 1"
+
+ gdb_test "tfind pc *set_point" "Found trace frame .*" \
+ "tfind set_point frame, second time"
+
+ gdb_test "print anarg" " = 200"
+
+ gdb_test "tfind start" "Found trace frame .*" \
+ "reset tfinding"
+
+ if { $fourgood } {
+
+ 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 "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_reinitialize_dir $srcdir/$subdir
+
+if { [gdb_test "info sharedlibrary" ".*libinproctrace\.so.*" "IPA loaded"] != 0 } {
+ untested "Could not find IPA lib loaded"
+ return 1
+}
+
+test_fast_tracepoints
projects / external / binutils.git / commitdiff