1# Copyright 2011-2014 Free Software Foundation, Inc. 2# This program is free software; you can redistribute it and/or modify 3# it under the terms of the GNU General Public License as published by 4# the Free Software Foundation; either version 3 of the License, or 5# (at your option) any later version. 6# 7# This program is distributed in the hope that it will be useful, 8# but WITHOUT ANY WARRANTY; without even the implied warranty of 9# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 10# GNU General Public License for more details. 11# 12# You should have received a copy of the GNU General Public License 13# along with this program. If not, see <http://www.gnu.org/licenses/>. 14 15load_lib "trace-support.exp" 16 17standard_testfile 18set executable $testfile 19set expfile $testfile.exp 20 21# Some targets have leading underscores on assembly symbols. 22set additional_flags [gdb_target_symbol_prefix_flags] 23 24if [prepare_for_testing $expfile $executable $srcfile \ 25 [list debug $additional_flags]] { 26 untested "failed to prepare for trace tests" 27 return -1 28} 29 30if ![runto_main] { 31 fail "Can't run to main to check for trace support" 32 return -1 33} 34 35if ![gdb_target_supports_trace] { 36 unsupported "target does not support trace" 37 return -1 38} 39 40set libipa [get_in_proc_agent] 41gdb_load_shlibs $libipa 42 43# Can't use prepare_for_testing, because that splits compiling into 44# building objects and then linking, and we'd fail with "linker input 45# file unused because linking not done" when building the object. 46 47if { [gdb_compile "$srcdir/$subdir/$srcfile" $binfile \ 48 executable [list debug $additional_flags shlib=$libipa] ] != "" } { 49 untested "failed to compile ftrace tests" 50 return -1 51} 52clean_restart ${executable} 53 54if ![runto_main] { 55 fail "Can't run to main for ftrace tests" 56 return 0 57} 58 59proc run_trace_experiment {} { 60 61 gdb_test "continue" \ 62 ".*Breakpoint \[0-9\]+, begin .*" \ 63 "advance to trace begin" 64 65 gdb_test_no_output "tstart" "start trace experiment" 66 67 gdb_test "continue" \ 68 ".*Breakpoint \[0-9\]+, end .*" \ 69 "advance through tracing" 70 71 gdb_test "tstatus" ".*Trace .*" "check on trace status" 72 73 gdb_test "tstop" "" "" 74} 75 76proc test_fast_tracepoints {} { 77 global gdb_prompt 78 79 set fourgood 0 80 81 gdb_test "break begin" ".*" "" 82 83 gdb_test "break end" ".*" "" 84 85 gdb_test "print gdb_agent_gdb_trampoline_buffer_error" ".*" "" 86 87 if { [istarget "x86_64-*-*"] || [istarget "i\[34567\]86-*-*"] } { 88 89 gdb_test "ftrace set_point" "Fast tracepoint .*" \ 90 "fast tracepoint at a long insn" 91 92 gdb_trace_setactions "collect at set_point: define actions" \ 93 "" \ 94 "collect globvar, anarg" "^$" 95 96 # Make a test of shorter fast tracepoints, 32-bit x86 only 97 98 if { [istarget "i?86-*-*"] } { 99 100 # A Linux target needs to be able to allocate trampolines in the 101 # 16-bit range, check mmap_min_addr so we can warn testers. 102 if { [istarget "i?86-*-linux*"] } { 103 104 set minaddr [exec sh -c "cat /proc/sys/vm/mmap_min_addr"] 105 106 if { [expr $minaddr > 64512] } { 107 warning "mmap_min_addr > 64512, fast tracepoint will fail" 108 warning "do \"sudo sysctl -w vm.mmap_min_addr=32768\" to adjust" 109 } 110 } 111 112 gdb_test_multiple "ftrace four_byter" "set 4-byte fast tracepoint" { 113 -re "May not have a fast tracepoint at .*\r\n$gdb_prompt $" { 114 pass "4-byte fast tracepoint could not be set" 115 } 116 -re "Fast tracepoint .*\r\n$gdb_prompt $" { 117 pass "4-byte fast tracepoint is set" 118 set fourgood 1 119 } 120 } 121 122 if { $fourgood } { 123 124 gdb_trace_setactions "collect at four_byter: define actions" \ 125 "" \ 126 "collect globvar, anarg" "^$" 127 } 128 } 129 130 run_trace_experiment 131 132 gdb_test "tfind pc *set_point" "Found trace frame .*" \ 133 "tfind set_point frame, first time" 134 135 setup_kfail "gdb/13808" "x86_64-*-linux*" 136 gdb_test "print globvar" " = 1" 137 138 gdb_test "tfind pc *set_point" "Found trace frame .*" \ 139 "tfind set_point frame, second time" 140 141 setup_kfail "gdb/13808" "x86_64-*-linux*" 142 gdb_test "print anarg" " = 200" 143 144 gdb_test "tfind start" "Found trace frame .*" \ 145 "reset tfinding" 146 147 if { $fourgood } { 148 149 gdb_test "tfind pc *four_byter" "Found trace frame .*" \ 150 "tfind four_byter frame, first time" 151 152 gdb_test "print anarg" " = 101" \ 153 "look at collected local, first time" 154 155 gdb_test "tfind pc *four_byter" "Found trace frame .*" \ 156 "tfind four_byter frame, second time" 157 158 gdb_test "print anarg" " = 201" \ 159 "look at collected local, second time" 160 161 } 162 } 163} 164 165gdb_reinitialize_dir $srcdir/$subdir 166 167if { [gdb_test "info sharedlibrary" ".*${libipa}.*" "IPA loaded"] != 0 } { 168 untested "Could not find IPA lib loaded" 169 return 1 170} 171 172test_fast_tracepoints 173