gdb/testsuite/gdb.trace/ftrace.exp

   1 # Copyright 2011-2012 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
  15 load_lib "trace-support.exp";
  16
  17 set testfile "ftrace"
  18 set executable $testfile
  19 set srcfile $testfile.c
  20 set binfile $objdir/$subdir/$testfile
  21 set expfile $testfile.exp
  22
  23 # Some targets have leading underscores on assembly symbols.
  24 set additional_flags [gdb_target_symbol_prefix_flags]
  25
  26 if [prepare_for_testing $expfile $executable $srcfile \
  27         [list debug $additional_flags]] {
  28     untested "failed to prepare for trace tests"
  29     return -1
  30 }
  31
  32 if ![runto_main] {
  33     fail "Can't run to main to check for trace support"
  34     return -1
  35 }
  36
  37 if ![gdb_target_supports_trace] {
  38     unsupported "target does not support trace"
  39     return -1
  40 }
  41
  42 set libipa [get_in_proc_agent]
  43 gdb_load_shlibs $libipa
  44
  45 # Can't use prepare_for_testing, because that splits compiling into
  46 # building objects and then linking, and we'd fail with "linker input
  47 # file unused because linking not done" when building the object.
  48
  49 if { [gdb_compile "$srcdir/$subdir/$srcfile" $binfile \
  50           executable [list debug $additional_flags shlib=$libipa] ] != "" } {
  51     untested "failed to compile ftrace tests"
  52     return -1
  53 }
  54 clean_restart ${executable}
  55
  56 if ![runto_main] {
  57     fail "Can't run to main for ftrace tests"
  58     return 0
  59 }
  60
  61 proc run_trace_experiment {} {
  62
  63     gdb_test "continue" \
  64         ".*Breakpoint \[0-9\]+, begin .*" \
  65         "advance to trace begin"
  66
  67     gdb_test_no_output "tstart" "start trace experiment"
  68
  69     gdb_test "continue" \
  70         ".*Breakpoint \[0-9\]+, end .*" \
  71         "advance through tracing"
  72
  73     gdb_test "tstatus" ".*Trace .*" "check on trace status"
  74
  75     gdb_test "tstop" "" ""
  76 }
  77
  78 proc test_fast_tracepoints {} {
  79     global gdb_prompt
  80
  81     set fourgood 0
  82
  83     gdb_test "break begin" ".*" ""
  84
  85     gdb_test "break end" ".*" ""
  86
  87     gdb_test "print gdb_agent_gdb_trampoline_buffer_error" ".*" ""
  88
  89     if { [istarget "x86_64-*-*"] || [istarget "i\[34567\]86-*-*"] } {
  90
  91         gdb_test "ftrace set_point" "Fast tracepoint .*" \
  92             "fast tracepoint at a long insn"
  93
  94         gdb_trace_setactions "collect at set_point: define actions" \
  95             "" \
  96             "collect globvar, anarg" "^$"
  97
  98         # Make a test of shorter fast tracepoints, 32-bit x86 only
  99
 100         if { [istarget "i?86-*-*"] } {
 101
 102             # A Linux target needs to be able to allocate trampolines in the
 103             # 16-bit range, check mmap_min_addr so we can warn testers.
 104             if { [istarget "i?86-*-linux*"] } {
 105
 106                 set minaddr [exec sh -c "cat /proc/sys/vm/mmap_min_addr"]
 107
 108                 if { [expr $minaddr > 64512] } {
 109                     warning "mmap_min_addr > 64512, fast tracepoint will fail"
 110                     warning "do \"sudo sysctl -w vm.mmap_min_addr=32768\" to adjust"
 111                 }
 112             }
 113
 114             gdb_test_multiple "ftrace four_byter" "set 4-byte fast tracepoint" {
 115                 -re "May not have a fast tracepoint at .*\r\n$gdb_prompt $" {
 116                     pass "4-byte fast tracepoint could not be set"
 117                 }
 118                 -re "Fast tracepoint .*\r\n$gdb_prompt $" {
 119                     pass "4-byte fast tracepoint is set"
 120                     set fourgood 1
 121                 }
 122             }
 123
 124             if { $fourgood } {
 125
 126                 gdb_trace_setactions "collect at four_byter: define actions" \
 127                 "" \
 128                 "collect globvar, anarg" "^$"
 129             }
 130         }
 131
 132         run_trace_experiment
 133
 134         gdb_test "tfind pc *set_point" "Found trace frame .*" \
 135             "tfind set_point frame, first time"
 136
 137         setup_kfail_for_target "gdb/13808" "x86_64-*-linux*"
 138         gdb_test "print globvar" " = 1"
 139
 140         gdb_test "tfind pc *set_point" "Found trace frame .*" \
 141             "tfind set_point frame, second time"
 142
 143         setup_kfail_for_target "gdb/13808" "x86_64-*-linux*"
 144         gdb_test "print anarg" " = 200"
 145
 146         gdb_test "tfind start" "Found trace frame .*" \
 147             "reset tfinding"
 148
 149         if { $fourgood } {
 150
 151             gdb_test "tfind pc *four_byter" "Found trace frame .*" \
 152                 "tfind four_byter frame, first time"
 153
 154             gdb_test "print anarg" " = 101" \
 155                 "look at collected local, first time"
 156
 157             gdb_test "tfind pc *four_byter" "Found trace frame .*" \
 158                 "tfind four_byter frame, second time"
 159
 160             gdb_test "print anarg" " = 201" \
 161                 "look at collected local, second time"
 162
 163         }
 164     }
 165 }
 166
 167 gdb_reinitialize_dir $srcdir/$subdir
 168
 169 if { [gdb_test "info sharedlibrary" ".*${libipa}.*" "IPA loaded"] != 0 } {
 170     untested "Could not find IPA lib loaded"
 171     return 1
 172 }
 173
 174 test_fast_tracepoints