| 1 | # This testcase is part of GDB, the GNU debugger. |
| 2 | # |
| 3 | # Copyright 2013-2015 Free Software Foundation, Inc. |
| 4 | # |
| 5 | # Contributed by Intel Corp. <christian.himpel@intel.com> |
| 6 | # |
| 7 | # This program is free software; you can redistribute it and/or modify |
| 8 | # it under the terms of the GNU General Public License as published by |
| 9 | # the Free Software Foundation; either version 3 of the License, or |
| 10 | # (at your option) any later version. |
| 11 | # |
| 12 | # This program is distributed in the hope that it will be useful, |
| 13 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | # GNU General Public License for more details. |
| 16 | # |
| 17 | # You should have received a copy of the GNU General Public License |
| 18 | # along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 19 | |
| 20 | # check for btrace support |
| 21 | if { [skip_btrace_tests] } { return -1 } |
| 22 | |
| 23 | # compile and run to main |
| 24 | standard_testfile .c .S |
| 25 | if [prepare_for_testing $testfile.exp $testfile "$srcfile $srcfile2" {debug}] { |
| 26 | return -1 |
| 27 | } |
| 28 | if ![runto_main] { |
| 29 | return -1 |
| 30 | } |
| 31 | |
| 32 | # set bp before loop and continue |
| 33 | set bp_location [gdb_get_line_number "bp.1" $srcfile2] |
| 34 | gdb_breakpoint $srcfile2:$bp_location |
| 35 | gdb_continue_to_breakpoint "cont to $bp_location" ".*$srcfile2:$bp_location.*" |
| 36 | |
| 37 | # start btrace |
| 38 | gdb_test_no_output "record btrace" |
| 39 | |
| 40 | # set bp after loop and continue |
| 41 | set bp_location [gdb_get_line_number "bp.2" $srcfile2] |
| 42 | gdb_breakpoint $srcfile2:$bp_location |
| 43 | gdb_continue_to_breakpoint "cont to $bp_location" ".*$srcfile2:$bp_location.*" |
| 44 | |
| 45 | # The following test cases test if "browsing" through the |
| 46 | # instruction history works as expected. So for the tests |
| 47 | # it is necessary to count the number of lines that are |
| 48 | # shown by the "record instruction-history" command. |
| 49 | |
| 50 | set traced {} |
| 51 | set testname "determine number of recorded instructions" |
| 52 | gdb_test_multiple "info record" $testname { |
| 53 | -re "Active record target: record-btrace\r\n.*\r\nRecorded \(\[0-9\]*\) instructions in \(\[0-9\]*\) functions \\\(0 gaps\\\) for thread 1 .*\\.\r\n$gdb_prompt $" { |
| 54 | set traced $expect_out(1,string) |
| 55 | pass $testname |
| 56 | } |
| 57 | } |
| 58 | |
| 59 | # we have exactly 11 instructions here |
| 60 | set message "exactly 11 instructions" |
| 61 | if { $traced != 11 } { |
| 62 | fail $message |
| 63 | } else { |
| 64 | pass $message |
| 65 | } |
| 66 | |
| 67 | # test that we see the expected instructions |
| 68 | gdb_test "record instruction-history 3,7" [join [list \ |
| 69 | "3\t 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>:\tje 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>" \ |
| 70 | "4\t 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>:\tdec %eax" \ |
| 71 | "5\t 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>:\tjmp 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>" \ |
| 72 | "6\t 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>:\tcmp \\\$0x0,%eax" \ |
| 73 | "7\t 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>:\tje 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>\r" \ |
| 74 | ] "\r\n"] |
| 75 | |
| 76 | gdb_test "record instruction-history /f 3,+5" [join [list \ |
| 77 | "3\t 0x\[0-9a-f\]+ <\\+\[0-9\]+>:\tje 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>" \ |
| 78 | "4\t 0x\[0-9a-f\]+ <\\+\[0-9\]+>:\tdec %eax" \ |
| 79 | "5\t 0x\[0-9a-f\]+ <\\+\[0-9\]+>:\tjmp 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>" \ |
| 80 | "6\t 0x\[0-9a-f\]+ <\\+\[0-9\]+>:\tcmp \\\$0x0,%eax" \ |
| 81 | "7\t 0x\[0-9a-f\]+ <\\+\[0-9\]+>:\tje 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>\r" \ |
| 82 | ] "\r\n"] |
| 83 | |
| 84 | gdb_test "record instruction-history /p 7,-5" [join [list \ |
| 85 | "3\t0x\[0-9a-f\]+ <loop\\+\[0-9\]+>:\tje 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>" \ |
| 86 | "4\t0x\[0-9a-f\]+ <loop\\+\[0-9\]+>:\tdec %eax" \ |
| 87 | "5\t0x\[0-9a-f\]+ <loop\\+\[0-9\]+>:\tjmp 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>" \ |
| 88 | "6\t0x\[0-9a-f\]+ <loop\\+\[0-9\]+>:\tcmp \\\$0x0,%eax" \ |
| 89 | "7\t0x\[0-9a-f\]+ <loop\\+\[0-9\]+>:\tje 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>\r" \ |
| 90 | ] "\r\n"] |
| 91 | |
| 92 | gdb_test "record instruction-history /pf 3,7" [join [list \ |
| 93 | "3\t0x\[0-9a-f\]+ <\\+\[0-9\]+>:\tje 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>" \ |
| 94 | "4\t0x\[0-9a-f\]+ <\\+\[0-9\]+>:\tdec %eax" \ |
| 95 | "5\t0x\[0-9a-f\]+ <\\+\[0-9\]+>:\tjmp 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>" \ |
| 96 | "6\t0x\[0-9a-f\]+ <\\+\[0-9\]+>:\tcmp \\\$0x0,%eax" \ |
| 97 | "7\t0x\[0-9a-f\]+ <\\+\[0-9\]+>:\tje 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>\r" \ |
| 98 | ] "\r\n"] |
| 99 | |
| 100 | gdb_test "record instruction-history 3,3" "3\t 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>:\tje 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>\r" |
| 101 | |
| 102 | # the following tests are checking the iterators |
| 103 | # to avoid lots of regexps, we just check the number of lines that |
| 104 | # were printed during command execution. |
| 105 | |
| 106 | # test_lines_output returns the output lines from command as a list. |
| 107 | proc test_lines_output { command message } { |
| 108 | global gdb_prompt |
| 109 | set message "test_lines_output: $message" |
| 110 | gdb_test_multiple $command $message { |
| 111 | -re "\n\(.*\)\r\n$gdb_prompt $" { |
| 112 | return [split [string trim $expect_out(1,string)] "\n"] |
| 113 | } |
| 114 | } |
| 115 | } |
| 116 | |
| 117 | # test_lines_length returns the number of lines from command. |
| 118 | proc test_lines_length { command message } { |
| 119 | return [llength [test_lines_output $command $message]] |
| 120 | } |
| 121 | |
| 122 | # show instruction history with unlimited size, we expect to see |
| 123 | # all $traced instructions |
| 124 | gdb_test_no_output "set record instruction-history-size 0" |
| 125 | set message "record instruction-history - unlimited" |
| 126 | set lines [test_lines_length "record instruction-history 1" $message] |
| 127 | if { $traced != $lines } { |
| 128 | fail $message |
| 129 | } else { |
| 130 | pass $message |
| 131 | } |
| 132 | |
| 133 | gdb_test_no_output "set record instruction-history-size $traced" |
| 134 | set message "record instruction-history - traced" |
| 135 | set lines [test_lines_length "record instruction-history 1" $message] |
| 136 | if { $traced != $lines } { |
| 137 | fail $message |
| 138 | } else { |
| 139 | pass $message |
| 140 | } |
| 141 | |
| 142 | # test that the iterator works |
| 143 | set history_size 4 |
| 144 | gdb_test_no_output "set record instruction-history-size $history_size" |
| 145 | set message "browse history forward start" |
| 146 | set lines [test_lines_length "record instruction-history 1" $message] |
| 147 | if { $lines != $history_size } { |
| 148 | fail $message |
| 149 | } else { |
| 150 | pass $message |
| 151 | } |
| 152 | |
| 153 | set message "browse history forward middle" |
| 154 | set lines [test_lines_length "record instruction-history +" $message] |
| 155 | if { $lines != $history_size } { |
| 156 | fail $message |
| 157 | } else { |
| 158 | pass $message |
| 159 | } |
| 160 | |
| 161 | set message "browse history forward last" |
| 162 | set lines [test_lines_length "record instruction-history +" $message] |
| 163 | if { $lines != 3 } { |
| 164 | fail $message |
| 165 | } else { |
| 166 | pass $message |
| 167 | } |
| 168 | |
| 169 | gdb_test "record instruction-history" "At the end of the branch trace record\\." "browse history forward beyond 1" |
| 170 | |
| 171 | # make sure we cannot move further |
| 172 | gdb_test "record instruction-history" "At the end of the branch trace record\\." "browse history forward beyond 2" |
| 173 | |
| 174 | set message "browse history backward last" |
| 175 | set lines [test_lines_length "record instruction-history -" $message] |
| 176 | if { $lines != $history_size } { |
| 177 | fail $message |
| 178 | } else { |
| 179 | pass $message |
| 180 | } |
| 181 | |
| 182 | set message "browse history backward middle" |
| 183 | set lines [test_lines_length "record instruction-history -" $message] |
| 184 | if { $lines != $history_size } { |
| 185 | fail $message |
| 186 | } else { |
| 187 | pass $message |
| 188 | } |
| 189 | |
| 190 | set message "browse history backward first" |
| 191 | set lines [test_lines_length "record instruction-history -" $message] |
| 192 | if { $lines != 3 } { |
| 193 | fail $message |
| 194 | } else { |
| 195 | pass $message |
| 196 | } |
| 197 | |
| 198 | gdb_test "record instruction-history -" "At the start of the branch trace record\\." "browse history backward beyond 1" |
| 199 | |
| 200 | # make sure we cannot move further back |
| 201 | gdb_test "record instruction-history -" "At the start of the branch trace record\\." "browse history backward beyond 2" |