gdb/testsuite/lib/trace-support.exp

   1 # Copyright (C) 1998, 2007-2012 Free Software Foundation, Inc.
   2
   3 # This program is free software; you can redistribute it and/or modify
   4 # it under the terms of the GNU General Public License as published by
   5 # the Free Software Foundation; either version 3 of the License, or
   6 # (at your option) any later version.
   7 #
   8 # This program is distributed in the hope that it will be useful,
   9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11 # GNU General Public License for more details.
  12 #
  13 # You should have received a copy of the GNU General Public License
  14 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  15
  16
  17 #
  18 # Support procedures for trace testing
  19 #
  20
  21
  22 #
  23 # Procedure: gdb_target_supports_trace
  24 # Returns true if GDB is connected to a target that supports tracing.
  25 # Allows tests to abort early if not running on a trace-aware target.
  26 #
  27
  28 proc gdb_target_supports_trace { } {
  29     global gdb_prompt
  30
  31     send_gdb "tstatus\n"
  32     gdb_expect {
  33         -re "\[Tt\]race can only be run on.*$gdb_prompt $" {
  34             return 0
  35         }
  36         -re "\[Tt\]race can not be run on.*$gdb_prompt $" {
  37             return 0
  38         }
  39         -re "\[Tt\]arget does not support.*$gdb_prompt $" {
  40             return 0
  41         }
  42         -re ".*\[Ee\]rror.*$gdb_prompt $" {
  43             return 0
  44         }
  45         -re ".*\[Ww\]arning.*$gdb_prompt $" {
  46             return 0
  47         }
  48         -re ".*$gdb_prompt $" {
  49             return 1
  50         }
  51         timeout {
  52             return 0
  53         }
  54     }
  55 }
  56
  57
  58 #
  59 # Procedure: gdb_delete_tracepoints
  60 # Many of the tests depend on setting tracepoints at various places and
  61 # running until that tracepoint is reached.  At times, we want to start
  62 # with a clean slate with respect to tracepoints, so this utility proc
  63 # lets us do this without duplicating this code everywhere.
  64 #
  65
  66 proc gdb_delete_tracepoints {} {
  67     global gdb_prompt
  68
  69     send_gdb "delete tracepoints\n"
  70     gdb_expect 30 {
  71         -re "Delete all tracepoints.*y or n.*$" {
  72             send_gdb "y\n";
  73             exp_continue
  74         }
  75         -re ".*$gdb_prompt $" { # This happens if there were no tracepoints }
  76         timeout {
  77             perror "Delete all tracepoints in delete_tracepoints (timeout)"
  78             return
  79         }
  80     }
  81     send_gdb "info tracepoints\n"
  82     gdb_expect 30 {
  83          -re "No tracepoints.*$gdb_prompt $" {}
  84          -re "$gdb_prompt $" { perror "tracepoints not deleted" ; return }
  85          timeout { perror "info tracepoints (timeout)" ; return }
  86     }
  87 }
  88
  89 #
  90 # Procedure: gdb_trace_setactions
  91 #   Define actions for a tracepoint.
  92 #   Arguments:
  93 #       testname   -- identifying string for pass/fail output
  94 #       tracepoint -- to which tracepoint do these actions apply? (optional)
  95 #       args       -- list of actions to be defined.
  96 #   Returns:
  97 #       zero       -- success
  98 #       non-zero   -- failure
  99
 100 proc gdb_trace_setactions { testname tracepoint args } {
 101     global gdb_prompt;
 102
 103     set state 0;
 104     set passfail "pass";
 105     send_gdb "actions $tracepoint\n";
 106     set expected_result "";
 107     gdb_expect 5 {
 108         -re "No tracepoint number .*$gdb_prompt $" {
 109             fail $testname
 110             return 1;
 111         }
 112         -re "Enter actions for tracepoint $tracepoint.*>" {
 113             if { [llength $args] > 0 } {
 114                 set lastcommand "[lindex $args $state]";
 115                 send_gdb "[lindex $args $state]\n";
 116                 incr state;
 117                 set expected_result [lindex $args $state];
 118                 incr state;
 119             } else {
 120                 send_gdb "end\n";
 121             }
 122             exp_continue;
 123         }
 124         -re "\(.*\)\[\r\n\]+\[ \t]*>$" {
 125             if { $expected_result != "" } {
 126                 regsub "^\[^\r\n\]+\[\r\n\]+" "$expect_out(1,string)" "" out;
 127                 if ![regexp $expected_result $out] {
 128                     set passfail "fail";
 129                 }
 130                 set expected_result "";
 131             }
 132             if { $state < [llength $args] } {
 133                 send_gdb "[lindex $args $state]\n";
 134                 incr state;
 135                 set expected_result [lindex $args $state];
 136                 incr state;
 137             } else {
 138                 send_gdb "end\n";
 139                 set expected_result "";
 140             }
 141             exp_continue;
 142         }
 143         -re "\(.*\)$gdb_prompt $" {
 144             if { $expected_result != "" } {
 145                 if ![regexp $expected_result $expect_out(1,string)] {
 146                     set passfail "fail";
 147                 }
 148                 set expected_result "";
 149             }
 150             if { [llength $args] < $state } {
 151                 set passfail "fail";
 152             }
 153         }
 154         default {
 155             set passfail "fail";
 156         }
 157     }
 158     if { $testname != "" } {
 159         $passfail $testname;
 160     }
 161     if { $passfail == "pass" } then {
 162         return 0;
 163     } else {
 164         return 1;
 165     }
 166 }
 167
 168 #
 169 # Procedure: gdb_tfind_test
 170 #   Find a specified trace frame.
 171 #   Arguments:
 172 #       testname   -- identifying string for pass/fail output
 173 #       tfind_arg  -- frame (line, PC, etc.) identifier
 174 #       exp_res    -- Expected result of frame test
 175 #       args       -- Test expression
 176 #   Returns:
 177 #       zero       -- success
 178 #       non-zero   -- failure
 179 #
 180
 181 proc gdb_tfind_test { testname tfind_arg exp_res args } {
 182     global gdb_prompt;
 183
 184     if { "$args" != "" } {
 185         set expr "$exp_res";
 186         set exp_res "$args";
 187     } else {
 188         set expr "(int) \$trace_frame";
 189     }
 190     set passfail "fail";
 191
 192     gdb_test "tfind $tfind_arg" "" ""
 193     send_gdb "printf \"x \%d x\\n\", $expr\n";
 194     gdb_expect 10 {
 195         -re "x (-*\[0-9\]+) x" {
 196             if { $expect_out(1,string) == $exp_res } {
 197                 set passfail "pass";
 198             }
 199             exp_continue;
 200         }
 201         -re "$gdb_prompt $" { }
 202     }
 203     $passfail "$testname";
 204     if { $passfail == "pass" } then {
 205         return 0;
 206     } else {
 207         return 1;
 208     }
 209 }
 210
 211 #
 212 # Procedure: gdb_readexpr
 213 #   Arguments:
 214 #       gdb_expr    -- the expression whose value is desired
 215 #   Returns:
 216 #       the value of gdb_expr, as evaluated by gdb.
 217 #       [FIXME: returns -1 on error, which is sometimes a legit value]
 218 #
 219
 220 proc gdb_readexpr { gdb_expr } {
 221     global gdb_prompt;
 222
 223     set result -1;
 224     send_gdb "print $gdb_expr\n"
 225     gdb_expect 5 {
 226         -re "\[$\].*= (\[0-9\]+).*$gdb_prompt $" {
 227             set result $expect_out(1,string);
 228         }
 229         -re "$gdb_prompt $" { }
 230         default { }
 231     }
 232     return $result;
 233 }
 234
 235 #
 236 # Procedure: gdb_gettpnum
 237 #   Arguments:
 238 #       tracepoint (optional): if supplied, set a tracepoint here.
 239 #   Returns:
 240 #       the tracepoint ID of the most recently set tracepoint.
 241 #
 242
 243 proc gdb_gettpnum { tracepoint } {
 244     global gdb_prompt;
 245
 246     if { $tracepoint != "" } {
 247         gdb_test "trace $tracepoint" "" ""
 248     }
 249     return [gdb_readexpr "\$tpnum"];
 250 }
 251
 252
 253 #
 254 # Procedure: gdb_find_function_baseline
 255 #   Arguments:
 256 #       func_name -- name of source function
 257 #   Returns:
 258 #       Sourcefile line of function definition (open curly brace),
 259 #       or -1 on failure.  Caller must check return value.
 260 #   Note:
 261 #       Works only for open curly brace at beginning of source line!
 262 #
 263
 264 proc gdb_find_function_baseline { func_name } {
 265     global gdb_prompt;
 266
 267     set baseline -1;
 268
 269     send_gdb "list $func_name\n"
 270 #    gdb_expect {
 271 #       -re "\[\r\n\]\[\{\].*$gdb_prompt $" {
 272 #           set baseline 1
 273 #        }
 274 #    }
 275 }
 276
 277 #
 278 # Procedure: gdb_find_function_baseline
 279 #   Arguments:
 280 #       filename: name of source file of desired function.
 281 #   Returns:
 282 #       Sourcefile line of function definition (open curly brace),
 283 #       or -1 on failure.  Caller must check return value.
 284 #   Note:
 285 #       Works only for open curly brace at beginning of source line!
 286 #
 287
 288 proc gdb_find_recursion_test_baseline { filename } {
 289     global gdb_prompt;
 290
 291     set baseline -1;
 292
 293     gdb_test "list $filename:1" "" ""
 294     send_gdb "search gdb_recursion_test line 0\n"
 295     gdb_expect {
 296         -re "(\[0-9\]+)\[\t \]+\{.*line 0.*$gdb_prompt $" {
 297             set baseline $expect_out(1,string);
 298         }
 299         -re "$gdb_prompt $" { }
 300         default { }
 301     }
 302     return $baseline;
 303 }