gdb/testsuite/gdb.base/find-unmapped.exp

   1 # Copyright 2012-2023 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 standard_testfile
  17
  18 if { [prepare_for_testing "failed to prepare" ${testfile}] } {
  19     return -1
  20 }
  21
  22 if ![runto breakpt] {
  23     return -1
  24 }
  25
  26 # Basic attempt to read memory from globals.
  27 gdb_test "x/5w global_var_1" \
  28     "$hex:\[ \t\]+0\[ \t\]+0\[ \t\]+0\[ \t\]+0\r\n$hex:\[ \t\]+Cannot access memory at address $hex"
  29 gdb_test "x/5w global_var_2" \
  30     "$hex:\[ \t\]+Cannot access memory at address $hex"
  31
  32
  33 # Try a find starting from each global, expecting the search to fail
  34 # due to memory access failure.
  35 #
  36 # If EXPECT_WARNING is true, then expect the "Unable to access
  37 # ... halting search" warning before the "Pattern not found" output.
  38 # Otherwise, don't expect the warning.
  39 #
  40 # (EXPECT_WARNING is necessary because when testing with the RSP
  41 # against servers that support the remote search memory packet, GDB
  42 # does not print that "halting search" warning.  While there are
  43 # servers that do print the same warning message as GDB would if it
  44 # were in charge of the search (like GDBserver), we're only parsing
  45 # GDB's output here, not the server's output.  And while we could read
  46 # GDBserver's output from $inferior_spawn_id, having GDBserver print
  47 # the warnings on its terminal doesn't really help users.  Much better
  48 # would be to extend the remote protocol to let the server tell GDB
  49 # which memory range couldn't be accessed, and then let GDB print the
  50 # warning instead of the server.  See PR gdb/22293.)
  51
  52 proc test_not_found {expect_warning} {
  53     global decimal hex
  54
  55     if {$expect_warning} {
  56         set halting_search_re \
  57             "warning: Unable to access $decimal bytes of target memory at $hex, halting search\.\r\n"
  58     } else {
  59         set halting_search_re ""
  60     }
  61
  62     # Now try a find starting from each global.
  63     gdb_test "find global_var_0, global_var_2, 0xff" \
  64         "${halting_search_re}Pattern not found."
  65
  66     gdb_test "find global_var_1, global_var_2, 0xff" \
  67         "${halting_search_re}Pattern not found."
  68
  69     gdb_test "find global_var_2, (global_var_2 + 16), 0xff" \
  70         "${halting_search_re}Pattern not found."
  71 }
  72
  73 # If testing with the RSP, also test with target-side search
  74 # acceleration disabled.  This serves as proxy for servers that don't
  75 # support the memory search packet, when testing with GDBserver.
  76
  77 if {[target_info gdb_protocol] == "remote"
  78     || [target_info gdb_protocol] == "extended-remote"} {
  79     test_not_found 0
  80     with_test_prefix "search-memory-packet off" {
  81         gdb_test_no_output "set remote search-memory-packet off"
  82         test_not_found 0
  83     }
  84 } else {
  85     test_not_found 1
  86 }