gdb/testsuite/gdb.base/display.exp

   1 #   Copyright 1997-2021 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 # display.exp   Test display commands
  17 #               Also do some printing stuff for coverage's sake.
  18 #
  19 standard_testfile
  20
  21 if {[prepare_for_testing "failed to prepare" $testfile $srcfile \
  22          {debug nowarnings}]} {
  23     return -1
  24 }
  25
  26 # Preserve the old timeout, and set a new one that should be
  27 # sufficient to avoid timing out during this test.
  28 set oldtimeout $timeout
  29 set timeout [expr "$timeout + 60"]
  30 verbose "Timeout is now $timeout seconds" 2
  31
  32 # use this to debug:
  33 #log_user 1
  34
  35 # Some coverage stuff
  36 #
  37 if !$use_gdb_stub {
  38     gdb_test "kill" ".*The program is not being run.*"
  39     gdb_test "detach" ".*"
  40     gdb_test "run" ".*"
  41
  42     gdb_load ${binfile}
  43     gdb_test "kill" ".*" "kill again"
  44     gdb_test "detach" ".*" "detach again"
  45
  46     gdb_exit
  47     gdb_start
  48     gdb_reinitialize_dir $srcdir/$subdir
  49     gdb_load ${binfile}
  50 }
  51
  52 # Ok, on to real life
  53 #
  54 if ![runto_main] then {
  55     fail "could not run to main - other tests will fail."
  56     continue
  57 }
  58
  59 # Disable hardware watchpoints if necessary.
  60 if [target_info exists gdb,no_hardware_watchpoints] {
  61     gdb_test_no_output "set can-use-hw-watchpoints 0" ""
  62 }
  63
  64 set bp_location1 [gdb_get_line_number "set breakpoint 1 here"]
  65 gdb_test "break $bp_location1" ".*Breakpoint 2.*"           "break  do_loops"
  66 gdb_test "cont"     ".*Breakpoint 2, do_loops.*" "get to do_loops"
  67
  68 # Create stopping points.
  69 #
  70 gdb_test "watch sum"    ".*\[Ww\]atchpoint 3: sum.*" "set watch"
  71 set bp_location2 [gdb_get_line_number "set breakpoint 2 here"]
  72 gdb_test "break $bp_location2"     ".*Breakpoint 4.*" "break loop end"
  73
  74 # Create displays for those points
  75 #
  76 gdb_test "info disp" ".*There are no auto-display expressions now..*" "inf disp"
  77 gdb_test "disp i" ".*1: i = 0.*" "display i"
  78 gdb_test "disp/x j" ".*2: /x j = 0x0.*" "display j"
  79 gdb_test "disp/i &k" ".*3: x/i &k(\r\n|  )   $hex:.*" "display &k"
  80 gdb_test "disp/f f" ".*4: /f f = 3.1415*" "display/f f"
  81 gdb_test "disp/s &sum" ".*5: x/s &sum  $hex.*sum.:.*" "display/s &sum"
  82
  83 # Hit the displays
  84 #
  85 gdb_test "cont" [multi_line \
  86                      ".*\[Ww\]atchpoint 3: sum.*" \
  87                      "\[1-9\]*: i = 0.*" \
  88                      "\[1-9\]*: /x j = 0x0" \
  89                      "\[1-9\]*: x/i &k.*" \
  90                      "\[1-9\]*: /f f = 3.1415" \
  91                      "\[1-9\]*: x/s &sum.*" \
  92                     ] "first disp"
  93
  94 gdb_test "cont" [multi_line \
  95                      ".*\[Ww\]atchpoint 3: sum.*" \
  96                      "\[1-9\]*: i = 0.*" \
  97                      "\[1-9\]*: /x j = 0x0.*" \
  98                      "\[1-9\]*: x/i &k.*" \
  99                      "\[1-9\]*: /f f = 4.1415" \
 100                      "\[1-9\]*: x/s &sum.*" \
 101                     ] "second disp"
 102
 103 gdb_test "enab  disp 6" ".*No display number 6..*" "catch err"
 104 gdb_test_no_output "disab disp 1" "disab disp 1"
 105 gdb_test_no_output "disab disp 2" "disab disp 2"
 106 gdb_test_no_output "enab disp 1"  "re-enab"
 107 gdb_test_no_output "enab disp 1"  "re-enab of enab"
 108 gdb_test_no_output "undisp 5"     "undisp"
 109 gdb_test "info disp" [multi_line \
 110                           "Auto-display expressions now in effect.*" \
 111                           ".*y  i" \
 112                           ".*n  /x j" \
 113                           ".*y  /1bi &k" \
 114                           ".*y  /f f" \
 115                          ]
 116
 117 gdb_test "cont" [multi_line \
 118                      ".*\[Ww\]atch.*" \
 119                      ".*i = 0" \
 120                      ".*5.1415" \
 121                     ] "next hit"
 122
 123 gdb_test "undisp" \
 124     "" \
 125     "undisp all" \
 126     ".*Delete all auto-display expressions.*y or n. $" \
 127     "y"
 128
 129
 130 # Test displaying a variable that is temporarily at a bad address.
 131 # But if we can examine what's at memory address 0, then we'll also be
 132 # able to display it without error.  Don't run the test in that case.
 133 set can_read_0 [is_address_zero_readable]
 134
 135 if { !$can_read_0 } {
 136     gdb_test "disp *p_i" ".*: \\*p_i = 0"
 137     gdb_test "p p_i = 0x0" " = \\(int \\*\\) 0x0"
 138     gdb_test "display" ".*: \\*p_i = <error: .*>" "display bad address"
 139     gdb_test "p p_i = &i" " = \\(int \\*\\) $hex"
 140     gdb_test "display" ".*: \\*p_i = 0" "display good address"
 141
 142     gdb_test "undisp" \
 143         "" \
 144         "undisp all again" \
 145         ".*Delete all auto-display expressions.*y or n. $" \
 146         "y"
 147 }
 148
 149 gdb_test "disab 3" ".*.*"
 150 gdb_test "cont" ".*Breakpoint 4.*" "watch off"
 151
 152 # Now the printf tests
 153 #
 154 # The "finish" command may leave us mid-line in the caller on some
 155 # targets, including but not limited to the m68k, i386 & PA.  So we
 156 # have to arrange to step until we hit the line with the call to
 157 # "do_vars".
 158 gdb_test_multiple "finish" "finish" {
 159     -re ".*do_loops\\(\\);.*$gdb_prompt $" {
 160         send_gdb "step\n"
 161         exp_continue
 162     }
 163     -re ".*do_vars.*$gdb_prompt $" {
 164         pass "finish"
 165     }
 166 }
 167
 168 gdb_test "step"      ".*do_vars.*.*i = 9.*"
 169 set bp_location3 [gdb_get_line_number "set breakpoint 3 here"]
 170 gdb_test "tbreak $bp_location3" ".*breakpoint 5 a.*" "tbreak in do_vars"
 171 gdb_test "cont"      ".*do_vars.*$bp_location3.*$bp_location3.*"
 172
 173 # Beat on printf a bit
 174 #
 175 gdb_test "printf" ".*Argument required.*"
 176 gdb_test "printf %d" ".*Bad format string, missing.*"
 177 gdb_test "printf \"%d" ".*Bad format string, non-terminated.*"
 178 gdb_test "printf \"%d%d\",i" ".*Wrong number of arguments.*"
 179 gdb_test "printf \"\\\\!\\a\\f\\r\\t\\v\\b\\n\"" ".*!.*"
 180 gdb_test_no_output "printf \"\"" "re-set term"
 181 gdb_test "printf \"\\w\"" ".*Unrecognized escape character.*"
 182 gdb_test "printf \"%d\" j" ".*Invalid argument syntax.*"
 183 gdb_test "printf \"%p\\n\", 0" "\\(nil\\)"
 184 gdb_test "printf \"%p\\n\", 1" "0x1"
 185
 186 # play with "print", too
 187 #
 188 gdb_test "print/k j" ".*Undefined output format.*"
 189 gdb_test "print/d j" " = 0\[\\r\\n\]+"   "debug test output 1"
 190 gdb_test "print/r j" " = 0\[\\r\\n\]+"   "debug test output 1a"
 191 gdb_test "print/x j" " = 0x0\[\\r\\n\]+" "debug test output 2"
 192 gdb_test "print/r j" " = 0x0\[\\r\\n\]+" "debug test output 2a"
 193 gdb_test "print j"   " = 0\[\\r\\n\]+"   "debug test output 3"
 194
 195 # x/0 j doesn't produce any output and terminates PA64 process when testing
 196 gdb_test_no_output "x/0 j"
 197
 198 # For when the test is built in C++ mode.
 199 gdb_test_no_output "set print asm-demangle on"
 200
 201 gdb_test "print/0 j" ".*Item count other than 1 is meaningless.*"
 202 gdb_test "print/s sum" " = 1000" "ignored s"
 203 gdb_test "print/i sum" ".*Format letter.*is meaningless.*.*" "no i"
 204 gdb_test "print/a &sum" ".*= $hex.*<sum>.*"
 205 # If the constant below is larger than the length of main, then
 206 # this test will (incorrectly) fail.  So use a small number.
 207 gdb_test "print/a main+4" ".*= $hex.*<.*>.*"
 208 gdb_test "print/a \$pc" ".*= $hex.*<do_vars+.*>.*"
 209 gdb_test "print/a &&j" ".*A .* error in expression.*"
 210
 211 # Done!
 212 #
 213 gdb_exit
 214
 215 # Restore the preserved old timeout value.
 216 set timeout $oldtimeout
 217 verbose "Timeout is now $timeout seconds" 2
 218
 219 return 0