gdb/testsuite/gdb.base/siginfo-obj.exp

   1 # Copyright 2004-2017 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 # The program siginfo-obj.c arranges for a signal handler registered
  18 # using sigaction's sa_sigaction / SA_SIGINFO to be called with
  19 # si_addr filled in.
  20
  21 # This test confirms that we can inspect signal info using the
  22 # $_siginfo convenience variable.
  23
  24 if [target_info exists gdb,nosignals] {
  25     verbose "Skipping siginfo-obj.exp because of nosignals."
  26     continue
  27 }
  28
  29 if { ![supports_get_siginfo_type] } {
  30     verbose "Skipping siginfo-obj.exp because of lack of support."
  31     return
  32 }
  33
  34
  35 standard_testfile
  36
  37 if {[prepare_for_testing "failed to prepare" $testfile $srcfile debug]} {
  38     return -1
  39 }
  40
  41 # Advance to main
  42 if { ![runto_main] } then {
  43     gdb_suppress_tests
  44 }
  45
  46 # Run to the signal.
  47 gdb_test "continue" ".*Program received signal SIGSEGV.*" "continue to signal"
  48
  49 # Try to generate a core file, for a later test.
  50 set gcorefile [standard_output_file $testfile.gcore]
  51 set gcore_created [gdb_gcore_cmd $gcorefile "save a core file"]
  52
  53 set ssi_addr ""
  54 set test "extract si_addr"
  55 gdb_test_multiple "p \$_siginfo" "$test" {
  56     -re "si_addr = ($hex).*$gdb_prompt $" {
  57         set ssi_addr $expect_out(1,string)
  58         pass "$test"
  59     }
  60 }
  61
  62 set test "extract si_errno"
  63 gdb_test_multiple "p \$_siginfo" "$test" {
  64     -re "si_errno = (\[0-9\]\+).*$gdb_prompt $" {
  65         set ssi_errno $expect_out(1,string)
  66         pass "$test"
  67     }
  68 }
  69
  70 set test "extract si_code"
  71 gdb_test_multiple "p \$_siginfo" "$test" {
  72     -re "si_code = (\[0-9\]\+).*$gdb_prompt $" {
  73         set ssi_code $expect_out(1,string)
  74         pass "$test"
  75     }
  76 }
  77
  78 set test "extract si_signo"
  79 gdb_test_multiple "p \$_siginfo" "$test" {
  80     -re "si_signo = (\[0-9\]\+).*$gdb_prompt $" {
  81         set ssi_signo $expect_out(1,string)
  82         pass "$test"
  83     }
  84 }
  85
  86 set bp_location [gdb_get_line_number "set breakpoint here"]
  87
  88 gdb_test "break $bp_location"
  89 gdb_test "continue" ".* handler .*" "continue to handler"
  90
  91 gdb_test "p ssi_addr" " = \\(void \\*\\) $ssi_addr"
  92 gdb_test "p ssi_errno" " = $ssi_errno"
  93 gdb_test "p ssi_code" " = $ssi_code"
  94 gdb_test "p ssi_signo" " = $ssi_signo"
  95
  96 # Again, but this time, patch si_addr and check that the inferior sees
  97 # the changed value.
  98
  99 # Advance to main
 100 if { ![runto_main] } then {
 101     gdb_suppress_tests
 102 }
 103
 104 # Run to the signal.
 105 gdb_test "continue" ".*Program received signal SIGSEGV.*" "continue to signal"
 106
 107 set test "set si_addr"
 108 gdb_test "p \$_siginfo._sifields._sigfault.si_addr = 0x666" " = \\(void \\*\\) 0x666"
 109 gdb_test "p \$_siginfo.si_errno = 666" " = 666"
 110 gdb_test "p \$_siginfo.si_code = 999" " = 999"
 111 gdb_test "p \$_siginfo.si_signo = 11" " = 11"
 112
 113 gdb_test "break $bp_location"
 114 gdb_test "continue" ".* handler .*" "continue to handler"
 115
 116 gdb_test "p ssi_addr" " = \\(void \\*\\) 0x666"
 117 gdb_test "p ssi_errno" " = 666"
 118 gdb_test "p ssi_code" " = 999"
 119 gdb_test "p ssi_signo" " = 11"
 120
 121 # Test siginfo preservation in core files.
 122 if {$gcore_created} {
 123     clean_restart $binfile
 124
 125     gdb_test "core $gcorefile" "Core was generated by.*" \
 126         "core [file tail $gcorefile]"
 127
 128     gdb_test "p \$_siginfo.si_signo" " = $ssi_signo" \
 129         "p \$_siginfo.si_signo from core file"
 130     gdb_test "p \$_siginfo.si_errno" " = $ssi_errno" \
 131         "p \$_siginfo.si_errno from core file"
 132     gdb_test "p \$_siginfo.si_code" " = $ssi_code" \
 133         "p \$_siginfo.si_code from core file"
 134     gdb_test "p \$_siginfo._sifields._sigfault.si_addr" \
 135         " = \\(void \\*\\) $ssi_addr" \
 136         "p \$_siginfo._sifields._sigfault.si_addr from core file"
 137 }