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

   1 # Copyright 2004-2019 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     fail "can't run to main"
  44     return 0
  45 }
  46
  47 # Run to the signal.
  48 gdb_test "continue" ".*Program received signal SIGSEGV.*" "continue to signal"
  49
  50 # Try to generate a core file, for a later test.
  51 set gcorefile [standard_output_file $testfile.gcore]
  52 set gcore_created [gdb_gcore_cmd $gcorefile "save a core file"]
  53
  54 set ssi_addr ""
  55 set test "extract si_addr"
  56 gdb_test_multiple "p \$_siginfo" "$test" {
  57     -re "si_addr = ($hex).*$gdb_prompt $" {
  58         set ssi_addr $expect_out(1,string)
  59         pass "$test"
  60     }
  61 }
  62
  63 set test "extract si_errno"
  64 gdb_test_multiple "p \$_siginfo" "$test" {
  65     -re "si_errno = (\[0-9\]\+).*$gdb_prompt $" {
  66         set ssi_errno $expect_out(1,string)
  67         pass "$test"
  68     }
  69 }
  70
  71 set test "extract si_code"
  72 gdb_test_multiple "p \$_siginfo" "$test" {
  73     -re "si_code = (\[0-9\]\+).*$gdb_prompt $" {
  74         set ssi_code $expect_out(1,string)
  75         pass "$test"
  76     }
  77 }
  78
  79 set test "extract si_signo"
  80 gdb_test_multiple "p \$_siginfo" "$test" {
  81     -re "si_signo = (\[0-9\]\+).*$gdb_prompt $" {
  82         set ssi_signo $expect_out(1,string)
  83         pass "$test"
  84     }
  85 }
  86
  87 set bp_location [gdb_get_line_number "set breakpoint here"]
  88
  89 gdb_test "break $bp_location"
  90 gdb_test "continue" ".* handler .*" "continue to handler"
  91
  92 gdb_test "p ssi_addr" " = \\(void \\*\\) $ssi_addr"
  93 gdb_test "p ssi_errno" " = $ssi_errno"
  94 gdb_test "p ssi_code" " = $ssi_code"
  95 gdb_test "p ssi_signo" " = $ssi_signo"
  96
  97 # Again, but this time, patch si_addr and check that the inferior sees
  98 # the changed value.
  99
 100 # Advance to main
 101 if ![runto_main] then {
 102     fail "can't run to main"
 103     return 0
 104 }
 105
 106 # Run to the signal.
 107 gdb_test "continue" ".*Program received signal SIGSEGV.*" "continue to signal"
 108
 109 set test "set si_addr"
 110 gdb_test "p \$_siginfo._sifields._sigfault.si_addr = 0x666" " = \\(void \\*\\) 0x666"
 111 gdb_test "p \$_siginfo.si_errno = 666" " = 666"
 112 gdb_test "p \$_siginfo.si_code = 999" " = 999"
 113 gdb_test "p \$_siginfo.si_signo = 11" " = 11"
 114
 115 gdb_test "break $bp_location"
 116 gdb_test "continue" ".* handler .*" "continue to handler"
 117
 118 gdb_test "p ssi_addr" " = \\(void \\*\\) 0x666"
 119 gdb_test "p ssi_errno" " = 666"
 120 gdb_test "p ssi_code" " = 999"
 121 gdb_test "p ssi_signo" " = 11"
 122
 123 # Test siginfo preservation in core files.
 124 if {$gcore_created} {
 125     clean_restart $binfile
 126
 127     gdb_test "core $gcorefile" "Core was generated by.*" \
 128         "core [file tail $gcorefile]"
 129
 130     gdb_test "p \$_siginfo.si_signo" " = $ssi_signo" \
 131         "p \$_siginfo.si_signo from core file"
 132     gdb_test "p \$_siginfo.si_errno" " = $ssi_errno" \
 133         "p \$_siginfo.si_errno from core file"
 134     gdb_test "p \$_siginfo.si_code" " = $ssi_code" \
 135         "p \$_siginfo.si_code from core file"
 136     gdb_test "p \$_siginfo._sifields._sigfault.si_addr" \
 137         " = \\(void \\*\\) $ssi_addr" \
 138         "p \$_siginfo._sifields._sigfault.si_addr from core file"
 139 }