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

   1 # Copyright 2004-2024 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 require {!target_info exists gdb,nosignals}
  25
  26 require supports_get_siginfo_type
  27
  28
  29 standard_testfile
  30
  31 if {[prepare_for_testing "failed to prepare" $testfile $srcfile debug]} {
  32     return -1
  33 }
  34
  35 # Advance to main
  36 if {![runto_main]} {
  37     return 0
  38 }
  39
  40 # Run to the signal.
  41 gdb_test "continue" ".*Program received signal SIGSEGV.*" \
  42          "continue to signal, 1st"
  43
  44 # Try to generate a core file, for a later test.
  45 set gcorefile [standard_output_file $testfile.gcore]
  46 set gcore_created [gdb_gcore_cmd $gcorefile "save a core file"]
  47
  48 set ssi_addr ""
  49 set test "extract si_addr"
  50 gdb_test_multiple "p \$_siginfo" "$test" {
  51     -re "si_addr = ($hex).*$gdb_prompt $" {
  52         set ssi_addr $expect_out(1,string)
  53         pass "$test"
  54     }
  55 }
  56
  57 set test "extract si_errno"
  58 gdb_test_multiple "p \$_siginfo" "$test" {
  59     -re "si_errno = (\[0-9\]\+).*$gdb_prompt $" {
  60         set ssi_errno $expect_out(1,string)
  61         pass "$test"
  62     }
  63 }
  64
  65 set test "extract si_code"
  66 gdb_test_multiple "p \$_siginfo" "$test" {
  67     -re "si_code = (\[0-9\]\+).*$gdb_prompt $" {
  68         set ssi_code $expect_out(1,string)
  69         pass "$test"
  70     }
  71 }
  72
  73 set test "extract si_signo"
  74 gdb_test_multiple "p \$_siginfo" "$test" {
  75     -re "si_signo = (\[0-9\]\+).*$gdb_prompt $" {
  76         set ssi_signo $expect_out(1,string)
  77         pass "$test"
  78     }
  79 }
  80
  81 set bp_location [gdb_get_line_number "set breakpoint here"]
  82
  83 with_test_prefix "validate siginfo fields" {
  84     gdb_test "break $bp_location"
  85     gdb_test "continue" ".* handler .*" "continue to handler"
  86     gdb_test "p ssi_addr" " = \\(void \\*\\) $ssi_addr"
  87     gdb_test "p ssi_errno" " = $ssi_errno"
  88     gdb_test "p ssi_code" " = $ssi_code"
  89     gdb_test "p ssi_signo" " = $ssi_signo"
  90 }
  91
  92 # Again, but this time, patch si_addr and check that the inferior sees
  93 # the changed value.
  94
  95 # Advance to main
  96 if {![runto_main]} {
  97     return 0
  98 }
  99
 100 # Run to the signal.
 101 gdb_test "continue" ".*Program received signal SIGSEGV.*" \
 102          "continue to signal, 2nd"
 103
 104 set test "set si_addr"
 105 gdb_test "p \$_siginfo._sifields._sigfault.si_addr = 0x666" " = \\(void \\*\\) 0x666"
 106 gdb_test "p \$_siginfo.si_errno = 666" " = 666"
 107 gdb_test "p \$_siginfo.si_code = 999" " = 999"
 108 gdb_test "p \$_siginfo.si_signo = 11" " = 11"
 109
 110 with_test_prefix "validate modified siginfo fields" {
 111     gdb_test "break $bp_location"
 112     gdb_test "continue" ".* handler .*" "continue to handler"
 113     gdb_test "p ssi_addr" " = \\(void \\*\\) 0x666"
 114     gdb_test "p ssi_errno" " = 666"
 115     gdb_test "p ssi_code" " = 999"
 116     gdb_test "p ssi_signo" " = 11"
 117 }
 118
 119 # Test siginfo preservation in core files.
 120 if {$gcore_created} {
 121     clean_restart $binfile
 122
 123     gdb_test "core $gcorefile" "Core was generated by.*" \
 124         "core [file tail $gcorefile]"
 125
 126     gdb_test "p \$_siginfo.si_signo" " = $ssi_signo" \
 127         "p \$_siginfo.si_signo from core file"
 128     gdb_test "p \$_siginfo.si_errno" " = $ssi_errno" \
 129         "p \$_siginfo.si_errno from core file"
 130     gdb_test "p \$_siginfo.si_code" " = $ssi_code" \
 131         "p \$_siginfo.si_code from core file"
 132     gdb_test "p \$_siginfo._sifields._sigfault.si_addr" \
 133         " = \\(void \\*\\) $ssi_addr" \
 134         "p \$_siginfo._sifields._sigfault.si_addr from core file"
 135 }