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

   1 # Copyright 2004-2022 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 # Multi-threaded siginfo test.
  18
  19 if [target_info exists gdb,nosignals] {
  20     verbose "Skipping siginfo-thread.exp because of nosignals."
  21     continue
  22 }
  23
  24 if { ![supports_get_siginfo_type] } {
  25     verbose "Skipping siginfo-thread.exp because of lack of support."
  26     return
  27 }
  28
  29 standard_testfile .c
  30
  31 if  {[gdb_compile_pthreads "${srcdir}/${subdir}/${srcfile}" \
  32           "${binfile}" executable {debug}] != "" } {
  33     return -1
  34 }
  35
  36 clean_restart $binfile
  37
  38 # Advance to main
  39 if ![runto_main] then {
  40     fail "can't run to main"
  41     return 0
  42 }
  43
  44 # Run to the signal.
  45 gdb_test "continue" "Thread .* received signal SIGSEGV.*" "continue to signal"
  46
  47 # Try to generate a core file, for a later test.
  48 set gcorefile [standard_output_file $testfile.gcore]
  49 set gcore_created [gdb_gcore_cmd $gcorefile "save a core file"]
  50
  51 set ssi_addr ""
  52 set test "extract si_addr"
  53 gdb_test_multiple "p \$_siginfo" "$test" {
  54     -re "si_addr = ($hex).*$gdb_prompt $" {
  55         set ssi_addr $expect_out(1,string)
  56         pass "$test"
  57     }
  58 }
  59
  60 set test "extract si_errno"
  61 gdb_test_multiple "p \$_siginfo" "$test" {
  62     -re "si_errno = (\[0-9\]\+).*$gdb_prompt $" {
  63         set ssi_errno $expect_out(1,string)
  64         pass "$test"
  65     }
  66 }
  67
  68 set test "extract si_code"
  69 gdb_test_multiple "p \$_siginfo" "$test" {
  70     -re "si_code = (\[0-9\]\+).*$gdb_prompt $" {
  71         set ssi_code $expect_out(1,string)
  72         pass "$test"
  73     }
  74 }
  75
  76 set test "extract si_signo"
  77 gdb_test_multiple "p \$_siginfo" "$test" {
  78     -re "si_signo = (\[0-9\]\+).*$gdb_prompt $" {
  79         set ssi_signo $expect_out(1,string)
  80         pass "$test"
  81     }
  82 }
  83
  84 set bp_location [gdb_get_line_number "set breakpoint here"]
  85
  86 gdb_test "break $bp_location"
  87 gdb_test "continue" ".* handler .*" "continue to handler"
  88
  89 gdb_test "p ssi_addr" " = \\(void \\*\\) $ssi_addr"
  90 gdb_test "p ssi_errno" " = $ssi_errno"
  91 gdb_test "p ssi_code" " = $ssi_code"
  92 gdb_test "p ssi_signo" " = $ssi_signo"
  93
  94 gdb_test "thread 1" ".*"
  95 # siginfo is available here -- it shows SIGSTOP -- so we test to make
  96 # sure that we have a different signal from the SEGV thread.
  97 gdb_test "p \$_siginfo.si_signo == $ssi_signo" " = 0" \
  98     "test signal in main thread"
  99
 100 # Test siginfo preservation in core files.
 101 if {$gcore_created} {
 102     clean_restart $binfile
 103
 104     gdb_test "core $gcorefile" "Core was generated by.*" \
 105         "core [file tail $gcorefile]"
 106
 107     gdb_test "p \$_siginfo.si_signo" " = $ssi_signo" \
 108         "p \$_siginfo.si_signo from core file"
 109     gdb_test "p \$_siginfo.si_errno" " = $ssi_errno" \
 110         "p \$_siginfo.si_errno from core file"
 111     gdb_test "p \$_siginfo.si_code" " = $ssi_code" \
 112         "p \$_siginfo.si_code from core file"
 113     gdb_test "p \$_siginfo._sifields._sigfault.si_addr" \
 114         " = \\(void \\*\\) $ssi_addr" \
 115         "p \$_siginfo._sifields._sigfault.si_addr from core file"
 116
 117     # We don't know which thread will be signalled, so we simply
 118     # ensure that only one thread got a SEGV.
 119     gdb_test_no_output "set variable \$count = 0"
 120     foreach thread {1 2} {
 121         gdb_test "thread $thread" ".*" "select thread $thread with core file"
 122         gdb_test_no_output \
 123             "set variable \$count += (\$_siginfo.si_signo == $ssi_signo)" \
 124             "update counter in thread $thread"
 125     }
 126     gdb_test "print \$count" " = 1"
 127 }