gdb/testsuite/gdb.threads/gcore-thread.exp

   1 # Copyright 2002-2021 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 # This file was written by Michael Snyder (msnyder@redhat.com)
  17 # This is a test for the gdb command "generate-core-file".
  18
  19 # Single-threaded test case
  20 standard_testfile pthreads.c
  21 set objfile  $binfile.o
  22 set corefile $binfile.test
  23 set core0file ${binfile}0.test
  24
  25 if [istarget "*-*-linux"] then {
  26     set target_cflags "-D_MIT_POSIX_THREADS"
  27 } else {
  28     set target_cflags ""
  29 }
  30
  31 # Attempt to prevent -Wl,-z,relro which happens by default at least on
  32 # Kubuntu-10.10.  Due to PR corefiles/11804 will then GDB be unable to find
  33 # libpthread, therefore libthread_db will not fail as expected
  34 # on the test `zeroed-threads cannot be listed'.
  35
  36 set opts [list debug]
  37 if {[gdb_compile_pthreads "${srcdir}/${subdir}/${srcfile}" "${objfile}" object $opts] != ""
  38     || ([gdb_compile_pthreads "${objfile}" "${binfile}" executable [concat $opts {additional_flags=-Wl,-z,norelro}] ] != ""
  39         && [gdb_compile_pthreads "${objfile}" "${binfile}" executable $opts] != "") } {
  40     return -1
  41 }
  42
  43 # Now we can proceed with the real testing.
  44
  45 # Start with a fresh gdb.
  46
  47 clean_restart ${testfile}
  48
  49 # regexp for "horizontal" text (i.e. doesn't include newline or
  50 # carriage return)
  51 set horiz "\[^\n\r\]*"
  52
  53 # regexp for newline
  54 set nl "\[\r\n\]+"
  55
  56 set timeout 30
  57
  58 if { ! [ runto_main ] } then {
  59     untested "could not run to main"
  60     return -1
  61 }
  62
  63 gdb_test_multiple "info threads" "threads are supported" {
  64     -re ".* main .*$gdb_prompt $" {
  65         # OK, threads are supported.
  66     }
  67     -re "${nl}$gdb_prompt $" {
  68         unsupported "gdb does not support threads on this target"
  69         return -1
  70     }
  71 }
  72
  73 # Make sure thread 1 is running
  74 delete_breakpoints
  75 gdb_breakpoint "thread1"
  76 gdb_test "continue" "Continuing.*Breakpoint.* thread1 .*" "thread 1 is running"
  77
  78 # Make sure thread 2 is running
  79 delete_breakpoints
  80 gdb_breakpoint "thread2"
  81 gdb_test "continue" "Continuing.*Breakpoint.* thread2 .*" "thread 2 is running"
  82
  83 # Drop corefile
  84 set core_supported [gdb_gcore_cmd "$corefile" "save a corefile"]
  85
  86 if {!$core_supported} {
  87   return -1
  88 }
  89
  90
  91 # Test the uninitialized thread list.
  92 # Provide the case of glibc td_thr_get_info handling of:
  93 # /* Special case for the main thread before initialization.  */
  94
  95 foreach symbol {__stack_user stack_used} {
  96     set test "clear ${symbol}.next"
  97     gdb_test_multiple "p *(void **) &${symbol} = 0" $test {
  98         -re " = \\(void \\*\\) 0x0\r\n$gdb_prompt $" {
  99             pass $test
 100         }
 101         -re "No symbol \"${symbol}\" in current context\\.\r\n$gdb_prompt $" {
 102             xfail $test
 103             # Do not do the verification.
 104             set core0file ""
 105         }
 106     }
 107 }
 108
 109 if {"$core0file" != ""} {
 110     gdb_test "gcore $core0file" "Saved corefile .*" "save a zeroed-threads corefile"
 111 }
 112
 113
 114 # Now restart gdb and load the corefile.
 115 clean_restart ${testfile}
 116
 117 proc load_core { filename } {
 118     global horiz nl
 119
 120     set core_loaded [gdb_core_cmd $filename "re-load generated corefile"]
 121     if { $core_loaded == -1 } {
 122         # No use proceeding from here.
 123         return
 124     }
 125
 126     # FIXME: now what can we test about the thread state?
 127     # We do not know for certain that there should be at least
 128     # three threads, because who knows what kind of many-to-one
 129     # mapping various OS's may do?  Let's assume that there must
 130     # be at least two threads:
 131
 132     gdb_test "info threads" "\\* 1 ${horiz}${nl}  2 ${horiz}.*" \
 133             "corefile contains at least two threads"
 134
 135     # One thread in the corefile should be in the "thread2" function.
 136
 137     gdb_test "info threads" ".* thread2 .*" \
 138             "a corefile thread is executing thread2"
 139
 140     # The thread2 thread should be marked as the current thread.
 141
 142     gdb_test "info threads" "\\* ${horiz} thread2 .*${nl}" \
 143             "thread2 is current thread in corefile"
 144 }
 145
 146 foreach name { corefile core0file } {
 147     set filename [subst $$name]
 148     if { $filename == "" } {
 149         continue
 150     }
 151     with_test_prefix $name {
 152         load_core $filename
 153     }
 154 }