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

   1 # Copyright 2002-2013 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 gdb_test_multiple "help gcore" "help gcore" {
  59     -re "Undefined command: .gcore.*$gdb_prompt $" {
  60         # gcore command not supported -- nothing to test here.
  61         unsupported "gdb does not support gcore on this target"
  62         return -1;
  63     }
  64     -re "Save a core file .*$gdb_prompt $" {
  65         pass "help gcore"
  66     }
  67 }
  68
  69 if { ! [ runto_main ] } then {
  70     untested gcore-thread.exp
  71     return -1
  72 }
  73
  74 gdb_test_multiple "info threads" "threads are supported" {
  75     -re ".* main .*$gdb_prompt $" {
  76         # OK, threads are supported.
  77     }
  78     -re "${nl}$gdb_prompt $" {
  79         unsupported "gdb does not support threads on this target"
  80         return -1;
  81     }
  82 }
  83
  84 # Make sure thread 1 is running
  85 delete_breakpoints
  86 gdb_breakpoint "thread1"
  87 gdb_test "continue" "Continuing.*Breakpoint.* thread1 .*" "thread 1 is running"
  88
  89 # Make sure thread 2 is running
  90 delete_breakpoints
  91 gdb_breakpoint "thread2"
  92 gdb_test "continue" "Continuing.*Breakpoint.* thread2 .*" "thread 2 is running"
  93
  94 # Drop corefile
  95 set core_supported [gdb_gcore_cmd "$corefile" "save a corefile"]
  96
  97 if {!$core_supported} {
  98   return -1
  99 }
 100
 101
 102 # Test the uninitialized thread list.
 103 # Provide the case of glibc td_thr_get_info handling of:
 104 # /* Special case for the main thread before initialization.  */
 105
 106 foreach symbol {__stack_user stack_used} {
 107     set test "clear ${symbol}.next"
 108     gdb_test_multiple "p *(void **) &${symbol} = 0" $test {
 109         -re " = \\(void \\*\\) 0x0\r\n$gdb_prompt $" {
 110             pass $test
 111         }
 112         -re "No symbol \"${symbol}\" in current context\\.\r\n$gdb_prompt $" {
 113             xfail $test
 114             # Do not do the verification.
 115             set core0file ""
 116         }
 117     }
 118 }
 119
 120 if {"$core0file" != ""} {
 121     gdb_test "gcore $core0file" "Saved corefile .*" "save a zeroed-threads corefile"
 122 }
 123
 124
 125 # Now restart gdb and load the corefile.
 126 clean_restart ${testfile}
 127
 128 proc load_core { corefile } {
 129     global gdb_prompt
 130     global libthread_db_seen
 131
 132     gdb_test_multiple "core $corefile" \
 133         "re-load generated corefile" {
 134             -re "\\\[Thread debugging using \[^ \r\n\]* enabled\\\]\r\n" {
 135                 exp_continue
 136             }
 137             -re " is not a core dump:.*\r\n$gdb_prompt $" {
 138                 fail "re-load generated corefile (bad file format)"
 139                 # No use proceeding from here.
 140                 return 0;
 141             }
 142             -re ": No such file or directory.*\r\n$gdb_prompt $" {
 143                 fail "re-load generated corefile (file not found)"
 144                 # No use proceeding from here.
 145                 return 0;
 146             }
 147             -re "Couldn't find .* registers in core file.*\r\n$gdb_prompt $" {
 148                 fail "re-load generated corefile (incomplete note section)"
 149             }
 150             -re "Core was generated by .*\r\n$gdb_prompt $" {
 151                 pass "re-load generated corefile"
 152             }
 153         }
 154     return 1
 155 }
 156
 157 foreach name { corefile core0file } { with_test_prefix $name {
 158     if ![load_core [subst $$name]] {
 159         continue
 160     }
 161
 162     # FIXME: now what can we test about the thread state?
 163     # We do not know for certain that there should be at least
 164     # three threads, because who knows what kind of many-to-one
 165     # mapping various OS's may do?  Let's assume that there must
 166     # be at least two threads:
 167
 168     gdb_test "info threads" ".*${nl}  2 ${horiz}${nl}\\* 1 .*" \
 169             "corefile contains at least two threads"
 170
 171     # One thread in the corefile should be in the "thread2" function.
 172
 173     gdb_test "info threads" ".* thread2 .*" \
 174             "a corefile thread is executing thread2"
 175
 176     # The thread2 thread should be marked as the current thread.
 177
 178     gdb_test "info threads" ".*${nl}\\* ${horiz} thread2 .*" \
 179             "thread2 is current thread in corefile"
 180 }}