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

   1 # Copyright 2002-2024 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 # 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 ${binfile}0.test
  24
  25 if {[istarget "*-*-linux"]} {
  26     set target_cflags "-D_MIT_POSIX_THREADS"
  27 } else {
  28     set target_cflags ""
  29 }
  30
  31 # Attempt to prevent -Wl,-z,relro which happens by default at least on
  32 # Kubuntu-10.10.  Due to PR corefiles/11804 will then GDB be unable to find
  33 # libpthread, therefore libthread_db will not fail as expected
  34 # on the test `zeroed-threads cannot be listed'.
  35
  36 set opts [list debug]
  37 if {[gdb_compile_pthreads "${srcdir}/${subdir}/${srcfile}" "${objfile}" object $opts] != ""
  38     || ([gdb_compile_pthreads "${objfile}" "${binfile}" executable [concat $opts {ldflags=-Wl,-z,norelro}] ] != ""
  39         && [gdb_compile_pthreads "${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]} {
  59     return -1
  60 }
  61
  62 gdb_test_multiple "info threads" "threads are supported" {
  63     -re ".* main .*$gdb_prompt $" {
  64         # OK, threads are supported.
  65     }
  66     -re "${nl}$gdb_prompt $" {
  67         unsupported "gdb does not support threads on this target"
  68         return -1
  69     }
  70 }
  71
  72 # Make sure thread 1 is running
  73 delete_breakpoints
  74 gdb_breakpoint "thread1"
  75 gdb_test "continue" "Continuing.*Breakpoint.* thread1 .*" "thread 1 is running"
  76
  77 # Make sure thread 2 is running
  78 delete_breakpoints
  79 gdb_breakpoint "thread2"
  80 gdb_test "continue" "Continuing.*Breakpoint.* thread2 .*" "thread 2 is running"
  81
  82 # Drop corefile
  83 set core_supported [gdb_gcore_cmd "$corefile" "save a corefile"]
  84
  85 if {!$core_supported} {
  86   return -1
  87 }
  88
  89
  90 # Test the uninitialized thread list.
  91 # Provide the case of glibc td_thr_get_info handling of:
  92 # /* Special case for the main thread before initialization.  */
  93
  94 foreach symbol {__stack_user stack_used} {
  95     set test "clear ${symbol}.next"
  96     gdb_test_multiple "p *(void **) &${symbol} = 0" $test {
  97         -re " = \\(void \\*\\) 0x0\r\n$gdb_prompt $" {
  98             pass $test
  99         }
 100         -re "No symbol \"${symbol}\" in current context\\.\r\n$gdb_prompt $" {
 101             xfail $test
 102             # Do not do the verification.
 103             set core0file ""
 104         }
 105     }
 106 }
 107
 108 if {"$core0file" != ""} {
 109     gdb_gcore_cmd $core0file "save a zeroed-threads corefile"
 110 }
 111
 112
 113 # Now restart gdb and load the corefile.
 114 clean_restart ${testfile}
 115
 116 proc load_core { filename } {
 117     global horiz nl
 118
 119     set core_loaded [gdb_core_cmd $filename "re-load generated corefile"]
 120     if { $core_loaded == -1 } {
 121         # No use proceeding from here.
 122         return
 123     }
 124
 125     # FIXME: now what can we test about the thread state?
 126     # We do not know for certain that there should be at least
 127     # three threads, because who knows what kind of many-to-one
 128     # mapping various OS's may do?  Let's assume that there must
 129     # be at least two threads:
 130
 131     gdb_test "info threads" "\\* 1 ${horiz}${nl}  2 ${horiz}.*" \
 132             "corefile contains at least two threads"
 133
 134     # One thread in the corefile should be in the "thread2" function.
 135
 136     gdb_test "info threads" ".* thread2 .*" \
 137             "a corefile thread is executing thread2"
 138
 139     # The thread2 thread should be marked as the current thread.
 140
 141     gdb_test "info threads" "\\* ${horiz} thread2 .*" \
 142             "thread2 is current thread in corefile"
 143 }
 144
 145 foreach name { corefile core0file } {
 146     set filename [subst $$name]
 147     if { $filename == "" } {
 148         continue
 149     }
 150     with_test_prefix $name {
 151         load_core $filename
 152     }
 153 }