Home | History | Annotate | Line # | Download | only in gdb.threads 
      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 (at) 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 }
    154