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# Copyright 2002-2023 Free Software Foundation, Inc.
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
# This file was written by Michael Snyder (msnyder@redhat.com)
# This is a test for the gdb command "generate-core-file".
# Single-threaded test case
standard_testfile pthreads.c
set objfile $binfile.o
set corefile $binfile.test
set core0file ${binfile}0.test
if {[istarget "*-*-linux"]} {
set target_cflags "-D_MIT_POSIX_THREADS"
} else {
set target_cflags ""
}
# Attempt to prevent -Wl,-z,relro which happens by default at least on
# Kubuntu-10.10. Due to PR corefiles/11804 will then GDB be unable to find
# libpthread, therefore libthread_db will not fail as expected
# on the test `zeroed-threads cannot be listed'.
set opts [list debug]
if {[gdb_compile_pthreads "${srcdir}/${subdir}/${srcfile}" "${objfile}" object $opts] != ""
|| ([gdb_compile_pthreads "${objfile}" "${binfile}" executable [concat $opts {ldflags=-Wl,-z,norelro}] ] != ""
&& [gdb_compile_pthreads "${objfile}" "${binfile}" executable $opts] != "") } {
return -1
}
# Now we can proceed with the real testing.
# Start with a fresh gdb.
clean_restart ${testfile}
# regexp for "horizontal" text (i.e. doesn't include newline or
# carriage return)
set horiz "\[^\n\r\]*"
# regexp for newline
set nl "\[\r\n\]+"
set timeout 30
if {![runto_main]} {
return -1
}
gdb_test_multiple "info threads" "threads are supported" {
-re ".* main .*$gdb_prompt $" {
# OK, threads are supported.
}
-re "${nl}$gdb_prompt $" {
unsupported "gdb does not support threads on this target"
return -1
}
}
# Make sure thread 1 is running
delete_breakpoints
gdb_breakpoint "thread1"
gdb_test "continue" "Continuing.*Breakpoint.* thread1 .*" "thread 1 is running"
# Make sure thread 2 is running
delete_breakpoints
gdb_breakpoint "thread2"
gdb_test "continue" "Continuing.*Breakpoint.* thread2 .*" "thread 2 is running"
# Drop corefile
set core_supported [gdb_gcore_cmd "$corefile" "save a corefile"]
if {!$core_supported} {
return -1
}
# Test the uninitialized thread list.
# Provide the case of glibc td_thr_get_info handling of:
# /* Special case for the main thread before initialization. */
foreach symbol {__stack_user stack_used} {
set test "clear ${symbol}.next"
gdb_test_multiple "p *(void **) &${symbol} = 0" $test {
-re " = \\(void \\*\\) 0x0\r\n$gdb_prompt $" {
pass $test
}
-re "No symbol \"${symbol}\" in current context\\.\r\n$gdb_prompt $" {
xfail $test
# Do not do the verification.
set core0file ""
}
}
}
if {"$core0file" != ""} {
gdb_gcore_cmd $core0file "save a zeroed-threads corefile"
}
# Now restart gdb and load the corefile.
clean_restart ${testfile}
proc load_core { filename } {
global horiz nl
set core_loaded [gdb_core_cmd $filename "re-load generated corefile"]
if { $core_loaded == -1 } {
# No use proceeding from here.
return
}
# FIXME: now what can we test about the thread state?
# We do not know for certain that there should be at least
# three threads, because who knows what kind of many-to-one
# mapping various OS's may do? Let's assume that there must
# be at least two threads:
gdb_test "info threads" "\\* 1 ${horiz}${nl} 2 ${horiz}.*" \
"corefile contains at least two threads"
# One thread in the corefile should be in the "thread2" function.
gdb_test "info threads" ".* thread2 .*" \
"a corefile thread is executing thread2"
# The thread2 thread should be marked as the current thread.
gdb_test "info threads" "\\* ${horiz} thread2 .*${nl}" \
"thread2 is current thread in corefile"
}
foreach name { corefile core0file } {
set filename [subst $$name]
if { $filename == "" } {
continue
}
with_test_prefix $name {
load_core $filename
}
}
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