Hi malware fighters,
Here is a nice test suite for weak symbols in ELF targets, everyone knows the consequences of weak cgi (old targeting method but still dangerously exploitable).
set testname “weak symbols”
-# This test only works for ELF targets. It ought to work for some
-# a.out targets, but it doesn’t.
-if ![is_elf_format] {
+# This test only works for ELF targets.
+# It ought to work for some a.out targets, but it doesn’t.
+if {! [is_elf_format] && ! [is_pecoff_format]} {
- unsupported $testname
return
}
+# Weak symbols are broken for non-i386 PE targets.
+if {! [istarget i?86--]} {
- setup_xfail --pe*
+}
if {! [ld_assemble $as $srcdir/$subdir/weak1.s tmpdir/weak1.o]
|| ! [ld_assemble $as $srcdir/$subdir/weak2.s tmpdir/weak2.o]} then {
+# is_pecoff_format
+# true if the object format is known to be PECOFF
+#
+proc is_pecoff_format {} {
- if { ![istarget --mingw32*] \
- && ![istarget --cygwin*] \
- && ![istarget --pe*] } {
- return 0
- }
- return 1
+}
+#
simple_diff
compares two files line-by-line
returns differences if exist
@@ -29,15 +29,23 @@
&& ![istarget --linux*]
&& ![istarget --irix5*]
&& ![istarget --irix6*] \
-
&& ![is_pecoff_format] \ && ![istarget *-*-solaris2*] } then { - unsupported $testname
return
}
if { [istarget --linuxaout]
|| [istarget --linuxoldld] } {
- unsupported $testname
return
}
+# Weak symbols are broken for non-i386 PE targets.
+if {! [istarget i?86--]} {
- setup_xfail --pe*
+}
if {! [ld_assemble $as $srcdir/$subdir/weak-undef.s tmpdir/weak-undef.o]} then {
# It’s OK if .weak doesn’t work on this target.
unresolved $testname
Impliment, and enjoy,
polonus