+2005-08-15 Maciej W. Rozycki <macro@linux-mips.org>
+
+ * configure.ac: Test for the name of the symbol used for the entry
+ point; define ENTRY_POINT to the result.
+ * configure: Regenerate.
+ * config.h.in: Regenerate.
+ * mf-heuristics.c: Replace _start with ENTRY_POINT throughout.
+
2005-08-14 Ulrich Weigand <weigand@informatik.uni-erlangen.de>
* mf-runtime.c (__mf_state_1): Initialize to reentrant.
+# Check for the name of the symbol used for the entry point.
+echo "$as_me:$LINENO: checking for the name of the symbol used for the entry point" >&5
+echo $ECHO_N "checking for the name of the symbol used for the entry point... $ECHO_C" >&6
+if test "${mudflap_cv_entry_point+set}" = set; then
+ echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+for name in _start __start unknown; do
+ cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h. */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h. */
+extern char $name;
+int
+main ()
+{
+$name = 0;
+ ;
+ return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+ (eval $ac_link) 2>conftest.er1
+ ac_status=$?
+ grep -v '^ *+' conftest.er1 >conftest.err
+ rm -f conftest.er1
+ cat conftest.err >&5
+ echo "$as_me:$LINENO: \$? = $ac_status" >&5
+ (exit $ac_status); } &&
+ { ac_try='test -z "$ac_c_werror_flag"
+ || test ! -s conftest.err'
+ { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+ (eval $ac_try) 2>&5
+ ac_status=$?
+ echo "$as_me:$LINENO: \$? = $ac_status" >&5
+ (exit $ac_status); }; } &&
+ { ac_try='test -s conftest$ac_exeext'
+ { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+ (eval $ac_try) 2>&5
+ ac_status=$?
+ echo "$as_me:$LINENO: \$? = $ac_status" >&5
+ (exit $ac_status); }; }; then
+ break
+else
+ echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+fi
+rm -f conftest.err conftest.$ac_objext \
+ conftest$ac_exeext conftest.$ac_ext
+done
+mudflap_cv_entry_point="$name"
+fi
+echo "$as_me:$LINENO: result: $mudflap_cv_entry_point" >&5
+echo "${ECHO_T}$mudflap_cv_entry_point" >&6
+if test "$mudflap_cv_entry_point" = unknown; then
+ { { echo "$as_me:$LINENO: error: none of the known symbol names works" >&5
+echo "$as_me: error: none of the known symbol names works" >&2;}
+ { (exit 1); exit 1; }; }
+fi
+
+cat >>confdefs.h <<_ACEOF
+#define ENTRY_POINT $mudflap_cv_entry_point
+_ACEOF
+
+
+
if test ${multilib} = yes; then
multilib_arg="--enable-multilib"
else
AC_SUBST(SECTION_FLAGS)
+# Check for the name of the symbol used for the entry point.
+AC_CACHE_CHECK([for the name of the symbol used for the entry point],
+ [mudflap_cv_entry_point], [
+for name in _start __start unknown; do
+ AC_LINK_IFELSE([AC_LANG_PROGRAM([extern char $name;], [$name = 0;])],
+ [break])
+done
+mudflap_cv_entry_point="$name"])
+if test "$mudflap_cv_entry_point" = unknown; then
+ AC_MSG_ERROR([none of the known symbol names works])
+fi
+AC_DEFINE_UNQUOTED([ENTRY_POINT], [$mudflap_cv_entry_point],
+ [Define to the name of the symbol used for the entry point.])
+
+
if test ${multilib} = yes; then
multilib_arg="--enable-multilib"
else
extern char _end;
-extern char _start;
+extern char ENTRY_POINT;
/* Run some quick validation of the given region.
}
- /* The third heuristic is to approve all accesses between _start and _end,
- which should include all text and initialized data. */
+ /* The third heuristic is to approve all accesses between _start (or its
+ equivalent for the given target) and _end, which should include all
+ text and initialized data. */
if (__mf_opts.heur_start_end)
- if (ptr >= (uintptr_t) & _start && ptr_high <= (uintptr_t) & _end)
+ if (ptr >= (uintptr_t) & ENTRY_POINT && ptr_high <= (uintptr_t) & _end)
return 1; /* uncacheable */
return 0; /* unknown */