From 5a88eb87265ab500347a22f3969195246d5f5358 Mon Sep 17 00:00:00 2001
From: jiez <jiez@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Fri, 23 Jan 2009 04:58:03 +0000
Subject: 	libmudflap/ 	* mf-impl.h (__mf_get_state, __mf_set_state):
 Don't use 	__thread when TLS support is emulated. 	* mf-hooks3.c
 (__mf_get_state, __mf_set_state): Likewise. 	* mf-runtime.c (__mf_state_1):
 Likewise. 	* configure.ac: Use GCC_CHECK_EMUTLS. 	* configure:
 Regenerate. 	* config.h.in: Regenerate.

	config/
	* tls.m4 (GCC_CHECK_EMUTLS): Define.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@143583 138bc75d-0d04-0410-961f-82ee72b054a4
---
 libmudflap/configure | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)

(limited to 'libmudflap/configure')

diff --git a/libmudflap/configure b/libmudflap/configure
index ad10a2c238d..758ac8f0a30 100755
--- a/libmudflap/configure
+++ b/libmudflap/configure
@@ -13024,6 +13024,37 @@ echo "${ECHO_T}$gcc_cv_have_tls" >&6
 
 cat >>confdefs.h <<\_ACEOF
 #define HAVE_TLS 1
+_ACEOF
+
+  fi
+
+  echo "$as_me:$LINENO: checking whether the thread-local storage support is from emutls" >&5
+echo $ECHO_N "checking whether the thread-local storage support is from emutls... $ECHO_C" >&6
+if test "${gcc_cv_use_emutls+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+    gcc_cv_use_emutls=no
+    echo '__thread int a; int b; int main() { return a = b; }' > conftest.c
+    if { ac_try='${CC-cc} -Werror -S -o conftest.s conftest.c 1>&5'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+      if grep __emutls_get_address conftest.s > /dev/null; then
+	gcc_cv_use_emutls=yes
+      fi
+    fi
+    rm -f conftest.*
+
+fi
+echo "$as_me:$LINENO: result: $gcc_cv_use_emutls" >&5
+echo "${ECHO_T}$gcc_cv_use_emutls" >&6
+  if test "$gcc_cv_use_emutls" = "yes" ; then
+
+cat >>confdefs.h <<\_ACEOF
+#define USE_EMUTLS 1
 _ACEOF
 
   fi
-- 
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