From 33a55f2919b6667660c3d1f87ac0969fb76f26fe Mon Sep 17 00:00:00 2001
From: Richard Henderson <rth@redhat.com>
Date: Sat, 12 Nov 2011 07:39:44 -0800
Subject: [PATCH] hppa: Install __sync libfuncs for linux.

        * config/pa/pa-linux.h (TARGET_SYNC_LIBCALL): New.
        * config/pa/pa.h (TARGET_SYNC_LIBCALL): New default.
        * config/pa/pa.c (pa_init_libfuncs): Use init_sync_libfuncs.

From-SVN: r181320
---
 gcc/ChangeLog            | 6 ++++++
 gcc/config/pa/pa-linux.h | 3 +++
 gcc/config/pa/pa.c       | 3 +++
 gcc/config/pa/pa.h       | 5 +++++
 4 files changed, 17 insertions(+)

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index d2cdaa9b64a..592ea0ad4c3 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2011-11-12  Richard Henderson  <rth@redhat.com>
+
+	* config/pa/pa-linux.h (TARGET_SYNC_LIBCALL): New.
+	* config/pa/pa.h (TARGET_SYNC_LIBCALL): New default.
+	* config/pa/pa.c (pa_init_libfuncs): Use init_sync_libfuncs.
+
 2011-11-12  Iain Sandoe  <iains@gcc.gnu.org>
 
 	PR target/45233
diff --git a/gcc/config/pa/pa-linux.h b/gcc/config/pa/pa-linux.h
index 6c6cf210aa4..addc0e18c8b 100644
--- a/gcc/config/pa/pa-linux.h
+++ b/gcc/config/pa/pa-linux.h
@@ -136,3 +136,6 @@ along with GCC; see the file COPYING3.  If not see
 /* Linux always uses gas.  */
 #undef TARGET_GAS
 #define TARGET_GAS 1
+
+#undef TARGET_SYNC_LIBCALL
+#define TARGET_SYNC_LIBCALL 1
diff --git a/gcc/config/pa/pa.c b/gcc/config/pa/pa.c
index 66574bad2fa..134f1f88be8 100644
--- a/gcc/config/pa/pa.c
+++ b/gcc/config/pa/pa.c
@@ -5587,6 +5587,9 @@ pa_init_libfuncs (void)
       set_conv_libfunc (ufloat_optab, TFmode, DImode,
 			"_U_Qfcnvxf_udbl_to_quad");
     }
+
+  if (TARGET_SYNC_LIBCALL)
+    init_sync_libfuncs (UNITS_PER_WORD);
 }
 
 /* HP's millicode routines mean something special to the assembler.
diff --git a/gcc/config/pa/pa.h b/gcc/config/pa/pa.h
index 2f1295b0fbf..c52e3d50877 100644
--- a/gcc/config/pa/pa.h
+++ b/gcc/config/pa/pa.h
@@ -74,6 +74,11 @@ extern unsigned long total_code_bytes;
 #define HPUX_LONG_DOUBLE_LIBRARY 0
 #endif
 
+/* Linux kernel atomic operation support.  */
+#ifndef TARGET_SYNC_LIBCALL
+#define TARGET_SYNC_LIBCALL 0
+#endif
+
 /* The following three defines are potential target switches.  The current
    defines are optimal given the current capabilities of GAS and GNU ld.  */