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-rw-r--r--libpthread/nptl/sysdeps/xtensa/pthread_spin_lock.S16
-rw-r--r--libpthread/nptl/sysdeps/xtensa/pthread_spin_trylock.S17
2 files changed, 33 insertions, 0 deletions
diff --git a/libpthread/nptl/sysdeps/xtensa/pthread_spin_lock.S b/libpthread/nptl/sysdeps/xtensa/pthread_spin_lock.S
index 3386afae9..3faac36da 100644
--- a/libpthread/nptl/sysdeps/xtensa/pthread_spin_lock.S
+++ b/libpthread/nptl/sysdeps/xtensa/pthread_spin_lock.S
@@ -15,16 +15,32 @@
License along with the GNU C Library; see the file COPYING.LIB. If
not, see <http://www.gnu.org/licenses/>.  */
+#include <bits/xtensa-config.h>
#include <sysdep.h>
.text
ENTRY (pthread_spin_lock)
+#if XCHAL_HAVE_EXCLUSIVE
+ memw
+1: l32ex a3, a2
+ bnez a3, 1b
+ movi a3, 1
+ s32ex a3, a2
+ getex a3
+ beqz a3, 1b
+ memw
+#elif XCHAL_HAVE_S32C1I
movi a3, 0
wsr a3, scompare1
movi a3, 1
1: s32c1i a3, a2, 0
bnez a3, 1b
+#else
+
+#error No hardware atomic operations
+
+#endif
movi a2, 0
abi_ret
diff --git a/libpthread/nptl/sysdeps/xtensa/pthread_spin_trylock.S b/libpthread/nptl/sysdeps/xtensa/pthread_spin_trylock.S
index 72b2dda92..0669682ec 100644
--- a/libpthread/nptl/sysdeps/xtensa/pthread_spin_trylock.S
+++ b/libpthread/nptl/sysdeps/xtensa/pthread_spin_trylock.S
@@ -17,15 +17,32 @@
#define _ERRNO_H 1
#include <bits/errno.h>
+#include <bits/xtensa-config.h>
#include <sysdep.h>
.text
ENTRY (pthread_spin_trylock)
+#if XCHAL_HAVE_EXCLUSIVE
+ memw
+ l32ex a3, a2
+ bnez a3, 1f
+ movi a3, 1
+ s32ex a3, a2
+ getex a3
+ addi a3, a3, -1
+ memw
+1:
+#elif XCHAL_HAVE_S32C1I
movi a3, 0
wsr a3, scompare1
movi a3, 1
s32c1i a3, a2, 0
+#else
+
+#error No hardware atomic operations
+
+#endif
movi a2, EBUSY
moveqz a2, a3, a3