53 lines
1.5 KiB
Diff
53 lines
1.5 KiB
Diff
From: Tom Lane <tgl@sss.pgh.pa.us>
|
|
Date: Tue, 4 Jun 2013 19:42:02 +0000 (-0400)
|
|
Subject: Add ARM64 (aarch64) support to s_lock.h.
|
|
X-Git-Url: http://git.postgresql.org/gitweb/?p=postgresql.git;a=commitdiff_plain;h=612ecf311bf253cdb0c54252854c5298aa668203
|
|
|
|
Add ARM64 (aarch64) support to s_lock.h.
|
|
|
|
Use the same gcc atomic functions as we do on newer ARM chips.
|
|
(Basically this is a copy and paste of the __arm__ code block,
|
|
but omitting the SWPB option since that definitely won't work.)
|
|
|
|
Back-patch to 9.2. The patch would work further back, but we'd also
|
|
need to update config.guess/config.sub in older branches to make them
|
|
build out-of-the-box, and there hasn't been demand for it.
|
|
|
|
Mark Salter
|
|
---
|
|
|
|
diff --git a/src/include/storage/s_lock.h b/src/include/storage/s_lock.h
|
|
index d4a783f..29124b1 100644
|
|
--- a/src/include/storage/s_lock.h
|
|
+++ b/src/include/storage/s_lock.h
|
|
@@ -335,6 +335,29 @@ tas(volatile slock_t *lock)
|
|
#endif /* __arm__ */
|
|
|
|
|
|
+/*
|
|
+ * On ARM64, we use __sync_lock_test_and_set(int *, int) if available.
|
|
+ */
|
|
+#if defined(__aarch64__) || defined(__aarch64)
|
|
+#ifdef HAVE_GCC_INT_ATOMICS
|
|
+#define HAS_TEST_AND_SET
|
|
+
|
|
+#define TAS(lock) tas(lock)
|
|
+
|
|
+typedef int slock_t;
|
|
+
|
|
+static __inline__ int
|
|
+tas(volatile slock_t *lock)
|
|
+{
|
|
+ return __sync_lock_test_and_set(lock, 1);
|
|
+}
|
|
+
|
|
+#define S_UNLOCK(lock) __sync_lock_release(lock)
|
|
+
|
|
+#endif /* HAVE_GCC_INT_ATOMICS */
|
|
+#endif /* __aarch64__ */
|
|
+
|
|
+
|
|
/* S/390 and S/390x Linux (32- and 64-bit zSeries) */
|
|
#if defined(__s390__) || defined(__s390x__)
|
|
#define HAS_TEST_AND_SET
|