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From b06a228a5fd1589fc9bed654b3288b321fc21aa1 Mon Sep 17 00:00:00 2001
From: "Richard W.M. Jones" <rjones@redhat.com>
Date: Sun, 20 Nov 2016 15:04:52 +0000
Subject: [PATCH] Add support for RISC-V.
The architecture is sufficiently similar to aarch64 that simply
extending the existing aarch64 macro works.
---
src/include/storage/s_lock.h | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/src/include/storage/s_lock.h b/src/include/storage/s_lock.h
index 3fe29ce..7cd578f 100644
--- a/src/include/storage/s_lock.h
+++ b/src/include/storage/s_lock.h
@@ -316,11 +316,12 @@ tas(volatile slock_t *lock)
/*
* On ARM and ARM64, we use __sync_lock_test_and_set(int *, int) if available.
+ * On RISC-V, the same.
*
* We use the int-width variant of the builtin because it works on more chips
* than other widths.
*/
-#if defined(__arm__) || defined(__arm) || defined(__aarch64__) || defined(__aarch64)
+#if defined(__arm__) || defined(__arm) || defined(__aarch64__) || defined(__aarch64) || defined(__riscv)
#ifdef HAVE_GCC__SYNC_INT32_TAS
#define HAS_TEST_AND_SET
@@ -337,7 +338,7 @@ tas(volatile slock_t *lock)
#define S_UNLOCK(lock) __sync_lock_release(lock)
#endif /* HAVE_GCC__SYNC_INT32_TAS */
-#endif /* __arm__ || __arm || __aarch64__ || __aarch64 */
+#endif /* __arm__ || __arm || __aarch64__ || __aarch64 || __riscv */
/* S/390 and S/390x Linux (32- and 64-bit zSeries) */
--
2.9.3
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