blob: 90b741949534c473a59b477f130136495b93a57f [file] [log] [blame]
Andrew Geissler595f6302022-01-24 19:11:47 +00001From 780fd27ea6f7f2c446c46a7a5e26d94106c67efd Mon Sep 17 00:00:00 2001
Brad Bishop19323692019-04-05 15:28:33 -04002From: "Richard W.M. Jones" <rjones@redhat.com>
3Date: Sun, 20 Nov 2016 15:04:52 +0000
4Subject: [PATCH] Add support for RISC-V.
5
6The architecture is sufficiently similar to aarch64 that simply
7extending the existing aarch64 macro works.
8---
9 src/include/storage/s_lock.h | 5 +++--
10 1 file changed, 3 insertions(+), 2 deletions(-)
11
Andrew Geissler595f6302022-01-24 19:11:47 +000012diff --git a/src/include/storage/s_lock.h b/src/include/storage/s_lock.h
13index dccbd29..ad60429 100644
Brad Bishop19323692019-04-05 15:28:33 -040014--- a/src/include/storage/s_lock.h
15+++ b/src/include/storage/s_lock.h
Andrew Geissler595f6302022-01-24 19:11:47 +000016@@ -317,11 +317,12 @@ tas(volatile slock_t *lock)
Brad Bishop19323692019-04-05 15:28:33 -040017
18 /*
19 * On ARM and ARM64, we use __sync_lock_test_and_set(int *, int) if available.
20+ * On RISC-V, the same.
21 *
22 * We use the int-width variant of the builtin because it works on more chips
23 * than other widths.
24 */
25-#if defined(__arm__) || defined(__arm) || defined(__aarch64__) || defined(__aarch64)
26+#if defined(__arm__) || defined(__arm) || defined(__aarch64__) || defined(__aarch64) || defined(__riscv)
27 #ifdef HAVE_GCC__SYNC_INT32_TAS
28 #define HAS_TEST_AND_SET
29
Andrew Geissler595f6302022-01-24 19:11:47 +000030@@ -338,7 +339,7 @@ tas(volatile slock_t *lock)
Brad Bishop19323692019-04-05 15:28:33 -040031 #define S_UNLOCK(lock) __sync_lock_release(lock)
32
33 #endif /* HAVE_GCC__SYNC_INT32_TAS */
34-#endif /* __arm__ || __arm || __aarch64__ || __aarch64 */
35+#endif /* __arm__ || __arm || __aarch64__ || __aarch64 || __riscv */
36
37
Andrew Geissler595f6302022-01-24 19:11:47 +000038 /*
39--
402.34.1
41