hrev56176 adds 1 changeset to branch 'master'
old head: 36ef2106b713c4d5296c28545fe350c2be97d283
new head: 9690b012b467828662af0bcc7d12cdf32f32cfcc
overview:
https://git.haiku-os.org/haiku/log/?qt=range&q=9690b012b467+%5E36ef2106b713
----------------------------------------------------------------------------
9690b012b467: libroot/musl: Import riscv64 atomic_arch.h.
[ Augustin Cavalier <waddlesplash@xxxxxxxxx> ]
----------------------------------------------------------------------------
Revision: hrev56176
Commit: 9690b012b467828662af0bcc7d12cdf32f32cfcc
URL: https://git.haiku-os.org/haiku/commit/?id=9690b012b467
Author: Augustin Cavalier <waddlesplash@xxxxxxxxx>
Date: Thu Jun 9 22:46:09 2022 UTC
----------------------------------------------------------------------------
1 file changed, 38 insertions(+)
.../posix/musl/arch/riscv64/atomic_arch.h | 38 ++++++++++++++++++++
----------------------------------------------------------------------------
diff --git a/src/system/libroot/posix/musl/arch/riscv64/atomic_arch.h
b/src/system/libroot/posix/musl/arch/riscv64/atomic_arch.h
new file mode 100644
index 0000000000..0c38258868
--- /dev/null
+++ b/src/system/libroot/posix/musl/arch/riscv64/atomic_arch.h
@@ -0,0 +1,38 @@
+#define a_barrier a_barrier
+static inline void a_barrier()
+{
+ __asm__ __volatile__ ("fence rw,rw" : : : "memory");
+}
+
+#define a_cas a_cas
+static inline int a_cas(volatile int *p, int t, int s)
+{
+ int old, tmp;
+ __asm__ __volatile__ (
+ "\n1: lr.w.aqrl %0, (%2)\n"
+ " bne %0, %3, 1f\n"
+ " sc.w.aqrl %1, %4, (%2)\n"
+ " bnez %1, 1b\n"
+ "1:"
+ : "=&r"(old), "=&r"(tmp)
+ : "r"(p), "r"((long)t), "r"((long)s)
+ : "memory");
+ return old;
+}
+
+#define a_cas_p a_cas_p
+static inline void *a_cas_p(volatile void *p, void *t, void *s)
+{
+ void *old;
+ int tmp;
+ __asm__ __volatile__ (
+ "\n1: lr.d.aqrl %0, (%2)\n"
+ " bne %0, %3, 1f\n"
+ " sc.d.aqrl %1, %4, (%2)\n"
+ " bnez %1, 1b\n"
+ "1:"
+ : "=&r"(old), "=&r"(tmp)
+ : "r"(p), "r"(t), "r"(s)
+ : "memory");
+ return old;
+}
