aarch64: add system call definitions

[fio.git] / arch / arch.h

diff --git a/arch/arch.h b/arch/arch.h
index 0ec3f10feae03f25d372e39ae179fa9987e6dda2..fca003beabf4e606aa1b80af853f973009e8c7ed 100644 (file)
--- a/arch/arch.h
+++ b/arch/arch.h
@@ -1,6 +1,12 @@
 #ifndef ARCH_H
 #define ARCH_H
 
+#ifdef __cplusplus
+#include <atomic>
+#else
+#include <stdatomic.h>
+#endif
+
 #include "../lib/types.h"
 
 enum {
@@ -34,6 +40,36 @@ extern unsigned long arch_flags;
 
 #define ARCH_CPU_CLOCK_WRAPS
 
+#ifdef __cplusplus
+#define atomic_add(p, v)                                               \
+       std::atomic_fetch_add(p, (v))
+#define atomic_sub(p, v)                                               \
+       std::atomic_fetch_sub(p, (v))
+#define atomic_load_relaxed(p)                                 \
+       std::atomic_load_explicit(p,                            \
+                            std::memory_order_relaxed)
+#define atomic_load_acquire(p)                                 \
+       std::atomic_load_explicit(p,                            \
+                            std::memory_order_acquire)
+#define atomic_store_release(p, v)                             \
+       std::atomic_store_explicit(p, (v),                      \
+                            std::memory_order_release)
+#else
+#define atomic_add(p, v)                                       \
+       atomic_fetch_add((_Atomic typeof(*(p)) *)(p), v)
+#define atomic_sub(p, v)                                       \
+       atomic_fetch_sub((_Atomic typeof(*(p)) *)(p), v)
+#define atomic_load_relaxed(p)                                 \
+       atomic_load_explicit((_Atomic typeof(*(p)) *)(p),       \
+                            memory_order_relaxed)
+#define atomic_load_acquire(p)                                 \
+       atomic_load_explicit((_Atomic typeof(*(p)) *)(p),       \
+                            memory_order_acquire)
+#define atomic_store_release(p, v)                             \
+       atomic_store_explicit((_Atomic typeof(*(p)) *)(p), (v), \
+                             memory_order_release)
+#endif
+
 /* IWYU pragma: begin_exports */
 #if defined(__i386__)
 #include "arch-x86.h"
@@ -76,4 +112,32 @@ static inline int arch_init(char *envp[])
 }
 #endif
 
+#ifdef __alpha__
+/*
+ * alpha is the only exception, all other architectures
+ * have common numbers for new system calls.
+ */
+# ifndef __NR_io_uring_setup
+#  define __NR_io_uring_setup          535
+# endif
+# ifndef __NR_io_uring_enter
+#  define __NR_io_uring_enter          536
+# endif
+# ifndef __NR_io_uring_register
+#  define __NR_io_uring_register       537
+# endif
+#else /* !__alpha__ */
+# ifndef __NR_io_uring_setup
+#  define __NR_io_uring_setup          425
+# endif
+# ifndef __NR_io_uring_enter
+#  define __NR_io_uring_enter          426
+# endif
+# ifndef __NR_io_uring_register
+#  define __NR_io_uring_register       427
+# endif
+#endif
+
+#define ARCH_HAVE_IOURING
+
 #endif