arch: add loongarch64 support.

This patch adds support for loongarch64 for fio. This is tested by building FIO on an loongarch64 Debian 10 system. Signed-off-by: wangguofeng <[email protected]>
loongarch64 · Aug 12, 2021 · a1d409d · a1d409d
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commit a1d409d
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Showing 3 changed files with 15 additions and 2 deletions.
diff --git a/arch/arch-loongarch64.h b/arch/arch-loongarch64.h
@@ -0,0 +1,10 @@
+#ifndef ARCH_LOONGARCH64_H
+#define ARCH_LOONGARCH64_H
+
+#define FIO_ARCH	(arch_loongarch64)
+
+#define read_barrier()		__asm__ __volatile__("dbar 0": : :"memory")
+#define write_barrier()		__asm__ __volatile__("dbar 0": : :"memory")
+#define nop			__asm__ __volatile__("nop")
+
+#endif
diff --git a/arch/arch.h b/arch/arch.h
@@ -19,6 +19,7 @@ enum {
 	arch_hppa,
 	arch_mips,
 	arch_aarch64,
+	arch_loongarch64,
 
 	arch_generic,
 
@@ -77,6 +78,8 @@ extern unsigned long arch_flags;
 #include "arch-hppa.h"
 #elif defined(__aarch64__)
 #include "arch-aarch64.h"
+#elif defined(__loongarch64)
+#include "arch-loongarch64.h"
 #else
 #warning "Unknown architecture, attempting to use generic model."
 #include "arch-generic.h"

diff --git a/os/os-linux-syscall.h b/os/os-linux-syscall.h
@@ -263,8 +263,8 @@
 #define __NR_sys_vmsplice	294
 #endif
 
-/* Linux syscalls for aarch64 */
-#elif defined(ARCH_AARCH64_H)
+/* Linux syscalls for aarch64 and loongarch64 */
+#elif defined(ARCH_AARCH64_H) || defined(ARCH_LOONGARCH64_H)
 #ifndef __NR_ioprio_set
 #define __NR_ioprio_set		30
 #define __NR_ioprio_get		31