From 881532cf197314301eac976e1772f8ed51ae727a Mon Sep 17 00:00:00 2001

From: Alexey Shabalin <shaba@altlinux.org>

Date: Tue, 23 Aug 2022 19:11:16 +0300

Subject: [PATCH] vdo-8.2.0.2 e2k support

e2k support based on patch by Ilya Kurdyukov

---

 utils/uds/atomicDefs.h |  9 +++++++++

 utils/uds/cpu.h        |  2 ++

 2 files changed, 11 insertions(+)

diff --git a/utils/uds/atomicDefs.h b/utils/uds/atomicDefs.h

index 622a985..62d492a 100644

--- a/utils/uds/atomicDefs.h

+++ b/utils/uds/atomicDefs.h

@@ -22,6 +22,9 @@

 #include "compiler.h"

 #include "type-defs.h"

+#ifdef __e2k__

+#include <x86intrin.h>

+#endif

 // The atomic interfaces are chosen to exactly match those interfaces defined

 // by the Linux kernel.  The rest of this file is the matching user-mode

@@ -95,6 +98,8 @@ static INLINE void smp_mb(void)

   __asm__ __volatile__("bcr 14,0" : : : "memory");

 #elif defined __PPC__

   __asm__ __volatile__("sync" : : : "memory");

+#elif defined __e2k__

+  __builtin_ia32_mfence();

 #else

 #error "no fence defined"

 #endif

@@ -120,6 +125,8 @@ static INLINE void smp_rmb(void)

   __asm__ __volatile__("bcr 14,0" : : : "memory");

 #elif defined __PPC__

   __asm__ __volatile__("lwsync" : : : "memory");

+#elif defined __e2k__

+  __builtin_ia32_lfence();

 #else

 #error "no fence defined"

 #endif

@@ -145,6 +152,8 @@ static INLINE void smp_wmb(void)

   __asm__ __volatile__("bcr 14,0" : : : "memory");

 #elif defined __PPC__

   __asm__ __volatile__("lwsync" : : : "memory");

+#elif defined __e2k__

+  __builtin_ia32_sfence();

 #else

 #error "no fence defined"

 #endif

diff --git a/utils/uds/cpu.h b/utils/uds/cpu.h

index e4b39c2..8f0acd2 100644

--- a/utils/uds/cpu.h

+++ b/utils/uds/cpu.h

@@ -22,6 +22,8 @@

 #define CACHE_LINE_BYTES 256

 #elif defined(__x86_64__) || defined(__aarch64__)

 #define CACHE_LINE_BYTES 64

+#elif defined(__e2k__)

+#define CACHE_LINE_BYTES 64

 #else

 #error "unknown cache line size"

 #endif

--

libgit2 1.3.0