score: Use atomic API for SMP lock

Use a ticket lock implementation based on atomic operations.  Delete CPU
port specific SMP lock implementations.

1 files changed, 0 insertions, 100 deletions

diff --git a/cpukit/score/cpu/i386/rtems/score/cpusmplock.h b/cpukit/score/cpu/i386/rtems/score/cpusmplock.h
deleted file mode 100644
index f9d36e63fe..0000000000
--- a/cpukit/score/cpu/i386/rtems/score/cpusmplock.h
+++ /dev/null
@@ -1,100 +0,0 @@
-/**
- * @file
- *
- * @ingroup ScoreSMPLockI386
- *
- * @brief i386 SMP Lock Implementation
- */
-
-/*
- * COPYRIGHT (c) 1989-2011.
- * On-Line Applications Research Corporation (OAR).
- *
- * Copyright (c) 2013 embedded brains GmbH
- *
- * The license and distribution terms for this file may be
- * found in the file LICENSE in this distribution or at
- * http://www.rtems.com/license/LICENSE.
- */
-
-#ifndef _RTEMS_SCORE_I386_SMPLOCK_H
-#define _RTEMS_SCORE_I386_SMPLOCK_H
-
-#include <rtems/score/cpu.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif /* __cplusplus */
-
-/**
- * @defgroup ScoreSMPLockI386 i386 SMP Locks
- *
- * @ingroup ScoreSMPLock
- *
- * The implementation is Test and Swap.
- *
- * @{
- */
-
-typedef struct {
-  uint32_t locked;
-} CPU_SMP_lock_Control;
-
-#define CPU_SMP_LOCK_INITIALIZER { 0 }
-
-static inline void _CPU_SMP_lock_Initialize( CPU_SMP_lock_Control *lock )
-{
-  lock->locked = 0;
-}
-
-static inline uint32_t _I386_Atomic_swap(
-  volatile uint32_t *address,
-  uint32_t value
-)
-{
-  uint32_t previous;
-
-  asm volatile(
-    "lock; xchgl %0, %1"
-    : "+m" (*address), "=a" (previous)
-    : "1" (value)
-    : "cc"
-  );
-
-  return previous;
-}
-
-static inline void _CPU_SMP_lock_Acquire( CPU_SMP_lock_Control *lock )
-{
-  do {
-    while ( lock->locked ) {
-      RTEMS_COMPILER_MEMORY_BARRIER();
-    }
-  } while ( _I386_Atomic_swap( &lock->locked, 1 ) );
-}
-
-static inline void _CPU_SMP_lock_Release( CPU_SMP_lock_Control *lock )
-{
-  RTEMS_COMPILER_MEMORY_BARRIER();
-  lock->locked = 0;
-}
-
-#define _CPU_SMP_lock_ISR_disable_and_acquire( lock, isr_cookie ) \
-  do { \
-    _CPU_ISR_Disable( isr_cookie ); \
-    _CPU_SMP_lock_Acquire( lock ); \
-  } while (0)
-
-#define _CPU_SMP_lock_Release_and_ISR_enable( lock, isr_cookie ) \
-  do { \
-    _CPU_SMP_lock_Release( lock ); \
-    _CPU_ISR_Enable( isr_cookie ); \
-  } while (0)
-
-/**@}*/
-
-#ifdef __cplusplus
-}
-#endif /* __cplusplus */
-
-#endif /* _RTEMS_SCORE_I386_SMPLOCK_H */