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ck: No hardware barriers in uniprocessor configs

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Update #3472.
This commit is contained in:
Sebastian Huber 2018-09-14 14:04:09 +02:00
parent 3489e3b639
commit 1af372a5ee
3 changed files with 21 additions and 4 deletions
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3
freebsd/sys/contrib/ck/include/ck_cc.h
View File

@ -28,6 +28,9 @@
#ifndef CK_CC_H
#define CK_CC_H
#ifdef __rtems__
#include <rtems/score/cpuopts.h>
#endif /* __rtems__ */
#if defined(__GNUC__) || defined(__SUNPRO_C)
#include "gcc/ck_cc.h"
#endif

9
freebsd/sys/contrib/ck/include/gcc/arm/ck_pr.h
View File

@ -54,7 +54,8 @@ ck_pr_stall(void)
return;
}
#if defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__)
#if __ARM_ARCH >= 7 || defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__)
#ifdef RTEMS_SMP
#define CK_ISB __asm __volatile("isb" : : "r" (0) : "memory")
#define CK_DMB __asm __volatile("dmb" : : "r" (0) : "memory")
#define CK_DSB __asm __volatile("dsb" : : "r" (0) : "memory")
@ -64,6 +65,12 @@ ck_pr_stall(void)
#else
#define CK_DMB_ST __asm __volatile("dmb st" : : "r" (0) : "memory")
#endif /* __FreeBSD__ */
#else /* !RTEMS_SMP */
#define CK_ISB __asm __volatile("" : : "r" (0) : "memory")
#define CK_DMB __asm __volatile("" : : "r" (0) : "memory")
#define CK_DSB __asm __volatile("" : : "r" (0) : "memory")
#define CK_DMB_ST __asm __volatile("" : : "r" (0) : "memory")
#endif /* RTEMS_SMP */
#else
/* armv6 doesn't have dsb/dmb/isb, and no way to wait only for stores */
#define CK_ISB \

13
freebsd/sys/contrib/ck/include/gcc/ppc/ck_pr.h
View File

@ -67,22 +67,28 @@ ck_pr_stall(void)
__asm__ __volatile__(I ::: "memory"); \
}
#ifdef RTEMS_SMP
#ifdef CK_MD_PPC32_LWSYNC
#define CK_PR_LWSYNCOP "lwsync"
#else /* CK_MD_PPC32_LWSYNC_DISABLE */
#define CK_PR_LWSYNCOP "sync"
#endif
#define CK_PR_SYNCOP "sync"
#else /* !RTEMS_SMP */
#define CK_PR_LWSYNCOP ""
#define CK_PR_SYNCOP ""
#endif /* RTEMS_SMP */
CK_PR_FENCE(atomic, CK_PR_LWSYNCOP)
CK_PR_FENCE(atomic_store, CK_PR_LWSYNCOP)
CK_PR_FENCE(atomic_load, "sync")
CK_PR_FENCE(atomic_load, CK_PR_SYNCOP)
CK_PR_FENCE(store_atomic, CK_PR_LWSYNCOP)
CK_PR_FENCE(load_atomic, CK_PR_LWSYNCOP)
CK_PR_FENCE(store, CK_PR_LWSYNCOP)
CK_PR_FENCE(store_load, "sync")
CK_PR_FENCE(store_load, CK_PR_SYNCOP)
CK_PR_FENCE(load, CK_PR_LWSYNCOP)
CK_PR_FENCE(load_store, CK_PR_LWSYNCOP)
CK_PR_FENCE(memory, "sync")
CK_PR_FENCE(memory, CK_PR_SYNCOP)
CK_PR_FENCE(acquire, CK_PR_LWSYNCOP)
CK_PR_FENCE(release, CK_PR_LWSYNCOP)
CK_PR_FENCE(acqrel, CK_PR_LWSYNCOP)
@ -90,6 +96,7 @@ CK_PR_FENCE(lock, CK_PR_LWSYNCOP)
CK_PR_FENCE(unlock, CK_PR_LWSYNCOP)
#undef CK_PR_LWSYNCOP
#undef CK_PR_SYNCOP
#undef CK_PR_FENCE