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nuttx/libc: arch_atomic.c uses IRQ switching, no SMP support
The atomic implementation of machine/arch_atomic.c is achieved by switching interrupts. This version does not support SMP. Signed-off-by: zhangyu117 <zhangyu117@xiaomi.com>
This commit is contained in:
zhangyu117
Xiang Xiao
parent
583f335a52
commit
0641fb9e5c
1 changed files with 36 additions and 42 deletions
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@ -31,12 +31,6 @@
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#include <nuttx/spinlock.h>
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#include <nuttx/macro.h>
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/****************************************************************************
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* Private Data
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****************************************************************************/
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static spinlock_t g_atomic_lock = SP_UNLOCKED;
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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@ -46,11 +40,11 @@ static spinlock_t g_atomic_lock = SP_UNLOCKED;
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void weak_function CONCATENATE(fn, n)(FAR volatile void *ptr, \
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type value, int memorder) \
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{ \
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irqstate_t irqstate = spin_lock_irqsave_notrace(&g_atomic_lock); \
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irqstate_t irqstate = up_irq_save(); \
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\
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*(FAR type *)ptr = value; \
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\
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spin_unlock_irqrestore_notrace(&g_atomic_lock, irqstate); \
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up_irq_restore(irqstate); \
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}
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#define LOAD(fn, n, type) \
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@ -58,11 +52,11 @@ static spinlock_t g_atomic_lock = SP_UNLOCKED;
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type weak_function CONCATENATE(fn, n)(FAR const volatile void *ptr, \
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int memorder) \
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{ \
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irqstate_t irqstate = spin_lock_irqsave_notrace(&g_atomic_lock); \
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irqstate_t irqstate = up_irq_save(); \
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\
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type ret = *(FAR type *)ptr; \
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\
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spin_unlock_irqrestore_notrace(&g_atomic_lock, irqstate); \
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up_irq_restore(irqstate); \
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return ret; \
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}
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@ -71,13 +65,13 @@ static spinlock_t g_atomic_lock = SP_UNLOCKED;
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type weak_function CONCATENATE(fn, n)(FAR volatile void *ptr, \
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type value, int memorder) \
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{ \
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irqstate_t irqstate = spin_lock_irqsave_notrace(&g_atomic_lock); \
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irqstate_t irqstate = up_irq_save(); \
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FAR type *tmp = (FAR type *)ptr; \
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\
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type ret = *tmp; \
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*tmp = value; \
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\
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spin_unlock_irqrestore_notrace(&g_atomic_lock, irqstate); \
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up_irq_restore(irqstate); \
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return ret; \
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}
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@ -89,7 +83,7 @@ static spinlock_t g_atomic_lock = SP_UNLOCKED;
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int success, int failure) \
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{ \
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bool ret = false; \
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irqstate_t irqstate = spin_lock_irqsave_notrace(&g_atomic_lock); \
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irqstate_t irqstate = up_irq_save(); \
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FAR type *tmpmem = (FAR type *)mem; \
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FAR type *tmpexp = (FAR type *)expect; \
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\
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@ -103,7 +97,7 @@ static spinlock_t g_atomic_lock = SP_UNLOCKED;
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*tmpexp = *tmpmem; \
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} \
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\
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spin_unlock_irqrestore_notrace(&g_atomic_lock, irqstate); \
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up_irq_restore(irqstate); \
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return ret; \
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}
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@ -112,13 +106,13 @@ static spinlock_t g_atomic_lock = SP_UNLOCKED;
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type weak_function CONCATENATE(fn, n)(FAR volatile void *ptr, \
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int memorder) \
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{ \
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irqstate_t irqstate = spin_lock_irqsave_notrace(&g_atomic_lock); \
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irqstate_t irqstate = up_irq_save(); \
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FAR type *tmp = (FAR type *)ptr; \
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type ret = *tmp; \
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\
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*(FAR type *)ptr = 1; \
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\
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spin_unlock_irqrestore_notrace(&g_atomic_lock, irqstate); \
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up_irq_restore(irqstate); \
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return ret; \
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}
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@ -127,13 +121,13 @@ static spinlock_t g_atomic_lock = SP_UNLOCKED;
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type weak_function CONCATENATE(fn, n)(FAR volatile void *ptr, \
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type value, int memorder) \
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{ \
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irqstate_t irqstate = spin_lock_irqsave_notrace(&g_atomic_lock); \
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irqstate_t irqstate = up_irq_save(); \
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FAR type *tmp = (FAR type *)ptr; \
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type ret = *tmp; \
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\
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*tmp = *tmp + value; \
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\
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spin_unlock_irqrestore_notrace(&g_atomic_lock, irqstate); \
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up_irq_restore(irqstate); \
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return ret; \
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}
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@ -142,13 +136,13 @@ static spinlock_t g_atomic_lock = SP_UNLOCKED;
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type weak_function CONCATENATE(fn, n)(FAR volatile void *ptr, \
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type value, int memorder) \
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{ \
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irqstate_t irqstate = spin_lock_irqsave_notrace(&g_atomic_lock); \
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irqstate_t irqstate = up_irq_save(); \
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FAR type *tmp = (FAR type *)ptr; \
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type ret = *tmp; \
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\
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*tmp = *tmp - value; \
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\
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spin_unlock_irqrestore_notrace(&g_atomic_lock, irqstate); \
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up_irq_restore(irqstate); \
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return ret; \
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}
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@ -157,13 +151,13 @@ static spinlock_t g_atomic_lock = SP_UNLOCKED;
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type weak_function CONCATENATE(fn, n)(FAR volatile void *ptr, \
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type value, int memorder) \
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{ \
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irqstate_t irqstate = spin_lock_irqsave_notrace(&g_atomic_lock); \
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irqstate_t irqstate = up_irq_save(); \
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FAR type *tmp = (FAR type *)ptr; \
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type ret = *tmp; \
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\
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*tmp = *tmp & value; \
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\
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spin_unlock_irqrestore_notrace(&g_atomic_lock, irqstate); \
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up_irq_restore(irqstate); \
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return ret; \
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}
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@ -172,13 +166,13 @@ static spinlock_t g_atomic_lock = SP_UNLOCKED;
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type weak_function CONCATENATE(fn, n)(FAR volatile void *ptr, \
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type value, int memorder) \
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{ \
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irqstate_t irqstate = spin_lock_irqsave_notrace(&g_atomic_lock); \
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irqstate_t irqstate = up_irq_save(); \
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FAR type *tmp = (FAR type *)ptr; \
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type ret = *tmp; \
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\
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*tmp = *tmp | value; \
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\
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spin_unlock_irqrestore_notrace(&g_atomic_lock, irqstate); \
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up_irq_restore(irqstate); \
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return ret; \
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}
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@ -187,13 +181,13 @@ static spinlock_t g_atomic_lock = SP_UNLOCKED;
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type weak_function CONCATENATE(fn, n)(FAR volatile void *ptr, \
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type value, int memorder) \
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{ \
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irqstate_t irqstate = spin_lock_irqsave_notrace(&g_atomic_lock); \
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irqstate_t irqstate = up_irq_save(); \
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FAR type *tmp = (FAR type *)ptr; \
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type ret = *tmp; \
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\
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*tmp = *tmp ^ value; \
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\
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spin_unlock_irqrestore_notrace(&g_atomic_lock, irqstate); \
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up_irq_restore(irqstate); \
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return ret; \
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}
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@ -202,12 +196,12 @@ static spinlock_t g_atomic_lock = SP_UNLOCKED;
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type weak_function CONCATENATE(fn, n)(FAR volatile void *ptr, \
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type value) \
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{ \
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irqstate_t irqstate = spin_lock_irqsave_notrace(&g_atomic_lock); \
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irqstate_t irqstate = up_irq_save(); \
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FAR type *tmp = (FAR type *)ptr; \
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\
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*tmp = *tmp + value; \
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\
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spin_unlock_irqrestore_notrace(&g_atomic_lock, irqstate); \
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up_irq_restore(irqstate); \
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return *tmp; \
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}
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@ -216,12 +210,12 @@ static spinlock_t g_atomic_lock = SP_UNLOCKED;
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type weak_function CONCATENATE(fn, n)(FAR volatile void *ptr, \
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type value) \
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{ \
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irqstate_t irqstate = spin_lock_irqsave_notrace(&g_atomic_lock); \
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irqstate_t irqstate = up_irq_save(); \
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FAR type *tmp = (FAR type *)ptr; \
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\
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*tmp = *tmp - value; \
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\
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spin_unlock_irqrestore_notrace(&g_atomic_lock, irqstate); \
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up_irq_restore(irqstate); \
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return *tmp; \
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}
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@ -230,12 +224,12 @@ static spinlock_t g_atomic_lock = SP_UNLOCKED;
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type weak_function CONCATENATE(fn, n)(FAR volatile void *ptr, \
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type value) \
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{ \
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irqstate_t irqstate = spin_lock_irqsave_notrace(&g_atomic_lock); \
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irqstate_t irqstate = up_irq_save(); \
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FAR type *tmp = (FAR type *)ptr; \
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\
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*tmp = *tmp | value; \
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\
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spin_unlock_irqrestore_notrace(&g_atomic_lock, irqstate); \
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up_irq_restore(irqstate); \
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return *tmp; \
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}
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@ -244,12 +238,12 @@ static spinlock_t g_atomic_lock = SP_UNLOCKED;
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type weak_function CONCATENATE(fn, n)(FAR volatile void *ptr, \
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type value) \
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{ \
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irqstate_t irqstate = spin_lock_irqsave_notrace(&g_atomic_lock); \
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irqstate_t irqstate = up_irq_save(); \
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FAR type *tmp = (FAR type *)ptr; \
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\
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*tmp = *tmp & value; \
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\
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spin_unlock_irqrestore_notrace(&g_atomic_lock, irqstate); \
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up_irq_restore(irqstate); \
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return *tmp; \
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}
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@ -258,12 +252,12 @@ static spinlock_t g_atomic_lock = SP_UNLOCKED;
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type weak_function CONCATENATE(fn, n)(FAR volatile void *ptr, \
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type value) \
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{ \
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irqstate_t irqstate = spin_lock_irqsave_notrace(&g_atomic_lock); \
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irqstate_t irqstate = up_irq_save(); \
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FAR type *tmp = (FAR type *)ptr; \
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\
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*tmp = *tmp ^ value; \
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\
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spin_unlock_irqrestore_notrace(&g_atomic_lock, irqstate); \
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up_irq_restore(irqstate); \
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return *tmp; \
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}
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@ -272,12 +266,12 @@ static spinlock_t g_atomic_lock = SP_UNLOCKED;
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type weak_function CONCATENATE(fn, n)(FAR volatile void *ptr, \
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type value) \
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{ \
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irqstate_t irqstate = spin_lock_irqsave_notrace(&g_atomic_lock); \
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irqstate_t irqstate = up_irq_save(); \
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FAR type *tmp = (FAR type *)ptr; \
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\
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*tmp = ~(*tmp & value); \
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\
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spin_unlock_irqrestore_notrace(&g_atomic_lock, irqstate); \
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up_irq_restore(irqstate); \
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return *tmp; \
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}
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@ -288,7 +282,7 @@ static spinlock_t g_atomic_lock = SP_UNLOCKED;
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type newvalue) \
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{ \
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bool ret = false; \
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irqstate_t irqstate = spin_lock_irqsave_notrace(&g_atomic_lock); \
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irqstate_t irqstate = up_irq_save(); \
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FAR type *tmp = (FAR type *)ptr; \
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\
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if (*tmp == oldvalue) \
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@ -297,7 +291,7 @@ static spinlock_t g_atomic_lock = SP_UNLOCKED;
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*tmp = newvalue; \
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} \
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\
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spin_unlock_irqrestore_notrace(&g_atomic_lock, irqstate); \
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up_irq_restore(irqstate); \
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return ret; \
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}
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@ -307,7 +301,7 @@ static spinlock_t g_atomic_lock = SP_UNLOCKED;
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type oldvalue, \
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type newvalue) \
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{ \
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irqstate_t irqstate = spin_lock_irqsave_notrace(&g_atomic_lock); \
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irqstate_t irqstate = up_irq_save(); \
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FAR type *tmp = (FAR type *)ptr; \
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type ret = *tmp; \
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\
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@ -316,7 +310,7 @@ static spinlock_t g_atomic_lock = SP_UNLOCKED;
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*tmp = newvalue; \
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} \
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\
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spin_unlock_irqrestore_notrace(&g_atomic_lock, irqstate); \
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up_irq_restore(irqstate); \
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return ret; \
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}
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