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[HAL] Merge HalpAcquireSystemHardwareSpinLock and HalpReleaseCmosSpinLock from Timo's AMD64 branch, and delete ASM implementations.

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svn path=/trunk/; revision=45233
This commit is contained in:
Sir Richard 2010-01-24 23:12:30 +00:00
parent 47d6a16b10
commit ab8a8ee784
2 changed files with 42 additions and 70 deletions
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40
reactos/hal/halx86/generic/spinlock.c
View file

@ -113,6 +113,46 @@ KxReleaseSpinLock(IN PKSPIN_LOCK SpinLock)
#endif
/* GLOBALS ********************************************************************/
ULONG HalpSystemHardwareFlags;
KSPIN_LOCK HalpSystemHardwareLock;
/* PRIVATE FUNCTIONS **********************************************************/
VOID
NTAPI
HalpAcquireSystemHardwareSpinLock(VOID)
{
ULONG Flags;
/* Get flags and disable interrupts */
Flags = __readeflags();
_disable();
/* Acquire the lock */
KxAcquireSpinLock(&HalpSystemHardwareLock);
/* We have the lock, save the flags now */
HalpSystemHardwareFlags = Flags;
}
VOID
NTAPI
HalpReleaseCmosSpinLock(VOID)
{
ULONG Flags;
/* Get the flags */
Flags = HalpSystemHardwareFlags;
/* Release the lock */
KxReleaseSpinLock(&HalpSystemHardwareLock);
/* Restore the flags */
__writeeflags(Flags);
}
/* FUNCTIONS *****************************************************************/
/*

72
reactos/hal/halx86/generic/systimer.S
View file

@ -13,8 +13,10 @@
/* GLOBALS *******************************************************************/
.globl _HalpPerfCounter
_HalpLastPerfCounterLow: .long 0
_HalpLastPerfCounterHigh: .long 0
_HalpPerfCounter:
_HalpPerfCounterLow: .long 0
_HalpPerfCounterHigh: .long 0
_HalpSystemHardwareFlags: .long 0
@ -24,76 +26,6 @@ _UnhandledMsg:
/* FUNCTIONS *****************************************************************/
.global _HalpReleaseCmosSpinLock@0
.func HalpReleaseCmosSpinLock@0
_HalpReleaseCmosSpinLock@0:
#ifdef CONFIG_SMP
/* Save clobbered register */
push eax
/* Push saved EFLAGS */
push _HalpSystemHardwareFlags
/* Release the lock */
lea eax, _HalpSystemHardwareLock
RELEASE_SPINLOCK(eax)
/* Restore EFLAGS */
popf
/* Return */
pop eax
ret
#else
/* Restore EFLAGS and return */
push _HalpSystemHardwareFlags
popf
ret
#endif
.endfunc
.global _HalpAcquireSystemHardwareSpinLock@0
.func HalpAcquireSystemHardwareSpinLock@0
_HalpAcquireSystemHardwareSpinLock@0:
#ifdef CONFIG_SMP
/* Save clobbered register */
push eax
HardwareLock:
/* Save EFLAGS and disable interrupts */
pushf
cli
/* This is the CMOS lock, acquire it */
lea eax, _HalpSystemHardwareLock
ACQUIRE_SPINLOCK(eax, CmosSpin)
/* We have it, return the flags */
pop _HalpSystemHardwareFlags
pop eax
ret
CmosSpin:
/* Restore EFLAGS */
pushf _HalpSystemHardwareLock
popf
/* Spin */
SPIN_ON_LOCK(eax, HardwareLock)
#else
/* Save EFLAGS, disable interrupts and return */
pushf
cli
pop _HalpSystemHardwareFlags
ret
#endif
.endfunc
.global _HalpCalibrateStallExecution@0
.func HalpCalibrateStallExecution@0
_HalpCalibrateStallExecution@0: