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[HAL]: Implement KeGetCurrentIrql, KeRaiseIrqlToDpcLevel, KeRaiseIrqlToSynchLevel, HalClearSoftwareInterrupt in C instead of ASM.

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svn path=/trunk/; revision=45234
This commit is contained in:
Sir Richard 2010-01-24 23:14:08 +00:00
parent ab8a8ee784
commit 575fd458f2
2 changed files with 88 additions and 81 deletions
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81
reactos/hal/halx86/generic/irq.S
View file

@ -174,20 +174,6 @@ NothingHardware:
ret
.endfunc
.globl @HalClearSoftwareInterrupt@4
.func @HalClearSoftwareInterrupt@4, @HalClearSoftwareInterrupt@4
@HalClearSoftwareInterrupt@4:
/* Get IRR mask */
mov eax, 1
shl eax, cl
not eax
/* Set IRR */
and PCR[KPCR_IRR], eax
ret
.endfunc
.globl @HalRequestSoftwareInterrupt@4
.func @HalRequestSoftwareInterrupt@4, @HalRequestSoftwareInterrupt@4
@HalRequestSoftwareInterrupt@4:
@ -699,73 +685,6 @@ InvalidKfRaise:
#endif
.endfunc
.globl _KeGetCurrentIrql@0
.func KeGetCurrentIrql@0
_KeGetCurrentIrql@0:
/* Return the IRQL */
mov eax, PCR[KPCR_IRQL]
ret
.endfunc
.globl _KeRaiseIrqlToDpcLevel@0
.func KeRaiseIrqlToDpcLevel@0
_KeRaiseIrqlToDpcLevel@0:
/* Get the current IRQL */
mov eax, PCR[KPCR_IRQL]
/* Set DISPATCH_LEVEL */
mov dword ptr PCR[KPCR_IRQL], DISPATCH_LEVEL
#if DBG
/* Make sure we were not higher then synch */
cmp eax, DISPATCH_LEVEL
ja InvalidRaise
#endif
ret
#if DBG
InvalidRaise:
/* Bugcheck the system */
push 1
push 0
push DISPATCH_LEVEL
push eax
push IRQL_NOT_GREATER_OR_EQUAL
call _KeBugCheckEx@20
#endif
.endfunc
.globl _KeRaiseIrqlToSynchLevel@0
.func KeRaiseIrqlToSynchLevel@0
_KeRaiseIrqlToSynchLevel@0:
/* Get the current IRQL */
mov eax, PCR[KPCR_IRQL]
/* Set SYNCH_LEVEL */
mov dword ptr PCR[KPCR_IRQL], SYNCH_LEVEL
#if DBG
/* Make sure we were not higher then dispatch */
cmp eax, SYNCH_LEVEL
ja InvalidSyRaise
#endif
ret
#if DBG
InvalidSyRaise:
/* Bugcheck the system */
push 2
push 0
push SYNCH_LEVEL
push eax
push IRQL_NOT_GREATER_OR_EQUAL
call _KeBugCheckEx@20
#endif
.endfunc
.globl _HalpApcInterrupt
.func HalpApcInterrupt
TRAP_FIXUPS hapc_a, hapc_t, DoFixupV86, DoFixupAbios

88
reactos/hal/halx86/generic/pic.c
View file

@ -116,3 +116,91 @@ HalpInitializePICs(IN BOOLEAN EnableInterrupts)
__writeeflags(EFlags);
}
/* IRQL MANAGEMENT ************************************************************/
/*
* @implemented
*/
KIRQL
NTAPI
KeGetCurrentIrql(VOID)
{
/* Return the IRQL */
return KeGetPcr()->Irql;
}
/*
* @implemented
*/
KIRQL
NTAPI
KeRaiseIrqlToDpcLevel(VOID)
{
PKPCR Pcr = KeGetPcr();
KIRQL CurrentIrql;
/* Save and update IRQL */
CurrentIrql = Pcr->Irql;
Pcr->Irql = DISPATCH_LEVEL;
#ifdef IRQL_DEBUG
/* Validate correct raise */
if (CurrentIrql > DISPATCH_LEVEL)
{
/* Crash system */
KeBugCheckEx(IRQL_NOT_GREATER_OR_EQUAL,
CurrentIrql,
DISPATCH_LEVEL,
0,
1);
}
#endif
/* Return the previous value */
return CurrentIrql;
}
/*
* @implemented
*/
KIRQL
NTAPI
KeRaiseIrqlToSynchLevel(VOID)
{
PKPCR Pcr = KeGetPcr();
KIRQL CurrentIrql;
/* Save and update IRQL */
CurrentIrql = Pcr->Irql;
Pcr->Irql = SYNCH_LEVEL;
#ifdef IRQL_DEBUG
/* Validate correct raise */
if (CurrentIrql > SYNCH_LEVEL)
{
/* Crash system */
KeBugCheckEx(IRQL_NOT_GREATER_OR_EQUAL,
CurrentIrql,
SYNCH_LEVEL,
0,
1);
}
#endif
/* Return the previous value */
return CurrentIrql;
}
/* SOFTWARE INTERRUPTS ********************************************************/
/*
* @implemented
*/
VOID
FASTCALL
HalClearSoftwareInterrupt(IN KIRQL Irql)
{
/* Mask out the requested bit */
KeGetPcr()->IRR &= ~(1 << Irql);
}