[sir_richard] 45241: [HAL]: Implement HalRequestSoftwareInterrupt in C instead of ASM. Remove deprecated ASM code that was unused.
25 Jan
2010
25 Jan
'10
1:26 a.m.
Author: sir_richard
Date: Mon Jan 25 02:26:53 2010
New Revision: 45241
URL: http://svn.reactos.org/svn/reactos?rev=45241&view=rev
Log:
[HAL]: Implement HalRequestSoftwareInterrupt in C instead of ASM. Remove deprecated ASM
code that was unused.
Modified:
trunk/reactos/hal/halx86/generic/irq.S
trunk/reactos/hal/halx86/generic/pic.c
Modified: trunk/reactos/hal/halx86/generic/irq.S
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/hal/halx86/generic/irq.S?r…
==============================================================================
--- trunk/reactos/hal/halx86/generic/irq.S [iso-8859-1] (original)
+++ trunk/reactos/hal/halx86/generic/irq.S [iso-8859-1] Mon Jan 25 02:26:53 2010
@@ -50,40 +50,6 @@
.long 0xFFFFFFFB /* IRQL 30 */
.long 0xFFFFFFFB /* IRQL 31 */
-FindHigherIrqlMask:
- .long 0xFFFFFFFE /* IRQL 0 */
- .long 0xFFFFFFFC /* IRQL 1 */
- .long 0xFFFFFFF8 /* IRQL 2 */
- .long 0xFFFFFFF0 /* IRQL 3 */
- .long 0x7FFFFF0 /* IRQL 4 */
- .long 0x3FFFFF0 /* IRQL 5 */
- .long 0x1FFFFF0 /* IRQL 6 */
- .long 0x0FFFFF0 /* IRQL 7 */
- .long 0x7FFFF0 /* IRQL 8 */
- .long 0x3FFFF0 /* IRQL 9 */
- .long 0x1FFFF0 /* IRQL 10 */
- .long 0x0FFFF0 /* IRQL 11 */
- .long 0x7FFF0 /* IRQL 12 */
- .long 0x3FFF0 /* IRQL 13 */
- .long 0x1FFF0 /* IRQL 14 */
- .long 0x0FFF0 /* IRQL 15 */
- .long 0x7FF0 /* IRQL 16 */
- .long 0x3FF0 /* IRQL 17 */
- .long 0x1FF0 /* IRQL 18 */
- .long 0x1FF0 /* IRQL 19 */
- .long 0x17F0 /* IRQL 20 */
- .long 0x13F0 /* IRQL 21 */
- .long 0x11F0 /* IRQL 22 */
- .long 0x10F0 /* IRQL 23 */
- .long 0x1070 /* IRQL 24 */
- .long 0x1030 /* IRQL 25 */
- .long 0x1010 /* IRQL 26 */
- .long 0x10 /* IRQL 27 */
- .long 0 /* IRQL 28 */
- .long 0 /* IRQL 29 */
- .long 0 /* IRQL 30 */
- .long 0 /* IRQL 31 */
-
SWInterruptLookUpTable:
.byte PASSIVE_LEVEL /* IRR 0 */
.byte PASSIVE_LEVEL /* IRR 1 */
@@ -109,75 +75,6 @@
/* FUNCTIONS *****************************************************************/
-/* HAL interrupt handlers */
-GENERATE_HAL_INT_HANDLERS
-
-.globl _HalpHardwareInterruptLevel
-.func HalpHardwareInterruptLevel
-_HalpHardwareInterruptLevel:
-
- /* Get IRQL and check for pending interrupts */
- mov eax, PCR[KPCR_IRQL]
- mov ecx, PCR[KPCR_IRR]
- and ecx, FindHigherIrqlMask[eax*4]
- jz NothingHardware
-
- /* Check the active IRR */
- test dword ptr PCR[KPCR_IRR_ACTIVE], 0xFFFFFFF0
- jnz NothingHardware
-
- /* Check for pending software interrupts */
- mov eax, ecx
- bsr ecx, eax
- mov eax, 1
- shl eax, cl
-
- /* Clear IRR */
- xor PCR[KPCR_IRR], eax
-
- /* Now dispatch the interrupt */
- call SWInterruptHandlerTable[ecx*4]
-
-NothingHardware:
- ret
-.endfunc
-
-.globl @HalRequestSoftwareInterrupt@4
-.func @HalRequestSoftwareInterrupt@4, @HalRequestSoftwareInterrupt@4
-@HalRequestSoftwareInterrupt@4:
-
- /* Get IRR mask */
- mov eax, 1
- shl eax, cl
-
- /* Disable interrupts */
- pushf
- cli
-
- /* Set IRR and get IRQL */
- or PCR[KPCR_IRR], eax
- mov ecx, PCR[KPCR_IRQL]
-
- /* Get software IRR mask */
- mov eax, PCR[KPCR_IRR]
- and eax, 3
-
- /* Get highest pending software interrupt and check if it's higher */
- xor edx, edx
- mov dl, SWInterruptLookUpTable[eax]
- cmp dl, cl
- jbe AfterCall
-
- /* Call the pending interrupt */
- call SWInterruptHandlerTable[edx*4]
-
-AfterCall:
-
- /* Retore interrupts and return */
- popf
- ret
-.endfunc
-
.globl _HalEndSystemInterrupt@8
.func HalEndSystemInterrupt@8
_HalEndSystemInterrupt@8:
Modified: trunk/reactos/hal/halx86/generic/pic.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/hal/halx86/generic/pic.c?r…
==============================================================================
--- trunk/reactos/hal/halx86/generic/pic.c [iso-8859-1] (original)
+++ trunk/reactos/hal/halx86/generic/pic.c [iso-8859-1] Mon Jan 25 02:26:53 2010
@@ -498,6 +498,32 @@
*/
VOID
FASTCALL
+HalRequestSoftwareInterrupt(IN KIRQL Irql)
+{
+ ULONG EFlags;
+ PKPCR Pcr = KeGetPcr();
+ KIRQL PendingIrql;
+
+ /* Save EFlags and disable interrupts */
+ EFlags = __readeflags();
+ _disable();
+
+ /* Mask out the requested bit */
+ Pcr->IRR |= (1 << Irql);
+
+ /* Check for pending software interrupts and compare with current IRQL */
+ PendingIrql = SWInterruptLookUpTable[Pcr->IRR & 3];
+ if (PendingIrql > Pcr->Irql) SWInterruptHandlerTable[PendingIrql]();
+
+ /* Restore interrupt state */
+ __writeeflags(EFlags);
+}
+
+/*
+ * @implemented
+ */
+VOID
+FASTCALL
HalClearSoftwareInterrupt(IN KIRQL Irql)
{
/* Mask out the requested bit */
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