From 94c25baf85ebb409a8a7a26a90df73366ce4dfe8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Herm=C3=A8s=20B=C3=A9lusca-Ma=C3=AFto?=
 <hermes.belusca-maito@reactos.org>
Date: Tue, 8 Mar 2022 04:55:17 +0100
Subject: [PATCH] [HAL][HALARM] The HAL should only use KPCR.

And why the ARM HAL uses KPCR::InterruptRoutine, a field only defined
in *powerpc*/ketypes.h, is beyond me, but OK...

See Timo vs. Alex discussion, explaining that KIPCR is a ReactOS-only
thing: https://reactos.org/archives/public/ros-dev/2008-August/010549.html
---
 hal/halarm/generic/pic.c   | 6 +++---
 hal/halarm/generic/timer.c | 2 +-
 hal/halarm/generic/usage.c | 2 +-
 hal/halx86/generic/bios.c  | 8 ++++----
 hal/halx86/mp/mpsirql.c    | 8 ++++----
 5 files changed, 13 insertions(+), 13 deletions(-)

diff --git a/hal/halarm/generic/pic.c b/hal/halarm/generic/pic.c
index a8c68cd6f67..8b99e462aa5 100644
--- a/hal/halarm/generic/pic.c
+++ b/hal/halarm/generic/pic.c
@@ -92,7 +92,7 @@ UCHAR HalpMaskTable[HIGH_LEVEL + 1] =
 VOID
 HalpInitializeInterrupts(VOID)
 {
-    PKIPCR Pcr = (PKIPCR)KeGetPcr();
+    PKPCR Pcr = KeGetPcr();
 
     /* Fill out the IRQL mappings */
     RtlCopyMemory(Pcr->IrqlTable, HalpIrqlTable, sizeof(Pcr->IrqlTable));
@@ -187,7 +187,7 @@ FASTCALL
 KfRaiseIrql(IN KIRQL NewIrql)
 {
     ARM_STATUS_REGISTER Flags;
-    PKIPCR Pcr = (PKIPCR)KeGetPcr();
+    PKPCR Pcr = KeGetPcr();
     KIRQL CurrentIrql;
     ULONG InterruptMask;
 
@@ -232,7 +232,7 @@ FASTCALL
 KfLowerIrql(IN KIRQL NewIrql)
 {
     ARM_STATUS_REGISTER Flags;
-    PKIPCR Pcr = (PKIPCR)KeGetPcr();
+    PKPCR Pcr = KeGetPcr();
     ULONG InterruptMask;
 
     /* Disableinterrupts */
diff --git a/hal/halarm/generic/timer.c b/hal/halarm/generic/timer.c
index 0a84b7446ad..b83a64dc205 100644
--- a/hal/halarm/generic/timer.c
+++ b/hal/halarm/generic/timer.c
@@ -53,7 +53,7 @@ HalpStallInterrupt(VOID)
 VOID
 HalpInitializeClock(VOID)
 {
-    PKIPCR Pcr = (PKIPCR)KeGetPcr();
+    PKPCR Pcr = KeGetPcr();
     ULONG ClockInterval;
     SP804_CONTROL_REGISTER ControlRegister;
 
diff --git a/hal/halarm/generic/usage.c b/hal/halarm/generic/usage.c
index 3f44107181e..a302c118558 100644
--- a/hal/halarm/generic/usage.c
+++ b/hal/halarm/generic/usage.c
@@ -54,7 +54,7 @@ HalpEnableInterruptHandler(IN UCHAR Flags,
                            IN KINTERRUPT_MODE Mode)
 {
     /* Register the routine */
-    ((PKIPCR)KeGetPcr())->InterruptRoutine[Irql] = Handler;
+    KeGetPcr()->InterruptRoutine[Irql] = Handler;
 }
 
 /* PUBLIC FUNCTIONS ***********************************************************/
diff --git a/hal/halx86/generic/bios.c b/hal/halx86/generic/bios.c
index aac2502a872..be5e082d1fc 100644
--- a/hal/halx86/generic/bios.c
+++ b/hal/halx86/generic/bios.c
@@ -302,7 +302,7 @@ HalpBorrowTss(VOID)
     // Get the current TSS and its GDT entry
     //
     Tss = Ke386GetTr();
-    TssGdt = &((PKIPCR)KeGetPcr())->GDT[Tss / sizeof(KGDTENTRY)];
+    TssGdt = &KeGetPcr()->GDT[Tss / sizeof(KGDTENTRY)];
 
     //
     // Get the KTSS limit and check if it has IOPM space
@@ -324,7 +324,7 @@ HalpBorrowTss(VOID)
     //
     // Get the "real" TSS
     //
-    TssGdt = &((PKIPCR)KeGetPcr())->GDT[KGDT_TSS / sizeof(KGDTENTRY)];
+    TssGdt = &KeGetPcr()->GDT[KGDT_TSS / sizeof(KGDTENTRY)];
     TssBase = (PKTSS)(ULONG_PTR)(TssGdt->BaseLow |
                                  TssGdt->HighWord.Bytes.BaseMid << 16 |
                                  TssGdt->HighWord.Bytes.BaseHi << 24);
@@ -358,7 +358,7 @@ HalpReturnTss(VOID)
     //
     // Get the original TSS
     //
-    TssGdt = &((PKIPCR)KeGetPcr())->GDT[HalpSavedTss / sizeof(KGDTENTRY)];
+    TssGdt = &KeGetPcr()->GDT[HalpSavedTss / sizeof(KGDTENTRY)];
     TssBase = (PKTSS)(ULONG_PTR)(TssGdt->BaseLow |
                                  TssGdt->HighWord.Bytes.BaseMid << 16 |
                                  TssGdt->HighWord.Bytes.BaseHi << 24);
@@ -670,7 +670,7 @@ HalpBiosDisplayReset(VOID)
     // the cmpxchg8b lock errata. Unprotect them here so we can set our custom
     // invalid op-code handler.
     //
-    IdtPte = HalAddressToPte(((PKIPCR)KeGetPcr())->IDT);
+    IdtPte = HalAddressToPte(KeGetPcr()->IDT);
     RestoreWriteProtection = IdtPte->Write != 0;
     IdtPte->Write = 1;
 
diff --git a/hal/halx86/mp/mpsirql.c b/hal/halx86/mp/mpsirql.c
index 604b07b82c2..95ef20799f9 100644
--- a/hal/halx86/mp/mpsirql.c
+++ b/hal/halx86/mp/mpsirql.c
@@ -84,10 +84,10 @@ HalpLowerIrql(KIRQL NewIrql, BOOLEAN FromHalEndSystemInterrupt)
     {
       KeSetCurrentIrql (DISPATCH_LEVEL);
       APICWrite(APIC_TPR, IRQL2TPR (DISPATCH_LEVEL) & APIC_TPR_PRI);
-      DpcRequested = __readfsbyte(FIELD_OFFSET(KIPCR, HalReserved[HAL_DPC_REQUEST]));
+      DpcRequested = __readfsbyte(FIELD_OFFSET(KPCR, HalReserved[HAL_DPC_REQUEST]));
       if (FromHalEndSystemInterrupt || DpcRequested)
         {
-          __writefsbyte(FIELD_OFFSET(KIPCR, HalReserved[HAL_DPC_REQUEST]), 0);
+          __writefsbyte(FIELD_OFFSET(KPCR, HalReserved[HAL_DPC_REQUEST]), 0);
           _enable();
           KiDispatchInterrupt();
           if (!(Flags & EFLAGS_INTERRUPT_MASK))
@@ -338,11 +338,11 @@ HalRequestSoftwareInterrupt(IN KIRQL Request)
   switch (Request)
   {
     case APC_LEVEL:
-      __writefsbyte(FIELD_OFFSET(KIPCR, HalReserved[HAL_APC_REQUEST]), 1);
+      __writefsbyte(FIELD_OFFSET(KPCR, HalReserved[HAL_APC_REQUEST]), 1);
       break;
 
     case DISPATCH_LEVEL:
-      __writefsbyte(FIELD_OFFSET(KIPCR, HalReserved[HAL_DPC_REQUEST]), 1);
+      __writefsbyte(FIELD_OFFSET(KPCR, HalReserved[HAL_DPC_REQUEST]), 1);
       break;
 
     default: