[ros-diffs] [ion] 23676: - Implement Chained and Normal generic interrupt handlers. - Make generated handlers have a proper .func symbol for symbol data. - Make IDT writable, the page shouldn't be read-only. - Change some symbol names.
ion at svn.reactos.org
ion at svn.reactos.org
Thu Aug 24 03:53:54 CEST 2006
Author: ion
Date: Thu Aug 24 05:53:54 2006
New Revision: 23676
URL: http://svn.reactos.org/svn/reactos?rev=23676&view=rev
Log:
- Implement Chained and Normal generic interrupt handlers.
- Make generated handlers have a proper .func symbol for symbol data.
- Make IDT writable, the page shouldn't be read-only.
- Change some symbol names.
Modified:
trunk/reactos/hal/halx86/generic/systimer.S
trunk/reactos/include/ndk/asm.h
trunk/reactos/ntoskrnl/include/internal/i386/asmmacro.S
trunk/reactos/ntoskrnl/ke/i386/kernel.c
trunk/reactos/ntoskrnl/ke/i386/trap.s
Modified: trunk/reactos/hal/halx86/generic/systimer.S
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/hal/halx86/generic/systimer.S?rev=23676&r1=23675&r2=23676&view=diff
==============================================================================
--- trunk/reactos/hal/halx86/generic/systimer.S (original)
+++ trunk/reactos/hal/halx86/generic/systimer.S Thu Aug 24 05:53:54 2006
@@ -23,3 +23,4 @@
jmp $
.endfunc
+
Modified: trunk/reactos/include/ndk/asm.h
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/include/ndk/asm.h?rev=23676&r1=23675&r2=23676&view=diff
==============================================================================
--- trunk/reactos/include/ndk/asm.h (original)
+++ trunk/reactos/include/ndk/asm.h Thu Aug 24 05:53:54 2006
@@ -154,6 +154,16 @@
#define KPCR_PRCB_INTERRUPT_COUNT 0x644
#define KPCR_SYSTEM_CALLS 0x6B8
#define KPCR_PRCB_DPC_ROUTINE_ACTIVE 0x994
+
+//
+// KINTERRUPT Offsets
+//
+#define KINTERRUPT_SERVICE_ROUTINE 0x0C
+#define KINTERRUPT_SERVICE_CONTEXT 0x10
+#define KINTERRUPT_ACTUAL_LOCK 0x1C
+#define KINTERRUPT_IRQL 0x20
+#define KINTERRUPT_VECTOR 0x24
+#define KINTERRUPT_SYNCHRONIZE_IRQL 0x29
//
// KGDTENTRY Offsets
Modified: trunk/reactos/ntoskrnl/include/internal/i386/asmmacro.S
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/include/internal/i386/asmmacro.S?rev=23676&r1=23675&r2=23676&view=diff
==============================================================================
--- trunk/reactos/ntoskrnl/include/internal/i386/asmmacro.S (original)
+++ trunk/reactos/ntoskrnl/include/internal/i386/asmmacro.S Thu Aug 24 05:53:54 2006
@@ -125,9 +125,11 @@
// @remark None.
//
.macro GENERATE_INT_HANDLER Number
+.func KiUnexpectedInterrupt&Number
_KiUnexpectedInterrupt&Number:
push PRIMARY_VECTOR_BASE + Number
- jmp _KiEndUnexpected
+ jmp _KiEndUnexpectedRange at 0
+.endfunc
.endm
//
Modified: trunk/reactos/ntoskrnl/ke/i386/kernel.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/ke/i386/kernel.c?rev=23676&r1=23675&r2=23676&view=diff
==============================================================================
--- trunk/reactos/ntoskrnl/ke/i386/kernel.c (original)
+++ trunk/reactos/ntoskrnl/ke/i386/kernel.c Thu Aug 24 05:53:54 2006
@@ -489,6 +489,7 @@
NTAPI
KeInit2(VOID)
{
+ ULONG Protect;
PKIPCR Pcr = (PKIPCR)KeGetCurrentKPCR();
KiInitializeBugCheck();
@@ -548,6 +549,10 @@
{
DPRINT("Ke386L2CacheSize: %dkB\n", Pcr->SecondLevelCacheSize);
}
+
+ /* Set IDT to writable */
+ Protect = MmGetPageProtect(NULL, (PVOID)KiIdt);
+ MmSetPageProtect(NULL, (PVOID)KiIdt, Protect | PAGE_IS_WRITABLE);
}
VOID INIT_FUNCTION
Modified: trunk/reactos/ntoskrnl/ke/i386/trap.s
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/ke/i386/trap.s?rev=23676&r1=23675&r2=23676&view=diff
==============================================================================
--- trunk/reactos/ntoskrnl/ke/i386/trap.s (original)
+++ trunk/reactos/ntoskrnl/ke/i386/trap.s Thu Aug 24 05:53:54 2006
@@ -59,6 +59,12 @@
/* Interrupt template entrypoints */
.globl _KiInterruptTemplate
.globl _KiInterruptTemplateObject
+.globl _KiInterruptTemplateDispatch
+
+/* Chained and Normal generic interrupt handlers for 1st and 2nd level entry*/
+.globl _KiChainedDispatch2ndLvl at 0
+.globl _KiInterruptDispatch3 at 0
+.globl _KiChainedDispatch at 0
/* We implement the following trap exit points: */
.globl _KiServiceExit /* Exit from syscall */
@@ -70,6 +76,10 @@
_KiIdtDescriptor:
.short 0x800
.long _KiIdt
+
+.globl _KiUnexpectedEntrySize
+_KiUnexpectedEntrySize:
+ .long _KiUnexpectedInterrupt1 - _KiUnexpectedInterrupt0
/* SOFTWARE INTERRUPT SERVICES ***********************************************/
@@ -1301,12 +1311,13 @@
/* UNEXPECTED INTERRUPT HANDLERS **********************************************/
-.globl _KiStartUnexpected
-_KiStartUnexpected:
+.globl _KiStartUnexpectedRange at 0
+_KiStartUnexpectedRange at 0:
GENERATE_INT_HANDLERS
-_KiEndUnexpected:
+.globl _KiEndUnexpectedRange at 0
+_KiEndUnexpectedRange at 0:
jmp _KiUnexpectedInterruptTail
.func KiUnexpectedInterruptTail
@@ -1367,3 +1378,113 @@
_KiInterruptTemplateObject:
/* Dummy jump, will be replaced by the actual jump */
jmp _KeSynchronizeExecution at 12
+
+_KiInterruptTemplateDispatch:
+ /* Marks the end of the template so that the jump above can be edited */
+
+.func KiChainedDispatch2ndLvl at 0
+_KiChainedDispatch2ndLvl at 0:
+
+ /* Not yet supported */
+ int 3
+.endfunc
+
+.func KiChainedDispatch at 0
+_KiChainedDispatch at 0:
+
+ /* Increase interrupt count */
+ inc dword ptr [fs:KPCR_PRCB_INTERRUPT_COUNT]
+
+ /* Save trap frame */
+ mov ebp, esp
+
+ /* Save vector and IRQL */
+ mov eax, [edi+KINTERRUPT_VECTOR]
+ mov ecx, [edi+KINTERRUPT_IRQL]
+
+ /* Save old irql */
+ push eax
+ sub esp, 4
+
+ /* Begin interrupt */
+ push eax
+ push ecx
+ call _HalBeginSystemInterrupt at 12
+
+ /* Check if it was handled */
+ or eax, eax
+ jz SpuriousInt
+ sub esp, 12
+
+ /* Call the 2nd-level handler */
+ call _KiChainedDispatch2ndLvl at 0
+
+ /* Exit the interrupt */
+ mov esi, $
+ cli
+ call _HalEndSystemInterrupt at 8
+ jmp _Kei386EoiHelper at 0
+.endfunc
+
+.func KiInterruptDispatch3 at 0
+_KiInterruptDispatch3 at 0:
+
+ /* Increase interrupt count */
+ inc dword ptr [fs:KPCR_PRCB_INTERRUPT_COUNT]
+
+ /* Save trap frame */
+ mov ebp, esp
+
+ /* Save vector and IRQL */
+ mov eax, [edi+KINTERRUPT_VECTOR]
+ mov ecx, [edi+KINTERRUPT_SYNCHRONIZE_IRQL]
+
+ /* Save old irql */
+ push eax
+ sub esp, 4
+ push esp
+
+ /* Begin interrupt */
+ push eax
+ push ecx
+ call _HalBeginSystemInterrupt at 12
+
+ /* Check if it was handled */
+ or eax, eax
+ jz SpuriousInt
+ sub esp, 12
+
+ /* Acquire the lock */
+GetIntLock:
+ mov esi, [edi+KINTERRUPT_ACTUAL_LOCK]
+ ACQUIRE_SPINLOCK(esi, IntSpin)
+
+ /* Call the ISR */
+ mov eax, [edi+KINTERRUPT_SERVICE_CONTEXT]
+ push eax
+ push edi
+ call [edi+KINTERRUPT_SERVICE_ROUTINE]
+
+ /* Release the lock */
+ RELEASE_SPINLOCK(esi)
+
+ /* Clean up the stack */
+ add esp, 12
+
+ /* Exit the interrupt */
+ mov esi, $
+ cli
+ call _HalEndSystemInterrupt at 8
+ jmp _Kei386EoiHelper at 0
+
+SpuriousInt:
+ /* Exit the interrupt */
+ add esp, 8
+ mov esi, $
+ jmp _Kei386EoiHelper at 0
+
+#ifdef CONFIG_SMP
+IntSpin:
+ SPIN_ON_LOCK esi, GetIntLock
+#endif
+.endfunc
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