[ros-arm-bringup] 32659: - Convert all Loader Block structures to virtual addresses (By adding KSEG0_BASE) since the kernel eventually unmaps the page table responsible for the physical->virtual identity mapping, but we'll still need to access the loader block. - Implement proper trap prolog/epilog code -- currently used and tested in the data abort handler. Currently hacked away some KTRAP_FRAME stuff on ARM. - The data abort handler has a very rudimentary check to detect page faults and will c
11 Mar
2008
11 Mar
'08
4:13 p.m.
Author: ros-arm-bringup
Date: Tue Mar 11 11:13:43 2008
New Revision: 32659
URL: http://svn.reactos.org/svn/reactos?rev=3D32659&view=3Drev
Log:
- Convert all Loader Block structures to virtual addresses (By adding KSEG0=
_BASE) since the kernel eventually unmaps the page table responsible for th=
e physical->virtual identity mapping, but we'll still need to access the lo=
ader block.
- Implement proper trap prolog/epilog code -- currently used and tested in =
the data abort handler. Currently hacked away some KTRAP_FRAME stuff on ARM.
- The data abort handler has a very rudimentary check to detect page faults=
and will call MmAccessFaults, this means we now support paged pool!
- We now succesfully go past MmInitSystem and go all the way until ObInitSy=
stem (still in Phase 0).
Modified:
trunk/reactos/boot/freeldr/freeldr/arch/arm/loader.c
trunk/reactos/include/ndk/arm/ketypes.h
trunk/reactos/ntoskrnl/include/internal/arm/intrin_i.h
trunk/reactos/ntoskrnl/include/internal/arm/ksarm.h
trunk/reactos/ntoskrnl/ke/arm/trap.s
trunk/reactos/ntoskrnl/ke/arm/trapc.c
Modified: trunk/reactos/boot/freeldr/freeldr/arch/arm/loader.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/boot/freeldr/freeldr/=
arch/arm/loader.c?rev=3D32659&r1=3D32658&r2=3D32659&view=3Ddiff
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D
--- trunk/reactos/boot/freeldr/freeldr/arch/arm/loader.c (original)
+++ trunk/reactos/boot/freeldr/freeldr/arch/arm/loader.c Tue Mar 11 11:13:4=
3 2008
@@ -30,6 +30,7 @@
CHAR ArmArcHalPath[64];
CHAR ArmNtHalPath[64];
CHAR ArmNtBootPath[64];
+WCHAR ArmModuleName[64];
PNLS_DATA_BLOCK ArmNlsDataBlock;
PLOADER_PARAMETER_EXTENSION ArmExtension;
BIOS_MEMORY_DESCRIPTOR ArmBoardMemoryDescriptors[16] =3D {{0}};
@@ -1042,7 +1043,7 @@
//
// Jump to Kernel
//
- (*KernelEntryPoint)(Magic, (PVOID)ArmLoaderBlock);
+ (*KernelEntryPoint)(Magic, (PVOID)((ULONG_PTR)ArmLoaderBlock | KSEG0_B=
ASE));
}
=
VOID
@@ -1054,6 +1055,7 @@
NTSTATUS Status;
ULONG Dummy, i;
PLDR_DATA_TABLE_ENTRY LdrEntry;
+ PLIST_ENTRY NextEntry, OldEntry;
=
//
// Allocate the ARM Shared Heap
@@ -1080,7 +1082,7 @@
//
// Setup the extension and setup block
//
- ArmLoaderBlock->Extension =3D ArmExtension;
+ ArmLoaderBlock->Extension =3D (PVOID)((ULONG_PTR)ArmExtension | KSEG0_=
BASE);
ArmLoaderBlock->SetupLdrBlock =3D NULL;
=
//
@@ -1223,6 +1225,7 @@
//
// Setup loader entry for the kernel
//
+ wcscpy(ArmModuleName, L"ntoskrnl.exe");
LdrEntry =3D ArmAllocateFromSharedHeap(sizeof(LDR_DATA_TABLE_ENTRY));
RtlZeroMemory(LdrEntry, sizeof(LDR_DATA_TABLE_ENTRY));
LdrEntry->DllBase =3D (PVOID)KernelBase;
@@ -1230,6 +1233,10 @@
LdrEntry->EntryPoint =3D KernelEntryPoint;
LdrEntry->LoadCount =3D 1;
LdrEntry->Flags =3D LDRP_IMAGE_DLL | LDRP_ENTRY_PROCESSED;
+ RtlInitUnicodeString(&LdrEntry->FullDllName, ArmModuleName);
+ RtlInitUnicodeString(&LdrEntry->BaseDllName, ArmModuleName);
+ LdrEntry->FullDllName.Buffer =3D (PVOID)((ULONG_PTR)LdrEntry->FullDllN=
ame.Buffer | KSEG0_BASE);
+ LdrEntry->BaseDllName.Buffer =3D (PVOID)((ULONG_PTR)LdrEntry->BaseDllN=
ame.Buffer | KSEG0_BASE);
InsertTailList(&ArmLoaderBlock->LoadOrderListHead,
&LdrEntry->InLoadOr=
derLinks);
=
//
@@ -1253,6 +1260,36 @@
if (Status !=3D STATUS_SUCCESS) return;
}
=
+ =
+ //
+ // Loop driver list
+ // =
+ NextEntry =3D ArmLoaderBlock->LoadOrderListHead.Flink;
+ while (NextEntry !=3D &ArmLoaderBlock->LoadOrderListHead)
+ {
+ //
+ // Remember the physical entry
+ //
+ OldEntry =3D NextEntry->Flink;
+ =
+ //
+ // Edit the data
+ //
+ NextEntry->Flink =3D (PVOID)((ULONG_PTR)NextEntry->Flink | KSEG0_B=
ASE);
+ NextEntry->Blink =3D (PVOID)((ULONG_PTR)NextEntry->Blink | KSEG0_B=
ASE);
+ =
+ //
+ // Keep looping
+ //
+ NextEntry =3D OldEntry;
+ }
+
+ //
+ // Now edit the root itself
+ //
+ NextEntry->Flink =3D (PVOID)((ULONG_PTR)NextEntry->Flink | KSEG0_BASE);
+ NextEntry->Blink =3D (PVOID)((ULONG_PTR)NextEntry->Blink | KSEG0_BASE);
+ =
//
// Setup extension parameters
//
@@ -1276,7 +1313,7 @@
// Set the ARC Boot Path
//
strncpy(ArmArcBootPath, ArmCommandLine, 63);
- ArmLoaderBlock->ArcBootDeviceName =3D ArmArcBootPath;
+ ArmLoaderBlock->ArcBootDeviceName =3D (PVOID)((ULONG_PTR)ArmArcBootPat=
h | KSEG0_BASE);
=
//
// The rest of the string is the NT path
@@ -1286,22 +1323,31 @@
ArmNtBootPath[0] =3D '\\';
strncat(ArmNtBootPath, BootPath + 1, 63);
strcat(ArmNtBootPath,"\\");
- ArmLoaderBlock->NtBootPathName =3D ArmNtBootPath;
+ ArmLoaderBlock->NtBootPathName =3D (PVOID)((ULONG_PTR)ArmNtBootPath | =
KSEG0_BASE);
=
//
// Set the HAL paths
//
strncpy(ArmArcHalPath, ArmArcBootPath, 63);
- ArmLoaderBlock->ArcHalDeviceName =3D ArmArcHalPath;
+ ArmLoaderBlock->ArcHalDeviceName =3D (PVOID)((ULONG_PTR)ArmArcHalPath =
| KSEG0_BASE);
strcpy(ArmNtHalPath, "\\");
- ArmLoaderBlock->NtHalPathName =3D ArmNtHalPath;
- =
- /* Use this new command line */
+ ArmLoaderBlock->NtHalPathName =3D (PVOID)((ULONG_PTR)ArmNtHalPath | KS=
EG0_BASE);
+ =
+ //
+ // Use this new command line
+ //
strncpy(ArmLoaderBlock->LoadOptions, HalPath + 2, 255);
=
- /* Parse it and change every slash to a space */
+ //
+ // Parse it and change every slash to a space
+ //
BootPath =3D ArmLoaderBlock->LoadOptions;
do {if (*BootPath =3D=3D '/') *BootPath =3D ' ';} while
(*BootPath++);
+
+ //
+ // Fixup command-line pointer
+ //
+ ArmLoaderBlock->LoadOptions =3D (PVOID)((ULONG_PTR)ArmLoaderBlock->Loa=
dOptions | KSEG0_BASE);
=
//
// Setup cache information
@@ -1412,6 +1458,35 @@
ArmLoaderBlock->Prcb =3D KSEG0_BASE | (ULONG)Base;
ArmLoaderBlock->Process =3D ArmLoaderBlock->Prcb + sizeof(KPRCB);
ArmLoaderBlock->Thread =3D ArmLoaderBlock->Process + sizeof(EPROCESS);
+ =
+ //
+ // Loop memory list
+ // =
+ NextEntry =3D ArmLoaderBlock->MemoryDescriptorListHead.Flink;
+ while (NextEntry !=3D &ArmLoaderBlock->MemoryDescriptorListHead)
+ {
+ //
+ // Remember the physical entry
+ //
+ OldEntry =3D NextEntry->Flink;
+ =
+ //
+ // Edit the data
+ //
+ NextEntry->Flink =3D (PVOID)((ULONG_PTR)NextEntry->Flink | KSEG0_B=
ASE);
+ NextEntry->Blink =3D (PVOID)((ULONG_PTR)NextEntry->Blink | KSEG0_B=
ASE);
+ =
+ //
+ // Keep looping
+ //
+ NextEntry =3D OldEntry;
+ }
+ =
+ //
+ // Now edit the root itself
+ //
+ NextEntry->Flink =3D (PVOID)((ULONG_PTR)NextEntry->Flink | KSEG0_BASE);
+ NextEntry->Blink =3D (PVOID)((ULONG_PTR)NextEntry->Blink | KSEG0_BASE);
}
=
VOID
Modified: trunk/reactos/include/ndk/arm/ketypes.h
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/include/ndk/arm/ketyp=
es.h?rev=3D32659&r1=3D32658&r2=3D32659&view=3Ddiff
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D
--- trunk/reactos/include/ndk/arm/ketypes.h (original)
+++ trunk/reactos/include/ndk/arm/ketypes.h Tue Mar 11 11:13:43 2008
@@ -59,6 +59,7 @@
//
typedef struct _KTRAP_FRAME
{
+ ULONG Spsr;
ULONG R0;
ULONG R1;
ULONG R2;
@@ -72,17 +73,17 @@
ULONG R10;
ULONG R11;
ULONG R12;
- ULONG Sp;
- ULONG Lr;
+ ULONG UserSp;
+ ULONG UserLr;
+ ULONG SvcSp;
+ ULONG SvcLr;
ULONG Pc;
- ULONG Psr; =
- UCHAR ExceptionRecord[(sizeof(EXCEPTION_RECORD) + 7) & (~7)];
- UCHAR OldIrql;
- UCHAR PreviousMode;
- ULONG Fpscr;
- ULONG FpExc;
- ULONG S[33];
- ULONG FpExtra[8];
+// UCHAR OldIrql;
+// UCHAR PreviousMode;
+// ULONG Fpscr;
+// ULONG FpExc;
+// ULONG S[33];
+// ULONG FpExtra[8];
} KTRAP_FRAME, *PKTRAP_FRAME;
=
#ifndef NTOS_MODE_USER
Modified: trunk/reactos/ntoskrnl/include/internal/arm/intrin_i.h
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/include/inte=
rnal/arm/intrin_i.h?rev=3D32659&r1=3D32658&r2=3D32659&view=3Ddiff
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D
--- trunk/reactos/ntoskrnl/include/internal/arm/intrin_i.h (original)
+++ trunk/reactos/ntoskrnl/include/internal/arm/intrin_i.h Tue Mar 11 11:13=
:43 2008
@@ -26,6 +26,24 @@
{
ARM_ID_CODE_REGISTER Value;
__asm__ __volatile__ ("mrc p15, 0, %0, c0, c0, 0" :
"=3Dr"(Value.AsUlo=
ng) : : "cc");
+ return Value;
+}
+
+FORCEINLINE
+ULONG
+KeArmFaultStatusRegisterGet(VOID)
+{
+ ULONG Value;
+ __asm__ __volatile__ ("mrc p15, 0, %0, c5, c0, 0" : "=3Dr"(Value)
: : =
"cc");
+ return Value;
+}
+
+FORCEINLINE
+ULONG
+KeArmFaultAddressRegisterGet(VOID)
+{
+ ULONG Value;
+ __asm__ __volatile__ ("mrc p15, 0, %0, c6, c0, 0" : "=3Dr"(Value)
: : =
"cc");
return Value;
}
=
Modified: trunk/reactos/ntoskrnl/include/internal/arm/ksarm.h
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/include/inte=
rnal/arm/ksarm.h?rev=3D32659&r1=3D32658&r2=3D32659&view=3Ddiff
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D
--- trunk/reactos/ntoskrnl/include/internal/arm/ksarm.h (original)
+++ trunk/reactos/ntoskrnl/include/internal/arm/ksarm.h Tue Mar 11 11:13:43=
2008
@@ -9,6 +9,7 @@
.equ CPSR_SVC_MODE, 0x13
.equ CPSR_ABORT_MODE, 0x17
.equ CPSR_UND_MODE, 0x1B
+.equ CPSR_MODES, 0x1F
=
=
/*
Modified: trunk/reactos/ntoskrnl/ke/arm/trap.s
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/ke/arm/trap.=
s?rev=3D32659&r1=3D32658&r2=3D32659&view=3Ddiff
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D
--- trunk/reactos/ntoskrnl/ke/arm/trap.s (original)
+++ trunk/reactos/ntoskrnl/ke/arm/trap.s Tue Mar 11 11:13:43 2008
@@ -62,32 +62,107 @@
=
NESTED_ENTRY KiDataAbortException
PROLOG_END KiDataAbortException
-
- //
- // Save space for trap frame
- //
- sub sp, #TrapFrameLength
=
//
- // Build the register part of the trap frame
+ // Fixup lr
//
- stm sp, {r0-r15}
+ sub lr, lr, #8
+ =
+ //
+ // Save the bottom 4 registers
+ //
+ stmdb sp, {r0-r3}
+ =
+ //
+ // Save the abort lr, sp, spsr, cpsr
+ //
+ mov r0, lr
+ mov r1, sp
+ mrs r2, cpsr
+ mrs r3, spsr
+ =
+ //
+ // Switch to SVC mode
+ //
+ bic r2, r2, #CPSR_MODES
+ orr r2, r2, #CPSR_SVC_MODE
+ msr cpsr_c, r2
+ =
+ //
+ // Save the SVC sp before we modify it
+ //
+ mov r2, sp
+ =
+ //
+ // Save the abort lr
+ //
+ str r0, [sp, #-4]!
+ =
+ //
+ // Save the SVC lr and sp
+ //
+ str lr, [sp, #-4]!
+ str r2, [sp, #-4]!
+ =
+ //
+ // Restore the saved SPSR
+ //
+ msr spsr_all, r3
+ =
+ //
+ // Restore our 4 registers
+ //
+ ldmdb r1, {r0-r3}
+ =
+ //
+ // Make space for the trap frame
+ //
+ sub sp, sp, #(4*15) // TrapFrameLength
+ =
+ //
+ // Save user-mode registers
+ //
+ stmia sp, {r0-r12}
+ add r0, sp, #(4*13)
+ stmia r0, {r13-r14}^
+ =
+ //
+ // Save SPSR
+ //
+ mrs r0, spsr_all
+ str r0, [sp, #-4]!
=
- //
- // TOOD: We'll worry about the rest later...
- //
- =
//
// Call the C handler
//
- mov a1, sp
- b KiDataAbortHandler
+ adr lr, AbortExit
+ mov r0, sp
+ ldr pc, =3DKiDataAbortHandler
+
+AbortExit:
=
//
- // Restore state
+ // Get the SPSR and restore it
//
+ ldr r0, [sp], #4
+ msr spsr_all, r0
+ =
+ //
+ // Restore the registers
+ //
+ ldmia sp, {r0-r14}^
+ mov r0, r0
+ =
+ //
+ // Advance in the trap frame
+ //
+ add sp, sp, #(4*15)
+ =
+ //
+ // Restore program execution state
+ //
+ ldmia sp, {sp, lr, pc}^
b .
- =
ENTRY_END KiDataAbortException
=
NESTED_ENTRY KiInterruptException
Modified: trunk/reactos/ntoskrnl/ke/arm/trapc.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/ke/arm/trapc=
.c?rev=3D32659&r1=3D32658&r2=3D32659&view=3Ddiff
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D
--- trunk/reactos/ntoskrnl/ke/arm/trapc.c (original)
+++ trunk/reactos/ntoskrnl/ke/arm/trapc.c Tue Mar 11 11:13:43 2008
@@ -19,7 +19,23 @@
NTSTATUS
KiDataAbortHandler(IN PKTRAP_FRAME TrapFrame)
{
- DPRINT1("Data Abort (%p) @ %p\n", TrapFrame, TrapFrame->Lr - 8);
+ NTSTATUS Status;
+ PVOID Address =3D (PVOID)KeArmFaultAddressRegisterGet();
+ DPRINT1("Data Abort (%x) @ %p %p\n", Address, TrapFrame->SvcLr, TrapFr=
ame->Pc);
+ DPRINT1("Abort Reason: %d\n", KeArmFaultStatusRegisterGet());
+ =
+ //
+ // Check if this is a page fault
+ //
+ if (KeArmFaultStatusRegisterGet() =3D=3D 21)
+ {
+ Status =3D MmAccessFault(FALSE,
+ Address,
+ KernelMode,
+ TrapFrame);
+ DPRINT1("Status: %x\n", Status);
+ if (Status =3D=3D STATUS_SUCCESS) return Status;
+ }
=
while (TRUE);
return STATUS_SUCCESS;
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