[tkreuzer] 66087: [FREELDR] Make the DiskReadBuffer location and size dynamic. Should fix a number of issues with non-standard BIOSes. Many thanks to jeditobe for his help with testing/debugging of...
25 Jan
2015
25 Jan
'15
11:24 p.m.
Author: tkreuzer
Date: Sun Jan 25 23:24:27 2015
New Revision: 66087
URL: http://svn.reactos.org/svn/reactos?rev=66087&view=rev
Log:
[FREELDR]
Make the DiskReadBuffer location and size dynamic. Should fix a number of issues with
non-standard BIOSes. Many thanks to jeditobe for his help with testing/debugging of this
issue.
CORE-8899 #resolve
CORE-9031 #resolve
Modified:
trunk/reactos/boot/freeldr/bootsect/fatx.S
trunk/reactos/boot/freeldr/freeldr/arch/i386/hardware.c
trunk/reactos/boot/freeldr/freeldr/arch/i386/hwdisk.c
trunk/reactos/boot/freeldr/freeldr/arch/i386/pcmem.c
trunk/reactos/boot/freeldr/freeldr/arch/i386/xboxhw.c
trunk/reactos/boot/freeldr/freeldr/cache/blocklist.c
trunk/reactos/boot/freeldr/freeldr/disk/partition.c
trunk/reactos/boot/freeldr/freeldr/fs/ext2.c
trunk/reactos/boot/freeldr/freeldr/include/arch/arm/hardware.h
trunk/reactos/boot/freeldr/freeldr/include/arch/pc/machpc.h
trunk/reactos/boot/freeldr/freeldr/include/arch/pc/x86common.h
trunk/reactos/boot/freeldr/freeldr/include/disk.h
trunk/reactos/boot/freeldr/freeldr/include/mm.h
trunk/reactos/boot/freeldr/freeldr/mm/meminit.c
Modified: trunk/reactos/boot/freeldr/bootsect/fatx.S
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/boot/freeldr/bootsect/fatx…
==============================================================================
--- trunk/reactos/boot/freeldr/bootsect/fatx.S [iso-8859-1] (original)
+++ trunk/reactos/boot/freeldr/bootsect/fatx.S [iso-8859-1] Sun Jan 25 23:24:27 2015
@@ -7,6 +7,7 @@
* Timo Kreuzer
*/
+#define DISKREADBUFFER HEX(8E000)
/*
* Layout of a FAT volume:
Modified: trunk/reactos/boot/freeldr/freeldr/arch/i386/hardware.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/boot/freeldr/freeldr/arch/…
==============================================================================
--- trunk/reactos/boot/freeldr/freeldr/arch/i386/hardware.c [iso-8859-1] (original)
+++ trunk/reactos/boot/freeldr/freeldr/arch/i386/hardware.c [iso-8859-1] Sun Jan 25
23:24:27 2015
@@ -307,10 +307,10 @@
{
NodeNumber = (UCHAR)i;
- x = PnpBiosGetDeviceNode(&NodeNumber, (PVOID)DISKREADBUFFER);
+ x = PnpBiosGetDeviceNode(&NodeNumber, DiskReadBuffer);
if (x == 0)
{
- DeviceNode = (PCM_PNP_BIOS_DEVICE_NODE)DISKREADBUFFER;
+ DeviceNode = (PCM_PNP_BIOS_DEVICE_NODE)DiskReadBuffer;
TRACE("Node: %u Size %u (0x%x)\n",
DeviceNode->Node,
Modified: trunk/reactos/boot/freeldr/freeldr/arch/i386/hwdisk.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/boot/freeldr/freeldr/arch/…
==============================================================================
--- trunk/reactos/boot/freeldr/freeldr/arch/i386/hwdisk.c [iso-8859-1] (original)
+++ trunk/reactos/boot/freeldr/freeldr/arch/i386/hwdisk.c [iso-8859-1] Sun Jan 25 23:24:27
2015
@@ -42,6 +42,8 @@
static CHAR Hex[] = "0123456789abcdef";
UCHAR PcBiosDiskCount = 0;
CHAR PcDiskIdentifier[32][20];
+PVOID DiskReadBuffer;
+SIZE_T DiskReadBufferSize;
static ARC_STATUS DiskClose(ULONG FileId)
@@ -119,7 +121,7 @@
ULONGLONG SectorOffset;
TotalSectors = (N + Context->SectorSize - 1) / Context->SectorSize;
- MaxSectors = PcDiskReadBufferSize / Context->SectorSize;
+ MaxSectors = DiskReadBufferSize / Context->SectorSize;
SectorOffset = Context->SectorNumber + Context->SectorOffset;
ret = 1;
@@ -134,7 +136,7 @@
Context->DriveNumber,
SectorOffset,
ReadSectors,
- (PVOID)DISKREADBUFFER);
+ DiskReadBuffer);
if (!ret)
break;
@@ -142,7 +144,7 @@
if (Length > N)
Length = N;
- RtlCopyMemory(Ptr, (PVOID)DISKREADBUFFER, Length);
+ RtlCopyMemory(Ptr, DiskReadBuffer, Length);
Ptr += Length;
N -= Length;
@@ -197,14 +199,14 @@
PCHAR Identifier = PcDiskIdentifier[DriveNumber - 0x80];
/* Read the MBR */
- if (!MachDiskReadLogicalSectors(DriveNumber, 0ULL, 1, (PVOID)DISKREADBUFFER))
+ if (!MachDiskReadLogicalSectors(DriveNumber, 0ULL, 1, DiskReadBuffer))
{
ERR("Reading MBR failed\n");
return;
}
- Buffer = (ULONG*)DISKREADBUFFER;
- Mbr = (PMASTER_BOOT_RECORD)DISKREADBUFFER;
+ Buffer = (ULONG*)DiskReadBuffer;
+ Mbr = (PMASTER_BOOT_RECORD)DiskReadBuffer;
Signature = Mbr->Signature;
TRACE("Signature: %x\n", Signature);
@@ -288,13 +290,13 @@
* harddisks. So, we set the buffer to known contents first, then try to
* read. If the BIOS reports success but the buffer contents haven't
* changed then we fail anyway */
- memset((PVOID) DISKREADBUFFER, 0xcd, 512);
- while (MachDiskReadLogicalSectors(DriveNumber, 0ULL, 1, (PVOID)DISKREADBUFFER))
+ memset(DiskReadBuffer, 0xcd, 512);
+ while (MachDiskReadLogicalSectors(DriveNumber, 0ULL, 1, DiskReadBuffer))
{
Changed = FALSE;
for (i = 0; ! Changed && i < 512; i++)
{
- Changed = ((PUCHAR)DISKREADBUFFER)[i] != 0xcd;
+ Changed = ((PUCHAR)DiskReadBuffer)[i] != 0xcd;
}
if (! Changed)
{
@@ -310,7 +312,7 @@
DiskCount++;
DriveNumber++;
- memset((PVOID) DISKREADBUFFER, 0xcd, 512);
+ memset(DiskReadBuffer, 0xcd, 512);
}
DiskReportError(TRUE);
@@ -326,13 +328,13 @@
ULONG Checksum = 0;
/* Read the MBR */
- if (!MachDiskReadLogicalSectors(FrldrBootDrive, 16ULL, 1,
(PVOID)DISKREADBUFFER))
+ if (!MachDiskReadLogicalSectors(FrldrBootDrive, 16ULL, 1, DiskReadBuffer))
{
ERR("Reading MBR failed\n");
return FALSE;
}
- Buffer = (ULONG*)DISKREADBUFFER;
+ Buffer = (ULONG*)DiskReadBuffer;
/* Calculate the MBR checksum */
for (i = 0; i < 2048 / sizeof(ULONG); i++) Checksum += Buffer[i];
Modified: trunk/reactos/boot/freeldr/freeldr/arch/i386/pcmem.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/boot/freeldr/freeldr/arch/…
==============================================================================
--- trunk/reactos/boot/freeldr/freeldr/arch/i386/pcmem.c [iso-8859-1] (original)
+++ trunk/reactos/boot/freeldr/freeldr/arch/i386/pcmem.c [iso-8859-1] Sun Jan 25 23:24:27
2015
@@ -29,32 +29,11 @@
#define MAX_BIOS_DESCRIPTORS 32
-#define STACK_BASE_PAGE (STACKLOW / PAGE_SIZE)
-#define FREELDR_BASE_PAGE (FREELDR_BASE / PAGE_SIZE)
-#define DISKBUF_BASE_PAGE (DISKREADBUFFER / PAGE_SIZE)
-
-#define STACK_PAGE_COUNT (FREELDR_BASE_PAGE - STACK_BASE_PAGE)
-#define FREELDR_PAGE_COUNT (DISKBUF_BASE_PAGE - FREELDR_BASE_PAGE)
-#define DISKBUF_PAGE_COUNT (0x10)
-#define BIOSBUF_PAGE_COUNT (1)
-
BIOS_MEMORY_MAP PcBiosMemoryMap[MAX_BIOS_DESCRIPTORS];
ULONG PcBiosMapCount;
-ULONG PcDiskReadBufferSize;
-
-FREELDR_MEMORY_DESCRIPTOR PcMemoryMap[MAX_BIOS_DESCRIPTORS + 1] =
-{
- { LoaderFirmwarePermanent, 0x00, 1 }, // realmode int vectors
- { LoaderFirmwareTemporary, 0x01, STACK_BASE_PAGE - 1 }, // freeldr
stack, cmdline, BIOS call buffer
- { LoaderOsloaderStack, STACK_BASE_PAGE, FREELDR_BASE_PAGE - STACK_BASE_PAGE },
// prot mode stack.
- { LoaderLoadedProgram, FREELDR_BASE_PAGE, FREELDR_PAGE_COUNT }, // freeldr
image
- { LoaderFirmwareTemporary, DISKBUF_BASE_PAGE, DISKBUF_PAGE_COUNT }, // Disk read
buffer for int 13h. DISKREADBUFFER
- { LoaderFirmwarePermanent, 0x9F, 0x1 }, // EBDA
- { LoaderFirmwarePermanent, 0xA0, 0x50 }, // ROM / Video
- { LoaderSpecialMemory, 0xF0, 0x10 }, // ROM / Video
- { LoaderSpecialMemory, 0xFFF, 1 }, // unusable memory
- { 0, 0, 0 }, // end of map
-};
+
+FREELDR_MEMORY_DESCRIPTOR PcMemoryMap[MAX_BIOS_DESCRIPTORS + 1];
+ULONG PcMapCount;
ULONG
AddMemoryDescriptor(
@@ -186,38 +165,12 @@
}
static
-ULONG
-PcMemGetBiosMemoryMap(PFREELDR_MEMORY_DESCRIPTOR MemoryMap, ULONG MaxMemoryMapSize)
+BOOLEAN
+GetEbdaLocation(
+ PULONG BaseAddress,
+ PULONG Size)
{
REGS Regs;
- ULONG MapCount = 0;
- ULONGLONG RealBaseAddress, RealSize;
- TYPE_OF_MEMORY MemoryType;
- ULONG Size;
- ASSERT(PcBiosMapCount == 0);
-
- TRACE("GetBiosMemoryMap()\n");
-
- /* Make sure the usable memory is large enough. To do this we check the 16
- bit value at address 0x413 inside the BDA, which gives us the usable size
- in KB */
- Size = (*(PUSHORT)(ULONG_PTR)0x413) * 1024;
- if (Size < DISKREADBUFFER || Size - DISKREADBUFFER < MIN_DISKREADBUFFER_SIZE)
- {
- FrLdrBugCheckWithMessage(
- MEMORY_INIT_FAILURE,
- __FILE__,
- __LINE__,
- "The BIOS reported a usable memory range up to 0x%x, which is too
small!\n\n"
- "If you see this, please report to the ReactOS team!",
- Size);
- }
- PcDiskReadBufferSize = (Size - DISKREADBUFFER) & ~0xfff;
- if (PcDiskReadBufferSize > MAX_DISKREADBUFFER_SIZE)
- {
- PcDiskReadBufferSize = MAX_DISKREADBUFFER_SIZE;
- }
- TRACE("PcDiskReadBufferSize=0x%x\n", PcDiskReadBufferSize);
/* Get the address of the Extended BIOS Data Area (EBDA).
* Int 15h, AH=C1h
@@ -232,36 +185,44 @@
Int386(0x15, &Regs, &Regs);
/* If the function fails, there is no EBDA */
- if (INT386_SUCCESS(Regs))
- {
- /* Check if this is high enough */
- ULONG EbdaBase = (ULONG)Regs.w.es << 4;
- if (EbdaBase < DISKREADBUFFER || EbdaBase - DISKREADBUFFER <
MIN_DISKREADBUFFER_SIZE)
- {
- FrLdrBugCheckWithMessage(
- MEMORY_INIT_FAILURE,
- __FILE__,
- __LINE__,
- "The location of your EBDA is 0x%lx, which is too low!\n\n"
- "If you see this, please report to the ReactOS team!",
- EbdaBase);
- }
- if (((EbdaBase - DISKREADBUFFER) & ~0xfff) < PcDiskReadBufferSize)
- {
- PcDiskReadBufferSize = (EbdaBase - DISKREADBUFFER) & ~0xfff;
- TRACE("After EBDA check, PcDiskReadBufferSize=0x%x\n",
PcDiskReadBufferSize);
- }
-
- /* Calculate the (max) size of the EBDA */
- Size = 0xA0000 - EbdaBase;
-
- /* Add the descriptor */
- MapCount = AddMemoryDescriptor(PcMemoryMap,
- MAX_BIOS_DESCRIPTORS,
- (EbdaBase / MM_PAGE_SIZE),
- (Size / MM_PAGE_SIZE),
- LoaderFirmwarePermanent);
- }
+ if (!INT386_SUCCESS(Regs))
+ {
+ return FALSE;
+ }
+
+ /* Get Base address and (maximum) size */
+ *BaseAddress = (ULONG)Regs.w.es << 4;
+ *Size = 0xA0000 - *BaseAddress;
+ return TRUE;
+}
+
+static
+ULONG
+PcMemGetBiosMemoryMap(PFREELDR_MEMORY_DESCRIPTOR MemoryMap, ULONG MaxMemoryMapSize)
+{
+ REGS Regs;
+ ULONGLONG RealBaseAddress, EndAddress, RealSize;
+ TYPE_OF_MEMORY MemoryType;
+ ULONG Size;
+ ASSERT(PcBiosMapCount == 0);
+
+ TRACE("GetBiosMemoryMap()\n");
+
+ /* Make sure the usable memory is large enough. To do this we check the 16
+ bit value at address 0x413 inside the BDA, which gives us the usable size
+ in KB */
+ Size = (*(PUSHORT)(ULONG_PTR)0x413) * 1024;
+ if (Size < MEMORY_MARGIN)
+ {
+ FrLdrBugCheckWithMessage(
+ MEMORY_INIT_FAILURE,
+ __FILE__,
+ __LINE__,
+ "The BIOS reported a usable memory range up to 0x%x, which is too
small!\n\n"
+ "If you see this, please report to the ReactOS team!",
+ Size);
+ }
+
/* Int 15h AX=E820h
* Newer BIOSes - GET SYSTEM MEMORY MAP
@@ -322,13 +283,24 @@
{
MemoryType = LoaderFree;
- /* Align up base of memory area */
- RealBaseAddress = PcBiosMemoryMap[PcBiosMapCount].BaseAddress &
~(MM_PAGE_SIZE - 1ULL);
-
- /* Calculate the length after aligning the base */
- RealSize = PcBiosMemoryMap[PcBiosMapCount].BaseAddress +
- PcBiosMemoryMap[PcBiosMapCount].Length - RealBaseAddress;
- RealSize = (RealSize + MM_PAGE_SIZE - 1) & ~(MM_PAGE_SIZE - 1ULL);
+ /* Align up base of memory range */
+ RealBaseAddress = ALIGN_UP_BY(PcBiosMemoryMap[PcBiosMapCount].BaseAddress,
+ PAGE_SIZE);
+
+ /* Calculate aligned EndAddress */
+ EndAddress = PcBiosMemoryMap[PcBiosMapCount].BaseAddress +
+ PcBiosMemoryMap[PcBiosMapCount].Length;
+ EndAddress = ALIGN_DOWN_BY(EndAddress, PAGE_SIZE);
+
+ /* Check if there is anything left */
+ if (EndAddress <= RealBaseAddress)
+ {
+ /* This doesn't span any page, so continue with next range */
+ continue;
+ }
+
+ /* Calculate the length of the aligned range */
+ RealSize = EndAddress - RealBaseAddress;
}
else
{
@@ -338,18 +310,20 @@
MemoryType = LoaderSpecialMemory;
/* Align down base of memory area */
- RealBaseAddress = PcBiosMemoryMap[PcBiosMapCount].BaseAddress &
~(MM_PAGE_SIZE - 1ULL);
+ RealBaseAddress = ALIGN_DOWN_BY(PcBiosMemoryMap[PcBiosMapCount].BaseAddress,
+ PAGE_SIZE);
+
/* Calculate the length after aligning the base */
RealSize = PcBiosMemoryMap[PcBiosMapCount].BaseAddress +
PcBiosMemoryMap[PcBiosMapCount].Length - RealBaseAddress;
- RealSize = (RealSize + MM_PAGE_SIZE - 1) & ~(MM_PAGE_SIZE - 1ULL);
+ RealSize = ALIGN_UP_BY(RealSize, PAGE_SIZE);
}
/* Check if we can add this descriptor */
- if ((RealSize >= MM_PAGE_SIZE) && (MapCount < MaxMemoryMapSize))
+ if ((RealSize >= MM_PAGE_SIZE) && (PcMapCount < MaxMemoryMapSize))
{
/* Add the descriptor */
- MapCount = AddMemoryDescriptor(PcMemoryMap,
+ PcMapCount = AddMemoryDescriptor(PcMemoryMap,
MAX_BIOS_DESCRIPTORS,
(PFN_NUMBER)(RealBaseAddress / MM_PAGE_SIZE),
(PFN_NUMBER)(RealSize / MM_PAGE_SIZE),
@@ -366,12 +340,72 @@
TRACE("End Of System Memory Map!\n\n");
break;
}
-
- }
-
- return MapCount;
-}
-
+ }
+
+ TRACE("GetBiosMemoryMap end, PcBiosMapCount = %ld\n", PcBiosMapCount);
+ return PcBiosMapCount;
+}
+
+VOID
+ReserveMemory(
+ ULONG_PTR BaseAddress,
+ SIZE_T Size,
+ TYPE_OF_MEMORY MemoryType,
+ PCHAR Usage)
+{
+ ULONG_PTR BasePage, PageCount;
+ ULONG i;
+
+ BasePage = BaseAddress / PAGE_SIZE;
+ PageCount = ADDRESS_AND_SIZE_TO_SPAN_PAGES(BaseAddress, Size);
+
+ for (i = 0; i < PcMapCount; i++)
+ {
+ /* Check for conflicting descriptor */
+ if ((PcMemoryMap[i].BasePage < BasePage + PageCount) &&
+ (PcMemoryMap[i].BasePage + PcMemoryMap[i].PageCount > BasePage))
+ {
+ /* Check if the memory is free */
+ if (PcMemoryMap[i].MemoryType != LoaderFree)
+ {
+ FrLdrBugCheckWithMessage(
+ MEMORY_INIT_FAILURE,
+ __FILE__,
+ __LINE__,
+ "Failed to reserve memory in the range 0x%Ix - 0x%Ix for
%s",
+ BaseAddress,
+ Size,
+ Usage);
+ }
+ }
+ }
+
+ /* Add the memory descriptor */
+ PcMapCount = AddMemoryDescriptor(PcMemoryMap,
+ MAX_BIOS_DESCRIPTORS,
+ BasePage,
+ PageCount,
+ MemoryType);
+}
+
+VOID
+SetMemory(
+ ULONG_PTR BaseAddress,
+ SIZE_T Size,
+ TYPE_OF_MEMORY MemoryType)
+{
+ ULONG_PTR BasePage, PageCount;
+
+ BasePage = BaseAddress / PAGE_SIZE;
+ PageCount = ADDRESS_AND_SIZE_TO_SPAN_PAGES(BaseAddress, Size);
+
+ /* Add the memory descriptor */
+ PcMapCount = AddMemoryDescriptor(PcMemoryMap,
+ MAX_BIOS_DESCRIPTORS,
+ BasePage,
+ PageCount,
+ MemoryType);
+}
PFREELDR_MEMORY_DESCRIPTOR
PcMemGetMemoryMap(ULONG *MemoryMapSize)
@@ -379,13 +413,16 @@
ULONG i, EntryCount;
ULONG ExtendedMemorySizeAtOneMB;
ULONG ExtendedMemorySizeAtSixteenMB;
+ ULONG EbdaBase, EbdaSize;
+ TRACE("PcMemGetMemoryMap()\n");
EntryCount = PcMemGetBiosMemoryMap(PcMemoryMap, MAX_BIOS_DESCRIPTORS);
/* If the BIOS didn't provide a memory map, synthesize one */
- if (0 == EntryCount)
- {
- GetExtendedMemoryConfiguration(&ExtendedMemorySizeAtOneMB,
&ExtendedMemorySizeAtSixteenMB);
+ if (EntryCount == 0)
+ {
+ GetExtendedMemoryConfiguration(&ExtendedMemorySizeAtOneMB,
+ &ExtendedMemorySizeAtSixteenMB);
/* Conventional memory */
AddMemoryDescriptor(PcMemoryMap,
@@ -395,7 +432,7 @@
LoaderFree);
/* Extended memory */
- EntryCount = AddMemoryDescriptor(PcMemoryMap,
+ PcMapCount = AddMemoryDescriptor(PcMemoryMap,
MAX_BIOS_DESCRIPTORS,
1024 * 1024 / PAGE_SIZE,
ExtendedMemorySizeAtOneMB * 1024 / PAGE_SIZE,
@@ -404,16 +441,65 @@
if (ExtendedMemorySizeAtSixteenMB != 0)
{
/* Extended memory at 16MB */
- EntryCount = AddMemoryDescriptor(PcMemoryMap,
+ PcMapCount = AddMemoryDescriptor(PcMemoryMap,
MAX_BIOS_DESCRIPTORS,
0x1000000 / PAGE_SIZE,
ExtendedMemorySizeAtSixteenMB * 64 * 1024 /
PAGE_SIZE,
LoaderFree);
}
- }
+
+ /* Check if we have an EBDA and get it's location */
+ if (GetEbdaLocation(&EbdaBase, &EbdaSize))
+ {
+ /* Add the descriptor */
+ PcMapCount = AddMemoryDescriptor(PcMemoryMap,
+ MAX_BIOS_DESCRIPTORS,
+ (EbdaBase / PAGE_SIZE),
+ ADDRESS_AND_SIZE_TO_SPAN_PAGES(EbdaBase,
EbdaSize),
+ LoaderFirmwarePermanent);
+ }
+ }
+
+ /* Setup some protected ranges */
+ SetMemory(0x000000, 0x01000, LoaderFirmwarePermanent); // Realmode IVT / BDA
+ SetMemory(0x0A0000, 0x50000, LoaderFirmwarePermanent); // Video memory
+ SetMemory(0x0F0000, 0x10000, LoaderSpecialMemory); // ROM
+ SetMemory(0xFFF000, 0x01000, LoaderSpecialMemory); // unusable memory (do we really
need this?)
+
+ /* Reserve some static ranges for freeldr */
+ ReserveMemory(0x1000, STACKLOW - 0x1000, LoaderFirmwareTemporary, "BIOS
area");
+ ReserveMemory(STACKLOW, STACKADDR - STACKLOW, LoaderOsloaderStack, "FreeLdr
stack");
+ ReserveMemory(FREELDR_BASE, FrLdrImageSize, LoaderLoadedProgram, "FreeLdr
image");
+
+ /* Default to 1 page above freeldr for the disk read buffer */
+ DiskReadBuffer = (PUCHAR)ALIGN_UP_BY(FREELDR_BASE + FrLdrImageSize, PAGE_SIZE);
+ DiskReadBufferSize = PAGE_SIZE;
+
+ /* Scan for free range above freeldr image */
+ for (i = 0; i < PcMapCount; i++)
+ {
+ if ((PcMemoryMap[i].BasePage > (FREELDR_BASE / PAGE_SIZE)) &&
+ (PcMemoryMap[i].MemoryType == LoaderFree))
+ {
+ /* Use this range for the disk read buffer */
+ DiskReadBuffer = (PVOID)(PcMemoryMap[i].BasePage * PAGE_SIZE);
+ DiskReadBufferSize = min(PcMemoryMap[i].PageCount * PAGE_SIZE,
+ MAX_DISKREADBUFFER_SIZE);
+ break;
+ }
+ }
+
+ TRACE("DiskReadBuffer=%p, DiskReadBufferSize=%lx\n",
+ DiskReadBuffer, DiskReadBufferSize);
+
+ /* Now reserve the range for the disk read buffer */
+ ReserveMemory((ULONG_PTR)DiskReadBuffer,
+ DiskReadBufferSize,
+ LoaderFirmwareTemporary,
+ "Disk read buffer");
TRACE("Dumping resulting memory map:\n");
- for (i = 0; i < EntryCount; i++)
+ for (i = 0; i < PcMapCount; i++)
{
TRACE("BasePage=0x%lx, PageCount=0x%lx, Type=%s\n",
PcMemoryMap[i].BasePage,
@@ -421,9 +507,9 @@
MmGetSystemMemoryMapTypeString(PcMemoryMap[i].MemoryType));
}
- *MemoryMapSize = EntryCount;
-
+ *MemoryMapSize = PcMapCount;
return PcMemoryMap;
}
+
/* EOF */
Modified: trunk/reactos/boot/freeldr/freeldr/arch/i386/xboxhw.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/boot/freeldr/freeldr/arch/…
==============================================================================
--- trunk/reactos/boot/freeldr/freeldr/arch/i386/xboxhw.c [iso-8859-1] (original)
+++ trunk/reactos/boot/freeldr/freeldr/arch/i386/xboxhw.c [iso-8859-1] Sun Jan 25 23:24:27
2015
@@ -198,17 +198,17 @@
while (N > 0)
{
Length = N;
- if (Length > PcDiskReadBufferSize)
- Length = PcDiskReadBufferSize;
+ if (Length > DiskReadBufferSize)
+ Length = DiskReadBufferSize;
Sectors = (Length + Context->SectorSize - 1) / Context->SectorSize;
ret = MachDiskReadLogicalSectors(
Context->DriveNumber,
Context->SectorNumber + Context->SectorOffset + i,
Sectors,
- (PVOID)DISKREADBUFFER);
+ DiskReadBuffer);
if (!ret)
return EIO;
- RtlCopyMemory(Ptr, (PVOID)DISKREADBUFFER, Length);
+ RtlCopyMemory(Ptr, DiskReadBuffer, Length);
Ptr += Length;
*Count += Length;
N -= Length;
@@ -257,14 +257,14 @@
PARTITION_TABLE_ENTRY PartitionTableEntry;
/* Read the MBR */
- if (!MachDiskReadLogicalSectors(DriveNumber, 0ULL, 1, (PVOID)DISKREADBUFFER))
+ if (!MachDiskReadLogicalSectors(DriveNumber, 0ULL, 1, DiskReadBuffer))
{
ERR("Reading MBR failed\n");
return;
}
- Buffer = (ULONG*)DISKREADBUFFER;
- Mbr = (PMASTER_BOOT_RECORD)DISKREADBUFFER;
+ Buffer = (ULONG*)DiskReadBuffer;
+ Mbr = (PMASTER_BOOT_RECORD)DiskReadBuffer;
Signature = Mbr->Signature;
TRACE("Signature: %x\n", Signature);
@@ -351,13 +351,13 @@
* harddisks. So, we set the buffer to known contents first, then try to
* read. If the BIOS reports success but the buffer contents haven't
* changed then we fail anyway */
- memset((PVOID) DISKREADBUFFER, 0xcd, PcDiskReadBufferSize);
- while (MachDiskReadLogicalSectors(0x80 + DiskCount, 0ULL, 1, (PVOID)DISKREADBUFFER))
+ memset(DiskReadBuffer, 0xcd, DiskReadBufferSize);
+ while (MachDiskReadLogicalSectors(0x80 + DiskCount, 0ULL, 1, DiskReadBuffer))
{
Changed = FALSE;
- for (i = 0; ! Changed && i < PcDiskReadBufferSize; i++)
+ for (i = 0; ! Changed && i < DiskReadBufferSize; i++)
{
- Changed = ((PUCHAR)DISKREADBUFFER)[i] != 0xcd;
+ Changed = ((PUCHAR)DiskReadBuffer)[i] != 0xcd;
}
if (! Changed)
{
@@ -366,7 +366,7 @@
break;
}
DiskCount++;
- memset((PVOID) DISKREADBUFFER, 0xcd, PcDiskReadBufferSize);
+ memset(DiskReadBuffer, 0xcd, DiskReadBufferSize);
}
DiskReportError(TRUE);
TRACE("BIOS reports %d harddisk%s\n",
Modified: trunk/reactos/boot/freeldr/freeldr/cache/blocklist.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/boot/freeldr/freeldr/cache…
==============================================================================
--- trunk/reactos/boot/freeldr/freeldr/cache/blocklist.c [iso-8859-1] (original)
+++ trunk/reactos/boot/freeldr/freeldr/cache/blocklist.c [iso-8859-1] Sun Jan 25 23:24:27
2015
@@ -119,13 +119,13 @@
}
// Now try to read in the block
- if (!MachDiskReadLogicalSectors(CacheDrive->DriveNumber, (BlockNumber *
CacheDrive->BlockSize), CacheDrive->BlockSize, (PVOID)DISKREADBUFFER))
+ if (!MachDiskReadLogicalSectors(CacheDrive->DriveNumber, (BlockNumber *
CacheDrive->BlockSize), CacheDrive->BlockSize, DiskReadBuffer))
{
FrLdrTempFree(CacheBlock->BlockData, TAG_CACHE_DATA);
FrLdrTempFree(CacheBlock, TAG_CACHE_BLOCK);
return NULL;
}
- RtlCopyMemory(CacheBlock->BlockData, (PVOID)DISKREADBUFFER,
CacheDrive->BlockSize * CacheDrive->BytesPerSector);
+ RtlCopyMemory(CacheBlock->BlockData, DiskReadBuffer, CacheDrive->BlockSize *
CacheDrive->BytesPerSector);
// Add it to our list of blocks managed by the cache
InsertTailList(&CacheDrive->CacheBlockHead, &CacheBlock->ListEntry);
Modified: trunk/reactos/boot/freeldr/freeldr/disk/partition.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/boot/freeldr/freeldr/disk/…
==============================================================================
--- trunk/reactos/boot/freeldr/freeldr/disk/partition.c [iso-8859-1] (original)
+++ trunk/reactos/boot/freeldr/freeldr/disk/partition.c [iso-8859-1] Sun Jan 25 23:24:27
2015
@@ -202,11 +202,11 @@
ULONG Index;
// Read master boot record
- if (!MachDiskReadLogicalSectors(DriveNumber, LogicalSectorNumber, 1,
(PVOID)DISKREADBUFFER))
- {
- return FALSE;
- }
- RtlCopyMemory(BootRecord, (PVOID)DISKREADBUFFER, sizeof(MASTER_BOOT_RECORD));
+ if (!MachDiskReadLogicalSectors(DriveNumber, LogicalSectorNumber, 1,
DiskReadBuffer))
+ {
+ return FALSE;
+ }
+ RtlCopyMemory(BootRecord, DiskReadBuffer, sizeof(MASTER_BOOT_RECORD));
TRACE("Dumping partition table for drive 0x%x:\n", DriveNumber);
Modified: trunk/reactos/boot/freeldr/freeldr/fs/ext2.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/boot/freeldr/freeldr/fs/ex…
==============================================================================
--- trunk/reactos/boot/freeldr/freeldr/fs/ext2.c [iso-8859-1] (original)
+++ trunk/reactos/boot/freeldr/freeldr/fs/ext2.c [iso-8859-1] Sun Jan 25 23:24:27 2015
@@ -569,8 +569,8 @@
//{
// return FALSE;
//}
- //ReturnValue = MachDiskReadLogicalSectors(DriveNumber, SectorNumber +
Ext2VolumeStartSector, SectorCount, (PVOID)DISKREADBUFFER);
- //RtlCopyMemory(Buffer, (PVOID)DISKREADBUFFER, SectorCount *
DiskGeometry.BytesPerSector);
+ //ReturnValue = MachDiskReadLogicalSectors(DriveNumber, SectorNumber +
Ext2VolumeStartSector, SectorCount, DiskReadBuffer);
+ //RtlCopyMemory(Buffer, DiskReadBuffer, SectorCount * DiskGeometry.BytesPerSector);
//return ReturnValue;
return CacheReadDiskSectors(DriveNumber, SectorNumber + Ext2VolumeStartSector,
SectorCount, Buffer);
@@ -607,11 +607,11 @@
// Now try to read the super block
// If this fails then abort
- if (!MachDiskReadLogicalSectors(Ext2DriveNumber, Ext2VolumeStartSector, 8,
(PVOID)DISKREADBUFFER))
- {
- return FALSE;
- }
- RtlCopyMemory(Ext2SuperBlock, (PVOID)((ULONG_PTR)DISKREADBUFFER + 1024), 1024);
+ if (!MachDiskReadLogicalSectors(Ext2DriveNumber, Ext2VolumeStartSector, 8,
DiskReadBuffer))
+ {
+ return FALSE;
+ }
+ RtlCopyMemory(Ext2SuperBlock, ((PUCHAR)DiskReadBuffer + 1024), 1024);
TRACE("Dumping super block:\n");
TRACE("total_inodes: %d\n", Ext2SuperBlock->total_inodes);
Modified: trunk/reactos/boot/freeldr/freeldr/include/arch/arm/hardware.h
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/boot/freeldr/freeldr/inclu…
==============================================================================
--- trunk/reactos/boot/freeldr/freeldr/include/arch/arm/hardware.h [iso-8859-1]
(original)
+++ trunk/reactos/boot/freeldr/freeldr/include/arch/arm/hardware.h [iso-8859-1] Sun Jan 25
23:24:27 2015
@@ -35,4 +35,4 @@
extern ULONG SecondLevelIcacheFillSize;
extern ULONG gDiskReadBuffer, gFileSysBuffer;
-#define DISKREADBUFFER gDiskReadBuffer
+#define DiskReadBuffer gDiskReadBuffer
Modified: trunk/reactos/boot/freeldr/freeldr/include/arch/pc/machpc.h
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/boot/freeldr/freeldr/inclu…
==============================================================================
--- trunk/reactos/boot/freeldr/freeldr/include/arch/pc/machpc.h [iso-8859-1] (original)
+++ trunk/reactos/boot/freeldr/freeldr/include/arch/pc/machpc.h [iso-8859-1] Sun Jan 25
23:24:27 2015
@@ -63,6 +63,5 @@
extern BIOS_MEMORY_MAP PcBiosMemoryMap[];
extern ULONG PcBiosMapCount;
-extern ULONG PcDiskReadBufferSize;
/* EOF */
Modified: trunk/reactos/boot/freeldr/freeldr/include/arch/pc/x86common.h
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/boot/freeldr/freeldr/inclu…
==============================================================================
--- trunk/reactos/boot/freeldr/freeldr/include/arch/pc/x86common.h [iso-8859-1]
(original)
+++ trunk/reactos/boot/freeldr/freeldr/include/arch/pc/x86common.h [iso-8859-1] Sun Jan 25
23:24:27 2015
@@ -4,11 +4,11 @@
#endif
/* Memory layout */
-//#ifdef _M_AMD64
+#ifdef _M_AMD64
#define PML4_ADDRESS HEX(1000) /* One page PML4 page table */
#define PDP_ADDRESS HEX(2000) /* One page PDP page table */
#define PD_ADDRESS HEX(3000) /* One page PD page table */
-//#endif
+#endif
#define BIOSCALLBUFFER HEX(4000) /* Buffer to store temporary data for any Int386()
call */
#define STACK16ADDR HEX(6F00) /* The 16-bit stack top will be at 0000:6F00 */
#define BSS_START HEX(6F00)
@@ -16,15 +16,13 @@
#define STACKADDR HEX(F000) /* The 32/64-bit stack top will be at 0000:F000, or
0xF000 */
#define FREELDR_BASE HEX(F800)
#define FREELDR_PE_BASE HEX(10000)
-#define DISKREADBUFFER HEX(8E000) /* Buffer to store data read in from the disk via
the BIOS */
-/* 9F000- 9FFFF is reserved for the EBDA */
+#define MEMORY_MARGIN HEX(90000) /* We need this much memory */
#define BIOSCALLBUFSEGMENT (BIOSCALLBUFFER/16) /* Buffer to store temporary data for any
Int386() call */
#define BIOSCALLBUFOFFSET HEX(0000) /* Buffer to store temporary data for any Int386()
call */
#define BIOSCALLBUFSIZE PAGE_SIZE /* max is sizeof(VESA_SVGA_INFO) = 512 */
-#define MAX_FREELDR_PE_SIZE (DISKREADBUFFER - FREELDR_PE_BASE)
-#define MIN_DISKREADBUFFER_SIZE HEX(1000)
-#define MAX_DISKREADBUFFER_SIZE HEX(C000)
+#define MAX_FREELDR_PE_SIZE (MEMORY_MARGIN - FREELDR_PE_BASE - PAGE_SIZE)
+#define MAX_DISKREADBUFFER_SIZE HEX(10000)
/* These addresses specify the realmode "BSS section" layout */
#define BSS_RealModeEntry (BSS_START + 0)
Modified: trunk/reactos/boot/freeldr/freeldr/include/disk.h
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/boot/freeldr/freeldr/inclu…
==============================================================================
--- trunk/reactos/boot/freeldr/freeldr/include/disk.h [iso-8859-1] (original)
+++ trunk/reactos/boot/freeldr/freeldr/include/disk.h [iso-8859-1] Sun Jan 25 23:24:27
2015
@@ -125,6 +125,8 @@
VOID DiskStopFloppyMotor(VOID); // Implemented in i386disk.c
extern UCHAR FrldrBootDrive;
extern ULONG FrldrBootPartition;
+extern PVOID DiskReadBuffer;
+extern SIZE_T DiskReadBufferSize;
BOOLEAN DiskGetBootPath(char *BootPath, unsigned Size);
Modified: trunk/reactos/boot/freeldr/freeldr/include/mm.h
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/boot/freeldr/freeldr/inclu…
==============================================================================
--- trunk/reactos/boot/freeldr/freeldr/include/mm.h [iso-8859-1] (original)
+++ trunk/reactos/boot/freeldr/freeldr/include/mm.h [iso-8859-1] Sun Jan 25 23:24:27 2015
@@ -123,6 +123,7 @@
extern PVOID FrLdrDefaultHeap;
extern PVOID FrLdrTempHeap;
+extern SIZE_T FrLdrImageSize;
PVOID
FrLdrHeapCreate(
Modified: trunk/reactos/boot/freeldr/freeldr/mm/meminit.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/boot/freeldr/freeldr/mm/me…
==============================================================================
--- trunk/reactos/boot/freeldr/freeldr/mm/meminit.c [iso-8859-1] (original)
+++ trunk/reactos/boot/freeldr/freeldr/mm/meminit.c [iso-8859-1] Sun Jan 25 23:24:27 2015
@@ -23,6 +23,17 @@
DBG_DEFAULT_CHANNEL(MEMORY);
+PVOID PageLookupTableAddress = NULL;
+PFN_NUMBER TotalPagesInLookupTable = 0;
+PFN_NUMBER FreePagesInLookupTable = 0;
+PFN_NUMBER LastFreePageHint = 0;
+PFN_NUMBER MmLowestPhysicalPage = 0xFFFFFFFF;
+PFN_NUMBER MmHighestPhysicalPage = 0;
+
+PFREELDR_MEMORY_DESCRIPTOR BiosMemoryMap;
+ULONG BiosMemoryMapEntryCount;
+SIZE_T FrLdrImageSize;
+
#if DBG
typedef struct
{
@@ -50,17 +61,42 @@
{ LoaderReserve, "Reserve" },
};
ULONG MemoryTypeCount = sizeof(MemoryTypeArray) / sizeof(MemoryTypeArray[0]);
+
+PCSTR
+MmGetSystemMemoryMapTypeString(
+ TYPE_OF_MEMORY Type)
+{
+ ULONG Index;
+
+ for (Index = 1; Index < MemoryTypeCount; Index++)
+ {
+ if (MemoryTypeArray[Index].Type == Type)
+ {
+ return MemoryTypeArray[Index].TypeString;
+ }
+ }
+
+ return MemoryTypeArray[0].TypeString;
+}
+
+VOID
+DbgDumpMemoryMap(
+ PFREELDR_MEMORY_DESCRIPTOR List)
+{
+ ULONG i;
+
+ DbgPrint("Dumping Memory map:\n");
+ for (i = 0; List[i].PageCount != 0; i++)
+ {
+ DbgPrint("%02d %08x - %08x: %s\n",
+ i,
+ List[i].BasePage * PAGE_SIZE,
+ (List[i].BasePage + List[i].PageCount) * PAGE_SIZE,
+ MmGetSystemMemoryMapTypeString(List[i].MemoryType));
+ }
+ DbgPrint("\n");
+}
#endif
-
-PVOID PageLookupTableAddress = NULL;
-PFN_NUMBER TotalPagesInLookupTable = 0;
-PFN_NUMBER FreePagesInLookupTable = 0;
-PFN_NUMBER LastFreePageHint = 0;
-PFN_NUMBER MmLowestPhysicalPage = 0xFFFFFFFF;
-PFN_NUMBER MmHighestPhysicalPage = 0;
-
-PFREELDR_MEMORY_DESCRIPTOR BiosMemoryMap;
-ULONG BiosMemoryMapEntryCount;
ULONG
AddMemoryDescriptor(
@@ -70,78 +106,117 @@
IN PFN_NUMBER PageCount,
IN TYPE_OF_MEMORY MemoryType)
{
- ULONG i, c;
- PFN_NUMBER NextBase;
- TRACE("AddMemoryDescriptor(0x%lx-0x%lx [0x%lx pages])\n",
- BasePage, BasePage + PageCount, PageCount);
-
- /* Scan through all existing descriptors */
- for (i = 0, c = 0; (c < MaxCount) && (List[c].PageCount != 0); c++)
- {
- /* Count entries completely below the new range */
- if (List[i].BasePage + List[i].PageCount <= BasePage) i++;
- }
-
- /* Check if the list is full */
- if (c >= MaxCount) return c;
-
- /* Is there an existing descriptor starting before the new range */
- while ((i < c) && (List[i].BasePage <= BasePage))
- {
- /* The end of the existing one is the minimum for the new range */
- NextBase = List[i].BasePage + List[i].PageCount;
-
- /* Bail out, if everything is trimmed away */
- if ((BasePage + PageCount) <= NextBase) return c;
-
- /* Trim the naew range at the lower end */
- PageCount -= (NextBase - BasePage);
- BasePage = NextBase;
-
- /* Go to the next entry and repeat */
- i++;
- }
-
- ASSERT(PageCount > 0);
-
- /* Are there still entries above? */
- if (i < c)
- {
- /* Shift the following entries one up */
- RtlMoveMemory(&List[i+1], &List[i], (c - i) * sizeof(List[0]));
-
- /* Insert the new range */
- List[i].BasePage = BasePage;
- List[i].PageCount = min(PageCount, List[i+1].BasePage - BasePage);
- List[i].MemoryType = MemoryType;
- c++;
-
- TRACE("Inserting at i=%ld: (0x%lx:0x%lx)\n",
- i, List[i].BasePage, List[i].PageCount);
-
- /* Check if the range was trimmed */
- if (PageCount > List[i].PageCount)
- {
- /* Recursively process the trimmed part */
- c = AddMemoryDescriptor(List,
- MaxCount,
- BasePage + List[i].PageCount,
- PageCount - List[i].PageCount,
- MemoryType);
- }
- }
- else
- {
- /* We can simply add the range here */
- TRACE("Adding i=%ld: (0x%lx:0x%lx)\n", i, BasePage, PageCount);
- List[i].BasePage = BasePage;
- List[i].PageCount = PageCount;
- List[i].MemoryType = MemoryType;
- c++;
- }
-
- /* Return the new count */
- return c;
+ ULONG Index, DescriptCount;
+ PFN_NUMBER EndPage;
+ TRACE("AddMemoryDescriptor(0x%Ix, 0x%Ix, %u)\n",
+ BasePage, PageCount, MemoryType);
+
+ EndPage = BasePage + PageCount;
+
+ /* Skip over all descriptor below the new range */
+ Index = 0;
+ while ((List[Index].PageCount != 0) &&
+ ((List[Index].BasePage + List[Index].PageCount) <= BasePage))
+ {
+ Index++;
+ }
+
+ /* Count the descriptors */
+ DescriptCount = Index;
+ while (List[DescriptCount].PageCount != 0)
+ {
+ DescriptCount++;
+ }
+
+ /* Check if the existing range conflicts with the new range */
+ while ((List[Index].PageCount != 0) &&
+ (List[Index].BasePage < EndPage))
+ {
+ TRACE("AddMemoryDescriptor conflict @%lu: new=[%lx:%lx],
existing=[%lx,%lx]\n",
+ Index, BasePage, PageCount, List[Index].BasePage, List[Index].PageCount);
+
+ /*
+ * We have 4 overlapping cases:
+ *
+ * Case (a) (b) (c) (d)
+ * Existing range |---| |-----| |---| |---|
+ * New range |---| |---| |-----| |---|
+ *
+ */
+
+ /* Check if the existing range starts before the new range (a)/(b) */
+ if (List[Index].BasePage < BasePage)
+ {
+ /* Check if the existing range extends beyond the new range (b) */
+ if (List[Index].BasePage + List[Index].PageCount > EndPage)
+ {
+ /* Split the descriptor */
+ RtlMoveMemory(&List[Index + 1],
+ &List[Index],
+ (DescriptCount - Index) * sizeof(List[0]));
+ List[Index + 1].BasePage = EndPage;
+ List[Index + 1].PageCount = List[Index].BasePage +
+ List[Index].PageCount -
+ List[Index + 1].BasePage;
+ List[Index].PageCount = BasePage - List[Index].BasePage;
+ Index++;
+ DescriptCount++;
+ break;
+ }
+ else
+ {
+ /* Crop the existing range and continue with the next range */
+ List[Index].PageCount = BasePage - List[Index].BasePage;
+ Index++;
+ }
+ }
+ /* Check if the existing range is fully covered by the new range (c) */
+ else if ((List[Index].BasePage + List[Index].PageCount) <=
+ EndPage)
+ {
+ /* Delete this descriptor */
+ RtlMoveMemory(&List[Index],
+ &List[Index + 1],
+ (DescriptCount - Index) * sizeof(List[0]));
+ DescriptCount--;
+ }
+ /* Otherwise the existing range ends after the new range (d) */
+ else
+ {
+ /* Crop the existing range at the start and bail out */
+ List[Index].PageCount -= EndPage - List[Index].BasePage;
+ List[Index].BasePage = EndPage;
+ break;
+ }
+ }
+
+ /* Make sure we can still add a new descriptor */
+ if (DescriptCount >= MaxCount)
+ {
+ FrLdrBugCheckWithMessage(
+ MEMORY_INIT_FAILURE,
+ __FILE__,
+ __LINE__,
+ "Ran out of static memory descriptors!");
+ }
+
+ /* Insert the new descriptor */
+ if (Index < DescriptCount)
+ {
+ RtlMoveMemory(&List[Index + 1],
+ &List[Index],
+ (DescriptCount - Index) * sizeof(List[0]));
+ }
+
+ List[Index].BasePage = BasePage;
+ List[Index].PageCount = PageCount;
+ List[Index].MemoryType = MemoryType;
+ DescriptCount++;
+
+#ifdef DBG
+ DbgDumpMemoryMap(List);
+#endif
+ return DescriptCount;
}
const FREELDR_MEMORY_DESCRIPTOR*
@@ -230,6 +305,9 @@
OptionalHeader->SizeOfImage, MAX_FREELDR_PE_SIZE,
OptionalHeader->SectionAlignment, OptionalHeader->FileAlignment);
}
+
+ /* Calculate the full image size */
+ FrLdrImageSize = (ULONG_PTR)&__ImageBase + OptionalHeader->SizeOfImage -
FREELDR_BASE;
}
BOOLEAN MmInitializeMemoryManager(VOID)
@@ -287,22 +365,6 @@
return TRUE;
}
-#if DBG
-PCSTR MmGetSystemMemoryMapTypeString(TYPE_OF_MEMORY Type)
-{
- ULONG Index;
-
- for (Index=1; Index<MemoryTypeCount; Index++)
- {
- if (MemoryTypeArray[Index].Type == Type)
- {
- return MemoryTypeArray[Index].TypeString;
- }
- }
-
- return MemoryTypeArray[0].TypeString;
-}
-#endif
PFN_NUMBER MmGetPageNumberFromAddress(PVOID Address)
{
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tkreuzer＠svn.reactos.org