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[FREELDR] Add 64 bit alignment macros (ULONGLONG_ALIGN_UP/DOWN_BY) for aligning physical addresses that can be larger than 4GB and the default macros truncate to ULONG_PTR.

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CORE-12881

Signed-off-by: Timo Kreuzer <timo.kreuzer@reactos.org>
This commit is contained in:
Serge Gautherie 2017-10-03 09:16:26 +02:00 committed by Timo Kreuzer
parent f588de2e79
commit 274ace05b2
1 changed files with 15 additions and 6 deletions
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21
boot/freeldr/freeldr/arch/i386/pcmem.c
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@ -27,6 +27,12 @@
DBG_DEFAULT_CHANNEL(MEMORY);
#define ULONGLONG_ALIGN_DOWN_BY(size, align) \
((ULONGLONG)(size) & ~((ULONGLONG)(align) - 1))
#define ULONGLONG_ALIGN_UP_BY(size, align) \
(ULONGLONG_ALIGN_DOWN_BY(((ULONGLONG)(size) + align - 1), align))
#define MAX_BIOS_DESCRIPTORS 80
BIOS_MEMORY_MAP PcBiosMemoryMap[MAX_BIOS_DESCRIPTORS];
@ -295,13 +301,14 @@ PcMemGetBiosMemoryMap(PFREELDR_MEMORY_DESCRIPTOR MemoryMap, ULONG MaxMemoryMapSi
MemoryType = LoaderFree;
/* Align up base of memory range */
RealBaseAddress = ALIGN_UP_BY(PcBiosMemoryMap[PcBiosMapCount].BaseAddress,
PAGE_SIZE);
RealBaseAddress = ULONGLONG_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);
EndAddress = ULONGLONG_ALIGN_DOWN_BY(EndAddress, PAGE_SIZE);
/* Check if there is anything left */
if (EndAddress <= RealBaseAddress)
@ -325,13 +332,14 @@ PcMemGetBiosMemoryMap(PFREELDR_MEMORY_DESCRIPTOR MemoryMap, ULONG MaxMemoryMapSi
MemoryType = LoaderSpecialMemory;
/* Align down base of memory area */
RealBaseAddress = ALIGN_DOWN_BY(PcBiosMemoryMap[PcBiosMapCount].BaseAddress,
PAGE_SIZE);
RealBaseAddress = ULONGLONG_ALIGN_DOWN_BY(
PcBiosMemoryMap[PcBiosMapCount].BaseAddress,
PAGE_SIZE);
/* Calculate the length after aligning the base */
RealSize = PcBiosMemoryMap[PcBiosMapCount].BaseAddress +
PcBiosMemoryMap[PcBiosMapCount].Length - RealBaseAddress;
RealSize = ALIGN_UP_BY(RealSize, PAGE_SIZE);
RealSize = ULONGLONG_ALIGN_UP_BY(RealSize, PAGE_SIZE);
}
/* Check if we can add this descriptor */
@ -359,6 +367,7 @@ PcMemGetBiosMemoryMap(PFREELDR_MEMORY_DESCRIPTOR MemoryMap, ULONG MaxMemoryMapSi
PcBiosMapCount++;
nextRange:
/* If the continuation value is zero,
* then this was the last entry, so we're done. */
if (Regs.x.ebx == 0x00000000)