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-rw-r--r--CryptoPkg/Library/BaseCryptLib/SysCall/RuntimeMemAllocation.c101
1 files changed, 54 insertions, 47 deletions
diff --git a/CryptoPkg/Library/BaseCryptLib/SysCall/RuntimeMemAllocation.c b/CryptoPkg/Library/BaseCryptLib/SysCall/RuntimeMemAllocation.c
index 3e12a0500a..0d2ca604ea 100644
--- a/CryptoPkg/Library/BaseCryptLib/SysCall/RuntimeMemAllocation.c
+++ b/CryptoPkg/Library/BaseCryptLib/SysCall/RuntimeMemAllocation.c
@@ -13,42 +13,42 @@ SPDX-License-Identifier: BSD-2-Clause-Patent
#include <Library/MemoryAllocationLib.h>
#include <Guid/EventGroup.h>
-//----------------------------------------------------------------
+// ----------------------------------------------------------------
// Initial version. Needs further optimizations.
-//----------------------------------------------------------------
+// ----------------------------------------------------------------
//
// Definitions for Runtime Memory Operations
//
-#define RT_PAGE_SIZE 0x200
-#define RT_PAGE_MASK 0x1FF
-#define RT_PAGE_SHIFT 9
+#define RT_PAGE_SIZE 0x200
+#define RT_PAGE_MASK 0x1FF
+#define RT_PAGE_SHIFT 9
-#define RT_SIZE_TO_PAGES(a) (((a) >> RT_PAGE_SHIFT) + (((a) & RT_PAGE_MASK) ? 1 : 0))
-#define RT_PAGES_TO_SIZE(a) ((a) << RT_PAGE_SHIFT)
+#define RT_SIZE_TO_PAGES(a) (((a) >> RT_PAGE_SHIFT) + (((a) & RT_PAGE_MASK) ? 1 : 0))
+#define RT_PAGES_TO_SIZE(a) ((a) << RT_PAGE_SHIFT)
//
// Page Flag Definitions
//
-#define RT_PAGE_FREE 0x00000000
-#define RT_PAGE_USED 0x00000001
+#define RT_PAGE_FREE 0x00000000
+#define RT_PAGE_USED 0x00000001
-#define MIN_REQUIRED_BLOCKS 600
+#define MIN_REQUIRED_BLOCKS 600
//
// Memory Page Table
//
typedef struct {
- UINTN StartPageOffset; // Offset of the starting page allocated.
+ UINTN StartPageOffset; // Offset of the starting page allocated.
// Only available for USED pages.
- UINT32 PageFlag; // Page Attributes.
+ UINT32 PageFlag; // Page Attributes.
} RT_MEMORY_PAGE_ENTRY;
typedef struct {
- UINTN PageCount;
- UINTN LastEmptyPageOffset;
- UINT8 *DataAreaBase; // Pointer to data Area.
- RT_MEMORY_PAGE_ENTRY Pages[1]; // Page Table Entries.
+ UINTN PageCount;
+ UINTN LastEmptyPageOffset;
+ UINT8 *DataAreaBase; // Pointer to data Area.
+ RT_MEMORY_PAGE_ENTRY Pages[1]; // Page Table Entries.
} RT_MEMORY_PAGE_TABLE;
//
@@ -59,8 +59,7 @@ RT_MEMORY_PAGE_TABLE *mRTPageTable = NULL;
//
// Event for Runtime Address Conversion.
//
-STATIC EFI_EVENT mVirtualAddressChangeEvent;
-
+STATIC EFI_EVENT mVirtualAddressChangeEvent;
/**
Initializes pre-allocated memory pointed by ScratchBuffer for subsequent
@@ -114,7 +113,6 @@ InitializeScratchMemory (
return EFI_SUCCESS;
}
-
/**
Look-up Free memory Region for object allocation.
@@ -182,6 +180,7 @@ LookupFreeMemRegion (
//
return (UINTN)(-1);
}
+
for (Index = 0; Index < (StartPageIndex - ReqPages); ) {
//
// Check Consecutive ReqPages Pages.
@@ -203,7 +202,8 @@ LookupFreeMemRegion (
// Failed! Skip current adjacent Used pages
//
while ((SubIndex < (StartPageIndex - ReqPages)) &&
- ((mRTPageTable->Pages[SubIndex + Index].PageFlag & RT_PAGE_USED) != 0)) {
+ ((mRTPageTable->Pages[SubIndex + Index].PageFlag & RT_PAGE_USED) != 0))
+ {
SubIndex++;
}
@@ -216,7 +216,6 @@ LookupFreeMemRegion (
return (UINTN)(-1);
}
-
/**
Allocates a buffer at runtime phase.
@@ -274,7 +273,6 @@ RuntimeAllocateMem (
return AllocPtr;
}
-
/**
Frees a buffer that was previously allocated at runtime phase.
@@ -290,19 +288,20 @@ RuntimeFreeMem (
UINTN StartPageIndex;
StartOffset = (UINTN)Buffer - (UINTN)mRTPageTable->DataAreaBase;
- StartPageIndex = RT_SIZE_TO_PAGES (mRTPageTable->Pages[RT_SIZE_TO_PAGES(StartOffset)].StartPageOffset);
+ StartPageIndex = RT_SIZE_TO_PAGES (mRTPageTable->Pages[RT_SIZE_TO_PAGES (StartOffset)].StartPageOffset);
while (StartPageIndex < mRTPageTable->PageCount) {
if (((mRTPageTable->Pages[StartPageIndex].PageFlag & RT_PAGE_USED) != 0) &&
- (mRTPageTable->Pages[StartPageIndex].StartPageOffset == StartOffset)) {
- //
- // Free this page
- //
- mRTPageTable->Pages[StartPageIndex].PageFlag &= ~RT_PAGE_USED;
- mRTPageTable->Pages[StartPageIndex].PageFlag |= RT_PAGE_FREE;
- mRTPageTable->Pages[StartPageIndex].StartPageOffset = 0;
-
- StartPageIndex++;
+ (mRTPageTable->Pages[StartPageIndex].StartPageOffset == StartOffset))
+ {
+ //
+ // Free this page
+ //
+ mRTPageTable->Pages[StartPageIndex].PageFlag &= ~RT_PAGE_USED;
+ mRTPageTable->Pages[StartPageIndex].PageFlag |= RT_PAGE_FREE;
+ mRTPageTable->Pages[StartPageIndex].StartPageOffset = 0;
+
+ StartPageIndex++;
} else {
break;
}
@@ -311,7 +310,6 @@ RuntimeFreeMem (
return;
}
-
/**
Notification function of EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE.
@@ -325,18 +323,17 @@ RuntimeFreeMem (
VOID
EFIAPI
RuntimeCryptLibAddressChangeEvent (
- IN EFI_EVENT Event,
- IN VOID *Context
+ IN EFI_EVENT Event,
+ IN VOID *Context
)
{
//
// Converts a pointer for runtime memory management to a new virtual address.
//
- EfiConvertPointer (0x0, (VOID **) &mRTPageTable->DataAreaBase);
- EfiConvertPointer (0x0, (VOID **) &mRTPageTable);
+ EfiConvertPointer (0x0, (VOID **)&mRTPageTable->DataAreaBase);
+ EfiConvertPointer (0x0, (VOID **)&mRTPageTable);
}
-
/**
Constructor routine for runtime crypt library instance.
@@ -384,19 +381,25 @@ RuntimeCryptLibConstructor (
return Status;
}
-
//
// -- Memory-Allocation Routines Wrapper for UEFI-OpenSSL Library --
//
/* Allocates memory blocks */
-void *malloc (size_t size)
+void *
+malloc (
+ size_t size
+ )
{
- return RuntimeAllocateMem ((UINTN) size);
+ return RuntimeAllocateMem ((UINTN)size);
}
/* Reallocate memory blocks */
-void *realloc (void *ptr, size_t size)
+void *
+realloc (
+ void *ptr,
+ size_t size
+ )
{
VOID *NewPtr;
UINTN StartOffset;
@@ -415,9 +418,10 @@ void *realloc (void *ptr, size_t size)
PageCount = 0;
while (StartPageIndex < mRTPageTable->PageCount) {
if (((mRTPageTable->Pages[StartPageIndex].PageFlag & RT_PAGE_USED) != 0) &&
- (mRTPageTable->Pages[StartPageIndex].StartPageOffset == StartOffset)) {
- StartPageIndex++;
- PageCount++;
+ (mRTPageTable->Pages[StartPageIndex].StartPageOffset == StartOffset))
+ {
+ StartPageIndex++;
+ PageCount++;
} else {
break;
}
@@ -430,7 +434,7 @@ void *realloc (void *ptr, size_t size)
return ptr;
}
- NewPtr = RuntimeAllocateMem ((UINTN) size);
+ NewPtr = RuntimeAllocateMem ((UINTN)size);
if (NewPtr == NULL) {
return NULL;
}
@@ -443,7 +447,10 @@ void *realloc (void *ptr, size_t size)
}
/* Deallocates or frees a memory block */
-void free (void *ptr)
+void
+free (
+ void *ptr
+ )
{
//
// In Standard C, free() handles a null pointer argument transparently. This
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-19 09:05:57 +0000