gpacache.h

Go to the documentation of this file.

/*
 * Copyright (c) 2020 Bitdefender
 * SPDX-License-Identifier: Apache-2.0
 */
#ifndef _GPACACHE_H_
#define _GPACACHE_H_

#include "introtypes.h"


typedef struct _GPA_CACHE_ENTRY
{
    QWORD       Gpa;        
    void        *Hva;       
    DWORD       HitCount;   
    DWORD       UseCount;   
    BOOLEAN     Valid;      
} GPA_CACHE_ENTRY, *PGPA_CACHE_ENTRY;


typedef struct _GPA_CACHE_LINE
{
    GPA_CACHE_ENTRY     *Entries;   
} GPA_CACHE_LINE, *PGPA_CACHE_LINE;


typedef struct _GPA_CACHE_VICTIM
{
    LIST_ENTRY          Link;       
    GPA_CACHE_ENTRY     Entry;      
} GPA_CACHE_VICTIM, *PGPA_CACHE_VICTIM;


typedef struct _GPA_CACHE
{
    DWORD               LinesCount; 
    DWORD               EntriesCount; 

    GPA_CACHE_LINE      *Lines;     

    LIST_ENTRY          Victims;    
} GPA_CACHE, *PGPA_CACHE;


void
IntGpaCacheDump(
    _In_ PGPA_CACHE Cache
    );

INTSTATUS
IntGpaCacheInit(
    _Inout_ PGPA_CACHE *Cache,
    _In_ DWORD LinesCount,
    _In_ DWORD EntriesCount
    );

INTSTATUS
IntGpaCacheUnInit(
    _In_ PGPA_CACHE *Cache
    );

INTSTATUS
IntGpaCacheRelease(
    _In_ PGPA_CACHE Cache,
    _In_ QWORD Gpa
    );

INTSTATUS
IntGpaCacheFindAndAdd(
    _In_ PGPA_CACHE Cache,
    _In_ QWORD Gpa,
    _Out_ void **Hva
    );

INTSTATUS
IntGpaCacheFetchAndAdd(
    _In_ PGPA_CACHE Cache,
    _In_ QWORD Gpa,
    _In_ DWORD Size,
    _Out_ PBYTE Buffer
    );

INTSTATUS
IntGpaCachePatchAndAdd(
    _In_ PGPA_CACHE Cache,
    _In_ QWORD Gpa,
    _In_ DWORD Size,
    _In_ PBYTE Buffer
    );

INTSTATUS
IntGpaCacheFlush(
    _In_ PGPA_CACHE Cache
    );

#endif // _GPACACHE_H_