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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
class PageEntry
{
UInt32 m_uPageEntry;
static UInt32 const MAX_METHOD_INDEX = 0x7FFFFFFF; // reserve one bit for a flag
static UInt32 const MAX_METHOD_INDEX_SMALLENTRIES = 0x7FFF; // reserve one bit for a flag
static UInt32 const METHOD_INDEX_SHIFT_AMOUNT = 1; // shift by one for flag
static UInt32 const METHOD_STARTS_ON_PREV_PAGE_FLAG = 0x00000001; // used in page list entries
public:
PageEntry(UInt32 uPageEntry);
bool IsCoveredByOneMethod();
UInt32 GetMethodIndex();
};
#ifndef RHDUMP
struct ModuleHeader;
typedef DPTR(ModuleHeader) PTR_ModuleHeader;
#endif // RHDUMP
class SectionMethodList
{
UInt32 m_uFlags;
PTR_UInt8 m_pbPageList;
PTR_UInt8 m_pbMethodList;
PTR_UInt8 m_pbGCInfoList;
PTR_UInt8 m_pbGCInfoBlob;
PTR_UInt8 m_pbEHInfoList;
PTR_UInt8 m_pbEHInfoBlob;
#ifdef _DEBUG
UInt32 m_uPageListCountDEBUG;
UInt32 m_uMethodListCountDEBUG;
#endif // _DEBUG
PageEntry GetPageListEntry(UInt32 idx);
UInt32 GetMethodPageOffset(UInt32 idxMethod);
UInt32 SectionOffsetToPageNumber(UInt32 uSectionOffset);
UInt32 SectionOffsetToPageOffset(UInt32 uSectionOffset);
// A subset of these flags match those that come from the module header, written by the binder. This set must be kept
// in sync with the definitions in ModuleHeader::ModuleHeaderFlags
enum SectionMethodListFlags
{
SmallPageListEntriesFlag = 0x00000001, // if set, 2-byte page list entries, 4-byte otherwise
SmallGCInfoListEntriesFlag = 0x00000002, // if set, 2-byte gc info list entries, 4-byte otherwise
SmallEHInfoListEntriesFlag = 0x00000004, // if set, 2-byte EH info list entries, 4-byte otherwise
};
static UInt32 const SECTION_METHOD_LIST_PAGE_SIZE = 1024;
static UInt32 const METHOD_ALIGNMENT_IN_BYTES = 4;
public:
SectionMethodList();
#ifndef RHDUMP
bool Init(ModuleHeader * pHdr);
#endif // RHDUMP
bool Init(UInt32 uFlags, UInt32 numMethods, UInt8 * pbCodeMapInfo, UInt8 * pbEHInfo);
void GetMethodInfo(UInt32 uSectionOffset, UInt32 * puMethodIndex,
UInt32 * puMethodStartSectionOffset, UInt32 * puMethodSize);
UInt32 GetGCInfoOffset(UInt32 uMethodIndex);
PTR_UInt8 GetGCInfo(UInt32 uMethodIndex);
PTR_VOID GetEHInfo(UInt32 uMethodIndex);
PTR_UInt8 GetDeltaShortcutTablePtr();
#ifdef _DEBUG
UInt32 GetNumMethodsDEBUG();
#endif // _DEBUG
};
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