68 lines
1.6 KiB
C
68 lines
1.6 KiB
C
/*
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* Interactive disassembler (IDA).
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* Copyright (c) 1990-2020 Hex-Rays
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* ALL RIGHTS RESERVED.
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*
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* EXE-file header layout
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*
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*/
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#ifndef __EXEHDR_H
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#define __EXEHDR_H
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#pragma pack(push, 1)
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struct exehdr
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{
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uint16 exe_ident;
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#define EXE_ID 0x5A4D // 'MZ'
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#define EXE_ID2 0x4D5A // 'ZM' (DOS works with this also)
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uint16 PartPag;
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uint16 PageCnt;
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uint16 ReloCnt;
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uint16 HdrSize;
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uint16 MinMem;
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uint16 MaxMem;
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uint16 ReloSS;
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uint16 ExeSP;
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uint16 ChkSum;
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uint16 ExeIP;
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uint16 ReloCS;
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uint16 TablOff;
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uint16 Overlay;
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/*
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uint16 res[4]; // Reserved words
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uint16 oemid; // OEM identifier (for e_oeminfo)
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uint16 oeminfo; // OEM information; e_oemid specific
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uint16 res2[10]; // Reserved words
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uint32 lfanew; // File address of new exe header
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*/
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int32 CalcEXE_Length(void)
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{
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int32 len = PageCnt * 512L - HdrSize * 16;
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if ( PartPag != 0 )
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len -= 512 - PartPag;
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return len;
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}
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void CalcEXE_Pages(int32 len)
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{
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PartPag = uint16(len % 512);
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PageCnt = uint16(len / 512);
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if ( PartPag != 0 )
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PageCnt++;
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}
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};
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struct exehdr_full: exehdr
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{
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uint16 res[4]; // Reserved words
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uint16 oemid; // OEM identifier (for e_oeminfo)
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uint16 oeminfo; // OEM information; e_oemid specific
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uint16 res2[10]; // Reserved words
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uint32 lfanew; // File address of new exe header
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};
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#define PSPsize 0x100
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#define PE_PTROFF 0x3C
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#pragma pack(pop)
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#endif
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