summaryrefslogtreecommitdiffstats
path: root/src/PEImage.h
blob: a2009aa0be88c54fffcece4c9461e26e52897fa9 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
// Convert DMD CodeView debug information to PDB files

// Copyright (c) 2009-2010 by Rainer Schuetze, All Rights Reserved

//

// License for redistribution is given by the Artistic License 2.0

// see file LICENSE for further details


#ifndef __PEIMAGE_H__

#define __PEIMAGE_H__


#include "LastError.h"


#include <windows.h>


struct OMFDirHeader;
struct OMFDirEntry;

#define IMGHDR(x) (hdr32 ? hdr32->x : hdr64->x)


class PEImage : public LastError
{
public:
	PEImage(const char* iname = 0);
	~PEImage();

	template<class P> P* DP(int off) const
	{
		return (P*) ((char*) dump_base + off); 
	}
	template<class P> P* DPV(int off, int size) const
	{ 
		if(off < 0 || off + size > dump_total_len)
			return 0;
		return (P*) ((char*) dump_base + off); 
	}
	template<class P> P* DPV(int off) const
	{
		return DPV<P>(off, sizeof(P));
	}
	template<class P> P* CVP(int off) const
	{
		return DPV<P>(cv_base + off, sizeof(P));
	}

	template<class P> P* RVA(unsigned long rva, int len)
	{
		IMAGE_DOS_HEADER *dos = DPV<IMAGE_DOS_HEADER> (0);
		IMAGE_NT_HEADERS32* hdr = DPV<IMAGE_NT_HEADERS32> (dos->e_lfanew);
		IMAGE_SECTION_HEADER* sec = IMAGE_FIRST_SECTION(hdr);

		for (int i = 0; i < hdr->FileHeader.NumberOfSections; i++)
		{
			if (rva       >= sec[i].VirtualAddress &&
				rva + len <= sec[i].VirtualAddress + sec[i].SizeOfRawData)
				return DPV<P>(sec[i].PointerToRawData + rva - sec[i].VirtualAddress, len);
		}
		return 0;
	}

	bool load(const char* iname);
	bool save(const char* oname);

	bool replaceDebugSection (const void* data, int datalen, bool initCV);
	bool initCVPtr(bool initDbgDir);
	bool initDWARFPtr(bool initDbgDir);

	bool hasDWARF() const { return debug_line != 0; }
	bool isX64() const { return hdr64 != 0; }

	int countCVEntries() const;
	OMFDirEntry* getCVEntry(int i) const;

	int getCVSize() const { return dbgDir->SizeOfData; }

	// utilities

	static void* alloc_aligned(unsigned int size, unsigned int align, unsigned int alignoff = 0);
	static void free_aligned(void* p);

	int countSections() const { return IMGHDR(FileHeader.NumberOfSections); }
	int findSection(unsigned int off) const;
	int findSymbol(const char* name, unsigned long& off) const;
	const IMAGE_SECTION_HEADER& getSection(int s) const { return sec[s]; }
	unsigned long long getImageBase() const { return IMGHDR(OptionalHeader.ImageBase); }

private:
	int fd;
	void* dump_base;
	int dump_total_len;

	// codeview

	IMAGE_DOS_HEADER *dos;
	IMAGE_NT_HEADERS32* hdr32;
	IMAGE_NT_HEADERS64* hdr64;
	IMAGE_SECTION_HEADER* sec;
	IMAGE_DEBUG_DIRECTORY* dbgDir;
	OMFDirHeader* dirHeader;
	OMFDirEntry* dirEntry;
	
public:
	//dwarf

	char* debug_aranges;
	char* debug_pubnames;
	char* debug_pubtypes;
	char* debug_info;     unsigned long debug_info_length;
	char* debug_abbrev;   unsigned long debug_abbrev_length;
	char* debug_line;     unsigned long debug_line_length;
	char* debug_frame;
	char* debug_str;
	char* debug_loc;
	char* debug_ranges;   unsigned long debug_ranges_length;
	char* reloc;          unsigned long reloc_length;

	int codeSegment;
	int cv_base;
};


#endif //__PEIMAGE_H__