|
1 // Copyright (c) 1996-2009 Nokia Corporation and/or its subsidiary(-ies). |
|
2 // All rights reserved. |
|
3 // This component and the accompanying materials are made available |
|
4 // under the terms of "Eclipse Public License v1.0" |
|
5 // which accompanies this distribution, and is available |
|
6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
|
7 // |
|
8 // Initial Contributors: |
|
9 // Nokia Corporation - initial contribution. |
|
10 // |
|
11 // Contributors: |
|
12 // |
|
13 // Description: |
|
14 // |
|
15 |
|
16 #include <e32std.h> |
|
17 #include <e32std_private.h> |
|
18 #include "pe_file.h" |
|
19 #include <string.h> |
|
20 #include "e32image.h" |
|
21 |
|
22 TInt PEFile::CmpSectionName(PIMAGE_SECTION_HEADER apSectionHeader, char *aName) |
|
23 // |
|
24 // Returns true if the name of the pe section is the same as aName |
|
25 // |
|
26 { |
|
27 |
|
28 return (strnicmp((const char *)apSectionHeader->Name, aName, IMAGE_SIZEOF_SHORT_NAME)==0); |
|
29 } |
|
30 |
|
31 TInt PEFile::VirtualAddressInSection(TUint aVA, PIMAGE_SECTION_HEADER aHeader) |
|
32 // |
|
33 // Returns true if the virtual address is in the section |
|
34 // |
|
35 { |
|
36 |
|
37 TUint start = iLinkedBase + aHeader->VirtualAddress; |
|
38 TUint finish = start + aHeader->Misc.VirtualSize; |
|
39 return (aVA>=start) && (aVA<finish); |
|
40 } |
|
41 |
|
42 TUint PEFile::DistanceFromSection(TUint aVA, PIMAGE_SECTION_HEADER aHeader) |
|
43 // |
|
44 // Returns the minimum distance from aVA to any address in the specified section |
|
45 // |
|
46 { |
|
47 |
|
48 TUint start = iLinkedBase + aHeader->VirtualAddress; |
|
49 TUint finish = start + aHeader->Misc.VirtualSize; |
|
50 if (aVA>=start) |
|
51 { |
|
52 if (aVA<finish) |
|
53 return 0; |
|
54 return aVA - finish + 1; |
|
55 } |
|
56 return start - aVA; |
|
57 } |
|
58 |
|
59 TInt PEFile::FindSectionByVa(TUint aVA, TUint aTryToBeClever) |
|
60 { |
|
61 TInt i; |
|
62 TInt s = -1; |
|
63 if (aTryToBeClever == 0) |
|
64 { |
|
65 for (i=0; i<KNumberOfSections; i++) |
|
66 if (iSectionHeader[i]) |
|
67 if (VirtualAddressInSection(aVA, iSectionHeader[i])) |
|
68 s=i; |
|
69 } |
|
70 if (aTryToBeClever == 1) |
|
71 { |
|
72 // Find the minimum distance from the specified address to any section |
|
73 TUint dist = KMaxTUint; |
|
74 for (i=0; i<KNumberOfSections; i++) |
|
75 { |
|
76 if (!iSectionHeader[i]) |
|
77 continue; |
|
78 TUint d = DistanceFromSection(aVA, iSectionHeader[i]); |
|
79 if (d < dist) |
|
80 { |
|
81 dist = d; |
|
82 s = i; |
|
83 } |
|
84 else if (d == dist) |
|
85 { |
|
86 s = -1; // Ambiguous :-( |
|
87 } |
|
88 } |
|
89 if (dist >= 0x1000u) |
|
90 s = -1; // too far for comfort |
|
91 } |
|
92 return s; |
|
93 } |