Hi,
Because I found when I use lib command convert the xxx.obj generated by cl to xxx.lib, link the xxx.lib instead of xxx.obj with other libraries to .dll. The unused zero pads would be removed. It is very strange. Can you tell me why?
BR
Sean
From: xxxxx@lists.osr.com [mailto:xxxxx@lists.osr.com] On Behalf Of Shang, Sean
Sent: 2006??6??1?? 9:58
To: Windows System Software Devs Interest List
Subject: RE: [ntdev] [ntdev]: Question about the .reloc section?
Thanks!
But I had set the ALIGN as 32Bytes in options of linker, it does not reduce size of zero pads in .reloc section. And I also used the /NODEFAULTLIBRARY to link my code.
BR
Sean
From: xxxxx@lists.osr.com [mailto:xxxxx@lists.osr.com] On Behalf Of Edouard A.
Sent: 2006??5??31?? 19:15
To: Windows System Software Devs Interest List
Subject: RE: [ntdev] [ntdev]: Question about the .reloc section?
The .reloc sections is made of relocation addresses lists which ends with a double 0 + alignment. Do not remove them. If you wish to reduce the size of your binary, reduce the alignment (at your own risks??) or pack it (with UPX for example).
From: xxxxx@lists.osr.com [mailto:xxxxx@lists.osr.com] On Behalf Of Shang, Sean
Sent: Wednesday, May 31, 2006 05:48
To: Windows System Software Devs Interest List
Subject: [ntdev] [ntdev]: Question about the .reloc section?
Hi,
I have a question about the DDK compiler/Linker.
My question:
When I build a .DLL file, I found the .reloc section is padded with some strange zero. Can you tell me the reason?
If the zero padings are not useful, Could you tell me how to stripe it from the .dll file with DDK tool-chain?
The .dll dump information of the .reloc section is included following:
SECTION HEADER #4
00000230 : 2E 72 65 6C 6F 63 00 30
00000230 : E0 06 00 00 80 11 00 00 E0 06 00 00 80 11 00 00
00000230 : 00 00 00 00 00 00 00 00 00 00 00 00 40 00 00 42
.reloc name
6E0 virtual size
1180 virtual address (10001180 to 1000185F)
6E0 size of raw data
1180 file pointer to raw data (00001180 to 0000185F)
0 file pointer to relocation table
0 file pointer to line numbers
0 number of relocations
0 number of line numbers
42000040 flags
Initialized Data
Discardable
Read Only
RAW DATA #4
10001180: 00 00 00 00 74 00 00 00 70 32 7A 32 81 32 A0 32 …t…p2z2.22
10001190: B0 32 DF 32 E9 32 F3 32 01 33 2D 33 34 33 76 33 ??22??2??2.3-343v3
100011A0: A5 35 E6 35 43 37 65 37 93 37 9A 37 AF 37 CC 37 ??55C7e7.7.7??7??7
100011B0: E3 37 30 3A 7D 3A 84 3A 64 3D 6C 3D 74 3D 7C 3D 70:}:.:d=l=t=|=
100011C0: 84 3D 8C 3D 94 3D 9C 3D A4 3D AC 3D B4 3D BC 3D .=.=.=.=??==??==
100011D0: C4 3D CC 3D D4 3D DC 3D E4 3D EC 3D F4 3D FC 3D =??==??==??==??=
100011E0: 04 3E 0C 3E 14 3E 1C 3E 24 3E 2C 3E 34 3E 3C 3E .>.>.>.>$>,>4><>
100011F0: 44 3E 00 00 00 10 00 00 10 00 00 00 30 31 38 31 D>…0181
10001200: 3C 31 00 00 00 00 00 00 00 00 00 00 00 00 00 00 <1…
10001210: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 …
10001220: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 …
??.. // Zero padding
10001830: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 …
10001840: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 …
10001850: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 …
BASE RELOCATIONS #4
0 RVA, 74 SizeOfBlock
270 HIGHLOW 10000BE8
27A HIGHLOW 10000BD4
281 HIGHLOW 10000B60
2A0 HIGHLOW 10001120
2B0 HIGHLOW 10001134
2DF HIGHLOW 10000BE8
2E9 HIGHLOW 10000BD4
2F3 HIGHLOW 10000C10
301 HIGHLOW 10001140
32D HIGHLOW 10000CC0
334 HIGHLOW 10000C78
376 HIGHLOW 10000C64
5A5 HIGHLOW 10000D40
5E6 HIGHLOW 10000D0C
743 HIGHLOW 10000D00
765 HIGHLOW 10000CE4
793 HIGHLOW 10000D4C
79A HIGHLOW 10000D64
7AF HIGHLOW 10000D64
7CC HIGHLOW 10000CDC
7E3 HIGHLOW 10000CD8
A30 HIGHLOW 10000E50
A7D HIGHLOW 10001068
A84 HIGHLOW 10001020
D64 HIGHLOW 10001018
D6C HIGHLOW 1000100C
D74 HIGHLOW 10000FF8
D7C HIGHLOW 10000FEC
D84 HIGHLOW 10000FDC
D8C HIGHLOW 10000FC8
D94 HIGHLOW 10000FBC
D9C HIGHLOW 10000FAC
DA4 HIGHLOW 10000F9C
DAC HIGHLOW 10000F88
DB4 HIGHLOW 10000F78
DBC HIGHLOW 10000F6C
DC4 HIGHLOW 10000F60
DCC HIGHLOW 10000F50
DD4 HIGHLOW 10000F44
DDC HIGHLOW 10000F34
DE4 HIGHLOW 10000F28
DEC HIGHLOW 10000F1C
DF4 HIGHLOW 10000F10
DFC HIGHLOW 10000F04
E04 HIGHLOW 10000EF4
E0C HIGHLOW 10000EEC
E14 HIGHLOW 10000EE0
E1C HIGHLOW 10000ED4
E24 HIGHLOW 10000EC4
E2C HIGHLOW 10000EAC
E34 HIGHLOW 10000E94
E3C HIGHLOW 10000E7C
E44 HIGHLOW 10000E60
0 ABS
1000 RVA, 10 SizeOfBlock
130 HIGHLOW 100002CA
138 HIGHLOW 10001120
13C HIGHLOW 10001130
0 ABS
BR
Sean
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Questions? First check the Kernel Driver FAQ at http://www.osronline.com/article.cfm?id=256
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