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Index > Compiler Internals > .sys PE PROBLEM

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Wztml



Joined: 08 Mar 2012
Posts: 6
Location: China
Wztml 16 May 2012, 14:02
here is the problem
Why aren't these sections aligned with 1000h boundary??


Description: This is the one generated by VC++
Filesize: 14.14 KB
Viewed: 5563 Time(s)

Capture2.PNG


Description: This is the one i wrote with fasm
Filesize: 9.34 KB
Viewed: 5563 Time(s)

Capture1.PNG


Post 16 May 2012, 14:02
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Tomasz Grysztar



Joined: 16 Jun 2003
Posts: 8356
Location: Kraków, Poland
Tomasz Grysztar 16 May 2012, 14:12
Post 16 May 2012, 14:12
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revolution
When all else fails, read the source


Joined: 24 Aug 2004
Posts: 20423
Location: In your JS exploiting you and your system
revolution 16 May 2012, 14:12
0x200 is the standard file alignment for PE files. The memory alignment is 0x1000.

The only thing that doesn't follow this rule is the native format for drivers. These are aligned on 0x20 boundaries.

Maybe the VC++ linker generates suboptimal binaries? Do you need fasm to also generate suboptimal binaries? If so then you can use an external linker.
Post 16 May 2012, 14:12
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Wztml



Joined: 08 Mar 2012
Posts: 6
Location: China
Wztml 17 May 2012, 01:38
re: Tomasz
Thanks
Post 17 May 2012, 01:38
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Wztml



Joined: 08 Mar 2012
Posts: 6
Location: China
Wztml 17 May 2012, 02:06
revolution wrote:
0x200 is the standard file alignment for PE files. The memory alignment is 0x1000.

The only thing that doesn't follow this rule is the native format for drivers. These are aligned on 0x20 boundaries.

Maybe the VC++ linker generates suboptimal binaries? Do you need fasm to also generate suboptimal binaries? If so then you can use an external linker.


Thanks too,

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Post 17 May 2012, 02:06
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