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Date: Mon, 5 Aug 2013 23:47:11 +0200
From: Dániel Bali <balijanosdaniel@...il.com>
To: john-dev@...ts.openwall.com
Subject: [GSoC] GCN Local Data Storage problems
Hello!
I've been having a problem with LDS for a week and Lukas suggested to post
here so everybody can see the problem and hopefully someone can help.
Here is the thread where I asked about LDS on the AMD forums:
http://devgurus.amd.com/thread/167167
The answer I got wasn't totally clear to me at first but after looking at
the binary for a long time I realized what it means.
Max LDS size and actual LDS size are the numbers that come after the
integer values 0x80000081, and 0x80000082.
I changed these values in the dummy binary that I patch but it didn't help.
The LDS read instruction still loads 0 into the VGPR.
There was another LDS size related value described:
SetCalNote($00002e13,(ldsSizeBytes+255)shr 8 shl 15,$FFF07FFF{and mask});
<- this updates the ldsSize field in the COMPUTE_PGM_RSRC2 structure.
The byte value after this 0x00002e13 is 0x98, which doesn't make any sense
in this context.
Does anyone know what may be wrong?
Should I just keep asking on the forums?
Thanks,
Daniel
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