search for: stvx

Displaying 3 results from an estimated 3 matches for "stvx".

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2011 Nov 30
2
[LLVMdev] Write-only intrinsics
...nly intrinsics? Specifically, utils/TableGen/CodeGenIntrinsics.h contains: // Memory mod/ref behavior of this intrinsic. enum { NoMem, ReadArgMem, ReadMem, ReadWriteArgMem, ReadWriteMem } ModRef; The problem with this seems to be that "store" instructions, like the PPC STVX instruction, that are primarily defined by an intrinsic (int_ppc_altivec_stvx for the STVX instruction) get tagged as "mayLoad" even though they don't load anything. This is because the default mod/ref tag for intrinsics is, for safely, ReadWriteMem, and TableGen makes use of the intr...
2001 Oct 16
1
Defeating Timing Attacks Patch for OpenSSH 2.9.9p2 and 2.9p2
...fprintf(stderr, " -S Don't use stenographic timing manipulation\n"); exit(1); } @@ -319,8 +346,9 @@ host = NULL; again: + /* SD Mod: add s option to getopt() call */ while ((opt = getopt(ac, av, - "1246ab:c:e:fgi:kl:m:no:p:qstvxACD:F:I:L:NPR:TVX")) != -1) { + "1246ab:c:e:fgi:kl:m:no:p:qstvxACD:F:I:L:NPR:STVX")) != -1) { switch (opt) { case '1': options.protocol = SSH_PROTO_1; @@ -525,6 +553,14 @@ case 's':...
2001 Oct 06
1
Defeating Timing Attacks
Hello, In response to the timing analysis attacks presented by Dawn Song et. al. in her paper http://paris.cs.berkeley.edu/~dawnsong/ssh-timing.html we at Silicon Defense developed a patch for openssh to avoid such measures. Timing Analysis Evasion changes were developed by C. Jason Coit and Roel Jonkman of Silicon Defense. These changes cause SSH to send packets unless request not to,