Messages in this thread | | | Subject | Re: FPU precision & signal handlers (bug?) | Date | Mon, 4 Mar 2002 22:37:57 +0000 (GMT) | From | Alan Cox <> |
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> handlers. We use signals extensively in our program, and were quite > surprised to find kernel FINIT traps being generated from them. After > reading through the 2.4.2 source, I now believe that all signal > handlers run with the default FPU control word in effect. Here's > why...
Think about MMX and hopefully it makes sense then.
> strikes me as kind of a hack. Why should the signal handler, alone > among all my functions (excepting main) be responsible for blowing > away the control word?
Right - I would expect it to be restored at the end of the signal handler for you - is that occuring or not ? I just want to make sure I understand the precise details of the problem here.
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