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|    comp.lang.asm.x86    |    Ahh, the lost art of x86 assembly    |    4,675 messages    |
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|    Message 3,543 of 4,675    |
|    Bernhard Schornak to Robert Prins    |
|    Re: Converting MMX to XMM [was: XSAVE ar    |
|    17 Sep 18 22:53:40    |
      From: schornak@nospicedham.web.de              Robert Prins wrote:                     > Tried x65dbg, and tracing into Windows is OK, XMM's are ok, until I hit a:       >       > 74AF2320 | EA 1E27AF74 3300 | jmp far 33:74AF271E         |       >       > which doesn't want to be traced, and which comes back with XMM0, yes, set to       zero.                     If your far jump calls a HLL function, XMM0 is a 'volatile'       register. If you need its content after that function call,       you have to preserve it prior to the call and restore it on       re-entry (or use XMM6 ... XMM15).                     Greetings from Augsburg              Bernhard Schornak              --- SoupGate-Win32 v1.05        * Origin: you cannot sedate... all the things you hate (1:229/2)    |
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