XPost: comp.lang.forth   
   From: albert@nospicedham.cherry   
      
   In article <5e664d7e.203314246@news.eternal-september.org>,   
   Stephen Pelc  wrote:   
   >On 09 Mar 2020 07:39:30 GMT, albert@nospicedham.cherry (none) (albert)   
   >wrote:   
   >   
   >>>58                               pop eax   
   >>>48                               dec eax   
   >>>81 C0 0C 00 00 00    add eax, 000000Ch   
   >>>50                               push eax   
   >>>48                               dec eax   
   >>>AD                              lodsd   
   >>>FF 20                          jmp dword ptr [eax]   
   >   
   >In AMD64, the 4x instructions are *all* REX prefices. The 48   
   >instruction is NOT a DEC reg instruction, it's a REX prefix.   
      
   Thanks for helping me out in explaining this to some   
   asm.x86 denizens.   
      
   Please note that I did not publish this disassembly.   
   This was my disassembly accompagnied with a hex dump,   
   with the Quadruple prefixes.   
       CODE PIET3   
       QN: MOVI|X, AX| 2 IL,   
       QN: PUSH|X, AX|   
       NEXT,   
       END-CODE   
   >   
   >Stephen   
      
   Groetjes Albert   
   --   
   This is the first day of the end of your life.   
   It may not kill you, but it does make your weaker.   
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