00 is not an instruction. The machine will pull in the next byte and the next.... Then you will have the add instruction. And it will be executedOn Jun 30, 2019 13:13, Mahmood Naderan via gcc-help <gcc-help@xxxxxxxxxxx> wrote: > > >No. That's not done by GCC or GNU as. > >It's how Intel/AMD CPU parses the machine code. There are no "delimeters" in > >machine code so the CPU regards "00 5d c3" as an instruction. objdump (from > >Binutils) just emulates the behavior of CPU. > > > > But as you can see in the output of "disass /r main", it the GDB or GCC that forms such a machine code. CPU won't fetch any instruction until "run" command is used. Therefore, I think it is GCC or GDB that forms such a machine code. > > > > Regards, > Mahmood > >
