m68k padding between methods at ld time

[Joel Sherrill]

Ian Lance Taylor wrote:
> Nick Clifton <nickc@redhat.com> writes:
>
>   
>> Hi Joel,
>>
>>     
>>> Thanks.  I do not have a tree for writing checked out at the
>>> moment.  Attached is the patch.
>>>       
>> Just to be clear - why do you want NOP instructions rather than RTS
>> instructions ?
>>     
>
> In the general case, you need to have nop instructions because of
> sections like .init and .fini which are built up from several object
> files and in which the flow of control must go from one object file to
> the next.  Alignment may introduce gaps between the sections, and the
> linker must fill those gaps with nops.
>
> Whether this ever happens on the m68k in particular I don't know.
>
>   
I saw gaps between methods and they were being filled
with rts (0x4e75) instead of nop (0x4e71).

The definition of NOP in the emulparams file was for
the rts opcode not a nop opcode.

--joel
> Ian
>   


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