Re: Immediate values

H. Peter Anvin
2009-09-24T14:17:47Z

Jason Baron wrote:
>
> http://marc.info/?l=linux-kernel&m=125200966226921&w=2
>
> The basic idea is that gcc, 4.5 will have support for an 'asm goto'
> construct which can refer to c code labels. Thus, we can replace a nop
> in the code stream with a 'jmp' instruction to various branch targets.
>

Looking at the above, I'm a bit unclear for the need for a NOP5. We
obviously need a *total* of 5 bytes, but at least I don't seem to
understand why we need 7 bytes per tracepoint.

-hpa