[Qemu-devel] Re: ARM page crossing inside insn? (Re: ARM ethernet fixes)

[Antti P Miettinen]

Antti P Miettinen <address@hidden> writes:
>     __asm__ __volatile__ ("ldmia %0,{%1,%2}"
>                         : "=r" (base) : "0" (base), "r" (dummy));

Hmm.. thats probably wrong.. is this closer:

    __asm__ __volatile__ ("ldmia %0,{%0,%1}"
                          : "+r" (base), "=r" (dummy));

or

    __asm__ __volatile__ ("ldmia %2,{%0,%1}"
                          : "=r" (base), "=r" (dummy)
                          : "0" (base));

but anyway - how would the ldm register update be made atomic? Or
should the restart be able to continue in the middle? How are the
atomicity issues handled in qemu?

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