strex instrucion question in v6_early_abort

[minchan kim]

Hi catalin,

Now I am trying to understand your patch in linux kernel.

  .align  5
ENTRY(v6_early_abort)
#ifdef CONFIG_CPU_32v6K
  clrex
#else
  strex r0, r1, [sp]      @ Clear the exclusive monitor
<====================== This
#endif
  mrc p15, 0, r1, c5, c0, 0   @ get FSR
  mrc p15, 0, r0, c6, c0, 0   @ get FAR

I think that you insert just ""dummy strex"" for preventing
unpredicatable state of exclusive monitor. Is right?
If it is right, Why do you use r1, [sp] in all of registers ? Is there
any issue ?


-- 
Kinds regards,
barrios
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