RTEMS MIPS Applications Supplement
As discussed above, the XXX and XXX instructions do
not automatically save any registers. RTEMS uses the registers
D0, D1, A0, and A1 as scratch registers. These registers are
not preserved by RTEMS directives therefore, the contents of
these registers should not be assumed upon return from any RTEMS
directive.
RTEMS MIPS Applications Supplement
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