tree aad41097ea2f30dcf7cfbb19dab823dc0443373a
parent ad7ee8a290d08a2fe9d408af2461d1f583d96f7d
author Claudio Fontana <claudio.fontana@linaro.org> 1387309352 +0000
committer Peter Maydell <peter.maydell@linaro.org> 1387309352 +0000

target-arm: A64: expand decoding skeleton for system instructions

Decode the various kinds of system instructions:
 hints (HINT), which include NOP, YIELD, WFE, WFI, SEV, SEL
 sync instructions, which include CLREX, DSB, DMB, ISB
 msr_i, which move immediate to processor state field
 sys, which include all SYS and SYSL instructions
 msr, which move from a gp register to a system register
 mrs, which move from a system register to a gp register

Provide implementations where they are trivial nops.

Signed-off-by: Claudio Fontana <claudio.fontana@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>