Ville Juven c15b6701ce RISC-V: Implement option to run NuttX in supervisor mode (S-mode) ... - Add config "ARCH_USE_S_MODE" which controls whether the kernel runs in M-mode or S-mode - Add more MSTATUS and most of the SSTATUS register definitions - Add more MIP flags for interrupt delegation - Add handling of interrupts from S-mode - Add handling of FPU from S-mode - Add new context handling functions that are not dependent on the trap handlers / ecall NOTE: S-mode requires a companion SW (SBI) which is not yet implemented, thus S-mode is not usable as is, yet.		2022-04-01 16:19:42 -03:00
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smartl-c906	RISC-V: Implement option to run NuttX in supervisor mode (S-mode)	2022-04-01 16:19:42 -03:00