joevt cb88bab67d ppcopcodes: Fixes for SPRs. ... - Rename DEC to DEC_S and add DEC_U. - MQ, RTCL_U, RTCU_U, and DEC_U should cause an illegal instruction program exception for non-MPC601 CPUs. The exception handler of classic Mac OS uses this to emulate the instruction. - For mtspr, the SPRs RTCL_U, RTCU_U, and DEC_U are treated as no-op on MPC601. - For debugging, use the supervisor instead of the user SPR number as the index for storing the values for RTC, TB, and DEC. - For debugging, RTC, TB, and DEC should be updated after each access. Previously, mfspr and mtspr would only update the half of RTC and TB that was being accessed instead of both halves.		2024-04-10 07:21:54 -07:00
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ppc	ppcopcodes: Fixes for SPRs.	2024-04-10 07:21:54 -07:00