Hesham Almatary wrote: > You might be confusing taking BASE[XLEN-1:2] (see Figure 3.8) with shifting > an address by 2. RTEMS aligns _RISCV_Exception_handler to 4 bytes as per the > specification, so you'd always end up with an address with zeros in the least > significant 2 bits. So, BASE[1:0] will always be zero. When you write that to > mtvec, you'll effectively set the MODE to 0 (Direct), and BASE[XLEN-1:2] will > be placed as is in mtvec.
> I hope that clarifies things up a bit. Yes it does, thanks a lot. So in the end it was a notation misinterpretation. FIELD[x:y] means the slice of FIELD bits ranging from bit x to bit y, NOT that FIELD is x-y bits wide. Jens ________________________________ Tesat-Spacecom GmbH & Co. KG Sitz: Backnang; Registergericht: Amtsgericht Stuttgart HRA 270977 Persoenlich haftender Gesellschafter: Tesat-Spacecom Geschaeftsfuehrungs GmbH; Sitz: Backnang; Registergericht: Amtsgericht Stuttgart HRB 271658; Geschaeftsfuehrung: Dr. Marc Steckling, Kerstin Basche, Ralf Zimmermann [banner] _______________________________________________ users mailing list users@rtems.org http://lists.rtems.org/mailman/listinfo/users
