This patch adds doxygen style documentation for struct sbi_trap_regs
and related macros/defines/functions.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
The struct sbi_trap_regs related defines RISCV_TRAP_REGS_xyz should
be in sbi_trap.h so that we can keep these defines in-sync with changes
in struct sbi_trap_regs.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Currently, we fail with error SBI_ENOTSUPP when we are not able
to handle illegal instruction trap. Instead, we should just
redirect illegal instruction trap to S-mode when not handled.
This redirection of illegal instruction trap will help lazy
save/restore of floating point registers to work correctly in
Linux kernel.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
