K 10
svn:author
V 3
jhb
K 8
svn:date
V 27
2020-05-09T21:32:44.352820Z
K 7
svn:log
V 343
MFC 357305: Remove unused fields from struct pcb.

cpu_switch/throw() and savectx() do not save or restore any values in
these fields which mostly held non-callee-save registers.

makectx() copied these fields from kdb_frame, but they weren't used
except for PC_REGS using pcb_sepc.  Change PC_REGS to use
kdb_frame->tf_sepc directly instead.

END