5 Aug
2020
5 Aug
'20
2:07 a.m.
On Tue, Aug 04, 2020 at 07:01:01PM -0700, Palmer Dabbelt wrote:
We currently have @start_pos fixed at 0 across all calls, which works as a result of the implementation, in particular because we have no padding between the FP general registers and the FP control and status register, but appears not to have been the intent of the API and is not what other ports do, requiring one to study the copy handlers to understand what is going on here.
start_pos *is* fixed at 0 and it's going to go away, along with the sodding user_regset_copyout() very shortly. ->get() is simply a bad API. See vfs.git#work.regset for replacement. And ->put() is also going to be taken out and shot (next cycle, most likely).