[PowerPC] Use QEMU-compatible version of SPE accumulator save
Switch from "evaddumiaaw 0,0" to "evmwumiaa 0,0,0" when persisting the accumulator. This has the benefit of actually being implemented in QEMU as it is the form Linux uses for the same task. Both instructions are functionally equivilent, as we are using them for their side effect of copying the accumulator to GPRs rather than for the actual math operation that they are performing. Reviewed by: jhibbits
This commit is contained in:
parent
1bb8eb56ef
commit
a638bf2a76
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=355035
@ -83,7 +83,7 @@ save_vec_int(struct thread *td)
|
||||
#undef EVSTDW
|
||||
|
||||
__asm ( "evxor 0,0,0\n"
|
||||
"evaddumiaaw 0,0\n"
|
||||
"evmwumiaa 0,0,0\n"
|
||||
"evstdd 0,0(%0)" :: "b"(&pcb->pcb_vec.spare[0]));
|
||||
pcb->pcb_vec.vscr = mfspr(SPR_SPEFSCR);
|
||||
|
||||
|
Loading…
Reference in New Issue
Block a user