* x1 - src
*/
ENTRY(copy_page)
-alternative_if_not ARM64_HAS_NO_HW_PREFETCH
- nop
- nop
-alternative_else
+alternative_if ARM64_HAS_NO_HW_PREFETCH
# Prefetch two cache lines ahead.
prfm pldl1strm, [x1, #128]
prfm pldl1strm, [x1, #256]
-alternative_endif
+alternative_else_nop_endif
ldp x2, x3, [x1]
ldp x4, x5, [x1, #16]
1:
subs x18, x18, #128
-alternative_if_not ARM64_HAS_NO_HW_PREFETCH
- nop
-alternative_else
+alternative_if ARM64_HAS_NO_HW_PREFETCH
prfm pldl1strm, [x1, #384]
-alternative_endif
+alternative_else_nop_endif
stnp x2, x3, [x0]
ldp x2, x3, [x1]