diff options
Diffstat (limited to 'arch/arm64/lib/copy_from_user.S')
| -rw-r--r-- | arch/arm64/lib/copy_from_user.S | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/arm64/lib/copy_from_user.S b/arch/arm64/lib/copy_from_user.S index 34e317907524..400057d607ec 100644 --- a/arch/arm64/lib/copy_from_user.S +++ b/arch/arm64/lib/copy_from_user.S @@ -52,6 +52,13 @@ stp \reg1, \reg2, [\ptr], \val .endm + .macro cpy1 dst, src, count + .arch_extension mops + USER_CPY(9997f, 0, cpyfprt [\dst]!, [\src]!, \count!) + USER_CPY(9996f, 0, cpyfmrt [\dst]!, [\src]!, \count!) + USER_CPY(9996f, 0, cpyfert [\dst]!, [\src]!, \count!) + .endm + end .req x5 srcin .req x15 SYM_FUNC_START(__arch_copy_from_user) @@ -62,6 +69,9 @@ SYM_FUNC_START(__arch_copy_from_user) ret // Exception fixups +9996: b.cs 9997f + // Registers are in Option A format + add dst, dst, count 9997: cmp dst, dstin b.ne 9998f // Before being absolutely sure we couldn't copy anything, try harder |