diff options
Diffstat (limited to 'arch/arm64/lib/tishift.S')
| -rw-r--r-- | arch/arm64/lib/tishift.S | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/arch/arm64/lib/tishift.S b/arch/arm64/lib/tishift.S index 7236776655ed..0179a43cc045 100644 --- a/arch/arm64/lib/tishift.S +++ b/arch/arm64/lib/tishift.S @@ -57,3 +57,24 @@ ENTRY(__ashrti3) mov x1, x2 ret ENDPROC(__ashrti3) + +ENTRY(__lshrti3) + cbz x2, 1f + mov x3, #64 + sub x3, x3, x2 + cmp x3, #0 + b.le 2f + lsr x0, x0, x2 + lsl x3, x1, x3 + lsr x2, x1, x2 + orr x0, x0, x3 + mov x1, x2 +1: + ret +2: + neg w0, w3 + mov x2, #0 + lsr x0, x1, x0 + mov x1, x2 + ret +ENDPROC(__lshrti3) |