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Diffstat (limited to '')
| -rw-r--r-- | arch/c6x/lib/divremi.S | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/arch/c6x/lib/divremi.S b/arch/c6x/lib/divremi.S new file mode 100644 index 000000000..575fc57a8 --- /dev/null +++ b/arch/c6x/lib/divremi.S @@ -0,0 +1,34 @@ +;; SPDX-License-Identifier: GPL-2.0-or-later +;; Copyright 2010 Free Software Foundation, Inc. +;; Contributed by Bernd Schmidt <bernds@codesourcery.com>. +;; + +#include <linux/linkage.h> + + .text +ENTRY(__c6xabi_divremi) + stw .d2t2 B3, *B15--[2] +|| cmpgt .l1 0, A4, A1 +|| cmpgt .l2 0, B4, B2 +|| mv .s1 A4, A5 +|| call .s2 __c6xabi_divu + + [A1] neg .l1 A4, A4 +|| [B2] neg .l2 B4, B4 +|| xor .s2x B2, A1, B0 +|| mv .d2 B4, B2 + + [B0] addkpc .s2 _divu_ret_1, B3, 1 + [!B0] addkpc .s2 _divu_ret_2, B3, 1 + nop 2 +_divu_ret_1: + neg .l1 A4, A4 +_divu_ret_2: + ldw .d2t2 *++B15[2], B3 + + mpy32 .m1x A4, B2, A6 + nop 3 + ret .s2 B3 + sub .l1 A5, A6, A5 + nop 4 +ENDPROC(__c6xabi_divremi) |