From 09831ca73443bd819ad7993db5409b19c899ba33 Mon Sep 17 00:00:00 2001 From: Aurelien Jacquiot Date: Tue, 4 Oct 2011 11:15:51 -0400 Subject: C6X: library code Original port to early 2.6 kernel using TI COFF toolchain. Brought up to date by Mark Salter Signed-off-by: Aurelien Jacquiot Signed-off-by: Mark Salter Acked-by: Arnd Bergmann --- arch/c6x/lib/divremi.S | 46 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 arch/c6x/lib/divremi.S (limited to 'arch/c6x/lib/divremi.S') diff --git a/arch/c6x/lib/divremi.S b/arch/c6x/lib/divremi.S new file mode 100644 index 00000000000..64bc5aa95ad --- /dev/null +++ b/arch/c6x/lib/divremi.S @@ -0,0 +1,46 @@ +;; Copyright 2010 Free Software Foundation, Inc. +;; Contributed by Bernd Schmidt . +;; +;; This program is free software; you can redistribute it and/or modify +;; it under the terms of the GNU General Public License as published by +;; the Free Software Foundation; either version 2 of the License, or +;; (at your option) any later version. +;; +;; This program is distributed in the hope that it will be useful, +;; but WITHOUT ANY WARRANTY; without even the implied warranty of +;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +;; GNU General Public License for more details. +;; +;; You should have received a copy of the GNU General Public License +;; along with this program; if not, write to the Free Software +;; Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + +#include + + .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) -- cgit v1.2.3-18-g5258