1 ;; Copyright 2010 Free Software Foundation, Inc.
2 ;; Contributed by Bernd Schmidt <bernds@codesourcery.com>.
4 ;; This program is free software; you can redistribute it and/or modify
5 ;; it under the terms of the GNU General Public License as published by
6 ;; the Free Software Foundation; either version 2 of the License, or
7 ;; (at your option) any later version.
9 ;; This program is distributed in the hope that it will be useful,
10 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
11 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 ;; GNU General Public License for more details.
14 ;; You should have received a copy of the GNU General Public License
15 ;; along with this program; if not, write to the Free Software
16 ;; Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
18 #include <linux/linkage.h>
22 ENTRY(__c6xabi_strasgi)
23 ;; This is essentially memcpy, with alignment known to be at least
24 ;; 4, and the size a multiple of 4 greater than or equal to 28.
36 || cmpltu .l2 B2, B7, B0
40 || [B0] ldw .d2t1 *B4++, A0
44 [B0] sub .d2 B6, 24, B7
45 || [B0] b .s2 _strasgi_loop
46 || cmpltu .l2 B1, B6, B0
48 [B0] ldw .d2t1 *B4++, A1
49 || stw .d1t2 B5, *A4++
51 || cmpltu .l2 12, B6, B0
53 [B0] ldw .d2t1 *B4++, A5
54 || stw .d1t2 B5, *A4++
56 || cmpltu .l2 8, B6, B0
58 [B0] ldw .d2t1 *B4++, A7
59 || stw .d1t2 B5, *A4++
61 || cmpltu .l2 4, B6, B0
63 [B0] ldw .d2t1 *B4++, A8
64 || stw .d1t2 B5, *A4++
66 || cmpltu .l2 0, B6, B0
68 [B0] ldw .d2t1 *B4++, A9
69 || stw .d1t2 B5, *A4++
71 || cmpltu .l2 B2, B7, B0
73 ;; loop back branch happens here
78 [B0] stw .d1t1 A1, *A4++
79 || cmpltu .l2 12, B6, B0
80 [B0] stw .d1t1 A5, *A4++
81 || cmpltu .l2 8, B6, B0
82 [B0] stw .d1t1 A7, *A4++
83 || cmpltu .l2 4, B6, B0
84 [B0] stw .d1t1 A8, *A4++
85 || cmpltu .l2 0, B6, B0
86 [B0] stw .d1t1 A9, *A4++
88 ;; return happens here
89 ENDPROC(__c6xabi_strasgi)