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Diffstat (limited to 'arch/c6x/lib/strasgi.S')
| -rw-r--r-- | arch/c6x/lib/strasgi.S | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/arch/c6x/lib/strasgi.S b/arch/c6x/lib/strasgi.S new file mode 100644 index 000000000000..de2740765536 --- /dev/null +++ b/arch/c6x/lib/strasgi.S | |||
| @@ -0,0 +1,89 @@ | |||
| 1 | ;; Copyright 2010 Free Software Foundation, Inc. | ||
| 2 | ;; Contributed by Bernd Schmidt <bernds@codesourcery.com>. | ||
| 3 | ;; | ||
| 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. | ||
| 8 | ;; | ||
| 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. | ||
| 13 | ;; | ||
| 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. | ||
| 17 | |||
| 18 | #include <linux/linkage.h> | ||
| 19 | |||
| 20 | .text | ||
| 21 | |||
| 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. | ||
| 25 | ldw .d2t1 *B4++, A0 | ||
| 26 | || mvk .s2 16, B1 | ||
| 27 | ldw .d2t1 *B4++, A1 | ||
| 28 | || mvk .s2 20, B2 | ||
| 29 | || sub .d1 A6, 24, A6 | ||
| 30 | ldw .d2t1 *B4++, A5 | ||
| 31 | ldw .d2t1 *B4++, A7 | ||
| 32 | || mv .l2x A6, B7 | ||
| 33 | ldw .d2t1 *B4++, A8 | ||
| 34 | ldw .d2t1 *B4++, A9 | ||
| 35 | || mv .s2x A0, B5 | ||
| 36 | || cmpltu .l2 B2, B7, B0 | ||
| 37 | |||
| 38 | _strasgi_loop: | ||
| 39 | stw .d1t2 B5, *A4++ | ||
| 40 | || [B0] ldw .d2t1 *B4++, A0 | ||
| 41 | || mv .s2x A1, B5 | ||
| 42 | || mv .l2 B7, B6 | ||
| 43 | |||
| 44 | [B0] sub .d2 B6, 24, B7 | ||
| 45 | || [B0] b .s2 _strasgi_loop | ||
| 46 | || cmpltu .l2 B1, B6, B0 | ||
| 47 | |||
| 48 | [B0] ldw .d2t1 *B4++, A1 | ||
| 49 | || stw .d1t2 B5, *A4++ | ||
| 50 | || mv .s2x A5, B5 | ||
| 51 | || cmpltu .l2 12, B6, B0 | ||
| 52 | |||
| 53 | [B0] ldw .d2t1 *B4++, A5 | ||
| 54 | || stw .d1t2 B5, *A4++ | ||
| 55 | || mv .s2x A7, B5 | ||
| 56 | || cmpltu .l2 8, B6, B0 | ||
| 57 | |||
| 58 | [B0] ldw .d2t1 *B4++, A7 | ||
| 59 | || stw .d1t2 B5, *A4++ | ||
| 60 | || mv .s2x A8, B5 | ||
| 61 | || cmpltu .l2 4, B6, B0 | ||
| 62 | |||
| 63 | [B0] ldw .d2t1 *B4++, A8 | ||
| 64 | || stw .d1t2 B5, *A4++ | ||
| 65 | || mv .s2x A9, B5 | ||
| 66 | || cmpltu .l2 0, B6, B0 | ||
| 67 | |||
| 68 | [B0] ldw .d2t1 *B4++, A9 | ||
| 69 | || stw .d1t2 B5, *A4++ | ||
| 70 | || mv .s2x A0, B5 | ||
| 71 | || cmpltu .l2 B2, B7, B0 | ||
| 72 | |||
| 73 | ;; loop back branch happens here | ||
| 74 | |||
| 75 | cmpltu .l2 B1, B6, B0 | ||
| 76 | || ret .s2 b3 | ||
| 77 | |||
| 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++ | ||
| 87 | |||
| 88 | ;; return happens here | ||
| 89 | ENDPROC(__c6xabi_strasgi) | ||