| Alexey Brodkin | b628c01 | 2014-02-04 12:56:15 +0400 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2004, 2007-2010, 2011-2014 Synopsys, Inc. All rights reserved. |
| 3 | * |
| 4 | * SPDX-License-Identifier: GPL-2.0+ |
| 5 | */ |
| 6 | |
| 7 | .global memcpy |
| 8 | .align 4 |
| 9 | memcpy: |
| 10 | or %r3, %r0, %r1 |
| 11 | asl_s %r3, %r3, 30 |
| 12 | mov_s %r5, %r0 |
| 13 | brls.d %r2, %r3, .Lcopy_bytewise |
| 14 | sub.f %r3, %r2, 1 |
| 15 | ld_s %r12, [%r1, 0] |
| 16 | asr.f %lp_count, %r3, 3 |
| 17 | bbit0.d %r3, 2, .Lnox4 |
| 18 | bmsk_s %r2, %r2, 1 |
| 19 | st.ab %r12, [%r5, 4] |
| 20 | ld.a %r12, [%r1, 4] |
| 21 | .Lnox4: |
| 22 | lppnz .Lendloop |
| 23 | ld_s %r3, [%r1, 4] |
| 24 | st.ab %r12, [%r5, 4] |
| 25 | ld.a %r12, [%r1, 8] |
| 26 | st.ab %r3, [%r5, 4] |
| 27 | .Lendloop: |
| 28 | breq %r2, 0, .Last_store |
| 29 | ld %r3, [%r5, 0] |
| 30 | #ifdef __LITTLE_ENDIAN__ |
| 31 | add3 %r2, -1, %r2 |
| 32 | /* uses long immediate */ |
| 33 | xor_s %r12, %r12, %r3 |
| 34 | bmsk %r12, %r12, %r2 |
| 35 | xor_s %r12, %r12, %r3 |
| 36 | #else /* __BIG_ENDIAN__ */ |
| 37 | sub3 %r2, 31, %r2 |
| 38 | /* uses long immediate */ |
| 39 | xor_s %r3, %r3, %r12 |
| 40 | bmsk %r3, %r3, %r2 |
| 41 | xor_s %r12, %r12, %r3 |
| 42 | #endif /* _ENDIAN__ */ |
| 43 | .Last_store: |
| 44 | j_s.d [%blink] |
| 45 | st %r12, [%r5, 0] |
| 46 | |
| 47 | .balign 4 |
| 48 | .Lcopy_bytewise: |
| 49 | jcs [%blink] |
| 50 | ldb_s %r12, [%r1, 0] |
| 51 | lsr.f %lp_count, %r3 |
| 52 | bhs_s .Lnox1 |
| 53 | stb.ab %r12, [%r5, 1] |
| 54 | ldb.a %r12, [%r1, 1] |
| 55 | .Lnox1: |
| 56 | lppnz .Lendbloop |
| 57 | ldb_s %r3, [%r1, 1] |
| 58 | stb.ab %r12, [%r5, 1] |
| 59 | ldb.a %r12, [%r1, 2] |
| 60 | stb.ab %r3, [%r5, 1] |
| 61 | .Lendbloop: |
| 62 | j_s.d [%blink] |
| 63 | stb %r12, [%r5, 0] |