| /* |
| * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com) |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| */ |
| |
| #include <asm/linkage.h> |
| |
| ARC_ENTRY memcpy |
| or r3,r0,r1 |
| asl_s r3,r3,30 |
| mov_s r5,r0 |
| brls.d r2,r3,.Lcopy_bytewise |
| sub.f r3,r2,1 |
| ld_s r12,[r1,0] |
| asr.f lp_count,r3,3 |
| bbit0.d r3,2,.Lnox4 |
| bmsk_s r2,r2,1 |
| st.ab r12,[r5,4] |
| ld.a r12,[r1,4] |
| .Lnox4: |
| lppnz .Lendloop |
| ld_s r3,[r1,4] |
| st.ab r12,[r5,4] |
| ld.a r12,[r1,8] |
| st.ab r3,[r5,4] |
| .Lendloop: |
| breq r2,0,.Last_store |
| ld r3,[r5,0] |
| #ifdef __LITTLE_ENDIAN__ |
| add3 r2,-1,r2 |
| ; uses long immediate |
| xor_s r12,r12,r3 |
| bmsk r12,r12,r2 |
| xor_s r12,r12,r3 |
| #else /* BIG ENDIAN */ |
| sub3 r2,31,r2 |
| ; uses long immediate |
| xor_s r3,r3,r12 |
| bmsk r3,r3,r2 |
| xor_s r12,r12,r3 |
| #endif /* ENDIAN */ |
| .Last_store: |
| j_s.d [blink] |
| st r12,[r5,0] |
| |
| .balign 4 |
| .Lcopy_bytewise: |
| jcs [blink] |
| ldb_s r12,[r1,0] |
| lsr.f lp_count,r3 |
| bhs_s .Lnox1 |
| stb.ab r12,[r5,1] |
| ldb.a r12,[r1,1] |
| .Lnox1: |
| lppnz .Lendbloop |
| ldb_s r3,[r1,1] |
| stb.ab r12,[r5,1] |
| ldb.a r12,[r1,2] |
| stb.ab r3,[r5,1] |
| .Lendbloop: |
| j_s.d [blink] |
| stb r12,[r5,0] |
| ARC_EXIT memcpy |
