1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com) 4 */ 5 6 #include <linux/linkage.h> 7 8 ENTRY_CFI(memcpy) 9 or r3,r0,r1 10 asl_s r3,r3,30 11 mov_s r5,r0 12 brls.d r2,r3,.Lcopy_bytewise 13 sub.f r3,r2,1 14 ld_s r12,[r1,0] 15 asr.f lp_count,r3,3 16 bbit0.d r3,2,.Lnox4 17 bmsk_s r2,r2,1 18 st.ab r12,[r5,4] 19 ld.a r12,[r1,4] 20 .Lnox4: 21 lppnz .Lendloop 22 ld_s r3,[r1,4] 23 st.ab r12,[r5,4] 24 ld.a r12,[r1,8] 25 st.ab r3,[r5,4] 26 .Lendloop: 27 breq r2,0,.Last_store 28 ld r3,[r5,0] 29 #ifdef __LITTLE_ENDIAN__ 30 add3 r2,-1,r2 31 ; uses long immediate 32 xor_s r12,r12,r3 33 bmsk r12,r12,r2 34 xor_s r12,r12,r3 35 #else /* BIG ENDIAN */ 36 sub3 r2,31,r2 37 ; uses long immediate 38 xor_s r3,r3,r12 39 bmsk r3,r3,r2 40 xor_s r12,r12,r3 41 #endif /* ENDIAN */ 42 .Last_store: 43 j_s.d [blink] 44 st r12,[r5,0] 45 46 .balign 4 47 .Lcopy_bytewise: 48 jcs [blink] 49 ldb_s r12,[r1,0] 50 lsr.f lp_count,r3 51 bhs_s .Lnox1 52 stb.ab r12,[r5,1] 53 ldb.a r12,[r1,1] 54 .Lnox1: 55 lppnz .Lendbloop 56 ldb_s r3,[r1,1] 57 stb.ab r12,[r5,1] 58 ldb.a r12,[r1,2] 59 stb.ab r3,[r5,1] 60 .Lendbloop: 61 j_s.d [blink] 62 stb r12,[r5,0] 63 END_CFI(memcpy) 64