projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 5210d1e6 VG |
1 | /* |
| 2 | * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.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 version 2 as | |
| 6 | * published by the Free Software Foundation. | |
| 7 | */ | |
| 8 | ||
| ec7ac6af | 9 | #include <linux/linkage.h> |
| 5210d1e6 | 10 | |
| ec7ac6af | 11 | ENTRY(memcpy) |
| 5210d1e6 VG |
12 | or r3,r0,r1 |
| 13 | asl_s r3,r3,30 | |
| 14 | mov_s r5,r0 | |
| 15 | brls.d r2,r3,.Lcopy_bytewise | |
| 16 | sub.f r3,r2,1 | |
| 17 | ld_s r12,[r1,0] | |
| 18 | asr.f lp_count,r3,3 | |
| 19 | bbit0.d r3,2,.Lnox4 | |
| 20 | bmsk_s r2,r2,1 | |
| 21 | st.ab r12,[r5,4] | |
| 22 | ld.a r12,[r1,4] | |
| 23 | .Lnox4: | |
| 24 | lppnz .Lendloop | |
| 25 | ld_s r3,[r1,4] | |
| 26 | st.ab r12,[r5,4] | |
| 27 | ld.a r12,[r1,8] | |
| 28 | st.ab r3,[r5,4] | |
| 29 | .Lendloop: | |
| 30 | breq r2,0,.Last_store | |
| 31 | ld r3,[r5,0] | |
| 32 | #ifdef __LITTLE_ENDIAN__ | |
| 33 | add3 r2,-1,r2 | |
| 34 | ; uses long immediate | |
| 35 | xor_s r12,r12,r3 | |
| 36 | bmsk r12,r12,r2 | |
| 37 | xor_s r12,r12,r3 | |
| 38 | #else /* BIG ENDIAN */ | |
| 39 | sub3 r2,31,r2 | |
| 40 | ; uses long immediate | |
| 41 | xor_s r3,r3,r12 | |
| 42 | bmsk r3,r3,r2 | |
| 43 | xor_s r12,r12,r3 | |
| 44 | #endif /* ENDIAN */ | |
| 45 | .Last_store: | |
| 46 | j_s.d [blink] | |
| 47 | st r12,[r5,0] | |
| 48 | ||
| 49 | .balign 4 | |
| 50 | .Lcopy_bytewise: | |
| 51 | jcs [blink] | |
| 52 | ldb_s r12,[r1,0] | |
| 53 | lsr.f lp_count,r3 | |
| 54 | bhs_s .Lnox1 | |
| 55 | stb.ab r12,[r5,1] | |
| 56 | ldb.a r12,[r1,1] | |
| 57 | .Lnox1: | |
| 58 | lppnz .Lendbloop | |
| 59 | ldb_s r3,[r1,1] | |
| 60 | stb.ab r12,[r5,1] | |
| 61 | ldb.a r12,[r1,2] | |
| 62 | stb.ab r3,[r5,1] | |
| 63 | .Lendbloop: | |
| 64 | j_s.d [blink] | |
| 65 | stb r12,[r5,0] | |
| ec7ac6af | 66 | END(memcpy) |