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 VG |
10 | |
| 11 | #define SMALL 7 /* Must be at least 6 to deal with alignment/loop issues. */ | |
| 12 | ||
| ec7ac6af | 13 | ENTRY(memset) |
| 5210d1e6 VG |
14 | mov_s r4,r0 |
| 15 | or r12,r0,r2 | |
| 16 | bmsk.f r12,r12,1 | |
| 17 | extb_s r1,r1 | |
| 18 | asl r3,r1,8 | |
| 19 | beq.d .Laligned | |
| 20 | or_s r1,r1,r3 | |
| 21 | brls r2,SMALL,.Ltiny | |
| 22 | add r3,r2,r0 | |
| 23 | stb r1,[r3,-1] | |
| 24 | bclr_s r3,r3,0 | |
| 25 | stw r1,[r3,-2] | |
| 26 | bmsk.f r12,r0,1 | |
| 27 | add_s r2,r2,r12 | |
| 28 | sub.ne r2,r2,4 | |
| 29 | stb.ab r1,[r4,1] | |
| 30 | and r4,r4,-2 | |
| 31 | stw.ab r1,[r4,2] | |
| 32 | and r4,r4,-4 | |
| 33 | .Laligned: ; This code address should be aligned for speed. | |
| 34 | asl r3,r1,16 | |
| 35 | lsr.f lp_count,r2,2 | |
| 36 | or_s r1,r1,r3 | |
| 37 | lpne .Loop_end | |
| 38 | st.ab r1,[r4,4] | |
| 39 | .Loop_end: | |
| 40 | j_s [blink] | |
| 41 | ||
| 42 | .balign 4 | |
| 43 | .Ltiny: | |
| 44 | mov.f lp_count,r2 | |
| 45 | lpne .Ltiny_end | |
| 46 | stb.ab r1,[r4,1] | |
| 47 | .Ltiny_end: | |
| 48 | j_s [blink] | |
| ec7ac6af | 49 | END(memset) |
| 5210d1e6 VG |
50 | |
| 51 | ; memzero: @r0 = mem, @r1 = size_t | |
| 52 | ; memset: @r0 = mem, @r1 = char, @r2 = size_t | |
| 53 | ||
| ec7ac6af | 54 | ENTRY(memzero) |
| 5210d1e6 VG |
55 | ; adjust bzero args to memset args |
| 56 | mov r2, r1 | |
| 57 | mov r1, 0 | |
| 58 | b memset ;tail call so need to tinker with blink | |
| ec7ac6af | 59 | END(memzero) |