projects / people / ms / u-boot.git / blame
| Commit | Line | Data |
|---|---|---|
| 22723828 AB |
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 | #define SMALL 7 /* Must be at least 6 to deal with alignment/loop issues. */ | |
| 8 | ||
| 9 | .global memset | |
| 10 | .align 4 | |
| 11 | memset: | |
| 12 | mov_s %r4, %r0 | |
| 13 | or %r12, %r0, %r2 | |
| 14 | bmsk.f %r12, %r12, 1 | |
| 15 | extb_s %r1, %r1 | |
| 16 | asl %r3, %r1, 8 | |
| 17 | beq.d .Laligned | |
| 18 | or_s %r1, %r1, %r3 | |
| 19 | brls %r2, SMALL, .Ltiny | |
| 20 | add %r3, %r2, %r0 | |
| 21 | stb %r1, [%r3, -1] | |
| 22 | bclr_s %r3, %r3, 0 | |
| 23 | stw %r1, [%r3, -2] | |
| 24 | bmsk.f %r12, %r0, 1 | |
| 25 | add_s %r2, %r2, %r12 | |
| 26 | sub.ne %r2, %r2, 4 | |
| 27 | stb.ab %r1, [%r4, 1] | |
| 28 | and %r4, %r4, -2 | |
| 29 | stw.ab %r1, [%r4, 2] | |
| 30 | and %r4, %r4, -4 | |
| 31 | ||
| 32 | .balign 4 | |
| 33 | .Laligned: | |
| 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] | |
| 49 | ||
| 50 | /* | |
| 51 | * memzero: @r0 = mem, @r1 = size_t | |
| 52 | * memset: @r0 = mem, @r1 = char, @r2 = size_t | |
| 53 | */ | |
| 54 | ||
| 55 | .global memzero | |
| 56 | .align 4 | |
| 57 | memzero: | |
| 58 | /* adjust bzero args to memset args */ | |
| 59 | mov %r2, %r1 | |
| 60 | mov %r1, 0 | |
| 61 | /* tail call so need to tinker with blink */ | |
| 62 | b memset |