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| author | Alexey Brodkin <Alexey.Brodkin@synopsys.com> | 2017-08-18 01:25:25 +0300 |
|---|---|---|
| committer | Waldemar Brodkorb <wbx@uclibc-ng.org> | 2017-08-20 12:53:17 +0200 |
| commit | 26cc89d99cc9d783859eb9d38e067fad5d6bbb60 (patch) | |
| tree | bb2f9a637c0f492eeb66465e975aa26f6207eb3c /libc/string/arc/arcv2/memset.S | |
| parent | d9f7022736fd429c6c62c93441804dc87900ed6f (diff) | |
arc: Merge ARCv2 string routines in generic ARC .S files
In cde74b83f9b2 "ARC: remove special CFLAGS/LDFLAGS handling" we
got rid of CONFIG_ARC_CPU_HS which was used to select ARCv2-specific
implementation of optimized string routines. So now ARCv2-tuned
memset/memcpy/strcmp are not used, instead those for ARC700 used for
both ARC700 and ARCHS.
Without uClibc config option we may only tell which CPU type we're
targeting by built-in defines of GCC. I.e. no more conditional file
inclusion in Makefiles. That leaves us only one option - merge both
implementations in 1 file and use ifdefs.
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Diffstat (limited to 'libc/string/arc/arcv2/memset.S')
| -rw-r--r-- | libc/string/arc/arcv2/memset.S | 115 |
1 files changed, 0 insertions, 115 deletions
diff --git a/libc/string/arc/arcv2/memset.S b/libc/string/arc/arcv2/memset.S deleted file mode 100644 index 343cfaf81..000000000 --- a/libc/string/arc/arcv2/memset.S +++ /dev/null @@ -1,115 +0,0 @@ - -/* - * Copyright (C) 2014-15 Synopsys, Inc. (www.synopsys.com) - * - * Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball. - */ - -#include <features.h> -#include <sysdep.h> - -#ifdef DONT_USE_PREALLOC -#define PREWRITE(A,B) prefetchw [(A),(B)] -#else -#define PREWRITE(A,B) prealloc [(A),(B)] -#endif - -ENTRY(memset) - prefetchw [r0] ; Prefetch the write location - mov.f 0, r2 -;;; if size is zero - jz.d [blink] - mov r3, r0 ; don't clobber ret val - -;;; if length < 8 - brls.d.nt r2, 8, .Lsmallchunk - mov.f lp_count,r2 - - and.f r4, r0, 0x03 - rsub lp_count, r4, 4 - lpnz @.Laligndestination - ;; LOOP BEGIN - stb.ab r1, [r3,1] - sub r2, r2, 1 -.Laligndestination: - -;;; Destination is aligned - and r1, r1, 0xFF - asl r4, r1, 8 - or r4, r4, r1 - asl r5, r4, 16 - or r5, r5, r4 - mov r4, r5 - - sub3 lp_count, r2, 8 - cmp r2, 64 - bmsk.hi r2, r2, 5 - mov.ls lp_count, 0 - add3.hi r2, r2, 8 - -;;; Convert len to Dwords, unfold x8 - lsr.f lp_count, lp_count, 6 - lpnz @.Lset64bytes - ;; LOOP START - PREWRITE(r3, 64) ;Prefetch the next write location -#if defined(__LL64__) || defined(__ARC_LL64__) - std.ab r4, [r3, 8] - std.ab r4, [r3, 8] - std.ab r4, [r3, 8] - std.ab r4, [r3, 8] - std.ab r4, [r3, 8] - std.ab r4, [r3, 8] - std.ab r4, [r3, 8] - std.ab r4, [r3, 8] -#else - st.ab r4, [r3, 4] - st.ab r4, [r3, 4] - st.ab r4, [r3, 4] - st.ab r4, [r3, 4] - st.ab r4, [r3, 4] - st.ab r4, [r3, 4] - st.ab r4, [r3, 4] - st.ab r4, [r3, 4] - st.ab r4, [r3, 4] - st.ab r4, [r3, 4] - st.ab r4, [r3, 4] - st.ab r4, [r3, 4] - st.ab r4, [r3, 4] - st.ab r4, [r3, 4] - st.ab r4, [r3, 4] - st.ab r4, [r3, 4] -#endif -.Lset64bytes: - - lsr.f lp_count, r2, 5 ;Last remaining max 124 bytes - lpnz .Lset32bytes - ;; LOOP START - prefetchw [r3, 32] ;Prefetch the next write location -#if defined(__LL64__) || defined(__ARC_LL64__) - std.ab r4, [r3, 8] - std.ab r4, [r3, 8] - std.ab r4, [r3, 8] - std.ab r4, [r3, 8] -#else - st.ab r4, [r3, 4] - st.ab r4, [r3, 4] - st.ab r4, [r3, 4] - st.ab r4, [r3, 4] - st.ab r4, [r3, 4] - st.ab r4, [r3, 4] - st.ab r4, [r3, 4] - st.ab r4, [r3, 4] -#endif -.Lset32bytes: - - and.f lp_count, r2, 0x1F ;Last remaining 31 bytes -.Lsmallchunk: - lpnz .Lcopy3bytes - ;; LOOP START - stb.ab r1, [r3, 1] -.Lcopy3bytes: - - j [blink] - -END(memset) -libc_hidden_def(memset) |