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author | cvs2svn <> | 2013-06-05 11:57:40 +0400 |
---|---|---|
committer | cvs2svn <> | 2013-06-05 11:57:40 +0400 |
commit | 310a2eeef1d094d59ea9897be0ddb1b33869b885 (patch) | |
tree | 6c061f692be2a0be45d81351d4b9dfc06ec9fe9c /newlib/libc/machine/aarch64/memmove.S | |
parent | c82eac05c783fa1cb82eac9216dab1ed8aa482ae (diff) |
This commit was manufactured by cvs2svn to create tag 'cygwin-cygwin-1_7_19-release
1_7_19-release'.
Sprout from cygwin-64bit-premerge-branch 2013-04-22 17:11:23 UTC cvs2svn 'This commit was manufactured by cvs2svn to create branch 'cygwin-64bit-'
Cherrypick from master 2013-06-05 07:57:39 UTC Corinna Vinschen <corinna@vinschen.de> ' * faq-programming.xml: Convert url to refer to new flat faq.html file.':
COPYING.NEWLIB
ChangeLog
config.guess
config.sub
config/ChangeLog
config/bootstrap-asan.mk
config/dfp.m4
config/picflag.m4
include/ChangeLog
include/elf/ChangeLog
include/elf/aarch64.h
include/elf/common.h
include/elf/mips.h
include/elf/msp430.h
include/opcode/ChangeLog
include/opcode/avr.h
include/opcode/mips.h
include/opcode/msp430.h
newlib/ChangeLog
newlib/MAINTAINERS
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winsup/cygwin/x86_64.din
winsup/doc/.cvsignore
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winsup/doc/bodysnatcher.pl
winsup/doc/configure
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winsup/utils/ssp.c
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winsup/utils/tzset.c
winsup/utils/utils.xml
Delete:
COPYING3
COPYING3.LIB
config.rpath
configure.ac
ltgcc.m4
newlib/libc/machine/aarch64/Makefile.am
newlib/libc/machine/aarch64/Makefile.in
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newlib/libc/machine/aarch64/memcmp.S
newlib/libc/machine/aarch64/memcpy-stub.c
newlib/libc/machine/aarch64/memcpy.S
newlib/libc/machine/aarch64/memmove-stub.c
newlib/libc/machine/aarch64/memmove.S
newlib/libc/machine/aarch64/memset-stub.c
newlib/libc/machine/aarch64/memset.S
newlib/libc/machine/aarch64/setjmp.S
newlib/libc/machine/aarch64/strcmp-stub.c
newlib/libc/machine/aarch64/strcmp.S
newlib/libc/machine/aarch64/strlen-stub.c
newlib/libc/machine/aarch64/strlen.S
newlib/libc/machine/aarch64/strncmp-stub.c
newlib/libc/machine/aarch64/strncmp.S
newlib/libc/machine/aarch64/strnlen-stub.c
newlib/libc/machine/aarch64/strnlen.S
newlib/libc/machine/epiphany/Makefile.am
newlib/libc/machine/epiphany/Makefile.in
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newlib/libc/machine/epiphany/machine/stdlib.h
newlib/libc/machine/epiphany/setjmp.S
newlib/libc/machine/powerpc/times.c
newlib/libc/sys/epiphany/Makefile.am
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newlib/libc/sys/epiphany/aclocal.m4
newlib/libc/sys/epiphany/configure
newlib/libc/sys/epiphany/configure.in
newlib/libc/sys/epiphany/e_printf.c
newlib/libm/machine/aarch64/Makefile.am
newlib/libm/machine/aarch64/Makefile.in
newlib/libm/machine/aarch64/aclocal.m4
newlib/libm/machine/aarch64/configure
newlib/libm/machine/aarch64/configure.in
newlib/libm/machine/aarch64/s_ceil.c
newlib/libm/machine/aarch64/s_floor.c
newlib/libm/machine/aarch64/s_fma.c
newlib/libm/machine/aarch64/s_fmax.c
newlib/libm/machine/aarch64/s_fmin.c
newlib/libm/machine/aarch64/s_llrint.c
newlib/libm/machine/aarch64/s_llround.c
newlib/libm/machine/aarch64/s_lrint.c
newlib/libm/machine/aarch64/s_lround.c
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newlib/libm/machine/aarch64/sf_trunc.c
winsup/cygwin/cygwin.din
winsup/cygwin/cygwin.sc
winsup/doc/cygserver.sgml
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winsup/doc/setup2.sgml
winsup/doc/textbinary.sgml
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winsup/utils/utils.sgml
Diffstat (limited to 'newlib/libc/machine/aarch64/memmove.S')
-rw-r--r-- | newlib/libc/machine/aarch64/memmove.S | 329 |
1 files changed, 0 insertions, 329 deletions
diff --git a/newlib/libc/machine/aarch64/memmove.S b/newlib/libc/machine/aarch64/memmove.S deleted file mode 100644 index 8cb91f099..000000000 --- a/newlib/libc/machine/aarch64/memmove.S +++ /dev/null @@ -1,329 +0,0 @@ -/* Copyright (c) 2013, Linaro Limited - All rights reserved. - - Redistribution and use in source and binary forms, with or without - modification, are permitted provided that the following conditions are met: - * Redistributions of source code must retain the above copyright - notice, this list of conditions and the following disclaimer. - * Redistributions in binary form must reproduce the above copyright - notice, this list of conditions and the following disclaimer in the - documentation and/or other materials provided with the distribution. - * Neither the name of the Linaro nor the - names of its contributors may be used to endorse or promote products - derived from this software without specific prior written permission. - - THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ - -#if (defined (__OPTIMIZE_SIZE__) || defined (PREFER_SIZE_OVER_SPEED)) -/* See memmove-stub.c */ -#else - -/* Assumptions: - * - * ARMv8-a, AArch64 - * Unaligned accesses - */ - - .macro def_fn f p2align=0 - .text - .p2align \p2align - .global \f - .type \f, %function -\f: - .endm - -/* Parameters and result. */ -#define dstin x0 -#define src x1 -#define count x2 -#define tmp1 x3 -#define tmp1w w3 -#define tmp2 x4 -#define tmp2w w4 -#define tmp3 x5 -#define tmp3w w5 -#define dst x6 - -#define A_l x7 -#define A_h x8 -#define B_l x9 -#define B_h x10 -#define C_l x11 -#define C_h x12 -#define D_l x13 -#define D_h x14 - -def_fn memmove, 6 - cmp dstin, src - b.lo .Ldownwards - add tmp1, src, count - cmp dstin, tmp1 - b.hs memcpy /* No overlap. */ - - /* Upwards move with potential overlap. - * Need to move from the tail backwards. SRC and DST point one - * byte beyond the remaining data to move. */ - add dst, dstin, count - add src, src, count - cmp count, #64 - b.ge .Lmov_not_short_up - - /* Deal with small moves quickly by dropping straight into the - * exit block. */ -.Ltail63up: - /* Move up to 48 bytes of data. At this point we only need the - * bottom 6 bits of count to be accurate. */ - ands tmp1, count, #0x30 - b.eq .Ltail15up - sub dst, dst, tmp1 - sub src, src, tmp1 - cmp tmp1w, #0x20 - b.eq 1f - b.lt 2f - ldp A_l, A_h, [src, #32] - stp A_l, A_h, [dst, #32] -1: - ldp A_l, A_h, [src, #16] - stp A_l, A_h, [dst, #16] -2: - ldp A_l, A_h, [src] - stp A_l, A_h, [dst] -.Ltail15up: - /* Move up to 15 bytes of data. Does not assume additional data - * being moved. */ - tbz count, #3, 1f - ldr tmp1, [src, #-8]! - str tmp1, [dst, #-8]! -1: - tbz count, #2, 1f - ldr tmp1w, [src, #-4]! - str tmp1w, [dst, #-4]! -1: - tbz count, #1, 1f - ldrh tmp1w, [src, #-2]! - strh tmp1w, [dst, #-2]! -1: - tbz count, #0, 1f - ldrb tmp1w, [src, #-1] - strb tmp1w, [dst, #-1] -1: - ret - -.Lmov_not_short_up: - /* We don't much care about the alignment of DST, but we want SRC - * to be 128-bit (16 byte) aligned so that we don't cross cache line - * boundaries on both loads and stores. */ - ands tmp2, src, #15 /* Bytes to reach alignment. */ - b.eq 2f - sub count, count, tmp2 - /* Move enough data to reach alignment; unlike memcpy, we have to - * be aware of the overlap, which means we can't move data twice. */ - tbz tmp2, #3, 1f - ldr tmp1, [src, #-8]! - str tmp1, [dst, #-8]! -1: - tbz tmp2, #2, 1f - ldr tmp1w, [src, #-4]! - str tmp1w, [dst, #-4]! -1: - tbz tmp2, #1, 1f - ldrh tmp1w, [src, #-2]! - strh tmp1w, [dst, #-2]! -1: - tbz tmp2, #0, 1f - ldrb tmp1w, [src, #-1]! - strb tmp1w, [dst, #-1]! -1: - - /* There may be less than 63 bytes to go now. */ - cmp count, #63 - b.le .Ltail63up -2: - subs count, count, #128 - b.ge .Lmov_body_large_up - /* Less than 128 bytes to move, so handle 64 here and then jump - * to the tail. */ - ldp A_l, A_h, [src, #-64]! - ldp B_l, B_h, [src, #16] - ldp C_l, C_h, [src, #32] - ldp D_l, D_h, [src, #48] - stp A_l, A_h, [dst, #-64]! - stp B_l, B_h, [dst, #16] - stp C_l, C_h, [dst, #32] - stp D_l, D_h, [dst, #48] - tst count, #0x3f - b.ne .Ltail63up - ret - - /* Critical loop. Start at a new Icache line boundary. Assuming - * 64 bytes per line this ensures the entire loop is in one line. */ - .p2align 6 -.Lmov_body_large_up: - /* There are at least 128 bytes to move. */ - ldp A_l, A_h, [src, #-16] - ldp B_l, B_h, [src, #-32] - ldp C_l, C_h, [src, #-48] - ldp D_l, D_h, [src, #-64]! -1: - stp A_l, A_h, [dst, #-16] - ldp A_l, A_h, [src, #-16] - stp B_l, B_h, [dst, #-32] - ldp B_l, B_h, [src, #-32] - stp C_l, C_h, [dst, #-48] - ldp C_l, C_h, [src, #-48] - stp D_l, D_h, [dst, #-64]! - ldp D_l, D_h, [src, #-64]! - subs count, count, #64 - b.ge 1b - stp A_l, A_h, [dst, #-16] - stp B_l, B_h, [dst, #-32] - stp C_l, C_h, [dst, #-48] - stp D_l, D_h, [dst, #-64]! - tst count, #0x3f - b.ne .Ltail63up - ret - - -.Ldownwards: - /* For a downwards move we can safely use memcpy provided that - * DST is more than 16 bytes away from SRC. */ - sub tmp1, src, #16 - cmp dstin, tmp1 - b.ls memcpy /* May overlap, but not critically. */ - - mov dst, dstin /* Preserve DSTIN for return value. */ - cmp count, #64 - b.ge .Lmov_not_short_down - - /* Deal with small moves quickly by dropping straight into the - * exit block. */ -.Ltail63down: - /* Move up to 48 bytes of data. At this point we only need the - * bottom 6 bits of count to be accurate. */ - ands tmp1, count, #0x30 - b.eq .Ltail15down - add dst, dst, tmp1 - add src, src, tmp1 - cmp tmp1w, #0x20 - b.eq 1f - b.lt 2f - ldp A_l, A_h, [src, #-48] - stp A_l, A_h, [dst, #-48] -1: - ldp A_l, A_h, [src, #-32] - stp A_l, A_h, [dst, #-32] -2: - ldp A_l, A_h, [src, #-16] - stp A_l, A_h, [dst, #-16] -.Ltail15down: - /* Move up to 15 bytes of data. Does not assume additional data - being moved. */ - tbz count, #3, 1f - ldr tmp1, [src], #8 - str tmp1, [dst], #8 -1: - tbz count, #2, 1f - ldr tmp1w, [src], #4 - str tmp1w, [dst], #4 -1: - tbz count, #1, 1f - ldrh tmp1w, [src], #2 - strh tmp1w, [dst], #2 -1: - tbz count, #0, 1f - ldrb tmp1w, [src] - strb tmp1w, [dst] -1: - ret - -.Lmov_not_short_down: - /* We don't much care about the alignment of DST, but we want SRC - * to be 128-bit (16 byte) aligned so that we don't cross cache line - * boundaries on both loads and stores. */ - neg tmp2, src - ands tmp2, tmp2, #15 /* Bytes to reach alignment. */ - b.eq 2f - sub count, count, tmp2 - /* Move enough data to reach alignment; unlike memcpy, we have to - * be aware of the overlap, which means we can't move data twice. */ - tbz tmp2, #3, 1f - ldr tmp1, [src], #8 - str tmp1, [dst], #8 -1: - tbz tmp2, #2, 1f - ldr tmp1w, [src], #4 - str tmp1w, [dst], #4 -1: - tbz tmp2, #1, 1f - ldrh tmp1w, [src], #2 - strh tmp1w, [dst], #2 -1: - tbz tmp2, #0, 1f - ldrb tmp1w, [src], #1 - strb tmp1w, [dst], #1 -1: - - /* There may be less than 63 bytes to go now. */ - cmp count, #63 - b.le .Ltail63down -2: - subs count, count, #128 - b.ge .Lmov_body_large_down - /* Less than 128 bytes to move, so handle 64 here and then jump - * to the tail. */ - ldp A_l, A_h, [src] - ldp B_l, B_h, [src, #16] - ldp C_l, C_h, [src, #32] - ldp D_l, D_h, [src, #48] - stp A_l, A_h, [dst] - stp B_l, B_h, [dst, #16] - stp C_l, C_h, [dst, #32] - stp D_l, D_h, [dst, #48] - tst count, #0x3f - add src, src, #64 - add dst, dst, #64 - b.ne .Ltail63down - ret - - /* Critical loop. Start at a new cache line boundary. Assuming - * 64 bytes per line this ensures the entire loop is in one line. */ - .p2align 6 -.Lmov_body_large_down: - /* There are at least 128 bytes to move. */ - ldp A_l, A_h, [src, #0] - sub dst, dst, #16 /* Pre-bias. */ - ldp B_l, B_h, [src, #16] - ldp C_l, C_h, [src, #32] - ldp D_l, D_h, [src, #48]! /* src += 64 - Pre-bias. */ -1: - stp A_l, A_h, [dst, #16] - ldp A_l, A_h, [src, #16] - stp B_l, B_h, [dst, #32] - ldp B_l, B_h, [src, #32] - stp C_l, C_h, [dst, #48] - ldp C_l, C_h, [src, #48] - stp D_l, D_h, [dst, #64]! - ldp D_l, D_h, [src, #64]! - subs count, count, #64 - b.ge 1b - stp A_l, A_h, [dst, #16] - stp B_l, B_h, [dst, #32] - stp C_l, C_h, [dst, #48] - stp D_l, D_h, [dst, #64] - add src, src, #16 - add dst, dst, #64 + 16 - tst count, #0x3f - b.ne .Ltail63down - ret - .size memmove, . - memmove -#endif |