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authorcvs2svn <>2013-06-05 11:57:40 +0400
committercvs2svn <>2013-06-05 11:57:40 +0400
commit310a2eeef1d094d59ea9897be0ddb1b33869b885 (patch)
tree6c061f692be2a0be45d81351d4b9dfc06ec9fe9c /newlib/libc/machine/aarch64/memmove.S
parentc82eac05c783fa1cb82eac9216dab1ed8aa482ae (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 newlib/configure newlib/configure.host newlib/configure.in newlib/libc/configure newlib/libc/configure.in newlib/libc/ctype/ctype_.c newlib/libc/ctype/isalnum.c newlib/libc/ctype/isalpha.c newlib/libc/ctype/isblank.c newlib/libc/ctype/iscntrl.c newlib/libc/ctype/isdigit.c newlib/libc/ctype/islower.c newlib/libc/ctype/isprint.c newlib/libc/ctype/ispunct.c newlib/libc/ctype/isxdigit.c newlib/libc/include/machine/ieeefp.h newlib/libc/include/machine/setjmp.h newlib/libc/include/reent.h newlib/libc/include/sys/cdefs.h newlib/libc/include/sys/config.h newlib/libc/include/sys/features.h newlib/libc/include/sys/reent.h newlib/libc/include/sys/stat.h newlib/libc/libc.texinfo newlib/libc/machine/arm/Makefile.am newlib/libc/machine/arm/Makefile.in newlib/libc/machine/arm/memcpy-armv7a.S newlib/libc/machine/arm/memcpy-armv7m.S newlib/libc/machine/arm/memcpy-stub.c newlib/libc/machine/arm/memcpy.S newlib/libc/machine/arm/strcmp.S newlib/libc/machine/configure newlib/libc/machine/configure.in newlib/libc/machine/powerpc/Makefile.am newlib/libc/machine/powerpc/Makefile.in newlib/libc/reent/reent.c newlib/libc/stdio/fgetc.c newlib/libc/stdio/fgetwc.c newlib/libc/stdio/fgetws.c newlib/libc/stdio/findfp.c newlib/libc/stdio/fputc.c newlib/libc/stdio/fputwc.c newlib/libc/stdio/fputws.c newlib/libc/stdio/getc.c newlib/libc/stdio/getchar.c newlib/libc/stdio/local.h newlib/libc/stdio/putc.c newlib/libc/stdio/putchar.c newlib/libc/stdio/scanf.c newlib/libc/stdio/setvbuf.c newlib/libc/stdio/ungetwc.c newlib/libc/stdio/vfscanf.c newlib/libc/stdio/vfwscanf.c newlib/libc/stdio/viprintf.c newlib/libc/stdio/viscanf.c newlib/libc/stdio/vprintf.c newlib/libc/stdio/vscanf.c newlib/libc/stdio/vwprintf.c newlib/libc/stdio/vwscanf.c newlib/libc/stdio/wscanf.c newlib/libc/stdlib/Makefile.am newlib/libc/stdlib/Makefile.in newlib/libc/stdlib/__atexit.c newlib/libc/stdlib/__call_atexit.c newlib/libc/stdlib/ecvtbuf.c newlib/libc/stdlib/mblen.c newlib/libc/stdlib/mbrlen.c newlib/libc/stdlib/mbrtowc.c newlib/libc/stdlib/mbtowc.c newlib/libc/stdlib/nano-mallocr.c newlib/libc/stdlib/rand.c newlib/libc/stdlib/strtod.c newlib/libc/stdlib/wcrtomb.c newlib/libc/stdlib/wctob.c newlib/libc/stdlib/wctomb.c newlib/libc/string/strtok.c newlib/libc/time/asctime.c newlib/libc/time/gmtime.c newlib/libc/time/lcltime.c newlib/libm/libm.texinfo winsup/cygserver/ChangeLog winsup/cygserver/ChangeLog.64bit winsup/cygserver/Makefile.in winsup/cygserver/bsd_helper.cc winsup/cygserver/bsd_helper.h winsup/cygserver/bsd_log.cc winsup/cygserver/bsd_log.h winsup/cygserver/bsd_mutex.cc winsup/cygserver/client.cc winsup/cygserver/cygserver.cc winsup/cygserver/msg.cc winsup/cygserver/process.h winsup/cygserver/sem.cc winsup/cygserver/shm.cc winsup/cygserver/sysv_shm.cc winsup/cygserver/threaded_queue.h winsup/cygwin/ChangeLog winsup/cygwin/ChangeLog.64bit winsup/cygwin/Makefile.in winsup/cygwin/aclocal.m4 winsup/cygwin/advapi32.cc winsup/cygwin/autoload.cc winsup/cygwin/automode.c winsup/cygwin/binmode.c winsup/cygwin/child_info.h winsup/cygwin/common.din winsup/cygwin/configure winsup/cygwin/configure.ac winsup/cygwin/cpuid.h winsup/cygwin/cygerrno.h winsup/cygwin/cygheap.cc winsup/cygwin/cygheap.h winsup/cygwin/cygmagic winsup/cygwin/cygmalloc.h winsup/cygwin/cygserver.h winsup/cygwin/cygserver_ipc.h winsup/cygwin/cygthread.cc winsup/cygwin/cygtls.cc winsup/cygwin/cygtls.h winsup/cygwin/cygwin.sc.in winsup/cygwin/dcrt0.cc winsup/cygwin/debug.h winsup/cygwin/devices.cc winsup/cygwin/devices.h winsup/cygwin/devices.in winsup/cygwin/dir.cc winsup/cygwin/dlfcn.cc winsup/cygwin/dll_init.cc winsup/cygwin/dll_init.h winsup/cygwin/dtable.cc winsup/cygwin/environ.cc winsup/cygwin/environ.h winsup/cygwin/errno.cc winsup/cygwin/exception.h winsup/cygwin/exceptions.cc winsup/cygwin/external.cc winsup/cygwin/fcntl.cc winsup/cygwin/fenv.cc winsup/cygwin/fhandler.cc winsup/cygwin/fhandler.h winsup/cygwin/fhandler_clipboard.cc winsup/cygwin/fhandler_console.cc winsup/cygwin/fhandler_dev.cc winsup/cygwin/fhandler_disk_file.cc winsup/cygwin/fhandler_dsp.cc winsup/cygwin/fhandler_fifo.cc winsup/cygwin/fhandler_floppy.cc winsup/cygwin/fhandler_mailslot.cc winsup/cygwin/fhandler_mem.cc winsup/cygwin/fhandler_netdrive.cc winsup/cygwin/fhandler_proc.cc winsup/cygwin/fhandler_process.cc winsup/cygwin/fhandler_procnet.cc winsup/cygwin/fhandler_procsys.cc winsup/cygwin/fhandler_procsysvipc.cc winsup/cygwin/fhandler_random.cc winsup/cygwin/fhandler_raw.cc winsup/cygwin/fhandler_registry.cc winsup/cygwin/fhandler_serial.cc winsup/cygwin/fhandler_socket.cc winsup/cygwin/fhandler_tape.cc winsup/cygwin/fhandler_termios.cc winsup/cygwin/fhandler_tty.cc winsup/cygwin/fhandler_virtual.cc winsup/cygwin/fhandler_virtual.h winsup/cygwin/fhandler_windows.cc winsup/cygwin/fhandler_zero.cc winsup/cygwin/flock.cc winsup/cygwin/fork.cc winsup/cygwin/gendef winsup/cygwin/gentls_offsets winsup/cygwin/glob.cc winsup/cygwin/globals.cc winsup/cygwin/grp.cc winsup/cygwin/heap.cc winsup/cygwin/hookapi.cc winsup/cygwin/i686.din winsup/cygwin/include/a.out.h winsup/cygwin/include/asm/byteorder.h winsup/cygwin/include/bits/wordsize.h winsup/cygwin/include/cygwin/acl.h winsup/cygwin/include/cygwin/config.h winsup/cygwin/include/cygwin/cygwin_dll.h 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winsup/cygwin/ipc.cc winsup/cygwin/kernel32.cc winsup/cygwin/lc_msg.h winsup/cygwin/lib/_cygwin_crt0_common.cc winsup/cygwin/lib/crt0.h winsup/cygwin/lib/cygwin_attach_dll.c winsup/cygwin/lib/premain0.c winsup/cygwin/lib/premain1.c winsup/cygwin/lib/premain2.c winsup/cygwin/lib/premain3.c winsup/cygwin/libc/arc4random.cc winsup/cygwin/libc/base64.c winsup/cygwin/libc/bsdlib.cc winsup/cygwin/libc/fts.c winsup/cygwin/libc/ftw.c winsup/cygwin/libc/inet_network.c winsup/cygwin/libc/minires-os-if.c winsup/cygwin/libc/minires.c winsup/cygwin/libc/nftw.c winsup/cygwin/libc/rcmd.cc winsup/cygwin/libc/rexec.cc winsup/cygwin/libstdcxx_wrapper.cc winsup/cygwin/localtime.cc winsup/cygwin/malloc_wrapper.cc winsup/cygwin/miscfuncs.cc winsup/cygwin/mkimport winsup/cygwin/mktemp.cc winsup/cygwin/mmap.cc winsup/cygwin/mount.cc winsup/cygwin/mount.h winsup/cygwin/msg.cc winsup/cygwin/mtinfo.h winsup/cygwin/net.cc winsup/cygwin/netdb.cc winsup/cygwin/nfs.h winsup/cygwin/nlsfuncs.cc winsup/cygwin/ntdll.h winsup/cygwin/ntea.cc winsup/cygwin/passwd.cc winsup/cygwin/path.cc winsup/cygwin/path.h winsup/cygwin/perprocess.h winsup/cygwin/pinfo.cc winsup/cygwin/pinfo.h winsup/cygwin/pipe.cc winsup/cygwin/poll.cc winsup/cygwin/posix.sgml winsup/cygwin/posix_ipc.cc winsup/cygwin/profil.c winsup/cygwin/profil.h winsup/cygwin/pseudo-reloc.cc winsup/cygwin/pwdgrp.h winsup/cygwin/regex/engine.c winsup/cygwin/regex/regcomp.c winsup/cygwin/registry.cc winsup/cygwin/regparm.h winsup/cygwin/release/1.7.19 winsup/cygwin/resource.cc winsup/cygwin/sched.cc winsup/cygwin/sec_acl.cc winsup/cygwin/sec_auth.cc winsup/cygwin/sec_helper.cc winsup/cygwin/security.cc winsup/cygwin/security.h winsup/cygwin/select.cc winsup/cygwin/select.h winsup/cygwin/sem.cc winsup/cygwin/shared.cc winsup/cygwin/shared_info.h winsup/cygwin/shm.cc winsup/cygwin/signal.cc winsup/cygwin/sigproc.cc winsup/cygwin/sigproc.h winsup/cygwin/smallprint.cc winsup/cygwin/spawn.cc winsup/cygwin/speclib winsup/cygwin/spinlock.h winsup/cygwin/strace.cc winsup/cygwin/strfuncs.cc winsup/cygwin/strsig.cc winsup/cygwin/sync.cc winsup/cygwin/sync.h winsup/cygwin/syscalls.cc winsup/cygwin/sysconf.cc winsup/cygwin/syslog.cc winsup/cygwin/termios.cc winsup/cygwin/textmode.c winsup/cygwin/textreadmode.c winsup/cygwin/thread.cc winsup/cygwin/thread.h winsup/cygwin/timer.cc winsup/cygwin/times.cc winsup/cygwin/tlsoffsets.h winsup/cygwin/tlsoffsets64.h winsup/cygwin/tty.cc winsup/cygwin/tty.h winsup/cygwin/uinfo.cc winsup/cygwin/wait.cc winsup/cygwin/winbase.h winsup/cygwin/wincap.cc winsup/cygwin/wincap.h winsup/cygwin/window.cc winsup/cygwin/winlean.h winsup/cygwin/winsup.h winsup/cygwin/wow64.cc winsup/cygwin/wow64.h winsup/cygwin/x86_64.din winsup/doc/.cvsignore winsup/doc/ChangeLog winsup/doc/Makefile.in winsup/doc/Wishlist winsup/doc/bodysnatcher.pl winsup/doc/configure winsup/doc/configure.ac winsup/doc/cygserver.xml winsup/doc/cygwin-api.in.xml winsup/doc/cygwin-ug-net.xml winsup/doc/cygwin.xsl winsup/doc/cygwinenv.xml winsup/doc/dll.xml winsup/doc/effectively.xml winsup/doc/faq-api.xml winsup/doc/faq-copyright.xml winsup/doc/faq-programming.xml winsup/doc/faq-resources.xml winsup/doc/faq-setup.xml winsup/doc/faq-using.xml winsup/doc/faq-what.xml winsup/doc/faq.xml winsup/doc/filemodes.xml winsup/doc/gcc.xml winsup/doc/gdb.xml winsup/doc/highlights.xml winsup/doc/legal.xml winsup/doc/new-features.xml winsup/doc/ntsec.xml winsup/doc/ov-ex-unix.xml winsup/doc/ov-ex-win.xml winsup/doc/overview.xml winsup/doc/pathnames.xml winsup/doc/programming.xml winsup/doc/setup-env.xml winsup/doc/setup-files.xml winsup/doc/setup-locale.xml winsup/doc/setup-maxmem.xml winsup/doc/setup-net.xml winsup/doc/specialnames.xml winsup/doc/textbinary.xml winsup/doc/ug-info.xml winsup/doc/using.xml winsup/doc/windres.xml winsup/doc/xidepend winsup/lsaauth/ChangeLog winsup/lsaauth/ChangeLog.64bit winsup/lsaauth/Makefile.in winsup/lsaauth/configure winsup/lsaauth/configure.ac winsup/utils/ChangeLog winsup/utils/ChangeLog.64bit winsup/utils/Makefile.in winsup/utils/aclocal.m4 winsup/utils/configure winsup/utils/cygcheck.cc winsup/utils/dumper.cc winsup/utils/dumper.h winsup/utils/kill.cc winsup/utils/ldd.cc winsup/utils/locale.cc winsup/utils/mkgroup.c winsup/utils/mkpasswd.c winsup/utils/module_info.cc winsup/utils/mount.cc winsup/utils/parse_pe.cc winsup/utils/passwd.c winsup/utils/path.cc winsup/utils/ps.cc winsup/utils/regtool.cc winsup/utils/ssp.c winsup/utils/strace.cc 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 newlib/libc/machine/aarch64/aclocal.m4 newlib/libc/machine/aarch64/configure newlib/libc/machine/aarch64/configure.in newlib/libc/machine/aarch64/memcmp-stub.c 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 newlib/libc/machine/epiphany/aclocal.m4 newlib/libc/machine/epiphany/configure newlib/libc/machine/epiphany/configure.in 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 newlib/libc/sys/epiphany/Makefile.in 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 newlib/libm/machine/aarch64/s_nearbyint.c newlib/libm/machine/aarch64/s_rint.c newlib/libm/machine/aarch64/s_round.c newlib/libm/machine/aarch64/s_trunc.c newlib/libm/machine/aarch64/sf_ceil.c newlib/libm/machine/aarch64/sf_floor.c newlib/libm/machine/aarch64/sf_fma.c newlib/libm/machine/aarch64/sf_fmax.c newlib/libm/machine/aarch64/sf_fmin.c newlib/libm/machine/aarch64/sf_llrint.c newlib/libm/machine/aarch64/sf_llround.c newlib/libm/machine/aarch64/sf_lrint.c newlib/libm/machine/aarch64/sf_lround.c newlib/libm/machine/aarch64/sf_nearbyint.c newlib/libm/machine/aarch64/sf_rint.c newlib/libm/machine/aarch64/sf_round.c newlib/libm/machine/aarch64/sf_trunc.c winsup/cygwin/cygwin.din winsup/cygwin/cygwin.sc winsup/doc/cygserver.sgml winsup/doc/cygwin-api.in.sgml winsup/doc/cygwin-ug-net.in.sgml winsup/doc/cygwin-ug.in.sgml winsup/doc/cygwin.dsl winsup/doc/cygwinenv.sgml winsup/doc/dll.sgml winsup/doc/effectively.sgml winsup/doc/faq-sections.xml winsup/doc/filemodes.sgml winsup/doc/gcc.sgml winsup/doc/gdb.sgml winsup/doc/legal.sgml winsup/doc/new-features.sgml winsup/doc/ntsec.sgml winsup/doc/overview.sgml winsup/doc/overview2.sgml winsup/doc/pathnames.sgml winsup/doc/programming.sgml winsup/doc/setup-net.sgml winsup/doc/setup.sgml winsup/doc/setup2.sgml winsup/doc/textbinary.sgml winsup/doc/using.sgml winsup/doc/windres.sgml winsup/utils/utils.sgml
Diffstat (limited to 'newlib/libc/machine/aarch64/memmove.S')
-rw-r--r--newlib/libc/machine/aarch64/memmove.S329
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