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Add support for ARC to newlib 

newlib/ChangeLog:
2015-11-12  Anton Kolesov  <Anton.Kolesov@synopsys.com>

	* configure.host: Add ARC support.
	* libc/include/machine/setjmp.h: Likewise.
	* libc/machine/configure: Likewise.
	* libc/machine/configure.in: Likewise.
	* libc/machine/arc/Makefile.am: Likewise.
	* libc/machine/arc/Makefile.in: Likewise.
	* libc/machine/arc/aclocal.m4: Likewise.
	* libc/machine/arc/asm.h: Likewise.
	* libc/machine/arc/configure: Likewise.
	* libc/machine/arc/configure.in: Likewise.
	* libc/machine/arc/memcmp-bs-norm.S: Likewise.
	* libc/machine/arc/memcmp-stub.c: Likewise.
	* libc/machine/arc/memcmp.S: Likewise.
	* libc/machine/arc/memcpy-archs.S: Likewise.
	* libc/machine/arc/memcpy-bs.S: Likewise.
	* libc/machine/arc/memcpy-stub.c: Likewise.
	* libc/machine/arc/memcpy.S: Likewise.
	* libc/machine/arc/memset-archs.S: Likewise.
	* libc/machine/arc/memset-bs.S: Likewise.
	* libc/machine/arc/memset-stub.c: Likewise.
	* libc/machine/arc/memset.S: Likewise.
	* libc/machine/arc/setjmp.S: Likewise.
	* libc/machine/arc/strchr-bs-norm.S: Likewise.
	* libc/machine/arc/strchr-bs.S: Likewise.
	* libc/machine/arc/strchr-stub.c: Likewise.
	* libc/machine/arc/strchr.S: Likewise.
	* libc/machine/arc/strcmp-archs.S: Likewise.
	* libc/machine/arc/strcmp-stub.c: Likewise.
	* libc/machine/arc/strcmp.S: Likewise.
	* libc/machine/arc/strcpy-bs-arc600.S: Likewise.
	* libc/machine/arc/strcpy-bs.S: Likewise.
	* libc/machine/arc/strcpy-stub.c: Likewise.
	* libc/machine/arc/strcpy.S: Likewise.
	* libc/machine/arc/strlen-bs-norm.S: Likewise.
	* libc/machine/arc/strlen-bs.S: Likewise.
	* libc/machine/arc/strlen-stub.c: Likewise.
	* libc/machine/arc/strlen.S: Likewise.
	* libc/machine/arc/strncpy-bs.S: Likewise.
	* libc/machine/arc/strncpy-stub.c: Likewise.
	* libc/machine/arc/strncpy.S: Likewise.
This commit is contained in:
Anton Kolesov 2015-10-23 21:24:50 +03:00 committed by Corinna Vinschen
parent acdfcb0a0a
commit c0a99f0293
41 changed files with 10054 additions and 6 deletions
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43
newlib/ChangeLog
View File

@ -1,3 +1,46 @@
2015-11-12 Anton Kolesov <Anton.Kolesov@synopsys.com>
* configure.host: Add ARC support.
* libc/include/machine/setjmp.h: Likewise.
* libc/machine/configure: Likewise.
* libc/machine/configure.in: Likewise.
* libc/machine/arc/Makefile.am: Likewise.
* libc/machine/arc/Makefile.in: Likewise.
* libc/machine/arc/aclocal.m4: Likewise.
* libc/machine/arc/asm.h: Likewise.
* libc/machine/arc/configure: Likewise.
* libc/machine/arc/configure.in: Likewise.
* libc/machine/arc/memcmp-bs-norm.S: Likewise.
* libc/machine/arc/memcmp-stub.c: Likewise.
* libc/machine/arc/memcmp.S: Likewise.
* libc/machine/arc/memcpy-archs.S: Likewise.
* libc/machine/arc/memcpy-bs.S: Likewise.
* libc/machine/arc/memcpy-stub.c: Likewise.
* libc/machine/arc/memcpy.S: Likewise.
* libc/machine/arc/memset-archs.S: Likewise.
* libc/machine/arc/memset-bs.S: Likewise.
* libc/machine/arc/memset-stub.c: Likewise.
* libc/machine/arc/memset.S: Likewise.
* libc/machine/arc/setjmp.S: Likewise.
* libc/machine/arc/strchr-bs-norm.S: Likewise.
* libc/machine/arc/strchr-bs.S: Likewise.
* libc/machine/arc/strchr-stub.c: Likewise.
* libc/machine/arc/strchr.S: Likewise.
* libc/machine/arc/strcmp-archs.S: Likewise.
* libc/machine/arc/strcmp-stub.c: Likewise.
* libc/machine/arc/strcmp.S: Likewise.
* libc/machine/arc/strcpy-bs-arc600.S: Likewise.
* libc/machine/arc/strcpy-bs.S: Likewise.
* libc/machine/arc/strcpy-stub.c: Likewise.
* libc/machine/arc/strcpy.S: Likewise.
* libc/machine/arc/strlen-bs-norm.S: Likewise.
* libc/machine/arc/strlen-bs.S: Likewise.
* libc/machine/arc/strlen-stub.c: Likewise.
* libc/machine/arc/strlen.S: Likewise.
* libc/machine/arc/strncpy-bs.S: Likewise.
* libc/machine/arc/strncpy-stub.c: Likewise.
* libc/machine/arc/strncpy.S: Likewise.
2015-11-12 Anton Kolesov <Anton.Kolesov@synopsys.com>
* configure.host: Remove ARC system.

10
newlib/configure.host
View File

@ -100,8 +100,8 @@ case "${host_cpu}" in
machine_dir=aarch64
libm_machine_dir=aarch64
;;
arc)
machine_dir=
arc*)
machine_dir=arc
;;
arm*)
machine_dir=arm
@ -611,8 +611,9 @@ case "${host}" in
default_newlib_io_long_long="yes"
syscall_dir=syscalls
;;
arc-*-*)
arc*-*-*)
syscall_dir=syscalls
default_newlib_io_long_long="yes"
;;
arm*-*-pe)
syscall_dir=syscalls
@ -631,9 +632,6 @@ case "${host}" in
newlib_cflags="${newlib_cflags} -DARM_RDI_MONITOR"
fi
;;
arc*)
newlib_cflags="${newlib_cflags} -DREENTRANT_SYSCALLS_PROVIDED"
;;
avr*)
newlib_cflags="${newlib_cflags} -DNO_EXEC -DSMALL_MEMORY -DMISSING_SYSCALL_NAMES"
;;

4
newlib/libc/include/machine/setjmp.h
View File

@ -262,6 +262,10 @@ _BEGIN_STD_C
#define _JBLEN 16
#endif
#ifdef __arc__
#define _JBLEN 25 /* r13-r30,blink,lp_count,lp_start,lp_end,mlo,mhi,status32 */
#endif
#ifdef __MMIX__
/* Using a layout compatible with GCC's built-in. */
#define _JBLEN 5

48
newlib/libc/machine/arc/Makefile.am Normal file
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@ -0,0 +1,48 @@
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pdf:
install-pdf:

637
newlib/libc/machine/arc/Makefile.in Normal file
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@ -0,0 +1,637 @@
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# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
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# AM_MISSING_PROG(NAME, PROGRAM)
# ------------------------------
AC_DEFUN([AM_MISSING_PROG],
[AC_REQUIRE([AM_MISSING_HAS_RUN])
$1=${$1-"${am_missing_run}$2"}
AC_SUBST($1)])
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# Copyright (C) 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
#
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
# AM_PROG_MKDIR_P
# ---------------
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dnl Automake 1.8 to 1.9.6 used to define mkdir_p. We now use MKDIR_P,
dnl while keeping a definition of mkdir_p for backward compatibility.
dnl @MKDIR_P@ is magic: AC_OUTPUT adjusts its value for each Makefile.
dnl However we cannot define mkdir_p as $(MKDIR_P) for the sake of
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dnl MKDIR_P).
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# Helper functions for option handling. -*- Autoconf -*-
# Copyright (C) 2001, 2002, 2003, 2005, 2008 Free Software Foundation, Inc.
#
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
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# Execute IF-SET if OPTION is set, IF-NOT-SET otherwise.
AC_DEFUN([_AM_IF_OPTION],
[m4_ifset(_AM_MANGLE_OPTION([$1]), [$2], [$3])])
# Check to make sure that the build environment is sane. -*- Autoconf -*-
# Copyright (C) 1996, 1997, 2000, 2001, 2003, 2005, 2008
# Free Software Foundation, Inc.
#
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
# serial 5
# AM_SANITY_CHECK
# ---------------
AC_DEFUN([AM_SANITY_CHECK],
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# Just in case
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echo timestamp > conftest.file
# Reject unsafe characters in $srcdir or the absolute working directory
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# directory).
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set X `ls -Lt "$srcdir/configure" conftest.file 2> /dev/null`
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# -L didn't work.
set X `ls -t "$srcdir/configure" conftest.file`
fi
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# happened. Such a system could not be considered "sane".
AC_MSG_ERROR([ls -t appears to fail. Make sure there is not a broken
alias in your environment])
fi
test "$[2]" = conftest.file
)
then
# Ok.
:
else
AC_MSG_ERROR([newly created file is older than distributed files!
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AC_MSG_RESULT(yes)])
# Copyright (C) 2001, 2003, 2005 Free Software Foundation, Inc.
#
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
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# AM_PROG_INSTALL_STRIP
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# Copyright (C) 2006, 2008 Free Software Foundation, Inc.
#
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
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# _AM_SUBST_NOTMAKE(VARIABLE)
# ---------------------------
# Prevent Automake from outputting VARIABLE = @VARIABLE@ in Makefile.in.
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# Check how to create a tarball. -*- Autoconf -*-
# Copyright (C) 2004, 2005 Free Software Foundation, Inc.
#
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
# serial 2
# _AM_PROG_TAR(FORMAT)
# --------------------
# Check how to create a tarball in format FORMAT.
# FORMAT should be one of `v7', `ustar', or `pax'.
#
# Substitute a variable $(am__tar) that is a command
# writing to stdout a FORMAT-tarball containing the directory
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AM_MISSING_PROG([AMTAR], [tar])
m4_if([$1], [v7],
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[m4_case([$1], [ustar],, [pax],,
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m4_include([../../../acinclude.m4])

64
newlib/libc/machine/arc/asm.h Normal file
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#ifndef ARC_NEWLIB_ASM_H
#define ARC_NEWLIB_ASM_H
/*
Copyright (c) 2015, Synopsys, Inc. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1) Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2) 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.
3) Neither the name of the Synopsys, Inc., 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.
*/
#define _ENTRY(name) \
.text ` .balign 4 ` .globl name ` name:
#define FUNC(name) .type name,@function
#define ENDFUNC0(name) .Lfe_##name: .size name,.Lfe_##name-name
#define ENDFUNC(name) ENDFUNC0 (name)
#define ENTRY(name) _ENTRY (name) ` FUNC (name)
#define add_l add
#define bcc_l bcc
#define bclr_l bclr
#define beq_l beq
#define bic_l bic
#define b_l b
#define bne_l bne
#define breq_l breq
#define brne_l brne
#define j_l j
#define ldb_l ldb
#define ld_l ld
#define mov_l mov
#define or_l or
#define st_l st
#define stb_l stb
#define sub_l sub
#define tst_l tst
#define extb_l extb
#define bcc_s bhs_s
#endif /* ARC_NEWLIB_ASM_H */

4692
newlib/libc/machine/arc/configure vendored Executable file
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13
newlib/libc/machine/arc/configure.in Normal file
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@ -0,0 +1,13 @@
dnl This is the newlib/libc/machine/arc configure.in file.
dnl Process this file with autoconf to produce a configure script.
AC_PREREQ(2.59)
AC_INIT([newlib],[NEWLIB_VERSION])
AC_CONFIG_SRCDIR([Makefile.am])
dnl Can't be done in NEWLIB_CONFIGURE because that confuses automake.
AC_CONFIG_AUX_DIR(../../../..)
NEWLIB_CONFIGURE(../../..)
AC_OUTPUT(Makefile)

223
newlib/libc/machine/arc/memcmp-bs-norm.S Normal file
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@ -0,0 +1,223 @@
/*
Copyright (c) 2015, Synopsys, Inc. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1) Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2) 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.
3) Neither the name of the Synopsys, Inc., 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.
*/
/* This implementation is optimized for performance. For code size a generic
implementation of this function from newlib/libc/string/memcmp.c will be
used. */
#if !defined (__OPTIMIZE_SIZE__) && !defined (PREFER_SIZE_OVER_SPEED)
#include "asm.h"
#if !defined (__ARC601__) && defined (__ARC_NORM__) && defined (__Xbarrel_shifter)
#ifdef __LITTLE_ENDIAN__
#define WORD2 r2
#define SHIFT r3
#else /* BIG ENDIAN */
#define WORD2 r3
#define SHIFT r2
#endif
ENTRY (memcmp)
or r12,r0,r1
asl_s r12,r12,30
#if defined (__ARC700__) || defined (__EM__) || defined (__HS__)
sub_l r3,r2,1
brls r2,r12,.Lbytewise
#else
brls.d r2,r12,.Lbytewise
sub_s r3,r2,1
#endif
ld r4,[r0,0]
ld r5,[r1,0]
lsr.f lp_count,r3,3
#ifdef __EM__
/* A branch can't be the last instruction in a zero overhead loop.
So we move the branch to the start of the loop, duplicate it
after the end, and set up r12 so that the branch isn't taken
initially. */
mov_s r12,WORD2
lpne .Loop_end
brne WORD2,r12,.Lodd
ld WORD2,[r0,4]
#else
lpne .Loop_end
ld_s WORD2,[r0,4]
#endif
ld_s r12,[r1,4]
brne r4,r5,.Leven
ld.a r4,[r0,8]
ld.a r5,[r1,8]
#ifdef __EM__
.Loop_end:
brne WORD2,r12,.Lodd
#else
brne WORD2,r12,.Lodd
#ifdef __HS__
nop
#endif
.Loop_end:
#endif
asl_s SHIFT,SHIFT,3
bcc_s .Last_cmp
brne r4,r5,.Leven
ld r4,[r0,4]
ld r5,[r1,4]
#ifdef __LITTLE_ENDIAN__
#if defined (__ARC700__) || defined (__EM__) || defined (__HS__)
nop_s
; one more load latency cycle
.Last_cmp:
xor r0,r4,r5
bset r0,r0,SHIFT
sub_s r1,r0,1
bic_s r1,r1,r0
norm r1,r1
b.d .Leven_cmp
and r1,r1,24
.Leven:
xor r0,r4,r5
sub_s r1,r0,1
bic_s r1,r1,r0
norm r1,r1
; slow track insn
and r1,r1,24
.Leven_cmp:
asl r2,r4,r1
asl r12,r5,r1
lsr_s r2,r2,1
lsr_s r12,r12,1
j_s.d [blink]
sub r0,r2,r12
.balign 4
.Lodd:
xor r0,WORD2,r12
sub_s r1,r0,1
bic_s r1,r1,r0
norm r1,r1
; slow track insn
and r1,r1,24
asl_s r2,r2,r1
asl_s r12,r12,r1
lsr_s r2,r2,1
lsr_s r12,r12,1
j_s.d [blink]
sub r0,r2,r12
#else /* !__ARC700__ */
.balign 4
.Last_cmp:
xor r0,r4,r5
b.d .Leven_cmp
bset r0,r0,SHIFT
.Lodd:
mov_s r4,WORD2
mov_s r5,r12
.Leven:
xor r0,r4,r5
.Leven_cmp:
mov_s r1,0x80808080
; uses long immediate
sub_s r12,r0,1
bic_s r0,r0,r12
sub r0,r1,r0
xor_s r0,r0,r1
and r1,r5,r0
and r0,r4,r0
xor.f 0,r0,r1
sub_s r0,r0,r1
j_s.d [blink]
mov.mi r0,r1
#endif /* !__ARC700__ */
#else /* BIG ENDIAN */
.Last_cmp:
neg_s SHIFT,SHIFT
lsr r4,r4,SHIFT
lsr r5,r5,SHIFT
; slow track insn
.Leven:
sub.f r0,r4,r5
mov.ne r0,1
j_s.d [blink]
bset.cs r0,r0,31
.Lodd:
cmp_s WORD2,r12
#if defined (__ARC700__) || defined (__EM__) || defined (__HS__)
mov_s r0,1
j_s.d [blink]
bset.cs r0,r0,31
#else /* !__ARC700__ */
j_s.d [blink]
rrc r0,2
#endif /* !__ARC700__ */
#endif /* ENDIAN */
.balign 4
.Lbytewise:
breq r2,0,.Lnil
ldb r4,[r0,0]
ldb r5,[r1,0]
lsr.f lp_count,r3
#ifdef __EM__
mov r12,r3
lpne .Lbyte_end
brne r3,r12,.Lbyte_odd
#else
lpne .Lbyte_end
#endif
ldb_s r3,[r0,1]
ldb_l r12,[r1,1]
brne r4,r5,.Lbyte_even
ldb.a r4,[r0,2]
ldb.a r5,[r1,2]
#ifdef __EM__
.Lbyte_end:
brne r3,r12,.Lbyte_odd
#else
brne r3,r12,.Lbyte_odd
#ifdef __HS__
nop
#endif
.Lbyte_end:
#endif
bcc_l .Lbyte_even
brne r4,r5,.Lbyte_even
ldb_s r3,[r0,1]
ldb_s r12,[r1,1]
.Lbyte_odd:
j_s.d [blink]
sub r0,r3,r12
.Lbyte_even:
j_s.d [blink]
sub r0,r4,r5
.Lnil:
j_s.d [blink]
mov_l r0,0
ENDFUNC (memcmp)
#endif /* !__ARC601__ && __ARC_NORM__ && __Xbarrel_shifter */
#endif /* !__OPTIMIZE_SIZE__ && !PREFER_SIZE_OVER_SPEED */

36
newlib/libc/machine/arc/memcmp-stub.c Normal file
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@ -0,0 +1,36 @@
/*
Copyright (c) 2015, Synopsys, Inc. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1) Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2) 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.
3) Neither the name of the Synopsys, Inc., 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)
# include "../../string/memcmp.c"
#else
/* See memcmp-*.S. */
#endif

153
newlib/libc/machine/arc/memcmp.S Normal file
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@ -0,0 +1,153 @@
/*
Copyright (c) 2015, Synopsys, Inc. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1) Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2) 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.
3) Neither the name of the Synopsys, Inc., 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.
*/
/* This implementation is optimized for performance. For code size a generic
implementation of this function from newlib/libc/string/memcmp.c will be
used. */
#if !defined (__OPTIMIZE_SIZE__) && !defined (PREFER_SIZE_OVER_SPEED)
#include "asm.h"
#if defined (__ARC601__) || !defined (__ARC_NORM__) || !defined (__Xbarrel_shifter)
/* Addresses are unsigned, and at 0 is the vector table, so it's OK to assume
that we can subtract 8 from a source end address without underflow. */
ENTRY (memcmp)
or r12,r0,r1
tst r12,3
breq r2,0,.Lnil
add_s r3,r0,r2
/* This algorithm for big endian targets sometimes works incorrectly
when sources are aligned. To be precise the last step is omitted.
Just use a simple bytewise variant until the algorithm is reviewed
and fixed. */
#ifdef __LITTLE_ENDIAN__
bne_s .Lbytewise
#else /* BIG ENDIAN */
b_s .Lbytewise
#endif /* ENDIAN */
sub r6,r3,8
ld r4,[r0,0]
ld r5,[r1,0]
2:
brhs r0,r6,.Loop_end
ld_s r3,[r0,4]
ld_s r12,[r1,4]
brne r4,r5,.Leven
ld.a r4,[r0,8]
breq.d r3,r12,2b
ld.a r5,[r1,8]
#ifdef __LITTLE_ENDIAN__
mov_s r4,r3
b.d .Lodd
mov_s r5,r12
#else /* BIG ENDIAN */
cmp_s r3,r12
j_s.d [blink]
rrc r0,2
#endif /* ENDIAN */
.balign 4
.Loop_end:
sub r3,r0,r6
brhs r3,4,.Last_cmp
brne r4,r5,.Leven
ld r4,[r0,4]
ld r5,[r1,4]
#ifdef __LITTLE_ENDIAN__
.balign 4
.Last_cmp:
mov_l r0,24
add3 r2,r0,r2
xor r0,r4,r5
b.d .Leven_cmp
bset r0,r0,r2
.Lodd:
.Leven:
xor r0,r4,r5
.Leven_cmp:
mov_s r1,0x80808080
; uses long immediate
sub_s r12,r0,1
bic_s r0,r0,r12
sub r0,r1,r0
xor_s r0,r0,r1
and r1,r5,r0
and r0,r4,r0
#else /* BIG ENDIAN */
.Last_cmp:
mov_s r3,0
sub3 r2,r3,r2
sub_s r3,r3,1
bclr r3,r3,r2
add_l r3,r3,1
and r0,r4,r3
and r1,r5,r3
.Leven:
#endif /* ENDIAN */
xor.f 0,r0,r1
sub_s r0,r0,r1
j_s.d [blink]
mov.mi r0,r1
.balign 4
.Lbytewise:
ldb r4,[r0,0]
ldb r5,[r1,0]
sub r6,r3,2
3:
brhs r0,r6,.Lbyte_end
ldb_s r3,[r0,1]
ldb_s r12,[r1,1]
brne r4,r5,.Lbyte_even
ldb.a r4,[r0,2]
breq.d r3,r12,3b
ldb.a r5,[r1,2]
.Lbyte_odd:
j_s.d [blink]
sub r0,r3,r12
.balign 4
.Lbyte_end:
bbit1 r2,0,.Lbyte_even
brne r4,r5,.Lbyte_even
ldb r4,[r0,1]
ldb r5,[r1,1]
.Lbyte_even:
j_s.d [blink]
sub r0,r4,r5
.Lnil:
j_s.d [blink]
mov_s r0,0
ENDFUNC (memcmp)
#endif /* __ARC601__ || !__ARC_NORM__ || !__Xbarrel_shifter */
#endif /* !__OPTIMIZE_SIZE__ && !PREFER_SIZE_OVER_SPEED */

268
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/*
Copyright (c) 2015, Synopsys, Inc. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1) Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2) 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.
3) Neither the name of the Synopsys, Inc., 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.
*/
/* This implementation is optimized for performance. For code size a generic
implementation of this function from newlib/libc/string/memcpy.c will be
used. */
#if !defined (__OPTIMIZE_SIZE__) && !defined (PREFER_SIZE_OVER_SPEED)
#include "asm.h"
#if defined (__HS__)
#ifdef __LITTLE_ENDIAN__
# define SHIFT_1(RX,RY,IMM) asl RX, RY, IMM ; <<
# define SHIFT_2(RX,RY,IMM) lsr RX, RY, IMM ; >>
# define MERGE_1(RX,RY,IMM) asl RX, RY, IMM
# define MERGE_2(RX,RY,IMM)
# define EXTRACT_1(RX,RY,IMM) and RX, RY, 0xFFFF
# define EXTRACT_2(RX,RY,IMM) lsr RX, RY, IMM
#else
# define SHIFT_1(RX,RY,IMM) lsr RX, RY, IMM ; >>
# define SHIFT_2(RX,RY,IMM) asl RX, RY, IMM ; <<
# define MERGE_1(RX,RY,IMM) asl RX, RY, IMM ; <<
# define MERGE_2(RX,RY,IMM) asl RX, RY, IMM ; <<
# define EXTRACT_1(RX,RY,IMM) lsr RX, RY, IMM
# define EXTRACT_2(RX,RY,IMM) lsr RX, RY, 0x08
#endif
#ifdef __LL64__
# define PREFETCH_READ(RX) prefetch [RX, 56]
# define PREFETCH_WRITE(RX) prefetchw [RX, 64]
# define LOADX(DST,RX) ldd.ab DST, [RX, 8]
# define STOREX(SRC,RX) std.ab SRC, [RX, 8]
# define ZOLSHFT 5
# define ZOLAND 0x1F
#else
# define PREFETCH_READ(RX) prefetch [RX, 28]
# define PREFETCH_WRITE(RX) prefetchw [RX, 32]
# define LOADX(DST,RX) ld.ab DST, [RX, 4]
# define STOREX(SRC,RX) st.ab SRC, [RX, 4]
# define ZOLSHFT 4
# define ZOLAND 0xF
#endif
ENTRY (memcpy)
prefetch [r1] ; Prefetch the read location
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 size <= 8
cmp r2, 8
bls.d @.Lsmallchunk
mov.f lp_count, r2
and.f r4, r0, 0x03
rsub lp_count, r4, 4
lpnz @.Laligndestination
; LOOP BEGIN
ldb.ab r5, [r1,1]
sub r2, r2, 1
stb.ab r5, [r3,1]
.Laligndestination:
; Check the alignment of the source
and.f r4, r1, 0x03
bnz.d @.Lsourceunaligned
; CASE 0: Both source and destination are 32bit aligned
; Convert len to Dwords, unfold x4
lsr.f lp_count, r2, ZOLSHFT
lpnz @.Lcopy32_64bytes
; LOOP START
LOADX (r6, r1)
PREFETCH_READ (r1)
PREFETCH_WRITE (r3)
LOADX (r8, r1)
LOADX (r10, r1)
LOADX (r4, r1)
STOREX (r6, r3)
STOREX (r8, r3)
STOREX (r10, r3)
STOREX (r4, r3)
.Lcopy32_64bytes:
and.f lp_count, r2, ZOLAND ;Last remaining 31 bytes
.Lsmallchunk:
lpnz @.Lcopyremainingbytes
; LOOP START
ldb.ab r5, [r1,1]
stb.ab r5, [r3,1]
.Lcopyremainingbytes:
j [blink]
; END CASE 0
.Lsourceunaligned:
cmp r4, 2
beq.d @.LunalignedOffby2
sub r2, r2, 1
bhi.d @.LunalignedOffby3
ldb.ab r5, [r1, 1]
; CASE 1: The source is unaligned, off by 1
; Hence I need to read 1 byte for a 16bit alignment
; and 2bytes to reach 32bit alignment
ldh.ab r6, [r1, 2]
sub r2, r2, 2
; Convert to words, unfold x2
lsr.f lp_count, r2, 3
MERGE_1 (r6, r6, 8)
MERGE_2 (r5, r5, 24)
or r5, r5, r6
; Both src and dst are aligned
lpnz @.Lcopy8bytes_1
; LOOP START
ld.ab r6, [r1, 4]
prefetch [r1, 28] ;Prefetch the next read location
ld.ab r8, [r1,4]
prefetchw [r3, 32] ;Prefetch the next write location
SHIFT_1 (r7, r6, 24)
or r7, r7, r5
SHIFT_2 (r5, r6, 8)
SHIFT_1 (r9, r8, 24)
or r9, r9, r5
SHIFT_2 (r5, r8, 8)
st.ab r7, [r3, 4]
st.ab r9, [r3, 4]
.Lcopy8bytes_1:
; Write back the remaining 16bits
EXTRACT_1 (r6, r5, 16)
sth.ab r6, [r3, 2]
; Write back the remaining 8bits
EXTRACT_2 (r5, r5, 16)
stb.ab r5, [r3, 1]
and.f lp_count, r2, 0x07 ;Last 8bytes
lpnz @.Lcopybytewise_1
; LOOP START
ldb.ab r6, [r1,1]
stb.ab r6, [r3,1]
.Lcopybytewise_1:
j [blink]
.LunalignedOffby2:
; CASE 2: The source is unaligned, off by 2
ldh.ab r5, [r1, 2]
sub r2, r2, 1
; Both src and dst are aligned
; Convert to words, unfold x2
lsr.f lp_count, r2, 3
#ifdef __BIG_ENDIAN__
asl.nz r5, r5, 16
#endif
lpnz @.Lcopy8bytes_2
; LOOP START
ld.ab r6, [r1, 4]
prefetch [r1, 28] ;Prefetch the next read location
ld.ab r8, [r1,4]
prefetchw [r3, 32] ;Prefetch the next write location
SHIFT_1 (r7, r6, 16)
or r7, r7, r5
SHIFT_2 (r5, r6, 16)
SHIFT_1 (r9, r8, 16)
or r9, r9, r5
SHIFT_2 (r5, r8, 16)
st.ab r7, [r3, 4]
st.ab r9, [r3, 4]
.Lcopy8bytes_2:
#ifdef __BIG_ENDIAN__
lsr.nz r5, r5, 16
#endif
sth.ab r5, [r3, 2]
and.f lp_count, r2, 0x07 ;Last 8bytes
lpnz @.Lcopybytewise_2
; LOOP START
ldb.ab r6, [r1,1]
stb.ab r6, [r3,1]
.Lcopybytewise_2:
j [blink]
.LunalignedOffby3:
; CASE 3: The source is unaligned, off by 3
; Hence, I need to read 1byte for achieve the 32bit alignment
; Both src and dst are aligned
; Convert to words, unfold x2
lsr.f lp_count, r2, 3
#ifdef __BIG_ENDIAN__
asl.ne r5, r5, 24
#endif
lpnz @.Lcopy8bytes_3
; LOOP START
ld.ab r6, [r1, 4]
prefetch [r1, 28] ;Prefetch the next read location
ld.ab r8, [r1,4]
prefetchw [r3, 32] ;Prefetch the next write location
SHIFT_1 (r7, r6, 8)
or r7, r7, r5
SHIFT_2 (r5, r6, 24)
SHIFT_1 (r9, r8, 8)
or r9, r9, r5
SHIFT_2 (r5, r8, 24)
st.ab r7, [r3, 4]
st.ab r9, [r3, 4]
.Lcopy8bytes_3:
#ifdef __BIG_ENDIAN__
lsr.nz r5, r5, 24
#endif
stb.ab r5, [r3, 1]
and.f lp_count, r2, 0x07 ;Last 8bytes
lpnz @.Lcopybytewise_3
; LOOP START
ldb.ab r6, [r1,1]
stb.ab r6, [r3,1]
.Lcopybytewise_3:
j [blink]
ENDFUNC (memcpy)
#endif /* __HS__ */
#endif /* !__OPTIMIZE_SIZE__ && !PREFER_SIZE_OVER_SPEED */

103
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/*
Copyright (c) 2015, Synopsys, Inc. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1) Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2) 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.
3) Neither the name of the Synopsys, Inc., 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.
*/
/* This implementation is optimized for performance. For code size a generic
implementation of this function from newlib/libc/string/memcpy.c will be
used. */
#if !defined (__OPTIMIZE_SIZE__) && !defined (PREFER_SIZE_OVER_SPEED)
#include "asm.h"
#if !defined (__ARC601__) && !defined (__HS__) && defined (__Xbarrel_shifter)
/* Mostly optimized for ARC700, but not bad for ARC600 either. */
/* This memcpy implementation does not support objects of 1GB or larger -
the check for alignment does not work then. */
/* We assume that most sources and destinations are aligned, and
that also lengths are mostly a multiple of four, although to a lesser
extent. */
ENTRY (memcpy)
or r3,r0,r1
asl_s r3,r3,30
mov_s r5,r0
brls.d r2,r3,.Lcopy_bytewise
sub.f r3,r2,1
ld_s r12,[r1,0]
asr.f lp_count,r3,3
bbit0.d r3,2,.Lnox4
bmsk_s r2,r2,1
st.ab r12,[r5,4]
ld.a r12,[r1,4]
.Lnox4:
lppnz .Lendloop
ld_s r3,[r1,4]
st.ab r12,[r5,4]
ld.a r12,[r1,8]
st.ab r3,[r5,4]
.Lendloop:
breq_l r2,0,.Last_store
ld r3,[r5,0]
#ifdef __LITTLE_ENDIAN__
add3 r2,-1,r2
; uses long immediate
xor_s r12,r12,r3
bmsk r12,r12,r2
xor_s r12,r12,r3
#else /* BIG ENDIAN */
sub3 r2,31,r2
; uses long immediate
xor_s r3,r3,r12
bmsk r3,r3,r2
xor_s r12,r12,r3
#endif /* ENDIAN */
.Last_store:
j_s.d [blink]
st r12,[r5,0]
.balign 4
.Lcopy_bytewise:
jcs [blink]
ldb_s r12,[r1,0]
lsr.f lp_count,r3
bcc_s .Lnox1
stb.ab r12,[r5,1]
ldb.a r12,[r1,1]
.Lnox1:
lppnz .Lendbloop
ldb_s r3,[r1,1]
stb.ab r12,[r5,1]
ldb.a r12,[r1,2]
stb.ab r3,[r5,1]
.Lendbloop:
j_s.d [blink]
stb r12,[r5,0]
ENDFUNC (memcpy)
#endif /* !__ARC601__ && !__HS__ && __Xbarrel_shifter */
#endif /* !__OPTIMIZE_SIZE__ && !PREFER_SIZE_OVER_SPEED */

36
newlib/libc/machine/arc/memcpy-stub.c Normal file
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/*
Copyright (c) 2015, Synopsys, Inc. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1) Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2) 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.
3) Neither the name of the Synopsys, Inc., 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)
# include "../../string/memcpy.c"
#else
/* See memcpy-*.S. */
#endif

109
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/*
Copyright (c) 2015, Synopsys, Inc. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1) Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2) 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.
3) Neither the name of the Synopsys, Inc., 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.
*/
/* This implementation is optimized for performance. For code size a generic
implementation of this function from newlib/libc/string/memcpy.c will be
used. */
#if !defined (__OPTIMIZE_SIZE__) && !defined (PREFER_SIZE_OVER_SPEED)
#include "asm.h"
#if defined (__ARC601__) || (!defined (__Xbarrel_shifter) && !defined (__HS__))
/* Adapted from memcpy-bs.S. */
/* We assume that most sources and destinations are aligned, and
that also lengths are mostly a multiple of four, although to a lesser
extent. */
ENTRY (memcpy)
or r3,r0,r1
bmsk.f 0,r3,1
breq_s r2,0,.Lnil
mov_s r5,r0
bne.d .Lcopy_bytewise
add r6,r0,r2
sub_s r3,r2,1
ld_s r12,[r1,0]
bbit0.d r3,2,.Lnox4
sub r6,r6,8
st.ab r12,[r5,4]
ld.a r12,[r1,4]
.Lnox4:
brlo r2,9,.Lendloop
.Lnox4a:
ld_s r3,[r1,4]
st.ab r12,[r5,8]
ld.a r12,[r1,8]
brlo.d r5,r6,.Lnox4a
st r3,[r5,-4]
.Lendloop:
#ifdef __LITTLE_ENDIAN__
ld r3,[r5,0]
add3 r2,-1,r2
; uses long immediate
xor_s r12,r12,r3
bmsk r12,r12,r2
xor_s r12,r12,r3
#else /* BIG ENDIAN */
bmsk_s r2,r2,1
breq_s r2,0,.Last_store
ld r3,[r5,0]
sub3 r2,31,r2
; uses long immediate
xor_s r3,r3,r12
bmsk r3,r3,r2
xor_s r12,r12,r3
#endif /* ENDIAN */
.Last_store:
j_s.d [blink]
st r12,[r5,0]
.Lnil:
j_s [blink]
.balign 4
.Lcopy_bytewise:
ldb_s r12,[r1,0]
bbit1.d r2,0,.Lnox1
sub r6,r6,2
stb.ab r12,[r5,1]
ldb.a r12,[r1,1]
.Lnox1:
brlo r2,3,.Lendbloop
.Lnox1a:
ldb_s r3,[r1,1]
stb.ab r12,[r5,2]
ldb.a r12,[r1,2]
brlo.d r5,r6,.Lnox1a
stb r3,[r5,-1]
.Lendbloop:
j_s.d [blink]
stb r12,[r5,0]
ENDFUNC (memcpy)
#endif /* __ARC601__ || (!__Xbarrel_shifter && !__HS__) */
#endif /* !__OPTIMIZE_SIZE__ && !PREFER_SIZE_OVER_SPEED */

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/*
Copyright (c) 2015, Synopsys, Inc. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1) Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2) 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.
3) Neither the name of the Synopsys, Inc., 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.
*/
/* This implementation is optimized for performance. For code size a generic
implementation of this function from newlib/libc/string/memset.c will be
used. */
#if !defined (__OPTIMIZE_SIZE__) && !defined (PREFER_SIZE_OVER_SPEED)
#include "asm.h"
#ifdef __HS__
#ifdef USE_PREFETCH
#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
#ifdef __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
#ifdef __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]
ENDFUNC (memset)
#endif /* __HS__ */
#endif /* !__OPTIMIZE_SIZE__ && !PREFER_SIZE_OVER_SPEED */

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/*
Copyright (c) 2015, Synopsys, Inc. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1) Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2) 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.
3) Neither the name of the Synopsys, Inc., 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.
*/
/* This implementation is optimized for performance. For code size a generic
implementation of this function from newlib/libc/string/memset.c will be
used. */
#if !defined (__OPTIMIZE_SIZE__) && !defined (PREFER_SIZE_OVER_SPEED)
#include "asm.h"
/* ARC HS has it's own implementation of memset, yet we want this function
still to be compiled under "__dummy_memset" disguise, because strncpy
function uses __strncpy_bzero as a second entry point into memset. Would be
better to add __strncpy_bzero label to memset for ARC HS though, and even
better would be to avoid a second entry point into function. ARC HS always
has barrel-shifter, so this implementation will be always used for this
purpose. */
#if !defined (__ARC601__) && defined (__Xbarrel_shifter)
/* To deal with alignment/loop issues, SMALL must be at least 2. */
#define SMALL 7
.global __strncpy_bzero
.hidden __strncpy_bzero
/* __strncpy_bzero provides the following interface to strncpy:
r0: return value
r2: zeroing length
r3: zeroing start address
No attempt is made here for __strncpy_memset to speed up aligned
cases, because the copying of a string presumably leaves start address
and length alignment for the zeroing randomly distributed. */
#ifdef __HS__
ENTRY (__dummy_memset)
#else
ENTRY (memset)
#endif
#if !defined (__ARC700__) && !defined (__EM__)
#undef SMALL
#define SMALL 8 /* Even faster if aligned. */
brls.d r2,SMALL,.Ltiny
#endif
mov_s r3,r0
or r12,r0,r2
bmsk.f r12,r12,1
extb_s r1,r1
asl r12,r1,8
beq.d .Laligned
or_s r1,r1,r12
#if defined (__ARC700__) || defined (__EM__)
brls r2,SMALL,.Ltiny
#endif
.Lnot_tiny:
add_s r12,r2,r0
stb r1,[r12,-1]
bclr_l r12,r12,0
stw r1,[r12,-2]
bmsk.f r12,r3,1
add_s r2,r2,r12
sub.ne r2,r2,4
stb.ab r1,[r3,1]
bclr_s r3,r3,0
stw.ab r1,[r3,2]
bclr_s r3,r3,1
.Laligned: ; This code address should be aligned for speed.
#if defined (__ARC700__) || defined (__EM__)
asl r12,r1,16
lsr.f lp_count,r2,2
or_s r1,r1,r12
lpne .Loop_end
st.ab r1,[r3,4]
.Loop_end:
j_s [blink]
#else /* !__ARC700 */
lsr.f lp_count,r2,3
asl r12,r1,16
or_s r1,r1,r12
lpne .Loop_end
st.ab r1,[r3,4]
st.ab r1,[r3,4]
.Loop_end:
jcc [blink]
j_s.d [blink]
st_s r1,[r3]
#endif /* !__ARC700 */
#if defined (__ARC700__) || defined (__EM__)
.balign 4
__strncpy_bzero:
brhi.d r2,17,.Lnot_tiny
mov_l r1,0
.Ltiny:
mov.f lp_count,r2
lpne .Ltiny_end
stb.ab r1,[r3,1]
.Ltiny_end:
j_s [blink]
#else /* !__ARC700__ */
#if SMALL > 8
FIXME
#endif
.balign 4
__strncpy_bzero:
brhi.d r2,8,.Lnot_tiny
mov_s r1,0
.Ltiny:
sub_s r2,r2,11
sub1 r12,pcl,r2
j_s [r12]
stb_s r1,[r3,7]
stb_s r1,[r3,6]
stb_s r1,[r3,5]
stb_s r1,[r3,4]
stb_s r1,[r3,3]
stb_s r1,[r3,2]
stb_s r1,[r3,1]
stb_s r1,[r3]
j_s [blink]
#endif /* !__ARC700 */
#ifdef __HS__
ENDFUNC (__dummy_memset)
#else
ENDFUNC (memset)
#endif
#endif /* !__ARC601__ && __Xbarrel_shifter */
#endif /* !__OPTIMIZE_SIZE__ && !PREFER_SIZE_OVER_SPEED */

36
newlib/libc/machine/arc/memset-stub.c Normal file
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/*
Copyright (c) 2015, Synopsys, Inc. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1) Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2) 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.
3) Neither the name of the Synopsys, Inc., 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)
# include "../../string/memset.c"
#else
/* See memset-*.S. */
#endif

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/*
Copyright (c) 2015, Synopsys, Inc. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1) Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2) 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.
3) Neither the name of the Synopsys, Inc., 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.
*/
/* This implementation is optimized for performance. For code size a generic
implementation of this function from newlib/libc/string/memset.c will be
used. */
#if !defined (__OPTIMIZE_SIZE__) && !defined (PREFER_SIZE_OVER_SPEED)
#include "asm.h"
#if defined (__ARC601__) || (!defined (__Xbarrel_shifter) && !defined (__HS__))
/* To deal with alignment/loop issues, SMALL must be at least 2. */
#define SMALL 8 /* Even faster if aligned. */
.global __strncpy_bzero
.hidden __strncpy_bzero
/* __strncpy_bzero provides the following interface to strncpy:
r0: return value
r2: zeroing length
r3: zeroing start address
No attempt is made here for __strncpy_memset to speed up aligned
cases, because the copying of a string presumably leaves start address
and length alignment for the zeroing randomly distributed. */
ENTRY (memset)
brls.d r2,SMALL,.Ltiny
mov_s r3,r0
or r12,r0,r2
bmsk.f r12,r12,1
breq_s r1,0,.Lbzero
mov r4,0
stb.a r1,[sp,-4]
stb r1,[sp,1]
stb r1,[sp,2]
stb r1,[sp,3]
ld.ab r1,[sp,4]
.Lbzero:
beq.d .Laligned
.Lbzero2:
add r6,r2,r3
.Lnot_tiny:
stb r1,[r6,-1]
bclr r12,r6,0
stw r1,[r12,-2]
stb.ab r1,[r3,1]
bclr_s r3,r3,0
stw.ab r1,[r3,2]
bclr_s r3,r3,1
.Laligned: ; This code address should be aligned for speed.
sub r6,r6,8
brlo.d r6,r3,.Loop_end
sub r6,r6,8
3:
st_l r1,[r3,4]
brhs.d r6,r3,3b
st.ab r1,[r3,8]
.Loop_end:
bic r12,r6,3
j_s.d [blink]
st_s r1,[r12,12]
.balign 4
__strncpy_bzero:
brhi.d r2,8,.Lbzero2
mov_s r1,0
.Ltiny:
sub_s r2,r2,11
sub1 r12,pcl,r2
j_s [r12]
stb_s r1,[r3,7]
stb_s r1,[r3,6]
stb_s r1,[r3,5]
stb_s r1,[r3,4]
stb_s r1,[r3,3]
stb_s r1,[r3,2]
stb_s r1,[r3,1]
stb_s r1,[r3]
j_s [blink]
ENDFUNC (memset)
#endif /* __ARC601__ || (!__Xbarrel_shifter && !__HS__) */
#endif /* !__OPTIMIZE_SIZE__ && !PREFER_SIZE_OVER_SPEED */

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/*
Copyright (c) 2015, Synopsys, Inc. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1) Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2) 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.
3) Neither the name of the Synopsys, Inc., 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.
*/
/* ABI interface file
these are the stack mappings for the registers
as stored in the ABI for ARC */
.file "setjmp.S"
ABIr13 = 0
ABIr14 = ABIr13 + 4
ABIr15 = ABIr14 + 4
ABIr16 = ABIr15 + 4
ABIr17 = ABIr16 + 4
ABIr18 = ABIr17 + 4
ABIr19 = ABIr18 + 4
ABIr20 = ABIr19 + 4
ABIr21 = ABIr20 + 4
ABIr22 = ABIr21 + 4
ABIr23 = ABIr22 + 4
ABIr24 = ABIr23 + 4
ABIr25 = ABIr24 + 4
ABIr26 = ABIr25 + 4
ABIr27 = ABIr26 + 4
ABIr28 = ABIr27 + 4
ABIr29 = ABIr28 + 4
ABIr30 = ABIr29 + 4
ABIr31 = ABIr30 + 4
ABIlpc = ABIr31 + 4
ABIlps = ABIlpc + 4
ABIlpe = ABIlps + 4
ABIflg = ABIlpe + 4
ABImlo = ABIflg + 4
ABImhi = ABImlo + 4
.text
.align 4
.global setjmp
.type setjmp,@function
setjmp:
st r13, [r0, ABIr13]
st r14, [r0, ABIr14]
st r15, [r0, ABIr15]
st r16, [r0, ABIr16]
st r17, [r0, ABIr17]
st r18, [r0, ABIr18]
st r19, [r0, ABIr19]
st r20, [r0, ABIr20]
st r21, [r0, ABIr21]
st r22, [r0, ABIr22]
st r23, [r0, ABIr23]
st r24, [r0, ABIr24]
st r25, [r0, ABIr25]
st r26, [r0, ABIr26]
st r27, [r0, ABIr27]
st r28, [r0, ABIr28]
st r29, [r0, ABIr29]
st r30, [r0, ABIr30]
st blink, [r0, ABIr31]
st lp_count, [r0, ABIlpc]
lr r2, [lp_start]
lr r3, [lp_end]
st r2, [r0, ABIlps]
st r3, [r0, ABIlpe]
#if (!defined (__A7__) && !defined (__EM__) && !defined (__HS__))
; Till the configure changes are decided, and implemented, the code working on
; mlo/mhi and using mul64 should be disabled.
; st mlo, [r0, ABImlo]
; st mhi, [r0, ABImhi]
lr r2, [status32]
st r2, [r0, ABIflg]
#endif
j.d [blink]
mov r0,0
.Lfe1:
.size setjmp,.Lfe1-setjmp
.align 4
.global longjmp
.type longjmp,@function
longjmp:
; load registers
ld r13, [r0, ABIr13]
ld r14, [r0, ABIr14]
ld r15, [r0, ABIr15]
ld r16, [r0, ABIr16]
ld r17, [r0, ABIr17]
ld r18, [r0, ABIr18]
ld r19, [r0, ABIr19]
ld r20, [r0, ABIr20]
ld r21, [r0, ABIr21]
ld r22, [r0, ABIr22]
ld r23, [r0, ABIr23]
ld r24, [r0, ABIr24]
ld r25, [r0, ABIr25]
ld r26, [r0, ABIr26]
ld r27, [r0, ABIr27]
ld r28, [r0, ABIr28]
ld r3, [r0, ABIr29]
mov r29, r3
ld r3, [r0, ABIr30]
mov r30, r3
ld blink, [r0, ABIr31]
ld r3, [r0, ABIlpc]
mov lp_count, r3
ld r2, [r0, ABIlps]
ld r3, [r0, ABIlpe]
sr r2, [lp_start]
sr r3, [lp_end]
#if (!defined (__A7__) && !defined (__EM__) && !defined (__HS__))
ld r2, [r0, ABImlo]
ld r3, [r0, ABImhi]
; We do not support restoring of mulhi and mlo registers, yet.
; mulu64 0,r2,1 ; restores mlo
; mov 0,mlo ; force multiply to finish
; sr r3, [mulhi]
ld r2, [r0, ABIflg]
flag r2 ; restore "status32" register
#endif
mov.f r1, r1 ; to avoid return 0 from longjmp
mov.eq r1, 1
j.d [blink]
mov r0,r1
.Lfe2:
.size longjmp,.Lfe2-longjmp

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/*
Copyright (c) 2015, Synopsys, Inc. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1) Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2) 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.
3) Neither the name of the Synopsys, Inc., 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.
*/
/* This implementation is optimized for performance. For code size a generic
implementation of this function from newlib/libc/string/strchr.c will be
used. */
#if !defined (__OPTIMIZE_SIZE__) && !defined (PREFER_SIZE_OVER_SPEED)
/* ARC700 has a relatively long pipeline and branch prediction, so we want
to avoid branches that are hard to predict. On the other hand, the
presence of the norm instruction makes it easier to operate on whole
words branch-free. */
#include "asm.h"
#if (defined (__ARC700__) || defined (__EM__) || defined (__HS__)) \
&& defined (__ARC_NORM__) && defined (__Xbarrel_shifter)
ENTRY (strchr)
extb_s r1,r1
asl r5,r1,8
bmsk r2,r0,1
or r5,r5,r1
mov_s r3,0x01010101
breq.d r2,r0,.Laligned
asl r4,r5,16
sub_s r0,r0,r2
asl r7,r2,3
ld_s r2,[r0]
#ifdef __LITTLE_ENDIAN__
asl r7,r3,r7
#else
lsr r7,r3,r7
#endif
or r5,r5,r4
ror r4,r3
sub r12,r2,r7
bic_s r12,r12,r2
and r12,r12,r4
brne.d r12,0,.Lfound0_ua
xor r6,r2,r5
ld.a r2,[r0,4]
sub r12,r6,r7
bic r12,r12,r6
#ifdef __LITTLE_ENDIAN__
and r7,r12,r4
breq r7,0,.Loop ; For speed, we want this branch to be unaligned.
b_l .Lfound_char ; Likewise this one.
#else
and r12,r12,r4
breq_l r12,0,.Loop ; For speed, we want this branch to be unaligned.
lsr_s r12,r12,7
bic r2,r7,r6
b.d .Lfound_char_b
and_s r2,r2,r12
#endif
; /* We require this code address to be unaligned for speed... */
.Laligned:
ld_s r2,[r0]
or r5,r5,r4
ror r4,r3
; /* ... so that this code address is aligned, for itself and ... */
.Loop:
sub r12,r2,r3
bic_s r12,r12,r2
and r12,r12,r4
brne.d r12,0,.Lfound0
xor r6,r2,r5
ld.a r2,[r0,4]
sub r12,r6,r3
bic r12,r12,r6
and r7,r12,r4
breq r7,0,.Loop /* ... so that this branch is unaligned. */
; Found searched-for character. r0 has already advanced to next word.
#ifdef __LITTLE_ENDIAN__
/* We only need the information about the first matching byte
(i.e. the least significant matching byte) to be exact,
hence there is no problem with carry effects. */
.Lfound_char:
sub r3,r7,1
bic r3,r3,r7
norm r2,r3
sub_s r0,r0,1
asr_s r2,r2,3
j_l.d [blink]
sub_s r0,r0,r2
.balign 4
.Lfound0_ua:
mov_l r3,r7
.Lfound0:
sub r3,r6,r3
bic r3,r3,r6
and r2,r3,r4
or_s r12,r12,r2
sub_s r3,r12,1
bic_s r3,r3,r12
norm r3,r3
add_s r0,r0,3
asr_s r12,r3,3
asl.f 0,r2,r3
sub_s r0,r0,r12
j_s.d [blink]
mov.pl r0,0
#else /* BIG ENDIAN */
.Lfound_char:
lsr r7,r7,7
bic r2,r7,r6
.Lfound_char_b:
norm r2,r2
sub_s r0,r0,4
asr_s r2,r2,3
j_l.d [blink]
add_s r0,r0,r2
.Lfound0_ua:
mov_s r3,r7
.Lfound0:
asl_s r2,r2,7
or r7,r6,r4
bic_s r12,r12,r2
sub r2,r7,r3
or r2,r2,r6
bic r12,r2,r12
bic.f r3,r4,r12
norm r3,r3
add.pl r3,r3,1
asr_s r12,r3,3
asl.f 0,r2,r3
add_s r0,r0,r12
j_s.d [blink]
mov.mi r0,0
#endif /* ENDIAN */
ENDFUNC (strchr)
#endif /* (__ARC700__ || __EM__ || __HS__) && __ARC_NORM__ && __Xbarrel_shifter */
#endif /* !__OPTIMIZE_SIZE__ && !PREFER_SIZE_OVER_SPEED */

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/*
Copyright (c) 2015, Synopsys, Inc. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1) Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2) 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.
3) Neither the name of the Synopsys, Inc., 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.
*/
/* This implementation is optimized for performance. For code size a generic
implementation of this function from newlib/libc/string/strchr.c will be
used. */
#if !defined (__OPTIMIZE_SIZE__) && !defined (PREFER_SIZE_OVER_SPEED)
#include "asm.h"
/* In order to search for a zero in a W, we calculate
X := (W - 0x01010101) & ~W & 0x80808080;
In the little endian case:
If no byte in W is zero, X will be zero; otherwise, the least significant
byte of X which is nonzero indicates the least significant byte of W that
is zero.
In the big endian case:
X will be zero iff no byte in W is zero.
If X is nonzero, to find out which is the most significant zero byte
in W, we calculate:
Y := ~(((W | 0x80808080) - 0x01010101) | W) & 0x80808080;
Each byte in Y is 0x80 if the the corresponding byte in
W is zero, otherwise that byte of Y is 0. */
#if defined (__Xbarrel_shifter) && \
(defined (__ARC600__) || (!defined (__ARC_NORM__) && !defined (__ARC601__)))
ENTRY (strchr)
bmsk.f r2,r0,1
mov_s r3,0x01010101
extb_s r1,r1
asl r5,r1,8
or r5,r5,r1
beq.d .Laligned
asl r4,r5,16
sub_s r0,r0,r2
asl_s r2,r2,3
#ifdef __LITTLE_ENDIAN__
asl r7,r3,r2
#else
lsr r7,r3,r2
#endif
ld_s r2,[r0]
or r5,r5,r4
ror r4,r3
sub r12,r2,r7
bic_s r12,r12,r2
and r12,r12,r4
brne.d r12,0,.Lfound0_ua
xor r6,r2,r5
ld.a r2,[r0,4]
sub r12,r6,r7
bic r12,r12,r6
#ifdef __LITTLE_ENDIAN__
and.f r7,r12,r4
sub r12,r2,r3
bic_s r12,r12,r2
beq.d .Loop
and r12,r12,r4
b.d .Lfound_char_ua
btst r7,7
#else
and.f r8,r12,r4
sub r12,r2,r3
bic_s r12,r12,r2
beq.d .Loop
and r12,r12,r4
bic r12,r7,r6
asl_s r12,r12,7
and.f r2,r8,r12
b.d .Lfound_char_ua
sub_s r0,r0,4
#endif
.balign 4
.Laligned:
ld_s r2,[r0]
or r5,r5,r4
ror r4,r3
sub r12,r2,r3
bic_s r12,r12,r2
and r12,r12,r4
.Loop:
brne.d r12,0,.Lfound0
xor r6,r2,r5
ld.a r2,[r0,4]
sub r12,r6,r3
bic r12,r12,r6
and.f r7,r12,r4
sub r12,r2,r3
bic_s r12,r12,r2
beq.d .Loop
and r12,r12,r4
; Found searched-for character. r0 has already advanced to next word.
#ifdef __LITTLE_ENDIAN__
/* We only need the information about the first matching byte
(i.e. the least significant matching byte) to be exact,
hence there is no problem with carry effects. */
.Lfound_char:
btst r7,7
.Lfound_char_ua:
sub_s r0,r0,4
add.eq r0,r0,1
btst.eq r7,15
add.eq r0,r0,1
btst.eq r7,23
j_s.d [blink]
add.eq r0,r0,1
.balign 4
.Lfound0_ua:
mov_l r3,r7
.Lfound0:
sub r2,r6,r3
bic r2,r2,r6
and r2,r2,r4
or r3,r12,r2
sub_s r12,r3,1
xor_s r3,r3,r12
tst_s r2,r3
lsr r2,r3,31
lsr r12,r3,16
jeq.d [blink]
mov.eq r0,0
lsr r3,r3,8
sub_s r2,r2,r12
sub_s r2,r2,r3
bmsk_s r2,r2,1
j_s.d [blink]
add_s r0,r0,r2
#else /* BIG ENDIAN */
.Lfound_char:
asl r6,r6,7
sub_s r0,r0,4
bic.f r2,r7,r6
.Lfound_char_ua:
add.pl r0,r0,1
jmi.d [blink]
btst_s r2,23
add.eq r0,r0,1
btst.eq r2,15
j_s.d [blink]
add.eq r0,r0,1
; N.B. if we searched for a char zero and found it in the MSB,
; and ignored matches are identical, we will take the early exit
; like for an ordinary found zero - except for the extra stalls at jhi -
; but still compute the right result.
.Lfound0_ua:
mov_s r3,r7
.Lfound0:
asl_s r2,r2,7
or r7,r6,r4
bic_s r12,r12,r2
sub r2,r7,r3
or r2,r2,r6
bic r2,r4,r2
cmp r12,r2
mov.hi r0,0
btst.ls r2,31
jhi.d [blink]
add.eq r0,r0,1
btst.eq r2,23
add.eq r0,r0,1
btst.eq r2,15
j_s.d [blink]
add.eq r0,r0,1
#endif /* ENDIAN */
ENDFUNC (strchr)
#endif /* __Xbarrel_shifter && (__ARC600__ || (!__ARC_NORM__ && !__ARC601__)) */
#endif /* !__OPTIMIZE_SIZE__ && !PREFER_SIZE_OVER_SPEED */

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/*
Copyright (c) 2015, Synopsys, Inc. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1) Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2) 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.
3) Neither the name of the Synopsys, Inc., 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)
# include "../../string/strchr.c"
#else
/* See strchr-*.S. */
#endif

208
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/*
Copyright (c) 2015, Synopsys, Inc. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1) Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2) 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.
3) Neither the name of the Synopsys, Inc., 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.
*/
/* This implementation is optimized for performance. For code size a generic
implementation of this function from newlib/libc/string/strchr.c will be
used. */
#if !defined (__OPTIMIZE_SIZE__) && !defined (PREFER_SIZE_OVER_SPEED)
#include "asm.h"
/* In order to search for a zero in a W, we calculate
X := (W - 0x01010101) & ~W & 0x80808080;
In the little endian case:
If no byte in W is zero, X will be zero; otherwise, the least significant
byte of X which is nonzero indicates the least significant byte of W that
is zero.
In the big endian case:
X will be zero iff no byte in W is zero.
If X is nonzero, to find out which is the most significant zero byte
in W, we calculate:
Y := ~(((W | 0x80808080) - 0x01010101) | W) & 0x80808080;
Each byte in Y is 0x80 if the the corresponding byte in
W is zero, otherwise that byte of Y is 0. */
#if defined (__ARC601__) || !defined (__Xbarrel_shifter)
ENTRY (strchr)
bmsk.f r2,r0,1
mov_s r3,0x01010101
extb_s r1,r1
mov r8,0
add3 r5,r8,r1
add3 r5,r8,r5
add2 r5,r1,r5
add3 r4,r8,r5
add3 r4,r8,r4
add3 r4,r8,r4
add3 r4,r8,r4
beq.d .Laligned
add3 r4,r8,r4
sub_s r0,r0,r2
#ifdef __LITTLE_ENDIAN__
add3.f r2,-1,r2
bmsk r7,r3,r2
rsub.pl r7,r7,r3
#else
mov_s r12,31
sub3 r2,r12,r2
bmsk r7,r3,r2
#endif
ld_s r2,[r0]
add1 r5,r5,r4
ror r4,r3
sub r12,r2,r7
bic_s r12,r12,r2
and r12,r12,r4
brne.d r12,0,.Lfound0_ua
xor r6,r2,r5
ld.a r2,[r0,4]
sub r12,r6,r7
bic r12,r12,r6
#ifdef __LITTLE_ENDIAN__
and.f r7,r12,r4
sub r12,r2,r3
bic_s r12,r12,r2
beq.d .Loop
and r12,r12,r4
b.d .Lfound_char_ua
btst r7,7
#else
and.f r8,r12,r4
sub r12,r2,r3
bic_s r12,r12,r2
beq.d .Loop
and r12,r12,r4
bic r12,r7,r6
bic r2,r3,r12
sub1 r2,r3,r2
sub_s r0,r0,4
b.d .Lfound_char_ua
bic.f r2,r8,r2
#endif
.balign 4
.Laligned:
ld_s r2,[r0]
add1 r5,r5,r4
ror r4,r3
sub r12,r2,r3
bic_s r12,r12,r2
and r12,r12,r4
.Loop:
brne.d r12,0,.Lfound0
xor r6,r2,r5
ld.a r2,[r0,4]
sub r12,r6,r3
bic r12,r12,r6
and.f r7,r12,r4
sub r12,r2,r3
bic_s r12,r12,r2
beq.d .Loop
and r12,r12,r4
; Found searched-for character. r0 has already advanced to next word.
#ifdef __LITTLE_ENDIAN__
/* We only need the information about the first matching byte
(i.e. the least significant matching byte) to be exact,
hence there is no problem with carry effects. */
.Lfound_char:
btst r7,7
.Lfound_char_ua:
sub_s r0,r0,4
add.eq r0,r0,1
btst.eq r7,15
add.eq r0,r0,1
btst.eq r7,23
j_s.d [blink]
add.eq r0,r0,1
.balign 4
.Lfound0_ua:
mov_l r3,r7
.Lfound0:
sub r2,r6,r3
bic r2,r2,r6
and r2,r2,r4
or r3,r12,r2
sub_s r12,r3,1
xor_s r3,r3,r12
cmp 0xffff,r3
; cmp uses limm ; ARC600 would do: asl.f 0,r3,9
tst_s r2,r3
mov.eq r0,0
add.mi r0,r0,1
btst.ne r3,15
j_s.d [blink]
adc.ne r0,r0,1
#else /* BIG ENDIAN */
.Lfound_char:
and r2,r6,r3
sub1 r2,r3,r2
sub_s r0,r0,4
bic.f r2,r7,r2
.Lfound_char_ua:
add.pl r0,r0,1
jmi.d [blink]
btst_s r2,23
add.eq r0,r0,1
btst.eq r2,15
j_s.d [blink]
add.eq r0,r0,1
; N.B. if we searched for a char zero and found it in the MSB,
; and ignored matches are identical, we will take the early exit
; like for an ordinary found zero - except for the extra stalls at jhi -
; but still compute the right result.
.Lfound0_ua:
mov_s r3,r7
.Lfound0:
and_s r2,r2,r3
sub1 r2,r3,r2
or r7,r6,r4
bic_s r12,r12,r2
sub r2,r7,r3
or r2,r2,r6
bic r2,r4,r2
cmp_s r12,r2
mov.hi r0,0
btst.ls r2,31
jhi.d [blink]
add.eq r0,r0,1
btst.eq r2,23
add.eq r0,r0,1
btst.eq r2,15
j_s.d [blink]
add.eq r0,r0,1
#endif /* ENDIAN */
ENDFUNC (strchr)
#endif /* __ARC601__ || !__Xbarrel_shifter */
#endif /* !__OPTIMIZE_SIZE__ && !PREFER_SIZE_OVER_SPEED */

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/*
Copyright (c) 2015, Synopsys, Inc. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1) Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2) 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.
3) Neither the name of the Synopsys, Inc., 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.
*/
/* This implementation is optimized for performance. For code size a generic
implementation of this function from newlib/libc/string/strcmp.c will be
used. */
#if !defined (__OPTIMIZE_SIZE__) && !defined (PREFER_SIZE_OVER_SPEED)
#include "asm.h"
#ifdef __HS__
ENTRY (strcmp)
or r2, r0, r1
bmsk_s r2, r2, 1
brne r2, 0, @.Lcharloop
; s1 and s2 are word aligned
ld.ab r2, [r0, 4]
mov_s r12, 0x01010101
ror r11, r12
.align 4
.LwordLoop:
ld.ab r3, [r1, 4]
; Detect NULL char in str1
sub r4, r2, r12
ld.ab r5, [r0, 4]
bic r4, r4, r2
and r4, r4, r11
brne.d.nt r4, 0, .LfoundNULL
; Check if the read locations are the same
cmp r2, r3
beq.d .LwordLoop
mov.eq r2, r5
; A match is found, spot it out
#ifdef __LITTLE_ENDIAN__
swape r3, r3
mov_s r0, 1
swape r2, r2
#else
mov_s r0, 1
#endif
cmp_s r2, r3
j_s.d [blink]
bset.lo r0, r0, 31
.align 4
.LfoundNULL:
#ifdef __BIG_ENDIAN__
swape r4, r4
swape r2, r2
swape r3, r3
#endif
; Find null byte
ffs r0, r4
bmsk r2, r2, r0
bmsk r3, r3, r0
swape r2, r2
swape r3, r3
; make the return value
sub.f r0, r2, r3
mov.hi r0, 1
j_s.d [blink]
bset.lo r0, r0, 31
.align 4
.Lcharloop:
ldb.ab r2, [r0, 1]
ldb.ab r3, [r1, 1]
nop
breq r2, 0, .Lcmpend
breq r2, r3, .Lcharloop
.align 4
.Lcmpend:
j_s.d [blink]
sub r0, r2, r3
ENDFUNC (strcmp)
#endif /* __HS__ */
#endif /* !__OPTIMIZE_SIZE__ && !PREFER_SIZE_OVER_SPEED */

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/*
Copyright (c) 2015, Synopsys, Inc. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1) Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2) 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.
3) Neither the name of the Synopsys, Inc., 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)
# include "../../string/strcmp.c"
#else
/* See strcmp-*.S. */
#endif

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/*
Copyright (c) 2015, Synopsys, Inc. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1) Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2) 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.
3) Neither the name of the Synopsys, Inc., 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.
*/
/* This implementation is optimized for performance. For code size a generic
implementation of this function from newlib/libc/string/strcmp.c will be
used. */
#if !defined (__OPTIMIZE_SIZE__) && !defined (PREFER_SIZE_OVER_SPEED)
#include "asm.h"
/* This is optimized primarily for the ARC700.
It would be possible to speed up the loops by one cycle / word
respective one cycle / byte by forcing double source 1 alignment, unrolling
by a factor of two, and speculatively loading the second word / byte of
source 1; however, that would increase the overhead for loop setup / finish,
and strcmp might often terminate early. */
#ifndef __HS__
ENTRY (strcmp)
or r2,r0,r1
bmsk_s r2,r2,1
brne_l r2,0,.Lcharloop
mov_s r12,0x01010101
ror r5,r12
.Lwordloop:
ld.ab r2,[r0,4]
ld.ab r3,[r1,4]
nop_s
sub r4,r2,r12
bic r4,r4,r2
and r4,r4,r5
brne_l r4,0,.Lfound0
breq r2,r3,.Lwordloop
#ifdef __LITTLE_ENDIAN__
xor r0,r2,r3 ; mask for difference
sub_s r1,r0,1
bic_s r0,r0,r1 ; mask for least significant difference bit
sub r1,r5,r0
xor r0,r5,r1 ; mask for least significant difference byte
and_s r2,r2,r0
and_s r3,r3,r0
#endif /* LITTLE ENDIAN */
cmp_s r2,r3
mov_s r0,1
j_s.d [blink]
bset.lo r0,r0,31
.balign 4
#ifdef __LITTLE_ENDIAN__
.Lfound0:
xor r0,r2,r3 ; mask for difference
or r0,r0,r4 ; or in zero indicator
sub_s r1,r0,1
bic_s r0,r0,r1 ; mask for least significant difference bit
sub r1,r5,r0
xor r0,r5,r1 ; mask for least significant difference byte
and_s r2,r2,r0
and_s r3,r3,r0
sub.f r0,r2,r3
mov.hi r0,1
j_s.d [blink]
bset.lo r0,r0,31
#else /* BIG ENDIAN */
/* The zero-detection above can mis-detect 0x01 bytes as zeroes
because of carry-propagateion from a lower significant zero byte.
We can compensate for this by checking that bit0 is zero.
This compensation is not necessary in the step where we
get a low estimate for r2, because in any affected bytes
we already have 0x00 or 0x01, which will remain unchanged
when bit 7 is cleared. */
.balign 4
.Lfound0:
#ifndef __ARC601__
lsr r0,r4,8
lsr_s r1,r2
bic_s r2,r2,r0 ; get low estimate for r2 and get ...
bic_s r0,r0,r1 ; <this is the adjusted mask for zeros>
or_s r3,r3,r0 ; ... high estimate r3 so that r2 > r3 will ...
cmp_s r3,r2 ; ... be independent of trailing garbage
or_s r2,r2,r0 ; likewise for r3 > r2
bic_s r3,r3,r0
rlc r0,0 ; r0 := r2 > r3 ? 1 : 0
cmp_s r2,r3
j_s.d [blink]
bset.lo r0,r0,31
#else /* __ARC601__ */
/* Fall through to .Lcharloop. */
sub_s r0,r0,4
sub_s r1,r1,4
#endif /* __ARC601__ */
#endif /* ENDIAN */
.balign 4
.Lcharloop:
ldb.ab r2,[r0,1]
ldb.ab r3,[r1,1]
nop_s
breq_l r2,0,.Lcmpend
breq r2,r3,.Lcharloop
.Lcmpend:
j_s.d [blink]
sub r0,r2,r3
ENDFUNC (strcmp)
#endif /* !__HS__ */
#endif /* !__OPTIMIZE_SIZE__ && !PREFER_SIZE_OVER_SPEED */

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/*
Copyright (c) 2015, Synopsys, Inc. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1) Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2) 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.
3) Neither the name of the Synopsys, Inc., 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.
*/
/* This implementation is optimized for performance. For code size a generic
implementation of this function from newlib/libc/string/strcpy.c will be
used. */
#if !defined (__OPTIMIZE_SIZE__) && !defined (PREFER_SIZE_OVER_SPEED)
#include "asm.h"
#if defined (__ARC600__) && defined (__Xbarrel_shifter)
/* If dst and src are 4 byte aligned, copy 8 bytes at a time.
If the src is 4, but not 8 byte aligned, we first read 4 bytes to get
it 8 byte aligned. Thus, we can do a little read-ahead, without
dereferencing a cache line that we should not touch.
Note that short and long instructions have been scheduled to avoid
branch stalls.
This version is optimized for the ARC600 pipeline. */
ENTRY (strcpy)
or r2,r0,r1
bmsk.f 0,r2,1
mov r8,0x01010101
bne.d .Lcharloop
mov_s r10,r0
ld_l r3,[r1,0]
bbit0.d r1,2,.Loop_setup
ror r12,r8
sub r2,r3,r8
bic_s r2,r2,r3
and_s r2,r2,r12
brne_s r2,0,.Lr3z
st.ab r3,[r10,4]
ld.a r3,[r1,4]
.Loop_setup:
ld.a r4,[r1,4]
sub r2,r3,r8
and.f r2,r2,r12
sub r5,r4,r8
and.eq.f r5,r5,r12
b.d .Loop_start
mov_s r6,r3
.balign 4
.Loop:
ld.a r3,[r1,4]
st r4,[r10,4]
ld.a r4,[r1,4]
sub r2,r3,r8
and.f r2,r2,r12
sub r5,r4,r8
and.eq.f r5,r5,r12
st.ab r6,[r10,8]
mov r6,r3
.Loop_start:
beq.d .Loop
bic_s r2,r2,r3
brne.d r2,0,.Lr3z
and r5,r5,r12
bic r5,r5,r4
breq.d r5,0,.Loop
mov_s r3,r4
st.ab r6,[r10,4]
#ifdef __LITTLE_ENDIAN__
.Lr3z: bmsk.f r1,r3,7
.Lr3z_loop:
lsr_s r3,r3,8
stb.ab r1,[r10,1]
bne.d .Lr3z_loop
bmsk.f r1,r3,7
j_s [blink]
#else
.Lr3z: lsr.f r1,r3,24
.Lr3z_loop:
asl_s r3,r3,8
stb.ab r1,[r10,1]
bne.d .Lr3z_loop
lsr.f r1,r3,24
j_s [blink]
#endif
.balign 4
.Lcharloop:
ldb.ab r3,[r1,1]
brne.d r3,0,.Lcharloop
stb.ab r3,[r10,1]
j [blink]
ENDFUNC (strcpy)
#endif /* __ARC600__ && __Xbarrel_shifter */
#endif /* !__OPTIMIZE_SIZE__ && !PREFER_SIZE_OVER_SPEED */

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/*
Copyright (c) 2015, Synopsys, Inc. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1) Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2) 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.
3) Neither the name of the Synopsys, Inc., 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.
*/
/* This implementation is optimized for performance. For code size a generic
implementation of this function from newlib/libc/string/strcpy.c will be
used. */
#if !defined (__OPTIMIZE_SIZE__) && !defined (PREFER_SIZE_OVER_SPEED)
#include "asm.h"
#if (defined (__ARC700__) || defined (__EM__) || defined (__HS__)) \
&& defined (__Xbarrel_shifter)
/* If dst and src are 4 byte aligned, copy 8 bytes at a time.
If the src is 4, but not 8 byte aligned, we first read 4 bytes to get
it 8 byte aligned. Thus, we can do a little read-ahead, without
dereferencing a cache line that we should not touch.
Note that short and long instructions have been scheduled to avoid
branch stalls.
The beq_s to r3z could be made unaligned & long to avoid a stall
there, but the it is not likely to be taken often, and it
would also be likey to cost an unaligned mispredict at the next call. */
ENTRY (strcpy)
or r2,r0,r1
bmsk_s r2,r2,1
brne.d r2,0,charloop
mov_s r10,r0
ld_s r3,[r1,0]
mov r8,0x01010101
bbit0.d r1,2,loop_start
ror r12,r8
sub r2,r3,r8
bic_s r2,r2,r3
tst_s r2,r12
bne_l r3z
mov_s r4,r3
.balign 4
loop:
ld.a r3,[r1,4]
st.ab r4,[r10,4]
loop_start:
ld.a r4,[r1,4]
sub r2,r3,r8
bic_s r2,r2,r3
tst_l r2,r12
bne_l r3z
st.ab r3,[r10,4]
sub r2,r4,r8
bic r2,r2,r4
tst_l r2,r12
beq_l loop
mov_s r3,r4
#ifdef __LITTLE_ENDIAN__
r3z: bmsk.f r1,r3,7
lsr_s r3,r3,8
#else
r3z: lsr.f r1,r3,24
asl_s r3,r3,8
#endif
bne.d r3z
stb.ab r1,[r10,1]
j_s [blink]
.balign 4
charloop:
ldb.ab r3,[r1,1]
brne.d r3,0,charloop
stb.ab r3,[r10,1]
j [blink]
ENDFUNC (strcpy)
#endif /* (__ARC700__ || __EM__ || __HS__) && __Xbarrel_shifter */
#endif /* !__OPTIMIZE_SIZE__ && !PREFER_SIZE_OVER_SPEED */

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/*
Copyright (c) 2015, Synopsys, Inc. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1) Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2) 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.
3) Neither the name of the Synopsys, Inc., 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)
# include "../../string/strcpy.c"
#else
/* See strcpy-*.S. */
#endif

90
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/*
Copyright (c) 2015, Synopsys, Inc. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1) Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2) 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.
3) Neither the name of the Synopsys, Inc., 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.
*/
/* This implementation is optimized for performance. For code size a generic
implementation of this function from newlib/libc/string/strcpy.c will be
used. */
#if !defined (__OPTIMIZE_SIZE__) && !defined (PREFER_SIZE_OVER_SPEED)
#include "asm.h"
#if defined (__ARC601__) || !defined (__Xbarrel_shifter)
/* If dst and src are 4 byte aligned, copy 8 bytes at a time.
If the src is 4, but not 8 byte aligned, we first read 4 bytes to get
it 8 byte aligned. Thus, we can do a little read-ahead, without
dereferencing a cache line that we should not touch.
This version is a compromise between speed for the 601 pipeline and code
size. */
ENTRY (strcpy)
or r2,r0,r1
bmsk.f 0,r2,1
mov r8,0x01010101
bne.d .Lcharloop
mov_s r10,r0
ld_s r3,[r1]
bbit0.d r1,2,.Loop_start
ror r12,r8
sub r2,r3,r8
bic_s r2,r2,r3
and_s r2,r2,r12
brne_s r2,0,.Lr3z
mov r4,r3
sub_s r1,r1,4
.balign 4
.Loop:
ld.a r3,[r1,8]
st.ab r4,[r10,4]
.Loop_start:
ld r4,[r1,4]
sub r2,r3,r8
bic_s r2,r2,r3
tst_s r2,r12
sub r5,r4,r8
bic r5,r5,r4
bne_s .Lr3z
and r5,r5,r12
breq.d r5,0,.Loop
st.ab r3,[r10,4]
;mov_s r3,r4
add_s r1,r1,4
.balign 4
.Lr3z:
.Lcharloop:
ldb.ab r3,[r1,1]
brne.d r3,0,.Lcharloop
stb.ab r3,[r10,1]
j_s [blink]
ENDFUNC (strcpy)
#endif /* __ARC601__ || !__Xbarrel_shifter */
#endif /* !__OPTIMIZE_SIZE__ && !PREFER_SIZE_OVER_SPEED */

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/*
Copyright (c) 2015, Synopsys, Inc. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1) Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2) 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.
3) Neither the name of the Synopsys, Inc., 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.
*/
/* This implementation is optimized for performance. For code size a generic
implementation of this function from newlib/libc/string/strlen.c will be
used. */
#if !defined (__OPTIMIZE_SIZE__) && !defined (PREFER_SIZE_OVER_SPEED)
#include "asm.h"
#if (defined (__ARC700__) || defined (__EM__) || defined (__HS__)) \
&& defined (__ARC_NORM__) && defined (__Xbarrel_shifter)
ENTRY (strlen)
or r3,r0,7
ld r2,[r3,-7]
ld.a r6,[r3,-3]
mov r4,0x01010101
; uses long immediate
#ifdef __LITTLE_ENDIAN__
asl_s r1,r0,3
btst_s r0,2
asl r7,r4,r1
ror r5,r4
sub r1,r2,r7
bic_s r1,r1,r2
mov.eq r7,r4
sub r12,r6,r7
bic r12,r12,r6
or.eq r12,r12,r1
and r12,r12,r5
brne r12,0,.Learly_end
#else /* BIG ENDIAN */
ror r5,r4
btst_s r0,2
mov_s r1,31
sub3 r7,r1,r0
sub r1,r2,r4
bic_s r1,r1,r2
bmsk r1,r1,r7
sub r12,r6,r4
bic r12,r12,r6
bmsk.ne r12,r12,r7
or.eq r12,r12,r1
and r12,r12,r5
brne r12,0,.Learly_end
#endif /* ENDIAN */
.Loop:
ld_s r2,[r3,4]
ld.a r6,[r3,8]
; stall for load result
sub r1,r2,r4
bic_s r1,r1,r2
sub r12,r6,r4
bic r12,r12,r6
or_l r12,r12,r1
and r12,r12,r5
breq_l r12,0,.Loop
.Lend:
and.f r1,r1,r5
sub.ne r3,r3,4
mov.eq r1,r12
#ifdef __LITTLE_ENDIAN__
sub_s r2,r1,1
bic_s r2,r2,r1
norm r1,r2
sub_s r0,r0,3
lsr_s r1,r1,3
sub r0,r3,r0
j_s.d [blink]
sub_l r0,r0,r1
#else /* BIG ENDIAN */
lsr_s r1,r1,7
mov.eq r2,r6
bic_s r1,r1,r2
norm r1,r1
sub r0,r3,r0
lsr_s r1,r1,3
j_s.d [blink]
add_l r0,r0,r1
#endif /* ENDIAN */
.Learly_end:
b.d .Lend
sub_s.ne r1,r1,r1
ENDFUNC (strlen)
#endif /* (__ARC700__ || __EM__ || __HS__) && __ARC_NORM__ && _Xbarrel_shifter */
#endif /* !__OPTIMIZE_SIZE__ && !PREFER_SIZE_OVER_SPEED */

122
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/*
Copyright (c) 2015, Synopsys, Inc. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1) Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2) 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.
3) Neither the name of the Synopsys, Inc., 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.
*/
/* This implementation is optimized for performance. For code size a generic
implementation of this function from newlib/libc/string/strlen.c will be
used. */
#if !defined (__OPTIMIZE_SIZE__) && !defined (PREFER_SIZE_OVER_SPEED)
#include "asm.h"
#if (defined (__ARC600__) || !defined (__ARC_NORM__)) && !defined (__ARC601__) \
&& defined (__Xbarrel_shifter)
/* This code is optimized for the ARC600 pipeline. */
ENTRY (strlen)
or r3,r0,7
ld r2,[r3,-7]
ld.a r6,[r3,-3]
mov r4,0x01010101
; uses long immediate
#ifdef __LITTLE_ENDIAN__
asl_s r1,r0,3
btst_s r0,2
asl r7,r4,r1
ror r5,r4
sub r1,r2,r7
bic_l r1,r1,r2
mov.eq r7,r4
sub r12,r6,r7
bic r12,r12,r6
or.eq r12,r12,r1
and r12,r12,r5
brne r12,0,.Learly_end
#else /* BIG ENDIAN */
ror r5,r4
btst_s r0,2
mov_s r1,31
sub3 r7,r1,r0
sub r1,r2,r4
bic_l r1,r1,r2
bmsk r1,r1,r7
sub r12,r6,r4
bic r12,r12,r6
bmsk.ne r12,r12,r7
or.eq r12,r12,r1
and r12,r12,r5
brne r12,0,.Learly_end
#endif /* ENDIAN */
.Loop:
ld_s r2,[r3,4]
ld.a r6,[r3,8]
; stall for load result
sub r1,r2,r4
bic_s r1,r1,r2
sub r12,r6,r4
bic r12,r12,r6
or_s r12,r12,r1
and r12,r12,r5
breq_s r12,0,.Loop
.Lend:
and.f r1,r1,r5
sub.ne r3,r3,4
#ifdef __LITTLE_ENDIAN__
mov.eq r1,r12
asr.f 0,r1,8
bmsk.f 0,r1,15
sub r0,r3,r0
add.cc r0,r0,1
jne.d [blink]
asl.f 0,r1,9
j_s.d [blink]
sbc r0,r0,-2
#else /* BIG ENDIAN */
mov.eq r2,r6
asl_s r2,r2,7
mov.eq r1,r12
bic_s r1,r1,r2
asr.f 0,r1,16
sub r0,r3,r0
add.pl r0,r0,1
jne.d [blink]
add.eq r0,r0,1
j_s.d [blink]
add.cc r0,r0,1
#endif /* ENDIAN */
.balign 4
.Learly_end:
b.d .Lend
sub_s.ne r1,r1,r1
ENDFUNC (strlen)
#endif /* (__ARC600__ || !__ARC_NORM__) && !__ARC601__ && __Xbarrel_shifter */
#endif /* !__OPTIMIZE_SIZE__ && !PREFER_SIZE_OVER_SPEED */

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newlib/libc/machine/arc/strlen-stub.c Normal file
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/*
Copyright (c) 2015, Synopsys, Inc. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1) Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2) 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.
3) Neither the name of the Synopsys, Inc., 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)
# include "../../string/strlen.c"
#else
/* See strlen-*.S. */
#endif

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/*
Copyright (c) 2015, Synopsys, Inc. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1) Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2) 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.
3) Neither the name of the Synopsys, Inc., 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.
*/
/* This implementation is optimized for performance. For code size a generic
implementation of this function from newlib/libc/string/strlen.c will be
used. */
#if !defined (__OPTIMIZE_SIZE__) && !defined (PREFER_SIZE_OVER_SPEED)
#include "asm.h"
#if defined(__ARC601__) || !defined (__Xbarrel_shifter)
/* This code is optimized for the ARC601 pipeline without barrel shifter. */
ENTRY (strlen)
or r3,r0,7
ld r2,[r3,-7]
ld.a r6,[r3,-3]
mov r4,0x01010101
; uses long immediate
#ifdef __LITTLE_ENDIAN__
bmsk.f 0,r0,1
mov_s r1,31
add3_s r1,r1,r0
bmsk r7,r4,r1
xor.ne r7,r7,r4
btst_s r0,2
ror r5,r4
sub r1,r2,r7
bic_s r1,r1,r2
mov.eq r7,r4
sub r12,r6,r7
bic r12,r12,r6
or.eq r12,r12,r1
and r12,r12,r5
brne r12,0,.Learly_end
#else /* BIG ENDIAN */
add.f r1,r4,30 ; r1 mod 31 := -1; clear carry
ror r5,r4
sub3 r7,r1,r0
btst_s r0,2
sub r1,r2,r4
bic_s r1,r1,r2
bmsk r1,r1,r7
sub r12,r6,r4
bic r12,r12,r6
bmsk.ne r12,r12,r7
or.eq r12,r12,r1
and r12,r12,r5
brne r12,0,.Learly_end
#endif /* ENDIAN */
.Loop:
ld_s r2,[r3,4]
ld.a r6,[r3,8]
; stall for load result
sub r1,r2,r4
bic_s r1,r1,r2
sub r12,r6,r4
bic r12,r12,r6
or_s r12,r12,r1
and r12,r12,r5
breq_s r12,0,.Loop
.Lend:
and.f r1,r1,r5
sub.ne r3,r3,4
#ifdef __LITTLE_ENDIAN__
mov.eq r1,r12
btst_s r1,7
sub r0,r3,r0
add.eq r0,r0,1
bmsk.f 0,r1,15
add.eq r0,r0,1
bmsk.f 0,r1,23
j_s.d [blink]
add.eq r0,r0,1
#else /* BIG ENDIAN */
#ifdef __OPTIMIZE_SIZE__
1: ldb_s r1,[r3]
breq_s r1,0,0f
ldb.a r1,[r3,1]
breq_s r1,0,0f
ldb.a r1,[r3,1]
breq_s r1,0,0f
add_s r3,r3,1
0: j_s.d [blink]
sub r0,r3,r0
#define SPECIAL_EARLY_END
.Learly_end:
mov_s r3,r0
b_s 1b
#elif 0 /* Need more information about pipeline to assess if this is faster. */
mov.eq r2,r6
and r2,r2,r5
sub1 r2,r4,r2
mov.eq r1,r12
bic.f r1,r1,r2
sub r0,r3,r0
add.pl r0,r0,1
btst.pl r1,23
add.eq r0,r0,1
btst.eq r1,15
j_s.d [blink]
add.eq r0,r0,1
#else /* !__OPTIMIZE_SIZE__ */
/* Need carry clear here. */
mov.eq r2,r6
1: bmsk r1,r2,23
breq r1,r2,0f
bmsk r2,r1,15
breq.d r1,r2,0f
add_s r3,r3,1
cmp r2,0x100
add_s r3,r3,2
0: j_s.d [blink]
sbc r0,r3,r0
#define SPECIAL_EARLY_END
.Learly_end:
sub_s.ne r1,r1,r1
mov_s r12,0
bset r12,r12,r7
sub1 r2,r2,r12
b.d .Lend
sub1.ne r6,r6,r12
#endif /* !__OPTIMIZE_SIZE__ */
#endif /* ENDIAN */
#ifndef SPECIAL_EARLY_END
.balign 4
.Learly_end:
b.d .Lend
sub_s.ne r1,r1,r1
#endif /* !SPECIAL_EARLY_END */
ENDFUNC (strlen)
#endif /* __ARC601__ || !__Xbarrel_shifter*/
#endif /* !__OPTIMIZE_SIZE__ && !PREFER_SIZE_OVER_SPEED */

171
newlib/libc/machine/arc/strncpy-bs.S Normal file
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@ -0,0 +1,171 @@
/*
Copyright (c) 2015, Synopsys, Inc. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1) Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2) 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.
3) Neither the name of the Synopsys, Inc., 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.
*/
/* This implementation is optimized for performance. For code size a generic
implementation of this function from newlib/libc/string/strncpy.c will be
used. */
#if !defined (__OPTIMIZE_SIZE__) && !defined (PREFER_SIZE_OVER_SPEED)
#include "asm.h"
/* If dst and src are 4 byte aligned, copy 8 bytes at a time.
If the src is 4, but not 8 byte aligned, we first read 4 bytes to get
it 8 byte aligned. Thus, we can do a little read-ahead, without
dereferencing a cache line that we should not touch.
Note that short and long instructions have been scheduled to avoid
branch stalls.
The beq_s to r3z could be made unaligned & long to avoid a stall
there, but the it is not likely to be taken often, and it
would also be likey to cost an unaligned mispredict at the next call. */
#if !defined (__ARC601__) && defined (__Xbarrel_shifter)
#if defined (__ARC700___) || defined (__EM__) || defined (__HS__)
#define BRand(a,b,l) tst a,b ` bne_l l
#else
#define BRand(a,b,l) and a,a,b ` brne_s a,0,l
#endif
ENTRY (strncpy)
cmp_s r2,8
or r12,r0,r1
bmsk.cc.f r12,r12,1
brne.d r12,0,.Lbytewise
mov_s r10,r0
ld_s r3,[r1,0]
mov r8,0x01010101
sub lp_count,r2,1
bbit0.d r1,2,.Loop_start
ror r11,r8
sub r12,r3,r8
bic_l r12,r12,r3
BRand (r12,r11,.Lr3z)
mov_s r4,r3
ld.a r3,[r1,4]
sub lp_count,lp_count,4
st.ab r4,[r10,4]
.balign 4
.Loop_start:
lsr.f lp_count,lp_count,3
lpne .Loop_end
ld.a r4,[r1,4]
sub r12,r3,r8
bic_s r12,r12,r3
BRand (r12,r11,.Lr3z)
st.ab r3,[r10,4]
sub r12,r4,r8
bic r12,r12,r4
BRand (r12,r11,.Lr4z)
ld.a r3,[r1,4]
st.ab r4,[r10,4]
.Loop_end:
bcc_s .Lastword
ld.a r4,[r1,4]
sub r12,r3,r8
bic_s r12,r12,r3
BRand (r12,r11,.Lr3z)
st.ab r3,[r10,4]
mov_s r3,r4
.Lastword:
and.f lp_count,r2,3
mov.eq lp_count,4
lp .Last_byte_end
#ifdef __LITTLE_ENDIAN__
bmsk.f r1,r3,7
lsr.ne r3,r3,8
#else
lsr.f r1,r3,24
asl.ne r3,r3,8
#endif
stb.ab r1,[r10,1]
.Last_byte_end:
j_s [blink]
.balign 4
.Lr4z:
mov_l r3,r4
.Lr3z:
#if defined (__ARC700__) || defined (__EM__) || defined (__HS__)
#ifdef __LITTLE_ENDIAN__
bmsk.f r1,r3,7
lsr_s r3,r3,8
#else
lsr.f r1,r3,24
asl_s r3,r3,8
#endif
bne.d .Lr3z
stb.ab r1,[r10,1]
#else /* ! __ARC700__ */
#ifdef __LITTLE_ENDIAN__
bmsk.f r1,r3,7
.Lr3z_loop:
lsr_s r3,r3,8
stb.ab r1,[r10,1]
bne.d .Lr3z_loop
bmsk.f r1,r3,7
#else
lsr.f r1,r3,24
.Lr3z_loop:
asl_s r3,r3,8
stb.ab r1,[r10,1]
bne.d .Lr3z_loop
lsr.f r1,r3,24
#endif /* ENDIAN */
#endif /* ! __ARC700__ */
.Lzero_rest:
; __strncpy_bzero requires:
; return value in r0
; zeroing length in r2
; zeroing start address in r3
mov_s r3,r10
add_s r2,r2,r0
b.d __strncpy_bzero
sub_s r2,r2,r3
.balign 4
.Lbytewise:
sub.f r2,r2,1
mov_l r3,r0
jcs [blink]
.Lcharloop:
ldb.ab r12,[r1,1]
beq.d .Last_byte
sub.f r2,r2,1
brne.d r12,0,.Lcharloop
stb.ab r12,[r3,1]
b.d __strncpy_bzero
stb.ab r12,[r3,1]
.Last_byte:
j_s.d [blink]
stb_l r12,[r3]
ENDFUNC (strncpy)
#endif /* !__ARC601__ && __Xbarrel_shifter */
#endif /* !__OPTIMIZE_SIZE__ && !PREFER_SIZE_OVER_SPEED */

36
newlib/libc/machine/arc/strncpy-stub.c Normal file
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@ -0,0 +1,36 @@
/*
Copyright (c) 2015, Synopsys, Inc. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1) Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2) 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.
3) Neither the name of the Synopsys, Inc., 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)
# include "../../string/strncpy.c"
#else
/* See strncpy-*.S. */
#endif

134
newlib/libc/machine/arc/strncpy.S Normal file
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@ -0,0 +1,134 @@
/*
Copyright (c) 2015, Synopsys, Inc. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1) Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2) 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.
3) Neither the name of the Synopsys, Inc., 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.
*/
/* This implementation is optimized for performance. For code size a generic
implementation of this function from newlib/libc/string/strncpy.c will be
used. */
#if !defined (__OPTIMIZE_SIZE__) && !defined (PREFER_SIZE_OVER_SPEED)
#include "asm.h"
/* If dst and src are 4 byte aligned, copy 8 bytes at a time.
If the src is 4, but not 8 byte aligned, we first read 4 bytes to get
it 8 byte aligned. Thus, we can do a little read-ahead, without
dereferencing a cache line that we should not touch. */
#if defined (__ARC601__) || !defined (__Xbarrel_shifter)
#define BRand(a,b,l) and a,a,b ` brne_s a,0,l
ENTRY (strncpy)
cmp_s r2,8
or r12,r0,r1
bmsk.cc.f r12,r12,1
brne.d r12,0,.Lbytewise
mov_s r10,r0
ld_s r3,[r1,0]
mov r8,0x01010101
add r6,r0,r2
sub r6,r6,8
bbit0.d r1,2,.Loop_start
ror r11,r8
sub r12,r3,r8
bic_l r12,r12,r3
BRand (r12,r11,.Lr3z)
mov_s r4,r3
ld.a r3,[r1,4]
st.ab r4,[r10,4]
.balign 4
.Loop_start:
brhs r10,r6,.Loop_end
1:
ld.a r4,[r1,4]
sub r12,r3,r8
bic_s r12,r12,r3
BRand (r12,r11,.Lr3z2)
st.ab r3,[r10,8]
sub r12,r4,r8
bic r12,r12,r4
BRand (r12,r11,.Lr4z)
ld.a r3,[r1,4]
brlo.d r10,r6,1b
st r4,[r10,-4]
.Loop_end:
add r6,r6,4
brhs r10,r6,.Lastword
sub r12,r3,r8
bic_s r12,r12,r3
BRand (r12,r11,.Lr3z)
add_s r1,r1,4
st.ab r3,[r10,4]
.Lastword:
sub_s r2,r2,1
b.d .Lstart_charloop
bmsk.f r2,r2,1
.balign 4
nop_s
.Lr3z2: sub_s r1,r1,4
.Lr4z:
.Lr3z:
.balign 4
.Lr3z_loop:
ldb.ab r3,[r1,1]
brne.d r3,0,.Lr3z_loop
stb.ab r3,[r10,1]
.Lzero_rest:
; __strncpy_bzero requires:
; return value in r0
; zeroing length in r2
; zeroing start address in r3
mov_s r3,r10
add_s r2,r2,r0
b.d __strncpy_bzero
sub_s r2,r2,r3
.balign 4
.Lbytewise:
sub.f r2,r2,1
jcs [blink]
.Lstart_charloop:
mov_s r3,r10
.Lcharloop:
ldb.ab r12,[r1,1]
beq.d .Last_byte
sub.f r2,r2,1
brne.d r12,0,.Lcharloop
stb.ab r12,[r3,1]
b.d __strncpy_bzero
stb.ab r12,[r3,1]
.Last_byte:
j_s.d [blink]
stb_s r12,[r3]
ENDFUNC (strncpy)
#endif /* __ARC601__ || !__Xbarrel_shifter */
#endif /* !__OPTIMIZE_SIZE__ && !PREFER_SIZE_OVER_SPEED */

3
newlib/libc/machine/configure vendored
View File

@ -786,6 +786,7 @@ CPPFLAGS
CPP'
ac_subdirs_all='a29k
aarch64
arc
arm
bfin
cr16
@ -11833,6 +11834,8 @@ if test -n "${machine_dir}"; then
subdirs="$subdirs a29k"
;;
aarch64) subdirs="$subdirs aarch64"
;;
arc) subdirs="$subdirs arc"
;;
arm) subdirs="$subdirs arm"
;;

1
newlib/libc/machine/configure.in
View File

@ -25,6 +25,7 @@ if test -n "${machine_dir}"; then
case ${machine_dir} in
a29k) AC_CONFIG_SUBDIRS(a29k) ;;
aarch64) AC_CONFIG_SUBDIRS(aarch64) ;;
arc) AC_CONFIG_SUBDIRS(arc) ;;
arm) AC_CONFIG_SUBDIRS(arm) ;;
bfin) AC_CONFIG_SUBDIRS(bfin) ;;
cr16) AC_CONFIG_SUBDIRS(cr16) ;;