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glibc.23472
0017-S390-Optimize-strncat-wcsncat.patch
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File 0017-S390-Optimize-strncat-wcsncat.patch of Package glibc.23472
2015-08-26 Stefan Liebler <stli@linux.vnet.ibm.com> * sysdeps/s390/multiarch/strncat-c.c: New File. * sysdeps/s390/multiarch/strncat-vx.S: Likewise. * sysdeps/s390/multiarch/strncat.c: Likewise. * sysdeps/s390/multiarch/wcsncat-c.c: Likewise. * sysdeps/s390/multiarch/wcsncat-vx.S: Likewise. * sysdeps/s390/multiarch/wcsncat.c: Likewise. * sysdeps/s390/multiarch/Makefile (sysdep_routines): Add strncat and wcsncat functions. * sysdeps/s390/multiarch/ifunc-impl-list.c (__libc_ifunc_impl_list): Add ifunc test for strncat, wcsncat. * wcsmbs/wcsncat.c (WCSNCAT): Define and use macro. * string/test-strncat.c: Add wcsncat support. * wcsmbs/test-wcsncat.c: New File. * wcsmbs/Makefile (strop-tests): Add wcsncat. * benchtests/bench-strncat.c: Add wcsncat support. * benchtests/bench-wcsncat.c: New File. * benchtests/Makefile (wcsmbs-bench): Add wcsncat. Index: glibc-2.22/benchtests/Makefile =================================================================== --- glibc-2.22.orig/benchtests/Makefile +++ glibc-2.22/benchtests/Makefile @@ -36,7 +36,7 @@ string-bench := bcopy bzero memccpy memc strncasecmp strncat strncmp strncpy strnlen strpbrk strrchr \ strspn strstr strcpy_chk stpcpy_chk memrchr strsep strtok \ strcoll -wcsmbs-bench := wcslen wcsnlen wcscpy wcpcpy wcsncpy wcpncpy wcscat +wcsmbs-bench := wcslen wcsnlen wcscpy wcpcpy wcsncpy wcpncpy wcscat wcsncat string-bench-all := $(string-bench) ${wcsmbs-bench} # We have to generate locales Index: glibc-2.22/benchtests/bench-strncat.c =================================================================== --- glibc-2.22.orig/benchtests/bench-strncat.c +++ glibc-2.22/benchtests/bench-strncat.c @@ -17,33 +17,58 @@ <http://www.gnu.org/licenses/>. */ #define TEST_MAIN -#define TEST_NAME "strncat" +#ifndef WIDE +# define TEST_NAME "strncat" +#else +# define TEST_NAME "wcsncat" +#endif /* WIDE */ #include "bench-string.h" -typedef char *(*proto_t) (char *, const char *, size_t); -char *stupid_strncat (char *, const char *, size_t); -char *simple_strncat (char *, const char *, size_t); +#ifndef WIDE +# define STRNCAT strncat +# define CHAR char +# define SIMPLE_STRNCAT simple_strncat +# define STUPID_STRNCAT stupid_strncat +# define STRLEN strlen +# define MEMCMP memcmp +# define BIG_CHAR CHAR_MAX +# define SMALL_CHAR 127 +#else +# include <wchar.h> +# define STRNCAT wcsncat +# define CHAR wchar_t +# define SIMPLE_STRNCAT simple_wcsncat +# define STUPID_STRNCAT stupid_wcsncat +# define STRLEN wcslen +# define MEMCMP wmemcmp +# define BIG_CHAR WCHAR_MAX +# define SMALL_CHAR 1273 +#endif /* WIDE */ + +typedef CHAR *(*proto_t) (CHAR *, const CHAR *, size_t); +CHAR *STUPID_STRNCAT (CHAR *, const CHAR *, size_t); +CHAR *SIMPLE_STRNCAT (CHAR *, const CHAR *, size_t); -IMPL (stupid_strncat, 0) -IMPL (strncat, 2) +IMPL (STUPID_STRNCAT, 0) +IMPL (STRNCAT, 2) -char * -stupid_strncat (char *dst, const char *src, size_t n) +CHAR * +STUPID_STRNCAT (CHAR *dst, const CHAR *src, size_t n) { - char *ret = dst; + CHAR *ret = dst; while (*dst++ != '\0'); --dst; while (n--) - if ( (*dst++ = *src++) == '\0') + if ((*dst++ = *src++) == '\0') return ret; *dst = '\0'; return ret; } static void -do_one_test (impl_t *impl, char *dst, const char *src, size_t n) +do_one_test (impl_t *impl, CHAR *dst, const CHAR *src, size_t n) { - size_t k = strlen (dst), i, iters = INNER_LOOP_ITERS; + size_t k = STRLEN (dst), i, iters = INNER_LOOP_ITERS; timing_t start, stop, cur; if (CALL (impl, dst, src, n) != dst) @@ -54,10 +79,10 @@ do_one_test (impl_t *impl, char *dst, co return; } - size_t len = strlen (src); - if (memcmp (dst + k, src, len + 1 > n ? n : len + 1) != 0) + size_t len = STRLEN (src); + if (MEMCMP (dst + k, src, len + 1 > n ? n : len + 1) != 0) { - error (0, 0, "Incorrect cancatination in function %s", + error (0, 0, "Incorrect concatenation in function %s", impl->name); ret = 1; return; @@ -88,20 +113,20 @@ do_test (size_t align1, size_t align2, s size_t n, int max_char) { size_t i; - char *s1, *s2; + CHAR *s1, *s2; align1 &= 7; - if (align1 + len1 >= page_size) + if ((align1 + len1) * sizeof (CHAR) >= page_size) return; - if (align1 + n > page_size) + if ((align1 + n) * sizeof (CHAR) > page_size) return; align2 &= 7; - if (align2 + len1 + len2 >= page_size) + if ((align2 + len1 + len2) * sizeof (CHAR) >= page_size) return; - if (align2 + len1 + n > page_size) + if ((align2 + len1 + n) * sizeof (CHAR) > page_size) return; - s1 = (char *) (buf1 + align1); - s2 = (char *) (buf2 + align2); + s1 = (CHAR *) (buf1) + align1; + s2 = (CHAR *) (buf2) + align2; for (i = 0; i < len1; ++i) s1[i] = 32 + 23 * i % (max_char - 32); @@ -136,25 +161,25 @@ main (void) for (n = 2; n <= 2048; n*=4) { - do_test (0, 2, 2, 2, n, 127); - do_test (0, 0, 4, 4, n, 127); - do_test (4, 0, 4, 4, n, 255); - do_test (0, 0, 8, 8, n, 127); - do_test (0, 8, 8, 8, n, 127); + do_test (0, 2, 2, 2, n, SMALL_CHAR); + do_test (0, 0, 4, 4, n, SMALL_CHAR); + do_test (4, 0, 4, 4, n, BIG_CHAR); + do_test (0, 0, 8, 8, n, SMALL_CHAR); + do_test (0, 8, 8, 8, n, SMALL_CHAR); for (i = 1; i < 8; ++i) { - do_test (0, 0, 8 << i, 8 << i, n, 127); - do_test (8 - i, 2 * i, 8 << i, 8 << i, n, 127); - do_test (0, 0, 8 << i, 2 << i, n, 127); - do_test (8 - i, 2 * i, 8 << i, 2 << i, n, 127); + do_test (0, 0, 8 << i, 8 << i, n, SMALL_CHAR); + do_test (8 - i, 2 * i, 8 << i, 8 << i, n, SMALL_CHAR); + do_test (0, 0, 8 << i, 2 << i, n, SMALL_CHAR); + do_test (8 - i, 2 * i, 8 << i, 2 << i, n, SMALL_CHAR); } for (i = 1; i < 8; ++i) { - do_test (i, 2 * i, 8 << i, 1, n, 127); - do_test (2 * i, i, 8 << i, 1, n, 255); - do_test (i, i, 8 << i, 10, n, 127); + do_test (i, 2 * i, 8 << i, 1, n, SMALL_CHAR); + do_test (2 * i, i, 8 << i, 1, n, BIG_CHAR); + do_test (i, i, 8 << i, 10, n, SMALL_CHAR); } } Index: glibc-2.22/benchtests/bench-wcsncat.c =================================================================== --- /dev/null +++ glibc-2.22/benchtests/bench-wcsncat.c @@ -0,0 +1,20 @@ +/* Measure wcsncat functions. + Copyright (C) 2015 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#define WIDE 1 +#include "bench-strncat.c" Index: glibc-2.22/string/test-strncat.c =================================================================== --- glibc-2.22.orig/string/test-strncat.c +++ glibc-2.22/string/test-strncat.c @@ -1,4 +1,4 @@ -/* Test and measure strncat functions. +/* Test strncat functions. Copyright (C) 2011-2015 Free Software Foundation, Inc. Contributed by Intel Corporation. @@ -17,33 +17,64 @@ <http://www.gnu.org/licenses/>. */ #define TEST_MAIN -#define TEST_NAME "strncat" +#ifndef WIDE +# define TEST_NAME "strncat" +#else +# define TEST_NAME "wcsncat" +#endif /* WIDE */ #include "test-string.h" -typedef char *(*proto_t) (char *, const char *, size_t); -char *stupid_strncat (char *, const char *, size_t); -char *simple_strncat (char *, const char *, size_t); +#ifndef WIDE +# define STRNCAT strncat +# define CHAR char +# define UCHAR unsigned char +# define SIMPLE_STRNCAT simple_strncat +# define STUPID_STRNCAT stupid_strncat +# define STRLEN strlen +# define MEMSET memset +# define MEMCPY memcpy +# define MEMCMP memcmp +# define BIG_CHAR CHAR_MAX +# define SMALL_CHAR 127 +#else +# include <wchar.h> +# define STRNCAT wcsncat +# define CHAR wchar_t +# define UCHAR wchar_t +# define SIMPLE_STRNCAT simple_wcsncat +# define STUPID_STRNCAT stupid_wcsncat +# define STRLEN wcslen +# define MEMSET wmemset +# define MEMCPY wmemcpy +# define MEMCMP wmemcmp +# define BIG_CHAR WCHAR_MAX +# define SMALL_CHAR 1273 +#endif /* WIDE */ + +typedef CHAR *(*proto_t) (CHAR *, const CHAR *, size_t); +CHAR *STUPID_STRNCAT (CHAR *, const CHAR *, size_t); +CHAR *SIMPLE_STRNCAT (CHAR *, const CHAR *, size_t); -IMPL (stupid_strncat, 0) -IMPL (strncat, 2) +IMPL (STUPID_STRNCAT, 0) +IMPL (STRNCAT, 2) -char * -stupid_strncat (char *dst, const char *src, size_t n) +CHAR * +STUPID_STRNCAT (CHAR *dst, const CHAR *src, size_t n) { - char *ret = dst; + CHAR *ret = dst; while (*dst++ != '\0'); --dst; while (n--) - if ( (*dst++ = *src++) == '\0') + if ((*dst++ = *src++) == '\0') return ret; *dst = '\0'; return ret; } static void -do_one_test (impl_t *impl, char *dst, const char *src, size_t n) +do_one_test (impl_t *impl, CHAR *dst, const CHAR *src, size_t n) { - size_t k = strlen (dst); + size_t k = STRLEN (dst); if (CALL (impl, dst, src, n) != dst) { error (0, 0, "Wrong result in function %s %p != %p", impl->name, @@ -52,10 +83,10 @@ do_one_test (impl_t *impl, char *dst, co return; } - size_t len = strlen (src); - if (memcmp (dst + k, src, len + 1 > n ? n : len + 1) != 0) + size_t len = STRLEN (src); + if (MEMCMP (dst + k, src, len + 1 > n ? n : len + 1) != 0) { - error (0, 0, "Incorrect cancatination in function %s", + error (0, 0, "Incorrect concatenation in function %s", impl->name); ret = 1; return; @@ -74,20 +105,20 @@ do_test (size_t align1, size_t align2, s size_t n, int max_char) { size_t i; - char *s1, *s2; + CHAR *s1, *s2; align1 &= 7; - if (align1 + len1 >= page_size) + if ((align1 + len1) * sizeof (CHAR) >= page_size) return; - if (align1 + n > page_size) + if ((align1 + n) * sizeof (CHAR) > page_size) return; align2 &= 7; - if (align2 + len1 + len2 >= page_size) + if ((align2 + len1 + len2) * sizeof (CHAR) >= page_size) return; - if (align2 + len1 + n > page_size) + if ((align2 + len1 + n) * sizeof (CHAR) > page_size) return; - s1 = (char *) (buf1 + align1); - s2 = (char *) (buf2 + align2); + s1 = (CHAR *) (buf1) + align1; + s2 = (CHAR *) (buf2) + align2; for (i = 0; i < len1; ++i) s1[i] = 32 + 23 * i % (max_char - 32); @@ -107,9 +138,10 @@ static void do_random_tests (void) { size_t i, j, n, align1, align2, len1, len2, N; - unsigned char *p1 = buf1 + page_size - 512; - unsigned char *p2 = buf2 + page_size - 512; - unsigned char *res; + UCHAR *p1 = (UCHAR *) (buf1 + page_size) - 512; + UCHAR *p2 = (UCHAR *) (buf2 + page_size) - 512; + UCHAR *p3 = (UCHAR *) buf1; + UCHAR *res; fprintf (stdout, "Number of iterations in random test = %zd\n", ITERATIONS); for (n = 0; n < ITERATIONS; n++) @@ -148,26 +180,26 @@ do_random_tests (void) p1[i] = 0; else { - p1[i] = random () & 255; + p1[i] = random () & BIG_CHAR; if (i >= align1 && i < len1 + align1 && !p1[i]) - p1[i] = (random () & 127) + 3; + p1[i] = (random () & SMALL_CHAR) + 3; } } for (i = 0; i < len2; i++) { - buf1[i] = random () & 255; - if (!buf1[i]) - buf1[i] = (random () & 127) + 3; + p3[i] = random () & BIG_CHAR; + if (!p3[i]) + p3[i] = (random () & SMALL_CHAR) + 3; } - buf1[len2] = 0; + p3[len2] = 0; FOR_EACH_IMPL (impl, 1) { - memset (p2 - 64, '\1', align2 + 64); - memset (p2 + align2 + len2 + 1, '\1', 512 - align2 - len2 - 1); - memcpy (p2 + align2, buf1, len2 + 1); - res = (unsigned char *) CALL (impl, (char *) (p2 + align2), - (char *) (p1 + align1), N); + MEMSET (p2 - 64, '\1', align2 + 64); + MEMSET (p2 + align2 + len2 + 1, '\1', 512 - align2 - len2 - 1); + MEMCPY (p2 + align2, p3, len2 + 1); + res = (UCHAR *) CALL (impl, (CHAR *) (p2 + align2), + (CHAR *) (p1 + align1), N); if (res != p2 + align2) { error (0, 0, "Iteration %zd - wrong result in function %s " @@ -187,7 +219,7 @@ do_random_tests (void) break; } } - if (memcmp (p2 + align2, buf1, len2)) + if (MEMCMP (p2 + align2, p3, len2)) { error (0, 0, "Iteration %zd - garbage in string before, %s " "(%zd, %zd, %zd, %zd, %zd)", @@ -220,7 +252,7 @@ do_random_tests (void) ret = 1; } } - if (memcmp (p1 + align1, p2 + align2 + len2, + if (MEMCMP (p1 + align1, p2 + align2 + len2, (len1 + 1) > N ? N : len1 + 1)) { error (0, 0, "Iteration %zd - different strings, %s " @@ -233,7 +265,7 @@ do_random_tests (void) } int -main (void) +test_main (void) { size_t i, n; @@ -246,28 +278,30 @@ main (void) for (n = 2; n <= 2048; n*=4) { - do_test (0, 2, 2, 2, n, 127); - do_test (0, 0, 4, 4, n, 127); - do_test (4, 0, 4, 4, n, 255); - do_test (0, 0, 8, 8, n, 127); - do_test (0, 8, 8, 8, n, 127); + do_test (0, 2, 2, 2, n, SMALL_CHAR); + do_test (0, 0, 4, 4, n, SMALL_CHAR); + do_test (4, 0, 4, 4, n, BIG_CHAR); + do_test (0, 0, 8, 8, n, SMALL_CHAR); + do_test (0, 8, 8, 8, n, SMALL_CHAR); for (i = 1; i < 8; ++i) { - do_test (0, 0, 8 << i, 8 << i, n, 127); - do_test (8 - i, 2 * i, 8 << i, 8 << i, n, 127); - do_test (0, 0, 8 << i, 2 << i, n, 127); - do_test (8 - i, 2 * i, 8 << i, 2 << i, n, 127); + do_test (0, 0, 8 << i, 8 << i, n, SMALL_CHAR); + do_test (8 - i, 2 * i, 8 << i, 8 << i, n, SMALL_CHAR); + do_test (0, 0, 8 << i, 2 << i, n, SMALL_CHAR); + do_test (8 - i, 2 * i, 8 << i, 2 << i, n, SMALL_CHAR); } for (i = 1; i < 8; ++i) { - do_test (i, 2 * i, 8 << i, 1, n, 127); - do_test (2 * i, i, 8 << i, 1, n, 255); - do_test (i, i, 8 << i, 10, n, 127); + do_test (i, 2 * i, 8 << i, 1, n, SMALL_CHAR); + do_test (2 * i, i, 8 << i, 1, n, BIG_CHAR); + do_test (i, i, 8 << i, 10, n, SMALL_CHAR); } } do_random_tests (); return ret; } + +#include "../test-skeleton.c" Index: glibc-2.22/sysdeps/s390/multiarch/Makefile =================================================================== --- glibc-2.22.orig/sysdeps/s390/multiarch/Makefile +++ glibc-2.22/sysdeps/s390/multiarch/Makefile @@ -5,7 +5,8 @@ sysdep_routines += strlen strlen-vx strl stpcpy stpcpy-vx stpcpy-c \ strncpy strncpy-vx \ stpncpy stpncpy-vx stpncpy-c \ - strcat strcat-vx strcat-c + strcat strcat-vx strcat-c \ + strncat strncat-vx strncat-c endif ifeq ($(subdir),wcsmbs) @@ -15,5 +16,6 @@ sysdep_routines += wcslen wcslen-vx wcsl wcpcpy wcpcpy-vx wcpcpy-c \ wcsncpy wcsncpy-vx wcsncpy-c \ wcpncpy wcpncpy-vx wcpncpy-c \ - wcscat wcscat-vx wcscat-c + wcscat wcscat-vx wcscat-c \ + wcsncat wcsncat-vx wcsncat-c endif Index: glibc-2.22/sysdeps/s390/multiarch/ifunc-impl-list.c =================================================================== --- glibc-2.22.orig/sysdeps/s390/multiarch/ifunc-impl-list.c +++ glibc-2.22/sysdeps/s390/multiarch/ifunc-impl-list.c @@ -100,6 +100,9 @@ __libc_ifunc_impl_list (const char *name IFUNC_VX_IMPL (strcat); IFUNC_VX_IMPL (wcscat); + IFUNC_VX_IMPL (strncat); + IFUNC_VX_IMPL (wcsncat); + #endif /* HAVE_S390_VX_ASM_SUPPORT */ return i; Index: glibc-2.22/sysdeps/s390/multiarch/strncat-c.c =================================================================== --- /dev/null +++ glibc-2.22/sysdeps/s390/multiarch/strncat-c.c @@ -0,0 +1,23 @@ +/* Default strncat implementation for S/390. + Copyright (C) 2015 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#if defined HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc) +# define STRNCAT __strncat_c + +# include <string/strncat.c> +#endif Index: glibc-2.22/sysdeps/s390/multiarch/strncat-vx.S =================================================================== --- /dev/null +++ glibc-2.22/sysdeps/s390/multiarch/strncat-vx.S @@ -0,0 +1,239 @@ +/* Vector optimized 32/64 bit S/390 version of strncat. + Copyright (C) 2015 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#if defined HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc) + +# include "sysdep.h" +# include "asm-syntax.h" + + .text + +/* char * strncat (const char *dest, const char *src, size_t n) + Concatenate two strings - at most n characters of src. + + Register usage: + -r0=saved dest pointer for return + -r1=tmp + -r2=dest + -r3=src + -r4=n + -r5=current_len + -r6=tmp + -r7=tmp + -v16=part of src + -v17=index of zero + -v18=part of src + -v31=register save area for r6, r7 +*/ +ENTRY(__strncat_vx) + .machine "z13" + .machinemode "zarch_nohighgprs" + +# if !defined __s390x__ + llgfr %r4,%r4 +# endif /* !defined __s390x__ */ + + clgfi %r4,0 + ber %r14 /* Nothing to do, if n == 0. */ + lgr %r0,%r2 /* Save destination pointer for return. */ + vlvgp %v31,%r6,%r7 /* Save registers. */ + + /* STRLEN + %r1 = loaded bytes (tmp) + %r6 = zero byte index (tmp) + %r2 = dst + */ + vlbb %v16,0(%r2),6 /* Load s until next 4k-byte boundary. */ + lcbb %r1,0(%r2),6 /* Get bytes to 4k-byte boundary or 16. */ + + vfenezb %v16,%v16,%v16 /* Find element not equal with zero search. */ + vlgvb %r5,%v16,7 /* Load zero index or 16 if not found. */ + clrjl %r5,%r1,.Llen_end /* Found zero within loaded bytes, end. */ + + /* Align s to 16 byte. */ + risbgn %r1,%r2,60,128+63,0 /* %r3 = bits 60-63 of %r2 'and' 15. */ + lghi %r5,16 /* current_len = 16. */ + slr %r5,%r1 /* Compute bytes to 16bytes boundary. */ + + /* Find zero in 16byte aligned loop. */ +.Llen_loop: + vl %v16,0(%r5,%r2) /* Load s. */ + vfenezbs %v16,%v16,%v16 /* Find element not equal with zero search. */ + je .Llen_found /* Jump away if zero was found. */ + vl %v16,16(%r5,%r2) + vfenezbs %v16,%v16,%v16 + je .Llen_found16 + vl %v16,32(%r5,%r2) + vfenezbs %v16,%v16,%v16 + je .Llen_found32 + vl %v16,48(%r5,%r2) + vfenezbs %v16,%v16,%v16 + je .Llen_found48 + + aghi %r5,64 + j .Llen_loop /* No zero -> loop. */ + +.Llen_found48: + aghi %r5,16 +.Llen_found32: + aghi %r5,16 +.Llen_found16: + aghi %r5,16 +.Llen_found: + vlgvb %r1,%v16,7 /* Load byte index of zero. */ + algr %r5,%r1 + +.Llen_end: + /* STRCPY + %r1 = zero byte index (tmp) + %r6 = loaded bytes (tmp) + %r3 = curr src pointer + %r2 = curr dst pointer + %r7 = border, tmp + */ + la %r2,0(%r5,%r2) /* strcpy at end of dst-string. */ + + vlbb %v16,0(%r3),6 /* Load s until next 4k-byte boundary. */ + lcbb %r6,0(%r3),6 /* Get bytes to 4k-byte boundary or 16. */ + llgfr %r6,%r6 /* Convert 32bit to 64bit. */ + + lghi %r5,0 /* current_len = 0. */ + + clgrjle %r4,%r6,.Lcpy_remaining_v16 /* If n <= loaded-bytes + -> process remaining. */ + + /* n > loaded-byte-count. */ + vfenezb %v17,%v16,%v16 /* Find element not equal with zero search. */ + vlgvb %r1,%v17,7 /* Load zero index or 16 if not found. */ + clrjl %r1,%r6,.Lcpy_found_v16_store /* Found zero within loaded + bytes, copy and return. */ + + /* Align s to 16 byte. */ + risbgn %r7,%r3,60,128+63,0 /* %r3 = bits 60-63 of %r2 'and' 15. */ + lghi %r5,15 /* current_len = 15. */ + slr %r5,%r7 /* Compute highest index to 16byte boundary. */ + + /* Zero not found and n > loaded-byte-count. */ + vstl %v16,%r5,0(%r2) /* Copy loaded characters - no zero. */ + ahi %r5,1 /* Start loop at next character. */ + + /* + Now we are 16byte aligned, so we can load a full vreg + without page fault. + */ + lgr %r1,%r5 /* If %r5 + 64 < maxlen? -> loop64. */ + aghi %r1,64 + clgrjl %r1,%r4,.Lcpy_loop64 + + vl %v16,0(%r5,%r3) /* Load s. */ + clgijl %r4,17,.Lcpy_remaining_v16 /* If n <=16, + process remaining bytes. */ +.Lcpy_lt64: + lgr %r7,%r4 + slgfi %r7,16 /* border_len = n - 16. */ + + /* If current_len >= border then process remaining bytes. */ + clgrjhe %r5,%r7,.Lcpy_remaining_v16 + vfenezbs %v17,%v16,%v16 /* Find element not equal with zero search. */ + je .Lcpy_found_v16 /* Jump away if zero was found. */ + vl %v18,16(%r5,%r3) /* Load next part of s. */ + vst %v16,0(%r5,%r2) /* Store previous part without zero to dst. */ + aghi %r5,16 + + clgrjhe %r5,%r7,.Lcpy_remaining_v18 + vfenezbs %v17,%v18,%v18 + je .Lcpy_found_v18 + vl %v16,16(%r5,%r3) + vst %v18,0(%r5,%r2) + aghi %r5,16 + + clgrjhe %r5,%r7,.Lcpy_remaining_v16 + vfenezbs %v17,%v16,%v16 + je .Lcpy_found_v16 + vl %v18,16(%r5,%r3) + vst %v16,0(%r5,%r2) + aghi %r5,16 + +.Lcpy_remaining_v18: + vlr %v16,%v18 +.Lcpy_remaining_v16: + /* v16 contains the remaining bytes [1...16]. + Store remaining bytes and append string-termination. */ + vfenezb %v17,%v16,%v16 /* Find element not equal with zero search. */ + slgrk %r7,%r4,%r5 /* Remaining bytes = maxlen - current_len. */ + aghi %r7,-1 /* vstl needs highest index. */ + vlgvb %r1,%v17,7 /* Load zero index or 16 if not found. */ + la %r2,0(%r5,%r2) /* vstl has no index register. */ + /* Zero-index within remaining-bytes, store up to zero and end. */ + clgrjle %r1,%r7,.Lcpy_found_v16_store + vstl %v16,%r7,0(%r2) /* Store remaining bytes. */ + lghi %r1,0 + stc %r1,1(%r7,%r2) /* Store string-null-termination beyond n. */ +.Lcpy_end: + /* Restore saved registers. */ + vlgvg %r6,%v31,0 + vlgvg %r7,%v31,1 + lgr %r2,%r0 /* Load saved dest-ptr. */ + br %r14 + +.Lcpy_found_v16_32: + aghi %r5,32 + j .Lcpy_found_v16 +.Lcpy_found_v18_48: + aghi %r5,32 +.Lcpy_found_v18_16: + aghi %r5,16 +.Lcpy_found_v18: + vlr %v16,%v18 +.Lcpy_found_v16: + /* v16 contains a zero. Store remaining bytes to zero. current_len + has not reached border, thus checking for n is not needed! */ + vlgvb %r1,%v17,7 /* Load byte index of zero. */ + la %r2,0(%r5,%r2) +.Lcpy_found_v16_store: + vstl %v16,%r1,0(%r2) /* Copy characters including zero. */ + j .Lcpy_end + + /* Find zero in 16byte aligned loop. */ +.Lcpy_loop64: + vl %v16,0(%r5,%r3) /* Load s. */ + vfenezbs %v17,%v16,%v16 /* Find element not equal with zero search. */ + je .Lcpy_found_v16 /* Jump away if zero was found. */ + vl %v18,16(%r5,%r3) /* Load next part of s. */ + vst %v16,0(%r5,%r2) /* Store previous part without zero to dst. */ + vfenezbs %v17,%v18,%v18 + je .Lcpy_found_v18_16 + vl %v16,32(%r5,%r3) + vst %v18,16(%r5,%r2) + vfenezbs %v17,%v16,%v16 + je .Lcpy_found_v16_32 + vl %v18,48(%r5,%r3) + vst %v16,32(%r5,%r2) + vfenezbs %v17,%v18,%v18 + je .Lcpy_found_v18_48 + vst %v18,48(%r5,%r2) + + aghi %r5,64 + lgr %r1,%r5 /* If %r5 + 64 < maxlen? -> loop64. */ + aghi %r1,64 + clgrjl %r1,%r4,.Lcpy_loop64 + + vl %v16,0(%r5,%r3) /* Load s. */ + j .Lcpy_lt64 +END(__strncat_vx) +#endif /* HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc) */ Index: glibc-2.22/sysdeps/s390/multiarch/strncat.c =================================================================== --- /dev/null +++ glibc-2.22/sysdeps/s390/multiarch/strncat.c @@ -0,0 +1,27 @@ +/* Multiple versions of strncat. + Copyright (C) 2015 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#if defined HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc) +# include <string.h> +# include <ifunc-resolve.h> + +s390_vx_libc_ifunc2 (__strncat, strncat) + +#else +# include <string/strncat.c> +#endif /* !(defined HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc)) */ Index: glibc-2.22/sysdeps/s390/multiarch/wcsncat-c.c =================================================================== --- /dev/null +++ glibc-2.22/sysdeps/s390/multiarch/wcsncat-c.c @@ -0,0 +1,25 @@ +/* Default wcsncat implementation for S/390. + Copyright (C) 2015 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#if defined HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc) +# define WCSNCAT __wcsncat_c + +# include <wchar.h> +extern __typeof (wcsncat) __wcsncat_c; +# include <wcsmbs/wcsncat.c> +#endif Index: glibc-2.22/sysdeps/s390/multiarch/wcsncat-vx.S =================================================================== --- /dev/null +++ glibc-2.22/sysdeps/s390/multiarch/wcsncat-vx.S @@ -0,0 +1,265 @@ +/* Vector optimized 32/64 bit S/390 version of wcsncat. + Copyright (C) 2015 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#if defined HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc) + +# include "sysdep.h" +# include "asm-syntax.h" + + .text + +/* wchar_t * wcsncat (wchar_t *dest, const wchar_t *src, size_t n) + Concatenate two strings - at most n characters of src. + + Register usage: + -r0=saved dest pointer for return + -r1=tmp + -r2=dest + -r3=src + -r4=n + -r5=current_len + -r6=tmp + -r7=tmp + -v16=part of src + -v17=index of zero + -v18=part of src + -v31=register save area for r6, r7 +*/ +ENTRY(__wcsncat_vx) + .machine "z13" + .machinemode "zarch_nohighgprs" + +# if !defined __s390x__ + llgfr %r4,%r4 +# endif /* !defined __s390x__ */ + + clgfi %r4,0 + ber %r14 /* Nothing to do, if n == 0. */ + + vlbb %v16,0(%r2),6 /* Load s until next 4k-byte boundary. */ + lcbb %r1,0(%r2),6 /* Get bytes to 4k-byte boundary or 16. */ + + /* If either src or dest is not 4byte aligned, use __wcsncat_c. */ + tmll %r2,3 /* Test if s is 4-byte aligned? */ + jne .Lfallback /* And use common-code variant if not. */ + tmll %r3,3 /* Test if src is 4-byte aligned? */ + jne .Lfallback /* And use common-code variant if not. */ + + lgr %r0,%r2 /* Save destination pointer for return. */ + vlvgp %v31,%r6,%r7 /* Save registers. */ + + /* WCSLEN + %r1 = loaded bytes (tmp) + %r6 = zero byte index (tmp) + %r2 = dst + */ + vfenezf %v16,%v16,%v16 /* Find element not equal with zero search. */ + vlgvb %r5,%v16,7 /* Load zero index or 16 if not found. */ + clrjl %r5,%r1,.Llen_end /* Found zero within loaded bytes, end. */ + + /* Align s to 16 byte. */ + risbgn %r1,%r2,60,128+63,0 /* %r3 = bits 60-63 of %r2 'and' 15. */ + lghi %r5,16 /* current_len = 16. */ + slr %r5,%r1 /* Compute bytes to 16bytes boundary. */ + + /* Find zero in 16byte aligned loop. */ +.Llen_loop: + vl %v16,0(%r5,%r2) /* Load s. */ + vfenezfs %v16,%v16,%v16 /* Find element not equal with zero search. */ + je .Llen_found /* Jump away if zero was found. */ + vl %v16,16(%r5,%r2) + vfenezfs %v16,%v16,%v16 + je .Llen_found16 + vl %v16,32(%r5,%r2) + vfenezfs %v16,%v16,%v16 + je .Llen_found32 + vl %v16,48(%r5,%r2) + vfenezfs %v16,%v16,%v16 + je .Llen_found48 + + aghi %r5,64 + j .Llen_loop /* No zero -> loop. */ + +.Llen_found48: + aghi %r5,16 +.Llen_found32: + aghi %r5,16 +.Llen_found16: + aghi %r5,16 +.Llen_found: + vlgvb %r1,%v16,7 /* Load byte index of zero. */ + algr %r5,%r1 + +.Llen_end: + /* WCSNCPY + %r1 = zero byte index (tmp) + %r6 = loaded bytes (tmp) + %r3 = curr src pointer + %r2 = curr dst pointer + %r7 = border, tmp + */ + la %r2,0(%r5,%r2) /* strcpy at end of dst-string. */ + + vlbb %v16,0(%r3),6 /* Load s until next 4k-byte boundary. */ + lcbb %r6,0(%r3),6 /* Get bytes to 4k-byte boundary or 16. */ + llgfr %r6,%r6 /* Convert 32bit to 64bit. */ + + lghi %r5,0 /* current_len = 0. */ + + /* Check range of maxlen and convert to byte-count. */ +# ifdef __s390x__ + tmhh %r4,49152 /* Test bit 0 or 1 of maxlen. */ + lghi %r1,-4 /* Max byte-count is 18446744073709551612. */ +# else + tmlh %r4,49152 /* Test bit 0 or 1 of maxlen. */ + llilf %r1,4294967292 /* Max byte-count is 4294967292. */ +# endif /* !__s390x__ */ + sllg %r4,%r4,2 /* Convert character-count to byte-count. */ + locgrne %r4,%r1 /* Use max byte-count, if bit 0/1 was one. */ + + clgrjle %r4,%r6,.Lcpy_remaining_v16 /* If n <= loaded-bytes + -> process remaining. */ + + /* n > loaded-byte-count. */ + vfenezf %v17,%v16,%v16 /* Find element not equal with zero search. */ + vlgvb %r1,%v17,7 /* Load zero index or 16 if not found. */ + clrjl %r1,%r6,.Lcpy_found_v16_store /* Found zero within loaded bytes, + copy and return. */ + + /* Align s to 16 byte. */ + risbgn %r1,%r3,60,128+63,0 /* %r3 = bits 60-63 of %r2 'and' 15. */ + lghi %r5,15 /* current_len = 15. */ + slr %r5,%r1 /* Compute highest index to 16byte boundary. * + + /* Zero not found and maxlen > loaded-byte-count. */ + vstl %v16,%r5,0(%r2) /* Copy loaded characters - no zero. */ + ahi %r5,1 /* Start loop at next character. */ + + /* + Now we are 16byte aligned, so we can load a full vreg + without page fault. + */ + lgr %r1,%r5 /* If %r5 + 64 < maxlen? -> loop64. */ + aghi %r1,64 + clgrjl %r1,%r4,.Lcpy_loop64 + + vl %v16,0(%r5,%r3) /* Load s. */ + clgijl %r4,17,.Lcpy_remaining_v16 /* If n <=16, + process remaining bytes. */ +.Lcpy_lt64: + lgr %r7,%r4 + slgfi %r7,16 /* border_len = n - 16. */ + + clgrjhe %r5,%r7,.Lcpy_remaining_v16 + vfenezfs %v17,%v16,%v16 /* Find element not equal with zero search. */ + je .Lcpy_found_v16 /* Jump away if zero was found. */ + vl %v18,16(%r5,%r3) /* Load next part of s. */ + vst %v16,0(%r5,%r2) /* Save previous part without zero to dst. */ + aghi %r5,16 + + clgrjhe %r5,%r7,.Lcpy_remaining_v18 + vfenezfs %v17,%v18,%v18 + je .Lcpy_found_v18 + vl %v16,16(%r5,%r3) + vst %v18,0(%r5,%r2) + aghi %r5,16 + + clgrjhe %r5,%r7,.Lcpy_remaining_v16 + vfenezfs %v17,%v16,%v16 + je .Lcpy_found_v16 + vl %v18,16(%r5,%r3) + vst %v16,0(%r5,%r2) + aghi %r5,16 + +.Lcpy_remaining_v18: + vlr %v16,%v18 +.Lcpy_remaining_v16: + /* v16 contains the remaining bytes [1...16]. + Store remaining bytes and append string-termination. */ + vfenezf %v17,%v16,%v16 /* Find element not equal with zero search. */ + slgrk %r7,%r4,%r5 /* Remaining bytes = maxlen - current_len. */ + aghi %r7,-1 /* vstl needs highest index. */ + vlgvb %r1,%v17,7 /* Load zero index or 16 if not found. */ + la %r2,0(%r5,%r2) /* vstl has no index register. */ + /* Zero-index within remaining-bytes, store up to zero and end. */ + clgrjle %r1,%r7,.Lcpy_found_v16_store + vstl %v16,%r7,0(%r2) /* Store remaining bytes. */ + lghi %r1,0 + st %r1,1(%r7,%r2) /* Store string-null-termination beyond n. */ +.Lcpy_end: + /* Restore saved registers. */ + vlgvg %r6,%v31,0 + vlgvg %r7,%v31,1 + lgr %r2,%r0 /* Load saved dest-ptr. */ + br %r14 + +.Lcpy_found_v16_32: + aghi %r5,32 + j .Lcpy_found_v16 +.Lcpy_found_v18_48: + aghi %r5,32 +.Lcpy_found_v18_16: + aghi %r5,16 +.Lcpy_found_v18: + vlr %v16,%v18 +.Lcpy_found_v16: + /* v16 contains a zero. Store remaining bytes to zero. current_len + has not reached border, thus checking for n is not needed! */ + vlgvb %r1,%v17,7 /* Load byte index of zero. */ + la %r2,0(%r5,%r2) +.Lcpy_found_v16_store: + aghi %r1,3 /* Also copy remaining bytes of zero. */ + vstl %v16,%r1,0(%r2) /* Copy characters including zero. */ + j .Lcpy_end + + /* Find zero in 16byte aligned loop. */ +.Lcpy_loop2: + vl %v16,16(%r5,%r3) + vst %v18,0(%r5,%r2) + aghi %r5,16 + +.Lcpy_loop64: + vl %v16,0(%r5,%r3) + vfenezfs %v17,%v16,%v16 /* Find element not equal with zero search. */ + je .Lcpy_found_v16 /* Jump away if zero was found. */ + vl %v18,16(%r5,%r3) /* Load next part of s. */ + vst %v16,0(%r5,%r2) /* Save previous part without zero to dst. */ + vfenezfs %v17,%v18,%v18 + je .Lcpy_found_v18_16 + vl %v16,32(%r5,%r3) + vst %v18,16(%r5,%r2) + vfenezfs %v17,%v16,%v16 + je .Lcpy_found_v16_32 + vl %v18,48(%r5,%r3) + vst %v16,32(%r5,%r2) + vfenezfs %v17,%v18,%v18 + je .Lcpy_found_v18_48 + vst %v18,48(%r5,%r2) + + aghi %r5,64 + lgr %r1,%r5 /* If %r5 + 64 < maxlen? -> loop64. */ + aghi %r1,64 + clgrjl %r1,%r4,.Lcpy_loop64 + + vl %v16,0(%r5,%r3) /* Load s. */ + j .Lcpy_lt64 + +.Lfallback: + jg __wcsncat_c +END(__wcsncat_vx) +#endif /* HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc) */ Index: glibc-2.22/sysdeps/s390/multiarch/wcsncat.c =================================================================== --- /dev/null +++ glibc-2.22/sysdeps/s390/multiarch/wcsncat.c @@ -0,0 +1,27 @@ +/* Multiple versions of wcsncat. + Copyright (C) 2015 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#if defined HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc) +# include <wchar.h> +# include <ifunc-resolve.h> + +s390_vx_libc_ifunc2 (__wcsncat, wcsncat) + +#else +# include <wcsmbs/wcsncat.c> +#endif /* !(defined HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc)) */ Index: glibc-2.22/wcsmbs/Makefile =================================================================== --- glibc-2.22.orig/wcsmbs/Makefile +++ glibc-2.22/wcsmbs/Makefile @@ -44,7 +44,7 @@ routines := wcscat wcschr wcscmp wcscpy mbrtoc16 c16rtomb strop-tests := wcscmp wcsncmp wmemcmp wcslen wcschr wcsrchr wcscpy wcsnlen \ - wcpcpy wcsncpy wcpncpy wcscat + wcpcpy wcsncpy wcpncpy wcscat wcsncat tests := tst-wcstof wcsmbs-tst1 tst-wcsnlen tst-btowc tst-mbrtowc \ tst-wcrtomb tst-wcpncpy tst-mbsrtowcs tst-wchar-h tst-mbrtowc2 \ tst-c16c32-1 wcsatcliff $(addprefix test-,$(strop-tests)) Index: glibc-2.22/wcsmbs/test-wcsncat.c =================================================================== --- /dev/null +++ glibc-2.22/wcsmbs/test-wcsncat.c @@ -0,0 +1,20 @@ +/* Test wcsncat functions. + Copyright (C) 2015 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#define WIDE 1 +#include "../string/test-strncat.c" Index: glibc-2.22/wcsmbs/wcsncat.c =================================================================== --- glibc-2.22.orig/wcsmbs/wcsncat.c +++ glibc-2.22/wcsmbs/wcsncat.c @@ -18,10 +18,13 @@ #include <wchar.h> +#ifndef WCSNCAT +# define WCSNCAT wcsncat +#endif /* Append no more than N wide-character of SRC onto DEST. */ wchar_t * -wcsncat (dest, src, n) +WCSNCAT (dest, src, n) wchar_t *dest; const wchar_t *src; size_t n;
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