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SUSE:SLE-12-SP5:GA
glibc-utils
0025-S390-Optimize-strcspn-and-wcscspn.patch
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File 0025-S390-Optimize-strcspn-and-wcscspn.patch of Package glibc-utils
2015-08-26 Stefan Liebler <stli@linux.vnet.ibm.com> * sysdeps/s390/multiarch/strcspn-c.c: New File. * sysdeps/s390/multiarch/strcspn-vx.S: Likewise. * sysdeps/s390/multiarch/strcspn.c: Likewise. * sysdeps/s390/multiarch/wcscspn-c.c: Likewise. * sysdeps/s390/multiarch/wcscspn-vx.S: Likewise. * sysdeps/s390/multiarch/wcscspn.c: Likewise. * sysdeps/s390/multiarch/Makefile (sysdep_routines): Add strcspn and wcscspn functions. * sysdeps/s390/multiarch/ifunc-impl-list.c (__libc_ifunc_impl_list): Add ifunc test for strcspn, wcscspn. * wcsmbs/wcscspn.c: Use WCSCSPN if defined. * string/test-strcspn.c: Add wcscspn support. * wcsmbs/test-wcscspn.c: New File. * wcsmbs/Makefile (strop-tests): Add wcscspn. * benchtests/bench-strcspn.c: Add wcscspn support. * benchtests/bench-wcscspn.c: New File. * benchtests/Makefile (wcsmbs-bench): Add wcscspn. Index: glibc-2.22/benchtests/Makefile =================================================================== --- glibc-2.22.orig/benchtests/Makefile +++ glibc-2.22/benchtests/Makefile @@ -37,7 +37,7 @@ string-bench := bcopy bzero memccpy memc strspn strstr strcpy_chk stpcpy_chk memrchr strsep strtok \ strcoll wcsmbs-bench := wcslen wcsnlen wcscpy wcpcpy wcsncpy wcpncpy wcscat wcsncat \ - wcscmp wcsncmp wcschr wcschrnul wcsrchr wcsspn wcspbrk + wcscmp wcsncmp wcschr wcschrnul wcsrchr wcsspn wcspbrk wcscspn string-bench-all := $(string-bench) ${wcsmbs-bench} # We have to generate locales Index: glibc-2.22/benchtests/bench-strcspn.c =================================================================== --- glibc-2.22.orig/benchtests/bench-strcspn.c +++ glibc-2.22/benchtests/bench-strcspn.c @@ -19,22 +19,41 @@ #define STRPBRK_RESULT(s, pos) (pos) #define RES_TYPE size_t #define TEST_MAIN -#define TEST_NAME "strcspn" +#ifndef WIDE +# define TEST_NAME "strcspn" +#else +# define TEST_NAME "wcscspn" +#endif /* WIDE */ #include "bench-string.h" -typedef size_t (*proto_t) (const char *, const char *); -size_t simple_strcspn (const char *, const char *); -size_t stupid_strcspn (const char *, const char *); - -IMPL (stupid_strcspn, 0) -IMPL (simple_strcspn, 0) -IMPL (strcspn, 1) +#ifndef WIDE +# define STRCSPN strcspn +# define CHAR char +# define SIMPLE_STRCSPN simple_strcspn +# define STUPID_STRCSPN stupid_strcspn +# define STRLEN strlen +#else +# include <wchar.h> +# define STRCSPN wcscspn +# define CHAR wchar_t +# define SIMPLE_STRCSPN simple_wcscspn +# define STUPID_STRCSPN stupid_wcscspn +# define STRLEN wcslen +#endif /* WIDE */ + +typedef size_t (*proto_t) (const CHAR *, const CHAR *); +size_t SIMPLE_STRCSPN (const CHAR *, const CHAR *); +size_t STUPID_STRCSPN (const CHAR *, const CHAR *); + +IMPL (STUPID_STRCSPN, 0) +IMPL (SIMPLE_STRCSPN, 0) +IMPL (STRCSPN, 1) size_t -simple_strcspn (const char *s, const char *rej) +SIMPLE_STRCSPN (const CHAR *s, const CHAR *rej) { - const char *r, *str = s; - char c; + const CHAR *r, *str = s; + CHAR c; while ((c = *s++) != '\0') for (r = rej; *r != '\0'; ++r) @@ -44,9 +63,9 @@ simple_strcspn (const char *s, const cha } size_t -stupid_strcspn (const char *s, const char *rej) +STUPID_STRCSPN (const CHAR *s, const CHAR *rej) { - size_t ns = strlen (s), nrej = strlen (rej); + size_t ns = STRLEN (s), nrej = STRLEN (rej); size_t i, j; for (i = 0; i < ns; ++i) @@ -56,4 +75,6 @@ stupid_strcspn (const char *s, const cha return i; } +#undef CHAR +#undef STRLEN #include "bench-strpbrk.c" Index: glibc-2.22/benchtests/bench-wcscspn.c =================================================================== --- /dev/null +++ glibc-2.22/benchtests/bench-wcscspn.c @@ -0,0 +1,20 @@ +/* Measure wcscspn 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-strcspn.c" Index: glibc-2.22/string/test-strcspn.c =================================================================== --- glibc-2.22.orig/string/test-strcspn.c +++ glibc-2.22/string/test-strcspn.c @@ -1,4 +1,4 @@ -/* Test and measure strcspn functions. +/* Test strcspn functions. Copyright (C) 1999-2015 Free Software Foundation, Inc. This file is part of the GNU C Library. Written by Jakub Jelinek <jakub@redhat.com>, 1999. @@ -20,22 +20,41 @@ #define STRPBRK_RESULT(s, pos) (pos) #define RES_TYPE size_t #define TEST_MAIN -#define TEST_NAME "strcspn" +#ifndef WIDE +# define TEST_NAME "strcspn" +#else +# define TEST_NAME "wcscspn" +#endif /* WIDE */ #include "test-string.h" -typedef size_t (*proto_t) (const char *, const char *); -size_t simple_strcspn (const char *, const char *); -size_t stupid_strcspn (const char *, const char *); - -IMPL (stupid_strcspn, 0) -IMPL (simple_strcspn, 0) -IMPL (strcspn, 1) +#ifndef WIDE +# define STRCSPN strcspn +# define CHAR char +# define SIMPLE_STRCSPN simple_strcspn +# define STUPID_STRCSPN stupid_strcspn +# define STRLEN strlen +#else +# include <wchar.h> +# define STRCSPN wcscspn +# define CHAR wchar_t +# define SIMPLE_STRCSPN simple_wcscspn +# define STUPID_STRCSPN stupid_wcscspn +# define STRLEN wcslen +#endif /* WIDE */ + +typedef size_t (*proto_t) (const CHAR *, const CHAR *); +size_t SIMPLE_STRCSPN (const CHAR *, const CHAR *); +size_t STUPID_STRCSPN (const CHAR *, const CHAR *); + +IMPL (STUPID_STRCSPN, 0) +IMPL (SIMPLE_STRCSPN, 0) +IMPL (STRCSPN, 1) size_t -simple_strcspn (const char *s, const char *rej) +SIMPLE_STRCSPN (const CHAR *s, const CHAR *rej) { - const char *r, *str = s; - char c; + const CHAR *r, *str = s; + CHAR c; while ((c = *s++) != '\0') for (r = rej; *r != '\0'; ++r) @@ -45,9 +64,9 @@ simple_strcspn (const char *s, const cha } size_t -stupid_strcspn (const char *s, const char *rej) +STUPID_STRCSPN (const CHAR *s, const CHAR *rej) { - size_t ns = strlen (s), nrej = strlen (rej); + size_t ns = STRLEN (s), nrej = STRLEN (rej); size_t i, j; for (i = 0; i < ns; ++i) @@ -57,4 +76,6 @@ stupid_strcspn (const char *s, const cha return i; } +#undef CHAR +#undef STRLEN #include "test-strpbrk.c" Index: glibc-2.22/sysdeps/s390/multiarch/Makefile =================================================================== --- glibc-2.22.orig/sysdeps/s390/multiarch/Makefile +++ glibc-2.22/sysdeps/s390/multiarch/Makefile @@ -13,7 +13,8 @@ sysdep_routines += strlen strlen-vx strl strchrnul strchrnul-vx strchrnul-c \ strrchr strrchr-vx strrchr-c \ strspn strspn-vx strspn-c \ - strpbrk strpbrk-vx strpbrk-c + strpbrk strpbrk-vx strpbrk-c \ + strcspn strcspn-vx strcspn-c endif ifeq ($(subdir),wcsmbs) @@ -31,5 +32,6 @@ sysdep_routines += wcslen wcslen-vx wcsl wcschrnul wcschrnul-vx wcschrnul-c \ wcsrchr wcsrchr-vx wcsrchr-c \ wcsspn wcsspn-vx wcsspn-c \ - wcspbrk wcspbrk-vx wcspbrk-c + wcspbrk wcspbrk-vx wcspbrk-c \ + wcscspn wcscspn-vx wcscspn-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 @@ -124,6 +124,9 @@ __libc_ifunc_impl_list (const char *name IFUNC_VX_IMPL (strpbrk); IFUNC_VX_IMPL (wcspbrk); + IFUNC_VX_IMPL (strcspn); + IFUNC_VX_IMPL (wcscspn); + #endif /* HAVE_S390_VX_ASM_SUPPORT */ return i; Index: glibc-2.22/sysdeps/s390/multiarch/strcspn-c.c =================================================================== --- /dev/null +++ glibc-2.22/sysdeps/s390/multiarch/strcspn-c.c @@ -0,0 +1,28 @@ +/* Default strcspn 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 STRCSPN __strcspn_c +# ifdef SHARED +# undef libc_hidden_builtin_def +# define libc_hidden_builtin_def(name) \ + __hidden_ver1 (__strcspn_c, __GI_strcspn, __strcspn_c); +# endif /* SHARED */ + +# include <string/strcspn.c> +#endif /* HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc) */ Index: glibc-2.22/sysdeps/s390/multiarch/strcspn-vx.S =================================================================== --- /dev/null +++ glibc-2.22/sysdeps/s390/multiarch/strcspn-vx.S @@ -0,0 +1,281 @@ +/* Vector optimized 32/64 bit S/390 version of strcspn. + 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 + +/* size_t strcspn (const char *s, const char * reject) + The strcspn() function calculates the length of the initial segment + of s which consists entirely of characters not in reject. + + This method checks the length of reject string. If it fits entirely + in one vector register, a fast algorithm is used, which does not need + to check multiple parts of accept-string. Otherwise a slower full + check of accept-string is used. + + register overview: + r3: pointer to start of reject-string + r2: pointer to start of search-string + r0: loaded byte count of vlbb search-string + r4: found byte index + r1: current return len + v16: search-string + v17: reject-string + v18: temp-vreg + + ONLY FOR SLOW: + v19: first reject-string + v20: zero for preparing acc-vector + v21: global mask; 1 indicates a match between + search-string-vreg and any reject-character + v22: current mask; 1 indicates a match between + search-string-vreg and any reject-character in current acc-vreg + v24: one for result-checking of former string-part + v30, v31: for re-/storing registers r6, r8, r9 + r5: current len of reject-string + r6: zero-index in search-string or 16 if no zero + or min(zero-index, loaded byte count) + r8: >0, if former reject-string-part contains a zero, + otherwise =0; + r9: loaded byte count of vlbb reject-string +*/ +ENTRY(__strcspn_vx) + .machine "z13" + .machinemode "zarch_nohighgprs" + + /* + Check if reject-string fits in one vreg: + ---------------------------------------- + */ + vlbb %v17,0(%r3),6 /* Load reject. */ + lghi %r1,0 /* Zero out current len. */ + lcbb %r0,0(%r3),6 + jo .Lcheck_onbb /* Special case if reject + lays on block-boundary. */ +.Lcheck_notonbb: + vistrbs %v17,%v17 /* Fill with zeros after first zero. */ + je .Lfast /* Zero found -> reject fits in one vreg. */ + j .Lslow /* No zero -> reject exceeds one vreg. */ + + +.Lcheck_onbb: + /* Reject lays on block-boundary. */ + vfenezb %v18,%v17,%v17 /* Search zero in loaded reject bytes. */ + vlgvb %r4,%v18,7 /* Get index of zero or 16 if not found. */ + clrjl %r4,%r0,.Lcheck_notonbb /* Zero index < loaded bytes count -> + Reject fits in one vreg; + Fill with zeros and proceed + with FAST. */ + vl %v17,0(%r3) /* Load reject, which exceeds loaded bytes. */ + j .Lcheck_notonbb /* Check if reject fits in one vreg. */ + + + /* + Search s for reject in one vreg + ------------------------------- + */ +.Lfast: + /* Complete reject-string in v17 and remaining bytes are zero. */ + + vlbb %v16,0(%r2),6 /* Load s until next 4k-byte boundary. */ + lcbb %r0,0(%r2),6 /* Get bytes to 4k-byte boundary or 16. */ + + vfaezbs %v18,%v16,%v17,0 /* Find first element in v16 + unequal to any in v17 + or first zero element. */ + + vlgvb %r4,%v18,7 /* Load byte index of found element. */ + clrjl %r4,%r0,.Lfast_loop_found2 /* If found index is within loaded + bytes, return with found element + index (=equal count). */ + + /* Align s to 16 byte. */ + risbgn %r4,%r2,60,128+63,0 /* %r3 = bits 60-63 of %r2 'and' 15. */ + lghi %r1,16 /* current_len = 16. */ + slr %r1,%r4 /* Compute bytes to 16bytes boundary. */ + + /* Process s in 16byte aligned loop. */ +.Lfast_loop: + vl %v16,0(%r1,%r2) /* Load search-string. */ + vfaezbs %v18,%v16,%v17,0 /* Find first element in v16 equal to any + in v17 or first zero element. */ + jno .Lfast_loop_found + + vl %v16,16(%r1,%r2) + vfaezbs %v18,%v16,%v17,0 + jno .Lfast_loop_found16 + + vl %v16,32(%r1,%r2) + vfaezbs %v18,%v16,%v17,0 + jno .Lfast_loop_found32 + + vl %v16,48(%r1,%r2) + vfaezbs %v18,%v16,%v17,0 + jno .Lfast_loop_found48 + + aghi %r1,64 + j .Lfast_loop /* Loop if no element was unequal to reject + and not zero. */ + + /* Found equal or zero element. */ +.Lfast_loop_found48: + aghi %r1,16 +.Lfast_loop_found32: + aghi %r1,16 +.Lfast_loop_found16: + aghi %r1,16 +.Lfast_loop_found: + vlgvb %r4,%v18,7 /* Load byte index of found element or zero. */ +.Lfast_loop_found2: + algrk %r2,%r1,%r4 /* Add found index to current len. */ + br %r14 + + + + /* + Search s for reject in multiple vregs + ------------------------------------- + */ +.Lslow: + /* Save registers. */ + vlvgg %v30,%r6,0 + vlvgp %v31,%r8,%r9 + + /* Reject in v17 without zero. */ + vlr %v19,%v17 /* Save first acc-part for a fast reload. */ + vzero %v20 /* Zero for preparing acc-vector. */ + vone %v24 /* One for checking result of former + string-part. */ + + /* Align s to 16 byte. */ + risbg %r4,%r2,60,128+63,0 /* Test if s is aligned and + %r4 = bits 60-63 'and' 15. */ + je .Lslow_loop_str /* If s is aligned, loop aligned. */ + lghi %r0,15 + slr %r0,%r4 /* Compute highest index to load (15-x). */ + vll %v16,%r0,0(%r2) /* Load up to 16 byte boundary (vll needs + highest index, remaining bytes are 0). */ + ahi %r0,1 /* Work with loaded byte count. */ + vzero %v21 /* Zero out global mask. */ + lghi %r5,0 /* Set current len of reject-string to zero. */ + vfenezb %v18,%v16,%v16 /* Find zero in current string-part. */ + lghi %r8,0 /* There is no zero in first reject-part. */ + vlgvb %r6,%v18,7 /* Load byte index of zero or 16 if no zero. */ + clije %r6,0,.Lslow_end /* If first element is zero -> return 0. */ + clr %r0,%r6 /* cc==1 if loaded byte count < zero-index. */ + locrl %r6,%r0 /* Load on cc==1; zero-index = lbc. */ + j .Lslow_loop_acc + + + /* Process s in 16byte aligned loop. */ +.Lslow_next_str: + /* Check results of former processed str-part. */ + vfeeb %v18,%v21,%v24 /* Find first equal match in global mask + (ones in element). */ + vlgvb %r4,%v18,7 /* Get index of first one (=equal) or 16. */ + /* Equal-index < min(zero-index, loaded byte count) + -> Return pointer to equal element. */ + clrjl %r4,%r6,.Lslow_index_found + /* Zero-index < loaded byte count + -> Former str-part was last str-part + -> Return null */ + clrjl %r6,%r0,.Lslow_end_not_found + + /* All elements are zero (=no match) -> Proceed with next str-part. */ + vlr %v17,%v19 /* Load first part of reject (no zero). */ + algfr %r1,%r0 /* Add loaded byte count to current len. */ + +.Lslow_loop_str: + vl %v16,0(%r1,%r2) /* Load search-string. */ + lghi %r0,16 /* Loaded byte count is 16. */ + vzero %v21 /* Zero out global mask. */ + lghi %r5,0 /* Set current len of reject to zero. */ + vfenezb %v18,%v16,%v16 /* Find zero in current string-part. */ + lghi %r8,0 /* There is no zero in first reject-part. */ + vlgvb %r6,%v18,7 /* Load byte index of zero or 16 if no zero. */ + clije %r6,0,.Lslow_end /* If first element is zero (end of string) + -> Return current length. */ + +.Lslow_loop_acc: + vfaeb %v22,%v16,%v17,4 /* Create matching-mask (1 in mask -> + Character matches any rejected character in + this reject-string-part) IN=0, RT=1. */ + vlgvb %r4,%v22,0 /* Get result of first element. */ + /* First element is equal to any rejected characters? + (all other parts of reject cannot lead to a match before this one) + -> Return current len, which is pointing to this element. */ + clijh %r4,0,.Lslow_end + vo %v21,%v21,%v22 /* Global-mask = global-|matching-mask. */ + /* Proceed with next acc until end of acc is reached. */ + + +.Lslow_next_acc: + clijh %r8,0,.Lslow_next_str /* There was a zero in last reject-part + -> Add found index to current len + and end. */ + vlbb %v17,16(%r5,%r3),6 /* Load next reject part. */ + aghi %r5,16 /* Increment current len of reject-string. */ + lcbb %r9,0(%r5,%r3),6 /* Get loaded byte count of reject-string. */ + jo .Lslow_next_acc_onbb /* Jump away if reject-string is + on block-boundary. */ +.Lslow_next_acc_notonbb: + vistrbs %v17,%v17 /* Fill with zeros after first zero. */ + jo .Lslow_loop_acc /* No zero found -> no preparation needed. */ + +.Lslow_next_acc_prepare_zero: + /* Zero in reject-part: fill zeros with first-reject-character. */ + vlgvb %r8,%v17,0 /* Load first element of reject-part. */ + clije %r8,0,.Lslow_next_str /* Process next str-part if first + character in this part of reject + is a zero. */ + /* r8>0 -> zero found in this acc-part. */ + vrepb %v18,%v17,0 /* Replicate first char accross all chars. */ + vceqb %v22,%v20,%v17 /* Create a mask (v22) of null chars + by comparing with 0 (v20). */ + vsel %v17,%v18,%v17,%v22 /* Replace null chars with first char. */ + j .Lslow_loop_acc /* Reject-string part is prepared. */ + +.Lslow_next_acc_onbb: + vfenezb %v18,%v17,%v17 /* Find zero in loaded bytes of reject part. */ + vlgvb %r8,%v18,7 /* Load byte index of zero. */ + clrjl %r8,%r9,.Lslow_next_acc_notonbb /* Found a zero in loaded bytes + -> Prepare vreg. */ + vl %v17,0(%r5,%r3) /* Load over boundary ... */ + lghi %r8,0 /* r8=0 -> no zero in this part of acc, + check for zero is in jump-target. */ + j .Lslow_next_acc_notonbb /* ... and search for zero in + fully loaded vreg again. */ + +.Lslow_end_not_found: + algfr %r1,%r6 /* Add zero-index to current len. */ + j .Lslow_end +.Lslow_index_found: + algfr %r1,%r4 /* Add found index of char to current len. */ +.Lslow_end: + lgr %r2,%r1 + /* Restore registers. */ + vlgvg %r6,%v30,0 + vlgvg %r8,%v31,0 + vlgvg %r9,%v31,1 + br %r14 +END(__strcspn_vx) +#endif /* HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc) */ Index: glibc-2.22/sysdeps/s390/multiarch/strcspn.c =================================================================== --- /dev/null +++ glibc-2.22/sysdeps/s390/multiarch/strcspn.c @@ -0,0 +1,27 @@ +/* Multiple versions of strcspn. + 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 (__strcspn, strcspn) + +#else +# include <string/strcspn.c> +#endif /* !(defined HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc)) */ Index: glibc-2.22/sysdeps/s390/multiarch/wcscspn-c.c =================================================================== --- /dev/null +++ glibc-2.22/sysdeps/s390/multiarch/wcscspn-c.c @@ -0,0 +1,26 @@ +/* Default wcscscpn 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 WCSCSPN __wcscspn_c + +# include <wchar.h> +extern __typeof (wcscspn) __wcscspn_c; + +# include <wcsmbs/wcscspn.c> +#endif Index: glibc-2.22/sysdeps/s390/multiarch/wcscspn-vx.S =================================================================== --- /dev/null +++ glibc-2.22/sysdeps/s390/multiarch/wcscspn-vx.S @@ -0,0 +1,293 @@ +/* Vector optimized 32/64 bit S/390 version of wcscspn. + 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 + +/* size_t wcscspn (const wchar_t *s, const wchar_t * reject) + The wcscspn() function calculates the length of the initial segment + of s which consists entirely of characters not in reject. + + This method checks the length of reject string. If it fits entirely + in one vector register, a fast algorithm is used, which does not need + to check multiple parts of accept-string. Otherwise a slower full + check of accept-string is used. + + register overview: + r3: pointer to start of reject-string + r2: pointer to start of search-string + r0: loaded byte count of vlbb search-string + r4: found byte index + r1: current return len + v16: search-string + v17: reject-string + v18: temp-vreg + + ONLY FOR SLOW: + v19: first reject-string + v20: zero for preparing acc-vector + v21: global mask; 1 indicates a match between + search-string-vreg and any reject-character + v22: current mask; 1 indicates a match between + search-string-vreg and any reject-character in current acc-vreg + v30, v31: for re-/storing registers r6, r8, r9 + r5: current len of reject-string + r6: zero-index in search-string or 16 if no zero + or min(zero-index, loaded byte count) + r8: >0, if former reject-string-part contains a zero, + otherwise =0; + r9: loaded byte count of vlbb reject-string +*/ +ENTRY(__wcscspn_vx) + .machine "z13" + .machinemode "zarch_nohighgprs" + + tmll %r2,3 /* Test if s is 4-byte aligned? */ + jne .Lfallback /* And use common-code variant if not. */ + + /* + Check if reject-string fits in one vreg: + ---------------------------------------- + */ + vlbb %v17,0(%r3),0 /* Load reject. */ + lcbb %r0,0(%r3),0 + jo .Lcheck_onbb /* Special case if reject + lays on block-boundary. */ + +.Lcheck_notonbb: + lghi %r1,0 /* Zero out current len. */ + vistrfs %v17,%v17 /* Fill with zeros after first zero. */ + je .Lfast /* Zero found -> reject fits in one vreg. */ + j .Lslow /* No zero -> reject exceeds one vreg. */ + + +.Lcheck_onbb: + /* Reject lays on block-boundary. */ + nill %r0,65532 /* Recognize only fully loaded characters. */ + je .Lcheck_onbb2 /* Reload vr, if we loaded no full wchar_t. */ + vfenezf %v18,%v17,%v17 /* Search zero in loaded reject bytes. */ + vlgvb %r4,%v18,7 /* Get index of zero or 16 if not found. */ + clrjl %r4,%r0,.Lcheck_notonbb /* Zero index < loaded bytes count -> + Reject fits in one vreg; + Fill with zeros and proceed + with FAST. */ +.Lcheck_onbb2: + vl %v17,0(%r3) /* Load reject, which exceeds loaded bytes. */ + j .Lcheck_notonbb /* Check if reject fits in one vreg. */ + + + /* + Search s for reject in one vreg + ------------------------------- + */ +.Lfast: + /* Complete reject-string in v17 and remaining bytes are zero. */ + + vlbb %v16,0(%r2),6 /* Load s until next 4k-byte boundary. */ + lcbb %r0,0(%r2),6 /* Get bytes to 4k-byte boundary or 16. */ + + vfaezfs %v18,%v16,%v17,0 /* Find first element in v16 + unequal to any in v17 + or first zero element. */ + vlgvb %r4,%v18,7 /* Load byte index of found element. */ + clrjl %r4,%r0,.Lfast_loop_found2 /* If found index is within loaded + bytes, return with found element + index (=equal count). */ + + /* Align s to 16 byte. */ + risbgn %r4,%r2,60,128+63,0 /* %r3 = bits 60-63 of %r2 'and' 15. */ + lghi %r1,16 /* current_len = 16. */ + slr %r1,%r4 /* Compute bytes to 16bytes boundary. */ + + /* Process s in 16byte aligned loop. */ +.Lfast_loop: + vl %v16,0(%r1,%r2) /* Load search-string. */ + vfaezfs %v18,%v16,%v17,0 /* Find first element in v16 equal to any + in v17 or first zero element. */ + jno .Lfast_loop_found + + vl %v16,16(%r1,%r2) + vfaezfs %v18,%v16,%v17,0 + jno .Lfast_loop_found16 + + vl %v16,32(%r1,%r2) + vfaezfs %v18,%v16,%v17,0 + jno .Lfast_loop_found32 + + vl %v16,48(%r1,%r2) + vfaezfs %v18,%v16,%v17,0 + jno .Lfast_loop_found48 + + aghi %r1,64 + j .Lfast_loop /* Loop if no element was unequal to reject + and not zero. */ + + /* Found equal or zero element. */ +.Lfast_loop_found48: + aghi %r1,16 +.Lfast_loop_found32: + aghi %r1,16 +.Lfast_loop_found16: + aghi %r1,16 +.Lfast_loop_found: + vlgvb %r4,%v18,7 /* Load byte index of found element or zero. */ +.Lfast_loop_found2: + algrk %r2,%r1,%r4 /* Add found index to current len. */ + srlg %r2,%r2,2 /* Convert byte-count to character-count. */ + br %r14 + + + + /* + Search s for reject in multiple vregs + ------------------------------------- + */ +.Lslow: + /* Save registers. */ + vlvgg %v30,%r6,0 + vlvgp %v31,%r8,%r9 + + /* Reject in v17 without zero. */ + vlr %v19,%v17 /* Save first acc-part for a fast reload. */ + vzero %v20 /* Zero for preparing acc-vector. */ + vone %v24 /* One for checking result of former + string-part. */ + + /* Align s to 16 byte. */ + risbg %r4,%r2,60,128+63,0 /* Test if s is aligned and + %r4 = bits 60-63 'and' 15. */ + je .Lslow_loop_str /* If s is aligned, loop aligned. */ + lghi %r0,15 + slr %r0,%r4 /* Compute highest index to load (15-x). */ + vll %v16,%r0,0(%r2) /* Load up to 16byte boundary (vll needs + highest index, remaining bytes are 0). */ + ahi %r0,1 /* Work with loaded byte count. */ + vzero %v21 /* Zero out global mask. */ + lghi %r5,0 /* Set current len of reject-string to zero. */ + vfenezf %v18,%v16,%v16 /* Find zero in current string-part. */ + lghi %r8,0 /* There is no zero in first reject-part. */ + vlgvb %r6,%v18,7 /* Load byte index of zero or 16 if no zero. */ + clije %r6,0,.Lslow_end /* If first element is zero -> return 0. */ + clr %r0,%r6 /* cc==1 if loaded byte count < zero-index. */ + locrl %r6,%r0 /* Load on cc==1; zero-index = lbc. */ + j .Lslow_loop_acc + + + /* Process s in 16byte aligned loop. */ +.Lslow_next_str: + /* Check results of former processed str-part. */ + vfeef %v18,%v21,%v24 /* Find first equal match in global mask + (ones in element). */ + vlgvb %r4,%v18,7 /* Get index of first one (=equal) or 16. */ + /* Equal-index < min(zero-index, loaded byte count) + -> Return pointer to equal element. */ + clrjl %r4,%r6,.Lslow_index_found + /* Zero-index < loaded byte count + -> Former str-part was last str-part + -> Return null */ + clrjl %r6,%r0,.Lslow_end_not_found + + /* All elements are zero (=no match) -> proceed with next str-part. */ + vlr %v17,%v19 /* Load first part of reject (no zero). */ + algfr %r1,%r0 /* Add loaded byte count to current len. */ + +.Lslow_loop_str: + vl %v16,0(%r1,%r2) /* Load search-string. */ + lghi %r0,16 /* Loaded byte count is 16. */ + vzero %v21 /* Zero out global mask. */ + lghi %r5,0 /* Set current len of reject to zero. */ + vfenezf %v18,%v16,%v16 /* Find zero in current string-part. */ + lghi %r8,0 /* There is no zero in first reject-part. */ + vlgvb %r6,%v18,7 /* Load byte index of zero or 16 if no zero. */ + clije %r6,0,.Lslow_end /* If first element is zero (end of string) + -> Return current length. */ + +.Lslow_loop_acc: + vfaef %v22,%v16,%v17,4 /* Create matching-mask (1 in mask -> + Character matches any rejected character in + this reject-string-part) IN=0, RT=1. */ + vlgvf %r4,%v22,0 /* Get result of first element. */ + /* First element is equal to any rejected characters? + (All other parts of reject cannot lead to a match before this one) + -> Return current len, which is pointing to this element. */ + clijh %r4,0,.Lslow_end + vo %v21,%v21,%v22 /* Global-mask = global-|matching-mask. */ + /* Proceed with next acc until end of acc is reached. */ + + +.Lslow_next_acc: + clijh %r8,0,.Lslow_next_str /* There was a zero in last reject-part + -> Add found index to current len + and end. */ + vlbb %v17,16(%r5,%r3),6 /* Load next reject part. */ + aghi %r5,16 /* Increment current len of reject-string. */ + lcbb %r9,0(%r5,%r3),6 /* Get loaded byte count of reject-string. */ + jo .Lslow_next_acc_onbb /* Jump away if reject-string is + on block-boundary. */ +.Lslow_next_acc_notonbb: + vistrfs %v17,%v17 /* Fill with zeros after first zero. */ + jo .Lslow_loop_acc /* No zero found -> no preparation needed. */ + +.Lslow_next_acc_prepare_zero: + /* Zero in reject-part: fill zeros with first-reject-character. */ + vlgvf %r8,%v17,0 /* Load first element of reject-part. */ + clije %r8,0,.Lslow_next_str /* Process next str-part if first + character in this part of reject + is a zero. */ + /* r8>0 -> zero found in this acc-part. */ + vrepf %v18,%v17,0 /* Replicate first char accross all chars. */ + vceqf %v22,%v20,%v17 /* Create a mask (v22) of null chars + by comparing with 0 (v20). */ + vsel %v17,%v18,%v17,%v22 /* Replace null chars with first char. */ + j .Lslow_loop_acc /* Reject-string part is prepared. */ + +.Lslow_next_acc_onbb: + nill %r9,65532 /* Recognize only fully loaded characters. */ + je .Lslow_next_acc_onbb2 /* Reload vr, if no full wchar_t + loaded. */ + vfenezf %v18,%v17,%v17 /* Find zero in loaded bytes of reject part. */ + vlgvb %r8,%v18,7 /* Load byte index of zero. */ + clrjl %r8,%r9,.Lslow_next_acc_notonbb /* Found a zero in loaded bytes + -> Prepare vreg. */ +.Lslow_next_acc_onbb2: + vl %v17,0(%r5,%r3) /* Load over boundary ... */ + lghi %r8,0 /* r8=0 -> no zero in this part of acc, + check for zero is in jump-target. */ + j .Lslow_next_acc_notonbb /* ... and search for zero in + fully loaded vreg again. */ + +.Lslow_end_not_found: + algfr %r1,%r6 /* Add zero-index to current len. */ + j .Lslow_end +.Lslow_index_found: + algfr %r1,%r4 /* Add found index of char to current len. */ +.Lslow_end: + srlg %r2,%r1,2 /* Convert byte-count to character-count. */ + /* Restore registers. */ + vlgvg %r6,%v30,0 + vlgvg %r8,%v31,0 + vlgvg %r9,%v31,1 + br %r14 +.Lfallback: + jg __wcscspn_c +END(__wcscspn_vx) +#endif /* HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc) */ Index: glibc-2.22/sysdeps/s390/multiarch/wcscspn.c =================================================================== --- /dev/null +++ glibc-2.22/sysdeps/s390/multiarch/wcscspn.c @@ -0,0 +1,27 @@ +/* Multiple versions of wcscspn. + 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 (__wcscspn, wcscspn) + +#else +# include <wcsmbs/wcscspn.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 +44,8 @@ routines := wcscat wcschr wcscmp wcscpy mbrtoc16 c16rtomb strop-tests := wcscmp wcsncmp wmemcmp wcslen wcschr wcsrchr wcscpy wcsnlen \ - wcpcpy wcsncpy wcpncpy wcscat wcsncat wcschrnul wcsspn wcspbrk + wcpcpy wcsncpy wcpncpy wcscat wcsncat wcschrnul wcsspn wcspbrk \ + wcscspn 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-wcscspn.c =================================================================== --- /dev/null +++ glibc-2.22/wcsmbs/test-wcscspn.c @@ -0,0 +1,20 @@ +/* Test wcscspn 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-strcspn.c" Index: glibc-2.22/wcsmbs/wcscspn.c =================================================================== --- glibc-2.22.orig/wcsmbs/wcscspn.c +++ glibc-2.22/wcsmbs/wcscspn.c @@ -18,6 +18,9 @@ #include <wchar.h> +#ifdef WCSCSPN +# define wcscspn WCSCSPN +#endif /* Return the length of the maximum initial segment of WCS which contains only wide-characters not in REJECT. */
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