From 3459e23dd4ae4aa8999df7111d833a0bb9add7cd Mon Sep 17 00:00:00 2001 From: Stefan Liebler Date: Tue, 18 Dec 2018 13:57:21 +0100 Subject: S390: Refactor wcscmp ifunc handling. The ifunc handling for wcscmp is adjusted in order to omit ifunc variants if those will never be used as the minimum architecture level already supports newer CPUs by default. Glibc internal calls will then also use the "newer" ifunc variant. ChangeLog: * sysdeps/s390/multiarch/Makefile (sysdep_routines): Remove wcscmp variants. * sysdeps/s390/Makefile (sysdep_routines): Add wcscmp variants. * sysdeps/s390/multiarch/ifunc-impl-list.c (__libc_ifunc_impl_list): Refactor ifunc handling for wcscmp. * sysdeps/s390/multiarch/wcscmp-c.c: Move to ... * sysdeps/s390/wcscmp-c.c: ... here and adjust ifunc handling. * sysdeps/s390/multiarch/wcscmp-vx.S: Move to ... * sysdeps/s390/wcscmp-vx.S: ... here and adjust ifunc handling. * sysdeps/s390/multiarch/wcscmp.c: Move to ... * sysdeps/s390/wcscmp.c: ... here and adjust ifunc handling. * sysdeps/s390/ifunc-wcscmp.h: New file. --- ChangeLog | 15 ++++ sysdeps/s390/Makefile | 3 +- sysdeps/s390/ifunc-wcscmp.h | 52 ++++++++++++ sysdeps/s390/multiarch/Makefile | 3 +- sysdeps/s390/multiarch/ifunc-impl-list.c | 15 +++- sysdeps/s390/multiarch/wcscmp-c.c | 32 ------- sysdeps/s390/multiarch/wcscmp-vx.S | 131 ---------------------------- sysdeps/s390/multiarch/wcscmp.c | 30 ------- sysdeps/s390/wcscmp-c.c | 34 ++++++++ sysdeps/s390/wcscmp-vx.S | 141 +++++++++++++++++++++++++++++++ sysdeps/s390/wcscmp.c | 41 +++++++++ 11 files changed, 299 insertions(+), 198 deletions(-) create mode 100644 sysdeps/s390/ifunc-wcscmp.h delete mode 100644 sysdeps/s390/multiarch/wcscmp-c.c delete mode 100644 sysdeps/s390/multiarch/wcscmp-vx.S delete mode 100644 sysdeps/s390/multiarch/wcscmp.c create mode 100644 sysdeps/s390/wcscmp-c.c create mode 100644 sysdeps/s390/wcscmp-vx.S create mode 100644 sysdeps/s390/wcscmp.c diff --git a/ChangeLog b/ChangeLog index ed7c24b77e..792ee9ea80 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,18 @@ +2018-12-18 Stefan Liebler + + * sysdeps/s390/multiarch/Makefile + (sysdep_routines): Remove wcscmp variants. + * sysdeps/s390/Makefile (sysdep_routines): Add wcscmp variants. + * sysdeps/s390/multiarch/ifunc-impl-list.c + (__libc_ifunc_impl_list): Refactor ifunc handling for wcscmp. + * sysdeps/s390/multiarch/wcscmp-c.c: Move to ... + * sysdeps/s390/wcscmp-c.c: ... here and adjust ifunc handling. + * sysdeps/s390/multiarch/wcscmp-vx.S: Move to ... + * sysdeps/s390/wcscmp-vx.S: ... here and adjust ifunc handling. + * sysdeps/s390/multiarch/wcscmp.c: Move to ... + * sysdeps/s390/wcscmp.c: ... here and adjust ifunc handling. + * sysdeps/s390/ifunc-wcscmp.h: New file. + 2018-12-18 Stefan Liebler * sysdeps/s390/multiarch/Makefile diff --git a/sysdeps/s390/Makefile b/sysdeps/s390/Makefile index cb8dd2134f..00398ba6c2 100644 --- a/sysdeps/s390/Makefile +++ b/sysdeps/s390/Makefile @@ -90,5 +90,6 @@ sysdep_routines += wcslen wcslen-vx wcslen-c \ wcsncpy wcsncpy-vx wcsncpy-c \ wcpncpy wcpncpy-vx wcpncpy-c \ wcscat wcscat-vx wcscat-c \ - wcsncat wcsncat-vx wcsncat-c + wcsncat wcsncat-vx wcsncat-c \ + wcscmp wcscmp-vx wcscmp-c endif diff --git a/sysdeps/s390/ifunc-wcscmp.h b/sysdeps/s390/ifunc-wcscmp.h new file mode 100644 index 0000000000..99fe021302 --- /dev/null +++ b/sysdeps/s390/ifunc-wcscmp.h @@ -0,0 +1,52 @@ +/* wcscmp variant information on S/390 version. + Copyright (C) 2018 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 + . */ + +#if defined USE_MULTIARCH && IS_IN (libc) \ + && ! defined HAVE_S390_MIN_Z13_ZARCH_ASM_SUPPORT +# define HAVE_WCSCMP_IFUNC 1 +#else +# define HAVE_WCSCMP_IFUNC 0 +#endif + +#ifdef HAVE_S390_VX_ASM_SUPPORT +# define HAVE_WCSCMP_IFUNC_AND_VX_SUPPORT HAVE_WCSCMP_IFUNC +#else +# define HAVE_WCSCMP_IFUNC_AND_VX_SUPPORT 0 +#endif + +#if defined HAVE_S390_MIN_Z13_ZARCH_ASM_SUPPORT +# define WCSCMP_DEFAULT WCSCMP_Z13 +# define HAVE_WCSCMP_C 0 +# define HAVE_WCSCMP_Z13 1 +#else +# define WCSCMP_DEFAULT WCSCMP_C +# define HAVE_WCSCMP_C 1 +# define HAVE_WCSCMP_Z13 HAVE_WCSCMP_IFUNC_AND_VX_SUPPORT +#endif + +#if HAVE_WCSCMP_C +# define WCSCMP_C __wcscmp_c +#else +# define WCSCMP_C NULL +#endif + +#if HAVE_WCSCMP_Z13 +# define WCSCMP_Z13 __wcscmp_vx +#else +# define WCSCMP_Z13 NULL +#endif diff --git a/sysdeps/s390/multiarch/Makefile b/sysdeps/s390/multiarch/Makefile index 6cb75950c2..70162d0eaa 100644 --- a/sysdeps/s390/multiarch/Makefile +++ b/sysdeps/s390/multiarch/Makefile @@ -1,6 +1,5 @@ ifeq ($(subdir),wcsmbs) -sysdep_routines += wcscmp wcscmp-vx wcscmp-c \ - wcsncmp wcsncmp-vx wcsncmp-c \ +sysdep_routines += wcsncmp wcsncmp-vx wcsncmp-c \ wcschr wcschr-vx wcschr-c \ wcschrnul wcschrnul-vx wcschrnul-c \ wcsrchr wcsrchr-vx wcsrchr-c \ diff --git a/sysdeps/s390/multiarch/ifunc-impl-list.c b/sysdeps/s390/multiarch/ifunc-impl-list.c index 7b7b1e7497..f461063c80 100644 --- a/sysdeps/s390/multiarch/ifunc-impl-list.c +++ b/sysdeps/s390/multiarch/ifunc-impl-list.c @@ -54,6 +54,7 @@ #include #include #include +#include /* Maximum number of IFUNC implementations. */ #define MAX_IFUNC 3 @@ -528,6 +529,18 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array, ) #endif /* HAVE_WCSNCAT_IFUNC */ +#if HAVE_WCSCMP_IFUNC + IFUNC_IMPL (i, name, wcscmp, +# if HAVE_WCSCMP_Z13 + IFUNC_IMPL_ADD (array, i, wcscmp, + dl_hwcap & HWCAP_S390_VX, WCSCMP_Z13) +# endif +# if HAVE_WCSCMP_C + IFUNC_IMPL_ADD (array, i, wcscmp, 1, WCSCMP_C) +# endif + ) +#endif /* HAVE_WCSCMP_IFUNC */ + #ifdef HAVE_S390_VX_ASM_SUPPORT # define IFUNC_VX_IMPL(FUNC) \ @@ -536,8 +549,6 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array, __##FUNC##_vx) \ IFUNC_IMPL_ADD (array, i, FUNC, 1, __##FUNC##_c)) - IFUNC_VX_IMPL (wcscmp); - IFUNC_VX_IMPL (wcsncmp); IFUNC_VX_IMPL (wcschr); diff --git a/sysdeps/s390/multiarch/wcscmp-c.c b/sysdeps/s390/multiarch/wcscmp-c.c deleted file mode 100644 index ce0817ae97..0000000000 --- a/sysdeps/s390/multiarch/wcscmp-c.c +++ /dev/null @@ -1,32 +0,0 @@ -/* Default wcscmp implementation for S/390. - Copyright (C) 2015-2018 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 - . */ - -#if defined HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc) -# define WCSCMP __wcscmp_c - -# include -extern __typeof (wcscmp) __wcscmp_c; -# undef weak_alias -# define weak_alias(name, alias) -# ifdef SHARED -# undef libc_hidden_def -# define libc_hidden_def(name) \ - __hidden_ver1 (__wcscmp_c, __GI___wcscmp, __wcscmp_c); -# endif /* SHARED */ -# include -#endif /* HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc) */ diff --git a/sysdeps/s390/multiarch/wcscmp-vx.S b/sysdeps/s390/multiarch/wcscmp-vx.S deleted file mode 100644 index 14267dbfc7..0000000000 --- a/sysdeps/s390/multiarch/wcscmp-vx.S +++ /dev/null @@ -1,131 +0,0 @@ -/* Vector optimized 32/64 bit S/390 version of wcscmp. - Copyright (C) 2015-2018 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 - . */ - -#if defined HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc) - -# include "sysdep.h" -# include "asm-syntax.h" - - .text - -/* int wcscmp (const wchar_t *s1, const wchar_t *s2) - Compare two strings - - Register usage: - -r1=loaded byte count s1 - -r2=s1 - -r3=s2 - -r4=loaded byte coutn s2, tmp - -r5=current_len - -v16=part of s1 - -v17=part of s2 - -v18=index of unequal -*/ -ENTRY(__wcscmp_vx) - .machine "z13" - .machinemode "zarch_nohighgprs" - - lghi %r5,0 /* current_len = 0. */ - -.Lloop: - vlbb %v16,0(%r5,%r2),6 /* Load s1 to block boundary. */ - vlbb %v17,0(%r5,%r3),6 /* Load s2 to block boundary. */ - lcbb %r1,0(%r5,%r2),6 /* Get loaded byte count of s1. */ - jo .Llt16_1 /* Jump away if vr is not fully loaded. */ - lcbb %r4,0(%r5,%r3),6 - jo .Llt16_2 /* Jump away if vr is not fully loaded. */ - /* Both vrs are fully loaded. */ - aghi %r5,16 - vfenezfs %v18,%v16,%v17 /* Compare not equal with zero search. */ - jno .Lfound - - vlbb %v16,0(%r5,%r2),6 - vlbb %v17,0(%r5,%r3),6 - lcbb %r1,0(%r5,%r2),6 - jo .Llt16_1 - lcbb %r4,0(%r5,%r3),6 - jo .Llt16_2 - aghi %r5,16 - vfenezfs %v18,%v16,%v17 - jno .Lfound - - vlbb %v16,0(%r5,%r2),6 - vlbb %v17,0(%r5,%r3),6 - lcbb %r1,0(%r5,%r2),6 - jo .Llt16_1 - lcbb %r4,0(%r5,%r3),6 - jo .Llt16_2 - aghi %r5,16 - vfenezfs %v18,%v16,%v17 - jno .Lfound - - vlbb %v16,0(%r5,%r2),6 - vlbb %v17,0(%r5,%r3),6 - lcbb %r1,0(%r5,%r2),6 - jo .Llt16_1 - lcbb %r4,0(%r5,%r3),6 - jo .Llt16_2 - aghi %r5,16 - vfenezfs %v18,%v16,%v17 - jno .Lfound - j .Lloop - -.Lcmp_one_char: - /* At least one of both strings is not 4-byte aligned - and there is no full character before next block-boundary. - Compare one character to get over the boundary and - proceed with normal loop! */ - vlef %v16,0(%r5,%r2),0 /* Load one character. */ - vlef %v17,0(%r5,%r3),0 - lghi %r1,4 /* Loaded byte count is 4. */ - j .Llt_cmp /* Proceed with comparision. */ - -.Llt16_1: - lcbb %r4,0(%r5,%r3),6 /* Get loaded byte count of s2. */ -.Llt16_2: - clr %r1,%r4 - locrh %r1,%r4 /* Get minimum of bytes loaded in s1/2. */ - nill %r1,65532 /* Align bytes loaded to full characters. */ - jz .Lcmp_one_char /* Jump away if no full char is available. */ -.Llt_cmp: - algfr %r5,%r1 /* Add smallest loaded bytes to current_len. */ - vfenezfs %v18,%v16,%v17 /* Compare not equal with zero search. */ - vlgvb %r4,%v18,7 /* Get not equal index or 16 if all equal. */ - clrjl %r4,%r1,.Lfound /* Jump away if miscompare is within loaded - bytes. */ - j .Lloop - -.Lfound: - /* vfenezf found an unequal element or zero. - This instruction compares unsigned words, but wchar_t is signed. - Thus we have to compare the found element again. */ - vlgvb %r4,%v18,7 /* Extract not equal byte-index, */ - srl %r4,2 /* Convert it to character-index. */ - vlgvf %r3,%v16,0(%r4) /* Load character-values. */ - vlgvf %r4,%v17,0(%r4) - cr %r3,%r4 - je .Lend_equal - lghi %r2,1 - lghi %r1,-1 - locgrl %r2,%r1 - br %r14 -.Lend_equal: - lghi %r2,0 - br %r14 -END(__wcscmp_vx) -#endif /* HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc) */ diff --git a/sysdeps/s390/multiarch/wcscmp.c b/sysdeps/s390/multiarch/wcscmp.c deleted file mode 100644 index 5ee0fd4d88..0000000000 --- a/sysdeps/s390/multiarch/wcscmp.c +++ /dev/null @@ -1,30 +0,0 @@ -/* Multiple versions of wcscmp. - Copyright (C) 2015-2018 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 - . */ - -#if defined HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc) -# define __wcscmp __redirect___wcscmp -# include -# undef __wcscmp -# include - -s390_vx_libc_ifunc_redirected (__redirect___wcscmp, __wcscmp) -weak_alias (__wcscmp, wcscmp) - -#else -# include -#endif /* !(defined HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc)) */ diff --git a/sysdeps/s390/wcscmp-c.c b/sysdeps/s390/wcscmp-c.c new file mode 100644 index 0000000000..643ba7a682 --- /dev/null +++ b/sysdeps/s390/wcscmp-c.c @@ -0,0 +1,34 @@ +/* Default wcscmp implementation for S/390. + Copyright (C) 2015-2018 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 + . */ + +#include + +#if HAVE_WCSCMP_C +# if HAVE_WCSCMP_IFUNC +# define WCSCMP WCSCMP_C +# undef weak_alias +# define weak_alias(name, alias) +# if defined SHARED && IS_IN (libc) +# undef libc_hidden_def +# define libc_hidden_def(name) \ + __hidden_ver1 (__wcscmp_c, __GI___wcscmp, __wcscmp_c); +# endif +# endif + +# include +#endif diff --git a/sysdeps/s390/wcscmp-vx.S b/sysdeps/s390/wcscmp-vx.S new file mode 100644 index 0000000000..a2789d8a69 --- /dev/null +++ b/sysdeps/s390/wcscmp-vx.S @@ -0,0 +1,141 @@ +/* Vector optimized 32/64 bit S/390 version of wcscmp. + Copyright (C) 2015-2018 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 + . */ + +#include +#if HAVE_WCSCMP_Z13 + +# include "sysdep.h" +# include "asm-syntax.h" + + .text + +/* int wcscmp (const wchar_t *s1, const wchar_t *s2) + Compare two strings + + Register usage: + -r1=loaded byte count s1 + -r2=s1 + -r3=s2 + -r4=loaded byte coutn s2, tmp + -r5=current_len + -v16=part of s1 + -v17=part of s2 + -v18=index of unequal +*/ +ENTRY(WCSCMP_Z13) + .machine "z13" + .machinemode "zarch_nohighgprs" + + lghi %r5,0 /* current_len = 0. */ + +.Lloop: + vlbb %v16,0(%r5,%r2),6 /* Load s1 to block boundary. */ + vlbb %v17,0(%r5,%r3),6 /* Load s2 to block boundary. */ + lcbb %r1,0(%r5,%r2),6 /* Get loaded byte count of s1. */ + jo .Llt16_1 /* Jump away if vr is not fully loaded. */ + lcbb %r4,0(%r5,%r3),6 + jo .Llt16_2 /* Jump away if vr is not fully loaded. */ + /* Both vrs are fully loaded. */ + aghi %r5,16 + vfenezfs %v18,%v16,%v17 /* Compare not equal with zero search. */ + jno .Lfound + + vlbb %v16,0(%r5,%r2),6 + vlbb %v17,0(%r5,%r3),6 + lcbb %r1,0(%r5,%r2),6 + jo .Llt16_1 + lcbb %r4,0(%r5,%r3),6 + jo .Llt16_2 + aghi %r5,16 + vfenezfs %v18,%v16,%v17 + jno .Lfound + + vlbb %v16,0(%r5,%r2),6 + vlbb %v17,0(%r5,%r3),6 + lcbb %r1,0(%r5,%r2),6 + jo .Llt16_1 + lcbb %r4,0(%r5,%r3),6 + jo .Llt16_2 + aghi %r5,16 + vfenezfs %v18,%v16,%v17 + jno .Lfound + + vlbb %v16,0(%r5,%r2),6 + vlbb %v17,0(%r5,%r3),6 + lcbb %r1,0(%r5,%r2),6 + jo .Llt16_1 + lcbb %r4,0(%r5,%r3),6 + jo .Llt16_2 + aghi %r5,16 + vfenezfs %v18,%v16,%v17 + jno .Lfound + j .Lloop + +.Lcmp_one_char: + /* At least one of both strings is not 4-byte aligned + and there is no full character before next block-boundary. + Compare one character to get over the boundary and + proceed with normal loop! */ + vlef %v16,0(%r5,%r2),0 /* Load one character. */ + vlef %v17,0(%r5,%r3),0 + lghi %r1,4 /* Loaded byte count is 4. */ + j .Llt_cmp /* Proceed with comparision. */ + +.Llt16_1: + lcbb %r4,0(%r5,%r3),6 /* Get loaded byte count of s2. */ +.Llt16_2: + clr %r1,%r4 + locrh %r1,%r4 /* Get minimum of bytes loaded in s1/2. */ + nill %r1,65532 /* Align bytes loaded to full characters. */ + jz .Lcmp_one_char /* Jump away if no full char is available. */ +.Llt_cmp: + algfr %r5,%r1 /* Add smallest loaded bytes to current_len. */ + vfenezfs %v18,%v16,%v17 /* Compare not equal with zero search. */ + vlgvb %r4,%v18,7 /* Get not equal index or 16 if all equal. */ + clrjl %r4,%r1,.Lfound /* Jump away if miscompare is within loaded + bytes. */ + j .Lloop + +.Lfound: + /* vfenezf found an unequal element or zero. + This instruction compares unsigned words, but wchar_t is signed. + Thus we have to compare the found element again. */ + vlgvb %r4,%v18,7 /* Extract not equal byte-index, */ + srl %r4,2 /* Convert it to character-index. */ + vlgvf %r3,%v16,0(%r4) /* Load character-values. */ + vlgvf %r4,%v17,0(%r4) + cr %r3,%r4 + je .Lend_equal + lghi %r2,1 + lghi %r1,-1 + locgrl %r2,%r1 + br %r14 +.Lend_equal: + lghi %r2,0 + br %r14 +END(WCSCMP_Z13) + +# if ! HAVE_WCSCMP_IFUNC +strong_alias (WCSCMP_Z13, __wcscmp) +weak_alias (__wcscmp, wcscmp) +# endif + +# if ! HAVE_WCSCMP_C && defined SHARED && IS_IN (libc) +strong_alias (WCSCMP_Z13, __GI___wcscmp) +# endif +#endif diff --git a/sysdeps/s390/wcscmp.c b/sysdeps/s390/wcscmp.c new file mode 100644 index 0000000000..769c73506e --- /dev/null +++ b/sysdeps/s390/wcscmp.c @@ -0,0 +1,41 @@ +/* Multiple versions of wcscmp. + Copyright (C) 2015-2018 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 + . */ + +#include + +#if HAVE_WCSCMP_IFUNC +# define __wcscmp __redirect___wcscmp +# include +# undef __wcscmp +# include + +# if HAVE_WCSCMP_C +extern __typeof (__redirect___wcscmp) WCSCMP_C attribute_hidden; +# endif + +# if HAVE_WCSCMP_Z13 +extern __typeof (__redirect___wcscmp) WCSCMP_Z13 attribute_hidden; +# endif + +s390_libc_ifunc_expr (__redirect___wcscmp, __wcscmp, + (HAVE_WCSCMP_Z13 && (hwcap & HWCAP_S390_VX)) + ? WCSCMP_Z13 + : WCSCMP_DEFAULT + ) +weak_alias (__wcscmp, wcscmp) +#endif -- cgit 1.4.1