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File _service:tar_scm:Loongarch-Add-ifunc-support-for-strchr-aligned-lsx-l.patch of Package glibc
From aca7d7f0dde5f56344e8e58e5f6648c96bb1f1cc Mon Sep 17 00:00:00 2001 From: dengjianbo <dengjianbo@loongson.cn> Date: Tue, 15 Aug 2023 09:08:11 +0800 Subject: [PATCH 06/29] Loongarch: Add ifunc support for strchr{aligned, lsx, lasx} and strchrnul{aligned, lsx, lasx} These implementations improve the time to run strchr{nul} microbenchmark in glibc as below: strchr-lasx reduces the runtime about 50%-83% strchr-lsx reduces the runtime about 30%-67% strchr-aligned reduces the runtime about 10%-20% strchrnul-lasx reduces the runtime about 50%-83% strchrnul-lsx reduces the runtime about 36%-65% strchrnul-aligned reduces the runtime about 6%-10% Signed-off-by: Peng Fan <fanpeng@loongson.cn> Signed-off-by: ticat_fp <fanpeng@loongson.cn> --- sysdeps/loongarch/lp64/multiarch/Makefile | 6 ++ .../lp64/multiarch/ifunc-impl-list.c | 16 +++ .../loongarch/lp64/multiarch/ifunc-strchr.h | 41 ++++++++ .../lp64/multiarch/ifunc-strchrnul.h | 41 ++++++++ .../loongarch/lp64/multiarch/strchr-aligned.S | 99 +++++++++++++++++++ .../loongarch/lp64/multiarch/strchr-lasx.S | 91 +++++++++++++++++ sysdeps/loongarch/lp64/multiarch/strchr-lsx.S | 73 ++++++++++++++ sysdeps/loongarch/lp64/multiarch/strchr.c | 36 +++++++ .../lp64/multiarch/strchrnul-aligned.S | 95 ++++++++++++++++++ .../loongarch/lp64/multiarch/strchrnul-lasx.S | 22 +++++ .../loongarch/lp64/multiarch/strchrnul-lsx.S | 22 +++++ sysdeps/loongarch/lp64/multiarch/strchrnul.c | 39 ++++++++ 12 files changed, 581 insertions(+) create mode 100644 sysdeps/loongarch/lp64/multiarch/ifunc-strchr.h create mode 100644 sysdeps/loongarch/lp64/multiarch/ifunc-strchrnul.h create mode 100644 sysdeps/loongarch/lp64/multiarch/strchr-aligned.S create mode 100644 sysdeps/loongarch/lp64/multiarch/strchr-lasx.S create mode 100644 sysdeps/loongarch/lp64/multiarch/strchr-lsx.S create mode 100644 sysdeps/loongarch/lp64/multiarch/strchr.c create mode 100644 sysdeps/loongarch/lp64/multiarch/strchrnul-aligned.S create mode 100644 sysdeps/loongarch/lp64/multiarch/strchrnul-lasx.S create mode 100644 sysdeps/loongarch/lp64/multiarch/strchrnul-lsx.S create mode 100644 sysdeps/loongarch/lp64/multiarch/strchrnul.c diff --git a/sysdeps/loongarch/lp64/multiarch/Makefile b/sysdeps/loongarch/lp64/multiarch/Makefile index 76c506c9..110a8c5c 100644 --- a/sysdeps/loongarch/lp64/multiarch/Makefile +++ b/sysdeps/loongarch/lp64/multiarch/Makefile @@ -3,5 +3,11 @@ sysdep_routines += \ strlen-aligned \ strlen-lsx \ strlen-lasx \ + strchr-aligned \ + strchr-lsx \ + strchr-lasx \ + strchrnul-aligned \ + strchrnul-lsx \ + strchrnul-lasx \ # sysdep_routines endif diff --git a/sysdeps/loongarch/lp64/multiarch/ifunc-impl-list.c b/sysdeps/loongarch/lp64/multiarch/ifunc-impl-list.c index 1a2a576f..c7164b45 100644 --- a/sysdeps/loongarch/lp64/multiarch/ifunc-impl-list.c +++ b/sysdeps/loongarch/lp64/multiarch/ifunc-impl-list.c @@ -37,5 +37,21 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array, #endif IFUNC_IMPL_ADD (array, i, strlen, 1, __strlen_aligned) ) + + IFUNC_IMPL (i, name, strchr, +#if !defined __loongarch_soft_float + IFUNC_IMPL_ADD (array, i, strchr, SUPPORT_LASX, __strchr_lasx) + IFUNC_IMPL_ADD (array, i, strchr, SUPPORT_LSX, __strchr_lsx) +#endif + IFUNC_IMPL_ADD (array, i, strchr, 1, __strchr_aligned) + ) + + IFUNC_IMPL (i, name, strchrnul, +#if !defined __loongarch_soft_float + IFUNC_IMPL_ADD (array, i, strchrnul, SUPPORT_LASX, __strchrnul_lasx) + IFUNC_IMPL_ADD (array, i, strchrnul, SUPPORT_LSX, __strchrnul_lsx) +#endif + IFUNC_IMPL_ADD (array, i, strchrnul, 1, __strchrnul_aligned) + ) return i; } diff --git a/sysdeps/loongarch/lp64/multiarch/ifunc-strchr.h b/sysdeps/loongarch/lp64/multiarch/ifunc-strchr.h new file mode 100644 index 00000000..4494db79 --- /dev/null +++ b/sysdeps/loongarch/lp64/multiarch/ifunc-strchr.h @@ -0,0 +1,41 @@ +/* Common definition for strchr ifunc selections. + All versions must be listed in ifunc-impl-list.c. + Copyright (C) 2023 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 + <https://www.gnu.org/licenses/>. */ + +#include <ldsodefs.h> +#include <ifunc-init.h> + +#if !defined __loongarch_soft_float +extern __typeof (REDIRECT_NAME) OPTIMIZE (lasx) attribute_hidden; +extern __typeof (REDIRECT_NAME) OPTIMIZE (lsx) attribute_hidden; +#endif + +extern __typeof (REDIRECT_NAME) OPTIMIZE (aligned) attribute_hidden; + +static inline void * +IFUNC_SELECTOR (void) +{ +#if !defined __loongarch_soft_float + if (SUPPORT_LASX) + return OPTIMIZE (lasx); + else if (SUPPORT_LSX) + return OPTIMIZE (lsx); + else +#endif + return OPTIMIZE (aligned); +} diff --git a/sysdeps/loongarch/lp64/multiarch/ifunc-strchrnul.h b/sysdeps/loongarch/lp64/multiarch/ifunc-strchrnul.h new file mode 100644 index 00000000..8a925120 --- /dev/null +++ b/sysdeps/loongarch/lp64/multiarch/ifunc-strchrnul.h @@ -0,0 +1,41 @@ +/* Common definition for strchrnul ifunc selections. + All versions must be listed in ifunc-impl-list.c. + Copyright (C) 2023 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 + <https://www.gnu.org/licenses/>. */ + +#include <ldsodefs.h> +#include <ifunc-init.h> + +#if !defined __loongarch_soft_float +extern __typeof (REDIRECT_NAME) OPTIMIZE (lasx) attribute_hidden; +extern __typeof (REDIRECT_NAME) OPTIMIZE (lsx) attribute_hidden; +#endif + +extern __typeof (REDIRECT_NAME) OPTIMIZE (aligned) attribute_hidden; + +static inline void * +IFUNC_SELECTOR (void) +{ +#if !defined __loongarch_soft_float + if (SUPPORT_LASX) + return OPTIMIZE (lasx); + else if (SUPPORT_LSX) + return OPTIMIZE (lsx); + else +#endif + return OPTIMIZE (aligned); +} diff --git a/sysdeps/loongarch/lp64/multiarch/strchr-aligned.S b/sysdeps/loongarch/lp64/multiarch/strchr-aligned.S new file mode 100644 index 00000000..5fb01806 --- /dev/null +++ b/sysdeps/loongarch/lp64/multiarch/strchr-aligned.S @@ -0,0 +1,99 @@ +/* Optimized strchr implementation using basic Loongarch instructions. + Copyright (C) 2023 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 + <https://www.gnu.org/licenses/>. */ + +#include <sysdep.h> +#include <sys/regdef.h> +#include <sys/asm.h> + +#if IS_IN (libc) +# define STRCHR_NAME __strchr_aligned +#else +# define STRCHR_NAME strchr +#endif + +LEAF(STRCHR_NAME, 6) + slli.d t1, a0, 3 + bstrins.d a0, zero, 2, 0 + lu12i.w a2, 0x01010 + ld.d t2, a0, 0 + + ori a2, a2, 0x101 + andi a1, a1, 0xff + bstrins.d a2, a2, 63, 32 + li.w t0, -1 + + mul.d a1, a1, a2 + sll.d t0, t0, t1 + slli.d a3, a2, 7 + orn t2, t2, t0 + + sll.d t3, a1, t1 + xor t4, t2, t3 + sub.d a4, t2, a2 + sub.d a5, t4, a2 + + + andn a4, a4, t2 + andn a5, a5, t4 + or t0, a4, a5 + and t0, t0, a3 + + bnez t0, L(end) + addi.d a0, a0, 8 +L(loop): + ld.d t4, a0, 0 + xor t2, t4, a1 + + sub.d a4, t4, a2 + sub.d a5, t2, a2 + andn a4, a4, t4 + andn a5, a5, t2 + + or t0, a4, a5 + and t0, t0, a3 + bnez t0, L(end) + ld.d t4, a0, 8 + + + addi.d a0, a0, 16 + xor t2, t4, a1 + sub.d a4, t4, a2 + sub.d a5, t2, a2 + + andn a4, a4, t4 + andn a5, a5, t2 + or t0, a4, a5 + and t0, t0, a3 + + beqz t0, L(loop) + addi.d a0, a0, -8 +L(end): + and t0, a5, a3 + and t1, a4, a3 + + ctz.d t0, t0 + ctz.d t1, t1 + srli.w t2, t0, 3 + sltu t3, t1, t0 + + + add.d a0, a0, t2 + masknez a0, a0, t3 + jr ra +END(STRCHR_NAME) diff --git a/sysdeps/loongarch/lp64/multiarch/strchr-lasx.S b/sysdeps/loongarch/lp64/multiarch/strchr-lasx.S new file mode 100644 index 00000000..254402da --- /dev/null +++ b/sysdeps/loongarch/lp64/multiarch/strchr-lasx.S @@ -0,0 +1,91 @@ +/* Optimized strchr implementation using loongarch LASX SIMD instructions. + Copyright (C) 2023 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 + <https://www.gnu.org/licenses/>. */ + +#include <sysdep.h> +#include <sys/regdef.h> +#include <sys/asm.h> + +#if IS_IN (libc) && !defined __loongarch_soft_float + +#ifndef AS_STRCHRNUL +# define STRCHR __strchr_lasx +#endif + +LEAF(STRCHR, 6) + andi t1, a0, 0x1f + bstrins.d a0, zero, 4, 0 + xvld xr0, a0, 0 + li.d t2, -1 + + xvreplgr2vr.b xr1, a1 + sll.d t1, t2, t1 + xvxor.v xr2, xr0, xr1 + xvmin.bu xr0, xr0, xr2 + + xvmsknz.b xr0, xr0 + xvpickve.w xr3, xr0, 4 + vilvl.h vr0, vr3, vr0 + movfr2gr.s t0, fa0 + + orn t0, t0, t1 + bne t0, t2, L(end) + addi.d a0, a0, 32 + nop + + +L(loop): + xvld xr0, a0, 0 + xvxor.v xr2, xr0, xr1 + xvmin.bu xr0, xr0, xr2 + xvsetanyeqz.b fcc0, xr0 + + bcnez fcc0, L(loop_end) + xvld xr0, a0, 32 + addi.d a0, a0, 64 + xvxor.v xr2, xr0, xr1 + + xvmin.bu xr0, xr0, xr2 + xvsetanyeqz.b fcc0, xr0 + bceqz fcc0, L(loop) + addi.d a0, a0, -32 + +L(loop_end): + xvmsknz.b xr0, xr0 + xvpickve.w xr1, xr0, 4 + vilvl.h vr0, vr1, vr0 + movfr2gr.s t0, fa0 + + +L(end): + cto.w t0, t0 + add.d a0, a0, t0 +#ifndef AS_STRCHRNUL + vreplgr2vr.b vr0, t0 + xvpermi.q xr3, xr2, 1 + + vshuf.b vr0, vr3, vr2, vr0 + vpickve2gr.bu t0, vr0, 0 + masknez a0, a0, t0 +#endif + jr ra + +END(STRCHR) + +libc_hidden_builtin_def(STRCHR) +#endif diff --git a/sysdeps/loongarch/lp64/multiarch/strchr-lsx.S b/sysdeps/loongarch/lp64/multiarch/strchr-lsx.S new file mode 100644 index 00000000..dae98b0a --- /dev/null +++ b/sysdeps/loongarch/lp64/multiarch/strchr-lsx.S @@ -0,0 +1,73 @@ +/* Optimized strlen implementation using loongarch LSX SIMD instructions. + Copyright (C) 2023 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 + <https://www.gnu.org/licenses/>. */ + +#include <sysdep.h> +#include <sys/regdef.h> +#include <sys/asm.h> + +#if IS_IN (libc) && !defined __loongarch_soft_float + +#ifndef AS_STRCHRNUL +# define STRCHR __strchr_lsx +#endif + +LEAF(STRCHR, 6) + andi t1, a0, 0xf + bstrins.d a0, zero, 3, 0 + vld vr0, a0, 0 + li.d t2, -1 + + vreplgr2vr.b vr1, a1 + sll.d t3, t2, t1 + vxor.v vr2, vr0, vr1 + vmin.bu vr0, vr0, vr2 + + vmsknz.b vr0, vr0 + movfr2gr.s t0, fa0 + ext.w.h t0, t0 + orn t0, t0, t3 + + beq t0, t2, L(loop) +L(found): + cto.w t0, t0 + add.d a0, a0, t0 +#ifndef AS_STRCHRNUL + vreplve.b vr2, vr2, t0 + vpickve2gr.bu t1, vr2, 0 + masknez a0, a0, t1 +#endif + jr ra + + +L(loop): + vld vr0, a0, 16 + addi.d a0, a0, 16 + vxor.v vr2, vr0, vr1 + vmin.bu vr0, vr0, vr2 + + vsetanyeqz.b fcc0, vr0 + bceqz fcc0, L(loop) + vmsknz.b vr0, vr0 + movfr2gr.s t0, fa0 + + b L(found) +END(STRCHR) + +libc_hidden_builtin_def (STRCHR) +#endif diff --git a/sysdeps/loongarch/lp64/multiarch/strchr.c b/sysdeps/loongarch/lp64/multiarch/strchr.c new file mode 100644 index 00000000..404e97bd --- /dev/null +++ b/sysdeps/loongarch/lp64/multiarch/strchr.c @@ -0,0 +1,36 @@ +/* Multiple versions of strchr. + All versions must be listed in ifunc-impl-list.c. + Copyright (C) 2023 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 + <https://www.gnu.org/licenses/>. */ + +/* Define multiple versions only for the definition in libc. */ +#if IS_IN (libc) +# define strchr __redirect_strchr +# include <string.h> +# undef strchr + +# define SYMBOL_NAME strchr +# include "ifunc-strchr.h" + +libc_ifunc_redirected (__redirect_strchr, strchr, IFUNC_SELECTOR ()); +weak_alias(strchr, index) +# ifdef SHARED +__hidden_ver1 (strchr, __GI_strchr, __redirect_strchr) + __attribute__ ((visibility ("hidden"))) __attribute_copy__ (strchr); +# endif + +#endif diff --git a/sysdeps/loongarch/lp64/multiarch/strchrnul-aligned.S b/sysdeps/loongarch/lp64/multiarch/strchrnul-aligned.S new file mode 100644 index 00000000..1c01a023 --- /dev/null +++ b/sysdeps/loongarch/lp64/multiarch/strchrnul-aligned.S @@ -0,0 +1,95 @@ +/* Optimized strchrnul implementation using basic Loongarch instructions. + Copyright (C) 2023 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 + <https://www.gnu.org/licenses/>. */ + +#include <sysdep.h> +#include <sys/regdef.h> +#include <sys/asm.h> + +#if IS_IN (libc) +# define STRCHRNUL_NAME __strchrnul_aligned +#else +# define STRCHRNUL_NAME __strchrnul +#endif + +LEAF(STRCHRNUL_NAME, 6) + slli.d t1, a0, 3 + bstrins.d a0, zero, 2, 0 + lu12i.w a2, 0x01010 + ld.d t2, a0, 0 + + ori a2, a2, 0x101 + andi a1, a1, 0xff + bstrins.d a2, a2, 63, 32 + li.w t0, -1 + + mul.d a1, a1, a2 + sll.d t0, t0, t1 + slli.d a3, a2, 7 + orn t2, t2, t0 + + sll.d t3, a1, t1 + xor t4, t2, t3 + sub.d a4, t2, a2 + sub.d a5, t4, a2 + + + andn a4, a4, t2 + andn a5, a5, t4 + or t0, a4, a5 + and t0, t0, a3 + + bnez t0, L(end) + addi.d a0, a0, 8 +L(loop): + ld.d t4, a0, 0 + xor t2, t4, a1 + + sub.d a4, t4, a2 + sub.d a5, t2, a2 + andn a4, a4, t4 + andn a5, a5, t2 + + or t0, a4, a5 + and t0, t0, a3 + bnez t0, L(end) + ld.d t4, a0, 8 + + + addi.d a0, a0, 16 + xor t2, t4, a1 + sub.d a4, t4, a2 + sub.d a5, t2, a2 + + andn a4, a4, t4 + andn a5, a5, t2 + or t0, a4, a5 + and t0, t0, a3 + + beqz t0, L(loop) + addi.d a0, a0, -8 +L(end): + ctz.d t0, t0 + srli.w t0, t0, 3 + + + add.d a0, a0, t0 + jr ra +END(STRCHRNUL_NAME) + +libc_hidden_builtin_def (STRCHRNUL_NAME) diff --git a/sysdeps/loongarch/lp64/multiarch/strchrnul-lasx.S b/sysdeps/loongarch/lp64/multiarch/strchrnul-lasx.S new file mode 100644 index 00000000..d45495e4 --- /dev/null +++ b/sysdeps/loongarch/lp64/multiarch/strchrnul-lasx.S @@ -0,0 +1,22 @@ +/* Optimized strchrnul implementation using loongarch LASX SIMD instructions. + Copyright (C) 2023 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 + <https://www.gnu.org/licenses/>. */ + +#define STRCHR __strchrnul_lasx +#define AS_STRCHRNUL +#include "strchr-lasx.S" diff --git a/sysdeps/loongarch/lp64/multiarch/strchrnul-lsx.S b/sysdeps/loongarch/lp64/multiarch/strchrnul-lsx.S new file mode 100644 index 00000000..07d793ae --- /dev/null +++ b/sysdeps/loongarch/lp64/multiarch/strchrnul-lsx.S @@ -0,0 +1,22 @@ +/* Optimized strchrnul implementation using loongarch LSX SIMD instructions. + Copyright (C) 2023 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 + <https://www.gnu.org/licenses/>. */ + +#define STRCHR __strchrnul_lsx +#define AS_STRCHRNUL +#include "strchr-lsx.S" diff --git a/sysdeps/loongarch/lp64/multiarch/strchrnul.c b/sysdeps/loongarch/lp64/multiarch/strchrnul.c new file mode 100644 index 00000000..f3b8296e --- /dev/null +++ b/sysdeps/loongarch/lp64/multiarch/strchrnul.c @@ -0,0 +1,39 @@ +/* Multiple versions of strchrnul. + All versions must be listed in ifunc-impl-list.c. + Copyright (C) 2023 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 multiple versions only for the definition in libc. */ + +#if IS_IN (libc) +# define strchrnul __redirect_strchrnul +# define __strchrnul __redirect___strchrnul +# include <string.h> +# undef __strchrnul +# undef strchrnul + +# define SYMBOL_NAME strchrnul +# include "ifunc-strchrnul.h" + +libc_ifunc_redirected (__redirect_strchrnul, __strchrnul, + IFUNC_SELECTOR ()); +weak_alias (__strchrnul, strchrnul) +# ifdef SHARED +__hidden_ver1 (__strchrnul, __GI___strchrnul, __redirect_strchrnul) + __attribute__((visibility ("hidden"))) __attribute_copy__ (strchrnul); +# endif +#endif -- 2.33.0
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