diff options
Diffstat (limited to 'LoongArch-Add-ifunc-support-for-strrchr-aligned-lsx-.patch')
| -rw-r--r-- | LoongArch-Add-ifunc-support-for-strrchr-aligned-lsx-.patch | 670 |
1 files changed, 670 insertions, 0 deletions
diff --git a/LoongArch-Add-ifunc-support-for-strrchr-aligned-lsx-.patch b/LoongArch-Add-ifunc-support-for-strrchr-aligned-lsx-.patch new file mode 100644 index 0000000..63301f8 --- /dev/null +++ b/LoongArch-Add-ifunc-support-for-strrchr-aligned-lsx-.patch @@ -0,0 +1,670 @@ +From d537d0ab45a55048c8da483e73be4448ddb45525 Mon Sep 17 00:00:00 2001 +From: dengjianbo <dengjianbo@loongson.cn> +Date: Wed, 13 Sep 2023 15:35:00 +0800 +Subject: [PATCH 23/29] LoongArch: Add ifunc support for strrchr{aligned, lsx, + lasx} + +According to glibc strrchr microbenchmark test results, this implementation +could reduce the runtime time as following: + +Name Percent of rutime reduced +strrchr-lasx 10%-50% +strrchr-lsx 0%-50% +strrchr-aligned 5%-50% + +Generic strrchr is implemented by function strlen + memrchr, the lasx version +will compare with generic strrchr implemented by strlen-lasx + memrchr-lasx, +the lsx version will compare with generic strrchr implemented by strlen-lsx + +memrchr-lsx, the aligned version will compare with generic strrchr implemented +by strlen-aligned + memrchr-generic. + +Signed-off-by: Peng Fan <fanpeng@loongson.cn> +Signed-off-by: ticat_fp <fanpeng@loongson.cn> +--- + sysdeps/loongarch/lp64/multiarch/Makefile | 3 + + .../lp64/multiarch/ifunc-impl-list.c | 8 + + .../loongarch/lp64/multiarch/ifunc-strrchr.h | 41 ++++ + .../lp64/multiarch/strrchr-aligned.S | 170 +++++++++++++++++ + .../loongarch/lp64/multiarch/strrchr-lasx.S | 176 ++++++++++++++++++ + .../loongarch/lp64/multiarch/strrchr-lsx.S | 144 ++++++++++++++ + sysdeps/loongarch/lp64/multiarch/strrchr.c | 36 ++++ + 7 files changed, 578 insertions(+) + create mode 100644 sysdeps/loongarch/lp64/multiarch/ifunc-strrchr.h + create mode 100644 sysdeps/loongarch/lp64/multiarch/strrchr-aligned.S + create mode 100644 sysdeps/loongarch/lp64/multiarch/strrchr-lasx.S + create mode 100644 sysdeps/loongarch/lp64/multiarch/strrchr-lsx.S + create mode 100644 sysdeps/loongarch/lp64/multiarch/strrchr.c + +diff --git a/sysdeps/loongarch/lp64/multiarch/Makefile b/sysdeps/loongarch/lp64/multiarch/Makefile +index 39550bea..fe863e1b 100644 +--- a/sysdeps/loongarch/lp64/multiarch/Makefile ++++ b/sysdeps/loongarch/lp64/multiarch/Makefile +@@ -9,6 +9,9 @@ sysdep_routines += \ + strchr-aligned \ + strchr-lsx \ + strchr-lasx \ ++ strrchr-aligned \ ++ strrchr-lsx \ ++ strrchr-lasx \ + strchrnul-aligned \ + strchrnul-lsx \ + strchrnul-lasx \ +diff --git a/sysdeps/loongarch/lp64/multiarch/ifunc-impl-list.c b/sysdeps/loongarch/lp64/multiarch/ifunc-impl-list.c +index 39a14f1d..529e2369 100644 +--- a/sysdeps/loongarch/lp64/multiarch/ifunc-impl-list.c ++++ b/sysdeps/loongarch/lp64/multiarch/ifunc-impl-list.c +@@ -94,6 +94,14 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array, + IFUNC_IMPL_ADD (array, i, stpcpy, 1, __stpcpy_aligned) + ) + ++ IFUNC_IMPL (i, name, strrchr, ++#if !defined __loongarch_soft_float ++ IFUNC_IMPL_ADD (array, i, strrchr, SUPPORT_LASX, __strrchr_lasx) ++ IFUNC_IMPL_ADD (array, i, strrchr, SUPPORT_LSX, __strrchr_lsx) ++#endif ++ IFUNC_IMPL_ADD (array, i, strrchr, 1, __strrchr_aligned) ++ ) ++ + IFUNC_IMPL (i, name, memcpy, + #if !defined __loongarch_soft_float + IFUNC_IMPL_ADD (array, i, memcpy, SUPPORT_LASX, __memcpy_lasx) +diff --git a/sysdeps/loongarch/lp64/multiarch/ifunc-strrchr.h b/sysdeps/loongarch/lp64/multiarch/ifunc-strrchr.h +new file mode 100644 +index 00000000..bbb34089 +--- /dev/null ++++ b/sysdeps/loongarch/lp64/multiarch/ifunc-strrchr.h +@@ -0,0 +1,41 @@ ++/* Common definition for strrchr 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/strrchr-aligned.S b/sysdeps/loongarch/lp64/multiarch/strrchr-aligned.S +new file mode 100644 +index 00000000..a73deb78 +--- /dev/null ++++ b/sysdeps/loongarch/lp64/multiarch/strrchr-aligned.S +@@ -0,0 +1,170 @@ ++/* Optimized strrchr 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 STRRCHR __strrchr_aligned ++#else ++# define STRRCHR strrchr ++#endif ++ ++LEAF(STRRCHR, 6) ++ slli.d t0, a0, 3 ++ bstrins.d a0, zero, 2, 0 ++ lu12i.w a2, 0x01010 ++ ld.d t2, a0, 0 ++ ++ andi a1, a1, 0xff ++ ori a2, a2, 0x101 ++ li.d t3, -1 ++ bstrins.d a2, a2, 63, 32 ++ ++ sll.d t5, t3, t0 ++ slli.d a3, a2, 7 ++ orn t4, t2, t5 ++ mul.d a1, a1, a2 ++ ++ sub.d t0, t4, a2 ++ andn t1, a3, t4 ++ and t1, t0, t1 ++ beqz t1, L(find_tail) ++ ++ ++ ctz.d t0, t1 ++ orn t0, zero, t0 ++ xor t2, t4, a1 ++ srl.d t0, t3, t0 ++ ++ orn t2, t2, t0 ++ orn t2, t2, t5 ++ revb.d t2, t2 ++ sub.d t1, t2, a2 ++ ++ andn t0, a3, t2 ++ and t1, t0, t1 ++ ctz.d t0, t1 ++ srli.d t0, t0, 3 ++ ++ addi.d a0, a0, 7 ++ sub.d a0, a0, t0 ++ maskeqz a0, a0, t1 ++ jr ra ++ ++ ++L(find_tail): ++ addi.d a4, a0, 8 ++ addi.d a0, a0, 8 ++L(loop_ascii): ++ ld.d t2, a0, 0 ++ sub.d t1, t2, a2 ++ ++ and t0, t1, a3 ++ bnez t0, L(more_check) ++ ld.d t2, a0, 8 ++ sub.d t1, t2, a2 ++ ++ and t0, t1, a3 ++ addi.d a0, a0, 16 ++ beqz t0, L(loop_ascii) ++ addi.d a0, a0, -8 ++ ++L(more_check): ++ andn t0, a3, t2 ++ and t1, t1, t0 ++ bnez t1, L(tail) ++ addi.d a0, a0, 8 ++ ++ ++L(loop_nonascii): ++ ld.d t2, a0, 0 ++ sub.d t1, t2, a2 ++ andn t0, a3, t2 ++ and t1, t0, t1 ++ ++ bnez t1, L(tail) ++ ld.d t2, a0, 8 ++ addi.d a0, a0, 16 ++ sub.d t1, t2, a2 ++ ++ andn t0, a3, t2 ++ and t1, t0, t1 ++ beqz t1, L(loop_nonascii) ++ addi.d a0, a0, -8 ++ ++L(tail): ++ ctz.d t0, t1 ++ orn t0, zero, t0 ++ xor t2, t2, a1 ++ srl.d t0, t3, t0 ++ ++ ++ orn t2, t2, t0 ++ revb.d t2, t2 ++ sub.d t1, t2, a2 ++ andn t0, a3, t2 ++ ++ and t1, t0, t1 ++ bnez t1, L(count_pos) ++L(find_loop): ++ beq a0, a4, L(find_end) ++ ld.d t2, a0, -8 ++ ++ addi.d a0, a0, -8 ++ xor t2, t2, a1 ++ sub.d t1, t2, a2 ++ andn t0, a3, t2 ++ ++ and t1, t0, t1 ++ beqz t1, L(find_loop) ++ revb.d t2, t2 ++ sub.d t1, t2, a2 ++ ++ ++ andn t0, a3, t2 ++ and t1, t0, t1 ++L(count_pos): ++ ctz.d t0, t1 ++ addi.d a0, a0, 7 ++ ++ srli.d t0, t0, 3 ++ sub.d a0, a0, t0 ++ jr ra ++ nop ++ ++L(find_end): ++ xor t2, t4, a1 ++ orn t2, t2, t5 ++ revb.d t2, t2 ++ sub.d t1, t2, a2 ++ ++ ++ andn t0, a3, t2 ++ and t1, t0, t1 ++ ctz.d t0, t1 ++ srli.d t0, t0, 3 ++ ++ addi.d a0, a4, -1 ++ sub.d a0, a0, t0 ++ maskeqz a0, a0, t1 ++ jr ra ++END(STRRCHR) ++ ++libc_hidden_builtin_def(STRRCHR) +diff --git a/sysdeps/loongarch/lp64/multiarch/strrchr-lasx.S b/sysdeps/loongarch/lp64/multiarch/strrchr-lasx.S +new file mode 100644 +index 00000000..5a6e2297 +--- /dev/null ++++ b/sysdeps/loongarch/lp64/multiarch/strrchr-lasx.S +@@ -0,0 +1,176 @@ ++/* Optimized strrchr implementation using LoongArch LASX 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 ++ ++#define STRRCHR __strrchr_lasx ++ ++LEAF(STRRCHR, 6) ++ move a2, a0 ++ bstrins.d a0, zero, 5, 0 ++ xvld xr0, a0, 0 ++ xvld xr1, a0, 32 ++ ++ li.d t2, -1 ++ xvreplgr2vr.b xr4, a1 ++ xvmsknz.b xr2, xr0 ++ xvmsknz.b xr3, xr1 ++ ++ xvpickve.w xr5, xr2, 4 ++ xvpickve.w xr6, xr3, 4 ++ vilvl.h vr2, vr5, vr2 ++ vilvl.h vr3, vr6, vr3 ++ ++ vilvl.w vr2, vr3, vr2 ++ movfr2gr.d t0, fa2 ++ sra.d t0, t0, a2 ++ beq t0, t2, L(find_tail) ++ ++ ++ xvseq.b xr2, xr0, xr4 ++ xvseq.b xr3, xr1, xr4 ++ xvmsknz.b xr2, xr2 ++ xvmsknz.b xr3, xr3 ++ ++ xvpickve.w xr4, xr2, 4 ++ xvpickve.w xr5, xr3, 4 ++ vilvl.h vr2, vr4, vr2 ++ vilvl.h vr3, vr5, vr3 ++ ++ vilvl.w vr1, vr3, vr2 ++ slli.d t3, t2, 1 ++ movfr2gr.d t1, fa1 ++ cto.d t0, t0 ++ ++ srl.d t1, t1, a2 ++ sll.d t3, t3, t0 ++ addi.d a0, a2, 63 ++ andn t1, t1, t3 ++ ++ ++ clz.d t0, t1 ++ sub.d a0, a0, t0 ++ maskeqz a0, a0, t1 ++ jr ra ++ ++ .align 5 ++L(find_tail): ++ addi.d a3, a0, 64 ++L(loop): ++ xvld xr2, a0, 64 ++ xvld xr3, a0, 96 ++ addi.d a0, a0, 64 ++ ++ xvmin.bu xr5, xr2, xr3 ++ xvsetanyeqz.b fcc0, xr5 ++ bceqz fcc0, L(loop) ++ xvmsknz.b xr5, xr2 ++ ++ ++ xvmsknz.b xr6, xr3 ++ xvpickve.w xr7, xr5, 4 ++ xvpickve.w xr8, xr6, 4 ++ vilvl.h vr5, vr7, vr5 ++ ++ vilvl.h vr6, vr8, vr6 ++ xvseq.b xr2, xr2, xr4 ++ xvseq.b xr3, xr3, xr4 ++ xvmsknz.b xr2, xr2 ++ ++ xvmsknz.b xr3, xr3 ++ xvpickve.w xr7, xr2, 4 ++ xvpickve.w xr8, xr3, 4 ++ vilvl.h vr2, vr7, vr2 ++ ++ vilvl.h vr3, vr8, vr3 ++ vilvl.w vr5, vr6, vr5 ++ vilvl.w vr2, vr3, vr2 ++ movfr2gr.d t0, fa5 ++ ++ ++ movfr2gr.d t1, fa2 ++ slli.d t3, t2, 1 ++ cto.d t0, t0 ++ sll.d t3, t3, t0 ++ ++ andn t1, t1, t3 ++ beqz t1, L(find_loop) ++ clz.d t0, t1 ++ addi.d a0, a0, 63 ++ ++ sub.d a0, a0, t0 ++ jr ra ++L(find_loop): ++ beq a0, a3, L(find_end) ++ xvld xr2, a0, -64 ++ ++ xvld xr3, a0, -32 ++ addi.d a0, a0, -64 ++ xvseq.b xr2, xr2, xr4 ++ xvseq.b xr3, xr3, xr4 ++ ++ ++ xvmax.bu xr5, xr2, xr3 ++ xvseteqz.v fcc0, xr5 ++ bcnez fcc0, L(find_loop) ++ xvmsknz.b xr0, xr2 ++ ++ xvmsknz.b xr1, xr3 ++ xvpickve.w xr2, xr0, 4 ++ xvpickve.w xr3, xr1, 4 ++ vilvl.h vr0, vr2, vr0 ++ ++ vilvl.h vr1, vr3, vr1 ++ vilvl.w vr0, vr1, vr0 ++ movfr2gr.d t0, fa0 ++ addi.d a0, a0, 63 ++ ++ clz.d t0, t0 ++ sub.d a0, a0, t0 ++ jr ra ++ nop ++ ++ ++L(find_end): ++ xvseq.b xr2, xr0, xr4 ++ xvseq.b xr3, xr1, xr4 ++ xvmsknz.b xr2, xr2 ++ xvmsknz.b xr3, xr3 ++ ++ xvpickve.w xr4, xr2, 4 ++ xvpickve.w xr5, xr3, 4 ++ vilvl.h vr2, vr4, vr2 ++ vilvl.h vr3, vr5, vr3 ++ ++ vilvl.w vr1, vr3, vr2 ++ movfr2gr.d t1, fa1 ++ addi.d a0, a2, 63 ++ srl.d t1, t1, a2 ++ ++ clz.d t0, t1 ++ sub.d a0, a0, t0 ++ maskeqz a0, a0, t1 ++ jr ra ++END(STRRCHR) ++ ++libc_hidden_builtin_def(STRRCHR) ++#endif +diff --git a/sysdeps/loongarch/lp64/multiarch/strrchr-lsx.S b/sysdeps/loongarch/lp64/multiarch/strrchr-lsx.S +new file mode 100644 +index 00000000..8f2fd22e +--- /dev/null ++++ b/sysdeps/loongarch/lp64/multiarch/strrchr-lsx.S +@@ -0,0 +1,144 @@ ++/* Optimized strrchr implementation using LoongArch LSX 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 ++ ++#define STRRCHR __strrchr_lsx ++ ++LEAF(STRRCHR, 6) ++ move a2, a0 ++ bstrins.d a0, zero, 4, 0 ++ vld vr0, a0, 0 ++ vld vr1, a0, 16 ++ ++ li.d t2, -1 ++ vreplgr2vr.b vr4, a1 ++ vmsknz.b vr2, vr0 ++ vmsknz.b vr3, vr1 ++ ++ vilvl.h vr2, vr3, vr2 ++ movfr2gr.s t0, fa2 ++ sra.w t0, t0, a2 ++ beq t0, t2, L(find_tail) ++ ++ vseq.b vr2, vr0, vr4 ++ vseq.b vr3, vr1, vr4 ++ vmsknz.b vr2, vr2 ++ vmsknz.b vr3, vr3 ++ ++ ++ vilvl.h vr1, vr3, vr2 ++ slli.d t3, t2, 1 ++ movfr2gr.s t1, fa1 ++ cto.w t0, t0 ++ ++ srl.w t1, t1, a2 ++ sll.d t3, t3, t0 ++ addi.d a0, a2, 31 ++ andn t1, t1, t3 ++ ++ clz.w t0, t1 ++ sub.d a0, a0, t0 ++ maskeqz a0, a0, t1 ++ jr ra ++ ++ .align 5 ++L(find_tail): ++ addi.d a3, a0, 32 ++L(loop): ++ vld vr2, a0, 32 ++ vld vr3, a0, 48 ++ addi.d a0, a0, 32 ++ ++ vmin.bu vr5, vr2, vr3 ++ vsetanyeqz.b fcc0, vr5 ++ bceqz fcc0, L(loop) ++ vmsknz.b vr5, vr2 ++ ++ vmsknz.b vr6, vr3 ++ vilvl.h vr5, vr6, vr5 ++ vseq.b vr2, vr2, vr4 ++ vseq.b vr3, vr3, vr4 ++ ++ vmsknz.b vr2, vr2 ++ vmsknz.b vr3, vr3 ++ vilvl.h vr2, vr3, vr2 ++ movfr2gr.s t0, fa5 ++ ++ ++ movfr2gr.s t1, fa2 ++ slli.d t3, t2, 1 ++ cto.w t0, t0 ++ sll.d t3, t3, t0 ++ ++ andn t1, t1, t3 ++ beqz t1, L(find_loop) ++ clz.w t0, t1 ++ addi.d a0, a0, 31 ++ ++ sub.d a0, a0, t0 ++ jr ra ++L(find_loop): ++ beq a0, a3, L(find_end) ++ vld vr2, a0, -32 ++ ++ vld vr3, a0, -16 ++ addi.d a0, a0, -32 ++ vseq.b vr2, vr2, vr4 ++ vseq.b vr3, vr3, vr4 ++ ++ ++ vmax.bu vr5, vr2, vr3 ++ vseteqz.v fcc0, vr5 ++ bcnez fcc0, L(find_loop) ++ vmsknz.b vr0, vr2 ++ ++ vmsknz.b vr1, vr3 ++ vilvl.h vr0, vr1, vr0 ++ movfr2gr.s t0, fa0 ++ addi.d a0, a0, 31 ++ ++ clz.w t0, t0 ++ sub.d a0, a0, t0 ++ jr ra ++ nop ++ ++L(find_end): ++ vseq.b vr2, vr0, vr4 ++ vseq.b vr3, vr1, vr4 ++ vmsknz.b vr2, vr2 ++ vmsknz.b vr3, vr3 ++ ++ ++ vilvl.h vr1, vr3, vr2 ++ movfr2gr.s t1, fa1 ++ addi.d a0, a2, 31 ++ srl.w t1, t1, a2 ++ ++ clz.w t0, t1 ++ sub.d a0, a0, t0 ++ maskeqz a0, a0, t1 ++ jr ra ++END(STRRCHR) ++ ++libc_hidden_builtin_def(STRRCHR) ++#endif +diff --git a/sysdeps/loongarch/lp64/multiarch/strrchr.c b/sysdeps/loongarch/lp64/multiarch/strrchr.c +new file mode 100644 +index 00000000..d9c9f660 +--- /dev/null ++++ b/sysdeps/loongarch/lp64/multiarch/strrchr.c +@@ -0,0 +1,36 @@ ++/* Multiple versions of strrchr. ++ 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 strrchr __redirect_strrchr ++# include <string.h> ++# undef strrchr ++ ++# define SYMBOL_NAME strrchr ++# include "ifunc-strrchr.h" ++ ++libc_ifunc_redirected (__redirect_strrchr, strrchr, IFUNC_SELECTOR ()); ++weak_alias (strrchr, rindex) ++# ifdef SHARED ++__hidden_ver1 (strrchr, __GI_strrchr, __redirect_strrchr) ++ __attribute__ ((visibility ("hidden"))) __attribute_copy__ (strrchr); ++# endif ++ ++#endif +-- +2.33.0 + |