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glibc-2.41
string/string-inlines.c
560 строк
14 KB
Paul Eggert
Update copyright dates with scripts/update-copyrights
01 янв 2025, 22:22
01 янв 2025, 22:22
2642002
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/* Copyright (C) 1999-2025 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/>. */ /* This file contains compatibility definitions of functions that were formerly defined as "extern inline" in string.h; it's conceivable that old binaries contain references to them. */ #define __NO_STRING_INLINES #include <string.h> #include "shlib-compat.h" #if SHLIB_COMPAT (libc, GLIBC_2_1_1, GLIBC_2_25) /* These functions were removed from string.h in glibc 2.25. */ char * __old_strtok_r_1c (char *__s, char __sep, char **__nextp) { char *__result; if (__s == NULL) __s = *__nextp; while (*__s == __sep) ++__s; __result = NULL; if (*__s != '\0') { __result = __s++; while (*__s != '\0') if (*__s++ == __sep) { __s[-1] = '\0'; break; } } *__nextp = __s; return __result; } compat_symbol (libc, __old_strtok_r_1c, __strtok_r_1c, GLIBC_2_1_1); char * __old_strsep_1c (char **__s, char __reject) { char *__retval = *__s; if (__retval != NULL && (*__s = strchr (__retval, __reject)) != NULL) *(*__s)++ = '\0'; return __retval; } compat_symbol (libc, __old_strsep_1c, __strsep_1c, GLIBC_2_1_1); char * __old_strsep_2c (char **__s, char __reject1, char __reject2) { char *__retval = *__s; if (__retval != NULL) { char *__cp = __retval; while (1) { if (*__cp == '\0') { __cp = NULL; break; } if (*__cp == __reject1 || *__cp == __reject2) { *__cp++ = '\0'; break; } ++__cp; } *__s = __cp; } return __retval; } compat_symbol (libc, __old_strsep_2c, __strsep_2c, GLIBC_2_1_1); char * __old_strsep_3c (char **__s, char __reject1, char __reject2, char __reject3) { char *__retval = *__s; if (__retval != NULL) { char *__cp = __retval; while (1) { if (*__cp == '\0') { __cp = NULL; break; } if (*__cp == __reject1 || *__cp == __reject2 || *__cp == __reject3) { *__cp++ = '\0'; break; } ++__cp; } *__s = __cp; } return __retval; } compat_symbol (libc, __old_strsep_3c, __strsep_3c, GLIBC_2_1_1); #endif #if SHLIB_COMPAT (libc, GLIBC_2_1_1, GLIBC_2_24) /* These functions were removed from string.h in glibc 2.24. */ size_t __old_strcspn_c1 (const char *__s, int __reject) { size_t __result = 0; while (__s[__result] != '\0' && __s[__result] != __reject) ++__result; return __result; } compat_symbol (libc, __old_strcspn_c1, __strcspn_c1, GLIBC_2_1_1); size_t __old_strcspn_c2 (const char *__s, int __reject1, int __reject2) { size_t __result = 0; while (__s[__result] != '\0' && __s[__result] != __reject1 && __s[__result] != __reject2) ++__result; return __result; } compat_symbol (libc, __old_strcspn_c2, __strcspn_c2, GLIBC_2_1_1); size_t __old_strcspn_c3 (const char *__s, int __reject1, int __reject2, int __reject3) { size_t __result = 0; while (__s[__result] != '\0' && __s[__result] != __reject1 && __s[__result] != __reject2 && __s[__result] != __reject3) ++__result; return __result; } compat_symbol (libc, __old_strcspn_c3, __strcspn_c3, GLIBC_2_1_1); size_t __old_strspn_c1 (const char *__s, int __accept) { size_t __result = 0; /* Please note that __accept never can be '\0'. */ while (__s[__result] == __accept) ++__result; return __result; } compat_symbol (libc, __old_strspn_c1, __strspn_c1, GLIBC_2_1_1); size_t __old_strspn_c2 (const char *__s, int __accept1, int __accept2) { size_t __result = 0; /* Please note that __accept1 and __accept2 never can be '\0'. */ while (__s[__result] == __accept1 || __s[__result] == __accept2) ++__result; return __result; } compat_symbol (libc, __old_strspn_c2, __strspn_c2, GLIBC_2_1_1); size_t __old_strspn_c3 (const char *__s, int __accept1, int __accept2, int __accept3) { size_t __result = 0; /* Please note that __accept1 to __accept3 never can be '\0'. */ while (__s[__result] == __accept1 || __s[__result] == __accept2 || __s[__result] == __accept3) ++__result; return __result; } compat_symbol (libc, __old_strspn_c3, __strspn_c3, GLIBC_2_1_1); char * __old_strpbrk_c2 (const char *__s, int __accept1, int __accept2) { /* Please note that __accept1 and __accept2 never can be '\0'. */ while (*__s != '\0' && *__s != __accept1 && *__s != __accept2) ++__s; return *__s == '\0' ? NULL : (char *) (size_t) __s; } compat_symbol (libc, __old_strpbrk_c2, __strpbrk_c2, GLIBC_2_1_1); char * __old_strpbrk_c3 (const char *__s, int __accept1, int __accept2, int __accept3) { /* Please note that __accept1 to __accept3 never can be '\0'. */ while (*__s != '\0' && *__s != __accept1 && *__s != __accept2 && *__s != __accept3) ++__s; return *__s == '\0' ? NULL : (char *) (size_t) __s; } compat_symbol (libc, __old_strpbrk_c3, __strpbrk_c3, GLIBC_2_1_1); # if defined __mc68020__ || defined __s390__ || defined __i386__ # define _STRING_INLINE_unaligned 1 # else # define _STRING_INLINE_unaligned 0 /* These are a few types we need for the optimizations if we cannot use unaligned memory accesses. */ # define __STRING2_COPY_TYPE(N) \ typedef struct { unsigned char __arr[N]; } \ __attribute__ ((__packed__)) __STRING2_COPY_ARR##N __STRING2_COPY_TYPE (2); __STRING2_COPY_TYPE (3); __STRING2_COPY_TYPE (4); __STRING2_COPY_TYPE (5); __STRING2_COPY_TYPE (6); __STRING2_COPY_TYPE (7); __STRING2_COPY_TYPE (8); # undef __STRING2_COPY_TYPE # endif # if _STRING_INLINE_unaligned void * __old_mempcpy_small (void *__dest1, char __src0_1, char __src2_1, char __src4_1, char __src6_1, __uint16_t __src0_2, __uint16_t __src4_2, __uint32_t __src0_4, __uint32_t __src4_4, size_t __srclen) { union { __uint32_t __ui; __uint16_t __usi; unsigned char __uc; unsigned char __c; } *__u = __dest1; switch ((unsigned int) __srclen) { case 1: __u->__c = __src0_1; __u = __extension__ ((void *) __u + 1); break; case 2: __u->__usi = __src0_2; __u = __extension__ ((void *) __u + 2); break; case 3: __u->__usi = __src0_2; __u = __extension__ ((void *) __u + 2); __u->__c = __src2_1; __u = __extension__ ((void *) __u + 1); break; case 4: __u->__ui = __src0_4; __u = __extension__ ((void *) __u + 4); break; case 5: __u->__ui = __src0_4; __u = __extension__ ((void *) __u + 4); __u->__c = __src4_1; __u = __extension__ ((void *) __u + 1); break; case 6: __u->__ui = __src0_4; __u = __extension__ ((void *) __u + 4); __u->__usi = __src4_2; __u = __extension__ ((void *) __u + 2); break; case 7: __u->__ui = __src0_4; __u = __extension__ ((void *) __u + 4); __u->__usi = __src4_2; __u = __extension__ ((void *) __u + 2); __u->__c = __src6_1; __u = __extension__ ((void *) __u + 1); break; case 8: __u->__ui = __src0_4; __u = __extension__ ((void *) __u + 4); __u->__ui = __src4_4; __u = __extension__ ((void *) __u + 4); break; } return (void *) __u; } # else void * __old_mempcpy_small (void *__dest, char __src1, __STRING2_COPY_ARR2 __src2, __STRING2_COPY_ARR3 __src3, __STRING2_COPY_ARR4 __src4, __STRING2_COPY_ARR5 __src5, __STRING2_COPY_ARR6 __src6, __STRING2_COPY_ARR7 __src7, __STRING2_COPY_ARR8 __src8, size_t __srclen) { union { char __c; __STRING2_COPY_ARR2 __sca2; __STRING2_COPY_ARR3 __sca3; __STRING2_COPY_ARR4 __sca4; __STRING2_COPY_ARR5 __sca5; __STRING2_COPY_ARR6 __sca6; __STRING2_COPY_ARR7 __sca7; __STRING2_COPY_ARR8 __sca8; } *__u = __dest; switch ((unsigned int) __srclen) { case 1: __u->__c = __src1; break; case 2: __extension__ __u->__sca2 = __src2; break; case 3: __extension__ __u->__sca3 = __src3; break; case 4: __extension__ __u->__sca4 = __src4; break; case 5: __extension__ __u->__sca5 = __src5; break; case 6: __extension__ __u->__sca6 = __src6; break; case 7: __extension__ __u->__sca7 = __src7; break; case 8: __extension__ __u->__sca8 = __src8; break; } return __extension__ ((void *) __u + __srclen); } # endif compat_symbol (libc, __old_mempcpy_small, __mempcpy_small, GLIBC_2_1_1); # if _STRING_INLINE_unaligned char * __old_strcpy_small (char *__dest, __uint16_t __src0_2, __uint16_t __src4_2, __uint32_t __src0_4, __uint32_t __src4_4, size_t __srclen) { union { __uint32_t __ui; __uint16_t __usi; unsigned char __uc; } *__u = (void *) __dest; switch ((unsigned int) __srclen) { case 1: __u->__uc = '\0'; break; case 2: __u->__usi = __src0_2; break; case 3: __u->__usi = __src0_2; __u = __extension__ ((void *) __u + 2); __u->__uc = '\0'; break; case 4: __u->__ui = __src0_4; break; case 5: __u->__ui = __src0_4; __u = __extension__ ((void *) __u + 4); __u->__uc = '\0'; break; case 6: __u->__ui = __src0_4; __u = __extension__ ((void *) __u + 4); __u->__usi = __src4_2; break; case 7: __u->__ui = __src0_4; __u = __extension__ ((void *) __u + 4); __u->__usi = __src4_2; __u = __extension__ ((void *) __u + 2); __u->__uc = '\0'; break; case 8: __u->__ui = __src0_4; __u = __extension__ ((void *) __u + 4); __u->__ui = __src4_4; break; } return __dest; } # else char * __old_strcpy_small (char *__dest, __STRING2_COPY_ARR2 __src2, __STRING2_COPY_ARR3 __src3, __STRING2_COPY_ARR4 __src4, __STRING2_COPY_ARR5 __src5, __STRING2_COPY_ARR6 __src6, __STRING2_COPY_ARR7 __src7, __STRING2_COPY_ARR8 __src8, size_t __srclen) { union { char __c; __STRING2_COPY_ARR2 __sca2; __STRING2_COPY_ARR3 __sca3; __STRING2_COPY_ARR4 __sca4; __STRING2_COPY_ARR5 __sca5; __STRING2_COPY_ARR6 __sca6; __STRING2_COPY_ARR7 __sca7; __STRING2_COPY_ARR8 __sca8; } *__u = (void *) __dest; switch ((unsigned int) __srclen) { case 1: __u->__c = '\0'; break; case 2: __extension__ __u->__sca2 = __src2; break; case 3: __extension__ __u->__sca3 = __src3; break; case 4: __extension__ __u->__sca4 = __src4; break; case 5: __extension__ __u->__sca5 = __src5; break; case 6: __extension__ __u->__sca6 = __src6; break; case 7: __extension__ __u->__sca7 = __src7; break; case 8: __extension__ __u->__sca8 = __src8; break; } return __dest; } # endif compat_symbol (libc, __old_strcpy_small, __strcpy_small, GLIBC_2_1_1); # if _STRING_INLINE_unaligned char * __old_stpcpy_small (char *__dest, __uint16_t __src0_2, __uint16_t __src4_2, __uint32_t __src0_4, __uint32_t __src4_4, size_t __srclen) { union { unsigned int __ui; unsigned short int __usi; unsigned char __uc; char __c; } *__u = (void *) __dest; switch ((unsigned int) __srclen) { case 1: __u->__uc = '\0'; break; case 2: __u->__usi = __src0_2; __u = __extension__ ((void *) __u + 1); break; case 3: __u->__usi = __src0_2; __u = __extension__ ((void *) __u + 2); __u->__uc = '\0'; break; case 4: __u->__ui = __src0_4; __u = __extension__ ((void *) __u + 3); break; case 5: __u->__ui = __src0_4; __u = __extension__ ((void *) __u + 4); __u->__uc = '\0'; break; case 6: __u->__ui = __src0_4; __u = __extension__ ((void *) __u + 4); __u->__usi = __src4_2; __u = __extension__ ((void *) __u + 1); break; case 7: __u->__ui = __src0_4; __u = __extension__ ((void *) __u + 4); __u->__usi = __src4_2; __u = __extension__ ((void *) __u + 2); __u->__uc = '\0'; break; case 8: __u->__ui = __src0_4; __u = __extension__ ((void *) __u + 4); __u->__ui = __src4_4; __u = __extension__ ((void *) __u + 3); break; } return &__u->__c; } # else char * __old_stpcpy_small (char *__dest, __STRING2_COPY_ARR2 __src2, __STRING2_COPY_ARR3 __src3, __STRING2_COPY_ARR4 __src4, __STRING2_COPY_ARR5 __src5, __STRING2_COPY_ARR6 __src6, __STRING2_COPY_ARR7 __src7, __STRING2_COPY_ARR8 __src8, size_t __srclen) { union { char __c; __STRING2_COPY_ARR2 __sca2; __STRING2_COPY_ARR3 __sca3; __STRING2_COPY_ARR4 __sca4; __STRING2_COPY_ARR5 __sca5; __STRING2_COPY_ARR6 __sca6; __STRING2_COPY_ARR7 __sca7; __STRING2_COPY_ARR8 __sca8; } *__u = (void *) __dest; switch ((unsigned int) __srclen) { case 1: __u->__c = '\0'; break; case 2: __extension__ __u->__sca2 = __src2; break; case 3: __extension__ __u->__sca3 = __src3; break; case 4: __extension__ __u->__sca4 = __src4; break; case 5: __extension__ __u->__sca5 = __src5; break; case 6: __extension__ __u->__sca6 = __src6; break; case 7: __extension__ __u->__sca7 = __src7; break; case 8: __extension__ __u->__sca8 = __src8; break; } return __dest + __srclen - 1; } # endif compat_symbol (libc, __old_stpcpy_small, __stpcpy_small, GLIBC_2_1_1); #endif