| 1 | /* Multiple versions of memmove. |
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| 2 | Copyright (C) 2016-2022 Free Software Foundation, Inc. |
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| 3 | This file is part of the GNU C Library. |
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| 4 | |
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| 5 | The GNU C Library is free software; you can redistribute it and/or |
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| 6 | modify it under the terms of the GNU Lesser General Public |
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| 7 | License as published by the Free Software Foundation; either |
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| 8 | version 2.1 of the License, or (at your option) any later version. |
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| 9 | |
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| 10 | The GNU C Library is distributed in the hope that it will be useful, |
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 13 | Lesser General Public License for more details. |
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| 14 | |
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| 15 | You should have received a copy of the GNU Lesser General Public |
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| 16 | License along with the GNU C Library; if not, see |
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| 17 | <https://www.gnu.org/licenses/>. */ |
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| 18 | |
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| 19 | #include <ifunc-memcpy.h> |
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| 20 | |
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| 21 | #if HAVE_MEMMOVE_IFUNC |
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| 22 | /* If we don't use ifunc, an alias is defined for memmove |
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| 23 | in sysdeps/s390/memmove-c.c or sysdeps/s390/memcpy.S |
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| 24 | depending on the used default implementation. */ |
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| 25 | # undef memmove |
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| 26 | # define memmove __redirect_memmove |
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| 27 | # include <string.h> |
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| 28 | # include <ifunc-resolve.h> |
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| 29 | # undef memmove |
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| 30 | |
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| 31 | # if HAVE_MEMMOVE_C |
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| 32 | extern __typeof (__redirect_memmove) MEMMOVE_C attribute_hidden; |
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| 33 | # endif |
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| 34 | |
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| 35 | # if HAVE_MEMMOVE_Z13 |
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| 36 | extern __typeof (__redirect_memmove) MEMMOVE_Z13 attribute_hidden; |
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| 37 | # endif |
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| 38 | |
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| 39 | # if HAVE_MEMMOVE_ARCH13 |
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| 40 | extern __typeof (__redirect_memmove) MEMMOVE_ARCH13 attribute_hidden; |
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| 41 | # endif |
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| 42 | |
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| 43 | s390_libc_ifunc_expr (__redirect_memmove, memmove, |
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| 44 | ({ |
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| 45 | s390_libc_ifunc_expr_stfle_init (); |
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| 46 | (HAVE_MEMMOVE_ARCH13 && (hwcap & HWCAP_S390_VXRS_EXT2) |
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| 47 | && S390_IS_ARCH13_MIE3 (stfle_bits)) |
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| 48 | ? MEMMOVE_ARCH13 |
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| 49 | : (HAVE_MEMMOVE_Z13 && (hwcap & HWCAP_S390_VX)) |
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| 50 | ? MEMMOVE_Z13 |
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| 51 | : MEMMOVE_DEFAULT; |
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| 52 | }) |
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| 53 | ) |
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| 54 | #endif |
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| 55 | |
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