1 /* Test string/memory functions with size_t in the lower 32 bits of 2 64-bit register. 3 Copyright (C) 2019-2021 Free Software Foundation, Inc. 4 This file is part of the GNU C Library. 5 6 The GNU C Library is free software; you can redistribute it and/or 7 modify it under the terms of the GNU Lesser General Public 8 License as published by the Free Software Foundation; either 9 version 2.1 of the License, or (at your option) any later version. 10 11 The GNU C Library is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 Lesser General Public License for more details. 15 16 You should have received a copy of the GNU Lesser General Public 17 License along with the GNU C Library; if not, see 18 <https://www.gnu.org/licenses/>. */ 19 20 #define TEST_MAIN 21 #include <string/test-string.h> 22 23 /* On x32, parameter_t may be passed in a 64-bit register with the LEN 24 field in the lower 32 bits. When the LEN field of 64-bit register 25 is passed to string/memory function as the size_t parameter, only 26 the lower 32 bits can be used. */ 27 typedef struct 28 { 29 union 30 { 31 size_t len; 32 void (*fn) (void); 33 }; 34 void *p; 35 } parameter_t; 36