glibc/sysdeps/x86_64/x32/test-size_t.h

36 lines
1.3 KiB
C

/* Test string/memory functions with size_t in the lower 32 bits of
64-bit register.
Copyright (C) 2019-2024 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 TEST_MAIN
#include <string/test-string.h>
/* On x32, parameter_t may be passed in a 64-bit register with the LEN
field in the lower 32 bits. When the LEN field of 64-bit register
is passed to string/memory function as the size_t parameter, only
the lower 32 bits can be used. */
typedef struct
{
union
{
size_t len;
void (*fn) (void);
};
void *p;
} parameter_t;