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/* Test STT_GNU_IFUNC resolver with second argument.
Copyright (C) 2019-2023 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 <stdint.h>
#include <sys/auxv.h>
#include <sys/ifunc.h>
#include <support/check.h>
static int
one (void)
{
return 1;
}
static uint64_t saved_arg1;
static __ifunc_arg_t saved_arg2;
/* extern visible ifunc symbol. */
int
foo (void);
void *
foo_ifunc (uint64_t, const __ifunc_arg_t *) __asm__ ("foo");
__asm__(".type foo, %gnu_indirect_function");
void *
inhibit_stack_protector
foo_ifunc (uint64_t arg1, const __ifunc_arg_t *arg2)
{
saved_arg1 = arg1;
if (arg1 & _IFUNC_ARG_HWCAP)
saved_arg2 = *arg2;
return (void *) one;
}
static int
do_test (void)
{
TEST_VERIFY (foo () == 1);
TEST_VERIFY (saved_arg1 & _IFUNC_ARG_HWCAP);
TEST_COMPARE ((uint32_t)saved_arg1, (uint32_t)getauxval (AT_HWCAP));
TEST_COMPARE (saved_arg2._size, sizeof (__ifunc_arg_t));
TEST_COMPARE (saved_arg2._hwcap, getauxval (AT_HWCAP));
TEST_COMPARE (saved_arg2._hwcap2, getauxval (AT_HWCAP2));
return 0;
}
#include <support/test-driver.c>
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