/* Test STT_GNU_IFUNC resolver with second argument. Copyright (C) 2019-2020 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 . */ #include #include #include #include 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