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2b8a3c86 | 1 | /* Test STT_GNU_IFUNC resolver with second argument. |
dff8da6b | 2 | Copyright (C) 2019-2024 Free Software Foundation, Inc. |
2b8a3c86 SN |
3 | This file is part of the GNU C Library. |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
6 | modify it under the terms of the GNU Lesser General Public | |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
9 | ||
10 | The GNU C Library is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | Lesser General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Lesser General Public | |
16 | License along with the GNU C Library; if not, see | |
5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
2b8a3c86 SN |
18 | |
19 | #include <stdint.h> | |
20 | #include <sys/auxv.h> | |
21 | #include <sys/ifunc.h> | |
22 | #include <support/check.h> | |
23 | ||
24 | static int | |
25 | one (void) | |
26 | { | |
27 | return 1; | |
28 | } | |
29 | ||
30 | static uint64_t saved_arg1; | |
31 | static __ifunc_arg_t saved_arg2; | |
32 | ||
33 | /* extern visible ifunc symbol. */ | |
34 | int | |
35 | foo (void); | |
36 | ||
37 | void * | |
38 | foo_ifunc (uint64_t, const __ifunc_arg_t *) __asm__ ("foo"); | |
39 | __asm__(".type foo, %gnu_indirect_function"); | |
40 | ||
41 | void * | |
42 | inhibit_stack_protector | |
43 | foo_ifunc (uint64_t arg1, const __ifunc_arg_t *arg2) | |
44 | { | |
45 | saved_arg1 = arg1; | |
46 | if (arg1 & _IFUNC_ARG_HWCAP) | |
47 | saved_arg2 = *arg2; | |
48 | return (void *) one; | |
49 | } | |
50 | ||
51 | static int | |
52 | do_test (void) | |
53 | { | |
54 | TEST_VERIFY (foo () == 1); | |
55 | TEST_VERIFY (saved_arg1 & _IFUNC_ARG_HWCAP); | |
56 | TEST_COMPARE ((uint32_t)saved_arg1, (uint32_t)getauxval (AT_HWCAP)); | |
57 | TEST_COMPARE (saved_arg2._size, sizeof (__ifunc_arg_t)); | |
58 | TEST_COMPARE (saved_arg2._hwcap, getauxval (AT_HWCAP)); | |
59 | TEST_COMPARE (saved_arg2._hwcap2, getauxval (AT_HWCAP2)); | |
60 | return 0; | |
61 | } | |
62 | ||
63 | #include <support/test-driver.c> |