| 1 | /* Test STT_GNU_IFUNC resolver with second argument. |
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| 2 | Copyright (C) 2019-2024 Free Software Foundation, Inc. |
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| 3 | This file is part of the GNU C Library. |
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| 4 | |
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| 5 | The GNU C Library is free software; you can redistribute it and/or |
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| 6 | modify it under the terms of the GNU Lesser General Public |
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| 7 | License as published by the Free Software Foundation; either |
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| 8 | version 2.1 of the License, or (at your option) any later version. |
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| 9 | |
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| 10 | The GNU C Library is distributed in the hope that it will be useful, |
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 13 | Lesser General Public License for more details. |
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| 14 | |
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| 15 | You should have received a copy of the GNU Lesser General Public |
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| 16 | License along with the GNU C Library; if not, see |
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| 17 | <https://www.gnu.org/licenses/>. */ |
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| 18 | |
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| 19 | #include <stdint.h> |
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| 20 | #include <sys/auxv.h> |
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| 21 | #include <sys/ifunc.h> |
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| 22 | #include <support/check.h> |
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| 23 | |
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| 24 | static int |
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| 25 | one (void) |
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| 26 | { |
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| 27 | return 1; |
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| 28 | } |
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| 29 | |
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| 30 | static uint64_t saved_arg1; |
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| 31 | static __ifunc_arg_t saved_arg2; |
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| 32 | |
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| 33 | /* extern visible ifunc symbol. */ |
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| 34 | int |
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| 35 | foo (void); |
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| 36 | |
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| 37 | void * |
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| 38 | foo_ifunc (uint64_t, const __ifunc_arg_t *) __asm__ ("foo" ); |
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| 39 | __asm__(".type foo, %gnu_indirect_function" ); |
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| 40 | |
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| 41 | void * |
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| 42 | inhibit_stack_protector |
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| 43 | foo_ifunc (uint64_t arg1, const __ifunc_arg_t *arg2) |
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| 44 | { |
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| 45 | saved_arg1 = arg1; |
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| 46 | if (arg1 & _IFUNC_ARG_HWCAP) |
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| 47 | saved_arg2 = *arg2; |
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| 48 | return (void *) one; |
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| 49 | } |
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| 50 | |
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| 51 | static int |
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| 52 | do_test (void) |
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| 53 | { |
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| 54 | TEST_VERIFY (foo () == 1); |
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| 55 | TEST_VERIFY (saved_arg1 & _IFUNC_ARG_HWCAP); |
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| 56 | TEST_COMPARE ((uint32_t)saved_arg1, (uint32_t)getauxval (AT_HWCAP)); |
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| 57 | TEST_COMPARE (saved_arg2._size, sizeof (__ifunc_arg_t)); |
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| 58 | TEST_COMPARE (saved_arg2._hwcap, getauxval (AT_HWCAP)); |
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| 59 | TEST_COMPARE (saved_arg2._hwcap2, getauxval (AT_HWCAP2)); |
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| 60 | return 0; |
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| 61 | } |
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| 62 | |
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| 63 | #include <support/test-driver.c> |
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| 64 | |
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