| 1 | /* Shared object part of test for setjmp interoperability with static |
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| 2 | dlopen BZ #21895. |
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| 3 | Copyright (C) 2017-2024 Free Software Foundation, Inc. |
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| 4 | This file is part of the GNU C Library. |
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| 5 | |
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| 6 | The GNU C Library is free software; you can redistribute it and/or |
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| 7 | modify it under the terms of the GNU Lesser General Public |
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| 8 | License as published by the Free Software Foundation; either |
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| 9 | version 2.1 of the License, or (at your option) any later version. |
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| 10 | |
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| 11 | The GNU C Library is distributed in the hope that it will be useful, |
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| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 14 | Lesser General Public License for more details. |
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| 15 | |
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| 16 | You should have received a copy of the GNU Lesser General Public |
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| 17 | License along with the GNU C Library; if not, see |
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| 18 | <https://www.gnu.org/licenses/>. */ |
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| 19 | |
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| 20 | #include <string.h> |
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| 21 | #include <setjmp.h> |
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| 22 | |
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| 23 | /* Copy r1 address to a local variable. */ |
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| 24 | #define GET_STACK_POINTER(sp) \ |
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| 25 | ({ \ |
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| 26 | asm volatile ("mr %0, 1\n\t" \ |
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| 27 | : "=r" (sp)); \ |
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| 28 | }) |
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| 29 | |
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| 30 | jmp_buf jb; |
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| 31 | void (*bar)(jmp_buf, unsigned long); |
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| 32 | |
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| 33 | void |
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| 34 | lbar (unsigned long sp) |
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| 35 | { |
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| 36 | bar(jb, sp); |
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| 37 | for(;;); |
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| 38 | } |
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| 39 | |
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| 40 | void |
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| 41 | foo (void) |
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| 42 | { |
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| 43 | unsigned long sp; |
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| 44 | /* Copy r1 (stack pointer) to sp. It will be use later to get |
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| 45 | TOC area. */ |
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| 46 | GET_STACK_POINTER(sp); |
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| 47 | setjmp(jb); |
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| 48 | lbar(sp); |
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| 49 | |
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| 50 | for(;;); |
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| 51 | } |
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| 52 | |
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