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| 1 | /* Machine-specific function to return the stack pointer. i386 version. |
|---|---|
| 2 | Copyright (C) 1994-2022 Free Software Foundation, Inc. |
| 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 |
| 17 | <https://www.gnu.org/licenses/>. */ |
| 18 | |
| 19 | #ifndef _MACHINE_SP_H |
| 20 | #define _MACHINE_SP_H |
| 21 | |
| 22 | /* Return the current stack pointer. */ |
| 23 | |
| 24 | #define __thread_stack_pointer() ({ \ |
| 25 | uintptr_t __sp__; \ |
| 26 | __asm__ ("movl %%esp, %0" : "=r" (__sp__)); \ |
| 27 | __sp__; \ |
| 28 | }) |
| 29 | |
| 30 | #endif /* machine-sp.h */ |
| 31 |
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