| 1 | /* Restartable Sequences Linux x86 architecture header. |
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| 2 | Copyright (C) 2021-2022 Free Software Foundation, Inc. |
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| 3 | |
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| 4 | The GNU C Library is free software; you can redistribute it and/or |
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| 5 | modify it under the terms of the GNU Lesser General Public |
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| 6 | License as published by the Free Software Foundation; either |
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| 7 | version 2.1 of the License, or (at your option) any later version. |
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| 8 | |
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| 9 | The GNU C Library is distributed in the hope that it will be useful, |
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| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 12 | Lesser General Public License for more details. |
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| 13 | |
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| 14 | You should have received a copy of the GNU Lesser General Public |
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| 15 | License along with the GNU C Library; if not, see |
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| 16 | <https://www.gnu.org/licenses/>. */ |
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| 17 | |
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| 18 | #ifndef _SYS_RSEQ_H |
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| 19 | # error "Never use <bits/rseq.h> directly; include <sys/rseq.h> instead." |
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| 20 | #endif |
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| 21 | |
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| 22 | /* RSEQ_SIG is a signature required before each abort handler code. |
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| 23 | |
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| 24 | RSEQ_SIG is used with the following reserved undefined instructions, which |
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| 25 | trap in user-space: |
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| 26 | |
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| 27 | x86-32: 0f b9 3d 53 30 05 53 ud1 0x53053053,%edi |
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| 28 | x86-64: 0f b9 3d 53 30 05 53 ud1 0x53053053(%rip),%edi */ |
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| 29 | |
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| 30 | #define RSEQ_SIG 0x53053053 |
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| 31 | |
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