| 1 | /* Legacy shadow stack code. |
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| 2 | Copyright (C) 2023-2024 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 | .text |
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| 20 | .globl legacy |
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| 21 | .type legacy, @function |
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| 22 | legacy: |
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| 23 | .cfi_startproc |
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| 24 | #ifdef __x86_64__ |
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| 25 | movq (%rsp), %rax |
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| 26 | addq $8, %rsp |
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| 27 | jmp *%rax |
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| 28 | #else |
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| 29 | movl (%esp), %eax |
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| 30 | addl $4, %esp |
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| 31 | jmp *%eax |
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| 32 | #endif |
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| 33 | .cfi_endproc |
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| 34 | .size legacy, .-legacy |
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| 35 | .section .note.GNU-stack,"" ,@progbits |
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| 36 | |
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