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diff --git a/sysdeps/x86_64/tst-shstk-legacy-1-extra.S b/sysdeps/x86_64/tst-shstk-legacy-1-extra.S
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+/* Legacy shadow stack code.
+ Copyright (C) 2023-2024 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+ .text
+ .globl legacy
+ .type legacy, @function
+legacy:
+ .cfi_startproc
+#ifdef __x86_64__
+ movq (%rsp), %rax
+ addq $8, %rsp
+ jmp *%rax
+#else
+ movl (%esp), %eax
+ addl $4, %esp
+ jmp *%eax
+#endif
+ .cfi_endproc
+ .size legacy, .-legacy
+ .section .note.GNU-stack,"",@progbits