diff options
Diffstat (limited to 'sysdeps/x86_64/tst-shstk-legacy-1-extra.S')
| -rw-r--r-- | sysdeps/x86_64/tst-shstk-legacy-1-extra.S | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/sysdeps/x86_64/tst-shstk-legacy-1-extra.S b/sysdeps/x86_64/tst-shstk-legacy-1-extra.S new file mode 100644 index 0000000000..e2e27c5d65 --- /dev/null +++ b/sysdeps/x86_64/tst-shstk-legacy-1-extra.S @@ -0,0 +1,35 @@ +/* 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 |