diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/aarch64/morello/prctl.S')
| -rw-r--r-- | sysdeps/unix/sysv/linux/aarch64/morello/prctl.S | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/aarch64/morello/prctl.S b/sysdeps/unix/sysv/linux/aarch64/morello/prctl.S new file mode 100644 index 0000000000..f4e253af41 --- /dev/null +++ b/sysdeps/unix/sysv/linux/aarch64/morello/prctl.S @@ -0,0 +1,44 @@ +/* Copyright (C) 2022 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/>. */ + +#include <sysdep.h> + +/* prctl (int option, ...) with 4 optional variadic arguments. */ + +ENTRY (__prctl) + mov x8, #__NR_prctl + cbz x9, L(skip_args) + gclen x10, c9 + ldr c1, [c9] + cmp x10, 16 + bls L(skip_args) + ldr c2, [c9,16] + cmp x10, 32 + bls L(skip_args) + ldr c3, [c9,32] + cmp x10, 48 + bls L(skip_args) + ldr c4, [c9,48] +L(skip_args): + svc 0x0 + cmn x0, #4095 + b.cs .Lsyscall_error + ret +PSEUDO_END (__prctl) +libc_hidden_def (__prctl) +weak_alias (__prctl, prctl) |