diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/aarch64/clone.S')
| -rw-r--r-- | sysdeps/unix/sysv/linux/aarch64/clone.S | 92 |
1 files changed, 0 insertions, 92 deletions
diff --git a/sysdeps/unix/sysv/linux/aarch64/clone.S b/sysdeps/unix/sysv/linux/aarch64/clone.S deleted file mode 100644 index 259ec073c5..0000000000 --- a/sysdeps/unix/sysv/linux/aarch64/clone.S +++ /dev/null @@ -1,92 +0,0 @@ -/* Copyright (C) 1996-2017 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 - <http://www.gnu.org/licenses/>. */ - -/* clone() is even more special than fork() as it mucks with stacks - and invokes a function in the right context after its all over. */ - -#include <sysdep.h> -#define _ERRNO_H 1 -#include <bits/errno.h> - -#define CLONE_VM_BIT 8 -#define CLONE_VM (1 << CLONE_VM_BIT) - -#define CLONE_THREAD_BIT 16 -#define CLONE_THREAD (1 << CLONE_THREAD_BIT) - -/* int clone(int (*fn)(void *arg), x0 - void *child_stack, x1 - int flags, x2 - void *arg, x3 - pid_t *ptid, x4 - struct user_desc *tls, x5 - pid_t *ctid); x6 - */ - .text -ENTRY(__clone) - DELOUSE (0) - DELOUSE (1) - DELOUSE (2) - DELOUSE (3) - DELOUSE (4) - DELOUSE (5) - DELOUSE (6) - /* Save args for the child. */ - mov x10, x0 - mov x11, x2 - mov x12, x3 - - /* Sanity check args. */ - mov x0, #-EINVAL - cbz x10, .Lsyscall_error - cbz x1, .Lsyscall_error - - /* Do the system call. */ - /* X0:flags, x1:newsp, x2:parenttidptr, x3:newtls, x4:childtid. */ - mov x0, x2 /* flags */ - /* New sp is already in x1. */ - mov x2, x4 /* ptid */ - mov x3, x5 /* tls */ - mov x4, x6 /* ctid */ - mov x8, #SYS_ify(clone) - svc 0x0 - - cmp x0, #0 - beq thread_start - blt .Lsyscall_error - RET -PSEUDO_END (__clone) - - .align 4 - .type thread_start, %function -thread_start: - cfi_startproc - cfi_undefined (x30) - mov x29, 0 - - /* Pick the function arg and execute. */ - mov x0, x12 - blr x10 - - /* We are done, pass the return value through x0. */ - b HIDDEN_JUMPTARGET(_exit) - cfi_endproc - .size thread_start, .-thread_start - -libc_hidden_def (__clone) -weak_alias (__clone, clone) |