diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/nios2/clone.S')
| -rw-r--r-- | sysdeps/unix/sysv/linux/nios2/clone.S | 95 |
1 files changed, 0 insertions, 95 deletions
diff --git a/sysdeps/unix/sysv/linux/nios2/clone.S b/sysdeps/unix/sysv/linux/nios2/clone.S deleted file mode 100644 index 7929dfa48a..0000000000 --- a/sysdeps/unix/sysv/linux/nios2/clone.S +++ /dev/null @@ -1,95 +0,0 @@ -/* clone() implementation for Nios II. - Copyright (C) 2008-2017 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Andrew Jenner <andrew@codesourcery.com>, 2008. - - 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> -#include <tcb-offsets.h> - -#define CLONE_VM 0x00000100 - -/* int clone(int (*fn)(void *arg), void *child_stack, int flags, void *arg, - void *parent_tidptr, void *tls, void *child_tidptr) */ - - .text -ENTRY(__clone) - /* Sanity check arguments. */ - movi r2, EINVAL - /* No NULL function pointers. */ - beq r4, zero, SYSCALL_ERROR_LABEL - /* No NULL stack pointers. */ - beq r5, zero, SYSCALL_ERROR_LABEL - - subi r5, r5, 8 /* Reserve argument save space. */ - stw r4, 4(r5) /* Save function pointer. */ - stw r7, 0(r5) /* Save argument pointer. */ - - /* Load arguments. */ - mov r4, r6 - ldw r6, 0(sp) - ldw r7, 8(sp) - ldw r8, 4(sp) - - /* Do the system call. */ - movi r2, SYS_ify (clone) - - /* End FDE now, because in the child the unwind info will be - wrong. */ - cfi_endproc - trap - - /* Check for errors. */ - bne r7, zero, SYSCALL_ERROR_LABEL - /* See if we're on the newly created thread. */ - beq r2, zero, thread_start - /* Successful return from the parent */ - ret - -thread_start: - cfi_startproc - cfi_undefined (ra) - - ldw r5, 4(sp) /* Function pointer. */ - ldw r4, 0(sp) /* Argument pointer. */ - addi sp, sp, 8 - - /* Call the user's function. */ - callr r5 - - /* _exit with the result. */ - mov r4, r2 -#ifdef PIC - nextpc r22 -1: movhi r8, %hiadj(_gp_got - 1b) - addi r8, r8, %lo(_gp_got - 1b) - add r22, r22, r8 - ldw r8, %call(HIDDEN_JUMPTARGET(_exit))(r22) - jmp r8 -#else - jmpi _exit -#endif - cfi_endproc - - cfi_startproc -PSEUDO_END (__clone) -libc_hidden_def (__clone) -weak_alias (__clone, clone) |