summaryrefslogtreecommitdiff
path: root/libc/sysdeps/linux/nds32/vfork.S
diff options
context:
space:
mode:
Diffstat (limited to 'libc/sysdeps/linux/nds32/vfork.S')
-rw-r--r--libc/sysdeps/linux/nds32/vfork.S129
1 files changed, 0 insertions, 129 deletions
diff --git a/libc/sysdeps/linux/nds32/vfork.S b/libc/sysdeps/linux/nds32/vfork.S
deleted file mode 100644
index ab32135fc..000000000
--- a/libc/sysdeps/linux/nds32/vfork.S
+++ /dev/null
@@ -1,129 +0,0 @@
-/*
- * Copyright (C) 2016-2017 Andes Technology, Inc.
- * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
- */
-
-/* Copyright (C) 1999, 2002, 2003 Free Software Foundation, Inc.
- Contributed by Philip Blundell <philb@gnu.org>.
-
- 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, write to the Free
- Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- 02111-1307 USA. */
-
-#include <sysdep.h>
-#define _ERRNO_H 1
-#include <bits/errno.h>
-
-/* Clone the calling process, but without copying the whole address space.
- The calling process is suspended until the new process exits or is
- replaced by a call to `execve'. Return -1 for errors, 0 to the new process,
- and the process ID of the new process to the old process. */
-
-ENTRY (__vfork)
-#ifdef PIC
-.pic
-#endif
-
-#ifdef __NR_vfork
- syscall __NR_vfork
- bltz $r0, 2f
-1:
- ret
-2:
- sltsi $r1, $r0, -4096
- bnez $r1, 1b;
-
-# ifdef __ASSUME_VFORK_SYSCALL
-# ifdef PIC
- pushm $gp, $lp
- cfi_adjust_cfa_offset(8)
- cfi_rel_offset(gp, 0)
- cfi_rel_offset(lp, 4)
- mfusr $r15, $PC
- sethi $gp, hi20(_GLOBAL_OFFSET_TABLE_+4)
- ori $gp, $gp, lo12(_GLOBAL_OFFSET_TABLE_+8)
- add $gp, $gp, $r15
-
- ! r15=C_SYMBOL_NAME(__syscall_error)@PLT
- sethi $r15, hi20(C_SYMBOL_NAME(__syscall_error)@PLT)
- ori $r15, $r15, lo12(C_SYMBOL_NAME(__syscall_error)@PLT)
- add $r15, $r15, $gp
-
- ! jump to SYSCALL_ERROR
- jral $r15
- popm $gp, $lp
- cfi_adjust_cfa_offset(-8)
- cfi_restore(lp)
- cfi_restore(gp)
- ret
-# else
- j C_SYMBOL_NAME(__syscall_error)
-# endif
-# else
- /* Check if vfork syscall is known at all. */
- li $r1, -ENOSYS
- beq $r0, $r1, 1f
-
-# ifdef PIC
-3:
- pushm $gp, $lp
- cfi_adjust_cfa_offset(8)
- cfi_rel_offset(gp, 0)
- cfi_rel_offset(lp, 4)
- mfusr $r15, $PC
- sethi $gp, hi20(_GLOBAL_OFFSET_TABLE_+4)
- ori $gp, $gp, lo12(_GLOBAL_OFFSET_TABLE_+8)
- add $gp, $gp, $r15
-
- ! r15=C_SYMBOL_NAME(__syscall_error)@PLT
- sethi $r15, hi20(C_SYMBOL_NAME(__syscall_error)@PLT)
- ori $r15, $r15, lo12(C_SYMBOL_NAME(__syscall_error)@PLT)
- add $r15, $r15, $gp
-
- ! jump to SYSCALL_ERROR
- jral $r15
- popm $gp, $lp
- cfi_adjust_cfa_offset(-8)
- cfi_restore(lp)
- cfi_restore(gp)
- ret
-# else
- j C_SYMBOL_NAME(__syscall_error)
-# endif
-1:
-# endif
-#endif
-
-#ifndef __ASSUME_VFORK_SYSCALL
- /* If we don't have vfork, fork is close enough. */
- syscall __NR_fork
- bgez $r0, 1f
- sltsi $r1, $r0, -4096
- bnez $r1, 1f
-
-# ifdef PIC
- b 3b
-# else
- j C_SYMBOL_NAME(__syscall_error)
-# endif
-1:
- ret
-
-#elif !defined __NR_vfork
-# error "__NR_vfork not available and __ASSUME_VFORK_SYSCALL defined"
-#endif
-
-PSEUDO_END (__vfork)
-weak_alias (__vfork, vfork)
-libc_hidden_def (vfork)