diff options
Diffstat (limited to 'libc/sysdeps/linux/microblaze/vfork.S')
| -rw-r--r-- | libc/sysdeps/linux/microblaze/vfork.S | 51 |
1 files changed, 27 insertions, 24 deletions
diff --git a/libc/sysdeps/linux/microblaze/vfork.S b/libc/sysdeps/linux/microblaze/vfork.S index 1e802ae29..cd6012889 100644 --- a/libc/sysdeps/linux/microblaze/vfork.S +++ b/libc/sysdeps/linux/microblaze/vfork.S @@ -1,44 +1,47 @@ /* * libc/sysdeps/linux/microblaze/vfork.S -- `vfork' syscall for linux/microblaze * + * Copyright (C) 2003 John Williams <jwilliams@itee.uq.edu.au> * Copyright (C) 2001 NEC Corporation * Copyright (C) 2001 Miles Bader <miles@gnu.org> - * Copyright (C) 2003 John Williams <jwilliams@itee.uq.edu.au> - * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org> * - * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. - */ -/* + * This file is subject to the terms and conditions of the GNU Lesser + * General Public License. See the file COPYING.LIB in the main + * directory of this archive for more details. + * * Written by Miles Bader <miles@gnu.org> * Microblaze port by John Williams */ -#define _ERRNO_H 1 -#include <bits/errno.h> -#define _SYSCALL_H -#include <bits/sysnum.h> - -#include <clinkage.h> +#include <sys/syscall.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. */ -.global C_SYMBOL_NAME(errno) - -C_ENTRY (__vfork): + .globl __vfork + .hidden __vfork + .align 4 +__vfork: addi r12, r0, SYS_vfork - bralid r17, 0x08; - nop - addi r4, r3, 125 // minimum err value - blti r4, 1f // is r3 < -125? - rtsd r15, 8 // normal return - nop -1: sub r3, r3, r0 // r3 = -r3 + brki r14, 0x08; + addi r4, r3, 125 /* minimum err value */ + blti r4, 1f /* is r3 < -125? */ + bri 2f /* normal return */ +1: sub r3, r3, r0 /* r3 = -r3 */ +#ifdef __PIC__ + mfs r3,rpc + addik r3,r3,_GLOBAL_OFFSET_TABLE_+8 + lwi r3,r3,C_SYMBOL_NAME(errno)@GOT + sw r3, r0, r3 +#else swi r3, r0, C_SYMBOL_NAME(errno); - rtsd r15, 8 // error return +#endif + /* state restore etc */ +2: rtsd r15, 8 /* error return */ nop -C_END(__vfork) + .size __vfork, .-__vfork + weak_alias(__vfork,vfork) -libc_hidden_weak(vfork) +libc_hidden_def(vfork) |