diff options
Diffstat (limited to 'sysdeps/unix/bsd/sun')
| -rw-r--r-- | sysdeps/unix/bsd/sun/m68k/vfork.S | 55 | ||||
| -rw-r--r-- | sysdeps/unix/bsd/sun/sunos4/mmap.c | 7 | ||||
| -rw-r--r-- | sysdeps/unix/bsd/sun/sunos4/sys/mman.h | 5 |
3 files changed, 63 insertions, 4 deletions
diff --git a/sysdeps/unix/bsd/sun/m68k/vfork.S b/sysdeps/unix/bsd/sun/m68k/vfork.S new file mode 100644 index 0000000000..cb7dae8d2b --- /dev/null +++ b/sysdeps/unix/bsd/sun/m68k/vfork.S @@ -0,0 +1,55 @@ +/* Copyright (C) 1991, 1992, 1993, 1994, 1995 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 Library General Public License as +published by the Free Software Foundation; either version 2 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 +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with the GNU C Library; see the file COPYING.LIB. If +not, write to the Free Software Foundation, Inc., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#include <sysdep.h> + +#ifndef SYS_vfork +#define SYS_vfork 66 +#endif + +/* Clone the calling process, but without copying the whole address space. + The the calling process is suspended until the 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. */ +.globl ___vfork +___vfork: + /* Pop the return PC value into A0. */ + movel sp@+, a0 + + /* Push the syscall number and trap into the kernel. */ + movel #SYS_vfork, sp@- + trap #0 + bcs error /* Branch forward if it failed. */ + + /* It succeeded. See which fork we're in. D1 is now 0 for the + parent and 1 for the child. Decrement it to make it -1 (all + bits set) for the parent, and 0 (no bits set) for the child. + Then AND it with D0, so the parent gets D0&-1==R0, and the child + gets D0&0==0. */ + decl d1 + andl d1, d0 + + /* Jump to the return PC. */ + jmp a0@ + +error: + movel d0, _errno + moveq #-1, d0 + jmp a0@ + +weak_alias (__vfork, vfork) diff --git a/sysdeps/unix/bsd/sun/sunos4/mmap.c b/sysdeps/unix/bsd/sun/sunos4/mmap.c index 4dfc1ca2da..b71937381b 100644 --- a/sysdeps/unix/bsd/sun/sunos4/mmap.c +++ b/sysdeps/unix/bsd/sun/sunos4/mmap.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1994 Free Software Foundation, Inc. +/* Copyright (C) 1994, 1995 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 @@ -34,8 +34,9 @@ extern caddr_t __mmap_syscall (caddr_t addr, size_t len, caddr_t -mmap (caddr_t addr, size_t len, int prot, int flags, int fd, off_t offset) +__mmap (caddr_t addr, size_t len, int prot, int flags, int fd, off_t offset) { return __mmap_syscall (addr, len, prot, flags | _MAP_NEW, fd, offset); } - + +weak_alias (__mmap, mmap) diff --git a/sysdeps/unix/bsd/sun/sunos4/sys/mman.h b/sysdeps/unix/bsd/sun/sunos4/sys/mman.h index 727e665fb6..10f31a898e 100644 --- a/sysdeps/unix/bsd/sun/sunos4/sys/mman.h +++ b/sysdeps/unix/bsd/sun/sunos4/sys/mman.h @@ -1,5 +1,5 @@ /* Definitions for BSD-style memory management. SunOS 4 version. -Copyright (C) 1994 Free Software Foundation, Inc. +Copyright (C) 1994, 1995 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 @@ -80,11 +80,14 @@ __BEGIN_DECLS for errors (in which case `errno' is set). A successful `mmap' call deallocates any previous mapping for the affected region. */ +__caddr_t __mmap __P ((__caddr_t __addr, size_t __len, + int __prot, int __flags, int __fd, __off_t __offset)); __caddr_t mmap __P ((__caddr_t __addr, size_t __len, int __prot, int __flags, int __fd, __off_t __offset)); /* Deallocate any mapping for the region starting at ADDR and extending LEN bytes. Returns 0 if successful, -1 for errors (and sets errno). */ +int __munmap __P ((__caddr_t __addr, size_t __len)); int munmap __P ((__caddr_t __addr, size_t __len)); /* Change the memory protection of the region starting at ADDR and |