-/* Copyright (C) 1999,2000 Free Software Foundation, Inc.
-
- 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., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
-
-/* 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>
-
-/* int clone(int (*fn)(void *arg), void *child_stack, int flags, void *arg); */
-
-/*
- * Used for both clone and fork system calls. Note that if fn is NULL
- * then clone was called from fork.
- */
-
-ENTRY(__clone)
- add r2 = -16, r33 // save space for fn and arg
- cmp.ne p6,p0 = 0,r33
- ;;
-(p6) add r33 = -16, r33
- add r12 = -16, r12
- ;;
-(p6) st8 [r2] = r32, 8 // save fn for child
- st8 [r12] = r32 // save fn for parent
- ;;
-(p6) st8 [r2] = r35 // save arg for child
- mov r32 = r34 // put flags in out0
- DO_CALL (SYS_ify (clone))
-1:
- ld8 r33 = [r12], 8 // recover fn
- ;;
- ld8 r32 = [r12], 8 // recover arg
-
- cmp.eq p6,p0=-1,r10
-(p6) br.cond.spnt.many __syscall_error // handle error
-
- cmp.ne p7,p0=0,r8
-(p7) ret // parent process, just return
-
- cmp.eq p8,p0=0,r33
-(p8) ret // fork call, return
-
- alloc loc0 = ar.pfs,2,2,2,0
- ;;
- ld8 r2 = [in1], 8 // get address of fn
- mov out0 = in0
- mov loc1 = gp // save gp across indirect call
- ;;
- ld8 gp = [in1] // set new gp
- mov b6 = r2
- br.call.sptk b0 = b6 // call thread routine
- ;;
-
- mov ar.pfs = loc0
- mov gp = loc1
- mov r32 = r8 // exit value
- ;;
- br.call.sptk b0 = _exit // we're out of here
-
-PSEUDO_END(__clone)
-
-weak_alias (__clone, clone)
+/* clone is not supported under Linux/ia64, use clone2. */