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author | Ulrich Drepper <drepper@redhat.com> | 2000-07-15 17:04:58 +0000 |
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committer | Ulrich Drepper <drepper@redhat.com> | 2000-07-15 17:04:58 +0000 |
commit | a9a4127ea6fdb692f3b0fdf2a88a4a8e254e453c (patch) | |
tree | 8ee04dcc3a20359e50763400d28082f6841934b0 /sysdeps/unix/sysv/linux/ia64/clone.S | |
parent | 4ab8e75a466234db954c36b296c25c1f0d610894 (diff) | |
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Update.
2000-07-13 Jes Sorensen <jes@linuxcare.com>
* sysdeps/unix/sysv/linux/ia64/clone.S: New file.
* sysdeps/unix/sysv/linux/ia64/fork.c: New file.
2000-06-05 David Mosberger <davidm@hpl.hp.com>
* sysdeps/unix/sysv/linux/ia64/bits/siginfo.h: New file
based on sysdeps/unix/sysv/linux/bits/siginfo.h.
Change type of si_band from "int" to "long".
(si_imm) [USE_GNU]: Define
(si_isr) [USE_GNU]: Ditto.
(ILL_BREAK) [USE_GNU]: Ditto.
(FPE_DECOVF) [USE_GNU]: Ditto.
(FPE_DECDIV) [USE_GNU]: Ditto.
(FPE_DECERR) [USE_GNU]: Ditto.
(FPE_INVASC) [USE_GNU]: Ditto.
(FPE_INVDEC) [USE_GNU]: Ditto.
(TRAP_BRANCH) [USE_GNU]: Ditto.
(TRAP_HWBKPT) [USE_GNU]: Ditto.
2000-07-06 Jes Sorensen <jes@linuxcare.com>
* sysdeps/unix/sysv/linux/ia64/sys/ucontext.h: Do not include
bits/sigcontext as struct mcontext does not depend on it.
* sysdeps/unix/sysv/linux/ia64/bits/sigcontext.h: New file.
2000-07-04 Jes Sorensen <jes@linuxcare.com>
* sysdeps/unix/sysv/linux/ia64/shmctl.c: Removed.
2000-07-04 David Mosberger-Tang <davidm@hpl.hp.com>
* sysdeps/unix/sysv/linux/ia64/bits/msq.h: New file.
2000-06-22 Jes Sorensen <jes@linuxcare.com>
* sysdeps/unix/sysv/linux/ia64/bits/mman.h: New file.
* intl/translit.po: New file.
Diffstat (limited to 'sysdeps/unix/sysv/linux/ia64/clone.S')
-rw-r--r-- | sysdeps/unix/sysv/linux/ia64/clone.S | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/ia64/clone.S b/sysdeps/unix/sysv/linux/ia64/clone.S new file mode 100644 index 0000000000..696e7f5bf1 --- /dev/null +++ b/sysdeps/unix/sysv/linux/ia64/clone.S @@ -0,0 +1,75 @@ +/* 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) |