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| author | "Steven J. Hill" <sjhill@realitydiluted.com> | 2006-02-23 02:35:04 +0000 |
|---|---|---|
| committer | "Steven J. Hill" <sjhill@realitydiluted.com> | 2006-02-23 02:35:04 +0000 |
| commit | 0f2c86bee22bc756814129b430b0687c7e23df81 (patch) | |
| tree | 34bf3df7ba73405de13432cd82002540c073fc05 /libpthread/linuxthreads/sysdeps/unix/sysv/linux/alpha/vfork.S | |
| parent | d8284756b901217626556772ea91a3839a3ebfb4 (diff) | |
| download | uClibc-alpine-0f2c86bee22bc756814129b430b0687c7e23df81.tar.bz2 uClibc-alpine-0f2c86bee22bc756814129b430b0687c7e23df81.tar.xz | |
Copy from trunk.
Diffstat (limited to 'libpthread/linuxthreads/sysdeps/unix/sysv/linux/alpha/vfork.S')
| -rw-r--r-- | libpthread/linuxthreads/sysdeps/unix/sysv/linux/alpha/vfork.S | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/libpthread/linuxthreads/sysdeps/unix/sysv/linux/alpha/vfork.S b/libpthread/linuxthreads/sysdeps/unix/sysv/linux/alpha/vfork.S new file mode 100644 index 000000000..cfaae1060 --- /dev/null +++ b/libpthread/linuxthreads/sysdeps/unix/sysv/linux/alpha/vfork.S @@ -0,0 +1,70 @@ +/* Copyright (C) 2003 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 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-cancel.h> + + .align 4 + .globl __vfork + .type __vfork, @function + .usepv __vfork, std + cfi_startproc +__vfork: + ldgp gp, 0(pv) + PSEUDO_PROF + +#ifdef SHARED + ldq t0, __libc_pthread_functions(gp) !gprel + bne t0, HIDDEN_JUMPTARGET (__fork) !samegp +#else + .weak pthread_create + ldq t0, pthread_create(gp) !literal + bne t0, $do_fork +#endif + + lda v0, SYS_ify(vfork) + call_pal PAL_callsys + bne a3, SYSCALL_ERROR_LABEL + ret + +#ifndef SHARED + /* Can't tail-call due to possible mismatch between GP in + fork and vfork object files. */ +$do_fork: + subq sp, 16, sp + cfi_adjust_cfa_offset(16) + stq ra, 0(sp) + cfi_offset(ra, -16) + jsr ra, HIDDEN_JUMPTARGET (__fork) + ldgp gp, 0(ra) + ldq ra, 0(sp) + addq sp, 16, sp + cfi_restore(ra) + cfi_adjust_cfa_offset(-16) + ret + +$syscall_error: + SYSCALL_ERROR_HANDLER +#endif + + cfi_endproc + .size __vfork, .-__vfork + +libc_hidden_def (__vfork) + +weak_alias (__vfork, vfork) |