diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/alpha/swapcontext.S')
| -rw-r--r-- | sysdeps/unix/sysv/linux/alpha/swapcontext.S | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/alpha/swapcontext.S b/sysdeps/unix/sysv/linux/alpha/swapcontext.S new file mode 100644 index 0000000000..fd202a4201 --- /dev/null +++ b/sysdeps/unix/sysv/linux/alpha/swapcontext.S @@ -0,0 +1,50 @@ +/* Save current context and install the given one. + Copyright (C) 2004-2014 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, see + <http://www.gnu.org/licenses/>. */ + +#include <sysdep.h> +#include <ucontext-offsets.h> + +ENTRY(__swapcontext) + +#ifdef PROF + ldgp $29, 0($27) + .set noat + lda AT, _mcount + jsr AT, (AT), _mcount + .set at + .prologue 1 +#elif defined PIC + .prologue 0 +#else + ldgp $29, 0($27) + .prologue 1 +#endif + +#ifdef PIC + unop + bsr $0, __getcontext_x !samegp + mov $17, $16 + br $31, __setcontext !samegp +#else + jsr $0, __getcontext_x + mov $17, $16 + jmp $31, __setcontext +#endif + +END(__swapcontext) +weak_alias (__swapcontext, swapcontext) |