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Diffstat (limited to 'sysdeps/alpha/bsd-setjmp.S')
| -rw-r--r-- | sysdeps/alpha/bsd-setjmp.S | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/sysdeps/alpha/bsd-setjmp.S b/sysdeps/alpha/bsd-setjmp.S new file mode 100644 index 0000000000..470f7bc47d --- /dev/null +++ b/sysdeps/alpha/bsd-setjmp.S @@ -0,0 +1,30 @@ +/* BSD `setjmp' entry point to `sigsetjmp (..., 1)'. Alpha version. +Copyright (C) 1994 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. */ + +/* This just does a tail-call to `__sigsetjmp (ARG, 1)'. + We cannot do it in C because it must be a tail-call, so frame-unwinding + in setjmp doesn't clobber the state restored by longjmp. */ + +#include <sysdep.h> + +ENTRY (setjmp) + lda $27, __sigsetjmp /* Load address to jump to. */ + bis $31, 1, $17 /* Pass a second argument of one. */ + jmp $31, ($27), __sigsetjmp /* Call __sigsetjmp. */ + .end setjmp |