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Diffstat (limited to 'sysdeps/s390/jmpbuf-unwind.h')
| -rw-r--r-- | sysdeps/s390/jmpbuf-unwind.h | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/sysdeps/s390/jmpbuf-unwind.h b/sysdeps/s390/jmpbuf-unwind.h new file mode 100644 index 0000000000..c1a670fc7d --- /dev/null +++ b/sysdeps/s390/jmpbuf-unwind.h @@ -0,0 +1,55 @@ +/* Copyright (C) 2003, 2004, 2005, 2006 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Jakub Jelinek <jakub@redhat.com>, 2003. + + 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 <setjmp.h> +#include <jmpbuf-offsets.h> +#include <stdint.h> +#include <unwind.h> +#include <bits/wordsize.h> +#include <sysdep.h> + + +/* Test if longjmp to JMPBUF would unwind the frame + containing a local variable at ADDRESS. */ +#define _JMPBUF_UNWINDS(jmpbuf, address, demangle) \ + ((void *) (address) < (void *) demangle ((jmpbuf)->__gregs[__JB_GPR15])) + + +/* On s390{,x}, CFA is always 96 (resp. 160) bytes above actual + %r15. */ +#define _JMPBUF_CFA_UNWINDS_ADJ(_jmpbuf, _context, _adj) \ + _JMPBUF_UNWINDS_ADJ (_jmpbuf, \ + (void *) (_Unwind_GetCFA (_context) \ + - 32 - 2 * __WORDSIZE), _adj) + +static inline uintptr_t __attribute__ ((unused)) +_jmpbuf_sp (__jmp_buf regs) +{ + uintptr_t sp = regs[0].__gregs[__JB_GPR15]; +#ifdef PTR_DEMANGLE + PTR_DEMANGLE (sp); +#endif + return sp; +} + +#define _JMPBUF_UNWINDS_ADJ(_jmpbuf, _address, _adj) \ + ((uintptr_t) (_address) - (_adj) < _jmpbuf_sp (_jmpbuf) - (_adj)) + +/* We use the normal longjmp for unwinding. */ +#define __libc_unwind_longjmp(buf, val) __libc_longjmp (buf, val) |