glibc/sysdeps/unix/sysv/linux/sparc/sparc64/longjmp.S

/* Copyright (C) 1997 Free Software Foundation, Inc.
   Contributed by Richard Henderson (rth@tamu.edu).

   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.  */

/* longjmp is implemented in terms of the setcontext trap on Linux/Sparc64.  */

#include <sysdep.h>

/* Offsets into the jmp_buf structure.  */

#define O_mask_was_saved	512
#define O_gregs			32
#define O_g1			(O_gregs + 4*8)


/* void longjmp (sigjmp_buf env, int val) */

ENTRY(longjmp)

	/* Modify the context with the value we want to return.  */
	movre	%o1, 1, %o1
	stx	%o1, [%o0 + O_g1]

	/* Let setcontext know if we want to modify the current sigmask. */
	ld	[%o0 + O_mask_was_saved], %o1

	/* And bamf back to where we belong!  */
	ta	0x6f

END(longjmp)

strong_alias(longjmp, __longjmp)
strong_alias(longjmp, __libc_longjmp)
strong_alias(longjmp, __libc_siglongjmp)
weak_alias(longjmp, _longjmp)
weak_alias(longjmp, siglongjmp)