[thirdparty/glibc.git] / sysdeps / unix / sysv / linux / ia64 / unwind_longjmp.c

/* Copyright (C) 1991-2015 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 <stddef.h>
#include <setjmp.h>
#include <signal.h>
#include <pthreadP.h>
#include <jmpbuf-unwind.h>

extern void __sigstack_longjmp (__jmp_buf, int)
     __attribute__ ((noreturn));

/* Like __libc_siglongjmp(), but safe for crossing from alternate
   signal stack to normal stack.  Needed by NPTL.  */
void
__libc_unwind_longjmp (sigjmp_buf env, int val)
{
  /* Perform any cleanups needed by the frames being unwound.  */
  __pthread_cleanup_upto (env->__jmpbuf, CURRENT_STACK_FRAME);

  if (env[0].__mask_was_saved)
    /* Restore the saved signal mask.  */
    (void) __sigprocmask (SIG_SETMASK, &env[0].__saved_mask,
			  (sigset_t *) NULL);

  /* Call the machine-dependent function to restore machine state.  */
  __sigstack_longjmp (env[0].__jmpbuf, val ?: 1);
}
hidden_def (__libc_unwind_longjmp)
Commit	Line	Data
b168057a	1	/* Copyright (C) 1991-2015 Free Software Foundation, Inc.
d5efd131 MF	2	This file is part of the GNU C Library.
	3
	4	The GNU C Library is free software; you can redistribute it and/or
	5	modify it under the terms of the GNU Lesser General Public
	6	License as published by the Free Software Foundation; either
	7	version 2.1 of the License, or (at your option) any later version.
	8
	9	The GNU C Library is distributed in the hope that it will be useful,
	10	but WITHOUT ANY WARRANTY; without even the implied warranty of
	11	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	12	Lesser General Public License for more details.
	13
	14	You should have received a copy of the GNU Lesser General Public
75efb018 MF	15	License along with the GNU C Library; if not, see
75efb018 MF	16	<http://www.gnu.org/licenses/>. */
d5efd131 MF	17
	18	#include <stddef.h>
	19	#include <setjmp.h>
	20	#include <signal.h>
	21	#include <pthreadP.h>
	22	#include <jmpbuf-unwind.h>
	23
	24	extern void __sigstack_longjmp (__jmp_buf, int)
	25	__attribute__ ((noreturn));
	26
	27	/* Like __libc_siglongjmp(), but safe for crossing from alternate
	28	signal stack to normal stack. Needed by NPTL. */
	29	void
	30	__libc_unwind_longjmp (sigjmp_buf env, int val)
	31	{
	32	/* Perform any cleanups needed by the frames being unwound. */
	33	__pthread_cleanup_upto (env->__jmpbuf, CURRENT_STACK_FRAME);
	34
	35	if (env[0].__mask_was_saved)
	36	/* Restore the saved signal mask. */
	37	(void) __sigprocmask (SIG_SETMASK, &env[0].__saved_mask,
	38	(sigset_t *) NULL);
	39
	40	/* Call the machine-dependent function to restore machine state. */
	41	__sigstack_longjmp (env[0].__jmpbuf, val ?: 1);
	42	}
	43	hidden_def (__libc_unwind_longjmp)