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aeba9785a6
2001-03-16 David Mosberger <davidm@hpl.hp.com> * sysdeps/unix/sysv/linux/ia64/bits/sigcontext.h (struct sigcontext): Drop hack that was needed for 2.1.1 kernel headers. * sysdeps/unix/sysv/linux/ia64/ucontext_i.h: New file. * sysdeps/unix/sysv/linux/ia64/sys/ucontext.h: Rewrite to make it overlay with kernel's "struct sigcontext". * sysdeps/unix/sysv/linux/ia64/Makefile (sysdep_headers): Add sys/rse.h for "misc" subdir. (sysdep_routines): Add __start_context for "stdlib" subdir. * sysdeps/unix/sysv/linux/ia64/sys/rse.h: New file (based on kernel file of the same name). * stdlib/Makefile (tests): Add tst-setcontext. * stdlib/tst-setcontext.c: New file (based on a sample program by Uli Drepper). * sysdeps/unix/sysv/linux/ia64/setcontext.S: New file. * sysdeps/unix/sysv/linux/ia64/getcontext.S: New file. * sysdeps/unix/sysv/linux/ia64/__start_context.S: New file. * sysdeps/unix/sysv/linux/ia64/makecontext.c: New file. * sysdeps/unix/sysv/linux/ia64/__longjmp.S (__longjmp): Use extr.u instead of shift & and.
114 lines
2.6 KiB
C
114 lines
2.6 KiB
C
/* Copyright (C) 2001 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <ucontext.h>
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static ucontext_t ctx[3];
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static int was_in_f1;
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static int was_in_f2;
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static void
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f1 (long a0, long a1, long a2, long a3)
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{
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printf ("start f1(a0=%lx,a1=%lx,a2=%lx,a3=%lx)\n", a0, a1, a2, a3);
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if (a0 != 1 || a1 != 2 || a2 != 3 || a3 != -4)
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{
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puts ("arg mismatch");
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exit (-1);
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}
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if (swapcontext (&ctx[1], &ctx[2]) != 0)
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{
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printf ("%s: swapcontext: %m\n", __FUNCTION__);
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exit (1);
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}
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puts ("finish f1");
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was_in_f1 = 1;
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}
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static void
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f2 (void)
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{
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puts ("start f2");
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if (swapcontext (&ctx[2], &ctx[1]) != 0)
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{
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printf ("%s: swapcontext: %m\n", __FUNCTION__);
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exit (1);
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}
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puts ("finish f2");
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was_in_f2 = 1;
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}
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int
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main (void)
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{
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char st1[8192];
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char st2[8192];
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puts ("making contexts");
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if (getcontext (&ctx[1]) != 0)
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{
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if (errno == ENOSYS)
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exit (0);
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printf ("%s: getcontext: %m\n", __FUNCTION__);
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exit (1);
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}
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ctx[1].uc_stack.ss_sp = st1;
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ctx[1].uc_stack.ss_size = sizeof st1;
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ctx[1].uc_link = &ctx[0];
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makecontext (&ctx[1], (void (*) (void)) f1, 4, 1, 2, 3, -4);
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if (getcontext (&ctx[2]) != 0)
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{
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printf ("%s: second getcontext: %m\n", __FUNCTION__);
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exit (1);
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}
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ctx[2].uc_stack.ss_sp = st2;
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ctx[2].uc_stack.ss_size = sizeof st2;
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ctx[2].uc_link = &ctx[1];
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makecontext (&ctx[2], f2, 0);
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puts ("swapping contexts");
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if (swapcontext (&ctx[0], &ctx[2]) != 0)
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{
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printf ("%s: swapcontext: %m\n", __FUNCTION__);
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exit (1);
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}
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puts ("back at main program");
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if (was_in_f1 == 0)
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{
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puts ("didn't reach f1");
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exit (1);
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}
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if (was_in_f2 == 0)
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{
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puts ("didn't reach f2");
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exit (1);
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}
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puts ("test succeeded");
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return 0;
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}
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