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* sysdeps/unix/sysv/linux/hppa/ucontext_i.sym: New file. * sysdeps/unix/sysv/linux/hppa/Makefile: New file. * sysdeps/unix/sysv/linux/hppa/getcontext.S: New file. * sysdeps/unix/sysv/linux/hppa/makecontext.c: New file. * sysdeps/unix/sysv/linux/hppa/setcontext.S: New file. * sysdeps/unix/sysv/linux/hppa/swapcontext.c: New file.
80 lines
2.1 KiB
C
80 lines
2.1 KiB
C
/* Create new context.
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Copyright (C) 2008 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Helge Deller <deller@gmx.de>, 2008.
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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 Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the 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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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <libintl.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <sysdep.h>
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#include <ucontext.h>
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/* XXX: This implementation only handles integer arguments. */
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void
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__makecontext (ucontext_t *ucp, void (*func) (void), int argc, ...)
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{
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unsigned int *sp;
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va_list ap;
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int i;
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if (argc > 8)
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{
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fprintf (stderr, _("\
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makecontext: does not know how to handle more than 8 arguments\n"));
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exit (-1);
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}
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/* Get stack pointer. */
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sp = (unsigned int *) ucp->uc_stack.ss_sp;
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/* Store address to jump to. */
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ucp->uc_mcontext.sc_gr[2] = (unsigned long) func;
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va_start (ap, argc);
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/* Handle arguments. */
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for (i = 0; i < argc; ++i)
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switch (i)
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{
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case 0:
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case 1:
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case 2:
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case 3:
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ucp->uc_mcontext.sc_gr[26-i] = va_arg (ap, int);
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break;
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case 4:
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case 5:
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case 6:
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case 7:
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if (sizeof(unsigned long) == 4) {
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/* 32bit: put arg7-arg4 on stack. */
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sp[7-i] = va_arg (ap, int);
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} else {
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/* 64bit: r19-r22 are arg7-arg4. */
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ucp->uc_mcontext.sc_gr[22+4-i] = va_arg (ap, int);
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}
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break;
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}
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va_end (ap);
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}
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weak_alias(__makecontext, makecontext)
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