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/* prmcfri3.c: MUTATOR CONTEXT INTEL 386 (FREEBSD)
 *
 * $Id: //info.ravenbrook.com/project/mps/master/code/prmcfri3.c#16 $
 * Copyright (c) 2001-2020 Ravenbrook Limited.  See end of file for license.
 *
 * .purpose: Implement the mutator context module. <design/prmc>.
 *
 *
 * SOURCES
 *
 * .source.i486: Intel486 Microprocessor Family Programmer's
 * Reference Manual
 *
 *
 * ASSUMPTIONS
 *
 * .sp: The stack pointer in the context is ESP.
 */

#include "prmcix.h"
#include "prmci3.h"

SRCID(prmcfri3, "$Id: //info.ravenbrook.com/project/mps/master/code/prmcfri3.c#16 $");

#if !defined(MPS_OS_FR) || !defined(MPS_ARCH_I3)
#error "prmcfri3.c is specific to MPS_OS_FR and MPS_ARCH_I3"
#endif


Addr MutatorContextSP(MutatorContext context)
{
  AVERT(MutatorContext, context);
  return (Addr)context->ucontext->uc_mcontext.mc_esp;   /* .sp */
}


/* C. COPYRIGHT AND LICENSE
 *
 * Copyright (C) 2001-2020 Ravenbrook Limited <https://www.ravenbrook.com/>.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the
 *    distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */