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/* prmc.h: MUTATOR CONTEXT INTERFACE
*
* $Id$
* Copyright (c) 2016-2020 Ravenbrook Limited. See end of file for license.
*
* See <design/prmc> for the design of the generic interface including
* the contracts for these functions.
*
* This interface has several different implementations, typically one
* per platform, see <code/prmc*.c> for the various implementations.
*/
#ifndef prmc_h
#define prmc_h
#include "mpmtypes.h"
#define MutatorContextSig ((Sig)0x519302C0) /* SIGnature MUTator COntext */
enum {
MutatorContextFAULT, /* Context of thread stopped by protection fault. */
MutatorContextTHREAD, /* Context of thread stopped by thread manager. */
MutatorContextLIMIT
};
typedef unsigned MutatorContextVar;
extern Bool MutatorContextCheck(MutatorContext context);
extern Bool MutatorContextCanStepInstruction(MutatorContext context);
extern Res MutatorContextStepInstruction(MutatorContext context);
extern Addr MutatorContextSP(MutatorContext context);
extern Res MutatorContextScan(ScanState ss, MutatorContext context,
mps_area_scan_t scan, void *closure);
#endif /* prmc_h */
/* C. COPYRIGHT AND LICENSE
*
* Copyright (C) 2016-2020 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.
*/
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