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/*
Title: machine_dep.h - exports signature for machine_dep.c
Copyright (c) 2000
Cambridge University Technical Services Limited
This 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.
This 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 this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef _MACHINE_DEP_H
#define _MACHINE_DEP_H
class ScanAddress;
class TaskData;
class SaveVecEntry;
typedef SaveVecEntry *Handle;
class StackSpace;
// Machine architecture values.
typedef enum {
MA_Interpreted = 0,
MA_I386,
MA_X86_64
} Architectures;
// Machine-dependent module.
class MachineDependent {
public:
virtual ~MachineDependent() {} // Keep the compiler happy
// Create the machine-specific task data object.
virtual TaskData *CreateTaskData(void) = 0;
virtual unsigned InitialStackSize(void) { return 128; } // Initial size of a stack
// Must be > 40 (i.e. 2*min_stack_check) + base area in each stack frame
/* ScanConstantsWithinCode - update addresses within a code segment.*/
virtual void ScanConstantsWithinCode(PolyObject *addr, PolyObject *oldAddr, POLYUNSIGNED length, ScanAddress *process) {}
void ScanConstantsWithinCode(PolyObject *addr, ScanAddress *process)
{ ScanConstantsWithinCode(addr, addr, addr->Length(), process); } // Common case
virtual void FlushInstructionCache(void *p, POLYUNSIGNED bytes) {}
virtual Architectures MachineArchitecture(void) = 0;
};
extern MachineDependent *machineDependent;
extern struct _entrypts machineSpecificEPT[];
#endif /* _MACHINE_DEP_H */
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