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/* Simulator for Motorola's MCore processor
Copyright (C) 2009-2023 Free Software Foundation, Inc.
This file is part of the GNU simulators.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#ifndef MCORE_SIM_H
#define MCORE_SIM_H
#include <stdint.h>
/* The machine state.
This state is maintained in host byte order. The
fetch/store register functions must translate between host
byte order and the target processor byte order.
Keeping this data in target byte order simplifies the register
read/write functions. Keeping this data in native order improves
the performance of the simulator. Simulation speed is deemed more
important. */
/* The ordering of the mcore_regset structure is matched in the
gdb/config/mcore/tm-mcore.h file in the REGISTER_NAMES macro. */
struct mcore_regset
{
int32_t gregs[16]; /* primary registers */
int32_t alt_gregs[16]; /* alt register file */
int32_t cregs[32]; /* control registers */
int32_t pc;
};
#define LAST_VALID_CREG 32 /* only 0..12 implemented */
#define NUM_MCORE_REGS (16 + 16 + LAST_VALID_CREG + 1)
struct mcore_sim_cpu {
union
{
struct mcore_regset regs;
/* Used by the fetch/store reg helpers to access registers linearly. */
int32_t asints[NUM_MCORE_REGS];
};
/* Used to switch between gregs/alt_gregs based on the control state. */
int32_t *active_gregs;
int ticks;
int stalls;
int cycles;
int insts;
};
#define MCORE_SIM_CPU(cpu) ((struct mcore_sim_cpu *) CPU_ARCH_DATA (cpu))
#endif
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