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/* armemu.h -- ARMulator emulation macros: ARM6 Instruction Emulator.
Copyright (C) 1994 Advanced RISC Machines Ltd.
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 2 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, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#pragma once
#include "core/arm/skyeye_common/armdefs.h"
// Flags for use with the APSR.
enum : u32 {
NBIT = (1U << 31U),
ZBIT = (1 << 30),
CBIT = (1 << 29),
VBIT = (1 << 28),
QBIT = (1 << 27),
JBIT = (1 << 24),
EBIT = (1 << 9),
ABIT = (1 << 8),
IBIT = (1 << 7),
FBIT = (1 << 6),
TBIT = (1 << 5),
// Masks for groups of bits in the APSR.
MODEBITS = 0x1F,
INTBITS = 0x1C0,
};
// Different ways to start the next instruction.
enum {
SEQ = 0,
NONSEQ = 1,
PCINCEDSEQ = 2,
PCINCEDNONSEQ = 3,
PRIMEPIPE = 4,
RESUME = 8
};
// Values for Emulate.
enum {
STOP = 0, // Stop
CHANGEMODE = 1, // Change mode
ONCE = 2, // Execute just one interation
RUN = 3 // Continuous execution
};
#define FLUSHPIPE state->NextInstr |= PRIMEPIPE
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