60 lines
1.7 KiB
C
60 lines
1.7 KiB
C
/* armemu.h -- ARMulator emulation macros: ARM6 Instruction Emulator.
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Copyright (C) 1994 Advanced RISC Machines Ltd.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#pragma once
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#include "core/arm/skyeye_common/armdefs.h"
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// Flags for use with the APSR.
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enum : u32 {
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NBIT = (1U << 31U),
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ZBIT = (1 << 30),
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CBIT = (1 << 29),
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VBIT = (1 << 28),
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QBIT = (1 << 27),
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JBIT = (1 << 24),
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EBIT = (1 << 9),
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ABIT = (1 << 8),
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IBIT = (1 << 7),
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FBIT = (1 << 6),
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TBIT = (1 << 5),
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// Masks for groups of bits in the APSR.
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MODEBITS = 0x1F,
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INTBITS = 0x1C0,
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};
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// Different ways to start the next instruction.
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enum {
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SEQ = 0,
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NONSEQ = 1,
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PCINCEDSEQ = 2,
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PCINCEDNONSEQ = 3,
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PRIMEPIPE = 4,
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RESUME = 8
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};
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// Values for Emulate.
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enum {
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STOP = 0, // Stop
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CHANGEMODE = 1, // Change mode
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ONCE = 2, // Execute just one interation
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RUN = 3 // Continuous execution
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};
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#define FLUSHPIPE state->NextInstr |= PRIMEPIPE
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