352 lines
14 KiB
C
352 lines
14 KiB
C
/* armdefs.h -- ARMulator common definitions: 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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#include <stdio.h>
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#include <stdlib.h>
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#define FALSE 0
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#define TRUE 1
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#define LOW 0
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#define HIGH 1
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#define LOWHIGH 1
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#define HIGHLOW 2
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#ifndef __STDC__
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typedef char * VoidStar ;
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#endif
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typedef unsigned long ARMword ; /* must be 32 bits wide */
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typedef struct ARMul_State ARMul_State ;
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typedef unsigned ARMul_CPInits(ARMul_State *state) ;
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typedef unsigned ARMul_CPExits(ARMul_State *state) ;
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typedef unsigned ARMul_LDCs(ARMul_State *state,unsigned type,ARMword instr,ARMword value) ;
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typedef unsigned ARMul_STCs(ARMul_State *state,unsigned type,ARMword instr,ARMword *value) ;
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typedef unsigned ARMul_MRCs(ARMul_State *state,unsigned type,ARMword instr,ARMword *value) ;
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typedef unsigned ARMul_MCRs(ARMul_State *state,unsigned type,ARMword instr,ARMword value) ;
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typedef unsigned ARMul_CDPs(ARMul_State *state,unsigned type,ARMword instr) ;
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typedef unsigned ARMul_CPReads(ARMul_State *state,unsigned reg,ARMword *value) ;
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typedef unsigned ARMul_CPWrites(ARMul_State *state,unsigned reg,ARMword value) ;
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struct ARMul_State {
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ARMword Emulate ; /* to start and stop emulation */
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unsigned EndCondition ; /* reason for stopping */
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unsigned ErrorCode ; /* type of illegal instruction */
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ARMword Reg[16] ; /* the current register file */
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ARMword RegBank[7][16] ; /* all the registers */
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ARMword Cpsr ; /* the current psr */
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ARMword Spsr[7] ; /* the exception psr's */
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ARMword NFlag, ZFlag, CFlag, VFlag, IFFlags ; /* dummy flags for speed */
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#ifdef MODET
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ARMword TFlag ; /* Thumb state */
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#endif
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ARMword Bank ; /* the current register bank */
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ARMword Mode ; /* the current mode */
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ARMword instr, pc, temp ; /* saved register state */
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ARMword loaded, decoded ; /* saved pipeline state */
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unsigned long NumScycles,
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NumNcycles,
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NumIcycles,
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NumCcycles,
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NumFcycles ; /* emulated cycles used */
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unsigned long NumInstrs ; /* the number of instructions executed */
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unsigned NextInstr ;
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unsigned VectorCatch ; /* caught exception mask */
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unsigned CallDebug ; /* set to call the debugger */
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unsigned CanWatch ; /* set by memory interface if its willing to suffer the
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overhead of checking for watchpoints on each memory
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access */
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unsigned MemReadDebug, MemWriteDebug ;
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unsigned long StopHandle ;
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unsigned char *MemDataPtr ; /* admin data */
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unsigned char *MemInPtr ; /* the Data In bus */
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unsigned char *MemOutPtr ; /* the Data Out bus (which you may not need */
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unsigned char *MemSparePtr ; /* extra space */
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ARMword MemSize ;
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unsigned char *OSptr ; /* OS Handle */
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char *CommandLine ; /* Command Line from ARMsd */
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ARMul_CPInits *CPInit[16] ; /* coprocessor initialisers */
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ARMul_CPExits *CPExit[16] ; /* coprocessor finalisers */
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ARMul_LDCs *LDC[16] ; /* LDC instruction */
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ARMul_STCs *STC[16] ; /* STC instruction */
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ARMul_MRCs *MRC[16] ; /* MRC instruction */
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ARMul_MCRs *MCR[16] ; /* MCR instruction */
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ARMul_CDPs *CDP[16] ; /* CDP instruction */
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ARMul_CPReads *CPRead[16] ; /* Read CP register */
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ARMul_CPWrites *CPWrite[16] ; /* Write CP register */
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unsigned char *CPData[16] ; /* Coprocessor data */
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unsigned char const *CPRegWords[16] ; /* map of coprocessor register sizes */
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unsigned EventSet ; /* the number of events in the queue */
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unsigned long Now ; /* time to the nearest cycle */
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struct EventNode **EventPtr ; /* the event list */
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unsigned Exception ; /* enable the next four values */
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unsigned Debug ; /* show instructions as they are executed */
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unsigned NresetSig ; /* reset the processor */
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unsigned NfiqSig ;
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unsigned NirqSig ;
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unsigned abortSig ;
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unsigned NtransSig ;
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unsigned bigendSig ;
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unsigned prog32Sig ;
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unsigned data32Sig ;
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unsigned lateabtSig ;
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ARMword Vector ; /* synthesize aborts in cycle modes */
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ARMword Aborted ; /* sticky flag for aborts */
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ARMword Reseted ; /* sticky flag for Reset */
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ARMword Inted, LastInted ; /* sticky flags for interrupts */
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ARMword Base ; /* extra hand for base writeback */
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ARMword AbortAddr ; /* to keep track of Prefetch aborts */
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const struct Dbg_HostosInterface *hostif;
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int verbose; /* non-zero means print various messages like the banner */
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} ;
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#define ResetPin NresetSig
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#define FIQPin NfiqSig
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#define IRQPin NirqSig
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#define AbortPin abortSig
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#define TransPin NtransSig
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#define BigEndPin bigendSig
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#define Prog32Pin prog32Sig
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#define Data32Pin data32Sig
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#define LateAbortPin lateabtSig
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/***************************************************************************\
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* Types of ARM we know about *
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\***************************************************************************/
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/* The bitflags */
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#define ARM_Fix26_Prop 0x01
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#define ARM_Nexec_Prop 0x02
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#define ARM_Debug_Prop 0x10
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#define ARM_Isync_Prop ARM_Debug_Prop
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#define ARM_Lock_Prop 0x20
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/* ARM2 family */
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#define ARM2 (ARM_Fix26_Prop)
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#define ARM2as ARM2
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#define ARM61 ARM2
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#define ARM3 ARM2
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#ifdef ARM60 /* previous definition in armopts.h */
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#undef ARM60
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#endif
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/* ARM6 family */
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#define ARM6 (ARM_Lock_Prop)
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#define ARM60 ARM6
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#define ARM600 ARM6
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#define ARM610 ARM6
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#define ARM620 ARM6
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/***************************************************************************\
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* Macros to extract instruction fields *
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\***************************************************************************/
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#define BIT(n) ( (ARMword)(instr>>(n))&1) /* bit n of instruction */
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#define BITS(m,n) ( (ARMword)(instr<<(31-(n))) >> ((31-(n))+(m)) ) /* bits m to n of instr */
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#define TOPBITS(n) (instr >> (n)) /* bits 31 to n of instr */
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/***************************************************************************\
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* The hardware vector addresses *
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\***************************************************************************/
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#define ARMResetV 0L
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#define ARMUndefinedInstrV 4L
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#define ARMSWIV 8L
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#define ARMPrefetchAbortV 12L
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#define ARMDataAbortV 16L
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#define ARMAddrExceptnV 20L
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#define ARMIRQV 24L
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#define ARMFIQV 28L
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#define ARMErrorV 32L /* This is an offset, not an address ! */
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#define ARMul_ResetV ARMResetV
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#define ARMul_UndefinedInstrV ARMUndefinedInstrV
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#define ARMul_SWIV ARMSWIV
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#define ARMul_PrefetchAbortV ARMPrefetchAbortV
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#define ARMul_DataAbortV ARMDataAbortV
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#define ARMul_AddrExceptnV ARMAddrExceptnV
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#define ARMul_IRQV ARMIRQV
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#define ARMul_FIQV ARMFIQV
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/***************************************************************************\
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* Mode and Bank Constants *
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\***************************************************************************/
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#define USER26MODE 0L
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#define FIQ26MODE 1L
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#define IRQ26MODE 2L
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#define SVC26MODE 3L
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#define USER32MODE 16L
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#define FIQ32MODE 17L
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#define IRQ32MODE 18L
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#define SVC32MODE 19L
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#define ABORT32MODE 23L
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#define UNDEF32MODE 27L
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#define ARM32BITMODE (state->Mode > 3)
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#define ARM26BITMODE (state->Mode <= 3)
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#define ARMMODE (state->Mode)
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#define ARMul_MODEBITS 0x1fL
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#define ARMul_MODE32BIT ARM32BITMODE
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#define ARMul_MODE26BIT ARM26BITMODE
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#define USERBANK 0
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#define FIQBANK 1
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#define IRQBANK 2
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#define SVCBANK 3
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#define ABORTBANK 4
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#define UNDEFBANK 5
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#define DUMMYBANK 6
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/***************************************************************************\
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* Definitons of things in the emulator *
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\***************************************************************************/
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extern void ARMul_EmulateInit(void) ;
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extern ARMul_State *ARMul_NewState(void) ;
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extern void ARMul_Reset(ARMul_State *state) ;
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extern ARMword ARMul_DoProg(ARMul_State *state) ;
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extern ARMword ARMul_DoInstr(ARMul_State *state) ;
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/***************************************************************************\
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* Definitons of things for event handling *
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\***************************************************************************/
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extern void ARMul_ScheduleEvent(ARMul_State *state, unsigned long delay, unsigned (*func)() ) ;
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extern void ARMul_EnvokeEvent(ARMul_State *state) ;
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extern unsigned long ARMul_Time(ARMul_State *state) ;
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/***************************************************************************\
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* Useful support routines *
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\***************************************************************************/
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extern ARMword ARMul_GetReg(ARMul_State *state, unsigned mode, unsigned reg) ;
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extern void ARMul_SetReg(ARMul_State *state, unsigned mode, unsigned reg, ARMword value) ;
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extern ARMword ARMul_GetPC(ARMul_State *state) ;
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extern ARMword ARMul_GetNextPC(ARMul_State *state) ;
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extern void ARMul_SetPC(ARMul_State *state, ARMword value) ;
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extern ARMword ARMul_GetR15(ARMul_State *state) ;
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extern void ARMul_SetR15(ARMul_State *state, ARMword value) ;
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extern ARMword ARMul_GetCPSR(ARMul_State *state) ;
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extern void ARMul_SetCPSR(ARMul_State *state, ARMword value) ;
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extern ARMword ARMul_GetSPSR(ARMul_State *state, ARMword mode) ;
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extern void ARMul_SetSPSR(ARMul_State *state, ARMword mode, ARMword value) ;
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/***************************************************************************\
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* Definitons of things to handle aborts *
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\***************************************************************************/
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extern void ARMul_Abort(ARMul_State *state, ARMword address) ;
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#define ARMul_ABORTWORD 0xefffffff /* SWI -1 */
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#define ARMul_PREFETCHABORT(address) if (state->AbortAddr == 1) \
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state->AbortAddr = (address & ~3L)
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#define ARMul_DATAABORT(address) state->abortSig = HIGH ; \
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state->Aborted = ARMul_DataAbortV ;
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#define ARMul_CLEARABORT state->abortSig = LOW
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/***************************************************************************\
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* Definitons of things in the memory interface *
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\***************************************************************************/
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extern unsigned ARMul_MemoryInit(ARMul_State *state,unsigned long initmemsize) ;
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extern void ARMul_MemoryExit(ARMul_State *state) ;
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extern ARMword ARMul_LoadInstrS(ARMul_State *state,ARMword address,ARMword isize) ;
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extern ARMword ARMul_LoadInstrN(ARMul_State *state,ARMword address,ARMword isize) ;
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extern ARMword ARMul_ReLoadInstr(ARMul_State *state,ARMword address,ARMword isize) ;
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extern ARMword ARMul_LoadWordS(ARMul_State *state,ARMword address) ;
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extern ARMword ARMul_LoadWordN(ARMul_State *state,ARMword address) ;
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extern ARMword ARMul_LoadHalfWord(ARMul_State *state,ARMword address) ;
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extern ARMword ARMul_LoadByte(ARMul_State *state,ARMword address) ;
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extern void ARMul_StoreWordS(ARMul_State *state,ARMword address, ARMword data) ;
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extern void ARMul_StoreWordN(ARMul_State *state,ARMword address, ARMword data) ;
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extern void ARMul_StoreHalfWord(ARMul_State *state,ARMword address, ARMword data) ;
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extern void ARMul_StoreByte(ARMul_State *state,ARMword address, ARMword data) ;
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extern ARMword ARMul_SwapWord(ARMul_State *state,ARMword address, ARMword data) ;
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extern ARMword ARMul_SwapByte(ARMul_State *state,ARMword address, ARMword data) ;
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extern void ARMul_Icycles(ARMul_State *state,unsigned number, ARMword address) ;
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extern void ARMul_Ccycles(ARMul_State *state,unsigned number, ARMword address) ;
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extern ARMword ARMul_ReadWord(ARMul_State *state,ARMword address) ;
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extern ARMword ARMul_ReadByte(ARMul_State *state,ARMword address) ;
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extern void ARMul_WriteWord(ARMul_State *state,ARMword address, ARMword data) ;
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extern void ARMul_WriteByte(ARMul_State *state,ARMword address, ARMword data) ;
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extern ARMword ARMul_MemAccess(ARMul_State *state,ARMword,ARMword,ARMword,
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ARMword,ARMword,ARMword,ARMword,ARMword,ARMword,ARMword) ;
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/***************************************************************************\
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* Definitons of things in the co-processor interface *
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\***************************************************************************/
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#define ARMul_FIRST 0
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#define ARMul_TRANSFER 1
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#define ARMul_BUSY 2
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#define ARMul_DATA 3
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#define ARMul_INTERRUPT 4
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#define ARMul_DONE 0
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#define ARMul_CANT 1
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#define ARMul_INC 3
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extern unsigned ARMul_CoProInit(ARMul_State *state) ;
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extern void ARMul_CoProExit(ARMul_State *state) ;
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extern void ARMul_CoProAttach(ARMul_State *state, unsigned number,
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ARMul_CPInits *init, ARMul_CPExits *exit,
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ARMul_LDCs *ldc, ARMul_STCs *stc,
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ARMul_MRCs *mrc, ARMul_MCRs *mcr,
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ARMul_CDPs *cdp,
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ARMul_CPReads *read, ARMul_CPWrites *write) ;
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extern void ARMul_CoProDetach(ARMul_State *state, unsigned number) ;
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/***************************************************************************\
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* Definitons of things in the host environment *
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\***************************************************************************/
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extern unsigned ARMul_OSInit(ARMul_State *state) ;
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extern void ARMul_OSExit(ARMul_State *state) ;
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extern unsigned ARMul_OSHandleSWI(ARMul_State *state,ARMword number) ;
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extern ARMword ARMul_OSLastErrorP(ARMul_State *state) ;
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extern ARMword ARMul_Debug(ARMul_State *state, ARMword pc, ARMword instr) ;
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extern unsigned ARMul_OSException(ARMul_State *state, ARMword vector, ARMword pc) ;
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extern int rdi_log ;
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/***************************************************************************\
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* Host-dependent stuff *
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\***************************************************************************/
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#ifdef macintosh
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pascal void SpinCursor(short increment); /* copied from CursorCtl.h */
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# define HOURGLASS SpinCursor( 1 )
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# define HOURGLASS_RATE 1023 /* 2^n - 1 */
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#endif
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