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