/*  * This file is part of the UCB release of Plan 9. It is subject to the license * terms in the LICENSE file found in the top-level directory of this * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No * part of the UCB release of Plan 9, including this file, may be copied, * modified, propagated, or distributed except according to the terms contained * in the LICENSE file. */ /* * mipsim.h */#include "/mips/include/ureg.h"#define	USERADDR	0xC0000000#define	UREGADDR	(USERADDR+BY2PG-4-0xA0)#define USER_REG(x)	(UREGADDR+(ulong)(x))#define	REGOFF(x)	(USER_REG(&((struct Ureg *) 0)->x)) typedef struct Registers Registers;typedef struct Segment Segment;typedef struct Memory Memory;typedef struct Mul Mul;typedef struct Mulu Mulu;typedef struct Inst Inst;typedef struct Icache Icache;typedef struct Tlb Tlb;typedef struct Breakpoint Breakpoint; enum{	Instruction	= 1,	Read		= 2,	Write		= 4,	Access		= 2|4,	Equal		= 4|8,}; struct Breakpoint{	int		type;		/* Instruction/Read/Access/Write/Equal */	ulong		addr;		/* Place at address */	int		count;		/* To execute count times or value */	int		done;		/* How many times passed through */	Breakpoint	*next;		/* Link to next one */}; enum{	Iload,	Istore,	Iarith,	Ibranch,	Ireg,	Isyscall,	Ifloat,}; enum{	Nmaxtlb = 64,}; struct Tlb{	int	on;			/* Being updated */	int	tlbsize;		/* Number of entries */	ulong	tlbent[Nmaxtlb];	/* Virtual address tags */	int	hit;			/* Number of successful tag matches */	int	miss;			/* Number of failed tag matches */};		 struct Icache{	int	on;			/* Turned on */	int	linesize;		/* Line size in bytes */	int	stall;			/* Cache stalls */	int	*lines;			/* Tag array */	int*	(*hash)(ulong);		/* Hash function */	char	*hashtext;		/* What the function looks like */}; struct Inst{	void 	(*func)(ulong);	char	*name;	int	type;	int	count;	int	taken;	int	useddelay;}; struct Registers{	ulong	pc;	ulong	ir;	Inst	*ip;	long	r[32];	ulong	mhi;	ulong	mlo; 	ulong	fpsr;	union {		double	fd[16];		float	fl[32];		ulong	di[32];	};	char	ft[32];}; enum{	FPd	= 0,	FPs,	FPmemory,};#define dreg(r)	((r)>>1) struct Mulu{	ulong lo;	ulong hi;}; struct Mul{	long lo;	long hi;}; enum{	MemRead,	MemReadstring,	MemWrite,}; enum{	Stack,	Text,	Data,	Bss,	Nseg,}; struct Segment{	short	type;	ulong	base;	ulong	end;	ulong	fileoff;	ulong	fileend;	int	rss;	int	refs;	uchar	**table;}; struct Memory{	Segment	seg[Nseg];}; void		fatal(int, char*, ...);void		run(void);void		undef(ulong);void		dumpreg(void);void		dumpfreg(void);void		dumpdreg(void);void*		emalloc(ulong);void*		erealloc(void*, ulong, ulong);void*		vaddr(ulong);int		badvaddr(ulong, int);void		itrace(char *, ...);void		segsum(void);void		Ssyscall(ulong);char*		memio(char*, ulong, int, int);ulong		ifetch(ulong);ulong		getmem_w(ulong);ushort		getmem_h(ulong);void		putmem_w(ulong, ulong);uchar		getmem_b(ulong);void		putmem_b(ulong, uchar);ulong		getmem_4(ulong);ulong		getmem_2(ulong);void		putmem_h(ulong, short);Mul		mul(long, long);Mulu		mulu(ulong, ulong);void		isum(void);void		initicache(void);void		updateicache(ulong addr);void		tlbsum(void);long		lnrand(long);void		randseed(long, long);void		cmd(void);void		brkchk(ulong, int);void		delbpt(char*);void		breakpoint(char*, char*);char*		nextc(char*);ulong		expr(char*);void		initmap(void);void		inithdr(int);void		initstk(int, char**);void		reset(void);void		dobplist(void);int		_mipscoinst(Map*, uvlong, char*, int);void		procinit(int);void		printsource(long);void		printparams(Symbol *, ulong);void		printlocals(Symbol *, ulong);void		stktrace(int);void		iprofile(void); /* Globals */Extern 		Registers reg;Extern 		Memory memory;Extern		int text;Extern		int trace;Extern 		int sysdbg;Extern 		int calltree;Extern		Inst itab[];Extern		Inst ispec[];Extern		Icache icache;Extern		Tlb tlb;Extern		int count;Extern		jmp_buf errjmp;Extern		Breakpoint *bplist;Extern		int atbpt;Extern		int membpt;Extern		int cmdcount;Extern		int nopcount;Extern		ulong dot;extern		char *file;Extern		Biobuf *bioout;Extern		Biobuf *bin;Extern		ulong *iprof;extern		int datasize;Extern		Map *symmap;		Extern		int rtrace; /* Plan9 Kernel constants */#define	BY2PG		(16*1024)#define BY2WD		4#define UTZERO		0x1000#define STACKTOP	0x80000000#define STACKSIZE	0x10000 #define PROFGRAN	4/* Opcode decoders */#define Getrsrt(s,t,i)		s = (i>>21)&0x1f; t = (i>>16)&0x1f;#define Getrbrt(b,t,i)		b = (i>>21)&0x1f; t = (i>>16)&0x1f;#define Get3(s, t, d, i)	s = (i>>21)&0x1f; t = (i>>16)&0x1f; d = (i>>11)&0x1f;#define Getf3(s, t, d, i)	s = (i>>11)&0x1f; t = (i>>16)&0x1f; d = (i>>6)&0x1f;#define Getf2(s, d, i)		s = (i>>11)&0x1f; d = (i>>6)&0x1f;#define SpecialGetrtrd(t, d, i)	t = (i>>16)&0x1f; d = (i>>11)&0x1f; #define INOPINST	"nor"#define INOP		0x00000027	/* Instruction used as nop */#define SIGNBIT		0x80000000#define Iexec(ir)	{Inst *i; i = &itab[(ir)>>26]; reg.ip = i; i->count++; (*i->func)(ir); }#define Statbra()	reg.ip->taken++; if(reg.ir != INOP) reg.ip->useddelay++; #define FP_U		3#define FP_L		1#define FP_G		2#define FP_E		0#define FP_CBIT		(1<<23)