#ifndef __MAIN_H__
#define __MAIN_H__

#define NOT_REACHED  1 /* to keep lcc -A happy */
#define MAXFDS      64
#define PGSZ       4096 /* pagesize */

typedef enum { TopLevel=0, Fatal, Benign } EType;
enum { REG_V0=2, REG_RES=2, REG_A0=4, REG_A1, REG_A2, REG_A3, REG_ERR=7,
       REG_GP=28, REG_SP, REG_S8, REG_RA };
enum { GENREGS = (1<<0), FPREGS = (1<<1) };

typedef struct run_struct {
    unsigned paddress;
    unsigned arg;
} run_struct;

#ifndef RUNC
extern unsigned int R[]; /* CPU registers */
extern unsigned int CpCond[], CCR[][32], CPR[][32];
extern float FGR[];      /* FPU registers */
extern double *FPR;
extern int *FWR;
extern unsigned int pc, npc, nnpc, HI, LO;
extern unsigned int ownedfp;  /* has the proc ever used the FPU ? */
extern int prog_fds[];                  /* for fd translation */
#endif
/*
 * Find the size of the array
 */
#define asize(x)         (sizeof(x) / sizeof(x[0]))
#define DEFRUN           0x7fffffff     /* default run steps */
#define BadVAddr        (CPR[0][8])
#define Cause           (CPR[0][13])
#define FpCond          (CPR[1][31])
#define ROUND(V, B) (((int) V + (B-1)) & ~(B-1))
/* Sign-extend a short to a long */
#define SIGNEX(X)	(((X) & 0x8000) ? ((X) | 0xffff0000) : (X))
#define	STACK_ALIGN(x)	((unsigned)(x) &~ ((4*sizeof(int))-1))

typedef void *             host_addr;     /* an address on the simulation host */

/* types on the simulated host (MIPS): */
typedef unsigned long int  mem_addr;
typedef unsigned int       mem_word;
typedef unsigned short int mem_half;
typedef unsigned char      mem_byte;

/*
 * global definitions settable on the command line 
 */
extern int systrace;
/* signals.c */
extern void setup_signal_stack(void);
extern void dosigreturn(void);
extern void initsighandler(void);
extern void sighandle();
/* main.c */
/* mem.c -> mem.h */
extern void print_memstats(void);
/* ${SYSTEM}-syscall.c */
extern int dosyscall(void);
/* print.c */
extern void print(unsigned int, unsigned int);
/* read-aout.c */
extern int read_symbols(char *);
extern int readaout(char *);
/* run.c */
extern int run(run_struct *rs);
extern void endofrun(void);
/* utils.c */
extern void error(EType, char *, ...);
extern void initfds(void);
extern void restorefds(void);
extern void *galloc(int);
extern void *grealloc(void *p, int size);
extern char *strsave(char *);
extern int strprefix(char *s, char *t, int c);
extern void dumpregs(int);

/* stuff in libc.a */
extern void bzero(char *, int);
extern int close(int), dup(int), dup2(int, int);
extern int syscall(int, ...);

#endif __MAIN_H__