// The OS/K Team licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.

#ifndef _ARCH_H
#define _ARCH_H

#define dev_t stddev_t

#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <stdarg.h>
#include <limits.h>

#undef dev_t
#define packed __attribute__ ((__packed__))
#define static_assert _Static_assert
#define alignof _Alignof

typedef unsigned int        bool;
typedef unsigned char       uchar;
typedef unsigned short      ushort;
typedef unsigned int        uint;
typedef unsigned long       ulong;

typedef struct reg_t        reg_t;
typedef struct ctx_t        ctx_t;
typedef struct instr_t      instr_t;
typedef struct acc_t        acc_t;
typedef struct arch_t       arch_t;
typedef struct dev_t        dev_t;

void log(const char *, ...);
void vlog(const char *, va_list);

#define KARCH_MAJOR 0
#define KARCH_MINOR 1
#define KARCH_REVIS 0

struct ctx_t
{
    reg_t   *r;
    instr_t *i;

    // Memory and memory size
    ushort *mp;
    ulong   mz;

    // Read next instruction
    ushort (*get)(ctx_t *ctx);

    // Step by step
    int step;

    // Devices list head
    dev_t *dh;
};

#define R(X) ctx->r[X].val

void dumpregs(ctx_t *);
void dumpinstr(ctx_t *, ulong, uint, ushort, acc_t *, acc_t *);
void dumpmem(ctx_t *, ulong, ulong);

void decode(ctx_t *ctx);

void enable_stdin_echoing(void);
void disable_stdin_echoing(void);

#include <pc/mem.h>
#include <pc/regs.h>
#include <pc/decd.h>
#include <pc/except.h>
#include <in/arch_i.h>

extern reg_t arch_r[NREGS];
extern instr_t arch_i[NINSTRS];

#endif