typedef char s8int;

typedef char s8int;
typedef short s16int;
typedef int s32int;
typedef vlong s64int;

extern u32int r[16];
extern u32int ps;
extern u32int curpc;
extern int trace;

#define U32(x) ((x)[0] | (x)[1] << 8 | (x)[2] << 16 | (x)[3] << 24)

typedef struct Segment Segment;
typedef struct Chan Chan;

struct Segment {
enum {
SEGRO = 1,
} flags;
u32int start, size;
u32int *data;
};

extern Segment segs[3];

enum {
STACKSIZE = 16*1024*1024
};

enum {
EPERM = 1,
ENOENT = 2,
EIO = 5,
EBADF = 9,
EINVAL = 22,
EMFILE = 24,
ENOTTY = 25,
};

struct Chan {
int fd;
enum {
DONTCLOSE = 1,
DIR = 2,
FAKETTY = 4,
} flags;
char *buf, *bufp, *bufe;
};

enum { NCHANS = 128 };

enum {
FLAGN = 8,
FLAGZ = 4,
FLAGV = 2,
FLAGC = 1,
};