#ifndef MINIMALSYS_H
#define MINIMALSYS_H

#include "int.h"

void exit(int8_t status);

#define STDIN  0
#define STDOUT 1
#define STDERR 2
intptr_t write(int32_t fd, const void* buf, intptr_t size);
intptr_t read(int32_t fd, const void* buf, intptr_t size);

#define O_RDONLY       00
#define O_WRONLY       01
#define O_RDWR         02
#define AT_FDCWD      -100

#if defined(__mips__)
  // linux/arch/mips/include/uapi/asm/fcntl.h
  #define O_APPEND	0x0008
  #define O_CREAT		0x0100	/* not fcntl */
  #define O_TRUNC		0x0200	/* not fcntl */
  #define O_EXCL		0x0400	/* not fcntl */
  #define O_NOCTTY	0x0800	/* not fcntl */
#else
  // linux/include/uapi/asm-generic/fcntl.h
  #define O_CREAT        1<<6
  #define O_EXCL         1<<7
  #define O_NOCTTY       1<<8
  #define O_TRUNC        1<<9
  #define O_APPEND       1<<10
#endif 
int32_t openat(int32_t fd, const char* filename, uint32_t flags, uint32_t mode);
#define open(...) openat(AT_FDCWD, __VA_ARGS__, 0)
#define openc(...) openat(AT_FDCWD, __VA_ARGS__)
int close(unsigned int fd);
int fsync(unsigned int fd);

// Socket syscalls
int socket(int domain, int type, int protocol);
int setsockopt(int sockfd, int level, int optname, const void* optval, socklen_t optlen);
int bind(int sockfd, const void* sockaddr, socklen_t addrlen);
int listen(int fd, int backlog);
int accept(int sockfd, void* addr, socklen_t* addrlen);
int connect(int sockfd, void* addr, socklen_t addrlen);
ssize_t sendto(int sockfd, const void* buf, size_t size, int flags, const void* sockaddr, socklen_t addrlen);
#define send(sockfd, buf, size, flags) sendto(sockfd, buf, size, flags, 0, 0)
ssize_t recvfrom(int sockfd, const void* buf, size_t size, int flags, const void* sockaddr, socklen_t addrlen);
#define recv(sockfd, buf, size, flags) recvfrom(sockfd, buf, size, flags, 0, 0)
// Socket Domain constants
typedef unsigned short  sa_family_t;
/* Supported address families. */
#define AF_UNIX     1   /* Unix domain sockets      */
#define AF_LOCAL    1   /* POSIX name for AF_UNIX   */
#define AF_INET     2   /* Internet IP Protocol     */
#define AF_AX25     3   /* Amateur Radio AX.25      */
#define AF_INET6    10  /* IP version 6         */
#define AF_ROSE     11  /* Amateur Radio X.25 PLP   */
#define AF_PACKET   17  /* Packet family        */
#define AF_CAN      29  /* Controller Area Network      */
#define AF_BLUETOOTH    31  /* Bluetooth sockets        */
// Socket type constants

#if defined(__mips__)
  // File: include/asm-mips/socket.h
  enum sock_type {
    SOCK_DGRAM      = 1,
    SOCK_STREAM     = 2,
    SOCK_RAW        = 3,
    SOCK_RDM        = 4,
    SOCK_SEQPACKET  = 5,
    SOCK_DCCP       = 6,
    SOCK_PACKET     = 10,
  };
  #define SOL_SOCKET    0xffff

  #define SO_DEBUG      0x0001  /* Record debugging information.  */
  #define SO_REUSEADDR  0x0004  /* Allow reuse of local addresses.  */
  #define SO_TYPE       0x1008  /* Compatible name for SO_STYLE.  */
  #define SO_ERROR      0x1007  /* get error status and clear */
  #define SO_DONTROUTE  0x0010  /* Don't do local routing.  */
  #define SO_BROADCAST  0x0020  /* Allow transmission of broadcast messages.  */
  #define SO_SNDBUF     0x1001  /* Send buffer size. */
  #define SO_RCVBUF     0x1002  /* Receive buffer. */
  #define SO_KEEPALIVE  0x0008  /* Keep connections alive and send SIGPIPE when they die.  */
  #define SO_OOBINLINE  0x0100  /* Receive out-of-band data in-band.  */
  #define SO_LINGER     0x0080  /* Block on close of a reliable socket to transmit pending data.  */
  #define SO_REUSEPORT  0x0200  /* Allow local address and port reuse.  */
  #define SO_RCVLOWAT   0x1004  /* receive low-water mark */
  #define SO_SNDLOWAT   0x1003  /* send low-water mark */
  #define SO_RCVTIMEO   0x1006  /* receive timeout */
  #define SO_SNDTIMEO   0x1005  /* send timeout */
#else
  enum sock_type {
    SOCK_STREAM = 1,
    SOCK_DGRAM  = 2,
    SOCK_RAW    = 3,
    SOCK_RDM    = 4,
    SOCK_SEQPACKET  = 5,
    SOCK_DCCP   = 6,
    SOCK_PACKET = 10,
  };
  #define SOL_SOCKET  1

  #define SO_DEBUG        1
  #define SO_REUSEADDR    2
  #define SO_TYPE         3
  #define SO_ERROR        4
  #define SO_DONTROUTE    5
  #define SO_BROADCAST    6
  #define SO_SNDBUF       7
  #define SO_RCVBUF       8
  #define SO_KEEPALIVE    9
  #define SO_OOBINLINE    10
  #define SO_LINGER       13
  #define SO_REUSEPORT    15
  #define SO_RCVLOWAT     18
  #define SO_SNDLOWAT     19
  #define SO_RCVTIMEO     20
  #define SO_SNDTIMEO     21
#endif
#define SO_STYLE      SO_TYPE /* Synonym */
/* linux-specific, might as well be the same as on i386 */
#define SO_NO_CHECK 11
#define SO_PRIORITY 12
#define SO_BSDCOMPAT    14
#define SO_PASSCRED 17
#define SO_PEERCRED 18

// Time management
#define CLOCK_REALTIME           0
#define CLOCK_MONOTONIC          1
#define CLOCK_PROCESS_CPUTIME_ID 2
#define CLOCK_THREAD_CPUTIME_ID  3
#define TIMER_ABSTIME 0x01
int clock_settime(clockid_t clockid, const struct timespec *tp);
int clock_gettime(clockid_t clockid, struct timespec *tp);
int clock_getres(clockid_t clockid, struct timespec *res);
int clock_nanosleep(clockid_t clockid, int flags, const struct timespec *t, struct timespec* remain);
#define nanosleep(t, remain) clock_nanosleep(CLOCK_MONOTONIC, 0, t, remain)

uint32_t fork();

void *memset(void* s, int c, unsigned long n);

#endif // !MINIMALSYS_H