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/*

 * solaris-cfuncs.S -- C functions for Solaris.

 *

 * Copyright (c) 1996 Cygnus Support

 *

 * The authors hereby grant permission to use, copy, modify, distribute,

 * and license this software and its documentation for any purpose, provided

 * that existing copyright notices are retained in all copies and that this

 * notice is included verbatim in any distributions. No written agreement,

 * license, or royalty fee is required for any of the authorized uses.

 * Modifications to this software may be copyrighted by their authors

 * and need not follow the licensing terms described here, provided that

 * the new terms are clearly indicated on the first page of each file where

 * they apply.

 */

#include <errno.h>

#include <sys/types.h>

#include <sys/stat.h>

#include <sys/unistd.h>

#ifndef __STDC__

#define const

#endif

/* Solaris stat packet */

typedef long            solaris_off_t;

typedef long            solaris_uid_t;

typedef long            solaris_gid_t;

typedef long unsigned   solaris_mode_t;

typedef long unsigned   solaris_nlink_t;

typedef long unsigned   solaris_dev_t;

typedef long unsigned   solaris_ino_t;

typedef long            solaris_time_t;

typedef struct {

  solaris_time_t        tv_sec;

  long                  tv_nsec;

} solaris_timestruc_t;

#define _ST_FSTYPSZ 16

struct solaris_stat {

  solaris_dev_t         st_dev;

  long                  st_pad1[3];

  solaris_ino_t         st_ino;

  solaris_mode_t        st_mode;

  solaris_nlink_t       st_nlink;

  solaris_uid_t         st_uid;

  solaris_gid_t         st_gid;

  solaris_dev_t         st_rdev;

  long                  st_pad2[2];

  solaris_off_t         st_size;

  long                  st_pad3;

  solaris_timestruc_t   st_atim;

  solaris_timestruc_t   st_mtim;

  solaris_timestruc_t   st_ctim;

  long                  st_blksize;

  long                  st_blocks;

  char                  st_fstype[_ST_FSTYPSZ];

  long                  st_pad4[8];

};

/* Solaris termios packet */

#define SOLARIS_NCCS    19

typedef unsigned long solaris_tcflag_t;

typedef unsigned char solaris_cc_t;

typedef unsigned long solaris_speed_t;

struct solaris_termios {

  solaris_tcflag_t      c_iflag;

  solaris_tcflag_t      c_oflag;

  solaris_tcflag_t      c_cflag;

  solaris_tcflag_t      c_lflag;

  solaris_cc_t          c_cc[SOLARIS_NCCS];

};

#define SOLARIS_TIOC    ('T'<<8)

#define SOLARIS_TCGETS  (SOLARIS_TIOC|13)

/* Debug support */

#ifdef DEBUG

#define TRACE(msg) trace (msg)

#define TRACE1(msg,num) trace1 (msg,(unsigned)num)

static void

trace (msg)

     const char *msg;

{

  const char *p;

  for (p = msg; *p != '\0'; p++)

    ;

  (void) write (2, msg, p-msg);

}

static void

trace1 (msg, num)

     const char *msg;

     unsigned int num;

{

  char buffer[16];

  char *p = &buffer[ sizeof(buffer) ];

  trace (msg);

  *--p = '\0';

  *--p = '\n';

  do {

    *--p = '0' + (num % 10);

    num /= 10;

  } while (num != 0);

  trace (p);

}

#else

#define TRACE(msg)

#define TRACE1(msg,num)

#endif

/* Errno support */

int errno;

int *

__errno ()

{

  return &errno;

}

/* syscall handler branches here to set errno.  Error codes

   that are common between newlib and Solaris are the same.  */

int

_cerror (e)

     int e;

{

  TRACE1("got to _cerror ",e);

  errno = e;

  return -1;

}

/* Sbrk support */

extern char _end[];

static char *curbrk = _end;

void *

sbrk (incr)

     size_t incr;

{

  char *oldbrk = curbrk;

  TRACE("got to sbrk\n");

  curbrk += incr;

  if (brk (curbrk) == -1)

    return (char *) -1;

  return (void *)oldbrk;

}

/* Isatty support */

int

isatty (fd)

     int fd;

{

  struct solaris_termios t;

  int ret;

  ret = (ioctl (fd, SOLARIS_TCGETS, &t) == 0);

  TRACE1("got to isatty, returned ", ret);

  return ret;

}

/* Convert Solaris {,f}stat to newlib.

   Fortunately, the st_mode bits are the same.  */

static void

solaris_to_newlib_stat (solaris, newlib)

     struct solaris_stat *solaris;

     struct stat *newlib;

{

  static struct stat zero_stat;

  *newlib = zero_stat;

  newlib->st_dev     = solaris->st_dev;

  newlib->st_ino     = solaris->st_ino;

  newlib->st_mode    = solaris->st_mode;

  newlib->st_nlink   = solaris->st_nlink;

  newlib->st_uid     = solaris->st_uid;

  newlib->st_gid     = solaris->st_gid;

  newlib->st_rdev    = solaris->st_rdev;

  newlib->st_size    = solaris->st_size;

  newlib->st_blksize = solaris->st_blksize;

  newlib->st_blocks  = solaris->st_blocks;

  newlib->st_atime   = solaris->st_atim.tv_sec;

  newlib->st_mtime   = solaris->st_mtim.tv_sec;

  newlib->st_ctime   = solaris->st_ctim.tv_sec;

}

int

stat (file, newlib_stat)

     const char *file;

     struct stat *newlib_stat;

{

  int ret;

  struct solaris_stat st;

  TRACE("got to stat\n");

  ret = _stat (file, &st);

  if (ret >= 0)

    solaris_to_newlib_stat (&st, newlib_stat);

  return ret;

}

int

lstat (file, newlib_stat)

     const char *file;

     struct stat *newlib_stat;

{

  int ret;

  struct solaris_stat st;

  TRACE("got to lstat\n");

  ret = _lstat (file, &st);

  if (ret >= 0)

    solaris_to_newlib_stat (&st, newlib_stat);

  return ret;

}

int

fstat (fd, newlib_stat)

     int fd;

     struct stat *newlib_stat;

{

  int ret;

  struct solaris_stat st;

  TRACE("got to fstat\n");

  ret = _fstat (fd, &st);

  if (ret >= 0)

    solaris_to_newlib_stat (&st, newlib_stat);

  return ret;

}

/* Nops */

int

getrusage ()

{

  _cerror (EINVAL);

  return -1;

}

char *

getcwd(buf, size)

     char *buf;

     size_t size;

{

  if (!buf || size < 2)

    return ".";

  buf[0] = '.';

  buf[1] = '\0';

  return buf;

}