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/*

 * hosted & unhosted io support.

 *

 * Copyright (c) 2006 CodeSourcery Inc

 *

 * 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.

 */

#if HOSTED

#include <stdint.h>

#include <sys/types.h>

#include <sys/time.h>

#include <sys/stat.h>

#define HOSTED_EXIT  0

#define HOSTED_INIT_SIM 1

#define HOSTED_OPEN 2

#define HOSTED_CLOSE 3

#define HOSTED_READ 4

#define HOSTED_WRITE 5

#define HOSTED_LSEEK 6

#define HOSTED_RENAME 7

#define HOSTED_UNLINK 8

#define HOSTED_STAT 9

#define HOSTED_FSTAT 10

#define HOSTED_GETTIMEOFDAY 11

#define HOSTED_ISATTY 12

#define HOSTED_SYSTEM 13

/* This function is provided by the board's BSP, because the precise

   mechanism of informing gdb is board specific.  */

extern int __io_hosted (int func, void *args);

/* Protocol specific representation of datatypes, as specified in D.9.11

 * of the GDB manual.

 * Note that since the m68k is big-endian, we can use native

 * representations of integer datatypes in structured datatypes. */

typedef uint32_t gdb_mode_t;

typedef uint32_t gdb_time_t;

struct gdb_stat {

  uint32_t    st_dev;     /* device */

  uint32_t    st_ino;     /* inode */

  gdb_mode_t  st_mode;    /* protection */

  uint32_t    st_nlink;   /* number of hard links */

  uint32_t    st_uid;     /* user ID of owner */

  uint32_t    st_gid;     /* group ID of owner */

  uint32_t    st_rdev;    /* device type (if inode device) */

  uint64_t    st_size;    /* total size, in bytes */

  uint64_t    st_blksize; /* blocksize for filesystem I/O */

  uint64_t    st_blocks;  /* number of blocks allocated */

  gdb_time_t  st_atime;   /* time of last access */

  gdb_time_t  st_mtime;   /* time of last modification */

  gdb_time_t  st_ctime;   /* time of last change */

};

struct gdb_timeval {

  gdb_time_t tv_sec;  /* second */

  uint64_t tv_usec;   /* microsecond */

};

/* Parameters are passed between the library and the debugging stub

 * in a fixed-size buffer.

 */

typedef uint32_t gdb_parambuf_t[4];

/* open flags */

#define GDB_O_RDONLY   0x0

#define GDB_O_WRONLY   0x1

#define GDB_O_RDWR     0x2

#define GDB_O_APPEND   0x8

#define GDB_O_CREAT  0x200

#define GDB_O_TRUNC  0x400

#define GDB_O_EXCL   0x800

/* mode_t values */

#define GDB_S_IFREG 0100000

#define GDB_S_IFDIR  040000

#define GDB_S_IRUSR    0400

#define GDB_S_IWUSR    0200

#define GDB_S_IXUSR    0100

#define GDB_S_IRGRP     040

#define GDB_S_IWGRP     020

#define GDB_S_IXGRP     010

#define GDB_S_IROTH      04

#define GDB_S_IWOTH      02

#define GDB_S_IXOTH      01

/* errno values */

#define GDB_EPERM         1

#define GDB_ENOENT        2

#define GDB_EINTR         4

#define GDB_EBADF         9

#define GDB_EACCES       13

#define GDB_EFAULT       14

#define GDB_EBUSY        16

#define GDB_EEXIST       17

#define GDB_ENODEV       19

#define GDB_ENOTDIR      20

#define GDB_EISDIR       21

#define GDB_EINVAL       22

#define GDB_ENFILE       23

#define GDB_EMFILE       24

#define GDB_EFBIG        27

#define GDB_ENOSPC       28

#define GDB_ESPIPE       29

#define GDB_EROFS        30

#define GDB_ENAMETOOLONG 91

#define GDB_EUNKNOWN     9999

/* lseek flags */

#define GDB_SEEK_SET 0

#define GDB_SEEK_CUR 1

#define GDB_SEEK_END 2

/* conversion functions */

extern gdb_mode_t __hosted_to_gdb_mode_t (mode_t m);

extern int32_t __hosted_to_gdb_open_flags (int f);

extern int32_t __hosted_to_gdb_lseek_flags (int f);

extern void __hosted_from_gdb_stat (const struct gdb_stat *gs,

                                    struct stat *s);

extern void __hosted_from_gdb_timeval (const struct gdb_timeval *gt,

                                       struct timeval *t);

extern int __hosted_from_gdb_errno (int32_t err);

#else

#ifdef IO

#define IO_NAME_(IO) __hosted_##IO

#define IO_NAME(IO) IO_NAME_(IO)

#define IO_STRING_(IO) #IO

#define IO_STRING(IO) IO_STRING_(IO)

/* Emit an object that causes a gnu linker warning.  */

static const char IO_NAME (IO) []

__attribute__ ((section (".gnu.warning"), used)) =

"IO function '" IO_STRING (IO) "' used";

#endif

#endif