libgloss/visium/io.h

   1 /*
   2  * hosted io support.
   3  *
   4  * Copyright (c) 2006 CodeSourcery Inc
   5  *
   6  * The authors hereby grant permission to use, copy, modify, distribute,
   7  * and license this software and its documentation for any purpose, provided
   8  * that existing copyright notices are retained in all copies and that this
   9  * notice is included verbatim in any distributions. No written agreement,
  10  * license, or royalty fee is required for any of the authorized uses.
  11  * Modifications to this software may be copyrighted by their authors
  12  * and need not follow the licensing terms described here, provided that
  13  * the new terms are clearly indicated on the first page of each file where
  14  * they apply.
  15  */
  16
  17 #include <stdint.h>
  18 #include <sys/types.h>
  19 #include <sys/time.h>
  20 #include <sys/stat.h>
  21
  22 #define HOSTED_EXIT  0
  23 #define HOSTED_INIT_SIM 1
  24 #define HOSTED_OPEN 2
  25 #define HOSTED_CLOSE 3
  26 #define HOSTED_READ 4
  27 #define HOSTED_WRITE 5
  28 #define HOSTED_LSEEK 6
  29 #define HOSTED_RENAME 7
  30 #define HOSTED_UNLINK 8
  31 #define HOSTED_STAT 9
  32 #define HOSTED_FSTAT 10
  33 #define HOSTED_GETTIMEOFDAY 11
  34 #define HOSTED_ISATTY 12
  35 #define HOSTED_SYSTEM 13
  36
  37 /* This function is provided by the board's BSP, because the precise
  38    mechanism of informing gdb is board specific.  */
  39 extern int __io_hosted (int func, void *args);
  40
  41 /* Protocol specific representation of datatypes, as specified in D.9.11
  42  * of the GDB manual.
  43  * Note that since the m68k is big-endian, we can use native
  44  * representations of integer datatypes in structured datatypes. */
  45
  46 typedef uint32_t gdb_mode_t;
  47 typedef uint32_t gdb_time_t;
  48
  49 struct gdb_stat {
  50   uint32_t    st_dev;     /* device */
  51   uint32_t    st_ino;     /* inode */
  52   gdb_mode_t  st_mode;    /* protection */
  53   uint32_t    st_nlink;   /* number of hard links */
  54   uint32_t    st_uid;     /* user ID of owner */
  55   uint32_t    st_gid;     /* group ID of owner */
  56   uint32_t    st_rdev;    /* device type (if inode device) */
  57   uint64_t    st_size;    /* total size, in bytes */
  58   uint64_t    st_blksize; /* blocksize for filesystem I/O */
  59   uint64_t    st_blocks;  /* number of blocks allocated */
  60   gdb_time_t  st_atim;   /* time of last access */
  61   gdb_time_t  st_mtim;   /* time of last modification */
  62   gdb_time_t  st_ctim;   /* time of last change */
  63 };
  64
  65 struct gdb_timeval {
  66   gdb_time_t tv_sec;  /* second */
  67   uint64_t tv_usec;   /* microsecond */
  68 };
  69
  70
  71 /* Parameters are passed between the library and the debugging stub
  72  * in a fixed-size buffer.
  73  */
  74
  75 typedef uint32_t gdb_parambuf_t[4];
  76
  77 /* open flags */
  78
  79 #define GDB_O_RDONLY   0x0
  80 #define GDB_O_WRONLY   0x1
  81 #define GDB_O_RDWR     0x2
  82 #define GDB_O_APPEND   0x8
  83 #define GDB_O_CREAT  0x200
  84 #define GDB_O_TRUNC  0x400
  85 #define GDB_O_EXCL   0x800
  86
  87 /* mode_t values */
  88
  89 #define GDB_S_IFREG 0100000
  90 #define GDB_S_IFDIR  040000
  91 #define GDB_S_IRUSR    0400
  92 #define GDB_S_IWUSR    0200
  93 #define GDB_S_IXUSR    0100
  94 #define GDB_S_IRGRP     040
  95 #define GDB_S_IWGRP     020
  96 #define GDB_S_IXGRP     010
  97 #define GDB_S_IROTH      04
  98 #define GDB_S_IWOTH      02
  99 #define GDB_S_IXOTH      01
 100
 101 /* errno values */
 102
 103 #define GDB_EPERM         1
 104 #define GDB_ENOENT        2
 105 #define GDB_EINTR         4
 106 #define GDB_EBADF         9
 107 #define GDB_EACCES       13
 108 #define GDB_EFAULT       14
 109 #define GDB_EBUSY        16
 110 #define GDB_EEXIST       17
 111 #define GDB_ENODEV       19
 112 #define GDB_ENOTDIR      20
 113 #define GDB_EISDIR       21
 114 #define GDB_EINVAL       22
 115 #define GDB_ENFILE       23
 116 #define GDB_EMFILE       24
 117 #define GDB_EFBIG        27
 118 #define GDB_ENOSPC       28
 119 #define GDB_ESPIPE       29
 120 #define GDB_EROFS        30
 121 #define GDB_ENAMETOOLONG 91
 122 #define GDB_EUNKNOWN     9999
 123
 124 /* lseek flags */
 125
 126 #define GDB_SEEK_SET 0
 127 #define GDB_SEEK_CUR 1
 128 #define GDB_SEEK_END 2
 129
 130
 131 /* conversion functions */
 132
 133 extern gdb_mode_t __hosted_to_gdb_mode_t (mode_t m);
 134 extern int32_t __hosted_to_gdb_open_flags (int f);
 135 extern int32_t __hosted_to_gdb_lseek_flags (int f);
 136
 137 extern void __hosted_from_gdb_stat (const struct gdb_stat *gs,
 138                                     struct stat *s);
 139 extern void __hosted_from_gdb_timeval (const struct gdb_timeval *gt,
 140                                        struct timeval *t);
 141 extern int __hosted_from_gdb_errno (int32_t err);