155 lines
4.3 KiB
C
155 lines
4.3 KiB
C
/*
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* hosted & unhosted io support.
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*
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* Copyright (c) 2006 CodeSourcery Inc
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* Copyright (c) 2018 Mentor Graphics
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*
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* The authors hereby grant permission to use, copy, modify, distribute,
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* and license this software and its documentation for any purpose, provided
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* that existing copyright notices are retained in all copies and that this
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* notice is included verbatim in any distributions. No written agreement,
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* license, or royalty fee is required for any of the authorized uses.
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* Modifications to this software may be copyrighted by their authors
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* and need not follow the licensing terms described here, provided that
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* the new terms are clearly indicated on the first page of each file where
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* they apply.
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*/
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#if HOSTED
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#include <stdint.h>
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#include <sys/types.h>
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#include <sys/time.h>
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#include <sys/stat.h>
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#define HOSTED_EXIT 0
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#define HOSTED_INIT_SIM 1
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#define HOSTED_OPEN 2
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#define HOSTED_CLOSE 3
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#define HOSTED_READ 4
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#define HOSTED_WRITE 5
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#define HOSTED_LSEEK 6
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#define HOSTED_RENAME 7
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#define HOSTED_UNLINK 8
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#define HOSTED_STAT 9
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#define HOSTED_FSTAT 10
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#define HOSTED_GETTIMEOFDAY 11
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#define HOSTED_ISATTY 12
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#define HOSTED_SYSTEM 13
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/* This function is provided by the board's BSP, because the precise
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mechanism of informing gdb is board specific. */
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extern void __io_hosted (int func, void *args);
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/* Protocol specific representation of datatypes, as specified in D.9.11
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* of the GDB manual. The values here are stored in big-endian order. */
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typedef uint32_t gdb_mode_t;
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typedef uint32_t gdb_time_t;
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struct gdb_stat {
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uint32_t st_dev; /* device */
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uint32_t st_ino; /* inode */
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gdb_mode_t st_mode; /* protection */
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uint32_t st_nlink; /* number of hard links */
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uint32_t st_uid; /* user ID of owner */
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uint32_t st_gid; /* group ID of owner */
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uint32_t st_rdev; /* device type (if inode device) */
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uint64_t st_size; /* total size, in bytes */
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uint64_t st_blksize; /* blocksize for filesystem I/O */
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uint64_t st_blocks; /* number of blocks allocated */
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gdb_time_t st_atim; /* time of last access */
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gdb_time_t st_mtim; /* time of last modification */
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gdb_time_t st_ctim; /* time of last change */
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};
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struct gdb_timeval {
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gdb_time_t tv_sec; /* second */
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uint64_t tv_usec; /* microsecond */
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};
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/* Parameters are passed between the library and the debugging stub
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* in a fixed-size buffer.
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*/
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typedef uint32_t gdb_parambuf_t[4];
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/* open flags */
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#define GDB_O_RDONLY 0x0
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#define GDB_O_WRONLY 0x1
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#define GDB_O_RDWR 0x2
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#define GDB_O_APPEND 0x8
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#define GDB_O_CREAT 0x200
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#define GDB_O_TRUNC 0x400
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#define GDB_O_EXCL 0x800
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/* mode_t values */
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#define GDB_S_IFREG 0100000
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#define GDB_S_IFDIR 040000
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#define GDB_S_IRUSR 0400
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#define GDB_S_IWUSR 0200
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#define GDB_S_IXUSR 0100
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#define GDB_S_IRGRP 040
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#define GDB_S_IWGRP 020
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#define GDB_S_IXGRP 010
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#define GDB_S_IROTH 04
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#define GDB_S_IWOTH 02
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#define GDB_S_IXOTH 01
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/* errno values */
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#define GDB_EPERM 1
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#define GDB_ENOENT 2
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#define GDB_EINTR 4
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#define GDB_EBADF 9
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#define GDB_EACCES 13
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#define GDB_EFAULT 14
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#define GDB_EBUSY 16
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#define GDB_EEXIST 17
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#define GDB_ENODEV 19
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#define GDB_ENOTDIR 20
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#define GDB_EISDIR 21
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#define GDB_EINVAL 22
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#define GDB_ENFILE 23
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#define GDB_EMFILE 24
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#define GDB_EFBIG 27
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#define GDB_ENOSPC 28
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#define GDB_ESPIPE 29
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#define GDB_EROFS 30
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#define GDB_ENAMETOOLONG 91
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#define GDB_EUNKNOWN 9999
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/* lseek flags */
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#define GDB_SEEK_SET 0
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#define GDB_SEEK_CUR 1
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#define GDB_SEEK_END 2
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/* conversion functions */
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extern gdb_mode_t __hosted_to_gdb_mode_t (mode_t m);
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extern int32_t __hosted_to_gdb_open_flags (int f);
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extern int32_t __hosted_to_gdb_lseek_flags (int f);
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extern void __hosted_from_gdb_stat (const struct gdb_stat *gs,
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struct stat *s);
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extern void __hosted_from_gdb_timeval (const struct gdb_timeval *gt,
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struct timeval *t);
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extern int __hosted_from_gdb_errno (int32_t err);
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#else
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#ifdef IO
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#define IO_NAME_(IO) __hosted_##IO
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#define IO_NAME(IO) IO_NAME_(IO)
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#define IO_STRING_(IO) #IO
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#define IO_STRING(IO) IO_STRING_(IO)
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/* Emit an object that causes a gnu linker warning. */
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static const char IO_NAME (IO) []
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__attribute__ ((section (".gnu.warning"), used)) =
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"IO function '" IO_STRING (IO) "' used";
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#endif
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#endif
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