diff options
Diffstat (limited to 'libgloss/m68k/io-lseek.c')
-rw-r--r-- | libgloss/m68k/io-lseek.c | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/libgloss/m68k/io-lseek.c b/libgloss/m68k/io-lseek.c new file mode 100644 index 000000000..63ec56451 --- /dev/null +++ b/libgloss/m68k/io-lseek.c @@ -0,0 +1,51 @@ +/* + * io-lseek.c -- + * + * 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. + */ + +#include <sys/types.h> +#include <unistd.h> +#include <errno.h> +#define IO lseek +#include "io.h" + +/* + * lseek -- reposition a file descriptor + * input parameters: + * 0 : file descriptor + * 1 : high word of offset + * 2 : low word of offset + * 3 : seek flag + * output parameters: + * 0 : high word of result + * 1 : low word of result + * 2 : errno + */ + +off_t lseek (int fd, off_t offset, int whence) +{ +#if HOSTED + gdb_parambuf_t parameters; + parameters[0] = (uint32_t) fd; + parameters[1] = (uint32_t) ((offset >> 32) & 0xffffffff); + parameters[2] = (uint32_t) (offset & 0xffffffff); + parameters[3] = __hosted_to_gdb_lseek_flags (whence); + __hosted (HOSTED_LSEEK, parameters); + errno = __hosted_from_gdb_errno (parameters[2]); + return ((uint64_t)parameters[0] << 32) | ((uint64_t)parameters[1]); +#else + errno = ENOSYS; + return -1; +#endif +} |