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[/] [openrisc/] [trunk/] [gnu-src/] [newlib-1.18.0/] [libgloss/] [m68k/] [io-lseek.c] - Blame information for rev 258

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Line No. Rev Author Line
1 207 jeremybenn
/*
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 * io-lseek.c --
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 *
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 * Copyright (c) 2006 CodeSourcery Inc
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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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#include <sys/types.h>
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#include <unistd.h>
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#include <errno.h>
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#define IO lseek
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#include "io.h"
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/*
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 * lseek -- reposition a file descriptor
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 * input parameters:
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 *   0 : file descriptor
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 *   1 : high word of offset
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 *   2 : low word of offset
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 *   3 : seek flag
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 * output parameters:
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 *   0 : high word of result
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 *   1 : low word of result
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 *   2 : errno
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 */
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off_t lseek (int fd, off_t offset, int whence)
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{
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#if HOSTED
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  gdb_parambuf_t parameters;
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  parameters[0] = (uint32_t) fd;
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  parameters[1] = (uint32_t) ((offset >> 32) & 0xffffffff);
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  parameters[2] = (uint32_t) (offset & 0xffffffff);
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  parameters[3] = __hosted_to_gdb_lseek_flags (whence);
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  __hosted (HOSTED_LSEEK, parameters);
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  errno = __hosted_from_gdb_errno (parameters[2]);
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  return ((uint64_t)parameters[0] << 32) | ((uint64_t)parameters[1]);
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#else
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  errno = ENOSYS;
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  return -1;
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#endif
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}

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