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https://opencores.org/ocsvn/openrisc_2011-10-31/openrisc_2011-10-31/trunk
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[/] [openrisc/] [trunk/] [gnu-src/] [newlib-1.17.0/] [libgloss/] [m68k/] [io-lseek.c] - Rev 158
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/* * 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 }