mirror of
https://github.com/AsahiLinux/u-boot
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80 lines
2 KiB
C
80 lines
2 KiB
C
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/*
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* Copyright 2008 Extreme Engineering Solutions, Inc.
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*
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* mmap/munmap implementation derived from:
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* Clamav Native Windows Port : mmap win32 compatibility layer
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* Copyright (c) 2005-2006 Gianluigi Tiesi <sherpya@netfarm.it>
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* Parts by Kees Zeelenberg <kzlg@users.sourceforge.net> (LibGW32C)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this software; if not, write to the
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "mingw_support.h"
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#include <stdio.h>
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#include <stdint.h>
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#include <errno.h>
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#include <io.h>
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int fsync(int fd)
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{
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return _commit(fd);
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}
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void *mmap(void *addr, size_t len, int prot, int flags, int fd, int offset)
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{
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void *map = NULL;
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HANDLE handle = INVALID_HANDLE_VALUE;
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DWORD cfm_flags = 0, mvf_flags = 0;
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switch (prot) {
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case PROT_READ | PROT_WRITE:
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cfm_flags = PAGE_READWRITE;
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mvf_flags = FILE_MAP_ALL_ACCESS;
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break;
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case PROT_WRITE:
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cfm_flags = PAGE_READWRITE;
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mvf_flags = FILE_MAP_WRITE;
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break;
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case PROT_READ:
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cfm_flags = PAGE_READONLY;
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mvf_flags = FILE_MAP_READ;
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break;
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default:
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return MAP_FAILED;
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}
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handle = CreateFileMappingA((HANDLE) _get_osfhandle(fd), NULL,
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cfm_flags, HIDWORD(len), LODWORD(len), NULL);
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if (!handle)
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return MAP_FAILED;
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map = MapViewOfFile(handle, mvf_flags, HIDWORD(offset),
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LODWORD(offset), len);
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CloseHandle(handle);
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if (!map)
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return MAP_FAILED;
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return map;
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}
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int munmap(void *addr, size_t len)
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{
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if (!UnmapViewOfFile(addr))
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return -1;
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return 0;
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}
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