jcs.org
qemu with hax to log dma reads & writes
jcs.org/2018/11/12/vfio
Prepare for handling different BSD mmap() flags
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5809 c046a42c-6fe2-441c-8c8c-71466251a162
+126
-4
+121
bsd-user/bsd-mman.h
+121
bsd-user/bsd-mman.h
···
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/*-
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* Copyright (c) 1982, 1986, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)mman.h 8.2 (Berkeley) 1/9/95
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* $FreeBSD: src/sys/sys/mman.h,v 1.42 2008/03/28 04:29:27 ps Exp $
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*/
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#define TARGET_FREEBSD_MAP_RESERVED0080 0x0080 /* previously misimplemented MAP_INHERIT */
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#define TARGET_FREEBSD_MAP_RESERVED0100 0x0100 /* previously unimplemented MAP_NOEXTEND */
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#define TARGET_FREEBSD_MAP_STACK 0x0400 /* region grows down, like a stack */
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#define TARGET_FREEBSD_MAP_NOSYNC 0x0800 /* page to but do not sync underlying file */
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#define TARGET_FREEBSD_MAP_FLAGMASK 0x1ff7
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/* $NetBSD: mman.h,v 1.42 2008/11/18 22:13:49 ad Exp $ */
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+
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/*-
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* Copyright (c) 1982, 1986, 1993
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+
* The Regents of the University of California. All rights reserved.
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+
*
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+
* Redistribution and use in source and binary forms, with or without
47
+
* modification, are permitted provided that the following conditions
48
+
* are met:
49
+
* 1. Redistributions of source code must retain the above copyright
50
+
* notice, this list of conditions and the following disclaimer.
51
+
* 2. Redistributions in binary form must reproduce the above copyright
52
+
* notice, this list of conditions and the following disclaimer in the
53
+
* documentation and/or other materials provided with the distribution.
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+
* 3. Neither the name of the University nor the names of its contributors
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+
* may be used to endorse or promote products derived from this software
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+
* without specific prior written permission.
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+
*
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+
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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+
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
60
+
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
61
+
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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+
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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+
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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+
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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+
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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+
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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+
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)mman.h 8.2 (Berkeley) 1/9/95
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*/
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#define TARGET_NETBSD_MAP_INHERIT 0x0080 /* region is retained after exec */
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#define TARGET_NETBSD_MAP_TRYFIXED 0x0400 /* attempt hint address, even within break */
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#define TARGET_NETBSD_MAP_WIRED 0x0800 /* mlock() mapping when it is established */
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#define TARGET_NETBSD_MAP_STACK 0x2000 /* allocated from memory, swap space (stack) */
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#define TARGET_NETBSD_MAP_FLAGMASK 0x3ff7
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/* $OpenBSD: mman.h,v 1.18 2003/07/21 22:52:19 tedu Exp $ */
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/* $NetBSD: mman.h,v 1.11 1995/03/26 20:24:23 jtc Exp $ */
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+
83
+
/*-
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+
* Copyright (c) 1982, 1986, 1993
85
+
* The Regents of the University of California. All rights reserved.
86
+
*
87
+
* Redistribution and use in source and binary forms, with or without
88
+
* modification, are permitted provided that the following conditions
89
+
* are met:
90
+
* 1. Redistributions of source code must retain the above copyright
91
+
* notice, this list of conditions and the following disclaimer.
92
+
* 2. Redistributions in binary form must reproduce the above copyright
93
+
* notice, this list of conditions and the following disclaimer in the
94
+
* documentation and/or other materials provided with the distribution.
95
+
* 3. Neither the name of the University nor the names of its contributors
96
+
* may be used to endorse or promote products derived from this software
97
+
* without specific prior written permission.
98
+
*
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+
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
100
+
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
101
+
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
102
+
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
103
+
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
104
+
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
105
+
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
106
+
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
107
+
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
108
+
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
109
+
* SUCH DAMAGE.
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*
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* @(#)mman.h 8.1 (Berkeley) 6/2/93
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*/
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#define TARGET_OPENBSD_MAP_INHERIT 0x0080 /* region is retained after exec */
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#define TARGET_OPENBSD_MAP_NOEXTEND 0x0100 /* for MAP_FILE, don't change file size */
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#define TARGET_OPENBSD_MAP_TRYFIXED 0x0400 /* attempt hint address, even within heap */
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#define TARGET_OPENBSD_MAP_FLAGMASK 0x17f7
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// XXX
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#define TARGET_BSD_MAP_FLAGMASK 0x3ff7
+5
-4
bsd-user/mmap.c
+5
-4
bsd-user/mmap.c
···
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#include "qemu.h"
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#include "qemu-common.h"
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#include "bsd-mman.h"
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//#define DEBUG_MMAP
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···
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if (!(flags & MAP_ANON)) {
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/* msync() won't work here, so we return an error if write is
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possible while it is a shared mapping */
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-
if ((flags & MAP_FLAGMASK) == MAP_SHARED &&
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if ((flags & TARGET_BSD_MAP_FLAGMASK) == MAP_SHARED &&
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(prot & PROT_WRITE))
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return -EINVAL;
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···
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printf("MAP_FIXED ");
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if (flags & MAP_ANON)
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printf("MAP_ANON ");
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-
switch(flags & MAP_FLAGMASK) {
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+
switch(flags & TARGET_BSD_MAP_FLAGMASK) {
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case MAP_PRIVATE:
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printf("MAP_PRIVATE ");
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break;
···
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printf("MAP_SHARED ");
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break;
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default:
334
-
printf("[MAP_FLAGMASK=0x%x] ", flags & MAP_FLAGMASK);
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printf("[MAP_FLAGMASK=0x%x] ", flags & TARGET_BSD_MAP_FLAGMASK);
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break;
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}
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printf("fd=%d offset=" TARGET_FMT_lx "\n", fd, offset);
···
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(offset & ~qemu_host_page_mask) != (start & ~qemu_host_page_mask)) {
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/* msync() won't work here, so we return an error if write is
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possible while it is a shared mapping */
399
-
if ((flags & MAP_FLAGMASK) == MAP_SHARED &&
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if ((flags & TARGET_BSD_MAP_FLAGMASK) == MAP_SHARED &&
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(prot & PROT_WRITE)) {
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errno = EINVAL;
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goto fail;