[Qemu-devel] [5809] Prepare for handling different BSD mmap() flags

[Blue Swirl]

Revision: 5809
          http://svn.sv.gnu.org/viewvc/?view=rev&root=qemu&revision=5809
Author:   blueswir1
Date:     2008-11-29 14:05:16 +0000 (Sat, 29 Nov 2008)

Log Message:
-----------
Prepare for handling different BSD mmap() flags

Modified Paths:
--------------
    trunk/bsd-user/mmap.c

Added Paths:
-----------
    trunk/bsd-user/bsd-mman.h

Added: trunk/bsd-user/bsd-mman.h
===================================================================
--- trunk/bsd-user/bsd-mman.h                           (rev 0)
+++ trunk/bsd-user/bsd-mman.h   2008-11-29 14:05:16 UTC (rev 5809)
@@ -0,0 +1,121 @@
+/*-
+ * Copyright (c) 1982, 1986, 1993
+ *      The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *      @(#)mman.h      8.2 (Berkeley) 1/9/95
+ * $FreeBSD: src/sys/sys/mman.h,v 1.42 2008/03/28 04:29:27 ps Exp $
+ */
+
+#define TARGET_FREEBSD_MAP_RESERVED0080 0x0080  /* previously misimplemented 
MAP_INHERIT */
+#define TARGET_FREEBSD_MAP_RESERVED0100 0x0100  /* previously unimplemented 
MAP_NOEXTEND */
+#define TARGET_FREEBSD_MAP_STACK        0x0400  /* region grows down, like a 
stack */
+#define TARGET_FREEBSD_MAP_NOSYNC       0x0800  /* page to but do not sync 
underlying file */
+
+#define TARGET_FREEBSD_MAP_FLAGMASK     0x1ff7
+
+/*      $NetBSD: mman.h,v 1.42 2008/11/18 22:13:49 ad Exp $     */
+
+/*-
+ * Copyright (c) 1982, 1986, 1993
+ *      The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *      @(#)mman.h      8.2 (Berkeley) 1/9/95
+ */
+#define TARGET_NETBSD_MAP_INHERIT       0x0080  /* region is retained after 
exec */
+#define TARGET_NETBSD_MAP_TRYFIXED      0x0400 /* attempt hint address, even 
within break */
+#define TARGET_NETBSD_MAP_WIRED         0x0800  /* mlock() mapping when it is 
established */
+
+#define TARGET_NETBSD_MAP_STACK         0x2000  /* allocated from memory, swap 
space (stack) */
+
+#define TARGET_NETBSD_MAP_FLAGMASK      0x3ff7
+
+/*      $OpenBSD: mman.h,v 1.18 2003/07/21 22:52:19 tedu Exp $  */
+/*      $NetBSD: mman.h,v 1.11 1995/03/26 20:24:23 jtc Exp $    */
+
+/*-
+ * Copyright (c) 1982, 1986, 1993
+ *      The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *      @(#)mman.h      8.1 (Berkeley) 6/2/93
+ */
+
+#define TARGET_OPENBSD_MAP_INHERIT      0x0080  /* region is retained after 
exec */
+#define TARGET_OPENBSD_MAP_NOEXTEND     0x0100  /* for MAP_FILE, don't change 
file size */
+#define TARGET_OPENBSD_MAP_TRYFIXED     0x0400  /* attempt hint address, even 
within heap */
+
+#define TARGET_OPENBSD_MAP_FLAGMASK     0x17f7
+
+// XXX
+#define TARGET_BSD_MAP_FLAGMASK         0x3ff7

Modified: trunk/bsd-user/mmap.c
===================================================================
--- trunk/bsd-user/mmap.c       2008-11-29 13:33:23 UTC (rev 5808)
+++ trunk/bsd-user/mmap.c       2008-11-29 14:05:16 UTC (rev 5809)
@@ -27,6 +27,7 @@
 
 #include "qemu.h"
 #include "qemu-common.h"
+#include "bsd-mman.h"
 
 //#define DEBUG_MMAP
 
@@ -223,7 +224,7 @@
     if (!(flags & MAP_ANON)) {
         /* msync() won't work here, so we return an error if write is
            possible while it is a shared mapping */
-        if ((flags & MAP_FLAGMASK) == MAP_SHARED &&
+        if ((flags & TARGET_BSD_MAP_FLAGMASK) == MAP_SHARED &&
             (prot & PROT_WRITE))
             return -EINVAL;
 
@@ -323,7 +324,7 @@
             printf("MAP_FIXED ");
         if (flags & MAP_ANON)
             printf("MAP_ANON ");
-        switch(flags & MAP_FLAGMASK) {
+        switch(flags & TARGET_BSD_MAP_FLAGMASK) {
         case MAP_PRIVATE:
             printf("MAP_PRIVATE ");
             break;
@@ -331,7 +332,7 @@
             printf("MAP_SHARED ");
             break;
         default:
-            printf("[MAP_FLAGMASK=0x%x] ", flags & MAP_FLAGMASK);
+            printf("[MAP_FLAGMASK=0x%x] ", flags & TARGET_BSD_MAP_FLAGMASK);
             break;
         }
         printf("fd=%d offset=" TARGET_FMT_lx "\n", fd, offset);
@@ -396,7 +397,7 @@
             (offset & ~qemu_host_page_mask) != (start & ~qemu_host_page_mask)) 
{
             /* msync() won't work here, so we return an error if write is
                possible while it is a shared mapping */
-            if ((flags & MAP_FLAGMASK) == MAP_SHARED &&
+            if ((flags & TARGET_BSD_MAP_FLAGMASK) == MAP_SHARED &&
                 (prot & PROT_WRITE)) {
                 errno = EINVAL;
                 goto fail;