1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
|
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is XPCOM utility functions for Mac OS X
*
* The Initial Developer of the Original Code is Google Inc.
* Portions created by the Initial Developer are Copyright (C) 2006
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Mark Mentovai <mark@moxienet.com> (Original Author)
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "nsMacUtilsImpl.h"
#include <CoreFoundation/CoreFoundation.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/sysctl.h>
#include <mach-o/fat.h>
NS_IMPL_ISUPPORTS1(nsMacUtilsImpl, nsIMacUtils)
/* readonly attribute boolean isUniversalBinary; */
// True when the main executable is a fat file supporting at least
// ppc and x86 (universal binary).
NS_IMETHODIMP nsMacUtilsImpl::GetIsUniversalBinary(PRBool *aIsUniversalBinary)
{
static PRBool sInitialized = PR_FALSE,
sIsUniversalBinary = PR_FALSE;
if (sInitialized) {
*aIsUniversalBinary = sIsUniversalBinary;
return NS_OK;
}
PRBool foundPPC = PR_FALSE,
foundX86 = PR_FALSE;
CFURLRef executableURL = nsnull;
int fd = -1;
CFBundleRef mainBundle;
if (!(mainBundle = ::CFBundleGetMainBundle()))
goto done;
if (!(executableURL = ::CFBundleCopyExecutableURL(mainBundle)))
goto done;
char executablePath[PATH_MAX];
if (!::CFURLGetFileSystemRepresentation(executableURL, PR_TRUE,
(UInt8*) executablePath,
sizeof(executablePath)))
goto done;
if ((fd = open(executablePath, O_RDONLY)) == -1)
goto done;
struct fat_header fatHeader;
if (read(fd, &fatHeader, sizeof(fatHeader)) != sizeof(fatHeader))
goto done;
// The fat header is always stored on disk as big-endian.
fatHeader.magic = CFSwapInt32BigToHost(fatHeader.magic);
fatHeader.nfat_arch = CFSwapInt32BigToHost(fatHeader.nfat_arch);
// Main executable is thin.
if (fatHeader.magic != FAT_MAGIC)
goto done;
// Loop over each architecture in the file. We're presently only
// interested in 32-bit PPC and x86.
for (PRUint32 i = 0 ; i < fatHeader.nfat_arch ; i++) {
struct fat_arch fatArch;
if (read(fd, &fatArch, sizeof(fatArch)) != sizeof(fatArch))
goto done;
// This is still part of the fat header, so byte-swap as needed.
fatArch.cputype = CFSwapInt32BigToHost(fatArch.cputype);
// Don't mask out the ABI bits. This allows identification of ppc64
// as distinct from ppc. CPU_TYPE_X86 is preferred to CPU_TYPE_I386
// but does not exist prior to the 10.4 headers.
if (fatArch.cputype == CPU_TYPE_POWERPC)
foundPPC = PR_TRUE;
else if (fatArch.cputype == CPU_TYPE_I386)
foundX86 = PR_TRUE;
}
if (foundPPC && foundX86)
sIsUniversalBinary = PR_TRUE;
done:
if (fd != -1)
close(fd);
if (executableURL)
::CFRelease(executableURL);
*aIsUniversalBinary = sIsUniversalBinary;
sInitialized = PR_TRUE;
return NS_OK;
}
/* readonly attribute boolean isTranslated; */
// True when running under binary translation (Rosetta).
NS_IMETHODIMP nsMacUtilsImpl::GetIsTranslated(PRBool *aIsTranslated)
{
#ifdef __ppc__
static PRBool sInitialized = PR_FALSE;
// Initialize sIsNative to 1. If the sysctl fails because it doesn't
// exist, then translation is not possible, so the process must not be
// running translated.
static PRInt32 sIsNative = 1;
if (!sInitialized) {
size_t sz = sizeof(sIsNative);
sysctlbyname("sysctl.proc_native", &sIsNative, &sz, NULL, 0);
sInitialized = PR_TRUE;
}
*aIsTranslated = !sIsNative;
#else
// Translation only exists for ppc code. Other architectures aren't
// translated.
*aIsTranslated = PR_FALSE;
#endif
return NS_OK;
}
|
