1 
2 /*--------------------------------------------------------------------*/
3 /*--- Basic Mach interface functions                 mach_basics.c ---*/
4 /*--------------------------------------------------------------------*/
5 
6 /*
7    This file is part of Valgrind, a dynamic binary instrumentation
8    framework.
9 
10    Copyright (C) 2005-2017 Apple Inc.
11       Greg Parker  gparker@apple.com
12 
13    This program is free software; you can redistribute it and/or
14    modify it under the terms of the GNU General Public License as
15    published by the Free Software Foundation; either version 2 of the
16    License, or (at your option) any later version.
17 
18    This program is distributed in the hope that it will be useful, but
19    WITHOUT ANY WARRANTY; without even the implied warranty of
20    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
21    General Public License for more details.
22 
23    You should have received a copy of the GNU General Public License
24    along with this program; if not, write to the Free Software
25    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
26    02111-1307, USA.
27 
28    The GNU General Public License is contained in the file COPYING.
29 */
30 
31 #if defined(VGO_darwin)
32 
33 #include "pub_core_basics.h"
34 #include "pub_core_mach.h"
35 
36 #include <mach/mach.h>
37 #include <mach/machine/ndr_def.h>
38 
39 /* From mach_traps-<arch>-darwin.S */
40 //extern mach_port_name_t host_self_trap(void);
41 extern mach_port_name_t thread_self_trap(void);
42 extern mach_port_t mach_reply_port(void);
43 
44 /* Global variables set in mach_init() */
45 vm_size_t vm_page_size = 0;
46 mach_port_name_t mach_task_self_ = 0;
47 
48 
49 mach_port_name_t mach_thread_self(void)
50 {
51     return thread_self_trap();
52 }
53 
54 static mach_port_t reply = 0;
55 
56 mach_port_t mig_get_reply_port(void)
57 {
58     if (!reply) reply = mach_reply_port();
59     return reply;
60     // GrP fixme is just one enough for valgrind's own use?
61     // might work if valgrind never blocks in mig calls on
62     // its own behalf, and doesn't call mig outside the semaphore
63 }
64 
65 
66 void mig_dealloc_reply_port(mach_port_t reply_port)
67 {
68 }
69 
70 
71 void mig_put_reply_port(mach_port_t reply_port)
72 {
73 }
74 
75 
76 /* Initialize Mach global data.
77    Should be called early in main(). */
78 void VG_(mach_init)(void)
79 {
80     reply = 0;
81     mach_task_self_ = task_self_trap();
82 
83     // GrP fixme host_page_size(host_self_trap(), &vm_page_size);
84     vm_page_size = 4096;
85 }
86 
87 #endif // defined(VGO_darwin)
88 
89 /*--------------------------------------------------------------------*/
90 /*--- end                                                          ---*/
91 /*--------------------------------------------------------------------*/
92