coregrind/m_mach/mach_basics.c

   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, see <http://www.gnu.org/licenses/>.
  25
  26    The GNU General Public License is contained in the file COPYING.
  27 */
  28
  29 #if defined(VGO_darwin)
  30
  31 #include "pub_core_basics.h"
  32 #include "pub_core_mach.h"
  33
  34 #include <mach/mach.h>
  35 #include <mach/machine/ndr_def.h>
  36
  37 /* From mach_traps-<arch>-darwin.S */
  38 //extern mach_port_name_t host_self_trap(void);
  39 extern mach_port_name_t thread_self_trap(void);
  40 extern mach_port_t mach_reply_port(void);
  41
  42 /* Global variables set in mach_init() */
  43 vm_size_t vm_page_size = 0;
  44 mach_port_name_t mach_task_self_ = 0;
  45
  46
  47 mach_port_name_t mach_thread_self(void)
  48 {
  49     return thread_self_trap();
  50 }
  51
  52 static mach_port_t reply = 0;
  53
  54 mach_port_t mig_get_reply_port(void)
  55 {
  56     if (!reply) reply = mach_reply_port();
  57     return reply;
  58     // GrP fixme is just one enough for valgrind's own use?
  59     // might work if valgrind never blocks in mig calls on
  60     // its own behalf, and doesn't call mig outside the semaphore
  61 }
  62
  63
  64 void mig_dealloc_reply_port(mach_port_t reply_port)
  65 {
  66 }
  67
  68
  69 void mig_put_reply_port(mach_port_t reply_port)
  70 {
  71 }
  72
  73
  74 /* Initialize Mach global data.
  75    Should be called early in main(). */
  76 void VG_(mach_init)(void)
  77 {
  78     reply = 0;
  79     mach_task_self_ = task_self_trap();
  80
  81     // GrP fixme host_page_size(host_self_trap(), &vm_page_size);
  82     vm_page_size = 4096;
  83 }
  84
  85 #endif // defined(VGO_darwin)
  86
  87 /*--------------------------------------------------------------------*/
  88 /*--- end                                                          ---*/
  89 /*--------------------------------------------------------------------*/