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, 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 /*--------------------------------------------------------------------*/