mono/utils/mono-machine.h

   1 /**
   2  * \file
   3  * machine definitions
   4  *
   5  * Authors:
   6  *      Rodrigo Kumpera (kumpera@gmail.com)
   7  *
   8  * Copyright (c) 2011 Novell, Inc (http://www.novell.com)
   9  * Licensed under the MIT license. See LICENSE file in the project root for full license information.
  10  */
  11
  12 #ifndef __MONO_MONO_MACHINE_H__
  13 #define __MONO_MONO_MACHINE_H__
  14
  15 /* C type matching the size of a machine register. Not always the same as 'int' */
  16 /* Note that member 'p' of MonoInst must be the same type, as OP_PCONST is defined
  17  * as one of the OP_ICONST types, so inst_c0 must be the same as inst_p0
  18  */
  19
  20 #include "config.h"
  21 #include <glib.h>
  22
  23 // __ILP32__ means integer, long, and pointers are 32bits, and nothing about registers.
  24 // MONO_ARCH_ILP32 means integer, long, and pointers are 32bits, and 64bit registers.
  25 // This is for example x32, arm6432, mipsn32, Alpha/NT.
  26 #ifdef MONO_ARCH_ILP32
  27 typedef gint64 host_mgreg_t;
  28 typedef guint64 host_umgreg_t;
  29 #else
  30 typedef gssize host_mgreg_t;
  31 typedef gsize host_umgreg_t;
  32 #endif
  33
  34 // SIZEOF_REGISTER is target. mgreg_t is usually target, sometimes host.
  35 // There is a mismatch in cross (AOT) compilers, and the
  36 // never executed JIT and runtime truncate pointers.
  37 // When casting to/from pointers, use gsize or gssize.
  38 // When dealing with register context, use host_mgreg_t.
  39 // Or ifndef MONO_CROSS_COMPILE out runtime code.
  40 #if SIZEOF_REGISTER == 4
  41 //typedef gint32 mgreg_t;
  42 #elif SIZEOF_REGISTER == 8
  43 //typedef gint64 mgreg_t;
  44 #endif
  45
  46 #if TARGET_SIZEOF_VOID_P == 4
  47 typedef gint32 target_mgreg_t;
  48 #else
  49 typedef gint64 target_mgreg_t;
  50 #endif
  51
  52 /* Alignment for MonoArray.vector */
  53 #if defined(_AIX)
  54 /*
  55  * HACK: doubles in structs always align to 4 on AIX... even on 64-bit,
  56  * which is bad for aligned usage like what System.Array.FastCopy does
  57  */
  58 typedef guint64 mono_64bitaligned_t;
  59 #else
  60 typedef double mono_64bitaligned_t;
  61 #endif
  62
  63 #endif /* __MONO_MONO_MACHINE_H__ */