/**
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* \file
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* Copyright 2014 Xamarin Inc
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* Licensed under the MIT license. See LICENSE file in the project root for full license information.
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*/
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#ifndef __MONO_METADATA_ABI_DETAILS_H__
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#define __MONO_METADATA_ABI_DETAILS_H__
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#include <config.h>
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#include <glib.h>
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/*
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* This file defines macros to compute sizes/alignments/field offsets which depend on
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* the ABI. It is needed during cross compiling since the generated code needs to
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* contain offsets which correspond to the ABI of the target, not the host.
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* It defines the following macros:
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* - MONO_ABI_SIZEOF(type) for every basic type
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* - MONO_ABI_ALIGNOF(type) for every basic type
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* - MONO_STRUCT_OFFSET(struct, field) for various runtime structures
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* When not cross compiling, these correspond to the host ABI (i.e. sizeof/offsetof).
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* When cross compiling, these are defined in a generated header file which is
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* generated by the offsets tool in tools/offsets-tool. The name of the file
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* is given by the --with-cross-offsets= configure argument.
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*/
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#define MONO_ABI_ALIGNOF(type) MONO_ALIGN_ ## type
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#define MONO_CURRENT_ABI_ALIGNOF_TYPEDEF(type) typedef struct { char c; type x; } Mono_Align_Struct_ ##type;
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#define MONO_CURRENT_ABI_ALIGNOF(type) ((int)G_STRUCT_OFFSET(Mono_Align_Struct_ ##type, x))
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#define MONO_ABI_SIZEOF(type) MONO_SIZEOF_ ## type
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#define MONO_CURRENT_ABI_SIZEOF(type) ((int)sizeof(type))
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#undef DECL_OFFSET
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#undef DECL_OFFSET2
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#define DECL_OFFSET(struct,field) MONO_OFFSET_ ## struct ## _ ## field = -1,
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#define DECL_OFFSET2(struct,field,offset) MONO_OFFSET_ ## struct ## _ ## field = offset,
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#define DECL_ALIGN(type) MONO_ALIGN_ ##type = MONO_CURRENT_ABI_ALIGNOF (type),
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#define DECL_ALIGN2(type,size) MONO_ALIGN_ ##type = size,
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#define DECL_SIZE(type) MONO_SIZEOF_ ##type = MONO_CURRENT_ABI_SIZEOF (type),
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#define DECL_SIZE2(type,size) MONO_SIZEOF_ ##type = size,
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/* Needed by MONO_CURRENT_ABI_ALIGNOF */
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MONO_CURRENT_ABI_ALIGNOF_TYPEDEF(gint8)
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MONO_CURRENT_ABI_ALIGNOF_TYPEDEF(gint16)
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MONO_CURRENT_ABI_ALIGNOF_TYPEDEF(gint32)
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MONO_CURRENT_ABI_ALIGNOF_TYPEDEF(gint64)
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MONO_CURRENT_ABI_ALIGNOF_TYPEDEF(float)
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MONO_CURRENT_ABI_ALIGNOF_TYPEDEF(double)
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MONO_CURRENT_ABI_ALIGNOF_TYPEDEF(gpointer)
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enum {
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#include "object-offsets.h"
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};
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#ifdef USED_CROSS_COMPILER_OFFSETS
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#define MONO_STRUCT_OFFSET(struct,field) MONO_OFFSET_ ## struct ## _ ## field
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#else
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#if defined(HAS_CROSS_COMPILER_OFFSETS) || defined(MONO_CROSS_COMPILE)
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#define MONO_STRUCT_OFFSET(struct,field) (MONO_OFFSET_ ## struct ## _ ## field == -1, G_STRUCT_OFFSET (struct,field))
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#else
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#define MONO_STRUCT_OFFSET(struct,field) G_STRUCT_OFFSET (struct,field)
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#endif
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#endif
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#endif
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