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82 lines
2.1 KiB
C++
82 lines
2.1 KiB
C++
/*
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* PROJECT: ReactOS Virtual DOS Machine
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* LICENSE: GPL-2.0+ (https://spdx.org/licenses/GPL-2.0+)
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* PURPOSE: Extended ASM macros for GAS and MASM/ML64
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* COPYRIGHT: Copyright 2015-2018 Hermes Belusca-Maito
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*
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* NOTE: This file is an extension to our well-known asm.inc that defines
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* a set of macros allowing us to assemble specially-crafted ASM files
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* with both GAS and MASM/ML.
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*
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* The additions introduced here are:
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* - a 'long' define for MASM/ML that aliases to DWORD, and a 'dword'
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* and 'DWORD' defines for GAS that alias to long.
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* - an OFF(...) macro that is used for initializing global symbols with
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* the offset value of another symbol.
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* - a set of macros for defining and using structures.
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*/
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#ifndef __ASMXTRAS_INC__
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#define __ASMXTRAS_INC__
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/* 'long' / 'dword'|'DWORD' macros for MASM/ML and GAS */
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#ifdef _USE_ML
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#define long dword
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#else
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#define dword long
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#define DWORD long
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#endif
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/* OFFset macro */
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#ifdef _USE_ML
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#define OFF(x) offset x
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#else
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#define OFF(x) x
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#endif
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/*
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* Set of macros for defining and using structures:
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* - STRUCT(name, ...) defines a structure of name 'name'.
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* - FIELD_DECL(field, type, value) adds a new structure member 'field'
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* of type 'type', with the default value 'value'.
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* - ENDS(name) terminates the definition of the structure 'name'.
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* - A symbol 'name' of type 'struct' is declared with VAR_STRUCT(name, struct).
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* - Referencing a member 'field' of a symbol 'name' is done with FIELD(name, field).
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*/
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#ifdef _USE_ML
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#define STRUCT(name, ...) \
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name STRUCT __VA_ARGS__
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#define FIELD_DECL(field, type, value) \
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field type value
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#define ENDS(name) \
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name ENDS
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#define VAR_STRUCT(name, struct) \
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name struct <>
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#define FIELD(name, field) \
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name##.##field
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#else
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#define STRUCT(name, ...) \
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MACRO(name, VarName)
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#define FIELD_DECL(field, type, value) \
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VarName\()_\()field: .type value
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#define ENDS(...) ENDM
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#define VAR_STRUCT(name, struct) \
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name: struct name
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#define FIELD(name, field) \
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name##_##field
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#endif
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#endif /* __ASMXTRAS_INC__ */
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