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SEGMENT

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Defines a program segment called name having segment attributes

name SEGMENT [[READONLY]] [[align]] [[combine]] [[use]] [[characteristics]] ALIAS(string) [['class']]
   statements
   name ENDS

Parameters

  • align
    The range of memory addresses from which a starting address for the segment can be selected. The alignment type can be any one of the following:

    Align Type

    Starting Address

    BYTE

    Next available byte address.

    WORD

    Next available word address (2 bytes per word).

    DWORD

    Next available double word address (4 bytes per double word).

    PARA

    Next available paragraph address (16 bytes per paragraph).

    PAGE

    Next available page address (256 bytes per page).

    ALIGN(n)

    Next available nth byte address. See Remarks section for more information.

    If this parameter is not specified, PARA is used by default.

  • combine
    PUBLIC, STACK, COMMON, MEMORY, AT address, PRIVATE

  • use
    USE16, USE32, FLAT

  • characteristics
    INFO, READ, WRITE, EXECUTE, SHARED, NOPAGE, NOCACHE, and DISCARD

    These are supported for COFF only and correspond to the COFF section characteristics of similar name (for example, SHARED corresponds to IMAGE_SCN_MEM_SHARED). READ sets the IMAGE_SCN_MEM_READ flag. The obsolete READONLY flag caused the section to clear the IMG_SCN_MEM_WRITE flag. If any characteristics are set, the default characteristics are not used and only the programmer-specified flags are in effect.

  • ALIAS(string)
    This string is used as the section name in the emitted COFF object. Creates multiple sections with the same external name, with distinct MASM segment names.

    Not supported with /omf.

  • class
    Designates how segments should be combined and ordered in the assembled file. Typical values are, 'DATA', 'CODE', 'CONST' and 'STACK'

Remarks

For ALIGN(n), n may be any power of 2 from 1 to 8192; not supported with /omf.

See Also

Other Resources

Directives Reference