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   2   Copyright 1988-2022 Free Software Foundation, Inc.
   3   This is part of the GCC manual.
   4   For copying conditions, see the copyright.rst file.
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   6 .. _mep-function-attributes:
   7
   8 MeP Function Attributes
   9 ^^^^^^^^^^^^^^^^^^^^^^^
  10
  11 These function attributes are supported by the MeP back end:
  12
  13 .. index:: disinterrupt function attribute, MeP
  14
  15 .. mep-fn-attr:: disinterrupt
  16
  17   On MeP targets, this attribute causes the compiler to emit
  18   instructions to disable interrupts for the duration of the given
  19   function.
  20
  21 .. index:: interrupt function attribute, MeP
  22
  23 .. mep-fn-attr:: interrupt
  24
  25   Use this attribute to indicate
  26   that the specified function is an interrupt handler.  The compiler generates
  27   function entry and exit sequences suitable for use in an interrupt handler
  28   when this attribute is present.
  29
  30 .. index:: near function attribute, MeP
  31
  32 .. mep-fn-attr:: near
  33
  34   This attribute causes the compiler to assume the called
  35   function is close enough to use the normal calling convention,
  36   overriding the :option:`-mtf <MeP -mtf>` command-line option.
  37
  38 .. index:: far function attribute, MeP
  39
  40 .. mep-fn-attr:: far
  41
  42   On MeP targets this causes the compiler to use a calling convention
  43   that assumes the called function is too far away for the built-in
  44   addressing modes.
  45
  46 .. index:: vliw function attribute, MeP
  47
  48 .. mep-fn-attr:: vliw
  49
  50   The :mep-fn-attr:`vliw` attribute tells the compiler to emit
  51   instructions in VLIW mode instead of core mode.  Note that this
  52   attribute is not allowed unless a VLIW coprocessor has been configured
  53   and enabled through command-line options.