clash-prelude-1.5.0: Clash: a functional hardware description language - Prelude library
Copyright(C) 2017-2019 Myrtle Software QBayLogic
LicenseBSD2 (see the file LICENSE)
MaintainerChristiaan Baaij <christiaan.baaij@gmail.com>
Safe HaskellSafe
LanguageHaskell2010
Extensions
  • TemplateHaskellQuotes
  • ScopedTypeVariables
  • BangPatterns
  • ViewPatterns
  • DataKinds
  • InstanceSigs
  • StandaloneDeriving
  • DeriveDataTypeable
  • DeriveFunctor
  • DeriveTraversable
  • DeriveFoldable
  • DeriveGeneric
  • DefaultSignatures
  • DeriveAnyClass
  • DeriveLift
  • DerivingStrategies
  • MagicHash
  • KindSignatures
  • TupleSections
  • TypeOperators
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  • ExplicitForAll
  • LambdaCase
  • BinaryLiterals
  • TypeApplications

Clash.Annotations.Primitive

Description

Instruct the Clash compiler to look for primitive HDL templates provided inline or in a specified directory. For distribution of new packages with primitive HDL templates. Primitive guards can be added to warn on instantiating primitives.

Synopsis

Documentation

dontTranslate :: PrimitiveGuard () Source #

Marks value as not translatable. Clash will error if it finds a blackbox definition for it, or when it is forced to translate it. You can annotate a variable or function f like:

{-# ANN f dontTranslate #-}

hasBlackBox :: PrimitiveGuard () Source #

Marks a value as having a blackbox. Clash will error if it hasn't found a blackbox. You can annotate a variable or function f like:

{-# ANN f hasBlackBox #-}

warnNonSynthesizable :: String -> PrimitiveGuard () Source #

Marks value as non-synthesizable. This will trigger a warning if instantiated in a non-testbench context. You can annotate a variable or function f like:

{-# ANN f (warnNonSynthesizable "Tread carefully, user!") #-}

Implies hasBlackBox.

warnAlways :: String -> PrimitiveGuard () Source #

Always emit warning upon primitive instantiation. You can annotate a variable or function f like:

{-# ANN f (warnAlways "Tread carefully, user!") #-}

Implies hasBlackBox.

data Primitive Source #

The Primitive constructor instructs the clash compiler to look for primitive HDL templates in the indicated directory. InlinePrimitive is equivalent but provides the HDL template inline. They are intended for the distribution of new packages with primitive HDL templates.

Example of Primitive

You have some existing IP written in one of HDLs supported by Clash, and you want to distribute some bindings so that the IP can be easily instantiated from Clash.

You create a package which has a myfancyip.cabal file with the following stanza:

data-files: path/to/MyFancyIP.primitives
cpp-options: -DCABAL

and a MyFancyIP.hs module with the simulation definition and primitive.

module MyFancyIP where

import Clash.Prelude

myFancyIP :: ...
myFancyIP = ...
{-# NOINLINE myFancyIP #-}

The NOINLINE pragma is needed so that GHC will never inline the definition.

Now you need to add the following imports and ANN pragma:

#ifdef CABAL
import           Clash.Annotations.Primitive
import           System.FilePath
import qualified Paths_myfancyip
import           System.IO.Unsafe

{-# ANN module (Primitive [VHDL] (unsafePerformIO Paths_myfancyip.getDataDir </> "path" </> "to")) #-}
#endif

Add more files to the data-files stanza in your .cabal files and more ANN pragma's if you want to add more primitive templates for other HDLs

Example of InlinePrimitive

The following example shows off an inline HDL primitive template. It uses the interpolate package for nicer multiline strings.

{-# LANGUAGE QuasiQuotes #-}
module InlinePrimitive where

import           Clash.Annotations.Primitive
import           Clash.Prelude
import           Data.String.Interpolate      (i)
import           Data.String.Interpolate.Util (unindent)

{-# ANN example (InlinePrimitive [VHDL] $ unindent [i|
  [ { "BlackBox" :
      { "name" : "InlinePrimitive.example"
      , "kind": "Declaration"
      , "template" :
  "-- begin InlinePrimitive example:
  ~GENSYM[example][0] : block
  ~RESULT <= 1 + ~ARG[0];
  end block;
  -- end InlinePrimitive example"
      }
    }
  ]
  |]) #-}
{-# NOINLINE example #-}
example :: Signal System (BitVector 2) -> Signal System (BitVector 2)
example = fmap succ

Constructors

Primitive [HDL] FilePath

Description of a primitive for a given HDLs in a file at FilePath

InlinePrimitive [HDL] String

Description of a primitive for a given HDLs as an inline String

Instances

Instances details
Data Primitive Source # 
Instance details

Defined in Clash.Annotations.Primitive

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> Primitive -> c Primitive #

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c Primitive #

toConstr :: Primitive -> Constr #

dataTypeOf :: Primitive -> DataType #

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c Primitive) #

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c Primitive) #

gmapT :: (forall b. Data b => b -> b) -> Primitive -> Primitive #

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Primitive -> r #

gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Primitive -> r #

gmapQ :: (forall d. Data d => d -> u) -> Primitive -> [u] #

gmapQi :: Int -> (forall d. Data d => d -> u) -> Primitive -> u #

gmapM :: Monad m => (forall d. Data d => d -> m d) -> Primitive -> m Primitive #

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Primitive -> m Primitive #

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Primitive -> m Primitive #

Read Primitive Source # 
Instance details

Defined in Clash.Annotations.Primitive

Show Primitive Source # 
Instance details

Defined in Clash.Annotations.Primitive

Generic Primitive Source # 
Instance details

Defined in Clash.Annotations.Primitive

Associated Types

type Rep Primitive :: Type -> Type #

NFData Primitive Source # 
Instance details

Defined in Clash.Annotations.Primitive

Methods

rnf :: Primitive -> () #

Hashable Primitive Source # 
Instance details

Defined in Clash.Annotations.Primitive

type Rep Primitive Source # 
Instance details

Defined in Clash.Annotations.Primitive

data HDL Source #

A compilation target HDL.

Constructors

SystemVerilog 
Verilog 
VHDL 

Instances

Instances details
Bounded HDL Source # 
Instance details

Defined in Clash.Annotations.Primitive

Methods

minBound :: HDL #

maxBound :: HDL #

Enum HDL Source # 
Instance details

Defined in Clash.Annotations.Primitive

Methods

succ :: HDL -> HDL #

pred :: HDL -> HDL #

toEnum :: Int -> HDL #

fromEnum :: HDL -> Int #

enumFrom :: HDL -> [HDL] #

enumFromThen :: HDL -> HDL -> [HDL] #

enumFromTo :: HDL -> HDL -> [HDL] #

enumFromThenTo :: HDL -> HDL -> HDL -> [HDL] #

Eq HDL Source # 
Instance details

Defined in Clash.Annotations.Primitive

Methods

(==) :: HDL -> HDL -> Bool #

(/=) :: HDL -> HDL -> Bool #

Data HDL Source # 
Instance details

Defined in Clash.Annotations.Primitive

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> HDL -> c HDL #

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c HDL #

toConstr :: HDL -> Constr #

dataTypeOf :: HDL -> DataType #

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c HDL) #

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c HDL) #

gmapT :: (forall b. Data b => b -> b) -> HDL -> HDL #

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> HDL -> r #

gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> HDL -> r #

gmapQ :: (forall d. Data d => d -> u) -> HDL -> [u] #

gmapQi :: Int -> (forall d. Data d => d -> u) -> HDL -> u #

gmapM :: Monad m => (forall d. Data d => d -> m d) -> HDL -> m HDL #

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> HDL -> m HDL #

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> HDL -> m HDL #

Read HDL Source # 
Instance details

Defined in Clash.Annotations.Primitive

Show HDL Source # 
Instance details

Defined in Clash.Annotations.Primitive

Methods

showsPrec :: Int -> HDL -> ShowS #

show :: HDL -> String #

showList :: [HDL] -> ShowS #

Generic HDL Source # 
Instance details

Defined in Clash.Annotations.Primitive

Associated Types

type Rep HDL :: Type -> Type #

Methods

from :: HDL -> Rep HDL x #

to :: Rep HDL x -> HDL #

NFData HDL Source # 
Instance details

Defined in Clash.Annotations.Primitive

Methods

rnf :: HDL -> () #

Hashable HDL Source # 
Instance details

Defined in Clash.Annotations.Primitive

Methods

hashWithSalt :: Int -> HDL -> Int #

hash :: HDL -> Int #

type Rep HDL Source # 
Instance details

Defined in Clash.Annotations.Primitive

type Rep HDL = D1 ('MetaData "HDL" "Clash.Annotations.Primitive" "clash-prelude-1.5.0-inplace" 'False) (C1 ('MetaCons "SystemVerilog" 'PrefixI 'False) (U1 :: Type -> Type) :+: (C1 ('MetaCons "Verilog" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "VHDL" 'PrefixI 'False) (U1 :: Type -> Type)))

data PrimitiveGuard a Source #

Primitive guard to mark a value as either not translatable or as having a blackbox with an optional extra warning. Helps Clash generate better error messages.

For use, see dontTranslate, hasBlackBox, warnNonSynthesizable and warnAlways.

Constructors

DontTranslate

Marks value as not translatable. Clash will error if it finds a blackbox definition for it, or when it is forced to translate it.

HasBlackBox [PrimitiveWarning] a

Marks a value as having a blackbox. Clash will error if it hasn't found a blackbox.

Instances

Instances details
Functor PrimitiveGuard Source # 
Instance details

Defined in Clash.Annotations.Primitive

Methods

fmap :: (a -> b) -> PrimitiveGuard a -> PrimitiveGuard b #

(<$) :: a -> PrimitiveGuard b -> PrimitiveGuard a #

Foldable PrimitiveGuard Source # 
Instance details

Defined in Clash.Annotations.Primitive

Methods

fold :: Monoid m => PrimitiveGuard m -> m #

foldMap :: Monoid m => (a -> m) -> PrimitiveGuard a -> m #

foldMap' :: Monoid m => (a -> m) -> PrimitiveGuard a -> m #

foldr :: (a -> b -> b) -> b -> PrimitiveGuard a -> b #

foldr' :: (a -> b -> b) -> b -> PrimitiveGuard a -> b #

foldl :: (b -> a -> b) -> b -> PrimitiveGuard a -> b #

foldl' :: (b -> a -> b) -> b -> PrimitiveGuard a -> b #

foldr1 :: (a -> a -> a) -> PrimitiveGuard a -> a #

foldl1 :: (a -> a -> a) -> PrimitiveGuard a -> a #

toList :: PrimitiveGuard a -> [a] #

null :: PrimitiveGuard a -> Bool #

length :: PrimitiveGuard a -> Int #

elem :: Eq a => a -> PrimitiveGuard a -> Bool #

maximum :: Ord a => PrimitiveGuard a -> a #

minimum :: Ord a => PrimitiveGuard a -> a #

sum :: Num a => PrimitiveGuard a -> a #

product :: Num a => PrimitiveGuard a -> a #

Traversable PrimitiveGuard Source # 
Instance details

Defined in Clash.Annotations.Primitive

Methods

traverse :: Applicative f => (a -> f b) -> PrimitiveGuard a -> f (PrimitiveGuard b) #

sequenceA :: Applicative f => PrimitiveGuard (f a) -> f (PrimitiveGuard a) #

mapM :: Monad m => (a -> m b) -> PrimitiveGuard a -> m (PrimitiveGuard b) #

sequence :: Monad m => PrimitiveGuard (m a) -> m (PrimitiveGuard a) #

Data a => Data (PrimitiveGuard a) Source # 
Instance details

Defined in Clash.Annotations.Primitive

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> PrimitiveGuard a -> c (PrimitiveGuard a) #

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c (PrimitiveGuard a) #

toConstr :: PrimitiveGuard a -> Constr #

dataTypeOf :: PrimitiveGuard a -> DataType #

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c (PrimitiveGuard a)) #

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c (PrimitiveGuard a)) #

gmapT :: (forall b. Data b => b -> b) -> PrimitiveGuard a -> PrimitiveGuard a #

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> PrimitiveGuard a -> r #

gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> PrimitiveGuard a -> r #

gmapQ :: (forall d. Data d => d -> u) -> PrimitiveGuard a -> [u] #

gmapQi :: Int -> (forall d. Data d => d -> u) -> PrimitiveGuard a -> u #

gmapM :: Monad m => (forall d. Data d => d -> m d) -> PrimitiveGuard a -> m (PrimitiveGuard a) #

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> PrimitiveGuard a -> m (PrimitiveGuard a) #

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> PrimitiveGuard a -> m (PrimitiveGuard a) #

Read a => Read (PrimitiveGuard a) Source # 
Instance details

Defined in Clash.Annotations.Primitive

Show a => Show (PrimitiveGuard a) Source # 
Instance details

Defined in Clash.Annotations.Primitive

Generic (PrimitiveGuard a) Source # 
Instance details

Defined in Clash.Annotations.Primitive

Associated Types

type Rep (PrimitiveGuard a) :: Type -> Type #

Binary a => Binary (PrimitiveGuard a) Source # 
Instance details

Defined in Clash.Annotations.Primitive

NFData a => NFData (PrimitiveGuard a) Source # 
Instance details

Defined in Clash.Annotations.Primitive

Methods

rnf :: PrimitiveGuard a -> () #

Hashable a => Hashable (PrimitiveGuard a) Source # 
Instance details

Defined in Clash.Annotations.Primitive

type Rep (PrimitiveGuard a) Source # 
Instance details

Defined in Clash.Annotations.Primitive

type Rep (PrimitiveGuard a) = D1 ('MetaData "PrimitiveGuard" "Clash.Annotations.Primitive" "clash-prelude-1.5.0-inplace" 'False) (C1 ('MetaCons "DontTranslate" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "HasBlackBox" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 [PrimitiveWarning]) :*: S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 a)))

data PrimitiveWarning Source #

Warning that will be emitted on instantiating a guarded value.

Constructors

WarnNonSynthesizable String

Marks value as non-synthesizable. This will trigger a warning if instantiated in a non-testbench context.

WarnAlways String

Always emit warning upon primitive instantiation.

Instances

Instances details
Data PrimitiveWarning Source # 
Instance details

Defined in Clash.Annotations.Primitive

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> PrimitiveWarning -> c PrimitiveWarning #

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c PrimitiveWarning #

toConstr :: PrimitiveWarning -> Constr #

dataTypeOf :: PrimitiveWarning -> DataType #

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c PrimitiveWarning) #

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c PrimitiveWarning) #

gmapT :: (forall b. Data b => b -> b) -> PrimitiveWarning -> PrimitiveWarning #

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> PrimitiveWarning -> r #

gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> PrimitiveWarning -> r #

gmapQ :: (forall d. Data d => d -> u) -> PrimitiveWarning -> [u] #

gmapQi :: Int -> (forall d. Data d => d -> u) -> PrimitiveWarning -> u #

gmapM :: Monad m => (forall d. Data d => d -> m d) -> PrimitiveWarning -> m PrimitiveWarning #

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> PrimitiveWarning -> m PrimitiveWarning #

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> PrimitiveWarning -> m PrimitiveWarning #

Read PrimitiveWarning Source # 
Instance details

Defined in Clash.Annotations.Primitive

Show PrimitiveWarning Source # 
Instance details

Defined in Clash.Annotations.Primitive

Generic PrimitiveWarning Source # 
Instance details

Defined in Clash.Annotations.Primitive

Associated Types

type Rep PrimitiveWarning :: Type -> Type #

Binary PrimitiveWarning Source # 
Instance details

Defined in Clash.Annotations.Primitive

NFData PrimitiveWarning Source # 
Instance details

Defined in Clash.Annotations.Primitive

Methods

rnf :: PrimitiveWarning -> () #

Hashable PrimitiveWarning Source # 
Instance details

Defined in Clash.Annotations.Primitive

type Rep PrimitiveWarning Source # 
Instance details

Defined in Clash.Annotations.Primitive

type Rep PrimitiveWarning = D1 ('MetaData "PrimitiveWarning" "Clash.Annotations.Primitive" "clash-prelude-1.5.0-inplace" 'False) (C1 ('MetaCons "WarnNonSynthesizable" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 String)) :+: C1 ('MetaCons "WarnAlways" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 String)))

extractPrim :: PrimitiveGuard a -> Maybe a Source #

Extract primitive definition from a PrimitiveGuard. Will yield Nothing for guards of value DontTranslate.

extractWarnings :: PrimitiveGuard a -> [PrimitiveWarning] Source #

Extract primitive warnings from a PrimitiveGuard. Will yield an empty list for guards of value DontTranslate.