{-# LINE 1 "libraries/ghci/GHCi/FFI.hsc" #-}
{-# LANGUAGE CPP, DeriveGeneric, DeriveAnyClass #-}
module GHCi.FFI
( FFIType(..)
, FFIConv(..)
, C_ffi_cif
, prepForeignCall
, freeForeignCallInfo
) where
import Prelude
import Control.Exception
import Data.Binary
import GHC.Generics
import Foreign
import Foreign.C
data FFIType
= FFIVoid
| FFIPointer
| FFIFloat
| FFIDouble
| FFISInt8
| FFISInt16
| FFISInt32
| FFISInt64
| FFIUInt8
| FFIUInt16
| FFIUInt32
| FFIUInt64
deriving (Int -> FFIType -> ShowS
[FFIType] -> ShowS
FFIType -> String
(Int -> FFIType -> ShowS)
-> (FFIType -> String) -> ([FFIType] -> ShowS) -> Show FFIType
forall a.
(Int -> a -> ShowS) -> (a -> String) -> ([a] -> ShowS) -> Show a
showList :: [FFIType] -> ShowS
$cshowList :: [FFIType] -> ShowS
show :: FFIType -> String
$cshow :: FFIType -> String
showsPrec :: Int -> FFIType -> ShowS
$cshowsPrec :: Int -> FFIType -> ShowS
Show, (forall x. FFIType -> Rep FFIType x)
-> (forall x. Rep FFIType x -> FFIType) -> Generic FFIType
forall x. Rep FFIType x -> FFIType
forall x. FFIType -> Rep FFIType x
forall a.
(forall x. a -> Rep a x) -> (forall x. Rep a x -> a) -> Generic a
$cto :: forall x. Rep FFIType x -> FFIType
$cfrom :: forall x. FFIType -> Rep FFIType x
Generic, Get FFIType
[FFIType] -> Put
FFIType -> Put
(FFIType -> Put)
-> Get FFIType -> ([FFIType] -> Put) -> Binary FFIType
forall t. (t -> Put) -> Get t -> ([t] -> Put) -> Binary t
putList :: [FFIType] -> Put
$cputList :: [FFIType] -> Put
get :: Get FFIType
$cget :: Get FFIType
put :: FFIType -> Put
$cput :: FFIType -> Put
Binary)
data FFIConv
= FFICCall
| FFIStdCall
deriving (Int -> FFIConv -> ShowS
[FFIConv] -> ShowS
FFIConv -> String
(Int -> FFIConv -> ShowS)
-> (FFIConv -> String) -> ([FFIConv] -> ShowS) -> Show FFIConv
forall a.
(Int -> a -> ShowS) -> (a -> String) -> ([a] -> ShowS) -> Show a
showList :: [FFIConv] -> ShowS
$cshowList :: [FFIConv] -> ShowS
show :: FFIConv -> String
$cshow :: FFIConv -> String
showsPrec :: Int -> FFIConv -> ShowS
$cshowsPrec :: Int -> FFIConv -> ShowS
Show, (forall x. FFIConv -> Rep FFIConv x)
-> (forall x. Rep FFIConv x -> FFIConv) -> Generic FFIConv
forall x. Rep FFIConv x -> FFIConv
forall x. FFIConv -> Rep FFIConv x
forall a.
(forall x. a -> Rep a x) -> (forall x. Rep a x -> a) -> Generic a
$cto :: forall x. Rep FFIConv x -> FFIConv
$cfrom :: forall x. FFIConv -> Rep FFIConv x
Generic, Get FFIConv
[FFIConv] -> Put
FFIConv -> Put
(FFIConv -> Put)
-> Get FFIConv -> ([FFIConv] -> Put) -> Binary FFIConv
forall t. (t -> Put) -> Get t -> ([t] -> Put) -> Binary t
putList :: [FFIConv] -> Put
$cputList :: [FFIConv] -> Put
get :: Get FFIConv
$cget :: Get FFIConv
put :: FFIConv -> Put
$cput :: FFIConv -> Put
Binary)
prepForeignCall
:: FFIConv
-> [FFIType]
-> FFIType
-> IO (Ptr C_ffi_cif)
prepForeignCall :: FFIConv -> [FFIType] -> FFIType -> IO (Ptr C_ffi_cif)
prepForeignCall FFIConv
cconv [FFIType]
arg_types FFIType
result_type = do
let n_args :: Int
n_args = [FFIType] -> Int
forall (t :: * -> *) a. Foldable t => t a -> Int
length [FFIType]
arg_types
Ptr (Ptr C_ffi_type)
arg_arr <- Int -> IO (Ptr (Ptr C_ffi_type))
forall a. Storable a => Int -> IO (Ptr a)
mallocArray Int
n_args
Ptr (Ptr C_ffi_type) -> [Ptr C_ffi_type] -> IO ()
forall a. Storable a => Ptr a -> [a] -> IO ()
pokeArray Ptr (Ptr C_ffi_type)
arg_arr ((FFIType -> Ptr C_ffi_type) -> [FFIType] -> [Ptr C_ffi_type]
forall a b. (a -> b) -> [a] -> [b]
map FFIType -> Ptr C_ffi_type
ffiType [FFIType]
arg_types)
Ptr C_ffi_cif
cif <- Int -> IO (Ptr C_ffi_cif)
forall a. Int -> IO (Ptr a)
mallocBytes (Int
32)
{-# LINE 59 "libraries/ghci/GHCi/FFI.hsc" #-}
let abi = convToABI cconv
C_ffi_abi
r <- Ptr C_ffi_cif
-> C_ffi_abi
-> CUInt
-> Ptr C_ffi_type
-> Ptr (Ptr C_ffi_type)
-> IO C_ffi_abi
ffi_prep_cif Ptr C_ffi_cif
cif C_ffi_abi
abi (Int -> CUInt
forall a b. (Integral a, Num b) => a -> b
fromIntegral Int
n_args) (FFIType -> Ptr C_ffi_type
ffiType FFIType
result_type) Ptr (Ptr C_ffi_type)
arg_arr
if C_ffi_abi
r C_ffi_abi -> C_ffi_abi -> Bool
forall a. Eq a => a -> a -> Bool
/= C_ffi_abi
fFI_OK then
ErrorCall -> IO (Ptr C_ffi_cif)
forall e a. Exception e => e -> IO a
throwIO (ErrorCall -> IO (Ptr C_ffi_cif))
-> ErrorCall -> IO (Ptr C_ffi_cif)
forall a b. (a -> b) -> a -> b
$ String -> ErrorCall
ErrorCall (String -> ErrorCall) -> String -> ErrorCall
forall a b. (a -> b) -> a -> b
$ [String] -> String
forall (t :: * -> *) a. Foldable t => t [a] -> [a]
concat
[ String
"prepForeignCallFailed: ", C_ffi_abi -> String
strError C_ffi_abi
r,
String
"(cconv: ", FFIConv -> String
forall a. Show a => a -> String
show FFIConv
cconv,
String
" arg tys: ", [FFIType] -> String
forall a. Show a => a -> String
show [FFIType]
arg_types,
String
" res ty: ", FFIType -> String
forall a. Show a => a -> String
show FFIType
result_type, String
")" ]
else
Ptr C_ffi_cif -> IO (Ptr C_ffi_cif)
forall (m :: * -> *) a. Monad m => a -> m a
return (Ptr C_ffi_cif -> Ptr C_ffi_cif
forall a b. Ptr a -> Ptr b
castPtr Ptr C_ffi_cif
cif)
freeForeignCallInfo :: Ptr C_ffi_cif -> IO ()
freeForeignCallInfo :: Ptr C_ffi_cif -> IO ()
freeForeignCallInfo Ptr C_ffi_cif
p = do
Ptr Any -> IO ()
forall a. Ptr a -> IO ()
free (((\Ptr C_ffi_cif
hsc_ptr -> Ptr C_ffi_cif
hsc_ptr Ptr C_ffi_cif -> Int -> Ptr Any
forall a b. Ptr a -> Int -> Ptr b
`plusPtr` Int
8)) Ptr C_ffi_cif
p)
{-# LINE 73 "libraries/ghci/GHCi/FFI.hsc" #-}
free p
strError :: C_ffi_status -> String
strError :: C_ffi_abi -> String
strError C_ffi_abi
r
| C_ffi_abi
r C_ffi_abi -> C_ffi_abi -> Bool
forall a. Eq a => a -> a -> Bool
== C_ffi_abi
fFI_BAD_ABI
= String
"invalid ABI (FFI_BAD_ABI)"
| C_ffi_abi
r C_ffi_abi -> C_ffi_abi -> Bool
forall a. Eq a => a -> a -> Bool
== C_ffi_abi
fFI_BAD_TYPEDEF
= String
"invalid type description (FFI_BAD_TYPEDEF)"
| Bool
otherwise
= String
"unknown error: " String -> ShowS
forall a. [a] -> [a] -> [a]
++ C_ffi_abi -> String
forall a. Show a => a -> String
show C_ffi_abi
r
convToABI :: FFIConv -> C_ffi_abi
convToABI :: FFIConv -> C_ffi_abi
convToABI FFIConv
FFICCall = C_ffi_abi
fFI_DEFAULT_ABI
{-# LINE 89 "libraries/ghci/GHCi/FFI.hsc" #-}
convToABI FFIConv
_ = C_ffi_abi
fFI_DEFAULT_ABI
ffiType :: FFIType -> Ptr C_ffi_type
ffiType :: FFIType -> Ptr C_ffi_type
ffiType FFIType
FFIVoid = Ptr C_ffi_type
ffi_type_void
ffiType FFIType
FFIPointer = Ptr C_ffi_type
ffi_type_pointer
ffiType FFIType
FFIFloat = Ptr C_ffi_type
ffi_type_float
ffiType FFIType
FFIDouble = Ptr C_ffi_type
ffi_type_double
ffiType FFIType
FFISInt8 = Ptr C_ffi_type
ffi_type_sint8
ffiType FFIType
FFISInt16 = Ptr C_ffi_type
ffi_type_sint16
ffiType FFIType
FFISInt32 = Ptr C_ffi_type
ffi_type_sint32
ffiType FFIType
FFISInt64 = Ptr C_ffi_type
ffi_type_sint64
ffiType FFIType
FFIUInt8 = Ptr C_ffi_type
ffi_type_uint8
ffiType FFIType
FFIUInt16 = Ptr C_ffi_type
ffi_type_uint16
ffiType FFIType
FFIUInt32 = Ptr C_ffi_type
ffi_type_uint32
ffiType FFIType
FFIUInt64 = Ptr C_ffi_type
ffi_type_uint64
data C_ffi_type
data C_ffi_cif
type C_ffi_status = (Word32)
{-# LINE 110 "libraries/ghci/GHCi/FFI.hsc" #-}
type C_ffi_abi = (Word32)
{-# LINE 111 "libraries/ghci/GHCi/FFI.hsc" #-}
foreign import ccall "&ffi_type_void" ffi_type_void :: Ptr C_ffi_type
foreign import ccall "&ffi_type_uint8" ffi_type_uint8 :: Ptr C_ffi_type
foreign import ccall "&ffi_type_sint8" ffi_type_sint8 :: Ptr C_ffi_type
foreign import ccall "&ffi_type_uint16" ffi_type_uint16 :: Ptr C_ffi_type
foreign import ccall "&ffi_type_sint16" ffi_type_sint16 :: Ptr C_ffi_type
foreign import ccall "&ffi_type_uint32" ffi_type_uint32 :: Ptr C_ffi_type
foreign import ccall "&ffi_type_sint32" ffi_type_sint32 :: Ptr C_ffi_type
foreign import ccall "&ffi_type_uint64" ffi_type_uint64 :: Ptr C_ffi_type
foreign import ccall "&ffi_type_sint64" ffi_type_sint64 :: Ptr C_ffi_type
foreign import ccall "&ffi_type_float" ffi_type_float :: Ptr C_ffi_type
foreign import ccall "&ffi_type_double" ffi_type_double :: Ptr C_ffi_type
foreign import ccall "&ffi_type_pointer"ffi_type_pointer :: Ptr C_ffi_type
fFI_OK, fFI_BAD_ABI, fFI_BAD_TYPEDEF :: C_ffi_status
fFI_OK :: C_ffi_abi
fFI_OK = (C_ffi_abi
0)
{-# LINE 127 "libraries/ghci/GHCi/FFI.hsc" #-}
fFI_BAD_ABI = (2)
{-# LINE 128 "libraries/ghci/GHCi/FFI.hsc" #-}
fFI_BAD_TYPEDEF = (1)
{-# LINE 129 "libraries/ghci/GHCi/FFI.hsc" #-}
fFI_DEFAULT_ABI :: C_ffi_abi
fFI_DEFAULT_ABI :: C_ffi_abi
fFI_DEFAULT_ABI = (C_ffi_abi
2)
{-# LINE 132 "libraries/ghci/GHCi/FFI.hsc" #-}
{-# LINE 136 "libraries/ghci/GHCi/FFI.hsc" #-}
foreign import ccall "ffi_prep_cif"
ffi_prep_cif :: Ptr C_ffi_cif
-> C_ffi_abi
-> CUInt
-> Ptr C_ffi_type
-> Ptr (Ptr C_ffi_type)
-> IO C_ffi_status