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Commit 23aee511 authored by Austin Seipp's avatar Austin Seipp
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ghci: detabify/unwhitespace ByteCodeInstr 


Signed-off-by: default avatarAustin Seipp <austin@well-typed.com>
parent bd4e8551
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compiler/ghci/ByteCodeInstr.lhs
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......@@ -5,23 +5,15 @@ ByteCodeInstrs: Bytecode instruction definitions
\begin{code}
{-# LANGUAGE CPP, MagicHash #-}
{-# OPTIONS_GHC -fno-warn-tabs #-}
-- The above warning supression flag is a temporary kludge.
-- While working on this module you are encouraged to remove it and
-- detab the module (please do the detabbing in a separate patch). See
-- http://ghc.haskell.org/trac/ghc/wiki/Commentary/CodingStyle#TabsvsSpaces
-- for details
{-# OPTIONS_GHC -funbox-strict-fields #-}
module ByteCodeInstr (
BCInstr(..), ProtoBCO(..), bciStackUse, BreakInfo (..)
module ByteCodeInstr (
BCInstr(..), ProtoBCO(..), bciStackUse, BreakInfo (..)
) where
#include "HsVersions.h"
#include "../includes/MachDeps.h"
import ByteCodeItbls ( ItblPtr )
import ByteCodeItbls ( ItblPtr )
import StgCmmLayout ( ArgRep(..) )
import PprCore
......@@ -44,17 +36,17 @@ import Data.Word
-- ----------------------------------------------------------------------------
-- Bytecode instructions
data ProtoBCO a
= ProtoBCO {
protoBCOName :: a, -- name, in some sense
protoBCOInstrs :: [BCInstr], -- instrs
-- arity and GC info
protoBCOBitmap :: [StgWord],
protoBCOBitmapSize :: Word16,
protoBCOArity :: Int,
-- what the BCO came from
protoBCOExpr :: Either [AnnAlt Id VarSet] (AnnExpr Id VarSet),
-- malloc'd pointers
data ProtoBCO a
= ProtoBCO {
protoBCOName :: a, -- name, in some sense
protoBCOInstrs :: [BCInstr], -- instrs
-- arity and GC info
protoBCOBitmap :: [StgWord],
protoBCOBitmapSize :: Word16,
protoBCOArity :: Int,
-- what the BCO came from
protoBCOExpr :: Either [AnnAlt Id VarSet] (AnnExpr Id VarSet),
-- malloc'd pointers
protoBCOPtrs :: [Either ItblPtr (Ptr ())]
}
......@@ -80,14 +72,14 @@ data BCInstr
-- Pushing literals
| PUSH_UBX (Either Literal (Ptr ())) Word16
-- push this int/float/double/addr, on the stack. Word16
-- is # of words to copy from literal pool. Eitherness reflects
-- the difficulty of dealing with MachAddr here, mostly due to
-- the excessive (and unnecessary) restrictions imposed by the
-- designers of the new Foreign library. In particular it is
-- quite impossible to convert an Addr to any other integral
-- type, and it appears impossible to get hold of the bits of
-- an addr, even though we need to assemble BCOs.
-- push this int/float/double/addr, on the stack. Word16
-- is # of words to copy from literal pool. Eitherness reflects
-- the difficulty of dealing with MachAddr here, mostly due to
-- the excessive (and unnecessary) restrictions imposed by the
-- designers of the new Foreign library. In particular it is
-- quite impossible to convert an Addr to any other integral
-- type, and it appears impossible to get hold of the bits of
-- an addr, even though we need to assemble BCOs.
-- various kinds of application
| PUSH_APPLY_N
......@@ -112,8 +104,8 @@ data BCInstr
| MKPAP !Word16{-ptr to PAP is this far down stack-} !Word16{-number of words-}
| UNPACK !Word16 -- unpack N words from t.o.s Constr
| PACK DataCon !Word16
-- after assembly, the DataCon is an index into the
-- itbl array
-- after assembly, the DataCon is an index into the
-- itbl array
-- For doing case trees
| LABEL LocalLabel
| TESTLT_I Int LocalLabel
......@@ -147,13 +139,13 @@ data BCInstr
-- To Infinity And Beyond
| ENTER
| RETURN -- return a lifted value
| RETURN -- return a lifted value
| RETURN_UBX ArgRep -- return an unlifted value, here's its rep
-- Breakpoints
-- Breakpoints
| BRK_FUN (MutableByteArray# RealWorld) Word16 BreakInfo
data BreakInfo
data BreakInfo
= BreakInfo
{ breakInfo_module :: Module
, breakInfo_number :: {-# UNPACK #-} !Int
......@@ -173,8 +165,8 @@ instance Outputable BreakInfo where
instance Outputable a => Outputable (ProtoBCO a) where
ppr (ProtoBCO name instrs bitmap bsize arity origin malloced)
= (text "ProtoBCO" <+> ppr name <> char '#' <> int arity
<+> text (show malloced) <> colon)
= (text "ProtoBCO" <+> ppr name <> char '#' <> int arity
<+> text (show malloced) <> colon)
$$ nest 3 (case origin of
Left alts -> vcat (zipWith (<+>) (char '{' : repeat (char ';'))
(map (pprCoreAltShort.deAnnAlt) alts)) <+> char '}'
......@@ -212,8 +204,8 @@ instance Outputable BCInstr where
ppr (PUSH_L offset) = text "PUSH_L " <+> ppr offset
ppr (PUSH_LL o1 o2) = text "PUSH_LL " <+> ppr o1 <+> ppr o2
ppr (PUSH_LLL o1 o2 o3) = text "PUSH_LLL" <+> ppr o1 <+> ppr o2 <+> ppr o3
ppr (PUSH_G nm) = text "PUSH_G " <+> ppr nm
ppr (PUSH_PRIMOP op) = text "PUSH_G " <+> text "GHC.PrimopWrappers."
ppr (PUSH_G nm) = text "PUSH_G " <+> ppr nm
ppr (PUSH_PRIMOP op) = text "PUSH_G " <+> text "GHC.PrimopWrappers."
<> ppr op
ppr (PUSH_BCO bco) = hang (text "PUSH_BCO") 2 (ppr bco)
ppr (PUSH_ALTS bco) = hang (text "PUSH_ALTS") 2 (ppr bco)
......@@ -221,23 +213,23 @@ instance Outputable BCInstr where
ppr (PUSH_UBX (Left lit) nw) = text "PUSH_UBX" <+> parens (ppr nw) <+> ppr lit
ppr (PUSH_UBX (Right aa) nw) = text "PUSH_UBX" <+> parens (ppr nw) <+> text (show aa)
ppr PUSH_APPLY_N = text "PUSH_APPLY_N"
ppr PUSH_APPLY_V = text "PUSH_APPLY_V"
ppr PUSH_APPLY_F = text "PUSH_APPLY_F"
ppr PUSH_APPLY_D = text "PUSH_APPLY_D"
ppr PUSH_APPLY_L = text "PUSH_APPLY_L"
ppr PUSH_APPLY_P = text "PUSH_APPLY_P"
ppr PUSH_APPLY_PP = text "PUSH_APPLY_PP"
ppr PUSH_APPLY_PPP = text "PUSH_APPLY_PPP"
ppr PUSH_APPLY_PPPP = text "PUSH_APPLY_PPPP"
ppr PUSH_APPLY_PPPPP = text "PUSH_APPLY_PPPPP"
ppr PUSH_APPLY_PPPPPP = text "PUSH_APPLY_PPPPPP"
ppr PUSH_APPLY_N = text "PUSH_APPLY_N"
ppr PUSH_APPLY_V = text "PUSH_APPLY_V"
ppr PUSH_APPLY_F = text "PUSH_APPLY_F"
ppr PUSH_APPLY_D = text "PUSH_APPLY_D"
ppr PUSH_APPLY_L = text "PUSH_APPLY_L"
ppr PUSH_APPLY_P = text "PUSH_APPLY_P"
ppr PUSH_APPLY_PP = text "PUSH_APPLY_PP"
ppr PUSH_APPLY_PPP = text "PUSH_APPLY_PPP"
ppr PUSH_APPLY_PPPP = text "PUSH_APPLY_PPPP"
ppr PUSH_APPLY_PPPPP = text "PUSH_APPLY_PPPPP"
ppr PUSH_APPLY_PPPPPP = text "PUSH_APPLY_PPPPPP"
ppr (SLIDE n d) = text "SLIDE " <+> ppr n <+> ppr d
ppr (ALLOC_AP sz) = text "ALLOC_AP " <+> ppr sz
ppr (ALLOC_AP_NOUPD sz) = text "ALLOC_AP_NOUPD " <+> ppr sz
ppr (ALLOC_PAP arity sz) = text "ALLOC_PAP " <+> ppr arity <+> ppr sz
ppr (MKAP offset sz) = text "MKAP " <+> ppr sz <+> text "words,"
ppr (MKAP offset sz) = text "MKAP " <+> ppr sz <+> text "words,"
<+> ppr offset <+> text "stkoff"
ppr (MKPAP offset sz) = text "MKPAP " <+> ppr sz <+> text "words,"
<+> ppr offset <+> text "stkoff"
......@@ -256,8 +248,8 @@ instance Outputable BCInstr where
ppr (TESTEQ_P i lab) = text "TESTEQ_P" <+> ppr i <+> text "__" <> ppr lab
ppr CASEFAIL = text "CASEFAIL"
ppr (JMP lab) = text "JMP" <+> ppr lab
ppr (CCALL off marshall_addr int) = text "CCALL " <+> ppr off
<+> text "marshall code at"
ppr (CCALL off marshall_addr int) = text "CCALL " <+> ppr off
<+> text "marshall code at"
<+> text (show marshall_addr)
<+> (if int == 1
then text "(interruptible)"
......@@ -265,7 +257,7 @@ instance Outputable BCInstr where
ppr (SWIZZLE stkoff n) = text "SWIZZLE " <+> text "stkoff" <+> ppr stkoff
<+> text "by" <+> ppr n
ppr ENTER = text "ENTER"
ppr RETURN = text "RETURN"
ppr RETURN = text "RETURN"
ppr (RETURN_UBX pk) = text "RETURN_UBX " <+> ppr pk
ppr (BRK_FUN _breakArray index info) = text "BRK_FUN" <+> text "<array>" <+> ppr index <+> ppr info
......@@ -284,54 +276,54 @@ protoBCOStackUse bco = sum (map bciStackUse (protoBCOInstrs bco))
bciStackUse :: BCInstr -> Word
bciStackUse STKCHECK{} = 0
bciStackUse PUSH_L{} = 1
bciStackUse PUSH_LL{} = 2
bciStackUse PUSH_L{} = 1
bciStackUse PUSH_LL{} = 2
bciStackUse PUSH_LLL{} = 3
bciStackUse PUSH_G{} = 1
bciStackUse PUSH_G{} = 1
bciStackUse PUSH_PRIMOP{} = 1
bciStackUse PUSH_BCO{} = 1
bciStackUse PUSH_BCO{} = 1
bciStackUse (PUSH_ALTS bco) = 2 + protoBCOStackUse bco
bciStackUse (PUSH_ALTS_UNLIFTED bco _) = 2 + protoBCOStackUse bco
bciStackUse (PUSH_UBX _ nw) = fromIntegral nw
bciStackUse PUSH_APPLY_N{} = 1
bciStackUse PUSH_APPLY_V{} = 1
bciStackUse PUSH_APPLY_F{} = 1
bciStackUse PUSH_APPLY_D{} = 1
bciStackUse PUSH_APPLY_L{} = 1
bciStackUse PUSH_APPLY_P{} = 1
bciStackUse PUSH_APPLY_PP{} = 1
bciStackUse PUSH_APPLY_PPP{} = 1
bciStackUse PUSH_APPLY_PPPP{} = 1
bciStackUse PUSH_APPLY_PPPPP{} = 1
bciStackUse PUSH_APPLY_PPPPPP{} = 1
bciStackUse PUSH_APPLY_N{} = 1
bciStackUse PUSH_APPLY_V{} = 1
bciStackUse PUSH_APPLY_F{} = 1
bciStackUse PUSH_APPLY_D{} = 1
bciStackUse PUSH_APPLY_L{} = 1
bciStackUse PUSH_APPLY_P{} = 1
bciStackUse PUSH_APPLY_PP{} = 1
bciStackUse PUSH_APPLY_PPP{} = 1
bciStackUse PUSH_APPLY_PPPP{} = 1
bciStackUse PUSH_APPLY_PPPPP{} = 1
bciStackUse PUSH_APPLY_PPPPPP{} = 1
bciStackUse ALLOC_AP{} = 1
bciStackUse ALLOC_AP_NOUPD{} = 1
bciStackUse ALLOC_PAP{} = 1
bciStackUse (UNPACK sz) = fromIntegral sz
bciStackUse LABEL{} = 0
bciStackUse TESTLT_I{} = 0
bciStackUse TESTEQ_I{} = 0
bciStackUse TESTLT_W{} = 0
bciStackUse TESTEQ_W{} = 0
bciStackUse TESTLT_F{} = 0
bciStackUse TESTEQ_F{} = 0
bciStackUse TESTLT_D{} = 0
bciStackUse TESTEQ_D{} = 0
bciStackUse TESTLT_P{} = 0
bciStackUse TESTEQ_P{} = 0
bciStackUse CASEFAIL{} = 0
bciStackUse JMP{} = 0
bciStackUse ENTER{} = 0
bciStackUse RETURN{} = 0
bciStackUse RETURN_UBX{} = 1
bciStackUse CCALL{} = 0
bciStackUse SWIZZLE{} = 0
bciStackUse BRK_FUN{} = 0
bciStackUse LABEL{} = 0
bciStackUse TESTLT_I{} = 0
bciStackUse TESTEQ_I{} = 0
bciStackUse TESTLT_W{} = 0
bciStackUse TESTEQ_W{} = 0
bciStackUse TESTLT_F{} = 0
bciStackUse TESTEQ_F{} = 0
bciStackUse TESTLT_D{} = 0
bciStackUse TESTEQ_D{} = 0
bciStackUse TESTLT_P{} = 0
bciStackUse TESTEQ_P{} = 0
bciStackUse CASEFAIL{} = 0
bciStackUse JMP{} = 0
bciStackUse ENTER{} = 0
bciStackUse RETURN{} = 0
bciStackUse RETURN_UBX{} = 1
bciStackUse CCALL{} = 0
bciStackUse SWIZZLE{} = 0
bciStackUse BRK_FUN{} = 0
-- These insns actually reduce stack use, but we need the high-tide level,
-- so can't use this info. Not that it matters much.
bciStackUse SLIDE{} = 0
bciStackUse MKAP{} = 0
bciStackUse MKPAP{} = 0
bciStackUse PACK{} = 1 -- worst case is PACK 0 words
bciStackUse SLIDE{} = 0
bciStackUse MKAP{} = 0
bciStackUse MKPAP{} = 0
bciStackUse PACK{} = 1 -- worst case is PACK 0 words
\end{code}
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