import Char ( ord, chr )
import IO ( Handle )
import DATA_BITS
+import Data.Word ( Word8 )
#ifdef DEBUG
import PprCmm () -- instances only
writeCs :: DynFlags -> Handle -> [Cmm] -> IO ()
writeCs dflags handle cmms
- = printForUser handle alwaysQualify (pprCs dflags cmms)
- -- ToDo: should be printForC
+ = printForC handle (pprCs dflags cmms)
-- --------------------------------------------------------------------------
-- Now do some real work
-> ptext SLIT("ASSIGN_Word64") <>
parens (mkP_ <> pprExpr1 dest <> comma <> pprExpr src) <> semi
+ | rep == F64 && wordRep /= I64
+ -> ptext SLIT("ASSIGN_DBL") <>
+ parens (mkP_ <> pprExpr1 dest <> comma <> pprExpr src) <> semi
+
| otherwise
-> hsep [ pprExpr (CmmLoad dest rep), equals, pprExpr src <> semi ]
where
CmmLoad e I64 | wordRep /= I64
-> ptext SLIT("PK_Word64") <> parens (mkP_ <> pprExpr1 e)
+ CmmLoad e F64 | wordRep /= I64
+ -> ptext SLIT("PK_DBL") <> parens (mkP_ <> pprExpr1 e)
+
CmmLoad (CmmReg r) rep
| isPtrReg r && rep == wordRep
-> char '*' <> pprAsPtrReg r
MO_F64_Log -> ptext SLIT("log")
MO_F64_Exp -> ptext SLIT("exp")
MO_F64_Sqrt -> ptext SLIT("sqrt")
- MO_F32_Pwr -> ptext SLIT("pow")
- MO_F32_Sin -> ptext SLIT("sin")
- MO_F32_Cos -> ptext SLIT("cos")
- MO_F32_Tan -> ptext SLIT("tan")
- MO_F32_Sinh -> ptext SLIT("sinh")
- MO_F32_Cosh -> ptext SLIT("cosh")
- MO_F32_Tanh -> ptext SLIT("tanh")
- MO_F32_Asin -> ptext SLIT("asin")
- MO_F32_Acos -> ptext SLIT("acos")
- MO_F32_Atan -> ptext SLIT("atan")
- MO_F32_Log -> ptext SLIT("log")
- MO_F32_Exp -> ptext SLIT("exp")
- MO_F32_Sqrt -> ptext SLIT("sqrt")
+ MO_F32_Pwr -> ptext SLIT("powf")
+ MO_F32_Sin -> ptext SLIT("sinf")
+ MO_F32_Cos -> ptext SLIT("cosf")
+ MO_F32_Tan -> ptext SLIT("tanf")
+ MO_F32_Sinh -> ptext SLIT("sinhf")
+ MO_F32_Cosh -> ptext SLIT("coshf")
+ MO_F32_Tanh -> ptext SLIT("tanhf")
+ MO_F32_Asin -> ptext SLIT("asinf")
+ MO_F32_Acos -> ptext SLIT("acosf")
+ MO_F32_Atan -> ptext SLIT("atanf")
+ MO_F32_Log -> ptext SLIT("logf")
+ MO_F32_Exp -> ptext SLIT("expf")
+ MO_F32_Sqrt -> ptext SLIT("sqrtf")
-- ---------------------------------------------------------------------
-- Useful #defines
strangeRegType :: CmmReg -> Maybe SDoc
strangeRegType (CmmGlobal CurrentTSO) = Just (ptext SLIT("struct StgTSO_ *"))
strangeRegType (CmmGlobal CurrentNursery) = Just (ptext SLIT("struct bdescr_ *"))
+strangeRegType (CmmGlobal BaseReg) = Just (ptext SLIT("struct StgRegTable_ *"))
strangeRegType _ = Nothing
-- pprReg just prints the register name.
pprCall ppr_fn cconv results args vols
| not (is_cish cconv)
- = panic "pprForeignCall: unknown calling convention"
+ = panic "pprCall: unknown calling convention"
| otherwise
= save vols $$
ptext SLIT("CALLER_SAVE_SYSTEM") $$
- hcat [ ppr_results results, ppr_fn,
- parens (commafy (map pprArg args)), semi ] $$
+ ppr_assign results (ppr_fn <> parens (commafy (map pprArg args))) <> semi $$
ptext SLIT("CALLER_RESTORE_SYSTEM") $$
restore vols
where
- ppr_results [] = empty
- ppr_results [(one,hint)]
+ ppr_assign [] rhs = rhs
+ ppr_assign [(reg@(CmmGlobal BaseReg), hint)] rhs
+ | Just ty <- strangeRegType reg
+ = ptext SLIT("ASSIGN_BaseReg") <> parens (parens ty <> rhs)
+ -- BaseReg is special, sometimes it isn't an lvalue and we
+ -- can't assign to it.
+ ppr_assign [(one,hint)] rhs
+ | Just ty <- strangeRegType one
+ = pprReg one <> ptext SLIT(" = ") <> parens ty <> rhs
+ | otherwise
= pprReg one <> ptext SLIT(" = ")
- <> pprUnHint hint (cmmRegRep one)
- ppr_results _other = panic "pprCall: multiple results"
+ <> pprUnHint hint (cmmRegRep one) <> rhs
+ ppr_assign _other _rhs = panic "pprCall: multiple results"
pprArg (expr, PtrHint)
= cCast (ptext SLIT("void *")) expr
VanillaReg n -> char 'R' <> int n -- without the .w suffix
_ -> pprGlobalReg gr
+-- Currently we only have these two calling conventions, but this might
+-- change in the future...
is_cish CCallConv = True
is_cish StdCallConv = True
-is_cish _ = False
-- ---------------------------------------------------------------------
-- Find and print local and external declarations for a list of
te_Expr :: CmmExpr -> TE ()
te_Expr (CmmLit lit) = te_Lit lit
-te_Expr (CmmReg r) = te_Reg r
te_Expr (CmmLoad e _) = te_Expr e
+te_Expr (CmmReg r) = te_Reg r
te_Expr (CmmMachOp _ es) = mapM_ te_Expr es
te_Expr (CmmRegOff r _) = te_Reg r
-te_Expr _ = return ()
te_Reg :: CmmReg -> TE ()
te_Reg (CmmLocal l) = te_temp l
-- ---------------------------------------------------------------------
-- print strings as valid C strings
--- Assumes it contains only characters '\0'..'\xFF'!
-pprFSInCStyle :: FastString -> SDoc
-pprFSInCStyle fs = pprStringInCStyle (unpackFS fs)
-
-pprStringInCStyle :: String -> SDoc
+pprStringInCStyle :: [Word8] -> SDoc
pprStringInCStyle s = doubleQuotes (text (concatMap charToC s))
-charToC :: Char -> String
-charToC '\"' = "\\\""
-charToC '\'' = "\\\'"
-charToC '\\' = "\\\\"
-charToC c | c >= ' ' && c <= '~' = [c]
- | c > '\xFF' = panic ("charToC "++show c)
- | otherwise = ['\\',
+charToC :: Word8 -> String
+charToC w =
+ case chr (fromIntegral w) of
+ '\"' -> "\\\""
+ '\'' -> "\\\'"
+ '\\' -> "\\\\"
+ c | c >= ' ' && c <= '~' -> [c]
+ | otherwise -> ['\\',
chr (ord '0' + ord c `div` 64),
chr (ord '0' + ord c `div` 8 `mod` 8),
chr (ord '0' + ord c `mod` 8)]
-
-- ---------------------------------------------------------------------------
-- Initialising static objects with floating-point numbers. We can't
-- just emit the floating point number, because C will cast it to an int
| otherwise = ptext SLIT("0x") <> go w <> repsuffix rep
where
-- type suffix for literals:
- -- on 32-bit platforms, add "LL" to 64-bit literals
- repsuffix I64 | wORD_SIZE == 4 = ptext SLIT("LL")
+ -- Integer literals are unsigned in Cmm/C. We explicitly cast to
+ -- signed values for doing signed operations, but at all other
+ -- times values are unsigned. This also helps eliminate occasional
+ -- warnings about integer overflow from gcc.
+
+ -- on 32-bit platforms, add "ULL" to 64-bit literals
+ repsuffix I64 | wORD_SIZE == 4 = ptext SLIT("ULL")
-- on 64-bit platforms with 32-bit int, add "L" to 64-bit literals
- repsuffix I64 | cINT_SIZE == 4 = ptext SLIT("L")
- repsuffix _ = empty
+ repsuffix I64 | cINT_SIZE == 4 = ptext SLIT("UL")
+ repsuffix _ = char 'U'
go 0 = empty
go w' = go q <> dig
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