\section[Constants]{Info about this compilation}
\begin{code}
-{-# OPTIONS -w #-}
--- The above warning supression flag is a temporary kludge.
--- While working on this module you are encouraged to remove it and fix
--- any warnings in the module. See
--- http://hackage.haskell.org/trac/ghc/wiki/CodingStyle#Warnings
--- for details
-
module Constants (module Constants) where
-import Data.Bits (shiftL)
-
--- This magical #include brings in all the everybody-knows-these magic
--- constants unfortunately, we need to be *explicit* about which one
--- we want; if we just hope a -I... will get the right one, we could
--- be in trouble.
-
-#include "HsVersions.h"
-#include "../includes/MachRegs.h"
-#include "../includes/Constants.h"
-#include "../includes/MachDeps.h"
-#include "../includes/DerivedConstants.h"
-
--- import Util
-\end{code}
-
-All pretty arbitrary:
-
-\begin{code}
-mAX_TUPLE_SIZE = (62 :: Int) -- Should really match the number
- -- of decls in Data.Tuple
-mAX_CONTEXT_REDUCTION_DEPTH = (20 :: Int)
-\end{code}
-
-
-\begin{code}
--- specialised fun/thunk/constr closure types
-mAX_SPEC_THUNK_SIZE = (MAX_SPEC_THUNK_SIZE :: Int)
-mAX_SPEC_FUN_SIZE = (MAX_SPEC_FUN_SIZE :: Int)
-mAX_SPEC_CONSTR_SIZE = (MAX_SPEC_CONSTR_SIZE :: Int)
-
--- pre-compiled thunk types
-mAX_SPEC_SELECTEE_SIZE = (MAX_SPEC_SELECTEE_SIZE :: Int)
-mAX_SPEC_AP_SIZE = (MAX_SPEC_AP_SIZE :: Int)
-
--- closure sizes: these do NOT include the header (see below for header sizes)
-mIN_PAYLOAD_SIZE = (MIN_PAYLOAD_SIZE::Int)
-\end{code}
+#include "ghc_boot_platform.h"
-\begin{code}
-mIN_INTLIKE, mAX_INTLIKE :: Int
-mIN_INTLIKE = MIN_INTLIKE
-mAX_INTLIKE = MAX_INTLIKE
-
-mIN_CHARLIKE, mAX_CHARLIKE :: Int
-mIN_CHARLIKE = MIN_CHARLIKE
-mAX_CHARLIKE = MAX_CHARLIKE
-\end{code}
-
-A section of code-generator-related MAGIC CONSTANTS.
-
-\begin{code}
-mAX_Vanilla_REG = (MAX_VANILLA_REG :: Int)
-mAX_Float_REG = (MAX_FLOAT_REG :: Int)
-mAX_Double_REG = (MAX_DOUBLE_REG :: Int)
-mAX_Long_REG = (MAX_LONG_REG :: Int)
-
-mAX_Real_Vanilla_REG = (MAX_REAL_VANILLA_REG :: Int)
-mAX_Real_Float_REG = (MAX_REAL_FLOAT_REG :: Int)
-mAX_Real_Double_REG = (MAX_REAL_DOUBLE_REG :: Int)
-#ifdef MAX_REAL_LONG_REG
-mAX_Real_Long_REG = (MAX_REAL_LONG_REG :: Int)
-#else
-mAX_Real_Long_REG = (0::Int)
-#endif
-\end{code}
-
-Closure header sizes.
-
-\begin{code}
-sTD_HDR_SIZE = (STD_HDR_SIZE :: Int)
-pROF_HDR_SIZE = (PROF_HDR_SIZE :: Int)
-gRAN_HDR_SIZE = (GRAN_HDR_SIZE :: Int)
-\end{code}
-
-Size of a double in StgWords.
-
-\begin{code}
-dOUBLE_SIZE = SIZEOF_DOUBLE :: Int
-wORD64_SIZE = 8 :: Int
-iNT64_SIZE = wORD64_SIZE
-\end{code}
+#include "../includes/HaskellConstants.hs"
-This tells the native code generator the size of the spill
-area is has available.
-
-\begin{code}
-rESERVED_C_STACK_BYTES = (RESERVED_C_STACK_BYTES :: Int)
-\end{code}
-
-The amount of (Haskell) stack to leave free for saving registers when
-returning to the scheduler.
-
-\begin{code}
-rESERVED_STACK_WORDS = (RESERVED_STACK_WORDS :: Int)
-\end{code}
-
-Size of a word, in bytes
-
-\begin{code}
-wORD_SIZE = (SIZEOF_HSWORD :: Int)
-wORD_SIZE_IN_BITS = wORD_SIZE * 8 :: Int
-\end{code}
-
-Amount of pointer bits used for semi-tagging constructor closures
-
-\begin{code}
-tAG_BITS = (TAG_BITS :: Int)
-tAG_MASK = ((1 `shiftL` tAG_BITS) - 1) :: Int
-mAX_PTR_TAG = tAG_MASK :: Int
-\end{code}
-
-Size of a C int, in bytes. May be smaller than wORD_SIZE.
-
-\begin{code}
-cINT_SIZE = (SIZEOF_INT :: Int)
-\end{code}
-
-Size of a storage manager block (in bytes).
-
-\begin{code}
-bLOCK_SIZE = (BLOCK_SIZE :: Int)
-bLOCK_SIZE_W = (bLOCK_SIZE `quot` wORD_SIZE :: Int)
-\end{code}
-
-Number of bits to shift a bitfield left by in an info table.
-
-\begin{code}
-bITMAP_BITS_SHIFT = (BITMAP_BITS_SHIFT :: Int)
-\end{code}
-
-Constants derived from headers in ghc/includes, generated by the program
-../includes/mkDerivedConstants.c.
-
-\begin{code}
-#include "../includes/GHCConstants.h"
\end{code}
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