%
-% (c) The GRASP/AQUA Project, Glasgow University, 1992-1994
+% (c) The GRASP/AQUA Project, Glasgow University, 1992-1998
%
\section[Constants]{Info about this compilation}
-!!!!! THIS CODE MUST AGREE WITH SMinterface.h !!!!!!
-
-*** This SHOULD BE the only module that is CPP'd with "stgdefs.h" stuff.
-
\begin{code}
-module Constants (
- uNFOLDING_USE_THRESHOLD,
- uNFOLDING_CREATION_THRESHOLD,
- iNTERFACE_UNFOLD_THRESHOLD,
- lIBERATE_CASE_THRESHOLD,
- uNFOLDING_CHEAP_OP_COST,
- uNFOLDING_DEAR_OP_COST,
- uNFOLDING_NOREP_LIT_COST,
- uNFOLDING_CON_DISCOUNT_WEIGHT,
- uNFOLDING_KEENESS_FACTOR,
-
- mAX_SPEC_ALL_PTRS,
- mAX_SPEC_ALL_NONPTRS,
- mAX_SPEC_MIXED_FIELDS,
- mAX_SPEC_SELECTEE_SIZE,
-
- tARGET_MIN_INT, tARGET_MAX_INT,
-
- mIN_UPD_SIZE,
- mIN_SIZE_NonUpdHeapObject,
- mIN_SIZE_NonUpdStaticHeapObject,
-
- mAX_FAMILY_SIZE_FOR_VEC_RETURNS,
-
- sTD_UF_SIZE, cON_UF_SIZE,
- sCC_STD_UF_SIZE, sCC_CON_UF_SIZE,
- uF_RET,
- uF_SUB,
- uF_SUA,
- uF_UPDATEE,
- uF_COST_CENTRE,
-
- mAX_Vanilla_REG,
- mAX_Float_REG,
- mAX_Double_REG,
- mAX_Long_REG,
-
- mIN_MP_INT_SIZE,
- mP_STRUCT_SIZE,
-
- oTHER_TAG, iND_TAG, -- semi-tagging stuff
-
- lIVENESS_R1,
- lIVENESS_R2,
- lIVENESS_R3,
- lIVENESS_R4,
- lIVENESS_R5,
- lIVENESS_R6,
- lIVENESS_R7,
- lIVENESS_R8,
-
- mAX_INTLIKE, mIN_INTLIKE,
-
-
- spARelToInt,
- spBRelToInt
- ) where
+module Constants (module Constants) where
-- This magical #include brings in all the everybody-knows-these magic
-- constants unfortunately, we need to be *explicit* about which one
-- be in trouble.
#include "HsVersions.h"
-#include "../../includes/GhcConstants.h"
+#include "../includes/ghcconfig.h"
+#include "../includes/MachRegs.h"
+#include "../includes/Constants.h"
+#include "../includes/MachDeps.h"
+#include "../includes/DerivedConstants.h"
-import Util
+-- import Util
\end{code}
All pretty arbitrary:
+
\begin{code}
-uNFOLDING_USE_THRESHOLD = ( 8 :: Int)
-uNFOLDING_CREATION_THRESHOLD = (30 :: Int) -- Discounts can be big
-iNTERFACE_UNFOLD_THRESHOLD = (30 :: Int)
-lIBERATE_CASE_THRESHOLD = (10 :: Int)
-
-uNFOLDING_CHEAP_OP_COST = ( 1 :: Int)
-uNFOLDING_DEAR_OP_COST = ( 4 :: Int)
-uNFOLDING_NOREP_LIT_COST = ( 20 :: Int) -- Strings can be pretty big
-uNFOLDING_CON_DISCOUNT_WEIGHT = ( 3 :: Int)
-uNFOLDING_KEENESS_FACTOR = ( 2.0 :: Float)
+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}
-mAX_SPEC_ALL_PTRS = (MAX_SPEC_ALL_PTRS :: Int)
-mAX_SPEC_ALL_NONPTRS = (MAX_SPEC_ALL_NONPTRS :: Int)
-mAX_SPEC_MIXED_FIELDS = (MAX_SPEC_OTHER_SIZE :: Int)
+-- 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
+-- closure sizes: these do NOT include the header (see below for header sizes)
mIN_UPD_SIZE = (MIN_UPD_SIZE::Int)
mIN_SIZE_NonUpdHeapObject = (MIN_NONUPD_SIZE::Int)
-mIN_SIZE_NonUpdStaticHeapObject = (0::Int)
\end{code}
-Sizes of gmp objects:
\begin{code}
-mIN_MP_INT_SIZE = (MIN_MP_INT_SIZE :: Int)
-mP_STRUCT_SIZE = (MP_STRUCT_SIZE :: Int)
+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}
-tARGET_MIN_INT, tARGET_MAX_INT :: Integer
-tARGET_MIN_INT = -536870912
-tARGET_MAX_INT = 536870912
+mAX_FAMILY_SIZE_FOR_VEC_RETURNS = (MAX_VECTORED_RTN::Int) -- pretty arbitrary
+-- If you change this, you may need to change runtimes/standard/Update.lhc
\end{code}
-
-Constants for semi-tagging; the tags associated with the data
-constructors will start at 0 and go up.
+
\begin{code}
-oTHER_TAG = (INFO_OTHER_TAG :: Integer) -- (-1) unevaluated, probably
-iND_TAG = (INFO_IND_TAG :: Integer) -- (-2) NOT USED, REALLY
+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}
-Stuff for liveness masks:
+Closure header sizes.
+
\begin{code}
-lIVENESS_R1 = (LIVENESS_R1 :: Int)
-lIVENESS_R2 = (LIVENESS_R2 :: Int)
-lIVENESS_R3 = (LIVENESS_R3 :: Int)
-lIVENESS_R4 = (LIVENESS_R4 :: Int)
-lIVENESS_R5 = (LIVENESS_R5 :: Int)
-lIVENESS_R6 = (LIVENESS_R6 :: Int)
-lIVENESS_R7 = (LIVENESS_R7 :: Int)
-lIVENESS_R8 = (LIVENESS_R8 :: Int)
+sTD_HDR_SIZE = (STD_HDR_SIZE :: Int)
+pROF_HDR_SIZE = (PROF_HDR_SIZE :: Int)
+gRAN_HDR_SIZE = (GRAN_HDR_SIZE :: Int)
\end{code}
+Info Table sizes.
+
\begin{code}
-mIN_INTLIKE, mAX_INTLIKE :: Integer -- Only used to compare with (MachInt Integer)
-mIN_INTLIKE = MIN_INTLIKE
-mAX_INTLIKE = MAX_INTLIKE
+sTD_ITBL_SIZE = (STD_ITBL_SIZE :: Int)
+rET_ITBL_SIZE = (RET_ITBL_SIZE :: Int)
+pROF_ITBL_SIZE = (PROF_ITBL_SIZE :: Int)
+gRAN_ITBL_SIZE = (GRAN_ITBL_SIZE :: Int)
+tICKY_ITBL_SIZE = (TICKY_ITBL_SIZE :: Int)
\end{code}
+Size of a double in StgWords.
+
\begin{code}
--- THESE ARE DIRECTION SENSITIVE!
-spARelToInt :: Int{-VirtualSpAOffset-} -> Int{-VirtualSpAOffset-} -> Int
-spBRelToInt :: Int{-VirtualSpBOffset-} -> Int{-VirtualSpBOffset-} -> Int
+dOUBLE_SIZE = SIZEOF_DOUBLE :: Int
+wORD64_SIZE = 8 :: Int
+iNT64_SIZE = wORD64_SIZE
+\end{code}
+
+This tells the native code generator the size of the spill
+area is has available.
-spARelToInt spA off = spA - off -- equiv to: AREL(spA - off)
-spBRelToInt spB off = off - spB -- equiv to: BREL(spB - off)
+\begin{code}
+rESERVED_C_STACK_BYTES = (RESERVED_C_STACK_BYTES :: Int)
\end{code}
-A section of code-generator-related MAGIC CONSTANTS.
+The amount of (Haskell) stack to leave free for saving registers when
+returning to the scheduler.
+
\begin{code}
-mAX_FAMILY_SIZE_FOR_VEC_RETURNS = (MAX_VECTORED_RTN::Int) -- pretty arbitrary
--- If you change this, you may need to change runtimes/standard/Update.lhc
+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}
+
+Size of a storage manager block (in bytes).
--- The update frame sizes
-sTD_UF_SIZE = (NOSCC_STD_UF_SIZE::Int)
-cON_UF_SIZE = (NOSCC_CON_UF_SIZE::Int)
+\begin{code}
+bLOCK_SIZE = (BLOCK_SIZE :: Int)
+bLOCK_SIZE_W = (bLOCK_SIZE `quot` wORD_SIZE :: Int)
+\end{code}
--- Same again, with profiling
-sCC_STD_UF_SIZE = (SCC_STD_UF_SIZE::Int)
-sCC_CON_UF_SIZE = (SCC_CON_UF_SIZE::Int)
+Number of bits to shift a bitfield left by in an info table.
--- Offsets in an update frame. They don't change with profiling!
-uF_RET = (UF_RET::Int)
-uF_SUB = (UF_SUB::Int)
-uF_SUA = (UF_SUA::Int)
-uF_UPDATEE = (UF_UPDATEE::Int)
-uF_COST_CENTRE = (UF_COST_CENTRE::Int)
+\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}
-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)
+#include "../includes/GHCConstants.h"
\end{code}
projects / ghc-hetmet.git / blobdiff