2 % (c) The GRASP/AQUA Project, Glasgow University, 1992-1998
4 \section[Constants]{Info about this compilation}
8 mAX_CONTEXT_REDUCTION_DEPTH,
14 mAX_SPEC_SELECTEE_SIZE,
18 mIN_SIZE_NonUpdHeapObject,
26 rESERVED_C_STACK_BYTES,
34 mAX_FAMILY_SIZE_FOR_VEC_RETURNS,
46 gRAN_SEQ_FRAME_SIZE, -- HWL
60 mAX_INTLIKE, mIN_INTLIKE,
61 mAX_CHARLIKE, mIN_CHARLIKE,
76 -- This magical #include brings in all the everybody-knows-these magic
77 -- constants unfortunately, we need to be *explicit* about which one
78 -- we want; if we just hope a -I... will get the right one, we could
81 #include "HsVersions.h"
82 #include "../includes/config.h"
83 #include "../includes/MachRegs.h"
84 #include "../includes/Constants.h"
92 mAX_TUPLE_SIZE = (37 :: Int)
93 mAX_CONTEXT_REDUCTION_DEPTH = (20 :: Int)
98 -- specialised fun/thunk/constr closure types
99 mAX_SPEC_THUNK_SIZE = (MAX_SPEC_THUNK_SIZE :: Int)
100 mAX_SPEC_FUN_SIZE = (MAX_SPEC_FUN_SIZE :: Int)
101 mAX_SPEC_CONSTR_SIZE = (MAX_SPEC_CONSTR_SIZE :: Int)
103 -- pre-compiled thunk types
104 mAX_SPEC_SELECTEE_SIZE = (MAX_SPEC_SELECTEE_SIZE :: Int)
105 mAX_SPEC_AP_SIZE = (MAX_SPEC_AP_SIZE :: Int)
107 -- closure sizes: these do NOT include the header (see below for header sizes)
108 mIN_UPD_SIZE = (MIN_UPD_SIZE::Int)
109 mIN_SIZE_NonUpdHeapObject = (MIN_NONUPD_SIZE::Int)
112 Constants for semi-tagging; the tags associated with the data
113 constructors will start at 0 and go up.
116 oTHER_TAG = (INFO_OTHER_TAG :: Integer) -- (-1) unevaluated, probably
120 mIN_INTLIKE, mAX_INTLIKE :: Integer -- Only used to compare with (MachInt Integer)
121 mIN_INTLIKE = MIN_INTLIKE
122 mAX_INTLIKE = MAX_INTLIKE
124 mIN_CHARLIKE, mAX_CHARLIKE :: Int -- Only used to compare with (MachChar Int)
125 mIN_CHARLIKE = MIN_CHARLIKE
126 mAX_CHARLIKE = MAX_CHARLIKE
129 A little function that abstracts the stack direction. Note that most
130 of the code generator is dependent on the stack direction anyway, so
131 changing this on its own spells certain doom. ToDo: remove?
134 -- THIS IS DIRECTION SENSITIVE!
136 -- stack grows down, positive virtual offsets correspond to negative
137 -- additions to the stack pointer.
139 spRelToInt :: Int{-VirtualSpOffset-} -> Int{-VirtualSpOffset-} -> Int
140 spRelToInt sp off = sp - off
143 A section of code-generator-related MAGIC CONSTANTS.
146 mAX_FAMILY_SIZE_FOR_VEC_RETURNS = (MAX_VECTORED_RTN::Int) -- pretty arbitrary
147 -- If you change this, you may need to change runtimes/standard/Update.lhc
149 -- The update frame sizes
150 uF_SIZE = (NOSCC_UF_SIZE::Int)
152 -- Same again, with profiling
153 sCC_UF_SIZE = (SCC_UF_SIZE::Int)
155 -- Same again, with gransim
156 gRAN_UF_SIZE = (GRAN_UF_SIZE::Int)
158 -- Offsets in an update frame. They don't change with profiling!
159 uF_RET = (UF_RET::Int)
161 uF_UPDATEE = (UF_UPDATEE::Int)
162 uF_CCS = (UF_CCS::Int)
168 sEQ_FRAME_SIZE = (NOSCC_SEQ_FRAME_SIZE::Int)
169 sCC_SEQ_FRAME_SIZE = (SCC_SEQ_FRAME_SIZE::Int)
170 gRAN_SEQ_FRAME_SIZE = (GRAN_SEQ_FRAME_SIZE::Int)
174 mAX_Vanilla_REG = (MAX_VANILLA_REG :: Int)
175 mAX_Float_REG = (MAX_FLOAT_REG :: Int)
176 mAX_Double_REG = (MAX_DOUBLE_REG :: Int)
177 mAX_Long_REG = (MAX_LONG_REG :: Int)
179 mAX_Real_Vanilla_REG = (MAX_REAL_VANILLA_REG :: Int)
180 mAX_Real_Float_REG = (MAX_REAL_FLOAT_REG :: Int)
181 mAX_Real_Double_REG = (MAX_REAL_DOUBLE_REG :: Int)
182 #ifdef MAX_REAL_LONG_REG
183 mAX_Real_Long_REG = (MAX_REAL_LONG_REG :: Int)
185 mAX_Real_Long_REG = (0::Int)
189 Closure header sizes.
192 sTD_HDR_SIZE = (STD_HDR_SIZE :: Int)
193 pROF_HDR_SIZE = (PROF_HDR_SIZE :: Int)
194 gRAN_HDR_SIZE = (GRAN_HDR_SIZE :: Int)
195 tICKY_HDR_SIZE = (TICKY_HDR_SIZE :: Int)
196 aRR_WORDS_HDR_SIZE = (ARR_WORDS_HDR_SIZE :: Int)
197 aRR_PTRS_HDR_SIZE = (ARR_PTRS_HDR_SIZE :: Int)
203 sTD_ITBL_SIZE = (STD_ITBL_SIZE :: Int)
204 pROF_ITBL_SIZE = (PROF_ITBL_SIZE :: Int)
205 gRAN_ITBL_SIZE = (GRAN_ITBL_SIZE :: Int)
206 tICKY_ITBL_SIZE = (TICKY_ITBL_SIZE :: Int)
209 Size of a double in StgWords.
212 dOUBLE_SIZE = (DOUBLE_SIZE :: Int)
213 wORD64_SIZE = (WORD64_SIZE :: Int)
214 iNT64_SIZE = (INT64_SIZE :: Int)
217 This tells the native code generator the size of the spill
218 area is has available.
221 rESERVED_C_STACK_BYTES = (RESERVED_C_STACK_BYTES :: Int)
224 The amount of (Haskell) stack to leave free for saving registers when
225 returning to the scheduler.
228 rESERVED_STACK_WORDS = (RESERVED_STACK_WORDS :: Int)
231 Size of a word, in bytes
234 wORD_SIZE = (WORD_SIZE :: Int)
237 Size of a storage manager block (in bytes).
240 bLOCK_SIZE = (BLOCK_SIZE :: Int)
241 bLOCK_SIZE_W = (bLOCK_SIZE `div` wORD_SIZE :: Int)