diff options
Diffstat (limited to 'compiler/nativeGen/SPARC/Stack.hs')
| -rw-r--r-- | compiler/nativeGen/SPARC/Stack.hs | 49 |
1 files changed, 20 insertions, 29 deletions
diff --git a/compiler/nativeGen/SPARC/Stack.hs b/compiler/nativeGen/SPARC/Stack.hs index 4a6f4c1335..629b18789f 100644 --- a/compiler/nativeGen/SPARC/Stack.hs +++ b/compiler/nativeGen/SPARC/Stack.hs @@ -1,16 +1,8 @@ - -{-# OPTIONS -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 - module SPARC.Stack ( - spRel, - fpRel, - spillSlotToOffset, - maxSpillSlots + spRel, + fpRel, + spillSlotToOffset, + maxSpillSlots ) where @@ -24,43 +16,42 @@ import DynFlags import Outputable -- | Get an AddrMode relative to the address in sp. --- This gives us a stack relative addressing mode for volatile --- temporaries and for excess call arguments. +-- This gives us a stack relative addressing mode for volatile +-- temporaries and for excess call arguments. -- -spRel :: Int -- ^ stack offset in words, positive or negative +spRel :: Int -- ^ stack offset in words, positive or negative -> AddrMode -spRel n = AddrRegImm sp (ImmInt (n * wordLength)) +spRel n = AddrRegImm sp (ImmInt (n * wordLength)) -- | Get an address relative to the frame pointer. --- This doesn't work work for offsets greater than 13 bits; we just hope for the best +-- This doesn't work work for offsets greater than 13 bits; we just hope for the best -- fpRel :: Int -> AddrMode fpRel n - = AddrRegImm fp (ImmInt (n * wordLength)) + = AddrRegImm fp (ImmInt (n * wordLength)) -- | Convert a spill slot number to a *byte* offset, with no sign. -- spillSlotToOffset :: DynFlags -> Int -> Int spillSlotToOffset dflags slot - | slot >= 0 && slot < maxSpillSlots dflags - = 64 + spillSlotSize * slot + | slot >= 0 && slot < maxSpillSlots dflags + = 64 + spillSlotSize * slot - | otherwise - = pprPanic "spillSlotToOffset:" - ( text "invalid spill location: " <> int slot - $$ text "maxSpillSlots: " <> int (maxSpillSlots dflags)) + | otherwise + = pprPanic "spillSlotToOffset:" + ( text "invalid spill location: " <> int slot + $$ text "maxSpillSlots: " <> int (maxSpillSlots dflags)) -- | The maximum number of spill slots available on the C stack. --- If we use up all of the slots, then we're screwed. +-- If we use up all of the slots, then we're screwed. -- --- Why do we reserve 64 bytes, instead of using the whole thing?? --- -- BL 2009/02/15 +-- Why do we reserve 64 bytes, instead of using the whole thing?? +-- -- BL 2009/02/15 -- maxSpillSlots :: DynFlags -> Int maxSpillSlots dflags - = ((spillAreaLength dflags - 64) `div` spillSlotSize) - 1 - + = ((spillAreaLength dflags - 64) `div` spillSlotSize) - 1 |