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-rw-r--r--utils/deriveConstants/DeriveConstants.hs30
1 files changed, 20 insertions, 10 deletions
diff --git a/utils/deriveConstants/DeriveConstants.hs b/utils/deriveConstants/DeriveConstants.hs
index 6344569039..293fe65492 100644
--- a/utils/deriveConstants/DeriveConstants.hs
+++ b/utils/deriveConstants/DeriveConstants.hs
@@ -638,7 +638,7 @@ getWanted verbose tmpdir gccProgram gccFlags nmProgram
oFile = tmpdir </> "tmp.o"
writeFile cFile cStuff
execute verbose gccProgram (gccFlags ++ ["-c", cFile, "-o", oFile])
- xs <- readProcess nmProgram ["-P", oFile] ""
+ xs <- readProcess nmProgram [oFile] ""
let ls = lines xs
ms = map parseNmLine ls
m = Map.fromList $ catMaybes ms
@@ -707,17 +707,27 @@ getWanted verbose tmpdir gccProgram gccFlags nmProgram
doWanted (ClosurePayloadMacro {}) = []
doWanted (FieldTypeGcptrMacro {}) = []
- -- parseNmLine parses "nm -P" output that looks like
- -- "_derivedConstantMAX_Vanilla_REG C b 0" Mac OS X
- -- "derivedConstantMAX_Vanilla_REG C 0000000b 0000000b" GNU
- -- "derivedConstantMAX_Vanilla_REG D 1 b" Solaris
+ -- parseNmLine parses nm output that looks like
+ -- "0000000b C derivedConstantMAX_Vanilla_REG"
-- and returns ("MAX_Vanilla_REG", 11)
- parseNmLine xs0 = case words xs0 of
- [x0, x1, x2, x3] -> case stripPrefix prefix $ dropWhile (== '_') x0 of
- Just name -> case readHex $ if x1 == "C" then x2 else x3 of
- [(size, "")] -> Just (name, size)
+ parseNmLine xs0 = case break (' ' ==) xs0 of
+ (x1, ' ' : xs1) ->
+ case break (' ' ==) xs1 of
+ (x2, ' ' : x3) ->
+ case readHex x1 of
+ [(size, "")] ->
+ case x2 of
+ "C" ->
+ let x3' = case x3 of
+ '_' : rest -> rest
+ _ -> x3
+ in case stripPrefix prefix x3' of
+ Just name ->
+ Just (name, size)
+ _ -> Nothing
+ _ -> Nothing
+ _ -> Nothing
_ -> Nothing
- _ -> Nothing
_ -> Nothing
-- If an Int value is larger than 2^28 or smaller