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-- | A description of the platform we're compiling for.
--
module Platform (
Platform(..),
Arch(..),
OS(..),
ArmISA(..),
ArmISAExt(..),
ArmABI(..),
target32Bit,
isARM,
osElfTarget,
osMachOTarget,
platformUsesFrameworks,
platformBinariesAreStaticLibs,
CPUDesc(..), isx86Desc,
IntelCPU(..),
IntelFeature(..),
descToCPU,
intelCPUFeatures
)
where
-- | Contains enough information for the native code generator to emit
-- code for this platform.
data Platform
= Platform {
platformArch :: Arch,
platformOS :: OS,
-- Word size in bytes (i.e. normally 4 or 8,
-- for 32bit and 64bit platforms respectively)
platformWordSize :: {-# UNPACK #-} !Int,
platformUnregisterised :: Bool,
platformHasGnuNonexecStack :: Bool,
platformHasIdentDirective :: Bool,
platformHasSubsectionsViaSymbols :: Bool
}
deriving (Read, Show, Eq)
-- | Architectures that the native code generator knows about.
-- TODO: It might be nice to extend these constructors with information
-- about what instruction set extensions an architecture might support.
--
data Arch
= ArchUnknown
| ArchX86
| ArchX86_64
| ArchPPC
| ArchPPC_64
| ArchSPARC
| ArchARM
{ armISA :: ArmISA
, armISAExt :: [ArmISAExt]
, armABI :: ArmABI
}
| ArchARM64
| ArchAlpha
| ArchMipseb
| ArchMipsel
| ArchJavaScript
deriving (Read, Show, Eq)
isARM :: Arch -> Bool
isARM (ArchARM {}) = True
isARM _ = False
-- | Operating systems that the native code generator knows about.
-- Having OSUnknown should produce a sensible default, but no promises.
data OS
= OSUnknown
| OSLinux
| OSDarwin
| OSiOS
| OSSolaris2
| OSMinGW32
| OSFreeBSD
| OSDragonFly
| OSOpenBSD
| OSNetBSD
| OSKFreeBSD
| OSHaiku
| OSOsf3
| OSQNXNTO
| OSAndroid
deriving (Read, Show, Eq)
-- | ARM Instruction Set Architecture, Extensions and ABI
--
data ArmISA
= ARMv5
| ARMv6
| ARMv7
deriving (Read, Show, Eq)
data ArmISAExt
= VFPv2
| VFPv3
| VFPv3D16
| NEON
| IWMMX2
deriving (Read, Show, Eq)
data ArmABI
= SOFT
| SOFTFP
| HARD
deriving (Read, Show, Eq)
target32Bit :: Platform -> Bool
target32Bit p = platformWordSize p == 4
-- | This predicates tells us whether the OS supports ELF-like shared libraries.
osElfTarget :: OS -> Bool
osElfTarget OSLinux = True
osElfTarget OSFreeBSD = True
osElfTarget OSDragonFly = True
osElfTarget OSOpenBSD = True
osElfTarget OSNetBSD = True
osElfTarget OSSolaris2 = True
osElfTarget OSDarwin = False
osElfTarget OSiOS = False
osElfTarget OSMinGW32 = False
osElfTarget OSKFreeBSD = True
osElfTarget OSHaiku = True
osElfTarget OSOsf3 = False -- I don't know if this is right, but as
-- per comment below it's safe
osElfTarget OSQNXNTO = False
osElfTarget OSAndroid = True
osElfTarget OSUnknown = False
-- Defaulting to False is safe; it means don't rely on any
-- ELF-specific functionality. It is important to have a default for
-- portability, otherwise we have to answer this question for every
-- new platform we compile on (even unreg).
-- | This predicate tells us whether the OS support Mach-O shared libraries.
osMachOTarget :: OS -> Bool
osMachOTarget OSDarwin = True
osMachOTarget _ = False
osUsesFrameworks :: OS -> Bool
osUsesFrameworks OSDarwin = True
osUsesFrameworks OSiOS = True
osUsesFrameworks _ = False
platformUsesFrameworks :: Platform -> Bool
platformUsesFrameworks = osUsesFrameworks . platformOS
osBinariesAreStaticLibs :: OS -> Bool
osBinariesAreStaticLibs OSiOS = True
osBinariesAreStaticLibs _ = False
platformBinariesAreStaticLibs :: Platform -> Bool
platformBinariesAreStaticLibs = osBinariesAreStaticLibs . platformOS
-- -----------------------------------------------------------------------------
-- Platform-specific micro architectures.
-- CPU descriptions that may be fed to -mcpu or -march
data CPUDesc
= Generic
| Native
| Intel IntelCPU
isx86Desc :: CPUDesc -> Bool
isx86Desc (Intel _) = True
isx86Desc _ = False
-- -----------------------------------------------------------------------------
-- Intel
-- Description of all Intel CPUs. Order isn't necessarily important -
-- we'll discriminate on feature set later anyway.
data IntelCPU
= I386CPU
| I486CPU
| I586CPU
| PentiumMMX
| PentiumPro
| I686CPU
| Pentium2
| Pentium3
| Pentium3M
| PentiumM
| Pentium4
| Pentium4M
| Prescott
| NoCona
| Core2
| Nehalem
| Westmere
| Sandybridge
| Ivybridge
| Haswell
| Bonnell
| Silvermont
| Broadwell
data IntelFeature
= MMX
| SSE
| SSE2
| SSE3
| SSSE3
| SSE4
| SSE41
| SSE42
| AVX1
| ERMSB -- "Extended rep-movsb"
| AVX2
descToCPU :: String -> Maybe CPUDesc
descToCPU "generic" = Just Generic
descToCPU "native" = Just Native
descToCPU "i386" = Just $ Intel $ I386CPU
descToCPU "i486" = Just $ Intel $ I486CPU
descToCPU "i586" = Just $ Intel $ I586CPU
descToCPU "pentium" = Just $ Intel $ I586CPU
descToCPU "pentium-mmx" = Just $ Intel $ PentiumMMX
descToCPU "pentiumpro" = Just $ Intel $ PentiumPro
descToCPU "i686" = Just $ Intel $ PentiumPro
descToCPU "pentium2" = Just $ Intel $ Pentium2
descToCPU "pentium3" = Just $ Intel $ Pentium3
descToCPU "pentium3m" = Just $ Intel $ Pentium3M
descToCPU "pentium-m" = Just $ Intel $ PentiumM
descToCPU "pentium4" = Just $ Intel $ Pentium4
descToCPU "pentium4m" = Just $ Intel $ Pentium4M
descToCPU "prescott" = Just $ Intel $ Prescott
descToCPU "nocona" = Just $ Intel $ NoCona
descToCPU "core2" = Just $ Intel $ Core2
descToCPU "nehalem" = Just $ Intel $ Nehalem
descToCPU "westmere" = Just $ Intel $ Westmere
descToCPU "sandybridge" = Just $ Intel $ Sandybridge
descToCPU "ivybridge" = Just $ Intel $ Ivybridge
descToCPU "haswell" = Just $ Intel $ Haswell
descToCPU "bonnell" = Just $ Intel $ Bonnell
descToCPU "silvermont" = Just $ Intel $ Silvermont
descToCPU "broadwell" = Just $ Intel $ Broadwell
descToCPU _ = Nothing
intelCPUFeatures :: IntelCPU -> [IntelFeature]
intelCPUFeatures I386CPU = []
intelCPUFeatures I486CPU = []
intelCPUFeatures I586CPU = []
intelCPUFeatures PentiumMMX = [MMX]
intelCPUFeatures PentiumPro = [MMX]
intelCPUFeatures I686CPU = [MMX]
intelCPUFeatures Pentium2 = [MMX]
intelCPUFeatures Pentium3 = [MMX, SSE]
intelCPUFeatures Pentium3M = [MMX, SSE]
intelCPUFeatures PentiumM = [MMX, SSE, SSE2]
intelCPUFeatures Pentium4 = [MMX, SSE, SSE2]
intelCPUFeatures Pentium4M = [MMX, SSE, SSE2]
intelCPUFeatures Prescott = [MMX, SSE, SSE2, SSE3]
intelCPUFeatures NoCona = [MMX, SSE, SSE2, SSE3]
intelCPUFeatures Core2 = [MMX, SSE, SSE2, SSE3, SSSE3]
intelCPUFeatures Nehalem = [MMX, SSE, SSE2, SSE3, SSSE3, SSE4, SSE41, SSE42]
intelCPUFeatures Westmere = [MMX, SSE, SSE2, SSE3, SSSE3, SSE4, SSE41, SSE42]
intelCPUFeatures Sandybridge = [MMX, SSE, SSE2, SSE3, SSSE3, SSE4, SSE41, SSE42, AVX1]
intelCPUFeatures Ivybridge = [MMX, SSE, SSE2, SSE3, SSSE3, SSE4, SSE41, SSE42, AVX1, ERMSB]
intelCPUFeatures Haswell = [MMX, SSE, SSE2, SSE3, SSSE3, SSE4, SSE41, SSE42, AVX1, ERMSB, AVX2]
intelCPUFeatures Bonnell = [MMX, SSE, SSE2, SSE3, SSSE3, SSE4, SSE41, SSE42, AVX1, ERMSB, AVX2]
intelCPUFeatures Silvermont = [MMX, SSE, SSE2, SSE3, SSSE3, SSE4, SSE41, SSE42, AVX1, ERMSB, AVX2]
intelCPUFeatures Broadwell = [MMX, SSE, SSE2, SSE3, SSSE3, SSE4, SSE41, SSE42, AVX1, ERMSB, AVX2]
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