1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
|
-- | A description of the platform we're compiling for.
--
module Platform (
Platform(..),
Arch(..),
OS(..),
ArmISA(..),
ArmISAExt(..),
ArmABI(..),
target32Bit,
isARM,
osElfTarget,
osMachOTarget,
platformUsesFrameworks,
platformBinariesAreStaticLibs,
)
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,
platformIsCrossCompiling :: 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
| ArchSPARC64
| ArchARM
{ armISA :: ArmISA
, armISAExt :: [ArmISAExt]
, armABI :: ArmABI
}
| ArchARM64
| ArchAlpha
| ArchMipseb
| ArchMipsel
| ArchJavaScript
deriving (Read, Show, Eq)
isARM :: Arch -> Bool
isARM (ArchARM {}) = True
isARM ArchARM64 = 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
| OSHurd
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 OSHurd = 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
|
