elf.low source code

1 //          Copyright Yazan Dabain 2014.
2 // Distributed under the Boost Software License, Version 1.0.
3 //    (See accompanying file LICENSE_1_0.txt or copy at
4 //          http://www.boost.org/LICENSE_1_0.txt)
5 
6 module elf.low;
7 
8 import elf.low32, elf.low64;
9 import elf.meta;
10 
11 import std.conv : to;
12 
13 alias ELF_Half = ELF64_Half;
14 alias ELF_Word = ELF64_Word;
15 alias ELF_SWord = ELF64_SWord;
16 alias ELF_XWord = ELF64_XWord;
17 alias ELF_Addr = ELF64_Addr;
18 alias ELF_Off = ELF64_Off;
19 alias ELF_Section = ELF64_Section;
20 
21 align(1) struct ELFIdent {
22 align(1):
23 	char mag0;
24 	char mag1;
25 	char mag2;
26 	char mag3;
27 	ubyte class_;
28 	ubyte data;
29 	ubyte version_;
30 	ubyte osabi;
31 	ubyte abiversion;
32 	ubyte[6] pad;
33 	ubyte nident;
34 }
35 
36 static assert(ELFIdent.sizeof == 16);
37 
38 struct Identifier {
39 	ELFIdent data;
40 
41 	FileClass fileClass() {
42 		return cast(FileClass) data.class_;
43 	}
44 
45 	DataEncoding dataEncoding() {
46 		return cast(DataEncoding) data.data;
47 	}
48 
49 	OSABI osABI() {
50 		return cast(OSABI) data.osabi;
51 	}
52 
53 	ubyte abiVersion() {
54 		return data.abiversion;
55 	}
56 }
57 
58 enum FileClass : ubyte {
59 	class32 = 1, class64 = 2,
60 }
61 
62 enum DataEncoding : ubyte {
63 	littleEndian = 1, bigEndian = 2,
64 }
65 
66 enum OSABI : ubyte {
67 	sysv = 0x00,
68 	hpux = 0x01,
69 	netBSD = 0x02,
70 	linux = 0x03,
71 	solaris = 0x06,
72 	aix = 0x07,
73 	irix = 0x08,
74 	freeBSD = 0x09,
75 	openBSD = 0x0C,
76 	standalone = 0xFF,
77 }
78 
79 enum ObjectFileType : ELF_Half {
80 	none = 0x0000,
81 	relocatable = 0x0001,
82 	executable = 0x0002,
83 	shared_ = 0x0003,
84 	core = 0x0004,
85 	lowOS = 0xFE00,
86 	highOS = 0xFEFF,
87 	lowProccessor = 0xFF00,
88 	highProcessor = 0xFFFF,
89 }
90 
91 enum SectionType : ELF_Word {
92 	null_ = 0x0000_0000,
93 	programBits = 0x0000_0001,
94 	symbolTable = 0x0000_0002,
95 	stringTable = 0x0000_0003,
96 	relocation = 0x0000_0004,
97 	symbolHashTable = 0x0000_0005,
98 	dynamicLinkingTable =	0x0000_0006,
99 	note = 0x0000_0007,
100 	noBits = 0x0000_0008,
101 	rel = 0x0000_0009,
102 	shlib = 0x0000_000A,
103 	dynamicLoaderSymbolTable = 0x0000_000B,
104 	lowOS = 0x6000_0000,
105 	highOS = 0x6FFF_FFFF,
106 	lowProcessor = 0x7000_0000,
107 	highProcessor = 0x7FFF_FFFF,
108 }
109 
110 // TODO: Review this
111 enum SectionFlag : ELF64_XWord {
112 	write = 0x0000_0001,
113 	alloc = 0x0000_0002,
114 	executable = 0x0000_0004,
115 	maskOS = 0x0F00_0000,
116 	maskProcessor = 0xF000_0000,
117 }
118 
119 enum TargetISA : ELF_Word {
120 	sparc = 0x02,
121 	x86 = 0x03,
122 	mips = 0x08,
123 	powerpc = 0x14,
124 	arm = 0x28,
125 	superh = 0x2A,
126 	ia64 = 0x32,
127 	x86_64 = 0x3E,
128 	aarch64 = 0xB7,
129 }