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comparison include/llvm/BinaryFormat/XCOFF.h @ 148:63bd29f05246

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merged
author Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date Wed, 14 Aug 2019 19:46:37 +0900
parents c2174574ed3a
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146:3fc4d5c3e21e 148:63bd29f05246
1 //===-- llvm/BinaryFormat/XCOFF.h - The XCOFF file format -------*- C++/-*-===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 // This file defines manifest constants for the XCOFF object file format.
10 //
11 //===----------------------------------------------------------------------===//
12
13 #ifndef LLVM_BINARYFORMAT_XCOFF_H
14 #define LLVM_BINARYFORMAT_XCOFF_H
15
16 #include <cstdint>
17
18 namespace llvm {
19 namespace XCOFF {
20
21 // Constants used in the XCOFF definition.
22 enum { NameSize = 8 };
23 enum ReservedSectionNum { N_DEBUG = -2, N_ABS = -1, N_UNDEF = 0 };
24
25 // x_smclas field of x_csect from system header: /usr/include/syms.h
26 /// Storage Mapping Class definitions.
27 enum StorageMappingClass {
28 // READ ONLY CLASSES
29 XMC_PR = 0, ///< Program Code
30 XMC_RO = 1, ///< Read Only Constant
31 XMC_DB = 2, ///< Debug Dictionary Table
32 XMC_GL = 6, ///< Global Linkage (Interfile Interface Code)
33 XMC_XO = 7, ///< Extended Operation (Pseudo Machine Instruction)
34 XMC_SV = 8, ///< Supervisor Call (32-bit process only)
35 XMC_SV64 = 17, ///< Supervisor Call for 64-bit process
36 XMC_SV3264 = 18, ///< Supervisor Call for both 32- and 64-bit processes
37 XMC_TI = 12, ///< Traceback Index csect
38 XMC_TB = 13, ///< Traceback Table csect
39
40 // READ WRITE CLASSES
41 XMC_RW = 5, ///< Read Write Data
42 XMC_TC0 = 15, ///< TOC Anchor for TOC Addressability
43 XMC_TC = 3, ///< General TOC item
44 XMC_TD = 16, ///< Scalar data item in the TOC
45 XMC_DS = 10, ///< Descriptor csect
46 XMC_UA = 4, ///< Unclassified - Treated as Read Write
47 XMC_BS = 9, ///< BSS class (uninitialized static internal)
48 XMC_UC = 11, ///< Un-named Fortran Common
49
50 XMC_TL = 20, ///< Initialized thread-local variable
51 XMC_UL = 21, ///< Uninitialized thread-local variable
52 XMC_TE = 22 ///< Symbol mapped at the end of TOC
53 };
54
55 // Flags for defining the section type. Used for the s_flags field of
56 // the section header structure. Defined in the system header `scnhdr.h`.
57 enum SectionTypeFlags {
58 STYP_PAD = 0x0008,
59 STYP_DWARF = 0x0010,
60 STYP_TEXT = 0x0020,
61 STYP_DATA = 0x0040,
62 STYP_BSS = 0x0080,
63 STYP_EXCEPT = 0x0100,
64 STYP_INFO = 0x0200,
65 STYP_TDATA = 0x0400,
66 STYP_TBSS = 0x0800,
67 STYP_LOADER = 0x1000,
68 STYP_DEBUG = 0x2000,
69 STYP_TYPCHK = 0x4000,
70 STYP_OVRFLO = 0x8000
71 };
72
73 // STORAGE CLASSES, n_sclass field of syment.
74 // The values come from `storclass.h` and `dbxstclass.h`.
75 enum StorageClass : uint8_t {
76 // Storage classes used for symbolic debugging symbols.
77 C_FILE = 103, // File name
78 C_BINCL = 108, // Beginning of include file
79 C_EINCL = 109, // Ending of include file
80 C_GSYM = 128, // Global variable
81 C_STSYM = 133, // Statically allocated symbol
82 C_BCOMM = 135, // Beginning of common block
83 C_ECOMM = 137, // End of common block
84 C_ENTRY = 141, // Alternate entry
85 C_BSTAT = 143, // Beginning of static block
86 C_ESTAT = 144, // End of static block
87 C_GTLS = 145, // Global thread-local variable
88 C_STTLS = 146, // Static thread-local variable
89
90 // Storage classes used for DWARF symbols.
91 C_DWARF = 112, // DWARF section symbol
92
93 // Storage classes used for absolute symbols.
94 C_LSYM = 129, // Automatic variable allocated on stack
95 C_PSYM = 130, // Argument to subroutine allocated on stack
96 C_RSYM = 131, // Register variable
97 C_RPSYM = 132, // Argument to function or procedure stored in register
98 C_ECOML = 136, // Local member of common block
99 C_FUN = 142, // Function or procedure
100
101 // Storage classes used for undefined external symbols or
102 // symbols of general sections.
103 C_EXT = 2, // External symbol
104 C_WEAKEXT = 111, // Weak external symbol
105
106 // Storage classes used for symbols of general sections.
107 C_NULL = 0,
108 C_STAT = 3, // Static
109 C_BLOCK = 100, // ".bb" or ".eb"
110 C_FCN = 101, // ".bf" or ".ef"
111 C_HIDEXT = 107, // Un-named external symbol
112 C_INFO = 110, // Comment string in .info section
113 C_DECL = 140, // Declaration of object (type)
114
115 // Storage classes - Obsolete/Undocumented.
116 C_AUTO = 1, // Automatic variable
117 C_REG = 4, // Register variable
118 C_EXTDEF = 5, // External definition
119 C_LABEL = 6, // Label
120 C_ULABEL = 7, // Undefined label
121 C_MOS = 8, // Member of structure
122 C_ARG = 9, // Function argument
123 C_STRTAG = 10, // Structure tag
124 C_MOU = 11, // Member of union
125 C_UNTAG = 12, // Union tag
126 C_TPDEF = 13, // Type definition
127 C_USTATIC = 14, // Undefined static
128 C_ENTAG = 15, // Enumeration tag
129 C_MOE = 16, // Member of enumeration
130 C_REGPARM = 17, // Register parameter
131 C_FIELD = 18, // Bit field
132 C_EOS = 102, // End of structure
133 C_LINE = 104,
134 C_ALIAS = 105, // Duplicate tag
135 C_HIDDEN = 106, // Special storage class for external
136 C_EFCN = 255, // Physical end of function
137
138 // Storage classes - reserved
139 C_TCSYM = 134 // Reserved
140 };
141
142 enum SymbolType {
143 XTY_ER = 0, ///< External reference.
144 XTY_SD = 1, ///< Csect definition for initialized storage.
145 XTY_LD = 2, ///< Label definition.
146 ///< Defines an entry point to an initialized csect.
147 XTY_CM = 3 ///< Common csect definition. For uninitialized storage.
148 };
149
150 } // end namespace XCOFF
151 } // end namespace llvm
152
153 #endif