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
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
|
-- COFF definitions.
-- Copyright (C) 2006 Tristan Gingold
--
-- GHDL is free software; you can redistribute it and/or modify it under
-- the terms of the GNU General Public License as published by the Free
-- Software Foundation; either version 2, or (at your option) any later
-- version.
--
-- GHDL is distributed in the hope that it will be useful, but WITHOUT ANY
-- WARRANTY; without even the implied warranty of MERCHANTABILITY or
-- FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
-- for more details.
--
-- You should have received a copy of the GNU General Public License
-- along with GCC; see the file COPYING. If not, write to the Free
-- Software Foundation, 59 Temple Place - Suite 330, Boston, MA
-- 02111-1307, USA.
with Interfaces; use Interfaces;
with System; use System;
package Coff is
type Filehdr is record
F_Magic : Unsigned_16; -- Magic number.
F_Nscns : Unsigned_16; -- Number of sections.
F_Timdat : Unsigned_32; -- Time and date stamp.
F_Symptr : Unsigned_32; -- File pointer to symtab.
F_Nsyms : Unsigned_32; -- Number of symtab entries.
F_Opthdr : Unsigned_16; -- Size of optionnal header.
F_Flags : Unsigned_16; -- Flags;
end record;
-- Size of Filehdr.
Filehdr_Size : constant Natural := Filehdr'Size / Storage_Unit;
-- Magic numbers.
I386magic : constant Unsigned_16 := 16#014c#;
-- Flags of file header.
-- Relocation info stripped from file.
F_Relflg : constant Unsigned_16 := 16#0001#;
-- File is executable (no unresolved symbols).
F_Exec : constant Unsigned_16 := 16#0002#;
-- Line numbers stripped from file.
F_Lnno : constant Unsigned_16 := 16#0004#;
-- Local symbols stripped from file.
F_Lsyms : constant Unsigned_16 := 16#0008#;
type Scnhdr is record
S_Name : String (1 .. 8); -- Section name.
S_Paddr : Unsigned_32; -- Physical address.
S_Vaddr : Unsigned_32; -- Virtual address.
S_Size : Unsigned_32; -- Section size.
S_Scnptr : Unsigned_32; -- File pointer to raw section data.
S_Relptr : Unsigned_32; -- File pointer to relocation data.
S_Lnnoptr : Unsigned_32; -- File pointer to line number data.
S_Nreloc : Unsigned_16; -- Number of relocation entries.
S_Nlnno : Unsigned_16; -- Number of line number entries.
S_Flags : Unsigned_32; -- Flags.
end record;
Scnhdr_Size : constant Natural := Scnhdr'Size / Storage_Unit;
-- section contains text only.
STYP_TEXT : constant Unsigned_32 := 16#0020#;
-- section contains data only.
STYP_DATA : constant Unsigned_32 := 16#0040#;
-- section contains bss only.
STYP_BSS : constant Unsigned_32 := 16#0080#;
type Strent_Type is record
E_Zeroes : Unsigned_32;
E_Offset : Unsigned_32;
end record;
type Sym_Name (Inline : Boolean := True) is record
case Inline is
when True =>
E_Name : String (1 .. 8);
when False =>
E : Strent_Type;
end case;
end record;
pragma Unchecked_Union (Sym_Name);
for Sym_Name'Size use 64;
type Syment is record
E : Sym_Name; -- Name of the symbol
E_Value : Unsigned_32; -- Value
E_Scnum : Unsigned_16; -- Section
E_Type : Unsigned_16;
E_Sclass : Unsigned_8;
E_Numaux : Unsigned_8;
end record;
Symesz : constant Natural := 18;
for Syment'Size use Symesz * Storage_Unit;
-- An undefined (extern) symbol.
N_UNDEF : constant Unsigned_16 := 16#00_00#;
-- An absolute symbol (e_value is a constant, not an address).
N_ABS : constant Unsigned_16 := 16#Ff_Ff#;
-- A debugging symbol.
N_DEBUG : constant Unsigned_16 := 16#Ff_Fe#;
C_NULL : constant Unsigned_8 := 0;
C_AUTO : constant Unsigned_8 := 1;
C_EXT : constant Unsigned_8 := 2;
C_STAT : constant Unsigned_8 := 3;
C_REG : constant Unsigned_8 := 4;
C_EXTDEF : constant Unsigned_8 := 5;
C_LABEL : constant Unsigned_8 := 6;
C_ULABEL : constant Unsigned_8 := 7;
C_MOS : constant Unsigned_8 := 8;
C_ARG : constant Unsigned_8 := 9;
C_STRTAG : constant Unsigned_8 := 10;
C_MOU : constant Unsigned_8 := 11;
C_UNTAG : constant Unsigned_8 := 12;
C_TPDEF : constant Unsigned_8 := 13;
C_USTATIC : constant Unsigned_8 := 14;
C_ENTAG : constant Unsigned_8 := 15;
C_MOE : constant Unsigned_8 := 16;
C_REGPARM : constant Unsigned_8 := 17;
C_FIELD : constant Unsigned_8 := 18;
C_AUTOARG : constant Unsigned_8 := 19;
C_LASTENT : constant Unsigned_8 := 20;
C_BLOCK : constant Unsigned_8 := 100;
C_FCN : constant Unsigned_8 := 101;
C_EOS : constant Unsigned_8 := 102;
C_FILE : constant Unsigned_8 := 103;
C_LINE : constant Unsigned_8 := 104;
C_ALIAS : constant Unsigned_8 := 105;
C_HIDDEN : constant Unsigned_8 := 106;
C_EFCN : constant Unsigned_8 := 255;
-- Textual description of sclass.
type Const_String_Acc is access constant String;
type Sclass_Desc_Type is record
Name : Const_String_Acc;
Meaning : Const_String_Acc;
end record;
type Sclass_Desc_Array_Type is array (Unsigned_8) of Sclass_Desc_Type;
Sclass_Desc : constant Sclass_Desc_Array_Type;
type Auxent_File (Inline : Boolean := True) is record
case Inline is
when True =>
X_Fname : String (1 .. 14);
when False =>
X_N : Strent_Type;
end case;
end record;
pragma Unchecked_Union (Auxent_File);
type Auxent_Scn is record
X_Scnlen : Unsigned_32;
X_Nreloc : Unsigned_16;
X_Nlinno : Unsigned_16;
end record;
-- Relocation.
type Reloc is record
R_Vaddr : Unsigned_32;
R_Symndx : Unsigned_32;
R_Type : Unsigned_16;
end record;
Relsz : constant Natural := Reloc'Size / Storage_Unit;
Reloc_Rel32 : constant Unsigned_16 := 20;
Reloc_Addr32 : constant Unsigned_16 := 6;
private
subtype S is String;
Sclass_Desc : constant Sclass_Desc_Array_Type :=
(C_NULL => (new S'("C_NULL"), new S'("No entry")),
C_AUTO => (new S'("C_AUTO"), new S'("Automatic variable")),
C_EXT => (new S'("C_EXT"), new S'("External/public symbol")),
C_STAT => (new S'("C_STAT"), new S'("static (private) symbol")),
C_REG => (new S'("C_REG"), new S'("register variable")),
C_EXTDEF => (new S'("C_EXTDEF"), new S'("External definition")),
C_LABEL => (new S'("C_LABEL"), new S'("label")),
C_ULABEL => (new S'("C_ULABEL"), new S'("undefined label")),
C_MOS => (new S'("C_MOS"), new S'("member of structure")),
C_ARG => (new S'("C_ARG"), new S'("function argument")),
C_STRTAG => (new S'("C_STRTAG"), new S'("structure tag")),
C_MOU => (new S'("C_MOU"), new S'("member of union")),
C_UNTAG => (new S'("C_UNTAG"), new S'("union tag")),
C_TPDEF => (new S'("C_TPDEF"), new S'("type definition")),
C_USTATIC => (new S'("C_USTATIC"), new S'("undefined static")),
C_ENTAG => (new S'("C_ENTAG"), new S'("enumaration tag")),
C_MOE => (new S'("C_MOE"), new S'("member of enumeration")),
C_REGPARM => (new S'("C_REGPARM"), new S'("register parameter")),
C_FIELD => (new S'("C_FIELD"), new S'("bit field")),
C_AUTOARG => (new S'("C_AUTOARG"), new S'("auto argument")),
C_LASTENT => (new S'("C_LASTENT"), new S'("dummy entry (end of block)")),
C_BLOCK => (new S'("C_BLOCK"), new S'("beginning or end of block")),
C_FCN => (new S'("C_FCN"), new S'("beginning or end of function")),
C_EOS => (new S'("C_EOS"), new S'("end of structure")),
C_FILE => (new S'("C_FILE"), new S'("file name")),
C_LINE => (new S'("C_LINE"),
new S'("line number, reformatted as symbol")),
C_ALIAS => (new S'("C_ALIAS"), new S'("duplicate tag")),
C_HIDDEN => (new S'("C_HIDDEN"),
new S'("ext symbol in dmert public lib")),
C_EFCN => (new S'("C_EFCN"), new S'("physical end of function")),
others => (null, null));
end Coff;
|
