syms.h - scc - simple c99 compiler
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syms.h (2159B)
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1 /* This file is inspired in the book "Understanding and using COFF" */
2
3 #define SYMNMLEN 8
4
5 struct syment {
6 union {
7 char _n_name[SYMNMLEN]; /* symbol name */
8 struct {
9 long _n_zeroes; /* if _n_name[0-3] == 0 */
10 long _n_offset; /* offset into string table */
11 } _n_n;
12 } _n;
13 long n_value; /* value of symbol */
14 short n_scnum; /* section number */
15 unsigned short n_type; /* type and derived type */
16 char n_sclass; /* storage class */
17 char n_numaux; /* number of aux. entries */
18 };
19
20 #define SYMENT struct syment
21 #define SYMESZ 18
22
23 #define n_name _n._n_name
24 #define n_zeroes _n._n_n._n_zeroes
25 #define n_offset _n._n_n._n_offset
26
27 /* Special n_scnum values */
28 #define N_DEBUG -2
29 #define N_ABS -1
30 #define N_UNDEF 0
31 #define N_SCNUM(x) ((x) > 0)
32
33 /* basic types */
34 #define T_NULL 0
35 #define T_VOID 1
36 #define T_CHAR 2
37 #define T_SHORT 3
38 #define T_INT 4
39 #define T_LONG 5
40 #define T_FLOAT 6
41 #define T_DOUBLE 7
42 #define T_STRUCT 8
43 #define T_UNION 9
44 #define T_ENUM 10
45 #define T_MOE 11
46 #define T_UCHAR 12
47 #define T_USHORT 13
48 #define T_UINT 14
49 #define T_ULONG 15
50 #define T_LNGDBL 16
51
52 /* derivated types */
53 #define DT_NON 0
54 #define DT_PTR 1
55 #define DT_FCN 2
56 #define DT_ARY 3
57
58 /* storage class */
59 #define C_NULL 0
60 #define C_AUTO 1
61 #define C_EXT 2
62 #define C_STAT 3
63 #define C_REG 4
64 #define C_EXTDEF 5
65 #define C_LABEL 6
66 #define C_ULABEL 7
67 #define C_MOS 8
68 #define C_ARG 9
69 #define C_STRTAG 10
70 #define C_MOU 11
71 #define C_UNTAG 12
72 #define C_TPDEF 13
73 #define C_USTATIC 14
74 #define C_ENTAG 15
75 #define C_MOE 16
76 #define C_REGPARM 17
77 #define C_FIELD 18
78 #define C_AUTOARG 19
79 #define C_LASTENT 20
80 #define C_BLOCK 100
81 #define C_FCN 101
82 #define C_EOS 102
83 #define C_FILE 103
84 #define C_LINE 104
85 #define C_ALIAS 105
86 #define C_HIDDEN 106
87 #define C_WEAKEXT 127
88 #define C_EFCN 255