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1.1 root 1: /* @(#)sym.h 2.3 */
2: #define isymNil -1L
3: #define isym0 0L
4:
5: #define bitHigh (0x80000000)
6:
7: /* magic number definitions */
8: #define magicImpure 0407 /* impure format */
9: #define magicReadOnly 0410 /* read-only text */
10: #define magicDemand 0413 /* demand load format */
11: #define magicLpd 0401 /* lpd (UNIX/RT) */
12: #define magicSplit 0411 /* separated I&D */
13: #define magicOverlay 0405 /* overlay */
14:
15: #ifdef SYSIII
16: #ifndef REGULUS
17:
18: /* stuff directly related to the symbol table */
19: struct exec { /* a.out header */
20: short a_magic; /* magic number */
21: uint a_text; /* size of text segment */
22: uint a_data; /* size of initialized data */
23: uint a_bss; /* size of uninitialized data */
24: uint a_syms; /* size of symbol table */
25: uint a_entry; /* entry point */
26: uint a_stamp; /* system environment stamp */
27: uint a_flag; /* relocation info stripped */
28: };
29:
30: /* ***** in invocation of BADMAG macro, argument should not be a function.***/
31: #define FBadMagic(X) (X.a_magic!=magicReadOnly && X.a_magic!=magicImpure \
32: && X.a_magic!=magicLpd && X.a_magic!=magicSplit \
33: && X.a_magic!=magicOverlay)
34:
35: #define CbTextOffset(x) (cbEXECR)
36: #define CbSymOffset(x) ((x).a_text + (x).a_data + CbTextOffset(x))
37:
38: /* values for type flag */
39: #define N_UNDF 0 /* undefined */
40: #define N_ABS 01 /* absolute */
41: #define N_TEXT 02 /* text symbol */
42: #define N_DATA 03 /* data symbol */
43: #define N_BSS 04 /* bss symbol */
44: #define N_TYPE 037 /* gets JUST the type bits (removes N_EXT) */
45: #define N_REG 024 /* register name */
46: #define N_FN 037 /* file name symbol */
47: #define N_EXT 040 /* external bit, or'ed in */
48:
49: typedef struct SYMS { /* same record as `nlist, but with my names */
50: char sbSym[8]; /* symbol name */
51: short type; /* type flag */
52: uint value; /* something appropriate to the type */
53: } SYMR, *pSYMR;
54: #define cbSYMR sizeof(SYMR)
55:
56: /* then following is replaced by a procedure for BSD41 - see sym.c */
57: #define SbInCore(sb) (sb)
58: /* end of normal SYSIII */
59:
60: #else
61:
62: /* stuff directly related to the symbol table */
63: struct exec { /* a.out header */
64: short a_magic; /* magic number */
65: long a_text; /* size of text segment */
66: long a_data; /* size of initialized data */
67: long a_bss; /* size of uninitialized data */
68: long a_syms; /* size of symbol table */
69: long a_stksize; /* stack size */
70: long a_entry; /* entry point */
71: short a_flag; /* relocation info stripped */
72: };
73:
74: #define A_MAGIC1 0x601a /* normal */
75: #define A_MAGIC0 0x601c /* shared text - 2k boundaries */
76: #define A_MAGIC2 0x601d /* separated I&D */
77: #define A_MAGIC3 0x601e /* shared text - 4k boundaries */
78: /* ***** in invocation of BADMAG macro, argument should not be a function.***/
79: #define FBadMagic(X) (X.a_magic!=A_MAGIC1 && X.a_magic!=A_MAGIC2 \
80: && X.a_magic!=A_MAGIC3 && X.a_magic!=A_MAGIC0)
81:
82: #define CbTextOffset(x) (cbEXECR)
83: #define CbSymOffset(x) (CbTextOffset(x) + (x).a_text + (x).a_data)
84:
85: /* values for type flag */
86: #define N_UNDF 0 /* undefined */
87: #define N_ABS 040000 /* absolute */
88: #define N_TEXT 01000 /* text symbol */
89: #define N_DATA 02000 /* data symbol */
90: #define N_BSS 0400 /* bss symbol */
91: #define N_TYPE 053600 /* gets JUST the type bits (removes N_EXT) */
92: #define N_REG 010000 /* register name */
93: #define N_FN 0200 /* file name symbol */
94: #define N_EXT 020000 /* external bit, or'ed in */
95:
96: typedef struct SYMS { /* same record as `nlist, but with my names */
97: char sbSym[8]; /* symbol name */
98: short type; /* type flag */
99: ulong value; /* something appropriate to the type */
100: } SYMR, *pSYMR;
101: #define cbSYMR sizeof(SYMR)
102:
103: /* then following is replaced by a procedure for BSD41 - see sym.c */
104: #define SbInCore(sb) (sb)
105: /* end of REGULUS */
106: #endif
107: /* end of SYSIII stuff */
108: #endif
109:
110: #ifdef BSD41
111: extern char * SbInCore();
112:
113: struct exec {
114: long a_magic; /* magic number */
115: ulong a_text; /* size of text segment */
116: ulong a_data; /* size of initialized data */
117: ulong a_bss; /* size of uninitialized data */
118: ulong a_syms; /* size of symbol table */
119: ulong a_entry; /* entry point */
120: ulong a_trsize; /* size of text relocation */
121: ulong a_drsize; /* size of data relocation */
122: };
123:
124: #define FBadMagic(x) \
125: (((x).a_magic)!=magicImpure \
126: && ((x).a_magic)!=magicReadOnly \
127: && ((x).a_magic)!=magicDemand)
128:
129: #ifdef SUN
130: #define CbTextOffset(x) ((x).a_magic==magicDemand ? 2048 : cbEXECR)
131: #else
132: #define CbTextOffset(x) ((x).a_magic==magicDemand ? 1024 : cbEXECR)
133: #endif
134:
135: #define CbSymOffset(x) \
136: (CbTextOffset(x) + (x).a_text+(x).a_data + (x).a_trsize+(x).a_drsize)
137: #define CbStrOffset(x) (CbSymOffset(x) + (x).a_syms)
138:
139: typedef struct SYMS { /* berkeley `nlist', almost */
140: long sbSym; /* not an `sb', an index into string space */
141: uchar type; /* type flag, i.e. N_TEXT etc; see below */
142: char other; /* unused */
143: short desc; /* see <stab.h> */
144: ulong value; /* value of this symbol (or sdb offset) */
145: } SYMR, *pSYMR;
146: #define cbSYMR sizeof(SYMR)
147:
148: /*
149: * Simple values for n_type.
150: */
151: #define N_UNDF 0x0 /* undefined */
152: #define N_ABS 0x2 /* absolute */
153: #define N_TEXT 0x4 /* text */
154: #define N_DATA 0x6 /* data */
155: #define N_BSS 0x8 /* bss */
156: #define N_FN 0x1f /* file name symbol */
157:
158: #define N_EXT 01 /* external bit, or'ed in */
159: #define N_TYPE 0x1e /* mask for all the type bits */
160:
161: #define N_STAB 0xe0 /* if any of these bits set, a SDB entry */
162: /* end of BSD41 */
163: #endif
164:
165: #define symNil ((pSYMR)0)
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