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1.1 root 1: /* Table of DBX symbol codes for the GNU system.
2: Copyright (C) 1988 Free Software Foundation, Inc.
3:
4: This program is free software; you can redistribute it and/or modify
5: it under the terms of the GNU General Public License as published by
6: the Free Software Foundation; either version 1, or (at your option)
7: any later version.
8:
9: This program is distributed in the hope that it will be useful,
10: but WITHOUT ANY WARRANTY; without even the implied warranty of
11: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12: GNU General Public License for more details.
13:
14: You should have received a copy of the GNU General Public License
15: along with this program; if not, write to the Free Software
16: Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
17:
18: /* This contains contribution from Cygnus Support. */
19:
20: /* Global variable. Only the name is significant.
21: To find the address, look in the corresponding external symbol. */
22: __define_stab (N_GSYM, 0x20, "GSYM")
23:
24: /* Function name for BSD Fortran. Only the name is significant.
25: To find the address, look in the corresponding external symbol. */
26: __define_stab (N_FNAME, 0x22, "FNAME")
27:
28: /* Function name or text-segment variable for C. Value is its address.
29: Desc is supposedly starting line number, but GCC doesn't set it
30: and DBX seems not to miss it. */
31: __define_stab (N_FUN, 0x24, "FUN")
32:
33: /* Data-segment variable with internal linkage. Value is its address. */
34: __define_stab (N_STSYM, 0x26, "STSYM")
35:
36: /* BSS-segment variable with internal linkage. Value is its address. */
37: __define_stab (N_LCSYM, 0x28, "LCSYM")
38:
39: /* Name of main routine. Only the name is significant.
40: This is not used in C. */
41: __define_stab (N_MAIN, 0x2a, "MAIN")
42:
43: /* Register variable. Value is number of register. */
44: __define_stab (N_RSYM, 0x40, "RSYM")
45:
46: /* Structure or union element. Value is offset in the structure. */
47: __define_stab (N_SSYM, 0x60, "SSYM")
48:
49: /* Parameter variable. Value is offset from argument pointer.
50: (On most machines the argument pointer is the same as the frame pointer. */
51: __define_stab (N_PSYM, 0xa0, "PSYM")
52:
53: /* Automatic variable in the stack. Value is offset from frame pointer.
54: Also used for type descriptions. */
55: __define_stab (N_LSYM, 0x80, "LSYM")
56:
57: /* Alternate entry point. Value is its address. */
58: __define_stab (N_ENTRY, 0xa4, "ENTRY")
59:
60: /* Name of main source file.
61: Value is starting text address of the compilation. */
62: __define_stab (N_SO, 0x64, "SO")
63:
64: /* Name of sub-source file.
65: Value is starting text address of the compilation. */
66: __define_stab (N_SOL, 0x84, "SOL")
67:
68: /* Line number in text segment. Desc is the line number;
69: value is corresponding address. */
70: __define_stab (N_SLINE, 0x44, "SLINE")
71: /* Similar, for data segment. */
72: __define_stab (N_DSLINE, 0x46, "DSLINE")
73: /* Similar, for bss segment. */
74: __define_stab (N_BSLINE, 0x48, "BSLINE")
75:
76: /* Beginning of an include file. Only Sun uses this.
77: In an object file, only the name is significant.
78: The Sun linker puts data into some of the other fields. */
79: __define_stab (N_BINCL, 0x82, "BINCL")
80: /* End of an include file. No name.
81: These two act as brackets around the file's output.
82: In an object file, there is no significant data in this entry.
83: The Sun linker puts data into some of the fields. */
84: __define_stab (N_EINCL, 0xa2, "EINCL")
85: /* Place holder for deleted include file.
86: This appears only in output from the Sun linker. */
87: __define_stab (N_EXCL, 0xc2, "EXCL")
88:
89: /* Beginning of lexical block.
90: The desc is the nesting level in lexical blocks.
91: The value is the address of the start of the text for the block.
92: The variables declared inside the block *precede* the N_LBRAC symbol. */
93: __define_stab (N_LBRAC, 0xc0, "LBRAC")
94: /* End of a lexical block. Desc matches the N_LBRAC's desc.
95: The value is the address of the end of the text for the block. */
96: __define_stab (N_RBRAC, 0xe0, "RBRAC")
97:
98: /* Begin named common block. Only the name is significant. */
99: __define_stab (N_BCOMM, 0xe2, "BCOMM")
100: /* Begin named common block. Only the name is significant
101: (and it should match the N_BCOMM). */
102: __define_stab (N_ECOMM, 0xe4, "ECOMM")
103: /* End common (local name): value is address.
104: I'm not sure how this is used. */
105: __define_stab (N_ECOML, 0xe8, "ECOML")
106: /* Second symbol entry containing a length-value for the preceding entry.
107: The value is the length. */
108: __define_stab (N_LENG, 0xfe, "LENG")
109:
110: /* Global symbol in Pascal.
111: Supposedly the value is its line number; I'm skeptical. */
112: __define_stab (N_PC, 0x30, "PC")
113:
114: /* Modula-2 compilation unit. Can someone say what info it contains? */
115: __define_stab (N_M2C, 0x42, "M2C")
116: /* Modula-2 scope information. Can someone say what info it contains? */
117: __define_stab (N_SCOPE, 0xc4, "SCOPE")
118:
119: /* Sun's source-code browser stabs. ?? Don't know what the fields are.
120: Supposedly the field is "path to associated .cb file". */
121: /* This conflicts with the definition of N_BSLINE. */
122: __define_stab (N_BROWS, 0x48, "BROWS")
123:
124: /* GNU C++ exception stabs. */
125:
126: /* GNU C++ `catch' clause. Value is its address. Desc is nonzero if
127: this entry is immediately followed by a CAUGHT stab saying what exception
128: was caught. Multiple CAUGHT stabs means that multiple exceptions
129: can be caught here. If Desc is 0, it means all exceptions are caught
130: here. */
131: __define_stab (N_CATCH, 0x54, "CATCH")
132:
133: /* The above information, in matrix format.
134:
135: STAB MATRIX
136: _________________________________________________
137: | 00 - 1F are not dbx stab symbols |
138: | Entries with bits 01 set are external symbols |
139: | N_UNDEF | N_ABS | N_TEXT | N_DATA |
140: | N_BSS | N_COMM | | N_FN |
141: |_______________________________________________|
142: | 20 GSYM | 22 FNAME | 24 FUN | 26 STSYM |
143: | 28 LCSYM | 2A MAIN | 2C | 2E |
144: | 30 PC | 32 | 34 | 36 |
145: | 38 | 3A | 3C | 3E |
146: | 40 RSYM | 42 M2C | 44 SLINE | 46 DSLINE |
147: | 48 BROWS/BSLINE | 4A | 4C | 4E |
148: | 50 EHDECL | 52 | 54 CATCH | 56 |
149: | 58 | 5A | 5C | 5E |
150: | 60 SSYM | 62 | 64 SO | 66 |
151: | 68 | 6A | 6C | 6E |
152: | 70 | 72 | 74 | 76 |
153: | 78 | 7A | 7C | 7E |
154: | 80 LSYM | 82 BINCL | 84 SOL | 86 |
155: | 88 | 8A | 8C | 8E |
156: | 90 | 92 | 94 | 96 |
157: | 98 | 9A | 9C | 9E |
158: | A0 PSYM | A2 EINCL | A4 ENTRY | A6 |
159: | A8 | AA | AC | AE |
160: | B0 | B2 | B4 | B6 |
161: | B8 | BA | BC | BE |
162: | C0 LBRAC | C2 EXCL | C4 SCOPE | C6 |
163: | C8 | CA | CC | CE |
164: | D0 | D2 | D4 | D6 |
165: | D8 | DA | DC | DE |
166: | E0 RBRAC | E2 BCOMM | E4 ECOMM | E6 |
167: | E8 ECOML | EA | EC | EE |
168: | F0 | F2 | F4 | F6 |
169: | F8 | FA | FC | FE LENG |
170: +-----------------------------------------------+
171:
172: */
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