1 /***************************************************************************
5 ----------------------------------------------------------------------------
7 FUNCTION: Header file for symbol table routines
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11 MODULE STATUS: production
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15 GENEALOGY: Created 930629 by E. B. Jackson
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19 DESIGNED BY: Bruce Jackson
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31 950227 Added header and declarations for ls_print_findsym_error(),
32 ls_get_double(), and ls_get_double() routines. EBJ
34 950302 Added structure for symbol description. EBJ
36 950306 Added ls_get_sym_val() and ls_set_sym_val() routines.
37 This is now the production version. EBJ
43 Revision 1.1 1999/04/05 21:32:45 curt
46 Revision 1.3 1998/08/06 12:46:40 curt
49 Revision 1.2 1998/01/22 02:59:34 curt
50 Changed #ifdef FILE_H to #ifdef _FILE_H
52 Revision 1.1 1997/05/29 00:10:00 curt
53 Initial Flight Gear revision.
55 * Revision 1.9 1995/03/07 12:52:33 bjax
56 * This production version now specified ls_get_sym_val() and ls_put_sym_val().
58 * Revision 1.6.1.2 1995/03/06 18:45:41 bjax
59 * Added def'n of ls_get_sym_val() and ls_set_sym_val(); changed symbol_rec
60 * Addr field from void * to char *.
63 * Revision 1.6.1.1 1995/03/03 01:17:44 bjax
64 * Experimental version with just ls_get_double and ls_set_double() routines.
66 * Revision 1.6 1995/02/27 19:50:49 bjax
67 * Added header and declarations for ls_print_findsym_error(),
68 * ls_get_double(), and ls_set_double(). EBJ
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91 --------------------------------------------------------------------------*/
99 #define SYM_NOT_LOADED -2
100 #define SYM_UNEXPECTED_ERR -1
102 #define SYM_OPEN_ERR 1
103 #define SYM_NO_SYMS 2
104 #define SYM_MOD_NOT_FOUND 3
105 #define SYM_VAR_NOT_FOUND 4
106 #define SYM_NOT_SCALAR 5
107 #define SYM_NOT_STATIC 6
108 #define SYM_MEMORY_ERR 7
109 #define SYM_UNMATCHED_PAREN 8
110 #define SYM_BAD_SYNTAX 9
111 #define SYM_INDEX_BOUNDS_ERR 10
113 typedef enum {Unknown, Char, UChar, SHint, USHint, Sint, Uint, Slng, Ulng, flt, dbl} vartype;
115 typedef char SYMBOL_NAME[64];
116 typedef vartype SYMBOL_TYPE;
122 SYMBOL_NAME Mod_Name;
123 SYMBOL_NAME Par_Name;
124 SYMBOL_TYPE Par_Type;
130 extern int ls_findsym( const char *modname, const char *varname,
131 char **addr, vartype *vtype );
133 extern void ls_print_findsym_error(int result,
137 extern double ls_get_double(vartype sym_type, void *addr );
139 extern void ls_set_double(vartype sym_type, void *addr, double value );
141 extern double ls_get_sym_val( symbol_rec *symrec, int *error );
143 /* This routine attempts to return the present value of the symbol
144 described in symbol_rec. If Addr is non-zero, the value of that
145 location, interpreted as type double, will be returned. If Addr
146 is zero, and Mod_Name and Par_Name are both not null strings,
147 the ls_findsym() routine is used to try to obtain the address
148 by looking at debugger symbol tables in the executable image, and
149 the value of the double contained at that address is returned,
150 and the symbol record is updated to contain the address of that
151 symbol. If an error is discovered, 'error' will be non-zero and
152 and error message is printed on stderr. */
154 extern void ls_set_sym_val( symbol_rec *symrec, double value );
156 /* This routine sets the value of a double at the location pointed
157 to by the symbol_rec's Addr field, if Addr is non-zero. If Addr
158 is zero, and Mod_Name and Par_Name are both not null strings,
159 the ls_findsym() routine is used to try to obtain the address
160 by looking at debugger symbol tables in the executable image, and
161 the value of the double contained at that address is returned,
162 and the symbol record is updated to contain the address of that
163 symbol. If an error is discovered, 'error' will be non-zero and
164 and error message is printed on stderr. */
167 #endif /* _LS_SYM_H */