1 /***************************************************************************
5 ----------------------------------------------------------------------------
7 FUNCTION: Header file for symbol table routines
9 ----------------------------------------------------------------------------
11 MODULE STATUS: production
13 ----------------------------------------------------------------------------
15 GENEALOGY: Created 930629 by E. B. Jackson
17 ----------------------------------------------------------------------------
19 DESIGNED BY: Bruce Jackson
25 ----------------------------------------------------------------------------
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 1997/05/29 00:10:00 curt
44 Initial Flight Gear revision.
46 * Revision 1.9 1995/03/07 12:52:33 bjax
47 * This production version now specified ls_get_sym_val() and ls_put_sym_val().
49 * Revision 1.6.1.2 1995/03/06 18:45:41 bjax
50 * Added def'n of ls_get_sym_val() and ls_set_sym_val(); changed symbol_rec
51 * Addr field from void * to char *.
54 * Revision 1.6.1.1 1995/03/03 01:17:44 bjax
55 * Experimental version with just ls_get_double and ls_set_double() routines.
57 * Revision 1.6 1995/02/27 19:50:49 bjax
58 * Added header and declarations for ls_print_findsym_error(),
59 * ls_get_double(), and ls_set_double(). EBJ
62 ----------------------------------------------------------------------------
66 ----------------------------------------------------------------------------
70 ----------------------------------------------------------------------------
74 ----------------------------------------------------------------------------
78 ----------------------------------------------------------------------------
82 --------------------------------------------------------------------------*/
86 #define SYM_NOT_LOADED -2
87 #define SYM_UNEXPECTED_ERR -1
89 #define SYM_OPEN_ERR 1
91 #define SYM_MOD_NOT_FOUND 3
92 #define SYM_VAR_NOT_FOUND 4
93 #define SYM_NOT_SCALAR 5
94 #define SYM_NOT_STATIC 6
95 #define SYM_MEMORY_ERR 7
96 #define SYM_UNMATCHED_PAREN 8
97 #define SYM_BAD_SYNTAX 9
98 #define SYM_INDEX_BOUNDS_ERR 10
100 typedef enum {Unknown, Char, UChar, SHint, USHint, Sint, Uint, Slng, Ulng, flt, dbl} vartype;
102 typedef char SYMBOL_NAME[64];
103 typedef vartype SYMBOL_TYPE;
109 SYMBOL_NAME Mod_Name;
110 SYMBOL_NAME Par_Name;
111 SYMBOL_TYPE Par_Type;
117 extern int ls_findsym( const char *modname, const char *varname,
118 char **addr, vartype *vtype );
120 extern void ls_print_findsym_error(int result,
124 extern double ls_get_double(vartype sym_type, void *addr );
126 extern void ls_set_double(vartype sym_type, void *addr, double value );
128 extern double ls_get_sym_val( symbol_rec *symrec, int *error );
130 /* This routine attempts to return the present value of the symbol
131 described in symbol_rec. If Addr is non-zero, the value of that
132 location, interpreted as type double, will be returned. If Addr
133 is zero, and Mod_Name and Par_Name are both not null strings,
134 the ls_findsym() routine is used to try to obtain the address
135 by looking at debugger symbol tables in the executable image, and
136 the value of the double contained at that address is returned,
137 and the symbol record is updated to contain the address of that
138 symbol. If an error is discovered, 'error' will be non-zero and
139 and error message is printed on stderr. */
141 extern void ls_set_sym_val( symbol_rec *symrec, double value );
143 /* This routine sets the value of a double at the location pointed
144 to by the symbol_rec's Addr field, if Addr is non-zero. If Addr
145 is zero, and Mod_Name and Par_Name are both not null strings,
146 the ls_findsym() routine is used to try to obtain the address
147 by looking at debugger symbol tables in the executable image, and
148 the value of the double contained at that address is returned,
149 and the symbol record is updated to contain the address of that
150 symbol. If an error is discovered, 'error' will be non-zero and
151 and error message is printed on stderr. */