| 1 | /* Longjump free calls to gdb internal routines. |
| 2 | Copyright 1999, 2000 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 2 of the License, or |
| 7 | (at your option) 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., 59 Temple Place - Suite 330, |
| 17 | Boston, MA 02111-1307, USA. */ |
| 18 | |
| 19 | #include "defs.h" |
| 20 | #include "value.h" |
| 21 | #include "wrapper.h" |
| 22 | |
| 23 | /* Use this struct to pass arguments to wrapper routines. We assume |
| 24 | (arbitrarily) that no gdb function takes more than ten arguments. */ |
| 25 | struct gdb_wrapper_arguments |
| 26 | { |
| 27 | |
| 28 | /* Pointer to some result from the gdb function call, if any */ |
| 29 | union wrapper_results |
| 30 | { |
| 31 | int integer; |
| 32 | void *pointer; |
| 33 | } result; |
| 34 | |
| 35 | |
| 36 | /* The list of arguments. */ |
| 37 | union wrapper_args |
| 38 | { |
| 39 | int integer; |
| 40 | void *pointer; |
| 41 | } args[10]; |
| 42 | }; |
| 43 | |
| 44 | static int wrap_parse_exp_1 (char *); |
| 45 | |
| 46 | static int wrap_evaluate_expression (char *); |
| 47 | |
| 48 | static int wrap_value_fetch_lazy (char *); |
| 49 | |
| 50 | static int wrap_value_equal (char *); |
| 51 | |
| 52 | static int wrap_value_assign (char *); |
| 53 | |
| 54 | static int wrap_value_subscript (char *); |
| 55 | |
| 56 | static int wrap_value_ind (char *opaque_arg); |
| 57 | |
| 58 | static int wrap_parse_and_eval_type (char *); |
| 59 | |
| 60 | int |
| 61 | gdb_parse_exp_1 (char **stringptr, struct block *block, int comma, |
| 62 | struct expression **expression) |
| 63 | { |
| 64 | struct gdb_wrapper_arguments args; |
| 65 | args.args[0].pointer = stringptr; |
| 66 | args.args[1].pointer = block; |
| 67 | args.args[2].integer = comma; |
| 68 | |
| 69 | if (!catch_errors ((catch_errors_ftype *) wrap_parse_exp_1, &args, |
| 70 | "", RETURN_MASK_ERROR)) |
| 71 | { |
| 72 | /* An error occurred */ |
| 73 | return 0; |
| 74 | } |
| 75 | |
| 76 | *expression = (struct expression *) args.result.pointer; |
| 77 | return 1; |
| 78 | |
| 79 | } |
| 80 | |
| 81 | static int |
| 82 | wrap_parse_exp_1 (char *argptr) |
| 83 | { |
| 84 | struct gdb_wrapper_arguments *args |
| 85 | = (struct gdb_wrapper_arguments *) argptr; |
| 86 | args->result.pointer = parse_exp_1((char **) args->args[0].pointer, |
| 87 | (struct block *) args->args[1].pointer, |
| 88 | args->args[2].integer); |
| 89 | return 1; |
| 90 | } |
| 91 | |
| 92 | int |
| 93 | gdb_evaluate_expression (struct expression *exp, value_ptr *value) |
| 94 | { |
| 95 | struct gdb_wrapper_arguments args; |
| 96 | args.args[0].pointer = exp; |
| 97 | |
| 98 | if (!catch_errors ((catch_errors_ftype *) wrap_evaluate_expression, &args, |
| 99 | "", RETURN_MASK_ERROR)) |
| 100 | { |
| 101 | /* An error occurred */ |
| 102 | return 0; |
| 103 | } |
| 104 | |
| 105 | *value = (value_ptr) args.result.pointer; |
| 106 | return 1; |
| 107 | } |
| 108 | |
| 109 | static int |
| 110 | wrap_evaluate_expression (char *a) |
| 111 | { |
| 112 | struct gdb_wrapper_arguments *args = (struct gdb_wrapper_arguments *) a; |
| 113 | |
| 114 | (args)->result.pointer = |
| 115 | (char *) evaluate_expression ((struct expression *) args->args[0].pointer); |
| 116 | return 1; |
| 117 | } |
| 118 | |
| 119 | int |
| 120 | gdb_value_fetch_lazy (value_ptr value) |
| 121 | { |
| 122 | struct gdb_wrapper_arguments args; |
| 123 | |
| 124 | args.args[0].pointer = value; |
| 125 | return catch_errors ((catch_errors_ftype *) wrap_value_fetch_lazy, &args, |
| 126 | "", RETURN_MASK_ERROR); |
| 127 | } |
| 128 | |
| 129 | static int |
| 130 | wrap_value_fetch_lazy (char *a) |
| 131 | { |
| 132 | struct gdb_wrapper_arguments *args = (struct gdb_wrapper_arguments *) a; |
| 133 | |
| 134 | value_fetch_lazy ((value_ptr) (args)->args[0].pointer); |
| 135 | return 1; |
| 136 | } |
| 137 | |
| 138 | int |
| 139 | gdb_value_equal (value_ptr val1, value_ptr val2, int *result) |
| 140 | { |
| 141 | struct gdb_wrapper_arguments args; |
| 142 | |
| 143 | args.args[0].pointer = val1; |
| 144 | args.args[1].pointer = val2; |
| 145 | |
| 146 | if (!catch_errors ((catch_errors_ftype *) wrap_value_equal, &args, |
| 147 | "", RETURN_MASK_ERROR)) |
| 148 | { |
| 149 | /* An error occurred */ |
| 150 | return 0; |
| 151 | } |
| 152 | |
| 153 | *result = args.result.integer; |
| 154 | return 1; |
| 155 | } |
| 156 | |
| 157 | static int |
| 158 | wrap_value_equal (char *a) |
| 159 | { |
| 160 | struct gdb_wrapper_arguments *args = (struct gdb_wrapper_arguments *) a; |
| 161 | value_ptr val1, val2; |
| 162 | |
| 163 | val1 = (value_ptr) (args)->args[0].pointer; |
| 164 | val2 = (value_ptr) (args)->args[1].pointer; |
| 165 | |
| 166 | (args)->result.integer = value_equal (val1, val2); |
| 167 | return 1; |
| 168 | } |
| 169 | |
| 170 | int |
| 171 | gdb_value_assign (value_ptr val1, value_ptr val2, value_ptr *result) |
| 172 | { |
| 173 | struct gdb_wrapper_arguments args; |
| 174 | |
| 175 | args.args[0].pointer = val1; |
| 176 | args.args[1].pointer = val2; |
| 177 | |
| 178 | if (!catch_errors ((catch_errors_ftype *) wrap_value_assign, &args, |
| 179 | "", RETURN_MASK_ERROR)) |
| 180 | { |
| 181 | /* An error occurred */ |
| 182 | return 0; |
| 183 | } |
| 184 | |
| 185 | *result = (value_ptr) args.result.pointer; |
| 186 | return 1; |
| 187 | } |
| 188 | |
| 189 | static int |
| 190 | wrap_value_assign (char *a) |
| 191 | { |
| 192 | struct gdb_wrapper_arguments *args = (struct gdb_wrapper_arguments *) a; |
| 193 | value_ptr val1, val2; |
| 194 | |
| 195 | val1 = (value_ptr) (args)->args[0].pointer; |
| 196 | val2 = (value_ptr) (args)->args[1].pointer; |
| 197 | |
| 198 | (args)->result.pointer = value_assign (val1, val2); |
| 199 | return 1; |
| 200 | } |
| 201 | |
| 202 | int |
| 203 | gdb_value_subscript (value_ptr val1, value_ptr val2, value_ptr *rval) |
| 204 | { |
| 205 | struct gdb_wrapper_arguments args; |
| 206 | |
| 207 | args.args[0].pointer = val1; |
| 208 | args.args[1].pointer = val2; |
| 209 | |
| 210 | if (!catch_errors ((catch_errors_ftype *) wrap_value_subscript, &args, |
| 211 | "", RETURN_MASK_ERROR)) |
| 212 | { |
| 213 | /* An error occurred */ |
| 214 | return 0; |
| 215 | } |
| 216 | |
| 217 | *rval = (value_ptr) args.result.pointer; |
| 218 | return 1; |
| 219 | } |
| 220 | |
| 221 | static int |
| 222 | wrap_value_subscript (char *a) |
| 223 | { |
| 224 | struct gdb_wrapper_arguments *args = (struct gdb_wrapper_arguments *) a; |
| 225 | value_ptr val1, val2; |
| 226 | |
| 227 | val1 = (value_ptr) (args)->args[0].pointer; |
| 228 | val2 = (value_ptr) (args)->args[1].pointer; |
| 229 | |
| 230 | (args)->result.pointer = value_subscript (val1, val2); |
| 231 | return 1; |
| 232 | } |
| 233 | |
| 234 | int |
| 235 | gdb_value_ind (value_ptr val, value_ptr *rval) |
| 236 | { |
| 237 | struct gdb_wrapper_arguments args; |
| 238 | |
| 239 | args.args[0].pointer = val; |
| 240 | |
| 241 | if (!catch_errors ((catch_errors_ftype *) wrap_value_ind, &args, |
| 242 | "", RETURN_MASK_ERROR)) |
| 243 | { |
| 244 | /* An error occurred */ |
| 245 | return 0; |
| 246 | } |
| 247 | |
| 248 | *rval = (value_ptr) args.result.pointer; |
| 249 | return 1; |
| 250 | } |
| 251 | |
| 252 | static int |
| 253 | wrap_value_ind (char *opaque_arg) |
| 254 | { |
| 255 | struct gdb_wrapper_arguments *args = (struct gdb_wrapper_arguments *) opaque_arg; |
| 256 | value_ptr val; |
| 257 | |
| 258 | val = (value_ptr) (args)->args[0].pointer; |
| 259 | (args)->result.pointer = value_ind (val); |
| 260 | return 1; |
| 261 | } |
| 262 | |
| 263 | int |
| 264 | gdb_parse_and_eval_type (char *p, int length, struct type **type) |
| 265 | { |
| 266 | struct gdb_wrapper_arguments args; |
| 267 | args.args[0].pointer = p; |
| 268 | args.args[1].integer = length; |
| 269 | |
| 270 | if (!catch_errors ((catch_errors_ftype *) wrap_parse_and_eval_type, &args, |
| 271 | "", RETURN_MASK_ALL)) |
| 272 | { |
| 273 | /* An error occurred */ |
| 274 | return 0; |
| 275 | } |
| 276 | |
| 277 | *type = (struct type *) args.result.pointer; |
| 278 | return 1; |
| 279 | } |
| 280 | |
| 281 | static int |
| 282 | wrap_parse_and_eval_type (char *a) |
| 283 | { |
| 284 | struct gdb_wrapper_arguments *args = (struct gdb_wrapper_arguments *) a; |
| 285 | |
| 286 | char *p = (char *) args->args[0].pointer; |
| 287 | int length = args->args[1].integer; |
| 288 | |
| 289 | args->result.pointer = (char *) parse_and_eval_type (p, length); |
| 290 | |
| 291 | return 1; |
| 292 | } |