| 1 | /* The common simulator framework for GDB, the GNU Debugger. |
| 2 | |
| 3 | Copyright 2002, 2007, 2008, 2009, 2010 Free Software Foundation, Inc. |
| 4 | |
| 5 | Contributed by Andrew Cagney and Red Hat. |
| 6 | |
| 7 | This file is part of GDB. |
| 8 | |
| 9 | This program is free software; you can redistribute it and/or modify |
| 10 | it under the terms of the GNU General Public License as published by |
| 11 | the Free Software Foundation; either version 3 of the License, or |
| 12 | (at your option) any later version. |
| 13 | |
| 14 | This program is distributed in the hope that it will be useful, |
| 15 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | GNU General Public License for more details. |
| 18 | |
| 19 | You should have received a copy of the GNU General Public License |
| 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 21 | |
| 22 | |
| 23 | #include "hw-main.h" |
| 24 | #include "hw-base.h" |
| 25 | |
| 26 | #include "sim-io.h" |
| 27 | #include "sim-assert.h" |
| 28 | |
| 29 | struct hw_instance_data { |
| 30 | hw_finish_instance_method *to_finish; |
| 31 | struct hw_instance *instances; |
| 32 | }; |
| 33 | |
| 34 | static hw_finish_instance_method abort_hw_finish_instance; |
| 35 | |
| 36 | void |
| 37 | create_hw_instance_data (struct hw *me) |
| 38 | { |
| 39 | me->instances_of_hw = HW_ZALLOC (me, struct hw_instance_data); |
| 40 | set_hw_finish_instance (me, abort_hw_finish_instance); |
| 41 | } |
| 42 | |
| 43 | void |
| 44 | delete_hw_instance_data (struct hw *me) |
| 45 | { |
| 46 | /* NOP */ |
| 47 | } |
| 48 | |
| 49 | |
| 50 | static void |
| 51 | abort_hw_finish_instance (struct hw *hw, |
| 52 | struct hw_instance *instance) |
| 53 | { |
| 54 | hw_abort (hw, "no instance finish method"); |
| 55 | } |
| 56 | |
| 57 | void |
| 58 | set_hw_finish_instance (struct hw *me, |
| 59 | hw_finish_instance_method *finish) |
| 60 | { |
| 61 | me->instances_of_hw->to_finish = finish; |
| 62 | } |
| 63 | |
| 64 | |
| 65 | #if 0 |
| 66 | void |
| 67 | clean_hw_instances (struct hw *me) |
| 68 | { |
| 69 | struct hw_instance **instance = &me->instances; |
| 70 | while (*instance != NULL) |
| 71 | { |
| 72 | struct hw_instance *old_instance = *instance; |
| 73 | hw_instance_delete (old_instance); |
| 74 | instance = &me->instances; |
| 75 | } |
| 76 | } |
| 77 | #endif |
| 78 | |
| 79 | |
| 80 | void |
| 81 | hw_instance_delete (struct hw_instance *instance) |
| 82 | { |
| 83 | #if 1 |
| 84 | hw_abort (hw_instance_hw (instance), "not implemented"); |
| 85 | #else |
| 86 | struct hw *me = hw_instance_hw (instance); |
| 87 | if (instance->to_instance_delete == NULL) |
| 88 | hw_abort (me, "no delete method"); |
| 89 | instance->method->delete(instance); |
| 90 | if (instance->args != NULL) |
| 91 | zfree (instance->args); |
| 92 | if (instance->path != NULL) |
| 93 | zfree (instance->path); |
| 94 | if (instance->child == NULL) |
| 95 | { |
| 96 | /* only remove leaf nodes */ |
| 97 | struct hw_instance **curr = &me->instances; |
| 98 | while (*curr != instance) |
| 99 | { |
| 100 | ASSERT (*curr != NULL); |
| 101 | curr = &(*curr)->next; |
| 102 | } |
| 103 | *curr = instance->next; |
| 104 | } |
| 105 | else |
| 106 | { |
| 107 | /* check it isn't in the instance list */ |
| 108 | struct hw_instance *curr = me->instances; |
| 109 | while (curr != NULL) |
| 110 | { |
| 111 | ASSERT(curr != instance); |
| 112 | curr = curr->next; |
| 113 | } |
| 114 | /* unlink the child */ |
| 115 | ASSERT (instance->child->parent == instance); |
| 116 | instance->child->parent = NULL; |
| 117 | } |
| 118 | cap_remove (me->ihandles, instance); |
| 119 | zfree (instance); |
| 120 | #endif |
| 121 | } |
| 122 | |
| 123 | |
| 124 | static int |
| 125 | panic_hw_instance_read (struct hw_instance *instance, |
| 126 | void *addr, |
| 127 | unsigned_word len) |
| 128 | { |
| 129 | hw_abort (hw_instance_hw (instance), "no read method"); |
| 130 | return -1; |
| 131 | } |
| 132 | |
| 133 | |
| 134 | |
| 135 | static int |
| 136 | panic_hw_instance_write (struct hw_instance *instance, |
| 137 | const void *addr, |
| 138 | unsigned_word len) |
| 139 | { |
| 140 | hw_abort (hw_instance_hw (instance), "no write method"); |
| 141 | return -1; |
| 142 | } |
| 143 | |
| 144 | |
| 145 | static int |
| 146 | panic_hw_instance_seek (struct hw_instance *instance, |
| 147 | unsigned_word pos_hi, |
| 148 | unsigned_word pos_lo) |
| 149 | { |
| 150 | hw_abort (hw_instance_hw (instance), "no seek method"); |
| 151 | return -1; |
| 152 | } |
| 153 | |
| 154 | |
| 155 | int |
| 156 | hw_instance_call_method (struct hw_instance *instance, |
| 157 | const char *method_name, |
| 158 | int n_stack_args, |
| 159 | unsigned_cell stack_args[/*n_stack_args*/], |
| 160 | int n_stack_returns, |
| 161 | unsigned_cell stack_returns[/*n_stack_args*/]) |
| 162 | { |
| 163 | #if 1 |
| 164 | hw_abort (hw_instance_hw (instance), "not implemented"); |
| 165 | return -1; |
| 166 | #else |
| 167 | struct hw *me = instance->owner; |
| 168 | const hw_instance_methods *method = instance->method->methods; |
| 169 | if (method == NULL) |
| 170 | { |
| 171 | hw_abort (me, "no methods (want %s)", method_name); |
| 172 | } |
| 173 | while (method->name != NULL) |
| 174 | { |
| 175 | if (strcmp(method->name, method_name) == 0) |
| 176 | { |
| 177 | return method->method (instance, |
| 178 | n_stack_args, stack_args, |
| 179 | n_stack_returns, stack_returns); |
| 180 | } |
| 181 | method++; |
| 182 | } |
| 183 | hw_abort (me, "no %s method", method_name); |
| 184 | return 0; |
| 185 | #endif |
| 186 | } |
| 187 | |
| 188 | |
| 189 | #define set_hw_instance_read(instance, method)\ |
| 190 | ((instance)->to_instance_read = (method)) |
| 191 | |
| 192 | #define set_hw_instance_write(instance, method)\ |
| 193 | ((instance)->to_instance_write = (method)) |
| 194 | |
| 195 | #define set_hw_instance_seek(instance, method)\ |
| 196 | ((instance)->to_instance_seek = (method)) |
| 197 | |
| 198 | |
| 199 | #if 0 |
| 200 | static void |
| 201 | set_hw_instance_finish (struct hw *me, |
| 202 | hw_instance_finish_method *method) |
| 203 | { |
| 204 | if (me->instances_of_hw == NULL) |
| 205 | me->instances_of_hw = HW_ZALLOC (me, struct hw_instance_data); |
| 206 | me->instances_of_hw->to_finish = method; |
| 207 | } |
| 208 | #endif |
| 209 | |
| 210 | |
| 211 | struct hw_instance * |
| 212 | hw_instance_create (struct hw *me, |
| 213 | struct hw_instance *parent, |
| 214 | const char *path, |
| 215 | const char *args) |
| 216 | { |
| 217 | struct hw_instance *instance = ZALLOC (struct hw_instance); |
| 218 | /*instance->unit*/ |
| 219 | /* link this instance into the devices list */ |
| 220 | instance->hw_of_instance = me; |
| 221 | instance->parent_of_instance = NULL; |
| 222 | /* link this instance into the front of the devices instance list */ |
| 223 | instance->sibling_of_instance = me->instances_of_hw->instances; |
| 224 | me->instances_of_hw->instances = instance; |
| 225 | if (parent != NULL) |
| 226 | { |
| 227 | ASSERT (parent->child_of_instance == NULL); |
| 228 | parent->child_of_instance = instance; |
| 229 | instance->parent_of_instance = parent; |
| 230 | } |
| 231 | instance->args_of_instance = hw_strdup (me, args); |
| 232 | instance->path_of_instance = hw_strdup (me, path); |
| 233 | set_hw_instance_read (instance, panic_hw_instance_read); |
| 234 | set_hw_instance_write (instance, panic_hw_instance_write); |
| 235 | set_hw_instance_seek (instance, panic_hw_instance_seek); |
| 236 | hw_handle_add_ihandle (me, instance); |
| 237 | me->instances_of_hw->to_finish (me, instance); |
| 238 | return instance; |
| 239 | } |
| 240 | |
| 241 | |
| 242 | struct hw_instance * |
| 243 | hw_instance_interceed (struct hw_instance *parent, |
| 244 | const char *path, |
| 245 | const char *args) |
| 246 | { |
| 247 | #if 1 |
| 248 | return NULL; |
| 249 | #else |
| 250 | struct hw_instance *instance = ZALLOC (struct hw_instance); |
| 251 | /*instance->unit*/ |
| 252 | /* link this instance into the devices list */ |
| 253 | if (me != NULL) |
| 254 | { |
| 255 | ASSERT (parent == NULL); |
| 256 | instance->hw_of_instance = me; |
| 257 | instance->parent_of_instance = NULL; |
| 258 | /* link this instance into the front of the devices instance list */ |
| 259 | instance->sibling_of_instance = me->instances_of_hw->instances; |
| 260 | me->instances_of_hw->instances = instance; |
| 261 | } |
| 262 | if (parent != NULL) |
| 263 | { |
| 264 | struct hw_instance **previous; |
| 265 | ASSERT (parent->child_of_instance == NULL); |
| 266 | parent->child_of_instance = instance; |
| 267 | instance->owner = parent->owner; |
| 268 | instance->parent_of_instance = parent; |
| 269 | /* in the devices instance list replace the parent instance with |
| 270 | this one */ |
| 271 | instance->next = parent->next; |
| 272 | /* replace parent with this new node */ |
| 273 | previous = &instance->owner->instances; |
| 274 | while (*previous != parent) |
| 275 | { |
| 276 | ASSERT (*previous != NULL); |
| 277 | previous = &(*previous)->next; |
| 278 | } |
| 279 | *previous = instance; |
| 280 | } |
| 281 | instance->data = data; |
| 282 | instance->args = (args == NULL ? NULL : (char *) strdup(args)); |
| 283 | instance->path = (path == NULL ? NULL : (char *) strdup(path)); |
| 284 | cap_add (instance->owner->ihandles, instance); |
| 285 | return instance; |
| 286 | #endif |
| 287 | } |