Skip to content
Navigation Menu
{{ message }}
forked from DFHack/dfhack
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathDataDefs.cpp
More file actions
416 lines (334 loc) · 11.8 KB
/
Copy pathDataDefs.cpp
File metadata and controls
416 lines (334 loc) · 11.8 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
/*
https://github.com/peterix/dfhack
Copyright (c) 2009-2012 Petr Mrázek (peterix@gmail.com)
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any
damages arising from the use of this software.
Permission is granted to anyone to use this software for any
purpose, including commercial applications, and to alter it and
redistribute it freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must
not claim that you wrote the original software. If you use this
software in a product, an acknowledgment in the product documentation
would be appreciated but is not required.
2. Altered source versions must be plainly marked as such, and
must not be misrepresented as being the original software.
3. This notice may not be removed or altered from any source
distribution.
*/
#include "Internal.h"
#include <string>
#include <vector>
#include <map>
#include "MemAccess.h"
#include "Core.h"
#include "VersionInfo.h"
#include "tinythread.h"
// must be last due to MS stupidity
#include "DataDefs.h"
#include "DataIdentity.h"
#include "VTableInterpose.h"
#include "MiscUtils.h"
using namespace DFHack;
void *type_identity::do_allocate_pod() {
size_t sz = byte_size();
void *p = malloc(sz);
memset(p, 0, sz);
return p;
}
void type_identity::do_copy_pod(void *tgt, const void *src) {
memmove(tgt, src, byte_size());
};
bool type_identity::do_destroy_pod(void *obj) {
free(obj);
return true;
}
void *type_identity::allocate() {
if (can_allocate())
return do_allocate();
else
return NULL;
}
bool type_identity::copy(void *tgt, const void *src) {
if (can_allocate() && tgt && src)
{
do_copy(tgt, src);
return true;
}
else
return false;
}
bool type_identity::destroy(void *obj) {
if (can_allocate() && obj)
return do_destroy(obj);
else
return false;
}
void *enum_identity::do_allocate() {
size_t sz = byte_size();
void *p = malloc(sz);
memcpy(p, &first_item_value, std::min(sz, sizeof(int64_t)));
return p;
}
/* The order of global object constructor calls is
* undefined between compilation units. Therefore,
* this list has to be plain data, so that it gets
* initialized by the loader in the initial mmap.
*/
compound_identity *compound_identity::list = NULL;
std::vector<compound_identity*> compound_identity::top_scope;
compound_identity::compound_identity(size_t size, TAllocateFn alloc,
compound_identity *scope_parent, const char *dfhack_name)
: constructed_identity(size, alloc), dfhack_name(dfhack_name), scope_parent(scope_parent)
{
next = list; list = this;
}
void compound_identity::doInit(Core *)
{
if (scope_parent)
scope_parent->scope_children.push_back(this);
else
top_scope.push_back(this);
}
std::string compound_identity::getFullName()
{
if (scope_parent)
return scope_parent->getFullName() + "." + getName();
else
return getName();
}
static tthread::mutex *known_mutex = NULL;
void compound_identity::Init(Core *core)
{
if (!known_mutex)
known_mutex = new tthread::mutex();
// This cannot be done in the constructors, because
// they are called in an undefined order.
for (compound_identity *p = list; p; p = p->next)
p->doInit(core);
}
bitfield_identity::bitfield_identity(size_t size,
compound_identity *scope_parent, const char *dfhack_name,
int num_bits, const bitfield_item_info *bits)
: compound_identity(size, NULL, scope_parent, dfhack_name), bits(bits), num_bits(num_bits)
{
}
enum_identity::enum_identity(size_t size,
compound_identity *scope_parent, const char *dfhack_name,
type_identity *base_type,
int64_t first_item_value, int64_t last_item_value,
const char *const *keys,
const void *attrs, struct_identity *attr_type)
: compound_identity(size, NULL, scope_parent, dfhack_name),
keys(keys), first_item_value(first_item_value), last_item_value(last_item_value),
base_type(base_type), attrs(attrs), attr_type(attr_type)
{
}
struct_identity::struct_identity(size_t size, TAllocateFn alloc,
compound_identity *scope_parent, const char *dfhack_name,
struct_identity *parent, const struct_field_info *fields)
: compound_identity(size, alloc, scope_parent, dfhack_name),
parent(parent), has_children(false), fields(fields)
{
}
void struct_identity::doInit(Core *core)
{
compound_identity::doInit(core);
if (parent) {
parent->children.push_back(this);
parent->has_children = true;
}
}
bool struct_identity::is_subclass(struct_identity *actual)
{
if (!has_children && actual != this)
return false;
for (; actual; actual = actual->getParent())
if (actual == this) return true;
return false;
}
std::string pointer_identity::getFullName()
{
return (target ? target->getFullName() : std::string("void")) + "*";
}
std::string container_identity::getFullName(type_identity *item)
{
return "<" + (item ? item->getFullName() : std::string("void")) + ">";
}
std::string ptr_container_identity::getFullName(type_identity *item)
{
return "<" + (item ? item->getFullName() : std::string("void")) + "*>";
}
std::string bit_container_identity::getFullName(type_identity *)
{
return "<bool>";
}
std::string df::buffer_container_identity::getFullName(type_identity *item)
{
return (item ? item->getFullName() : std::string("void")) +
(size > 0 ? stl_sprintf("[%d]", size) : std::string("[]"));
}
virtual_identity::virtual_identity(size_t size, TAllocateFn alloc,
const char *dfhack_name, const char *original_name,
virtual_identity *parent, const struct_field_info *fields)
: struct_identity(size, alloc, NULL, dfhack_name, parent, fields), original_name(original_name),
vtable_ptr(NULL)
{
}
virtual_identity::~virtual_identity()
{
// Remove interpose entries, so that they don't try accessing this object later
for (auto it = interpose_list.begin(); it != interpose_list.end(); ++it)
if (it->second)
it->second->on_host_delete(this);
interpose_list.clear();
}
/* Vtable name to identity lookup. */
static std::map<std::string, virtual_identity*> name_lookup;
/* Vtable pointer to identity lookup. */
std::map<void*, virtual_identity*> virtual_identity::known;
void virtual_identity::doInit(Core *core)
{
struct_identity::doInit(core);
auto vtname = getOriginalName();
name_lookup[vtname] = this;
vtable_ptr = core->vinfo->getVTable(vtname);
if (vtable_ptr)
known[vtable_ptr] = this;
}
virtual_identity *virtual_identity::find(const std::string &name)
{
auto name_it = name_lookup.find(name);
return (name_it != name_lookup.end()) ? name_it->second : NULL;
}
virtual_identity *virtual_identity::get(virtual_ptr instance_ptr)
{
if (!instance_ptr) return NULL;
return find(get_vtable(instance_ptr));
}
virtual_identity *virtual_identity::find(void *vtable)
{
// Actually, a reader/writer lock would be sufficient,
// since the table is only written once per class.
tthread::lock_guard<tthread::mutex> lock(*known_mutex);
std::map<void*, virtual_identity*>::iterator it = known.find(vtable);
if (it != known.end())
return it->second;
// If using a reader/writer lock, re-grab as write here, and recheck
Core &core = Core::getInstance();
std::string name = core.p->doReadClassName(vtable);
virtual_identity *actual = NULL;
auto name_it = name_lookup.find(name);
if (name_it != name_lookup.end()) {
virtual_identity *p = name_it->second;
if (p->vtable_ptr && p->vtable_ptr != vtable) {
std::cerr << "Conflicting vtable ptr for class '" << p->getName()
<< "': found 0x" << std::hex << unsigned(vtable)
<< ", previous 0x" << unsigned(p->vtable_ptr) << std::dec << std::endl;
abort();
} else if (!p->vtable_ptr) {
uint32_t pv = unsigned(vtable);
pv -= Core::getInstance().vinfo->getRebaseDelta();
std::cerr << "<vtable-address name='" << p->getOriginalName() << "' value='0x"
<< std::hex << pv << std::dec << "'/>" << std::endl;
}
known[vtable] = p;
p->vtable_ptr = vtable;
return p;
}
std::cerr << "UNKNOWN CLASS '" << name << "': vtable = 0x"
<< std::hex << unsigned(vtable) << std::dec << std::endl;
known[vtable] = NULL;
return NULL;
}
void virtual_identity::adjust_vtable(virtual_ptr obj, virtual_identity *main)
{
if (vtable_ptr) {
*(void**)obj = vtable_ptr;
return;
}
if (main && main != this && is_subclass(main))
return;
std::cerr << "Attempt to create class '" << getName() << "' without known vtable." << std::endl;
abort();
}
virtual_ptr virtual_identity::clone(virtual_ptr obj)
{
virtual_identity *id = get(obj);
if (!id) return NULL;
virtual_ptr copy = id->instantiate();
if (!copy) return NULL;
id->do_copy(copy, obj);
return copy;
}
bool DFHack::findBitfieldField(unsigned *idx, const std::string &name,
unsigned size, const bitfield_item_info *items)
{
for (unsigned i = 0; i < size; i++) {
if (items[i].name && items[i].name == name)
{
*idx = i;
return true;
}
}
return false;
}
void DFHack::setBitfieldField(void *p, unsigned idx, unsigned size, int value)
{
uint8_t *data = ((uint8_t*)p) + (idx/8);
unsigned shift = idx%8;
uint32_t mask = ((1<<size)-1) << shift;
uint32_t vmask = ((value << shift) & mask);
#define ACCESS(type) *(type*)data = type((*(type*)data & ~mask) | vmask)
if (!(mask & ~0xFFU)) ACCESS(uint8_t);
else if (!(mask & ~0xFFFFU)) ACCESS(uint16_t);
else ACCESS(uint32_t);
#undef ACCESS
}
int DFHack::getBitfieldField(const void *p, unsigned idx, unsigned size)
{
const uint8_t *data = ((const uint8_t*)p) + (idx/8);
unsigned shift = idx%8;
uint32_t mask = ((1<<size)-1) << shift;
#define ACCESS(type) return int((*(type*)data & mask) >> shift)
if (!(mask & ~0xFFU)) ACCESS(uint8_t);
else if (!(mask & ~0xFFFFU)) ACCESS(uint16_t);
else ACCESS(uint32_t);
#undef ACCESS
}
void DFHack::bitfieldToString(std::vector<std::string> *pvec, const void *p,
unsigned size, const bitfield_item_info *items)
{
for (unsigned i = 0; i < size; i++) {
int value = getBitfieldField(p, i, std::max(1,items[i].size));
if (value) {
std::string name = format_key(items[i].name, i);
if (items[i].size > 1)
name += stl_sprintf("=%u", value);
pvec->push_back(name);
}
if (items[i].size > 1)
i += items[i].size-1;
}
}
int DFHack::findEnumItem(const std::string &name, int size, const char *const *items)
{
for (int i = 0; i < size; i++) {
if (items[i] && items[i] == name)
return i;
}
return -1;
}
void DFHack::flagarrayToString(std::vector<std::string> *pvec, const void *p,
int bytes, int base, int size, const char *const *items)
{
for (int i = 0; i < bytes*8; i++) {
int value = getBitfieldField(p, i, 1);
if (value)
{
int ridx = int(i) - base;
const char *name = (ridx >= 0 && ridx < size) ? items[ridx] : NULL;
pvec->push_back(format_key(name, i));
}
}
}
You can’t perform that action at this time.