1 //===-- DWARFDefines.cpp ----------------------------------------*- C++ -*-===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 #include "DWARFDefines.h"
10 #include "lldb/Utility/ConstString.h"
11 #include <cstdio>
12 #include <cstring>
13 #include <string>
14 
15 namespace lldb_private {
16 
17 const char *DW_TAG_value_to_name(uint32_t val) {
18   static char invalid[100];
19 
20   if (val == 0)
21     return "NULL";
22 
23   llvm::StringRef llvmstr = llvm::dwarf::TagString(val);
24   if (llvmstr.empty()) {
25     snprintf(invalid, sizeof(invalid), "Unknown DW_TAG constant: 0x%x", val);
26     return invalid;
27   }
28   return llvmstr.data();
29 }
30 
31 const char *DW_AT_value_to_name(uint32_t val) {
32   static char invalid[100];
33   llvm::StringRef llvmstr = llvm::dwarf::AttributeString(val);
34   if (llvmstr.empty()) {
35     snprintf(invalid, sizeof(invalid), "Unknown DW_AT constant: 0x%x", val);
36     return invalid;
37   }
38   return llvmstr.data();
39 }
40 
41 const char *DW_FORM_value_to_name(uint32_t val) {
42   static char invalid[100];
43   llvm::StringRef llvmstr = llvm::dwarf::FormEncodingString(val);
44   if (llvmstr.empty()) {
45     snprintf(invalid, sizeof(invalid), "Unknown DW_FORM constant: 0x%x", val);
46     return invalid;
47   }
48   return llvmstr.data();
49 }
50 
51 const char *DW_OP_value_to_name(uint32_t val) {
52   static char invalid[100];
53   llvm::StringRef llvmstr = llvm::dwarf::OperationEncodingString(val);
54   if (llvmstr.empty()) {
55     snprintf(invalid, sizeof(invalid), "Unknown DW_OP constant: 0x%x", val);
56     return invalid;
57   }
58   return llvmstr.data();
59 }
60 
61 DRC_class DW_OP_value_to_class(uint32_t val) {
62   // FIXME: If we just used llvm's DWARFExpression printer, we could delete
63   // all this code (and more in lldb's DWARFExpression.cpp).
64   switch (val) {
65   case 0x03:
66     return DRC_ONEOPERAND;
67   case 0x06:
68     return DRC_ZEROOPERANDS;
69   case 0x08:
70     return DRC_ONEOPERAND;
71   case 0x09:
72     return DRC_ONEOPERAND;
73   case 0x0a:
74     return DRC_ONEOPERAND;
75   case 0x0b:
76     return DRC_ONEOPERAND;
77   case 0x0c:
78     return DRC_ONEOPERAND;
79   case 0x0d:
80     return DRC_ONEOPERAND;
81   case 0x0e:
82     return DRC_ONEOPERAND;
83   case 0x0f:
84     return DRC_ONEOPERAND;
85   case 0x10:
86     return DRC_ONEOPERAND;
87   case 0x11:
88     return DRC_ONEOPERAND;
89   case 0x12:
90     return DRC_ZEROOPERANDS;
91   case 0x13:
92     return DRC_ZEROOPERANDS;
93   case 0x14:
94     return DRC_ZEROOPERANDS;
95   case 0x15:
96     return DRC_ONEOPERAND;
97   case 0x16:
98     return DRC_ZEROOPERANDS;
99   case 0x17:
100     return DRC_ZEROOPERANDS;
101   case 0x18:
102     return DRC_ZEROOPERANDS;
103   case 0x19:
104     return DRC_ZEROOPERANDS;
105   case 0x1a:
106     return DRC_ZEROOPERANDS;
107   case 0x1b:
108     return DRC_ZEROOPERANDS;
109   case 0x1c:
110     return DRC_ZEROOPERANDS;
111   case 0x1d:
112     return DRC_ZEROOPERANDS;
113   case 0x1e:
114     return DRC_ZEROOPERANDS;
115   case 0x1f:
116     return DRC_ZEROOPERANDS;
117   case 0x20:
118     return DRC_ZEROOPERANDS;
119   case 0x21:
120     return DRC_ZEROOPERANDS;
121   case 0x22:
122     return DRC_ZEROOPERANDS;
123   case 0x23:
124     return DRC_ONEOPERAND;
125   case 0x24:
126     return DRC_ZEROOPERANDS;
127   case 0x25:
128     return DRC_ZEROOPERANDS;
129   case 0x26:
130     return DRC_ZEROOPERANDS;
131   case 0x27:
132     return DRC_ZEROOPERANDS;
133   case 0x2f:
134     return DRC_ONEOPERAND;
135   case 0x28:
136     return DRC_ONEOPERAND;
137   case 0x29:
138     return DRC_ZEROOPERANDS;
139   case 0x2a:
140     return DRC_ZEROOPERANDS;
141   case 0x2b:
142     return DRC_ZEROOPERANDS;
143   case 0x2c:
144     return DRC_ZEROOPERANDS;
145   case 0x2d:
146     return DRC_ZEROOPERANDS;
147   case 0x2e:
148     return DRC_ZEROOPERANDS;
149   case 0x30:
150     return DRC_ZEROOPERANDS;
151   case 0x31:
152     return DRC_ZEROOPERANDS;
153   case 0x32:
154     return DRC_ZEROOPERANDS;
155   case 0x33:
156     return DRC_ZEROOPERANDS;
157   case 0x34:
158     return DRC_ZEROOPERANDS;
159   case 0x35:
160     return DRC_ZEROOPERANDS;
161   case 0x36:
162     return DRC_ZEROOPERANDS;
163   case 0x37:
164     return DRC_ZEROOPERANDS;
165   case 0x38:
166     return DRC_ZEROOPERANDS;
167   case 0x39:
168     return DRC_ZEROOPERANDS;
169   case 0x3a:
170     return DRC_ZEROOPERANDS;
171   case 0x3b:
172     return DRC_ZEROOPERANDS;
173   case 0x3c:
174     return DRC_ZEROOPERANDS;
175   case 0x3d:
176     return DRC_ZEROOPERANDS;
177   case 0x3e:
178     return DRC_ZEROOPERANDS;
179   case 0x3f:
180     return DRC_ZEROOPERANDS;
181   case 0x40:
182     return DRC_ZEROOPERANDS;
183   case 0x41:
184     return DRC_ZEROOPERANDS;
185   case 0x42:
186     return DRC_ZEROOPERANDS;
187   case 0x43:
188     return DRC_ZEROOPERANDS;
189   case 0x44:
190     return DRC_ZEROOPERANDS;
191   case 0x45:
192     return DRC_ZEROOPERANDS;
193   case 0x46:
194     return DRC_ZEROOPERANDS;
195   case 0x47:
196     return DRC_ZEROOPERANDS;
197   case 0x48:
198     return DRC_ZEROOPERANDS;
199   case 0x49:
200     return DRC_ZEROOPERANDS;
201   case 0x4a:
202     return DRC_ZEROOPERANDS;
203   case 0x4b:
204     return DRC_ZEROOPERANDS;
205   case 0x4c:
206     return DRC_ZEROOPERANDS;
207   case 0x4d:
208     return DRC_ZEROOPERANDS;
209   case 0x4e:
210     return DRC_ZEROOPERANDS;
211   case 0x4f:
212     return DRC_ZEROOPERANDS;
213   case 0x50:
214     return DRC_ZEROOPERANDS;
215   case 0x51:
216     return DRC_ZEROOPERANDS;
217   case 0x52:
218     return DRC_ZEROOPERANDS;
219   case 0x53:
220     return DRC_ZEROOPERANDS;
221   case 0x54:
222     return DRC_ZEROOPERANDS;
223   case 0x55:
224     return DRC_ZEROOPERANDS;
225   case 0x56:
226     return DRC_ZEROOPERANDS;
227   case 0x57:
228     return DRC_ZEROOPERANDS;
229   case 0x58:
230     return DRC_ZEROOPERANDS;
231   case 0x59:
232     return DRC_ZEROOPERANDS;
233   case 0x5a:
234     return DRC_ZEROOPERANDS;
235   case 0x5b:
236     return DRC_ZEROOPERANDS;
237   case 0x5c:
238     return DRC_ZEROOPERANDS;
239   case 0x5d:
240     return DRC_ZEROOPERANDS;
241   case 0x5e:
242     return DRC_ZEROOPERANDS;
243   case 0x5f:
244     return DRC_ZEROOPERANDS;
245   case 0x60:
246     return DRC_ZEROOPERANDS;
247   case 0x61:
248     return DRC_ZEROOPERANDS;
249   case 0x62:
250     return DRC_ZEROOPERANDS;
251   case 0x63:
252     return DRC_ZEROOPERANDS;
253   case 0x64:
254     return DRC_ZEROOPERANDS;
255   case 0x65:
256     return DRC_ZEROOPERANDS;
257   case 0x66:
258     return DRC_ZEROOPERANDS;
259   case 0x67:
260     return DRC_ZEROOPERANDS;
261   case 0x68:
262     return DRC_ZEROOPERANDS;
263   case 0x69:
264     return DRC_ZEROOPERANDS;
265   case 0x6a:
266     return DRC_ZEROOPERANDS;
267   case 0x6b:
268     return DRC_ZEROOPERANDS;
269   case 0x6c:
270     return DRC_ZEROOPERANDS;
271   case 0x6d:
272     return DRC_ZEROOPERANDS;
273   case 0x6e:
274     return DRC_ZEROOPERANDS;
275   case 0x6f:
276     return DRC_ZEROOPERANDS;
277   case 0x70:
278     return DRC_ONEOPERAND;
279   case 0x71:
280     return DRC_ONEOPERAND;
281   case 0x72:
282     return DRC_ONEOPERAND;
283   case 0x73:
284     return DRC_ONEOPERAND;
285   case 0x74:
286     return DRC_ONEOPERAND;
287   case 0x75:
288     return DRC_ONEOPERAND;
289   case 0x76:
290     return DRC_ONEOPERAND;
291   case 0x77:
292     return DRC_ONEOPERAND;
293   case 0x78:
294     return DRC_ONEOPERAND;
295   case 0x79:
296     return DRC_ONEOPERAND;
297   case 0x7a:
298     return DRC_ONEOPERAND;
299   case 0x7b:
300     return DRC_ONEOPERAND;
301   case 0x7c:
302     return DRC_ONEOPERAND;
303   case 0x7d:
304     return DRC_ONEOPERAND;
305   case 0x7e:
306     return DRC_ONEOPERAND;
307   case 0x7f:
308     return DRC_ONEOPERAND;
309   case 0x80:
310     return DRC_ONEOPERAND;
311   case 0x81:
312     return DRC_ONEOPERAND;
313   case 0x82:
314     return DRC_ONEOPERAND;
315   case 0x83:
316     return DRC_ONEOPERAND;
317   case 0x84:
318     return DRC_ONEOPERAND;
319   case 0x85:
320     return DRC_ONEOPERAND;
321   case 0x86:
322     return DRC_ONEOPERAND;
323   case 0x87:
324     return DRC_ONEOPERAND;
325   case 0x88:
326     return DRC_ONEOPERAND;
327   case 0x89:
328     return DRC_ONEOPERAND;
329   case 0x8a:
330     return DRC_ONEOPERAND;
331   case 0x8b:
332     return DRC_ONEOPERAND;
333   case 0x8c:
334     return DRC_ONEOPERAND;
335   case 0x8d:
336     return DRC_ONEOPERAND;
337   case 0x8e:
338     return DRC_ONEOPERAND;
339   case 0x8f:
340     return DRC_ONEOPERAND;
341   case 0x90:
342     return DRC_ONEOPERAND;
343   case 0x91:
344     return DRC_ONEOPERAND;
345   case 0x92:
346     return DRC_TWOOPERANDS;
347   case 0x93:
348     return DRC_ONEOPERAND;
349   case 0x94:
350     return DRC_ONEOPERAND;
351   case 0x95:
352     return DRC_ONEOPERAND;
353   case 0x96:
354     return DRC_ZEROOPERANDS;
355   case 0x97:
356     return DRC_DWARFv3 | DRC_ZEROOPERANDS;
357   case 0x98:
358     return DRC_DWARFv3 | DRC_ONEOPERAND;
359   case 0x99:
360     return DRC_DWARFv3 | DRC_ONEOPERAND;
361   case 0x9a:
362     return DRC_DWARFv3 | DRC_ONEOPERAND;
363   case 0xa3: /* DW_OP_entry_value */
364     return DRC_TWOOPERANDS;
365   case 0xf0:
366     return DRC_ZEROOPERANDS; /* DW_OP_APPLE_uninit */
367   case 0xe0:
368     return 0;
369   case 0xff:
370     return 0;
371   default:
372     return 0;
373   }
374 }
375 
376 const char *DW_ATE_value_to_name(uint32_t val) {
377   static char invalid[100];
378   llvm::StringRef llvmstr = llvm::dwarf::AttributeEncodingString(val);
379   if (llvmstr.empty()) {
380     snprintf(invalid, sizeof(invalid), "Unknown DW_ATE constant: 0x%x", val);
381     return invalid;
382   }
383   return llvmstr.data();
384 }
385 
386 const char *DW_LANG_value_to_name(uint32_t val) {
387   static char invalid[100];
388   llvm::StringRef llvmstr = llvm::dwarf::LanguageString(val);
389   if (llvmstr.empty()) {
390     snprintf(invalid, sizeof(invalid), "Unknown DW_LANG constant: 0x%x", val);
391     return invalid;
392   }
393   return llvmstr.data();
394 }
395 
396 const char *DW_LNS_value_to_name(uint32_t val) {
397   static char invalid[100];
398   llvm::StringRef llvmstr = llvm::dwarf::LNStandardString(val);
399   if (llvmstr.empty()) {
400     snprintf(invalid, sizeof(invalid), "Unknown DW_LNS constant: 0x%x", val);
401     return invalid;
402   }
403   return llvmstr.data();
404 }
405 
406 } // namespace lldb_private
407