Dwarf.cpp revision c23197a26f34f559ea9797de51e187087c039c42
1//===-- llvm/Support/Dwarf.cpp - Dwarf Framework ----------------*- C++ -*-===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// This file contains support for generic dwarf information.
11//
12//===----------------------------------------------------------------------===//
13
14#include "llvm/Support/Dwarf.h"
15#include "llvm/Support/ErrorHandling.h"
16
17#include <cassert>
18
19namespace llvm {
20
21namespace dwarf {
22
23/// TagString - Return the string for the specified tag.
24///
25const char *TagString(unsigned Tag) {
26  switch (Tag) {
27    case DW_TAG_array_type:                return "DW_TAG_array_type";
28    case DW_TAG_class_type:                return "DW_TAG_class_type";
29    case DW_TAG_entry_point:               return "DW_TAG_entry_point";
30    case DW_TAG_enumeration_type:          return "DW_TAG_enumeration_type";
31    case DW_TAG_formal_parameter:          return "DW_TAG_formal_parameter";
32    case DW_TAG_imported_declaration:      return "DW_TAG_imported_declaration";
33    case DW_TAG_label:                     return "DW_TAG_label";
34    case DW_TAG_lexical_block:             return "DW_TAG_lexical_block";
35    case DW_TAG_member:                    return "DW_TAG_member";
36    case DW_TAG_pointer_type:              return "DW_TAG_pointer_type";
37    case DW_TAG_reference_type:            return "DW_TAG_reference_type";
38    case DW_TAG_compile_unit:              return "DW_TAG_compile_unit";
39    case DW_TAG_string_type:               return "DW_TAG_string_type";
40    case DW_TAG_structure_type:            return "DW_TAG_structure_type";
41    case DW_TAG_subroutine_type:           return "DW_TAG_subroutine_type";
42    case DW_TAG_typedef:                   return "DW_TAG_typedef";
43    case DW_TAG_union_type:                return "DW_TAG_union_type";
44    case DW_TAG_unspecified_parameters:    return "DW_TAG_unspecified_parameters";
45    case DW_TAG_variant:                   return "DW_TAG_variant";
46    case DW_TAG_common_block:              return "DW_TAG_common_block";
47    case DW_TAG_common_inclusion:          return "DW_TAG_common_inclusion";
48    case DW_TAG_inheritance:               return "DW_TAG_inheritance";
49    case DW_TAG_inlined_subroutine:        return "DW_TAG_inlined_subroutine";
50    case DW_TAG_module:                    return "DW_TAG_module";
51    case DW_TAG_ptr_to_member_type:        return "DW_TAG_ptr_to_member_type";
52    case DW_TAG_set_type:                  return "DW_TAG_set_type";
53    case DW_TAG_subrange_type:             return "DW_TAG_subrange_type";
54    case DW_TAG_with_stmt:                 return "DW_TAG_with_stmt";
55    case DW_TAG_access_declaration:        return "DW_TAG_access_declaration";
56    case DW_TAG_base_type:                 return "DW_TAG_base_type";
57    case DW_TAG_catch_block:               return "DW_TAG_catch_block";
58    case DW_TAG_const_type:                return "DW_TAG_const_type";
59    case DW_TAG_constant:                  return "DW_TAG_constant";
60    case DW_TAG_enumerator:                return "DW_TAG_enumerator";
61    case DW_TAG_file_type:                 return "DW_TAG_file_type";
62    case DW_TAG_friend:                    return "DW_TAG_friend";
63    case DW_TAG_namelist:                  return "DW_TAG_namelist";
64    case DW_TAG_namelist_item:             return "DW_TAG_namelist_item";
65    case DW_TAG_packed_type:               return "DW_TAG_packed_type";
66    case DW_TAG_subprogram:                return "DW_TAG_subprogram";
67    case DW_TAG_template_type_parameter:   return "DW_TAG_template_type_parameter";
68    case DW_TAG_template_value_parameter: return "DW_TAG_template_value_parameter";
69    case DW_TAG_thrown_type:               return "DW_TAG_thrown_type";
70    case DW_TAG_try_block:                 return "DW_TAG_try_block";
71    case DW_TAG_variant_part:              return "DW_TAG_variant_part";
72    case DW_TAG_variable:                  return "DW_TAG_variable";
73    case DW_TAG_volatile_type:             return "DW_TAG_volatile_type";
74    case DW_TAG_dwarf_procedure:           return "DW_TAG_dwarf_procedure";
75    case DW_TAG_restrict_type:             return "DW_TAG_restrict_type";
76    case DW_TAG_interface_type:            return "DW_TAG_interface_type";
77    case DW_TAG_namespace:                 return "DW_TAG_namespace";
78    case DW_TAG_imported_module:           return "DW_TAG_imported_module";
79    case DW_TAG_unspecified_type:          return "DW_TAG_unspecified_type";
80    case DW_TAG_partial_unit:              return "DW_TAG_partial_unit";
81    case DW_TAG_imported_unit:             return "DW_TAG_imported_unit";
82    case DW_TAG_condition:                 return "DW_TAG_condition";
83    case DW_TAG_shared_type:               return "DW_TAG_shared_type";
84    case DW_TAG_lo_user:                   return "DW_TAG_lo_user";
85    case DW_TAG_hi_user:                   return "DW_TAG_hi_user";
86  }
87  llvm_unreachable("Unknown Dwarf Tag");
88  return "";
89}
90
91/// ChildrenString - Return the string for the specified children flag.
92///
93const char *ChildrenString(unsigned Children) {
94  switch (Children) {
95    case DW_CHILDREN_no:                   return "CHILDREN_no";
96    case DW_CHILDREN_yes:                  return "CHILDREN_yes";
97  }
98  llvm_unreachable("Unknown Dwarf ChildrenFlag");
99  return "";
100}
101
102/// AttributeString - Return the string for the specified attribute.
103///
104const char *AttributeString(unsigned Attribute) {
105  switch (Attribute) {
106    case DW_AT_sibling:                    return "DW_AT_sibling";
107    case DW_AT_location:                   return "DW_AT_location";
108    case DW_AT_name:                       return "DW_AT_name";
109    case DW_AT_ordering:                   return "DW_AT_ordering";
110    case DW_AT_byte_size:                  return "DW_AT_byte_size";
111    case DW_AT_bit_offset:                 return "DW_AT_bit_offset";
112    case DW_AT_bit_size:                   return "DW_AT_bit_size";
113    case DW_AT_stmt_list:                  return "DW_AT_stmt_list";
114    case DW_AT_low_pc:                     return "DW_AT_low_pc";
115    case DW_AT_high_pc:                    return "DW_AT_high_pc";
116    case DW_AT_language:                   return "DW_AT_language";
117    case DW_AT_discr:                      return "DW_AT_discr";
118    case DW_AT_discr_value:                return "DW_AT_discr_value";
119    case DW_AT_visibility:                 return "DW_AT_visibility";
120    case DW_AT_import:                     return "DW_AT_import";
121    case DW_AT_string_length:              return "DW_AT_string_length";
122    case DW_AT_common_reference:           return "DW_AT_common_reference";
123    case DW_AT_comp_dir:                   return "DW_AT_comp_dir";
124    case DW_AT_const_value:                return "DW_AT_const_value";
125    case DW_AT_containing_type:            return "DW_AT_containing_type";
126    case DW_AT_default_value:              return "DW_AT_default_value";
127    case DW_AT_inline:                     return "DW_AT_inline";
128    case DW_AT_is_optional:                return "DW_AT_is_optional";
129    case DW_AT_lower_bound:                return "DW_AT_lower_bound";
130    case DW_AT_producer:                   return "DW_AT_producer";
131    case DW_AT_prototyped:                 return "DW_AT_prototyped";
132    case DW_AT_return_addr:                return "DW_AT_return_addr";
133    case DW_AT_start_scope:                return "DW_AT_start_scope";
134    case DW_AT_bit_stride:                 return "DW_AT_bit_stride";
135    case DW_AT_upper_bound:                return "DW_AT_upper_bound";
136    case DW_AT_abstract_origin:            return "DW_AT_abstract_origin";
137    case DW_AT_accessibility:              return "DW_AT_accessibility";
138    case DW_AT_address_class:              return "DW_AT_address_class";
139    case DW_AT_artificial:                 return "DW_AT_artificial";
140    case DW_AT_base_types:                 return "DW_AT_base_types";
141    case DW_AT_calling_convention:         return "DW_AT_calling_convention";
142    case DW_AT_count:                      return "DW_AT_count";
143    case DW_AT_data_member_location:       return "DW_AT_data_member_location";
144    case DW_AT_decl_column:                return "DW_AT_decl_column";
145    case DW_AT_decl_file:                  return "DW_AT_decl_file";
146    case DW_AT_decl_line:                  return "DW_AT_decl_line";
147    case DW_AT_declaration:                return "DW_AT_declaration";
148    case DW_AT_discr_list:                 return "DW_AT_discr_list";
149    case DW_AT_encoding:                   return "DW_AT_encoding";
150    case DW_AT_external:                   return "DW_AT_external";
151    case DW_AT_frame_base:                 return "DW_AT_frame_base";
152    case DW_AT_friend:                     return "DW_AT_friend";
153    case DW_AT_identifier_case:            return "DW_AT_identifier_case";
154    case DW_AT_macro_info:                 return "DW_AT_macro_info";
155    case DW_AT_namelist_item:              return "DW_AT_namelist_item";
156    case DW_AT_priority:                   return "DW_AT_priority";
157    case DW_AT_segment:                    return "DW_AT_segment";
158    case DW_AT_specification:              return "DW_AT_specification";
159    case DW_AT_static_link:                return "DW_AT_static_link";
160    case DW_AT_type:                       return "DW_AT_type";
161    case DW_AT_use_location:               return "DW_AT_use_location";
162    case DW_AT_variable_parameter:         return "DW_AT_variable_parameter";
163    case DW_AT_virtuality:                 return "DW_AT_virtuality";
164    case DW_AT_vtable_elem_location:       return "DW_AT_vtable_elem_location";
165    case DW_AT_allocated:                  return "DW_AT_allocated";
166    case DW_AT_associated:                 return "DW_AT_associated";
167    case DW_AT_data_location:              return "DW_AT_data_location";
168    case DW_AT_byte_stride:                return "DW_AT_byte_stride";
169    case DW_AT_entry_pc:                   return "DW_AT_entry_pc";
170    case DW_AT_use_UTF8:                   return "DW_AT_use_UTF8";
171    case DW_AT_extension:                  return "DW_AT_extension";
172    case DW_AT_ranges:                     return "DW_AT_ranges";
173    case DW_AT_trampoline:                 return "DW_AT_trampoline";
174    case DW_AT_call_column:                return "DW_AT_call_column";
175    case DW_AT_call_file:                  return "DW_AT_call_file";
176    case DW_AT_call_line:                  return "DW_AT_call_line";
177    case DW_AT_description:                return "DW_AT_description";
178    case DW_AT_binary_scale:               return "DW_AT_binary_scale";
179    case DW_AT_decimal_scale:              return "DW_AT_decimal_scale";
180    case DW_AT_small:                      return "DW_AT_small";
181    case DW_AT_decimal_sign:               return "DW_AT_decimal_sign";
182    case DW_AT_digit_count:                return "DW_AT_digit_count";
183    case DW_AT_picture_string:             return "DW_AT_picture_string";
184    case DW_AT_mutable:                    return "DW_AT_mutable";
185    case DW_AT_threads_scaled:             return "DW_AT_threads_scaled";
186    case DW_AT_explicit:                   return "DW_AT_explicit";
187    case DW_AT_object_pointer:             return "DW_AT_object_pointer";
188    case DW_AT_endianity:                  return "DW_AT_endianity";
189    case DW_AT_elemental:                  return "DW_AT_elemental";
190    case DW_AT_pure:                       return "DW_AT_pure";
191    case DW_AT_recursive:                  return "DW_AT_recursive";
192    case DW_AT_MIPS_linkage_name:          return "DW_AT_MIPS_linkage_name";
193    case DW_AT_sf_names:                   return "DW_AT_sf_names";
194    case DW_AT_src_info:                   return "DW_AT_src_info";
195    case DW_AT_mac_info:                   return "DW_AT_mac_info";
196    case DW_AT_src_coords:                 return "DW_AT_src_coords";
197    case DW_AT_body_begin:                 return "DW_AT_body_begin";
198    case DW_AT_body_end:                   return "DW_AT_body_end";
199    case DW_AT_GNU_vector:                 return "DW_AT_GNU_vector";
200    case DW_AT_lo_user:                    return "DW_AT_lo_user";
201    case DW_AT_hi_user:                    return "DW_AT_hi_user";
202    case DW_AT_APPLE_optimized:            return "DW_AT_APPLE_optimized";
203    case DW_AT_APPLE_flags:                return "DW_AT_APPLE_flags";
204    case DW_AT_APPLE_isa:                  return "DW_AT_APPLE_isa";
205    case DW_AT_APPLE_block:                return "DW_AT_APPLE_block";
206    case DW_AT_APPLE_major_runtime_vers:   return "DW_AT_APPLE_major_runtime_vers";
207    case DW_AT_APPLE_runtime_class:        return "DW_AT_APPLE_runtime_class";
208  }
209  llvm_unreachable("Unknown Dwarf Attribute");
210  return "";
211}
212
213/// FormEncodingString - Return the string for the specified form encoding.
214///
215const char *FormEncodingString(unsigned Encoding) {
216  switch (Encoding) {
217    case DW_FORM_addr:                     return "FORM_addr";
218    case DW_FORM_block2:                   return "FORM_block2";
219    case DW_FORM_block4:                   return "FORM_block4";
220    case DW_FORM_data2:                    return "FORM_data2";
221    case DW_FORM_data4:                    return "FORM_data4";
222    case DW_FORM_data8:                    return "FORM_data8";
223    case DW_FORM_string:                   return "FORM_string";
224    case DW_FORM_block:                    return "FORM_block";
225    case DW_FORM_block1:                   return "FORM_block1";
226    case DW_FORM_data1:                    return "FORM_data1";
227    case DW_FORM_flag:                     return "FORM_flag";
228    case DW_FORM_sdata:                    return "FORM_sdata";
229    case DW_FORM_strp:                     return "FORM_strp";
230    case DW_FORM_udata:                    return "FORM_udata";
231    case DW_FORM_ref_addr:                 return "FORM_ref_addr";
232    case DW_FORM_ref1:                     return "FORM_ref1";
233    case DW_FORM_ref2:                     return "FORM_ref2";
234    case DW_FORM_ref4:                     return "FORM_ref4";
235    case DW_FORM_ref8:                     return "FORM_ref8";
236    case DW_FORM_ref_udata:                return "FORM_ref_udata";
237    case DW_FORM_indirect:                 return "FORM_indirect";
238  }
239  llvm_unreachable("Unknown Dwarf Form Encoding");
240  return "";
241}
242
243/// OperationEncodingString - Return the string for the specified operation
244/// encoding.
245const char *OperationEncodingString(unsigned Encoding) {
246  switch (Encoding) {
247    case DW_OP_addr:                       return "OP_addr";
248    case DW_OP_deref:                      return "OP_deref";
249    case DW_OP_const1u:                    return "OP_const1u";
250    case DW_OP_const1s:                    return "OP_const1s";
251    case DW_OP_const2u:                    return "OP_const2u";
252    case DW_OP_const2s:                    return "OP_const2s";
253    case DW_OP_const4u:                    return "OP_const4u";
254    case DW_OP_const4s:                    return "OP_const4s";
255    case DW_OP_const8u:                    return "OP_const8u";
256    case DW_OP_const8s:                    return "OP_const8s";
257    case DW_OP_constu:                     return "OP_constu";
258    case DW_OP_consts:                     return "OP_consts";
259    case DW_OP_dup:                        return "OP_dup";
260    case DW_OP_drop:                       return "OP_drop";
261    case DW_OP_over:                       return "OP_over";
262    case DW_OP_pick:                       return "OP_pick";
263    case DW_OP_swap:                       return "OP_swap";
264    case DW_OP_rot:                        return "OP_rot";
265    case DW_OP_xderef:                     return "OP_xderef";
266    case DW_OP_abs:                        return "OP_abs";
267    case DW_OP_and:                        return "OP_and";
268    case DW_OP_div:                        return "OP_div";
269    case DW_OP_minus:                      return "OP_minus";
270    case DW_OP_mod:                        return "OP_mod";
271    case DW_OP_mul:                        return "OP_mul";
272    case DW_OP_neg:                        return "OP_neg";
273    case DW_OP_not:                        return "OP_not";
274    case DW_OP_or:                         return "OP_or";
275    case DW_OP_plus:                       return "OP_plus";
276    case DW_OP_plus_uconst:                return "OP_plus_uconst";
277    case DW_OP_shl:                        return "OP_shl";
278    case DW_OP_shr:                        return "OP_shr";
279    case DW_OP_shra:                       return "OP_shra";
280    case DW_OP_xor:                        return "OP_xor";
281    case DW_OP_skip:                       return "OP_skip";
282    case DW_OP_bra:                        return "OP_bra";
283    case DW_OP_eq:                         return "OP_eq";
284    case DW_OP_ge:                         return "OP_ge";
285    case DW_OP_gt:                         return "OP_gt";
286    case DW_OP_le:                         return "OP_le";
287    case DW_OP_lt:                         return "OP_lt";
288    case DW_OP_ne:                         return "OP_ne";
289    case DW_OP_lit0:                       return "OP_lit0";
290    case DW_OP_lit1:                       return "OP_lit1";
291    case DW_OP_lit31:                      return "OP_lit31";
292    case DW_OP_reg0:                       return "OP_reg0";
293    case DW_OP_reg1:                       return "OP_reg1";
294    case DW_OP_reg31:                      return "OP_reg31";
295    case DW_OP_breg0:                      return "OP_breg0";
296    case DW_OP_breg1:                      return "OP_breg1";
297    case DW_OP_breg31:                     return "OP_breg31";
298    case DW_OP_regx:                       return "OP_regx";
299    case DW_OP_fbreg:                      return "OP_fbreg";
300    case DW_OP_bregx:                      return "OP_bregx";
301    case DW_OP_piece:                      return "OP_piece";
302    case DW_OP_deref_size:                 return "OP_deref_size";
303    case DW_OP_xderef_size:                return "OP_xderef_size";
304    case DW_OP_nop:                        return "OP_nop";
305    case DW_OP_push_object_address:        return "OP_push_object_address";
306    case DW_OP_call2:                      return "OP_call2";
307    case DW_OP_call4:                      return "OP_call4";
308    case DW_OP_call_ref:                   return "OP_call_ref";
309    case DW_OP_form_tls_address:           return "OP_form_tls_address";
310    case DW_OP_call_frame_cfa:             return "OP_call_frame_cfa";
311    case DW_OP_lo_user:                    return "OP_lo_user";
312    case DW_OP_hi_user:                    return "OP_hi_user";
313  }
314  llvm_unreachable("Unknown Dwarf Operation Encoding");
315  return "";
316}
317
318/// AttributeEncodingString - Return the string for the specified attribute
319/// encoding.
320const char *AttributeEncodingString(unsigned Encoding) {
321  switch (Encoding) {
322    case DW_ATE_address:                   return "ATE_address";
323    case DW_ATE_boolean:                   return "ATE_boolean";
324    case DW_ATE_complex_float:             return "ATE_complex_float";
325    case DW_ATE_float:                     return "ATE_float";
326    case DW_ATE_signed:                    return "ATE_signed";
327    case DW_ATE_signed_char:               return "ATE_signed_char";
328    case DW_ATE_unsigned:                  return "ATE_unsigned";
329    case DW_ATE_unsigned_char:             return "ATE_unsigned_char";
330    case DW_ATE_imaginary_float:           return "ATE_imaginary_float";
331    case DW_ATE_packed_decimal:            return "ATE_packed_decimal";
332    case DW_ATE_numeric_string:            return "ATE_numeric_string";
333    case DW_ATE_edited:                    return "ATE_edited";
334    case DW_ATE_signed_fixed:              return "ATE_signed_fixed";
335    case DW_ATE_unsigned_fixed:            return "ATE_unsigned_fixed";
336    case DW_ATE_decimal_float:             return "ATE_decimal_float";
337    case DW_ATE_lo_user:                   return "ATE_lo_user";
338    case DW_ATE_hi_user:                   return "ATE_hi_user";
339  }
340  llvm_unreachable("Unknown Dwarf Attribute Encoding");
341  return "";
342}
343
344/// DecimalSignString - Return the string for the specified decimal sign
345/// attribute.
346const char *DecimalSignString(unsigned Sign) {
347  switch (Sign) {
348    case DW_DS_unsigned:                   return "DS_unsigned";
349    case DW_DS_leading_overpunch:          return "DS_leading_overpunch";
350    case DW_DS_trailing_overpunch:         return "DS_trailing_overpunch";
351    case DW_DS_leading_separate:           return "DS_leading_separate";
352    case DW_DS_trailing_separate:          return "DS_trailing_separate";
353  }
354  llvm_unreachable("Unknown Dwarf Decimal Sign Attribute");
355  return "";
356}
357
358/// EndianityString - Return the string for the specified endianity.
359///
360const char *EndianityString(unsigned Endian) {
361  switch (Endian) {
362    case DW_END_default:                   return "END_default";
363    case DW_END_big:                       return "END_big";
364    case DW_END_little:                    return "END_little";
365    case DW_END_lo_user:                   return "END_lo_user";
366    case DW_END_hi_user:                   return "END_hi_user";
367  }
368  llvm_unreachable("Unknown Dwarf Endianity");
369  return "";
370}
371
372/// AccessibilityString - Return the string for the specified accessibility.
373///
374const char *AccessibilityString(unsigned Access) {
375  switch (Access) {
376    // Accessibility codes
377    case DW_ACCESS_public:                 return "ACCESS_public";
378    case DW_ACCESS_protected:              return "ACCESS_protected";
379    case DW_ACCESS_private:                return "ACCESS_private";
380  }
381  llvm_unreachable("Unknown Dwarf Accessibility");
382  return "";
383}
384
385/// VisibilityString - Return the string for the specified visibility.
386///
387const char *VisibilityString(unsigned Visibility) {
388  switch (Visibility) {
389    case DW_VIS_local:                     return "VIS_local";
390    case DW_VIS_exported:                  return "VIS_exported";
391    case DW_VIS_qualified:                 return "VIS_qualified";
392  }
393  llvm_unreachable("Unknown Dwarf Visibility");
394  return "";
395}
396
397/// VirtualityString - Return the string for the specified virtuality.
398///
399const char *VirtualityString(unsigned Virtuality) {
400  switch (Virtuality) {
401    case DW_VIRTUALITY_none:               return "VIRTUALITY_none";
402    case DW_VIRTUALITY_virtual:            return "VIRTUALITY_virtual";
403    case DW_VIRTUALITY_pure_virtual:       return "VIRTUALITY_pure_virtual";
404  }
405  llvm_unreachable("Unknown Dwarf Virtuality");
406  return "";
407}
408
409/// LanguageString - Return the string for the specified language.
410///
411const char *LanguageString(unsigned Language) {
412  switch (Language) {
413    case DW_LANG_C89:                      return "LANG_C89";
414    case DW_LANG_C:                        return "LANG_C";
415    case DW_LANG_Ada83:                    return "LANG_Ada83";
416    case DW_LANG_C_plus_plus:              return "LANG_C_plus_plus";
417    case DW_LANG_Cobol74:                  return "LANG_Cobol74";
418    case DW_LANG_Cobol85:                  return "LANG_Cobol85";
419    case DW_LANG_Fortran77:                return "LANG_Fortran77";
420    case DW_LANG_Fortran90:                return "LANG_Fortran90";
421    case DW_LANG_Pascal83:                 return "LANG_Pascal83";
422    case DW_LANG_Modula2:                  return "LANG_Modula2";
423    case DW_LANG_Java:                     return "LANG_Java";
424    case DW_LANG_C99:                      return "LANG_C99";
425    case DW_LANG_Ada95:                    return "LANG_Ada95";
426    case DW_LANG_Fortran95:                return "LANG_Fortran95";
427    case DW_LANG_PLI:                      return "LANG_PLI";
428    case DW_LANG_ObjC:                     return "LANG_ObjC";
429    case DW_LANG_ObjC_plus_plus:           return "LANG_ObjC_plus_plus";
430    case DW_LANG_UPC:                      return "LANG_UPC";
431    case DW_LANG_D:                        return "LANG_D";
432    case DW_LANG_lo_user:                  return "LANG_lo_user";
433    case DW_LANG_hi_user:                  return "LANG_hi_user";
434  }
435  llvm_unreachable("Unknown Dwarf Language");
436  return "";
437}
438
439/// CaseString - Return the string for the specified identifier case.
440///
441const char *CaseString(unsigned Case) {
442   switch (Case) {
443    case DW_ID_case_sensitive:             return "ID_case_sensitive";
444    case DW_ID_up_case:                    return "ID_up_case";
445    case DW_ID_down_case:                  return "ID_down_case";
446    case DW_ID_case_insensitive:           return "ID_case_insensitive";
447  }
448  llvm_unreachable("Unknown Dwarf Identifier Case");
449  return "";
450}
451
452/// ConventionString - Return the string for the specified calling convention.
453///
454const char *ConventionString(unsigned Convention) {
455   switch (Convention) {
456    case DW_CC_normal:                     return "CC_normal";
457    case DW_CC_program:                    return "CC_program";
458    case DW_CC_nocall:                     return "CC_nocall";
459    case DW_CC_lo_user:                    return "CC_lo_user";
460    case DW_CC_hi_user:                    return "CC_hi_user";
461  }
462  llvm_unreachable("Unknown Dwarf Calling Convention");
463  return "";
464}
465
466/// InlineCodeString - Return the string for the specified inline code.
467///
468const char *InlineCodeString(unsigned Code) {
469   switch (Code) {
470    case DW_INL_not_inlined:               return "INL_not_inlined";
471    case DW_INL_inlined:                   return "INL_inlined";
472    case DW_INL_declared_not_inlined:      return "INL_declared_not_inlined";
473    case DW_INL_declared_inlined:          return "INL_declared_inlined";
474  }
475  llvm_unreachable("Unknown Dwarf Inline Code");
476  return "";
477}
478
479/// ArrayOrderString - Return the string for the specified array order.
480///
481const char *ArrayOrderString(unsigned Order) {
482   switch (Order) {
483    case DW_ORD_row_major:                 return "ORD_row_major";
484    case DW_ORD_col_major:                 return "ORD_col_major";
485  }
486  llvm_unreachable("Unknown Dwarf Array Order");
487  return "";
488}
489
490/// DiscriminantString - Return the string for the specified discriminant
491/// descriptor.
492const char *DiscriminantString(unsigned Discriminant) {
493   switch (Discriminant) {
494    case DW_DSC_label:                     return "DSC_label";
495    case DW_DSC_range:                     return "DSC_range";
496  }
497  llvm_unreachable("Unknown Dwarf Discriminant Descriptor");
498  return "";
499}
500
501/// LNStandardString - Return the string for the specified line number standard.
502///
503const char *LNStandardString(unsigned Standard) {
504   switch (Standard) {
505    case DW_LNS_copy:                      return "LNS_copy";
506    case DW_LNS_advance_pc:                return "LNS_advance_pc";
507    case DW_LNS_advance_line:              return "LNS_advance_line";
508    case DW_LNS_set_file:                  return "LNS_set_file";
509    case DW_LNS_set_column:                return "LNS_set_column";
510    case DW_LNS_negate_stmt:               return "LNS_negate_stmt";
511    case DW_LNS_set_basic_block:           return "LNS_set_basic_block";
512    case DW_LNS_const_add_pc:              return "LNS_const_add_pc";
513    case DW_LNS_fixed_advance_pc:          return "LNS_fixed_advance_pc";
514    case DW_LNS_set_prologue_end:          return "LNS_set_prologue_end";
515    case DW_LNS_set_epilogue_begin:        return "LNS_set_epilogue_begin";
516    case DW_LNS_set_isa:                   return "LNS_set_isa";
517  }
518  llvm_unreachable("Unknown Dwarf Line Number Standard");
519  return "";
520}
521
522/// LNExtendedString - Return the string for the specified line number extended
523/// opcode encodings.
524const char *LNExtendedString(unsigned Encoding) {
525   switch (Encoding) {
526    // Line Number Extended Opcode Encodings
527    case DW_LNE_end_sequence:              return "LNE_end_sequence";
528    case DW_LNE_set_address:               return "LNE_set_address";
529    case DW_LNE_define_file:               return "LNE_define_file";
530    case DW_LNE_lo_user:                   return "LNE_lo_user";
531    case DW_LNE_hi_user:                   return "LNE_hi_user";
532  }
533  llvm_unreachable("Unknown Dwarf Line Number Extended Opcode Encoding");
534  return "";
535}
536
537/// MacinfoString - Return the string for the specified macinfo type encodings.
538///
539const char *MacinfoString(unsigned Encoding) {
540   switch (Encoding) {
541    // Macinfo Type Encodings
542    case DW_MACINFO_define:                return "MACINFO_define";
543    case DW_MACINFO_undef:                 return "MACINFO_undef";
544    case DW_MACINFO_start_file:            return "MACINFO_start_file";
545    case DW_MACINFO_end_file:              return "MACINFO_end_file";
546    case DW_MACINFO_vendor_ext:            return "MACINFO_vendor_ext";
547  }
548  llvm_unreachable("Unknown Dwarf Macinfo Type Encodings");
549  return "";
550}
551
552/// CallFrameString - Return the string for the specified call frame instruction
553/// encodings.
554const char *CallFrameString(unsigned Encoding) {
555   switch (Encoding) {
556    case DW_CFA_advance_loc:               return "CFA_advance_loc";
557    case DW_CFA_offset:                    return "CFA_offset";
558    case DW_CFA_restore:                   return "CFA_restore";
559    case DW_CFA_set_loc:                   return "CFA_set_loc";
560    case DW_CFA_advance_loc1:              return "CFA_advance_loc1";
561    case DW_CFA_advance_loc2:              return "CFA_advance_loc2";
562    case DW_CFA_advance_loc4:              return "CFA_advance_loc4";
563    case DW_CFA_offset_extended:           return "CFA_offset_extended";
564    case DW_CFA_restore_extended:          return "CFA_restore_extended";
565    case DW_CFA_undefined:                 return "CFA_undefined";
566    case DW_CFA_same_value:                return "CFA_same_value";
567    case DW_CFA_register:                  return "CFA_register";
568    case DW_CFA_remember_state:            return "CFA_remember_state";
569    case DW_CFA_restore_state:             return "CFA_restore_state";
570    case DW_CFA_def_cfa:                   return "CFA_def_cfa";
571    case DW_CFA_def_cfa_register:          return "CFA_def_cfa_register";
572    case DW_CFA_def_cfa_offset:            return "CFA_def_cfa_offset";
573    case DW_CFA_def_cfa_expression:        return "CFA_def_cfa_expression";
574    case DW_CFA_expression:                return "CFA_expression";
575    case DW_CFA_offset_extended_sf:        return "CFA_offset_extended_sf";
576    case DW_CFA_def_cfa_sf:                return "CFA_def_cfa_sf";
577    case DW_CFA_def_cfa_offset_sf:         return "CFA_def_cfa_offset_sf";
578    case DW_CFA_val_offset:                return "CFA_val_offset";
579    case DW_CFA_val_offset_sf:             return "CFA_val_offset_sf";
580    case DW_CFA_val_expression:            return "CFA_val_expression";
581    case DW_CFA_lo_user:                   return "CFA_lo_user";
582    case DW_CFA_hi_user:                   return "CFA_hi_user";
583  }
584  llvm_unreachable("Unknown Dwarf Call Frame Instruction Encodings");
585  return "";
586}
587
588} // End of namespace dwarf.
589
590} // End of namespace llvm.
591