Benjamin Kramer | 72c0d7f | 2011-09-13 19:42:23 +0000 | [diff] [blame] | 1 | //===-- DWARFFormValue.cpp ------------------------------------------------===// |
| 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 | |
Alexey Samsonov | cd61455 | 2013-04-17 08:29:02 +0000 | [diff] [blame^] | 10 | #include "llvm/DebugInfo/DWARFFormValue.h" |
Benjamin Kramer | 72c0d7f | 2011-09-13 19:42:23 +0000 | [diff] [blame] | 11 | #include "DWARFCompileUnit.h" |
Benjamin Kramer | 34f864f | 2011-09-15 16:57:13 +0000 | [diff] [blame] | 12 | #include "DWARFContext.h" |
Eric Christopher | 806e03d | 2012-11-07 23:22:07 +0000 | [diff] [blame] | 13 | #include "llvm/Support/Debug.h" |
Benjamin Kramer | 72c0d7f | 2011-09-13 19:42:23 +0000 | [diff] [blame] | 14 | #include "llvm/Support/Dwarf.h" |
| 15 | #include "llvm/Support/Format.h" |
| 16 | #include "llvm/Support/raw_ostream.h" |
| 17 | #include <cassert> |
| 18 | using namespace llvm; |
| 19 | using namespace dwarf; |
| 20 | |
Benjamin Kramer | acc897a | 2013-04-11 11:36:36 +0000 | [diff] [blame] | 21 | namespace { |
| 22 | template <uint8_t AddrSize, uint8_t RefAddrSize> struct FixedFormSizes { |
Alexey Samsonov | 32a3e78 | 2013-04-09 14:09:42 +0000 | [diff] [blame] | 23 | static const uint8_t sizes[]; |
| 24 | }; |
Benjamin Kramer | acc897a | 2013-04-11 11:36:36 +0000 | [diff] [blame] | 25 | } |
Alexey Samsonov | 32a3e78 | 2013-04-09 14:09:42 +0000 | [diff] [blame] | 26 | |
| 27 | template <uint8_t AddrSize, uint8_t RefAddrSize> |
| 28 | const uint8_t FixedFormSizes<AddrSize, RefAddrSize>::sizes[] = { |
Benjamin Kramer | 4aa3fea | 2011-09-13 21:47:32 +0000 | [diff] [blame] | 29 | 0, // 0x00 unused |
Alexey Samsonov | 32a3e78 | 2013-04-09 14:09:42 +0000 | [diff] [blame] | 30 | AddrSize, // 0x01 DW_FORM_addr |
Benjamin Kramer | 4aa3fea | 2011-09-13 21:47:32 +0000 | [diff] [blame] | 31 | 0, // 0x02 unused |
| 32 | 0, // 0x03 DW_FORM_block2 |
| 33 | 0, // 0x04 DW_FORM_block4 |
| 34 | 2, // 0x05 DW_FORM_data2 |
| 35 | 4, // 0x06 DW_FORM_data4 |
| 36 | 8, // 0x07 DW_FORM_data8 |
| 37 | 0, // 0x08 DW_FORM_string |
| 38 | 0, // 0x09 DW_FORM_block |
| 39 | 0, // 0x0a DW_FORM_block1 |
| 40 | 1, // 0x0b DW_FORM_data1 |
| 41 | 1, // 0x0c DW_FORM_flag |
| 42 | 0, // 0x0d DW_FORM_sdata |
| 43 | 4, // 0x0e DW_FORM_strp |
| 44 | 0, // 0x0f DW_FORM_udata |
Alexey Samsonov | 32a3e78 | 2013-04-09 14:09:42 +0000 | [diff] [blame] | 45 | RefAddrSize, // 0x10 DW_FORM_ref_addr |
Benjamin Kramer | 4aa3fea | 2011-09-13 21:47:32 +0000 | [diff] [blame] | 46 | 1, // 0x11 DW_FORM_ref1 |
| 47 | 2, // 0x12 DW_FORM_ref2 |
| 48 | 4, // 0x13 DW_FORM_ref4 |
| 49 | 8, // 0x14 DW_FORM_ref8 |
| 50 | 0, // 0x15 DW_FORM_ref_udata |
| 51 | 0, // 0x16 DW_FORM_indirect |
Eric Christopher | 3887a90 | 2012-08-24 01:14:23 +0000 | [diff] [blame] | 52 | 4, // 0x17 DW_FORM_sec_offset |
| 53 | 0, // 0x18 DW_FORM_exprloc |
| 54 | 0, // 0x19 DW_FORM_flag_present |
| 55 | 8, // 0x20 DW_FORM_ref_sig8 |
Benjamin Kramer | 72c0d7f | 2011-09-13 19:42:23 +0000 | [diff] [blame] | 56 | }; |
| 57 | |
Alexey Samsonov | 32a3e78 | 2013-04-09 14:09:42 +0000 | [diff] [blame] | 58 | static uint8_t getRefAddrSize(uint8_t AddrSize, uint16_t Version) { |
| 59 | // FIXME: Support DWARF64. |
| 60 | return (Version == 2) ? AddrSize : 4; |
| 61 | } |
Benjamin Kramer | 72c0d7f | 2011-09-13 19:42:23 +0000 | [diff] [blame] | 62 | |
| 63 | const uint8_t * |
Alexey Samsonov | 32a3e78 | 2013-04-09 14:09:42 +0000 | [diff] [blame] | 64 | DWARFFormValue::getFixedFormSizes(uint8_t AddrSize, uint16_t Version) { |
| 65 | uint8_t RefAddrSize = getRefAddrSize(AddrSize, Version); |
| 66 | if (AddrSize == 4 && RefAddrSize == 4) |
| 67 | return FixedFormSizes<4, 4>::sizes; |
| 68 | if (AddrSize == 4 && RefAddrSize == 8) |
| 69 | return FixedFormSizes<4, 8>::sizes; |
| 70 | if (AddrSize == 8 && RefAddrSize == 4) |
| 71 | return FixedFormSizes<8, 4>::sizes; |
| 72 | if (AddrSize == 8 && RefAddrSize == 8) |
| 73 | return FixedFormSizes<8, 8>::sizes; |
| 74 | return 0; |
Benjamin Kramer | 72c0d7f | 2011-09-13 19:42:23 +0000 | [diff] [blame] | 75 | } |
| 76 | |
| 77 | bool |
| 78 | DWARFFormValue::extractValue(DataExtractor data, uint32_t *offset_ptr, |
Benjamin Kramer | 89aedba | 2011-09-15 03:11:09 +0000 | [diff] [blame] | 79 | const DWARFCompileUnit *cu) { |
Benjamin Kramer | 4aa3fea | 2011-09-13 21:47:32 +0000 | [diff] [blame] | 80 | bool indirect = false; |
| 81 | bool is_block = false; |
| 82 | Value.data = NULL; |
| 83 | // Read the value for the form into value and follow and DW_FORM_indirect |
| 84 | // instances we run into |
| 85 | do { |
Benjamin Kramer | 89aedba | 2011-09-15 03:11:09 +0000 | [diff] [blame] | 86 | indirect = false; |
| 87 | switch (Form) { |
| 88 | case DW_FORM_addr: |
Eric Christopher | 806e03d | 2012-11-07 23:22:07 +0000 | [diff] [blame] | 89 | case DW_FORM_ref_addr: { |
Alexey Samsonov | 32a3e78 | 2013-04-09 14:09:42 +0000 | [diff] [blame] | 90 | uint16_t AddrSize = |
| 91 | (Form == DW_FORM_addr) |
| 92 | ? cu->getAddressByteSize() |
| 93 | : getRefAddrSize(cu->getAddressByteSize(), cu->getVersion()); |
| 94 | RelocAddrMap::const_iterator AI = cu->getRelocMap()->find(*offset_ptr); |
Eric Christopher | 82de10a | 2013-01-02 23:52:13 +0000 | [diff] [blame] | 95 | if (AI != cu->getRelocMap()->end()) { |
Eric Christopher | d1726a4 | 2012-11-12 21:40:38 +0000 | [diff] [blame] | 96 | const std::pair<uint8_t, int64_t> &R = AI->second; |
Alexey Samsonov | 32a3e78 | 2013-04-09 14:09:42 +0000 | [diff] [blame] | 97 | Value.uval = data.getUnsigned(offset_ptr, AddrSize) + R.second; |
Eric Christopher | d1726a4 | 2012-11-12 21:40:38 +0000 | [diff] [blame] | 98 | } else |
Alexey Samsonov | 32a3e78 | 2013-04-09 14:09:42 +0000 | [diff] [blame] | 99 | Value.uval = data.getUnsigned(offset_ptr, AddrSize); |
Benjamin Kramer | 89aedba | 2011-09-15 03:11:09 +0000 | [diff] [blame] | 100 | break; |
Alexey Samsonov | 4c0ae90 | 2012-11-12 14:25:36 +0000 | [diff] [blame] | 101 | } |
Eric Christopher | 3887a90 | 2012-08-24 01:14:23 +0000 | [diff] [blame] | 102 | case DW_FORM_exprloc: |
Benjamin Kramer | 89aedba | 2011-09-15 03:11:09 +0000 | [diff] [blame] | 103 | case DW_FORM_block: |
| 104 | Value.uval = data.getULEB128(offset_ptr); |
| 105 | is_block = true; |
| 106 | break; |
| 107 | case DW_FORM_block1: |
| 108 | Value.uval = data.getU8(offset_ptr); |
| 109 | is_block = true; |
| 110 | break; |
| 111 | case DW_FORM_block2: |
| 112 | Value.uval = data.getU16(offset_ptr); |
| 113 | is_block = true; |
| 114 | break; |
| 115 | case DW_FORM_block4: |
| 116 | Value.uval = data.getU32(offset_ptr); |
| 117 | is_block = true; |
| 118 | break; |
| 119 | case DW_FORM_data1: |
| 120 | case DW_FORM_ref1: |
| 121 | case DW_FORM_flag: |
| 122 | Value.uval = data.getU8(offset_ptr); |
| 123 | break; |
| 124 | case DW_FORM_data2: |
| 125 | case DW_FORM_ref2: |
| 126 | Value.uval = data.getU16(offset_ptr); |
| 127 | break; |
| 128 | case DW_FORM_data4: |
| 129 | case DW_FORM_ref4: |
| 130 | Value.uval = data.getU32(offset_ptr); |
| 131 | break; |
| 132 | case DW_FORM_data8: |
| 133 | case DW_FORM_ref8: |
| 134 | Value.uval = data.getU64(offset_ptr); |
| 135 | break; |
| 136 | case DW_FORM_sdata: |
| 137 | Value.sval = data.getSLEB128(offset_ptr); |
| 138 | break; |
Eric Christopher | 806e03d | 2012-11-07 23:22:07 +0000 | [diff] [blame] | 139 | case DW_FORM_strp: { |
Eric Christopher | d1726a4 | 2012-11-12 21:40:38 +0000 | [diff] [blame] | 140 | RelocAddrMap::const_iterator AI |
Eric Christopher | 82de10a | 2013-01-02 23:52:13 +0000 | [diff] [blame] | 141 | = cu->getRelocMap()->find(*offset_ptr); |
| 142 | if (AI != cu->getRelocMap()->end()) { |
Eric Christopher | d1726a4 | 2012-11-12 21:40:38 +0000 | [diff] [blame] | 143 | const std::pair<uint8_t, int64_t> &R = AI->second; |
Eric Christopher | 32b3768 | 2012-12-27 01:07:07 +0000 | [diff] [blame] | 144 | Value.uval = data.getU32(offset_ptr) + R.second; |
Eric Christopher | d1726a4 | 2012-11-12 21:40:38 +0000 | [diff] [blame] | 145 | } else |
Eric Christopher | 806e03d | 2012-11-07 23:22:07 +0000 | [diff] [blame] | 146 | Value.uval = data.getU32(offset_ptr); |
Benjamin Kramer | 89aedba | 2011-09-15 03:11:09 +0000 | [diff] [blame] | 147 | break; |
Eric Christopher | 806e03d | 2012-11-07 23:22:07 +0000 | [diff] [blame] | 148 | } |
Benjamin Kramer | 89aedba | 2011-09-15 03:11:09 +0000 | [diff] [blame] | 149 | case DW_FORM_udata: |
| 150 | case DW_FORM_ref_udata: |
| 151 | Value.uval = data.getULEB128(offset_ptr); |
| 152 | break; |
| 153 | case DW_FORM_string: |
| 154 | Value.cstr = data.getCStr(offset_ptr); |
| 155 | // Set the string value to also be the data for inlined cstr form |
| 156 | // values only so we can tell the differnence between DW_FORM_string |
| 157 | // and DW_FORM_strp form values |
Roman Divacky | 5932429 | 2012-09-05 22:26:57 +0000 | [diff] [blame] | 158 | Value.data = (const uint8_t*)Value.cstr; |
Benjamin Kramer | 89aedba | 2011-09-15 03:11:09 +0000 | [diff] [blame] | 159 | break; |
| 160 | case DW_FORM_indirect: |
| 161 | Form = data.getULEB128(offset_ptr); |
| 162 | indirect = true; |
| 163 | break; |
Eric Christopher | 9a9e73b | 2013-04-07 03:43:09 +0000 | [diff] [blame] | 164 | case DW_FORM_sec_offset: { |
Eric Christopher | d96c72a | 2013-01-17 02:59:59 +0000 | [diff] [blame] | 165 | // FIXME: This is 64-bit for DWARF64. |
Eric Christopher | 9a9e73b | 2013-04-07 03:43:09 +0000 | [diff] [blame] | 166 | RelocAddrMap::const_iterator AI |
| 167 | = cu->getRelocMap()->find(*offset_ptr); |
| 168 | if (AI != cu->getRelocMap()->end()) { |
| 169 | const std::pair<uint8_t, int64_t> &R = AI->second; |
| 170 | Value.uval = data.getU32(offset_ptr) + R.second; |
| 171 | } else |
| 172 | Value.uval = data.getU32(offset_ptr); |
Eric Christopher | 3887a90 | 2012-08-24 01:14:23 +0000 | [diff] [blame] | 173 | break; |
Eric Christopher | 9a9e73b | 2013-04-07 03:43:09 +0000 | [diff] [blame] | 174 | } |
Eric Christopher | 3887a90 | 2012-08-24 01:14:23 +0000 | [diff] [blame] | 175 | case DW_FORM_flag_present: |
| 176 | Value.uval = 1; |
| 177 | break; |
| 178 | case DW_FORM_ref_sig8: |
| 179 | Value.uval = data.getU64(offset_ptr); |
| 180 | break; |
Eric Christopher | 205e60b | 2012-11-16 23:44:11 +0000 | [diff] [blame] | 181 | case DW_FORM_GNU_addr_index: |
| 182 | Value.uval = data.getULEB128(offset_ptr); |
| 183 | break; |
| 184 | case DW_FORM_GNU_str_index: |
| 185 | Value.uval = data.getULEB128(offset_ptr); |
| 186 | break; |
Benjamin Kramer | 89aedba | 2011-09-15 03:11:09 +0000 | [diff] [blame] | 187 | default: |
| 188 | return false; |
| 189 | } |
Benjamin Kramer | 4aa3fea | 2011-09-13 21:47:32 +0000 | [diff] [blame] | 190 | } while (indirect); |
Benjamin Kramer | 72c0d7f | 2011-09-13 19:42:23 +0000 | [diff] [blame] | 191 | |
Benjamin Kramer | 4aa3fea | 2011-09-13 21:47:32 +0000 | [diff] [blame] | 192 | if (is_block) { |
| 193 | StringRef str = data.getData().substr(*offset_ptr, Value.uval); |
| 194 | Value.data = NULL; |
| 195 | if (!str.empty()) { |
| 196 | Value.data = reinterpret_cast<const uint8_t *>(str.data()); |
| 197 | *offset_ptr += Value.uval; |
| 198 | } |
| 199 | } |
| 200 | |
| 201 | return true; |
Benjamin Kramer | 72c0d7f | 2011-09-13 19:42:23 +0000 | [diff] [blame] | 202 | } |
| 203 | |
| 204 | bool |
| 205 | DWARFFormValue::skipValue(DataExtractor debug_info_data, uint32_t* offset_ptr, |
Benjamin Kramer | 89aedba | 2011-09-15 03:11:09 +0000 | [diff] [blame] | 206 | const DWARFCompileUnit *cu) const { |
Benjamin Kramer | 4aa3fea | 2011-09-13 21:47:32 +0000 | [diff] [blame] | 207 | return DWARFFormValue::skipValue(Form, debug_info_data, offset_ptr, cu); |
Benjamin Kramer | 72c0d7f | 2011-09-13 19:42:23 +0000 | [diff] [blame] | 208 | } |
| 209 | |
| 210 | bool |
| 211 | DWARFFormValue::skipValue(uint16_t form, DataExtractor debug_info_data, |
| 212 | uint32_t *offset_ptr, const DWARFCompileUnit *cu) { |
| 213 | bool indirect = false; |
| 214 | do { |
| 215 | indirect = false; |
| 216 | switch (form) { |
| 217 | // Blocks if inlined data that have a length field and the data bytes |
| 218 | // inlined in the .debug_info |
Eric Christopher | 3887a90 | 2012-08-24 01:14:23 +0000 | [diff] [blame] | 219 | case DW_FORM_exprloc: |
Benjamin Kramer | 72c0d7f | 2011-09-13 19:42:23 +0000 | [diff] [blame] | 220 | case DW_FORM_block: { |
| 221 | uint64_t size = debug_info_data.getULEB128(offset_ptr); |
| 222 | *offset_ptr += size; |
| 223 | return true; |
| 224 | } |
| 225 | case DW_FORM_block1: { |
| 226 | uint8_t size = debug_info_data.getU8(offset_ptr); |
| 227 | *offset_ptr += size; |
| 228 | return true; |
| 229 | } |
| 230 | case DW_FORM_block2: { |
| 231 | uint16_t size = debug_info_data.getU16(offset_ptr); |
| 232 | *offset_ptr += size; |
| 233 | return true; |
| 234 | } |
| 235 | case DW_FORM_block4: { |
| 236 | uint32_t size = debug_info_data.getU32(offset_ptr); |
| 237 | *offset_ptr += size; |
| 238 | return true; |
| 239 | } |
| 240 | |
| 241 | // Inlined NULL terminated C-strings |
| 242 | case DW_FORM_string: |
| 243 | debug_info_data.getCStr(offset_ptr); |
| 244 | return true; |
| 245 | |
| 246 | // Compile unit address sized values |
| 247 | case DW_FORM_addr: |
Benjamin Kramer | 72c0d7f | 2011-09-13 19:42:23 +0000 | [diff] [blame] | 248 | *offset_ptr += cu->getAddressByteSize(); |
| 249 | return true; |
Alexey Samsonov | 32a3e78 | 2013-04-09 14:09:42 +0000 | [diff] [blame] | 250 | case DW_FORM_ref_addr: |
| 251 | *offset_ptr += getRefAddrSize(cu->getAddressByteSize(), cu->getVersion()); |
| 252 | return true; |
Benjamin Kramer | 72c0d7f | 2011-09-13 19:42:23 +0000 | [diff] [blame] | 253 | |
Eric Christopher | 3887a90 | 2012-08-24 01:14:23 +0000 | [diff] [blame] | 254 | // 0 byte values - implied from the form. |
| 255 | case DW_FORM_flag_present: |
| 256 | return true; |
Eric Christopher | e7285c7 | 2013-01-07 22:40:48 +0000 | [diff] [blame] | 257 | |
Benjamin Kramer | 72c0d7f | 2011-09-13 19:42:23 +0000 | [diff] [blame] | 258 | // 1 byte values |
| 259 | case DW_FORM_data1: |
| 260 | case DW_FORM_flag: |
| 261 | case DW_FORM_ref1: |
| 262 | *offset_ptr += 1; |
| 263 | return true; |
| 264 | |
| 265 | // 2 byte values |
| 266 | case DW_FORM_data2: |
| 267 | case DW_FORM_ref2: |
| 268 | *offset_ptr += 2; |
| 269 | return true; |
| 270 | |
| 271 | // 4 byte values |
| 272 | case DW_FORM_strp: |
| 273 | case DW_FORM_data4: |
| 274 | case DW_FORM_ref4: |
| 275 | *offset_ptr += 4; |
| 276 | return true; |
| 277 | |
| 278 | // 8 byte values |
| 279 | case DW_FORM_data8: |
| 280 | case DW_FORM_ref8: |
Eric Christopher | 3887a90 | 2012-08-24 01:14:23 +0000 | [diff] [blame] | 281 | case DW_FORM_ref_sig8: |
Benjamin Kramer | 72c0d7f | 2011-09-13 19:42:23 +0000 | [diff] [blame] | 282 | *offset_ptr += 8; |
| 283 | return true; |
| 284 | |
| 285 | // signed or unsigned LEB 128 values |
| 286 | // case DW_FORM_APPLE_db_str: |
| 287 | case DW_FORM_sdata: |
| 288 | case DW_FORM_udata: |
| 289 | case DW_FORM_ref_udata: |
Eric Christopher | dd8e9f3 | 2013-01-07 19:32:41 +0000 | [diff] [blame] | 290 | case DW_FORM_GNU_str_index: |
| 291 | case DW_FORM_GNU_addr_index: |
Benjamin Kramer | 72c0d7f | 2011-09-13 19:42:23 +0000 | [diff] [blame] | 292 | debug_info_data.getULEB128(offset_ptr); |
| 293 | return true; |
| 294 | |
| 295 | case DW_FORM_indirect: |
| 296 | indirect = true; |
| 297 | form = debug_info_data.getULEB128(offset_ptr); |
| 298 | break; |
Eric Christopher | 3887a90 | 2012-08-24 01:14:23 +0000 | [diff] [blame] | 299 | |
Eric Christopher | 446b88f | 2013-01-17 03:00:04 +0000 | [diff] [blame] | 300 | // FIXME: 4 for DWARF32, 8 for DWARF64. |
Eric Christopher | 3887a90 | 2012-08-24 01:14:23 +0000 | [diff] [blame] | 301 | case DW_FORM_sec_offset: |
Eric Christopher | 446b88f | 2013-01-17 03:00:04 +0000 | [diff] [blame] | 302 | *offset_ptr += 4; |
Eric Christopher | 3887a90 | 2012-08-24 01:14:23 +0000 | [diff] [blame] | 303 | return true; |
Eric Christopher | e7285c7 | 2013-01-07 22:40:48 +0000 | [diff] [blame] | 304 | |
Benjamin Kramer | 72c0d7f | 2011-09-13 19:42:23 +0000 | [diff] [blame] | 305 | default: |
| 306 | return false; |
| 307 | } |
| 308 | } while (indirect); |
| 309 | return true; |
| 310 | } |
| 311 | |
| 312 | void |
Benjamin Kramer | 34f864f | 2011-09-15 16:57:13 +0000 | [diff] [blame] | 313 | DWARFFormValue::dump(raw_ostream &OS, const DWARFCompileUnit *cu) const { |
Eric Christopher | 82de10a | 2013-01-02 23:52:13 +0000 | [diff] [blame] | 314 | DataExtractor debug_str_data(cu->getStringSection(), true, 0); |
Eric Christopher | dd8e9f3 | 2013-01-07 19:32:41 +0000 | [diff] [blame] | 315 | DataExtractor debug_str_offset_data(cu->getStringOffsetSection(), true, 0); |
Benjamin Kramer | 72c0d7f | 2011-09-13 19:42:23 +0000 | [diff] [blame] | 316 | uint64_t uvalue = getUnsigned(); |
| 317 | bool cu_relative_offset = false; |
| 318 | |
Benjamin Kramer | 4aa3fea | 2011-09-13 21:47:32 +0000 | [diff] [blame] | 319 | switch (Form) { |
Benjamin Kramer | 5eccd36 | 2011-11-05 16:01:13 +0000 | [diff] [blame] | 320 | case DW_FORM_addr: OS << format("0x%016" PRIx64, uvalue); break; |
Eric Christopher | 72f7bfb | 2013-01-15 23:56:56 +0000 | [diff] [blame] | 321 | case DW_FORM_GNU_addr_index: { |
| 322 | StringRef AddrOffsetSec = cu->getAddrOffsetSection(); |
| 323 | OS << format(" indexed (%8.8x) address = ", (uint32_t)uvalue); |
| 324 | if (AddrOffsetSec.size() != 0) { |
| 325 | DataExtractor DA(AddrOffsetSec, true, cu->getAddressByteSize()); |
| 326 | OS << format("0x%016" PRIx64, getIndirectAddress(&DA, cu)); |
| 327 | } else |
| 328 | OS << "<no .debug_addr section>"; |
| 329 | break; |
| 330 | } |
Eric Christopher | 3887a90 | 2012-08-24 01:14:23 +0000 | [diff] [blame] | 331 | case DW_FORM_flag_present: OS << "true"; break; |
Benjamin Kramer | 72c0d7f | 2011-09-13 19:42:23 +0000 | [diff] [blame] | 332 | case DW_FORM_flag: |
Benjamin Kramer | 5eccd36 | 2011-11-05 16:01:13 +0000 | [diff] [blame] | 333 | case DW_FORM_data1: OS << format("0x%02x", (uint8_t)uvalue); break; |
| 334 | case DW_FORM_data2: OS << format("0x%04x", (uint16_t)uvalue); break; |
| 335 | case DW_FORM_data4: OS << format("0x%08x", (uint32_t)uvalue); break; |
Eric Christopher | 3887a90 | 2012-08-24 01:14:23 +0000 | [diff] [blame] | 336 | case DW_FORM_ref_sig8: |
Benjamin Kramer | 5eccd36 | 2011-11-05 16:01:13 +0000 | [diff] [blame] | 337 | case DW_FORM_data8: OS << format("0x%016" PRIx64, uvalue); break; |
Benjamin Kramer | 72c0d7f | 2011-09-13 19:42:23 +0000 | [diff] [blame] | 338 | case DW_FORM_string: |
| 339 | OS << '"'; |
| 340 | OS.write_escaped(getAsCString(NULL)); |
| 341 | OS << '"'; |
| 342 | break; |
Eric Christopher | 3887a90 | 2012-08-24 01:14:23 +0000 | [diff] [blame] | 343 | case DW_FORM_exprloc: |
Benjamin Kramer | 72c0d7f | 2011-09-13 19:42:23 +0000 | [diff] [blame] | 344 | case DW_FORM_block: |
| 345 | case DW_FORM_block1: |
| 346 | case DW_FORM_block2: |
| 347 | case DW_FORM_block4: |
| 348 | if (uvalue > 0) { |
| 349 | switch (Form) { |
Eric Christopher | 3887a90 | 2012-08-24 01:14:23 +0000 | [diff] [blame] | 350 | case DW_FORM_exprloc: |
Benjamin Kramer | 41a9649 | 2011-11-05 08:57:40 +0000 | [diff] [blame] | 351 | case DW_FORM_block: OS << format("<0x%" PRIx64 "> ", uvalue); break; |
Benjamin Kramer | 72c0d7f | 2011-09-13 19:42:23 +0000 | [diff] [blame] | 352 | case DW_FORM_block1: OS << format("<0x%2.2x> ", (uint8_t)uvalue); break; |
| 353 | case DW_FORM_block2: OS << format("<0x%4.4x> ", (uint16_t)uvalue); break; |
| 354 | case DW_FORM_block4: OS << format("<0x%8.8x> ", (uint32_t)uvalue); break; |
| 355 | default: break; |
| 356 | } |
| 357 | |
| 358 | const uint8_t* data_ptr = Value.data; |
| 359 | if (data_ptr) { |
| 360 | // uvalue contains size of block |
| 361 | const uint8_t* end_data_ptr = data_ptr + uvalue; |
| 362 | while (data_ptr < end_data_ptr) { |
| 363 | OS << format("%2.2x ", *data_ptr); |
| 364 | ++data_ptr; |
| 365 | } |
| 366 | } |
| 367 | else |
| 368 | OS << "NULL"; |
| 369 | } |
| 370 | break; |
| 371 | |
| 372 | case DW_FORM_sdata: OS << getSigned(); break; |
| 373 | case DW_FORM_udata: OS << getUnsigned(); break; |
Benjamin Kramer | 34f864f | 2011-09-15 16:57:13 +0000 | [diff] [blame] | 374 | case DW_FORM_strp: { |
| 375 | OS << format(" .debug_str[0x%8.8x] = ", (uint32_t)uvalue); |
| 376 | const char* dbg_str = getAsCString(&debug_str_data); |
| 377 | if (dbg_str) { |
| 378 | OS << '"'; |
| 379 | OS.write_escaped(dbg_str); |
| 380 | OS << '"'; |
Benjamin Kramer | 72c0d7f | 2011-09-13 19:42:23 +0000 | [diff] [blame] | 381 | } |
| 382 | break; |
Benjamin Kramer | 34f864f | 2011-09-15 16:57:13 +0000 | [diff] [blame] | 383 | } |
Eric Christopher | dd8e9f3 | 2013-01-07 19:32:41 +0000 | [diff] [blame] | 384 | case DW_FORM_GNU_str_index: { |
| 385 | OS << format(" indexed (%8.8x) string = ", (uint32_t)uvalue); |
| 386 | const char *dbg_str = getIndirectCString(&debug_str_data, |
| 387 | &debug_str_offset_data); |
| 388 | if (dbg_str) { |
| 389 | OS << '"'; |
| 390 | OS.write_escaped(dbg_str); |
| 391 | OS << '"'; |
| 392 | } |
| 393 | break; |
| 394 | } |
Benjamin Kramer | 72c0d7f | 2011-09-13 19:42:23 +0000 | [diff] [blame] | 395 | case DW_FORM_ref_addr: |
Benjamin Kramer | 5eccd36 | 2011-11-05 16:01:13 +0000 | [diff] [blame] | 396 | OS << format("0x%016" PRIx64, uvalue); |
Benjamin Kramer | 72c0d7f | 2011-09-13 19:42:23 +0000 | [diff] [blame] | 397 | break; |
| 398 | case DW_FORM_ref1: |
| 399 | cu_relative_offset = true; |
| 400 | OS << format("cu + 0x%2.2x", (uint8_t)uvalue); |
| 401 | break; |
| 402 | case DW_FORM_ref2: |
| 403 | cu_relative_offset = true; |
| 404 | OS << format("cu + 0x%4.4x", (uint16_t)uvalue); |
| 405 | break; |
| 406 | case DW_FORM_ref4: |
| 407 | cu_relative_offset = true; |
| 408 | OS << format("cu + 0x%4.4x", (uint32_t)uvalue); |
| 409 | break; |
| 410 | case DW_FORM_ref8: |
| 411 | cu_relative_offset = true; |
Benjamin Kramer | 41a9649 | 2011-11-05 08:57:40 +0000 | [diff] [blame] | 412 | OS << format("cu + 0x%8.8" PRIx64, uvalue); |
Benjamin Kramer | 72c0d7f | 2011-09-13 19:42:23 +0000 | [diff] [blame] | 413 | break; |
| 414 | case DW_FORM_ref_udata: |
| 415 | cu_relative_offset = true; |
Benjamin Kramer | 41a9649 | 2011-11-05 08:57:40 +0000 | [diff] [blame] | 416 | OS << format("cu + 0x%" PRIx64, uvalue); |
Benjamin Kramer | 72c0d7f | 2011-09-13 19:42:23 +0000 | [diff] [blame] | 417 | break; |
| 418 | |
| 419 | // All DW_FORM_indirect attributes should be resolved prior to calling |
| 420 | // this function |
| 421 | case DW_FORM_indirect: |
| 422 | OS << "DW_FORM_indirect"; |
| 423 | break; |
Eric Christopher | 3887a90 | 2012-08-24 01:14:23 +0000 | [diff] [blame] | 424 | |
Eric Christopher | 446b88f | 2013-01-17 03:00:04 +0000 | [diff] [blame] | 425 | // Should be formatted to 64-bit for DWARF64. |
Eric Christopher | 3887a90 | 2012-08-24 01:14:23 +0000 | [diff] [blame] | 426 | case DW_FORM_sec_offset: |
Eric Christopher | 446b88f | 2013-01-17 03:00:04 +0000 | [diff] [blame] | 427 | OS << format("0x%08x", (uint32_t)uvalue); |
Eric Christopher | 3887a90 | 2012-08-24 01:14:23 +0000 | [diff] [blame] | 428 | break; |
Eric Christopher | e7285c7 | 2013-01-07 22:40:48 +0000 | [diff] [blame] | 429 | |
Benjamin Kramer | 72c0d7f | 2011-09-13 19:42:23 +0000 | [diff] [blame] | 430 | default: |
| 431 | OS << format("DW_FORM(0x%4.4x)", Form); |
| 432 | break; |
| 433 | } |
| 434 | |
| 435 | if (cu_relative_offset) |
Benjamin Kramer | e25a2bd | 2012-04-04 20:33:56 +0000 | [diff] [blame] | 436 | OS << format(" => {0x%8.8" PRIx64 "}", uvalue + (cu ? cu->getOffset() : 0)); |
Benjamin Kramer | 72c0d7f | 2011-09-13 19:42:23 +0000 | [diff] [blame] | 437 | } |
| 438 | |
| 439 | const char* |
| 440 | DWARFFormValue::getAsCString(const DataExtractor *debug_str_data_ptr) const { |
| 441 | if (isInlinedCStr()) { |
| 442 | return Value.cstr; |
| 443 | } else if (debug_str_data_ptr) { |
| 444 | uint32_t offset = Value.uval; |
| 445 | return debug_str_data_ptr->getCStr(&offset); |
| 446 | } |
| 447 | return NULL; |
| 448 | } |
| 449 | |
Eric Christopher | dd8e9f3 | 2013-01-07 19:32:41 +0000 | [diff] [blame] | 450 | const char* |
| 451 | DWARFFormValue::getIndirectCString(const DataExtractor *DS, |
| 452 | const DataExtractor *DSO) const { |
| 453 | if (!DS || !DSO) return NULL; |
| 454 | |
| 455 | uint32_t offset = Value.uval * 4; |
Eric Christopher | 72f7bfb | 2013-01-15 23:56:56 +0000 | [diff] [blame] | 456 | uint32_t soffset = DSO->getU32(&offset); |
Eric Christopher | dd8e9f3 | 2013-01-07 19:32:41 +0000 | [diff] [blame] | 457 | return DS->getCStr(&soffset); |
| 458 | } |
| 459 | |
Eric Christopher | 72f7bfb | 2013-01-15 23:56:56 +0000 | [diff] [blame] | 460 | uint64_t |
| 461 | DWARFFormValue::getIndirectAddress(const DataExtractor *DA, |
| 462 | const DWARFCompileUnit *cu) const { |
| 463 | if (!DA) return 0; |
| 464 | |
| 465 | uint32_t offset = Value.uval * cu->getAddressByteSize(); |
| 466 | return DA->getAddress(&offset); |
| 467 | } |
| 468 | |
Benjamin Kramer | 4aa3fea | 2011-09-13 21:47:32 +0000 | [diff] [blame] | 469 | uint64_t DWARFFormValue::getReference(const DWARFCompileUnit *cu) const { |
| 470 | uint64_t die_offset = Value.uval; |
| 471 | switch (Form) { |
| 472 | case DW_FORM_ref1: |
| 473 | case DW_FORM_ref2: |
| 474 | case DW_FORM_ref4: |
| 475 | case DW_FORM_ref8: |
| 476 | case DW_FORM_ref_udata: |
| 477 | die_offset += (cu ? cu->getOffset() : 0); |
| 478 | break; |
| 479 | default: |
| 480 | break; |
| 481 | } |
Benjamin Kramer | 72c0d7f | 2011-09-13 19:42:23 +0000 | [diff] [blame] | 482 | |
Benjamin Kramer | 4aa3fea | 2011-09-13 21:47:32 +0000 | [diff] [blame] | 483 | return die_offset; |
Benjamin Kramer | 72c0d7f | 2011-09-13 19:42:23 +0000 | [diff] [blame] | 484 | } |
| 485 | |
| 486 | bool |
Benjamin Kramer | 89aedba | 2011-09-15 03:11:09 +0000 | [diff] [blame] | 487 | DWARFFormValue::resolveCompileUnitReferences(const DWARFCompileUnit *cu) { |
| 488 | switch (Form) { |
| 489 | case DW_FORM_ref1: |
| 490 | case DW_FORM_ref2: |
| 491 | case DW_FORM_ref4: |
| 492 | case DW_FORM_ref8: |
| 493 | case DW_FORM_ref_udata: |
| 494 | Value.uval += cu->getOffset(); |
| 495 | Form = DW_FORM_ref_addr; |
| 496 | return true; |
| 497 | default: |
| 498 | break; |
| 499 | } |
| 500 | return false; |
Benjamin Kramer | 72c0d7f | 2011-09-13 19:42:23 +0000 | [diff] [blame] | 501 | } |
| 502 | |
| 503 | const uint8_t *DWARFFormValue::BlockData() const { |
Benjamin Kramer | 4aa3fea | 2011-09-13 21:47:32 +0000 | [diff] [blame] | 504 | if (!isInlinedCStr()) |
Benjamin Kramer | 89aedba | 2011-09-15 03:11:09 +0000 | [diff] [blame] | 505 | return Value.data; |
Benjamin Kramer | 4aa3fea | 2011-09-13 21:47:32 +0000 | [diff] [blame] | 506 | return NULL; |
Benjamin Kramer | 72c0d7f | 2011-09-13 19:42:23 +0000 | [diff] [blame] | 507 | } |
| 508 | |
| 509 | bool DWARFFormValue::isBlockForm(uint16_t form) { |
Benjamin Kramer | 4aa3fea | 2011-09-13 21:47:32 +0000 | [diff] [blame] | 510 | switch (form) { |
Eric Christopher | 3887a90 | 2012-08-24 01:14:23 +0000 | [diff] [blame] | 511 | case DW_FORM_exprloc: |
Benjamin Kramer | 4aa3fea | 2011-09-13 21:47:32 +0000 | [diff] [blame] | 512 | case DW_FORM_block: |
| 513 | case DW_FORM_block1: |
| 514 | case DW_FORM_block2: |
| 515 | case DW_FORM_block4: |
| 516 | return true; |
| 517 | } |
| 518 | return false; |
Benjamin Kramer | 72c0d7f | 2011-09-13 19:42:23 +0000 | [diff] [blame] | 519 | } |
| 520 | |
| 521 | bool DWARFFormValue::isDataForm(uint16_t form) { |
Benjamin Kramer | 4aa3fea | 2011-09-13 21:47:32 +0000 | [diff] [blame] | 522 | switch (form) { |
| 523 | case DW_FORM_sdata: |
| 524 | case DW_FORM_udata: |
| 525 | case DW_FORM_data1: |
| 526 | case DW_FORM_data2: |
| 527 | case DW_FORM_data4: |
| 528 | case DW_FORM_data8: |
| 529 | return true; |
| 530 | } |
| 531 | return false; |
Benjamin Kramer | 72c0d7f | 2011-09-13 19:42:23 +0000 | [diff] [blame] | 532 | } |