| ... | ... | @@ -1377,9 +1377,13 @@ pub const DwarfInfo = struct { |
| 1377 | 1377 | if (compile_unit.pc_range) |range| { |
| 1378 | 1378 | if (target_address >= range.start and target_address < range.end) return compile_unit; |
| 1379 | 1379 | } |
| 1380 | | if (compile_unit.die.getAttrSecOffset(DW.AT_ranges)) |ranges_offset| { |
| 1381 | | var base_address: usize = 0; |
| 1382 | | if (di.debug_ranges) |debug_ranges| { |
| 1380 | if (di.debug_ranges) |debug_ranges| { |
| 1381 | if (compile_unit.die.getAttrSecOffset(DW.AT_ranges)) |ranges_offset| { |
| 1382 | // All the addresses in the list are relative to the value |
| 1383 | // specified by DW_AT_low_pc or to some other value encoded |
| 1384 | // in the list itself |
| 1385 | var base_address = try compile_unit.die.getAttrAddr(DW.AT_low_pc); |
| 1386 | |
| 1383 | 1387 | try di.dwarf_seekable_stream.seekTo(debug_ranges.offset + ranges_offset); |
| 1384 | 1388 | while (true) { |
| 1385 | 1389 | const begin_addr = try di.dwarf_in_stream.readIntLittle(usize); |
| ... | ... | @@ -1387,18 +1391,21 @@ pub const DwarfInfo = struct { |
| 1387 | 1391 | if (begin_addr == 0 and end_addr == 0) { |
| 1388 | 1392 | break; |
| 1389 | 1393 | } |
| 1394 | // This entry selects a new value for the base address |
| 1390 | 1395 | if (begin_addr == maxInt(usize)) { |
| 1391 | | base_address = begin_addr; |
| 1396 | base_address = end_addr; |
| 1392 | 1397 | continue; |
| 1393 | 1398 | } |
| 1394 | | if (target_address >= begin_addr and target_address < end_addr) { |
| 1399 | if (target_address >= base_address + begin_addr and target_address < base_address + end_addr) { |
| 1395 | 1400 | return compile_unit; |
| 1396 | 1401 | } |
| 1397 | 1402 | } |
| 1403 | |
| 1404 | return error.InvalidDebugInfo; |
| 1405 | } else |err| { |
| 1406 | if (err != error.MissingDebugInfo) return err; |
| 1407 | continue; |
| 1398 | 1408 | } |
| 1399 | | } else |err| { |
| 1400 | | if (err != error.MissingDebugInfo) return err; |
| 1401 | | continue; |
| 1402 | 1409 | } |
| 1403 | 1410 | } |
| 1404 | 1411 | return error.MissingDebugInfo; |
LemonBoy <thatlemon@gmail.com> 2020-01-25 14:06:46+01:00
Andrew Kelley <andrew@ziglang.org> 2020-01-25 16:12:11-05:00
lib