1 CV8 structures (for x86 and AMD64) - used by MSVC 8 (2005) 2 Everything listed in the order MASM seems to output it in. 3 4 .debug$S: symbol and line number information 5 4 bytes - version (4) 6 7 Each major portion of DEBUG$S starts with 4 byte type, 4 byte length 8 (in bytes following the length field). Each set is 4-byte aligned with 0s at 9 the end (not included in length). 10 11 0x000000F3: source filename string table 12 1 byte - 0 (0th filename) 13 0-terminated filename strings, 1 for each source file 14 15 0x000000F4: source file info 16 for each source file: 17 4 bytes - offset of filename in source filename string table 18 {2 bytes - checksum type/length? (0x0110) 19 16 bytes - MD5 checksum of source file} OR 20 {2 bytes - no checksum (0)} 21 2 bytes - 0 (padding?) 22 23 0x000000F2: line numbers for section 24 4 bytes - start offset in section (SECREL to section start) 25 2 bytes - section index (SECTION to section start) 26 2 bytes - pad/align (0) 27 4 bytes - section length covered by line number info 28 4 bytes - offset of source file in source file info table 29 4 bytes - number of line number pairs 30 4 bytes - number of bytes of line number pairs + 12 31 32 followed by pairs of: 33 4 bytes - offset in section 34 4 bytes - line number; if high bit is set, 35 end of statement/breakpointable (?) - e.g. lines containing 36 just labels should have line numbers 37 38 0x000000F1: symbol information 39 enclosed data per below 40 (each element starts with 2 byte length, 2 byte type) 41 basically slightly updated versions of CV5 symbol info with 0-terminated 42 rather than length-prefixed strings 43 44 0x1101 : Name of object file 45 4 byte signature (0 for asm) 46 0-terminated object filename 47 0x1116 : creator signature (compile flag) 48 4 bytes - language (3=Masm) 49 4 bytes - target processor (0xD0 = AMD64) 50 4 bytes - flags 51 4 bytes - version 52 2 bytes - ? 53 0-terminated string containing creator name 54 pairs of 0-terminated strings - keys/values 55 from CL: 56 cwd - current working directory 57 cl - full path of compiler executable 58 cmd - full args (one long string, double-quoted args if needed) 59 src - relative path to source (from cwd) 60 pdb - full path to pdb file 61 ML doesn't output any pairs 62 pairs list terminated with two empty strings 63 0x1105 : Code Label 16:32/64 64 4 bytes SECREL of symbol 65 2 bytes SECTION of symbol 66 1 byte - flags 67 0-terminated string containing symbol name 68 0x110C : local data 16:32/64 69 4 bytes type index of symbol 70 4 bytes SECREL of symbol 71 2 bytes SECTION of symbol 72 0-terminated string containing symbol name 73 0x110D : global data 16:32/64 74 4 bytes type index of symbol 75 4 bytes SECREL of symbol 76 2 bytes SECTION of symbol 77 0-terminated string containing symbol name 78 0x1110 : local/global (?) procedure start 16:32/64 79 4 bytes - parent 80 4 bytes - pend 81 4 bytes - pnext 82 4 bytes - procedure length (bytes) 83 4 bytes - debug start (offset from procedure start to frame setup) 84 4 bytes - debug end (offset from procedure start to frame cleanup) 85 4 bytes - type index of procedure type 86 4 bytes - offset of procedure (SECREL of symbol) 87 2 bytes - segment of procedure (SECTION of symbol) 88 1 byte - flags 89 0-terminated string containing procedure name 90 91 .debug$T: type information 92 4 bytes - version (4) 93 followed by type information per CV5 spec, padded to 4-byte boundaries 94 95
