v1.11 Wed Jun 2017 5a57eb074170 man-pages: Update URL to the dwarves paper b52386d041fa dwarves_fprintf: Find holes when expanding types 103e89bb257d dwarves_fprintf: Find holes on structs embedded in other structs ab97c07a7ebe dwarves_fprintf: Fixup cacheline boundary printing on expanded structs 046ad67af383 dwarves_fprintf: Shorten class__fprintf() sig 44130bf70e1c dwarves: Update e-mail address 327757975b94 dwarf_loader: Add URL for template tags description f4d5e21fd1b2 dwarf_loader: Tidy up template tags usage e12bf9999944 dwarf_loader: Do not hash unsupported tags 3afcfbec9e08 dwarf_loader: Add DW_TAG_GNU_formal_parameter_pack stub in process_function 55d9b20dbaf6 dwarf_loader: Ignore DW_TAG_dwarf_procedure when processing functions 45618c7ec122 dwarf_loader: Initial support for DW_TAG_unspecified_type 658a238b9890 dwarf_loader: Stop emitting warnings about DW_TAG_call_site 0fbb39291d59 dwarf_loader: Add support for DW_TAG_restrict_type 9df42c68265d dwarves: Initial support for rvalue_reference_type 8af5ccd86d21 dwarves: Use cus__fprintf_load_files_err() in the remaining tools 10515a7c4db7 dwarves: Introduce cus__fprintf_load_files_err() 0e6463635082 pahole: Show more informative message when errno is properly set on error 2566cc2c8715 pdwtags: Show proper error messages for files it can't handle 9f3f67e78679 dwarves: Fix cus__load_files() error return ae3a2720c3d3 dutil: Add ____ilog2_NaN declaration to silence compiler warning 0b81b5ad4743 Update version in CMakeLists.txt 79536f4f9587 cmake: Use INTERFACE_LINK_LIBRARIES 1decb1bc4a41 dwarf_loader: Check cu__find_type_by_ref result 956343d05a41 Add instructions on how to build with debug info e71353c3fa0a dwarf_loader: Ignore DW_TAG_dwarf_procedure 189695907242 dwarves_fprintf: Add the missing GNU_ suffix to DWARF_TAG_ created by the GNU project d973b1d5daf0 dwarf_fprintf: Handle DW_TAG_GNU_call_site{_parameter} c23eab4b1253 dwarf_loader: Print unknown tags as an hex number 943a0de0679a dwarves_fprintf: DW_TAG_mutable_type doesn't exist. a8e562a15767 dwarf_loader: Use obstack_zalloc when allocating tag fd3838ae9aa3 dwarves: Stop using 'self' 5ecf1aab9e10 dwarf_loader: Support DW_FORM_data{4,8} for reading class member offsets c4ccdd5ae63b dwarves_reorganize: Fix member type fixup e31fda3063e3 dwarves_reorganize: Fixup calculation of bytes needed for bitfield 1e461ec7e0e8 dwarves_fprintf: Fix printf types on 64bit linux 222f0067a9c3 dwarves_fprintf: Don't ignore virtual data members e512e3f9b36b dwarves: Update git url 8c6378fd8834 dwarves: Support static class data members a54515fa6ee4 dwarves: Stop using 'self' 6035b0d91f19 rpm: Add missing BuildRequires: zlib-devel be7b691756ff dwarf_loader: Don't stop processing after finding unsupported tag v1.10 Wed May 30 2012 . Initial DWARF4 support, by Tom Tromey . Add stubs for some new GNU Tags . Fix build on older systems . Fix a crash when pahole is called with -R -S, from Tal Kelrich v1.9: Ignore DW_TAG_template_{type,value}_parameter, fixing a bug reported at: https://bugzilla.redhat.com/show_bug.cgi?id=654471 More work is needed to properly support these tags. ----------------------------------------- After a long time without a new release because I was trying to get the CTF support completed, and due to the very strong gravity force in the Linux kernel perf tools, here it is 1.8, with lots of performance improvements, bug fixes and changes to better use these tools in scripts. For full details please take a look at the git changesets, repo available at: http://git.kernel.org/cgit/devel/pahole/pahole.git - Arnaldo pahole: . Allow list of structs to be passed to pahole. E.g.: 'pahole -C str_node,strings' Suggested by Zack Weinberg , for scripting. . Introduce --hex to print offsets and sizes in hexadecimal codiff: . Improve detection of removal and addition of members in structs . Detect changes in padding and the number of holes/bit_holes pfunct: . --no_parm_names Because CTF doesn't encodes the names of the parameters and I want to test the upcoming CTF function section code in ctftwdiff. . pfunct --addr Using an rbtree to find in which function the given addr is. libdwarves: . Greatly reduce the data structures footprint and lookup by recoding the IDs as short integers, that was done to facilitate support for CTF but benefited the core libraries greatly. . Handle GCC support for vector instructions So now it recognizes, as printed by pdwtags: 908 typedef int __m64 __attribute__ ((__vector_size__ (8))); size: 8 909 int array __attribute__ ((__vector_size__ (8))); size: 8 910 int array __attribute__ ((__vector_size__ (4))); size: 4 911 short int array __attribute__ ((__vector_size__ (2))); size: 2 912 char array __attribute__ ((__vector_size__ (1))); size: 1 . Destructors were added so that no leaks are left if this library is to be used in other tools that don't end the program when done using this lib. . Allow the tools to pass a callback that is used after loading each object file (CU/Compile Unit), so that we can more quickly find tags and stop the processing sooner, or at least delete the CU if it doesn't have anything needed by the tool. This _greatly_ speeded up most of the tools. . Tools now can pass a debug format "path", specifying the order it wants to try, so that if a file have both DWARF and CTF, specifying 'ctf,dwarf' will use the CTF info. . Now the formatting routines are in a separate file, dwarves_fprintf.c. This was done for organizational purposes but also to pave the way for multiple formatting backends, so that we can print, for instance, in CSV the structs, for easier scripting like done by several folks out there. . Handle volatile typedef bitfields, like: struct _GClosure { volatile guint ref_count:15; /* 0:17 4 */ volatile guint meta_marshal:1; /* 0:16 4 */ volatile guint n_guards:1; /* 0:15 4 */ . Load java 'interfaces' as a struct/class. . Fix buffer expansion bug, detected thanks to boost that provided things like: virtual int undefine(class grammar_helper > *); /* linkage=_ZN5boost6spirit4impl14grammar_helperINS0_7grammarINS_6detail5graph11dot_skipperENS0_14parser_contextINS0_5nil_tEEEEES6_NS0_7scannerINS0_10multi_passISt16istream_i */ . Allow optional addr information loading, speeding up some apps that don't use such addresses (or in modes where addrs aren't used) such as pahole. . Use a obstacks, speeding up apps as measured with the perf tools. . Support zero sized arrays in the middle of a struct. . Fix padding calculation in the reorganize routines. . Fix bitfield demotion in the reorganize routines. . Support "using" pointing to data members (C++). . Properly support pointers to const, reported by Jan Engelhardt : . Support more compact DW_AT_data_member_location form, pointed out by Mark Wielaard and reported by Mike Snitzer Experimental CTF support: libdwarves was reorganized so that it can support multiple debugging formats, with the first one being supported being the Compact C Type Format that comes from the OpenSolaris world. David S. Miller contributed an initial CTF decoder and from there I wrote an encoder. To test this a regression testing harness (regtest in the sources) that will take files with DWARF info and from there encode its contents in CTF in another ELF section in the same file (.SUN_ctf). Then it will decode both the DWARF and CTF sections and compare the results for pahole running with some new flags that cope with some subtleties in the way CTF encodes things. --flat_arrays We have just one dimension in CTF, with the total number of entries, in DWARF we can express this, but not in CTF: __u8 addr[0][6]; /* 4 0 */ So --flat_arrays will show it as: __u8 addr[0]; /* 4 0 */ --show_private_classes --fixup_silly_bitfields To cope with things like 'char foo:8' that since CTF has only the number of bits, can't be expressed as we don't know if it is a bitfield or just a char without the ':8' suffix. --first_obj_only Look only at the first object file in a file with multiple object files, like vmlinux. This is because the CTF support is not complete yet, needing the merging of types in multiple object files to be done. --classes_as_structs CTF has only a type for structs, not for classes like DWARF (DW_TAG_class_type is not present in CTF), so print them all as 'struct'. Running with the above limitations produce just a few mismatches, related to packed structs and enumerations and bitfields.