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* readelf: display dynamic symtab without section headersupstream/users/dichen/readelf-28873Di Chen2023-02-101-6/+283
| | | | | | | | | | | | | | | | | | | | | | This commit adds a new option "-D/--use-dynamic" to support printing the dynamic symbol table from the PT_DYNAMIC segment. By using the PT_DYNAMIC segment, eu-readelf can go through the contents of dynamic section entries and the values of each tag. From that, we can get the address and size of the dynamic symbol table, the address of the string table, etc. By using the new option "-D/--use-dynamic", eu-readelf can list the symbols without section headers. Example: $ ./src/readelf -Ds a.out 0: 0000000000000000 0 NOTYPE LOCAL DEFAULT UNDEF 1: 0000000000000000 0 FUNC GLOBAL DEFAULT UNDEF __libc_start_main@GLIBC_2.34 (2) 2: 0000000000000000 0 NOTYPE WEAK DEFAULT UNDEF __gmon_start__ https://sourceware.org/bugzilla/show_bug.cgi?id=28873 Signed-off-by: Di Chen <[email protected]>
* support ZSTD compression algorithmMartin Liska2022-12-232-67/+99
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | config/ChangeLog: * libelf.pc.in: Add LIBLZSTD to Requires.private. ChangeLog: * configure.ac: Detect ZSTD streaming API. libelf/ChangeLog: * Makefile.am: Use zstd_LIBS. * elf_compress.c: (__libelf_compress): Split into ... (__libelf_compress_zlib): ... this. (do_zstd_cleanup): New. (zstd_cleanup): New. (__libelf_compress_zstd): New. (__libelf_decompress): Switch in between zlib and zstd. (__libelf_decompress_zlib): Renamed from __libelf_decompress. (__libelf_decompress_zstd): New. (__libelf_decompress_elf): Dispatch in between compression algorithms. (elf_compress): Likewise. * elf_compress_gnu.c (elf_compress_gnu): Call with ELFCOMPRESS_ZLIB. * libelfP.h (__libelf_compress): Add new argument. (__libelf_decompress): Add chtype argument. src/ChangeLog: * elfcompress.c (enum ch_type): Add ZSTD. (parse_opt): Parse "zstd". (get_section_chtype): New. (process_file): Support zstd compression. (main): Add zstd to help. * readelf.c (elf_ch_type_name): Rewrite with switch. tests/ChangeLog: * Makefile.am: Add ELFUTILS_ZSTD if zstd is enabled. * run-compress-test.sh: Test zstd compression algorithm for debug sections.
* Add support for Synopsys ARCv2 processorsShahab Vahedi2022-12-222-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There is no regression in tests for an x86_64 build, while the new hello_arc_hs4.ko is added as well. This is the only meaningful test that I could add at the moment, given the features supported by this port. $ cat tests/test-suite.log ========================================== elfutils 0.188: tests/test-suite.log ========================================== # TOTAL: 236 # PASS: 235 # SKIP: 1 # XFAIL: 0 # FAIL: 0 # XPASS: 0 # ERROR: 0 .. contents:: :depth: 2 SKIP: run-lfs-symbols.sh ======================== LFS testing is irrelevant on this system SKIP run-lfs-symbols.sh (exit status: 77) $ cat tests/run-strip-reloc.sh.log runtest hello_i386.ko runtest hello_x86_64.ko runtest hello_ppc64.ko runtest hello_s390.ko runtest hello_aarch64.ko runtest hello_m68k.ko runtest hello_riscv64.ko runtest hello_csky.ko runtest hello_arc_hs4.ko <-- [ new ARC HS4 test ] runtest /home/shahab/pahole_pkg/elfutils-git/bld_arc/src/strip runtest /home/shahab/pahole_pkg/elfutils-git/bld_arc/src/strip.o runtest strip-uncompressed.o runtest strip-compressed.o runtest testfile-debug-rel-ppc64.o runtest testfile-debug-rel-ppc64-z.o runtest testfile-debug-rel-ppc64-g.o PASS run-strip-reloc.sh (exit status: 0) Signed-off-by: Shahab Vahedi <[email protected]>
* Add support for LoongArchHengqi Chen2022-12-192-1/+5
| | | | | | This implements initial support for the LoongArch architecture. Signed-off-by: Hengqi Chen <[email protected]>
* Refactor elf_compareMartin Liska2022-11-291-63/+110
| | | | | | | | | | | | | | | src/ChangeLog: * elfcompress.c (T_UNSET): Remove and use ch_type. (T_DECOMPRESS): Likewise. (T_COMPRESS_ZLIB): Likewise. (T_COMPRESS_GNU): Likewise. (enum ch_type): New. (parse_opt): Parse to new ch_type. (compress_section): Change gnu and compress arguments to schtype (source compression) and dchtype (destination compression). (process_file): Use new enum type and adjusted compress_section.
* Missing newline for: elfcompress -t zlib-gnu a.out -forceMartin Liska2022-11-281-1/+1
| | | | | | | | | | | | | | | | | | | | Fixes: ./src/elfcompress -t zlib-gnu a.out -force [28] .zdebug_aranges unchanged, already GNU compressed[29] .zdebug_info unchanged, already GNU compressed[30] .zdebug_abbrev unchanged, already GNU compressed[31] .zdebug_line unchanged, already GNU compressed[32] .zdebug_str unchanged, already GNU compressed[33] .zdebug_line_str unchanged, already GNU compressed[34] .zdebug_rnglists unchanged, already GNU compressed to: ./src/elfcompress -t zlib-gnu a.out -force [28] .zdebug_aranges unchanged, already GNU compressed [29] .zdebug_info unchanged, already GNU compressed [30] .zdebug_abbrev unchanged, already GNU compressed [31] .zdebug_line unchanged, already GNU compressed [32] .zdebug_str unchanged, already GNU compressed [33] .zdebug_line_str unchanged, already GNU compressed [34] .zdebug_rnglists unchanged, already GNU compressed src/ChangeLog: * elfcompress.c (process_file): Add missing newline.
* readelf: print warning for -sWMartin Liska2022-11-281-5/+18
| | | | | | | | | | | | | | | | | | | | | The option -s accepts in elfutils (compared to binutils) a positional argument that is name of a symbol table section which should be printed. Thus, print a reasonable warning if -sW is used: ./src/readelf -sW a.out WARNING: cannot find section: 'W' PR29719 src/ChangeLog: * readelf.c (print_symtab): Change signature and return true if something is printed. (process_elf_file): Use it and print warning. tests/ChangeLog: * run-readelf-s.sh: Test -sW.
* readelf: Check gelf_getdyn doesn't return NULLMark Wielaard2022-11-032-1/+6
| | | | Signed-off-by: Mark Wielaard <[email protected]>
* readelf: Check phdr != NULL or shdr != NULL in handle_dynamic.Mark Wielaard2022-11-032-5/+10
| | | | | | | | | The compiler doesn't know that when use_dynamic_segment is true, then phdr should/will be non-NULL and otherwise shdr is non-NULL. Add explicit checks to help the compiler out and in case an error is made calling the handle_dynamic function. Signed-off-by: Mark Wielaard <[email protected]>
* readelf: add binutils-style --syms optionArsen Arsenović2022-10-302-0/+5
| | | | | | This helps people with a lot of built up muscle memory :) Signed-off-by: Arsen Arsenović <[email protected]>
* readelf: Handle DW_LLE_GNU_view_pairMark Wielaard2022-10-272-0/+18
| | | | | | | | DW_LLE_GNU_view_pair is used by gcc -gvariable-location-views=incompat5. As described in http://www.fsfla.org/~lxoliva/papers/sfn/dwarf6-sfn-lvu.txt and proposed for DWARF6 https://dwarfstd.org/ShowIssue.php?issue=170427.1 Signed-off-by: Mark Wielaard <[email protected]>
* Strip __ prefix from __BYTE_ORDER __LITTLE_ENDIAN and __BIG_ENDIANYonggang Luo2022-10-172-1/+5
| | | | | | | | __BYTE_ORDER, __LITTLE_ENDIAN and __BIG_ENDIAN are defined by the gcc/clang preprocessor. BYTE_ORDER, LITTLE_ENDIAN and BIG_ENDIAN are defined in <endian.h>. Signed-off-by: Yonggang Luo <[email protected]>
* Move the #include <libintl.h> into eu-config.hYonggang Luo2022-10-1616-16/+0
| | | | | | | | | | So we do not need include in each file. And indeed the macro #define _(Str) dgettext ("elfutils", Str) access libintl function dgettext, so it's make more sense #include <libintl.h> in file eu-config.h Signed-off-by: Yonggang Luo <[email protected]>
* ar: Correct -N COUNT off-by-oneMark Wielaard2022-09-142-2/+8
| | | | | | | | | | | | | When using instance [COUNT], the instance check is wrong. instance-- == 0 should be --instance == 0. Add a testcase run-ar-N.sh that uses -N COUNT with extract and delete operations checking the right instance was extracted and deleted. https://sourceware.org/bugzilla/show_bug.cgi?id=28725 Reported-by: panxiaohe <[email protected]> Signed-off-by: Mark Wielaard <[email protected]>
* readelf: Handle SHT_RISCV_ATTRIBUTES like SHT_GNU_ATTRIBUTESAndreas Schwab2022-08-132-1/+7
| | | | Signed-off-by: Andreas Schwab <[email protected]>
* elflint: Allow zero p_memsz for PT_RISCV_ATTRIBUTESAndreas Schwab2022-08-092-1/+9
| | | | | | The RISCV_ATTRIBUTES segment is not meant to be loaded. Signed-off-by: Andreas Schwab <[email protected]>
* readelf: memrchr searches backwards but takes the start buf as argumentMark Wielaard2022-08-012-4/+9
| | | | | | The bug (caught by valgrind) was giving memrchr to end of the buffer. Also as cleanup, Use d_val not d_ptr for calculating offset.
* readelf: Support --dynamic with --use-dynamicDi Chen2022-08-012-26/+199
| | | | | | | | | | | | Currently, eu-readelf is using section headers to dump the dynamic segment information (print_dynamic -> handle_dynamic). This patch adds new options to eu-readelf (-D, --use-dynamic) for (-d, --dynamic). https://sourceware.org/bugzilla/show_bug.cgi?id=28873 Signed-off-by: Di Chen <[email protected]>
* strip: Add more NULL checkMark Wielaard2022-05-142-2/+15
| | | | | | | | When gelf_getshdr, gelf_getrela, gelf_getrel or gelf_getsymshndx return NULL it is an internal error which we want to report instead of crashing. Signed-off-by: Mark Wielaard <[email protected]>
* elfcompress: Add sanity checks to make sure to not override variableMark Wielaard2022-05-142-0/+29
| | | | | | | The process_file code is a little tricky. Add sanity checks to make sure shstrtab_name, shstrtab_newname and symstrents are only set once. Signed-off-by: Mark Wielaard <[email protected]>
* elfclassify: Fix --no-stdin flagMark Wielaard2022-04-242-1/+5
| | | | | | | | | The no-stdin option was using the wrong flag, classify_flag_stdin, instead of classify_flag_no_stdin. https://sourceware.org/bugzilla/show_bug.cgi?id=28724 Signed-off-by: Mark Wielaard <[email protected]>
* readelf: Define dyn_mem outside the while loop.Mark Wielaard2022-04-192-1/+5
| | | | | | | The GCC address sanitizer might complain otherwise: stack-use-after-scope src/readelf.c:1787 in get_dyn_ents Signed-off-by: Mark Wielaard <[email protected]>
* readelf: Don't consider padding DT_NULL as dynamic section entryDi Chen2022-04-192-6/+31
| | | | | | | | | | | when using `$ eu-readelf -d {FILE}` to get the number of dynamic section entris, it wrongly counts the padding DT_NULLs as dynamic section entries. However, DT_NULL Marks end of dynamic section. They should not be considered as dynamic section entries. https://sourceware.org/bugzilla/show_bug.cgi?id=28928 Signed-off-by: Di Chen <[email protected]>
* Introduce error_exit as a noreturn variant of error (EXIT_FAILURE, ...)Mark Wielaard2022-03-3012-288/+250
| | | | | | | | | | | | error (EXIT_FAILURE, ...) should be noreturn but on some systems it isn't. This may cause warnings about code that should not be reachable. So have an explicit error_exit wrapper that is noreturn (because it calls exit explicitly). Use error_exit in all tools under the src directory. https://bugzilla.redhat.com/show_bug.cgi?id=2068692 Signed-off-by: Mark Wielaard <[email protected]>
* elflint: Recognize NT_FDO_PACKAGING_METADATAMark Wielaard2022-03-252-0/+11
| | | | Signed-off-by: Mark Wielaard <[email protected]>
* addr2line: Make --absolute the default, add --relative option.Mark Wielaard2022-03-142-3/+18
| | | | | | | | | | Make --absolute (including the compilation directory in file names) the default and add a new option --relative to get the previous default behavior. https://www.sourceware.org/bugzilla/show_bug.cgi?id=28951 Signed-off-by: Mark Wielaard <[email protected]>
* readelf: Workaround stringop-truncation errorMark Wielaard2021-12-092-1/+5
| | | | | | | | | | | | | | | | In function ‘strncpy’, inlined from ‘print_ehdr’ at readelf.c:1175:4: error: ‘__builtin_strncpy’ specified bound 512 equals destination size [-Werror=stringop-truncation] strncpy doesn't terminate the copied string if there is not enough room. We compensate later by explicitly adding a zero terminator at buf[sizeof (buf) - 1]. Normally gcc does see this, but with -fsanitize=address there is too much (checking) code in between. But it is actually better to not let strncpy do too much work, so substract one from the size. Signed-off-by: Mark Wielaard <[email protected]>
* libdw, readelf: Read inlining info in NVIDIA extended line mapJohn M Mellor-Crummey2021-11-102-0/+68
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As of CUDA 11.2, NVIDIA added extensions to the line map section of CUDA binaries to represent inlined functions. These extensions include - two new fields in a line table row to represent inline information: context, and functionname, - two new DWARF extended opcodes: DW_LNE_NVIDIA_inlined_call, DW_LNE_NVIDIA_set_function_name, - an additional word in the line table header that indicates the offset in the .debug_str function where the function names for this line table begin, and A line table row for an inlined function contains a non-zero "context" value. The “context” field indicates the index of the line table row that serves as the call site for an inlined context. The "functionname" field in a line table row is only meaningful if the "context" field of the row is non-zero. A meaningful "functionname" field contains an index into the .debug_str section relative to the base offset established in the line table header; the position in the .debug_str section indicates the name of the inlined function. These extensions resemble the proposed DWARF extensions (http://dwarfstd.org/ShowIssue.php?issue=140906.1) by Cary Coutant, but are not identical. This commit integrates support for handling NVIDIA's extended line maps into elfutil's libdw library, by adding two functions dwarf_linecontext and dwarf_linefunctionname, and the readelf --debug-dump=line command line utility. Signed-off-by: John M Mellor-Crummey <[email protected]> Signed-off-by: Mark Wielaard <[email protected]>
* elflint.c: Don't dereference databits if badMark Wielaard2021-10-062-1/+5
| | | | | | | | | | | | elflint.c: In function 'check_sections': elflint.c:4105:48: error: null pointer dereference [-Werror=null-dereference] 4105 | idx < databits->d_size && ! bad; | ~~~~~~~~^~~~~~~~ Fix this by testing for ! bad first. Reported-by: Jan-Benedict Glaw <[email protected]> Signed-off-by: Mark Wielaard <[email protected]>
* findtextrel: do not use unbound allocaDmitry V. Levin2021-09-093-30/+30
| | | | | | | | This fixes the following compilation warning: findtextrel.c:184:1: warning: stack usage might be unbounded [-Wstack-usage=] Signed-off-by: Dmitry V. Levin <[email protected]>
* Use xasprintf instead of asprintf followed by error(EXIT_FAILURE)Dmitry V. Levin2021-09-094-23/+21
| | | | Signed-off-by: Dmitry V. Levin <[email protected]>
* Remove redundant casts of memory allocating functions returning void *Dmitry V. Levin2021-09-096-23/+29
| | | | | | | Return values of functions returning "void *", e.g. calloc, malloc, realloc, xcalloc, xmalloc, and xrealloc, do not need explicit casts. Signed-off-by: Dmitry V. Levin <[email protected]>
* src: add -Wno-error=stack-usage= to AM_LDFLAGSDmitry V. Levin2021-09-092-1/+5
| | | | | | | | | | While -Wstack-usage= is already excluded from AM_CFLAGS for various tools in src using *_no_Wstack_usage variables, this obviously does not help when LTO is enabled, so add -Wno-error=stack-usage= to AM_LDFLAGS for linking tools in src. References: https://sourceware.org/bugzilla/show_bug.cgi?id=24498 Signed-off-by: Dmitry V. Levin <[email protected]>
* debuginfod, elfclassify: remove unnecessary header inclusionSaleem Abdulrasool2021-08-272-1/+4
| | | | | | | | | `error.h`'s inclusion was centralised into the `system.h` header. As the implementation currently includes `system.h` already, the inclusion of `error.h` is unnecessary. This prepares for a future portability change to allow elfutil to build with alternate libc implementations. Signed-off-by: Saleem Abdulrasool <[email protected]>
* readelf: Pull advance_pc() in file scopeTimm Bäder2021-07-152-7/+26
| | | | | | | | | Make advance_pc() a static function so we can get rid of another nested function. Rename it to run_advance_pc() and use a local advance_pc() macro to pass all the local variables. This is similar to what the equivalent code in libdw/dwarf_getsrclines.c is doing. Signed-off-by: Timm Bäder <[email protected]>
* readelf: Handle line tables without line number statements correctlyMark Wielaard2021-07-041-1/+1
| | | | | | | | | When we see a line table without line number statements we need to continue with the next table. Add a testcase for this situation. https://sourceware.org/bugzilla/show_bug.cgi?id=28032 Signed-off-by: Mark Wielaard <[email protected]>
* readelf: Fix error message when two attribute names differ in in ↵Mark Wielaard2021-07-032-1/+5
| | | | | | | | | compare_listptr. We were printing the second attribute name twice. Print the first and second. Reported-by: Gabriel Valky <[email protected]> Signed-off-by: Mark Wielaard <[email protected]>
* unstrip: Always check gelf_getrel[a] resultsMark Wielaard2021-07-032-0/+6
| | | | Signed-off-by: Mark Wielaard <[email protected]>
* strip: Always check gelf_update results.Mark Wielaard2021-07-032-4/+14
| | | | Signed-off-by: Mark Wielaard <[email protected]>
* elflint: fix undefined 'buffer_left' referenceSergei Trofimovich2021-06-072-1/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Link failure is reproducible on gcc-11.1.0 target: ``` $ autoreconf -i -f $ ./configure --enable-maintainer-mode --disable-debuginfod \ --host=x86_64-pc-linux-gnu \ CFLAGS=-march=znver3 \ CXXFLAGS=-march=znver3 \ LDFLAGS=" " $ make CCLD elflint ld: elflint.o: in function `check_attributes': elflint.c:(.text+0xdcff): undefined reference to `buffer_left' ld: elflint.c:(.text+0xe557): undefined reference to `buffer_left' ``` It happens due to possible external linkage of `buffer_left()`. The change forces local linkage to always use local definition (either inline or out-of-line). Reported-by: Toralf Förster Bug: https://bugs.gentoo.org/794601 Signed-off-by: Sergei Trofimovich <[email protected]> Fixes: e95d1fbb ("elflint: Pull left() in file scope") Signed-off-by: Dmitry V. Levin <[email protected]>
* elfcompress: fix exit status in case of an errorDmitry V. Levin2021-05-122-1/+4
| | | | | | | | Exit status of 255 in case of an error is probably not what elfcompress users expect, change it to 1. Reported-by: Vitaly Chikunov <[email protected]> Fixes: 92acb57eb046 ("elfcompress: New utility.")
* elfcompress: remove redundant assignmentDmitry V. Levin2021-05-122-1/+3
| | | | | | | | | At the point of "Nothing to do" fnew variable has not been assigned after initialization, so it does not have to be reset to NULL. Note that any reset of fnew to NULL has to preceded with free(fnew). Fixes: ed62996defc6 ("elfcompress: Don't rewrite file if no section data needs to be updated.")
* elfcompress: fix exit status regression in case of "Nothing to do"Dmitry V. Levin2021-05-122-0/+5
| | | | | | | | | When elfcompress decides that no section data needs to be updated and therefore the file does not have to be rewritten, it still has to exit with a zero status indicating success. Resolves: https://sourceware.org/bugzilla/show_bug.cgi?id=27856 Fixes: c497478390de ("elfcompress: Replace cleanup() with label")
* Come up with startswith function.Martin Liska2021-05-126-27/+32
| | | | | | | New function in system.h that returns true if a string has a given prefix, false otherwise. Use it in place of strncmp. Signed-off-by: Martin Liška <[email protected]>
* nm: Fix file descriptor leak on dwfl_begin failure.Mark Wielaard2021-04-132-0/+6
| | | | | | | If dwfl_begin fails we won't use the dwfl_fd descriptor we just dupped. Make sure to close on dwfl_begin failure to avoid the leak. Signed-off-by: Mark Wielaard <[email protected]>
* unstrip: Fix small leak in handle_output_dir_module.Mark Wielaard2021-04-132-0/+6
| | | | | | | | eu-unstrip might leak a string for each module found when using the -d option. Make sure to free the output_file name when we are done with the module. Signed-off-by: Mark Wielaard <[email protected]>
* ar: Always close newfd in do_oper_insert.Mark Wielaard2021-04-132-0/+7
| | | | | | | | | newfd is normally created by mkstemp given the original fd exists. Otherwise it will created by open from arfname. In the second case newfd might not get closed. Preventd this by always trying to close it after errout. Signed-off-by: Mark Wielaard <[email protected]>
* readelf: Sanity check verneed and verdef offsets in handle_symtab.Mark Wielaard2021-03-032-1/+14
| | | | | | | | | | We are going through vna_next, vn_next and vd_next in a while loop. Make sure that all offsets are sane. We don't want things to wrap around so we go in cycles. https://sourceware.org/bugzilla/show_bug.cgi?id=27501 Signed-off-by: Mark Wielaard <[email protected]>
* elfcompress: Replace cleanup() with labelTimm Bäder2021-03-022-109/+112
| | | | | | | This unifies the error handling with the rest of the code base and gets rid of a nested function. Signed-off-by: Timm Bäder <[email protected]>
* elfcompress: Pull get_sections() into file scopeTimm Bäder2021-03-012-10/+17
| | | | | | Get rid of a nested function this way. Signed-off-by: Timm Bäder <[email protected]>
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