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* [llvm-objdump] - Print relocation record in a GNU format.George Rimar2019-05-071-3/+3
| | | | | | | | | | | | | | | This fixes the https://bugs.llvm.org/show_bug.cgi?id=41355. Previously with -r we printed relocation section name instead of the target section name. It was like this: "RELOCATION RECORDS FOR [.rel.text]" Now it is: "RELOCATION RECORDS FOR [.text]" Also when relocation target section has more than one relocation section, we did not combine the output. Now we do. Differential revision: https://reviews.llvm.org/D61312 llvm-svn: 360143
* [llvm] Prevent duplicate files in debug line header in dwarf 5: another attemptAli Tamur2019-04-191-6/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Another attempt to land the changes in debug line header to prevent duplicate files in Dwarf 5. I rolled back my previous commit because of a mistake in generating the object file in a test. Meanwhile, I addressed some offline comments and changed the implementation; the largest difference is that MCDwarfLineTableHeader does not keep DwarfVersion but gets it as a parameter. I also merged the patch to fix two lld tests that will strt to fail into this patch. Original Commit: https://reviews.llvm.org/D59515 Original Message: Motivation: In previous dwarf versions, file name indexes started from 1, and the primary source file was not explicit. Dwarf 5 standard (6.2.4) prescribes the primary source file to be explicitly given an entry with an index number 0. The current implementation honors the specification by just duplicating the main source file, once with index number 0, and later maybe with another index number. While this is compliant with the letter of the standard, the duplication causes problems for consumers of this information such as lldb. (Some files are duplicated, where only some of them have a line table although all refer to the same file) With this change, dwarf 5 debug line section files always start from 0, and the zeroth entry is not duplicated whenever possible. This requires different handling of dwarf 4 and dwarf 5 during generation (e.g. when a function returns an index zero for a file name, it signals an error in dwarf 4, but not in dwarf 5) However, I think the minor complication is worth it, because it enables all consumers (lldb, gdb, dwarfdump, objdump, and so on) to treat all files in the file name list homogenously. llvm-svn: 358732
* Revert "[llvm] Reapply "Prevent duplicate files in debug line header in ↵Ali Tamur2019-03-261-10/+7
| | | | | | | | | | | | | dwarf 5."" This reverts commit rL357020. The commit broke the test llvm/test/tools/llvm-objdump/embedded-source.test on some builds including clang-ppc64be-linux-multistage, clang-s390x-linux, clang-with-lto-ubuntu, clang-x64-windows-msvc, llvm-clang-lld-x86_64-scei-ps4-windows10pro-fast (and others). llvm-svn: 357026
* [llvm] Reapply "Prevent duplicate files in debug line header in dwarf 5."Ali Tamur2019-03-261-7/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Reapply rL356941 after regenerating the object file in the failing test llvm/test/tools/llvm-objdump/embedded-source.test from source. Original commit message: [llvm] Prevent duplicate files in debug line header in dwarf 5. Motivation: In previous dwarf versions, file name indexes started from 1, and the primary source file was not explicit. Dwarf 5 standard (6.2.4) prescribes the primary source file to be explicitly given an entry with an index number 0. The current implementation honors the specification by just duplicating the main source file, once with index number 0, and later maybe with another index number. While this is compliant with the letter of the standard, the duplication causes problems for consumers of this information such as lldb. (Some files are duplicated, where only some of them have a line table although all refer to the same file) With this change, dwarf 5 debug line section files always start from 0, and the zeroth entry is not duplicated whenever possible. This requires different handling of dwarf 4 and dwarf 5 during generation (e.g. when a function returns an index zero for a file name, it signals an error in dwarf 4, but not in dwarf 5) However, I think the minor complication is worth it, because it enables all consumers (lldb, gdb, dwarfdump, objdump, and so on) to treat all files in the file name list homogenously. Tags: #llvm, #debug-info Differential Revision: https://reviews.llvm.org/D59515 llvm-svn: 357018
* Revert "[llvm] Prevent duplicate files in debug line header in dwarf 5."Ali Tamur2019-03-251-10/+7
| | | | | | | | This reverts commit 312ab05887d0e2caa29aaf843cefe39379a98d36. My commit broke the build; I will revert and find out what happened. llvm-svn: 356951
* [llvm] Prevent duplicate files in debug line header in dwarf 5.Ali Tamur2019-03-251-7/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Summary: Motivation: In previous dwarf versions, file name indexes started from 1, and the primary source file was not explicit. Dwarf 5 standard (6.2.4) prescribes the primary source file to be explicitly given an entry with an index number 0. The current implementation honors the specification by just duplicating the main source file, once with index number 0, and later maybe with another index number. While this is compliant with the letter of the standard, the duplication causes problems for consumers of this information such as lldb. (Some files are duplicated, where only some of them have a line table although all refer to the same file) With this change, dwarf 5 debug line section files always start from 0, and the zeroth entry is not duplicated whenever possible. This requires different handling of dwarf 4 and dwarf 5 during generation (e.g. when a function returns an index zero for a file name, it signals an error in dwarf 4, but not in dwarf 5) However, I think the minor complication is worth it, because it enables all consumers (lldb, gdb, dwarfdump, objdump, and so on) to treat all files in the file name list homogenously. Reviewers: dblaikie, probinson, aprantl, espindola Reviewed By: probinson Subscribers: emaste, jvesely, nhaehnle, aprantl, javed.absar, arichardson, hiraditya, MaskRay, rupprecht, jdoerfert, llvm-commits Tags: #llvm, #debug-info Differential Revision: https://reviews.llvm.org/D59515 llvm-svn: 356941
* Revert "[DWARF] reposting r342048, which was reverted in r342056 due to ↵Alexander Kornienko2018-09-171-5/+6
| | | | | | | | | buildbot errors. Adjusted 2 test cases for ARM and darwin and fixed a bug with the original change in dsymutil." This reverts commit r342218. Due to a number of failures under TSAN. An isolated test case is being worked on. llvm-svn: 342399
* [DWARF] reposting r342048, which was reverted in r342056 due to buildbot Wolfgang Pieb2018-09-141-6/+5
| | | | | | | | errors. Adjusted 2 test cases for ARM and darwin and fixed a bug with the original change in dsymutil. llvm-svn: 342218
* Reverting r342048, which caused UBSan failures in dsymutil.Wolfgang Pieb2018-09-121-5/+6
| | | | llvm-svn: 342056
* [DWARF] Refactoring range list dumping to fold DWARF v4 functionality into ↵Wolfgang Pieb2018-09-121-6/+5
| | | | | | | | | | | | | v5 handling Eliminating some duplication of rangelist dumping code at the expense of some version-dependent code in dump and extract routines. Reviewer: dblaikie, JDevlieghere, vleschuk Differential revision: https://reviews.llvm.org/D51081 llvm-svn: 342048
* Reapply "[DWARFv5] Emit file 0 to the line table."Paul Robinson2018-03-291-2/+2
| | | | | | | | | | | | | | | | | DWARF v5 specifies that the root file (also given in the DW_AT_name attribute of the compilation unit DIE) should be emitted explicitly to the line table's list of files. This makes the line table more independent of the .debug_info section. We emit the new syntax only for DWARF v5 and later. Fixes the bug found by asan. Also XFAIL the new test for Darwin, which is stuck on DWARF v2, and fix up other tests so they stop failing on Windows. Last but not least, don't break "clang -g" of an assembler file that has .file directives in it. Differential Revision: https://reviews.llvm.org/D44054 llvm-svn: 328805
* Revert "Reapply "[DWARFv5] Emit file 0 to the line table.""Alexander Potapenko2018-03-281-2/+2
| | | | | | | | | | | | | | | This reverts commit r328676. Commit r328676 broke the -no-integrated-as flag necessary to build Linux kernel with Clang: $ cat t.c void foo() {} $ clang -no-integrated-as -c t.c -g /tmp/t-dcdec5.s: Assembler messages: /tmp/t-dcdec5.s:8: Error: file number less than one clang-7.0: error: assembler command failed with exit code 1 (use -v to see invocation) llvm-svn: 328699
* Reapply "[DWARFv5] Emit file 0 to the line table."Paul Robinson2018-03-271-2/+2
| | | | | | | | | | | | | | | | DWARF v5 specifies that the root file (also given in the DW_AT_name attribute of the compilation unit DIE) should be emitted explicitly to the line table's list of files. This makes the line table more independent of the .debug_info section. Fixes the bug found by asan. Also XFAIL the new test for Darwin, which is stuck on DWARF v2, and fix up other tests so they stop failing on Windows. Last but not least, don't break "clang -g" of an assembler file that has .file directives in it. Differential Revision: https://reviews.llvm.org/D44054 llvm-svn: 328676
* Revert "Reapply "[DWARFv5] Emit file 0 to the line table.""Alexander Kornienko2018-03-071-2/+2
| | | | | | | | | | | | | | | | This reverts commit r326839. r326839 breaks assembly file parsing: $ cat q.c void g() {} $ clang -S q.c -g $ clang -g -c q.s q.s:9:2: error: file number already allocated .file 1 "/tmp/test" "q.c" ^ llvm-svn: 326902
* Reapply "[DWARFv5] Emit file 0 to the line table."Paul Robinson2018-03-061-2/+2
| | | | | | | | Fixes the bug found by asan. Also XFAIL the new test for Darwin, which is stuck on DWARF v2, and fix up other tests so they stop failing on Windows. llvm-svn: 326839
* Revert "[DWARFv5] Emit file 0 to the line table."Paul Robinson2018-03-061-2/+2
| | | | | | | | | Caused an asan failure. This reverts commit d54883f081186cdcce74e6f98cfc0438579ec019. aka r326758 llvm-svn: 326762
* [DWARFv5] Emit file 0 to the line table.Paul Robinson2018-03-061-2/+2
| | | | | | | | | | | DWARF v5 specifies that the root file (also given in the DW_AT_name attribute of the compilation unit DIE) should be emitted explicitly to the line table's list of files. This makes the line table more independent of the .debug_info section. Differential Revision: https://reviews.llvm.org/D44054 llvm-svn: 326758
* [DebugInfo] Support DWARF v5 source code embedding extensionScott Linder2018-02-231-1/+2
| | | | | | | | | | | | | | | | | | | In DWARF v5 the Line Number Program Header is extensible, allowing values with new content types. In this extension a content type is added, DW_LNCT_LLVM_source, which contains the embedded source code of the file. Add new optional attribute for !DIFile IR metadata called source which contains source text. Use this to output the source to the DWARF line table of code objects. Analogously extend METADATA_FILE in Bitcode and .file directive in ASM to support optional source. Teach llvm-dwarfdump and llvm-objdump about the new values. Update the output format of llvm-dwarfdump to make room for the new attribute on file_names entries, and support embedded sources for the -source option in llvm-objdump. Differential Revision: https://reviews.llvm.org/D42765 llvm-svn: 325970
* [DWARFv5] Fix dumper to show the file table starts at index 0.Paul Robinson2018-02-081-4/+4
| | | | | | | | Emitting the correct (root of compilation) file at index 0 will be posted for review later; I wanted to get this minor change out of the way first. llvm-svn: 324669
* [DWARF] Regularize dumping strings from line tables.Paul Robinson2018-02-051-2/+2
| | | | | | | | | | | | | | | | | The major visible difference here is that in line-table dumps, directory and file names are wrapped in double-quotes; previously, directory names got single quotes and file names were not quoted at all. The improvement in this patch is that when a DWARF v5 line table header has indirect strings, in a verbose dump these will all have their section[offset] printed as well as the name itself. This matches the format used for dumping strings in the .debug_info section. Differential Revision: https://reviews.llvm.org/D42802 llvm-svn: 324270
* [DWARFv5] Number the line-table's directory array correctly.Paul Robinson2018-01-181-1/+1
| | | | | | | | | | | | | | The compilation directory has always been #0, but as of DWARF v5 it is explicitly listed in the line-table section instead of implicitly being a reference to the compile_unit DIE's DW_AT_comp_dir attribute. This means the dumper should number the dumped array starting with 0 or 1 depending on the DWARF version of the line table. References in the generated DWARF are correct, it's just the dumper that was wrong. Also some assembler-coded tests were similarly confused about directory numbers. llvm-svn: 322884
* [DebugInfo] Unify dumping of address rangesJonas Devlieghere2018-01-161-2/+2
| | | | | | | | | | | | | | | Summary: This patch unifies the printing of address ranges as [0x0, 0x1). rdar://34822059 Reviewers: aprantl, dblaikie Subscribers: mehdi_amini, llvm-commits Differential Revision: https://reviews.llvm.org/D42056 llvm-svn: 322543
* [DWARFv5] Emit v5 line table header.Paul Robinson2017-12-051-3/+7
| | | | | | Differential Revision: https://reviews.llvm.org/D40741 llvm-svn: 319827
* [dwarfdump] Add verbose output for .debug-line sectionJonas Devlieghere2017-09-211-5/+8
| | | | | | | | | | | | This patch adds dumping of line table instructions as well as the final state at each specified pc value in verbose mode. This is essentially the same as the default in Darwin's dwarfdump. Dumping the actual line table opcodes can be particularly useful for something like debugging a bad `.debug_line` section. Differential revision: https://reviews.llvm.org/D37971 llvm-svn: 313910
* llvm-dwarfdump: Make -brief the default and add a -verbose option instead.Adrian Prantl2017-09-111-3/+3
| | | | | | Differential Revision: https://reviews.llvm.org/D37717 llvm-svn: 312972
* [DWARFv5] llvm-mc support for new unit header.Paul Robinson2017-02-281-15/+22
| | | | | | | | | This is for running the assembler with -g (to emit DWARF describing the assembler source). Differential Revision: http://reviews.llvm.org/D30475 llvm-svn: 296541
* Form reform for MCDwarf.Paul Robinson2015-12-231-9/+14
| | | | | | | | | MCDwarf emits a canned abbreviation table, but was not emitting proper forms for DWARF version 4, which is the default after r249655. Differential Revision: http://reviews.llvm.org/D15732 llvm-svn: 256313
* [dwarfdump] Dump DW_AT_ranges values inline in the debug_info dump.Frederic Riss2014-10-231-1/+1
| | | | | | | | | | | The output looks like that: DW_AT_ranges [FORM_data4] (0x00000000 [0x00000001000024a0 - 0x00000001000024c2) [0x0000000100002505 - 0x000000010000268b)) Differential Revision: http://reviews.llvm.org/D5712 llvm-svn: 220466
* Downgrade DWARF2 section limit error to a warningOliver Stannard2014-09-221-2/+2
| | | | | | | | | We currently emit an error when trying to assemble a file with more than one section using DWARF2 debug info. This should be a warning instead, as the resulting file will still be usable, but with a degraded debug illusion. llvm-svn: 218241
* Since we're using DW_AT_string rather than DW_AT_strp for debug_infoEric Christopher2014-06-191-2/+2
| | | | | | | | for assembly files we can't depend on the offset within the section after a string since it could be different between producers etc. Relax these tests accordingly. llvm-svn: 211308
* Tests for r211273Oliver Stannard2014-06-191-0/+79
llvm-svn: 211279
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