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* [llvm-readobj] - Always print "Predecessors" for version definition sections.Georgii Rymar2019-11-271-0/+4
| | | | | | | | | | | | | This is a follow-up discussed in D70495 thread. The current logic is unusual for llvm-readobj. It doesn't print predecessors list when it is empty. This is not good for machine parsers. D70495 had to add this condition during refactoring to reduce amount of changes, in tests, because the original code also had a similar logic. Now seems it is time to get rid of it. This patch does it. Differential revision: https://reviews.llvm.org/D70717
* [llvm-readobj/llvm-readelf] - Improve dumping of versioning sections.Georgii Rymar2019-11-201-4/+9
| | | | | | | | | | | | | Our elf-versioninfo.test is not perfect. It does not properly test how flags are dumped and also we have a bug: they are dumped as enums in LLVM style now, i.e not dumped properly. GNU style uses a `versionFlagToString` method to build a string from flags which seems is consistent with GNU readelf. In this patch I fixed the issues mentioned. Differential revision: https://reviews.llvm.org/D70399
* [LLD][ELF] - Update test cases after llvm-readobj output format change.George Rimar2019-10-171-8/+8
| | | | | | | | | | | The change was: SHT_GNU_verdef { -> VersionDefinitions [ SHT_GNU_verneed { -> VersionRequirements [ Version symbols [ -> VersionSymbols [ EH_FRAME Header [ -> EHFrameHeader { llvm-svn: 375096
* [LLD][ELF] - Update test cases after llvm-readobj change.George Rimar2019-10-111-48/+36
| | | | | | https://reviews.llvm.org/D68704 changed the output format. llvm-svn: 374542
* [test] Change llvm-readobj -long-option to --long-option or well-known short ↵Fangrui Song2019-05-011-2/+2
| | | | | | | | | | | | options. NFC Also change some options that have different semantics (cause confusion) in llvm-readelf mode: -s => -S -t => --symbols -sd => --section-data llvm-svn: 359651
* [ELF] Split RW PT_LOAD on the PT_GNU_RELRO boundaryFangrui Song2019-03-151-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Summary: Based on Peter Collingbourne's suggestion in D56828. Before D56828: PT_LOAD(.data PT_GNU_RELRO(.data.rel.ro .bss.rel.ro) .bss) Old: PT_LOAD(PT_GNU_RELRO(.data.rel.ro .bss.rel.ro) .data .bss) New: PT_LOAD(PT_GNU_RELRO(.data.rel.ro .bss.rel.ro)) PT_LOAD(.data. .bss) The new layout reflects the runtime memory mappings. By having two PT_LOAD segments, we can utilize the NOBITS part of the first PT_LOAD and save bytes for .bss.rel.ro. .bss.rel.ro is currently small and only used by copy relocations of symbols in read-only segments, but it can be used for other purposes in the future, e.g. if a relro section's statically relocated data is all zeros, we can move it to .bss.rel.ro. Reviewers: espindola, ruiu, pcc Reviewed By: ruiu Subscribers: nemanjai, jvesely, nhaehnle, javed.absar, kbarton, emaste, arichardson, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D58892 llvm-svn: 356226
* [ELF] Remove checking for spurious '@' at the end of dynamic sym namesJames Henderson2019-01-081-2/+2
| | | | | | | | | | | | llvm-readobj currently has a bug (see PR40097) where it prints '@' at the end of unversioned dynamic symbols. This bug will be fixed in a separate later commit, but these tests need fixing first. Reviewed by: ruiu, Higuoxing Differential Revision: https://reviews.llvm.org/D56388 llvm-svn: 350614
* [ELF] Make non-writable non-executable PROGBITS sections closer to .textFangrui Song2018-06-261-4/+4
| | | | | | | | | | | | This generalizes the old heuristic placing SHT_DYNSYM SHT_DYNSTR first in the readonly SHF_ALLOC segment. Reviewers: espindola Subscribers: emaste, arichardson, llvm-commits Differential Revision: https://reviews.llvm.org/D48406 llvm-svn: 335674
* [lld] Mitigate relocation overflow [part 1 of 2].Han Shen2018-05-151-4/+4
| | | | | | | | | | | This CL places .dynsym and .dynstr at the beginning of SHF_ALLOC sections. We do this to mitigate the possibility that huge .dynsym and .dynstr sections placed between ro-data and text sections cause relocation overflow. Differential Revision: https://reviews.llvm.org/D45788 llvm-svn: 332374
* [ELF] - Revert of: r332038, r332054, r332060, r332061, r332062, r332063George Rimar2018-05-111-4/+4
| | | | | | | | | | | This reverts "Mitigate relocation overflow [part 1 of 2]." and the following commits which were trying to fix the bots. At the moment of r332082, bots are still failing and we need to find the reason of test case breakages first of all. http://lab.llvm.org:8011/builders/llvm-clang-lld-x86_64-scei-ps4-windows10pro-fast/builds/17042/steps/test/logs/stdio http://lab.llvm.org:8011/builders/llvm-clang-lld-x86_64-scei-ps4-ubuntu-fast/builds/29845/steps/test/logs/stdio llvm-svn: 332085
* Mitigate relocation overflow [part 1 of 2].Han Shen2018-05-101-4/+4
| | | | | | | | | | | | This CL is to mitigate R_X86_64_PC32 relocation overflow problems for huge binaries that has near 4G allocated sections. By examining those binaries, there're 2 issues contributes to the problem: 1). huge ".dynsym" and ".dynstr" stands in the way between .rodata and .text 2). _init_array_start/end are placed at 0 if no ".init_array" presents, this causes .text relocation against them become more prone to overflow. This CL addresses 1st problem (the 2nd will be addressed in another CL.) by assigning a smaller sortrank to .dynsym and .dynstr thus they no longer stand in between. llvm-svn: 332038
* [ELF] - Do --hash-style=both by default.George Rimar2017-10-061-3/+3
| | | | | | | | | | | | | | Its PR34712, GNU linkers recently changed default values to "both" of "sysv". Patch do the same for all targets except MIPS, where .gnu.hash section is not yet supported. Code suggested by Rui Ueyama. Differential revision: https://reviews.llvm.org/D38407 llvm-svn: 315051
* lld: Default image base address to 0x200000 on x86-64Ed Maste2016-11-231-1/+1
| | | | | | | | | Align to the large page size (known as a superpage or huge page). FreeBSD automatically promotes large, superpage-aligned allocations. Differential Revision: https://reviews.llvm.org/D27042 llvm-svn: 287782
* Better formatting.Rui Ueyama2016-11-231-14/+8
| | | | | | If a line is too long, its error message becomes hard to read. llvm-svn: 287739
* Linker script: support VERSION command.Rui Ueyama2016-08-311-0/+8
| | | | | | | | | | | | | | | | | | | | | | | | | Summary: VERSION commands define symbol versions. The grammar of the commnad is as follows VERSION { version-script-commands } where version-script-commands is [ name ] { version-definitions }. Note that we already support version-script-commands because it is being used for version script command. This patch is based on George's patch https://reviews.llvm.org/D23609 Reviewers: grimar Subscribers: llvm-commits Differential Revision: https://reviews.llvm.org/D24089 llvm-svn: 280284
* Update testcases after r273417, which changed llvm-readobj output slightly.George Rimar2016-06-221-44/+30
| | | | llvm-svn: 273418
* [ELF] - Recommit r273143("[ELF] - Basic versioned symbols support implemented.")George Rimar2016-06-201-0/+131
| | | | | | | | | | | | | | | | | | With fix: -soname flag was not set in testcase. Hash calculated for base def was different on local and bot machines because filename fos used for calculating. Initial commit message: Patch implements basic support of versioned symbols. There is no wildcards patterns matching except local: *; There is no support for hierarchies. There is no support for symbols overrides (@ vs @@ not handled). This patch allows programs that using simple scripts to link and run. Differential revision: http://reviews.llvm.org/D21018 llvm-svn: 273152
* Revert r273143 "[ELF] - Basic versioned symbols support implemented."George Rimar2016-06-201-131/+0
| | | | | | | It broke buildbot: http://lab.llvm.org:8011/builders/llvm-clang-lld-x86_64-scei-ps4-ubuntu-fast llvm-svn: 273146
* [ELF] - Basic versioned symbols support implemented.George Rimar2016-06-201-0/+131
Patch implements basic support of versioned symbols. There is no wildcards patterns matching except local: *; There is no support for hierarchies. There is no support for symbols overrides (@ vs @@ not handled). This patch allows programs that using simple scripts to link and run. Differential revision: http://reviews.llvm.org/D21018 llvm-svn: 273143
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