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Author SHA1 Message Date
Georgii Rymar 3b35603a56 [llvm-readobj] - Always print "Predecessors" for version definition sections. 
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
 2019-11-27 12:29:55 +03:00
Georgii Rymar 1cc78fdb6f [llvm-readobj/llvm-readelf] - Improve dumping of versioning sections. 
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
 2019-11-20 11:55:55 +03:00
George Rimar 938db706fe [LLD][ELF] - Update test cases after llvm-readobj output format change. 
The change was:

SHT_GNU_verdef { -> VersionDefinitions [
SHT_GNU_verneed { -> VersionRequirements [
Version symbols [ -> VersionSymbols [
EH_FRAME Header [ -> EHFrameHeader {

llvm-svn: 375096
 2019-10-17 10:23:59 +00:00
Fangrui Song b159906a9a [test] Change llvm-readobj -long-option to --long-option or well-known short 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
 2019-05-01 05:49:01 +00:00
Rui Ueyama d14743e17f Better formatting. 
If a line is too long, its error message becomes hard to read.

llvm-svn: 287739
 2016-11-23 05:14:01 +00:00
George Rimar 33b9de4b32 [ELF] - Depricate version references. 
This is PR28358

According to
https://www.akkadia.org/drepper/dsohowto.pdf

"The fourth point, the VERS 1.0 version being referred to in the VERS 2.0 definition, is not really important in symbol versioning. It marks the predecessor relationship of the two versions and it is done to maintain the similar- ities with Solaris’ internal versioning. It does not cause any problem it might in fact be useful to a human reader so predecessors should always be mentioned."

Patch partially reverts 273423 "[ELF] - Implemented version script hierarchies.",
version references are just ignored now.

Differential revision: http://reviews.llvm.org/D21888

llvm-svn: 274345
 2016-07-01 11:45:10 +00:00
George Rimar 6a7cfd039e [ELF] - Fix incorrect logic in VersionScriptParser::parseVersion() 
Previously the next sample script would generate 2 entries in 
Config->SymbolVersions with the same version name.

VERSION {
 global: c;
};
That happened because parseVersionSymbols() was called twice.
At first for "global:" and since there is no local tag, it was called again.
Patch fixes the issue, testcase was updated to demonstrate.

Differential revision: http://reviews.llvm.org/D21640

llvm-svn: 273663
 2016-06-24 11:23:55 +00:00
George Rimar 0ab48b7334 [ELF] - Implemented version script hierarchies. 
Patch implements hierarchies for version scripts. 
This allows to handle script files with dependencies, like next one has:

LIBSAMPLE_1.0{
  global:
  a;
};

LIBSAMPLE_2.0
{
  global:
  b;
}LIBSAMPLE_1.0;

Differential revision: http://reviews.llvm.org/D21556

llvm-svn: 273423
 2016-06-22 14:40:45 +00:00