Commit Graph

13 Commits

Author SHA1 Message Date
George Rimar cc8f8194ba [LLD][ELF] - Add a test for ScriptParser::readPhdrType().
This adds a test for https://github.com/llvm-mirror/lld/blob/master/ELF/ScriptParser.cpp#L1289.

llvm-svn: 339342
2018-08-09 13:19:10 +00:00
George Rimar b89367ac46 [LLD][ELF] - Add a test for ScriptParser::readPhdrs(). NFCI.
This covers the following line with a test:
https://github.com/llvm-mirror/lld/blob/master/ELF/ScriptParser.cpp#L415

llvm-svn: 339327
2018-08-09 11:13:30 +00:00
Rui Ueyama 1ce416c635 Remove trailing whitespace.
llvm-svn: 320520
2017-12-12 20:00:30 +00:00
Rafael Espindola 337139830e Change which input sections we concatenate
After Mark's patch I was wondering what was the rationale for the ELF
spec requiring us to merge only sections with matching flags and
types. I tried emailing
https://groups.google.com/forum/#!forum/generic-abi, but looks like my
emails are not being posted (the list is probably moderated). I
emailed Cary Coutant instead.

Cary pointed out that the section was a late addition and didn't got
the scrutiny it deserved. Given that and the problems found by
implementing the letter of the standard, I propose changing lld to
merge all sections with the same name and issue errors if the types or
some critical flags are different.

This should allow an unmodified firefox linked with lld to run.

This also merges some code with the linkerscript path.

llvm-svn: 291107
2017-01-05 14:20:35 +00:00
Eugene Leviant 2a942c4b45 [ELF] Print file:line for unknown PHDR error
Differential revision: https://reviews.llvm.org/D27335

llvm-svn: 288678
2016-12-05 16:38:32 +00:00
George Rimar 3fb5a6dc9e [ELF] - Add support of proccessing of the rest allocatable synthetic sections from linkerscript.
This change continues what was started by D27040
Now all allocatable synthetics should be available from script side.

Differential revision: https://reviews.llvm.org/D27131

llvm-svn: 288150
2016-11-29 16:05:27 +00:00
George Rimar 11992c86d9 [ELF] - Add support for access to most of synthetic sections from linkerscript.
This is important for cases like:

  .sdata        : {
    *(.got.plt .got)
...
  }

That was not supported before as there was no way to get access to 
synthetic sections from script.

More details on review page.

Differential revision: https://reviews.llvm.org/D27040

llvm-svn: 287913
2016-11-25 08:05:41 +00:00
Eugene Leviant db35fdf70f Don't include PHDRs if linker script doesn't want them
This script below shouldn't include file and program headers
to PT_LOAD segment, because it doesn't have PHDRS and FILEHDR
attributes:

PHDRS { all PT_LOAD; }
SECTIONS { /* list of sections here */ }

Differential revision: https://reviews.llvm.org/D25774

llvm-svn: 284709
2016-10-20 09:39:09 +00:00
Eugene Leviant ce30b1c78e [ELF] Choose default segment when it is not specified
Linker scripts may specify PHDRS, but not specify section to
segment assignments, i.e:

PHDRS { seg PT_LOAD; }
SECTIONS { 
  .sec1 {} : seg
  .sec2 {} 
}

In such case linker should still choose some segment for .sec2 section.
This patch will add .sec2 to previously opened segments (seg) or to the 
very first PT_LOAD segment, if no section-to-segment assignments has been
made

Differential revision: https://reviews.llvm.org/D24795

llvm-svn: 284600
2016-10-19 15:04:49 +00:00
George Rimar 95dd718c98 [ELF] - Linkerscript: accept integer values for PHDRS types.
Both gold and ld accepts integers instead of named constants
for PHDRS.
Patch adds support for that.

Differential revision: https://reviews.llvm.org/D25549

llvm-svn: 284470
2016-10-18 10:49:50 +00:00
Eugene Leviant 56b21c869e Linker script: implement AT [ (address) ] for PHDR
Differential revision: https://reviews.llvm.org/D24340

llvm-svn: 281024
2016-09-09 09:46:16 +00:00
George Rimar a14b13d867 [ELF] - Linkerscript: create multiple output sections for inputs with different attributes.
Previously we combined sections by name if linkerscript was used.
For that we had to disable SHF_MERGE handling temporarily, but then
found that implementing it properly will require additional complexity layers like
subsections or something.
At the same time looks we can live with multiple output sections approach for now.
That patch do this change.

Differential revision: https://reviews.llvm.org/D24127

llvm-svn: 280801
2016-09-07 10:46:07 +00:00
Rui Ueyama 66ba9f08b9 Remove useless file prefix.
Differential Revision: https://reviews.llvm.org/D24207

llvm-svn: 280540
2016-09-02 20:40:53 +00:00