83b0dc6392
ELF: Drop the Chunk base class.
...
With OutputSection being a virtual interface, each concrete OutputSection
handles only one type of chunk and we don't need a base Chunk class.
So for we have a class that handles input sections and one that handles
the string table, but this extends naturally for other outputs (symbol table,
merging of SHF_MERGE sections, etc.).
llvm-svn: 244972
2015-08-13 22:21:37 +00:00
ebd2108215
Make OutputSection virtual and use that for creating the string table.
...
We were creating the string table in a completely ad hoc way. Now the
string table is an output section and gets its output offset set just like
any other section.
This opens the way for other linker created sections like the symbol table.
llvm-svn: 244969
2015-08-13 22:14:37 +00:00
2db634d8f1
Correctly align output sections.
...
They don't need to be aligned to page boundaries. Only segments need that.
llvm-svn: 244942
2015-08-13 20:24:18 +00:00
0160a281c2
Record the alignment of the output sections.
...
llvm-svn: 244941
2015-08-13 20:13:39 +00:00
5d83ccd55b
Make getSectionName non virtual. NFC.
...
llvm-svn: 244939
2015-08-13 19:18:30 +00:00
ea133eaa39
Delete dead code.
...
llvm-svn: 244938
2015-08-13 19:00:23 +00:00
a175eb6ca6
Template OutputSection only over Is64Bit.
...
This is a bit more c++ code, but:
* It is less machine code: lld's text is 44688 bytes smaller.
* It should be a bit more efficient in the non native endian case.
* It should be a bit more efficient on architectures with slow unaligned access.
llvm-svn: 244934
2015-08-13 18:37:23 +00:00
184d94e009
Define trivial methods inline. NFC.
...
llvm-svn: 244930
2015-08-13 18:25:47 +00:00
64e888ba5f
Set the file offset of zero sized sections.
...
There is no reason not to do it and this matches what gold and bfd ld do.
llvm-svn: 244929
2015-08-13 18:23:43 +00:00
29e8d343e4
Rename addSectionChunk to addChunk now that it can handle any Chunk.
...
llvm-svn: 244919
2015-08-13 17:35:13 +00:00
375a508234
Pass the type and flags to the OutputSection constructor. NFC.
...
This will allow further cleanups.
llvm-svn: 244918
2015-08-13 17:32:30 +00:00
a7471795ae
Take name, type and flags in consideration when concatenating sections.
...
This is mandated by the ELF spec.
llvm-svn: 244911
2015-08-13 17:04:50 +00:00
674b5d570f
Store the offset in the output section, no in the file.
...
That is the value that is stable as the we layout the output sections.
llvm-svn: 244904
2015-08-13 15:54:36 +00:00
ef1ac01c2e
Don't give an address to sections that are not allocated.
...
llvm-svn: 244900
2015-08-13 15:31:17 +00:00
abad6186c3
Place SHF_ALLOC sections first in the output.
...
Having them in the middle of the file complicates the creation of segments.
llvm-svn: 244898
2015-08-13 15:23:46 +00:00
25f51850a4
Delete dead code.
...
llvm-svn: 244896
2015-08-13 14:48:49 +00:00
cde251370a
Include non-alloca sections in the link.
...
llvm-svn: 244895
2015-08-13 14:45:44 +00:00
bdc8f2fb83
Update for llvm api change.
...
llvm-svn: 244849
2015-08-13 00:31:46 +00:00
372889a8e6
Fix an use of uninitialized.
...
Should fix some tests on windows.
llvm-svn: 244834
2015-08-12 23:25:42 +00:00
91009b3856
Fix the alignment of the section headers.
...
Thanks a lot to Rui for noticing it.
llvm-svn: 244711
2015-08-12 01:45:28 +00:00
6b83b90b6a
ELF: Create a string table.
...
For now only the sections are in it, but it already makes the output easier
to read and test.
llvm-svn: 244702
2015-08-12 00:00:24 +00:00
4f89fdad9f
ELF2: Make Defined{Regular,Weak} ctors look the same as other SymbolBody ctors.
...
llvm-svn: 244701
2015-08-11 23:37:25 +00:00
021834046f
Template ELF's OutputSection.
...
This removes what I think is the last hard coded ELF64 structure.
llvm-svn: 244700
2015-08-11 23:34:29 +00:00
52a0f1e8c6
Move more code that is local to Writer.cpp to an anonymous namespace.
...
llvm-svn: 244697
2015-08-11 23:22:24 +00:00
5211c2a1a0
Delete dead code.
...
llvm-svn: 244696
2015-08-11 23:19:06 +00:00
98f6bd09e4
Be a bit more consistent about using uintX_t for offsets and sizes. NFC.
...
llvm-svn: 244694
2015-08-11 23:14:13 +00:00
880632c458
ELF2: Remove unused global variable.
...
A global variable "Driver" is to re-entry to the driver to parse a
.drectve section. Because the need is COFF-specific, we don't need
this variable for ELF.
llvm-svn: 244680
2015-08-11 21:45:55 +00:00
f7b85e0ce2
Fix mismatched sign comparison
...
llvm-svn: 244653
2015-08-11 20:06:51 +00:00
76e24ea955
Add support for weak undefined symbols.
...
llvm-svn: 244640
2015-08-11 17:57:05 +00:00
791e9f9c59
Remove unused templating.
...
llvm-svn: 244639
2015-08-11 17:51:57 +00:00
b13df6582a
Add support for weak symbols.
...
llvm-svn: 244636
2015-08-11 17:33:02 +00:00
ae1b23bd61
Use real values for DefindeFirst and DefinedLast.
...
With this clang notices that switches are fully covered.
llvm-svn: 244632
2015-08-11 17:10:02 +00:00
9247f165ff
Delete unused typedef.
...
llvm-svn: 244628
2015-08-11 16:55:28 +00:00
7c388187c9
Don't report a conflict between two local symbols.
...
llvm-svn: 244624
2015-08-11 16:30:34 +00:00
d8340dae0c
Don't depend on getDotSymtabSec. It is going away.
...
llvm-svn: 244451
2015-08-10 15:12:17 +00:00
1a9344fa26
Use already available symbol tables. NFC.
...
llvm-svn: 244336
2015-08-07 17:16:28 +00:00
df1e05a26c
Delete broken code.
...
This was using a hard coded string table and getting it for every symbol.
The symbol name was already available.
llvm-svn: 244220
2015-08-06 15:33:21 +00:00
49a2ca6ddd
bar
...
llvm-svn: 244219
2015-08-06 15:33:19 +00:00
192e1fa59d
Move the error handling functions to Error.h. NFC.
...
llvm-svn: 244216
2015-08-06 15:08:23 +00:00
cb8474edae
COFF, ELF2: Pass output file path implicitly using Config global variable.
...
Various parameters are passed implicitly using Config global variable
already. Output file path is no different from others, so there was no
special reason to handle that differnetly.
This patch changes the signature of writeResult(SymbolTable *, StringRef)
to writeResult(SymbolTable *).
llvm-svn: 244180
2015-08-05 23:51:50 +00:00
afff74e228
ELF2: Simplify Writer interface.
...
We are using Writer more like a function instead of a class.
This patch makes it a function to simplify the interface.
All details of Writer class is now hidden from other parts of the linker.
llvm-svn: 244169
2015-08-05 23:24:46 +00:00
4b7c2fc64e
Add bare minimum to get a working i386 linux program.
...
llvm-svn: 244050
2015-08-05 15:08:40 +00:00
e7a00e326a
For now we only have on Chunk type. Simplify.
...
The others we have in sight are
* common symbols.
* entries in SHF_MERGE sections.
They will have a substantially different treatment. It is not clear if it is
worth it putting them all in a single list just to dispatch based on the kind on
the other side.
I hope to implement common symbols soon, and then we will be in a position
to have a concrete discussion. For now this is simpler for the the implemented
features.
llvm-svn: 244042
2015-08-05 13:55:34 +00:00
e3335d8a66
Delete dead code.
...
llvm-svn: 244040
2015-08-05 13:26:54 +00:00
3c9cb4b3d3
lld elf2: Diagnose trying to mix incompatible files.
...
This is also a step in instantiating the writer with the correct template
argument.
llvm-svn: 244035
2015-08-05 12:03:34 +00:00
87ee8dcb64
Use ELFOSABI_NONE. This matches both bfd ld and gold.
...
llvm-svn: 244033
2015-08-05 11:55:52 +00:00
aefd5c1617
Create ObjectFile with the correct endian and word size.
...
The writer is still hard coded to 64 bits le, but with this we can test for
invalid ELF files.
llvm-svn: 243993
2015-08-04 15:45:54 +00:00
e0a5c09a5c
Use make_unique. NFC.
...
llvm-svn: 243988
2015-08-04 15:06:36 +00:00
2ffdd4d0e5
The SymbolTable doesn't need to be a template.
...
It was already using just code that is common to all object files.
llvm-svn: 243985
2015-08-04 14:29:01 +00:00
602592a048
Remove a silly return.
...
llvm-svn: 243983
2015-08-04 14:08:11 +00:00
Rafael Espindola