Chunk has writeTo function which takes uint8_t *Buf.
writeHeaderTo feels more consistent with that because this member
function also takes uint8_t *Buf.
llvm-svn: 239236
Previously, half of the constructor for .idata contents was in Chunks.cpp
and the rest was in Writer.cpp. This patch moves the latter to Chunks.cpp.
Now IdataContents class manages everything for .idata section.
llvm-svn: 239230
In this design, Chunk is the only thing that knows how to write
its contents to output file as well as how to apply relocations
there. The writer shouldn't know about the details.
llvm-svn: 239216
Not only entry point symbol but also symbols specified by /include
option must be preserved, as they will never be dead-stripped.
http://reviews.llvm.org/D10220
llvm-svn: 239005
I'm adding ordinal-only (nameless) imports to the import table.
The chunk for that type is going to be different from LookupChunk.
Without this change, we cannot add objects of the new type to the
vectors.
llvm-svn: 238779
Instead of returning non-categorized errors, return categorized errors.
All uses of make_dynamic_error_code are removed.
Because we don't have error reporting mechanism, I just chose to print out
error messages to stderr, and then return an error object. Not sure if
that's the right thing to do, but at least it seems practical.
http://reviews.llvm.org/D10129
llvm-svn: 238714
Section names were truncated to 8 bytes because the section table's
name field is 8 byte long. This patch creates the string table to
store long names.
llvm-svn: 238661
The new mechanism is less code, and fixes the case where all inputs
are archives.
Differential Revision: http://reviews.llvm.org/D10136
llvm-svn: 238618
Previously Writer directly handles writes to a file.
Chunks needed to give Writer a continuous chunk of memory.
That was inefficent if you construct data in chunks because
it would require two memory copies (one to construct a chunk
and the other is to write that to a file).
This patch teaches chunk to write directly to a file.
From readability point of view, this is also good because
you no longer have to call hasData() before calling getData().
llvm-svn: 238464
This is an initial patch for a section-based COFF linker.
The patch has 2300 lines of code including comments and blank lines.
Before diving into details, you want to start from reading README
because it should give you an overview of the design.
All important things are written in the README file, so I write
summary here.
- The linker is already able to self-link on Windows.
- It's significantly faster than the existing implementation.
The existing one takes 5 seconds to link LLD on my machine,
while the new one only takes 1.2 seconds, even though the new
one is not multi-threaded yet. (And a proof-of-concept multi-
threaded version was able to link it in 0.5 seconds.)
- It uses much less memory (250MB vs. 2GB virtual memory space
to self-host).
- IMHO the new code is much simpler and easier to read than
the existing PE/COFF port.
http://reviews.llvm.org/D10036
llvm-svn: 238458
Rui Ueyama