Summary:
Now DISubroutineType has a 'cc' field which should be a DW_CC_ enum. If
it is present and non-zero, the backend will emit it as a
DW_AT_calling_convention attribute. On the CodeView side, we translate
it to the appropriate enum for the LF_PROCEDURE record.
I added a new LLVM vendor specific enum to the list of DWARF calling
conventions. DWARF does not appear to attempt to standardize these, so I
assume it's OK to do this until we coordinate with GCC on how to emit
vectorcall convention functions.
Reviewers: dexonsmith, majnemer, aaboud, amccarth
Subscribers: mehdi_amini, llvm-commits
Differential Revision: http://reviews.llvm.org/D21114
llvm-svn: 272197
This reverts commit r271962 and reinstantes r271957.
MSVC's linker doesn't appear to like it if you have an empty symbol
substream, so only open a symbol substream if we're going to emit
something about globals into it.
Makes check-asan pass.
llvm-svn: 271965
This is the simplest possible patch to get some kind of YAML
output. All it dumps is the MSF header fields so that in
theory an empty MSF file could be reconstructed.
Reviewed By: ruiu, majnemer
Differential Revision: http://reviews.llvm.org/D20971
llvm-svn: 271939
The data strucutre in the new FPO stream is described in the
PE/COFF spec. There is one record per function if frame pointer
is omitted.
Differential Revision: http://reviews.llvm.org/D20999
llvm-svn: 271926
This only translates data members for now. Translating overloaded
methods is complicated, so I stopped short of doing that.
Reviewers: aaboud
Differential Revision: http://reviews.llvm.org/D20924
llvm-svn: 271680
When printing line information and file checksums, we were printing
the file offset field from the struct header. This teaches
llvm-pdbdump how to turn those numbers into the filename. In the
case of file checksums, this is done by looking in the global
string table. In the case of line contributions, this is done
by indexing into the file names buffer of the DBI stream. Why
they use a different technique I don't know.
llvm-svn: 271630
To facilitate this, a couple of changes had to be made:
1. `ModuleSubstream` got moved from `DebugInfo/PDB` to
`DebugInfo/CodeView`, and various codeview related types are defined
there. It turns out `DebugInfo/CodeView/Line.h` already defines many of
these structures, but this is really old code that is not endian aware,
doesn't interact well with `StreamInterface` and not very helpful for
getting stuff out of a PDB. Eventually we should migrate the old readobj
`COFFDumper` code to these new structures, or at least merge their
functionality somehow.
2. A `ModuleSubstream` visitor is introduced. Depending on where your
module substream array comes from, different subsets of record types can
be expected. We are already hand parsing these substream arrays in many
places especially in `COFFDumper.cpp`. In the future we can migrate these
paths to the visitor as well, which should reduce a lot of code in
`COFFDumper.cpp`.
Differential Revision: http://reviews.llvm.org/D20936
Reviewed By: ruiu, majnemer
llvm-svn: 271621
This first pass only splits apart the records and dumps the line
info kinds and binary data. Subsequent patches will parse out
the binary data into more useful information and dump it in
detail.
llvm-svn: 271576
Unlike other sections that can grow to any size, the COFF section header
stream has maximum length because each record is fixed size and the COFF
file format limits the maximum number of sections. So I decided to not
create a specific stream class for it. Instead, I added a member function
to DbiStream class which returns a vector of COFF headers.
Differential Revision: http://reviews.llvm.org/D20717
llvm-svn: 271557
The DIType* for void is the null pointer. A null DIType can never be a
qualified type, so we can just exit the loop at this point and go to
getTypeIndex(BaseTy).
Fixes PR27984
llvm-svn: 271550
Use the type index of the underlying type unless we have a typedef from
long to HRESULT; HRESULT typedefs are translated to T_HRESULT.
llvm-svn: 271494
Summary:
This is meant to be the tiniest step towards DIType to CV type index
translation that I could come up with. Whenever translation fails, we use type
index zero, which is the unknown type.
Reviewers: aaboud, zturner
Subscribers: llvm-commits, amccarth
Differential Revision: http://reviews.llvm.org/D20840
llvm-svn: 271408
Adds the method MCStreamer::EmitBinaryData, which is usually an alias
for EmitBytes. In the MCAsmStreamer case, it is overridden to emit hex
dump output like this:
.byte 0x0e, 0x00, 0x08, 0x10
.byte 0x03, 0x00, 0x00, 0x00
.byte 0x00, 0x00, 0x00, 0x00
.byte 0x00, 0x10, 0x00, 0x00
Also, when verbose asm comments are enabled, this patch prints the dump
output for each comment before its record, like this:
# ArgList (0x1000) {
# TypeLeafKind: LF_ARGLIST (0x1201)
# NumArgs: 0
# Arguments [
# ]
# }
.byte 0x06, 0x00, 0x01, 0x12
.byte 0x00, 0x00, 0x00, 0x00
This should make debugging easier and testing more convenient.
Reviewers: aaboud
Subscribers: majnemer, zturner, amccarth, aaboud, llvm-commits
Differential Revision: http://reviews.llvm.org/D20711
llvm-svn: 271313
Summary:
This allows the linker to discard unused symbol information for comdat
functions that were discarded during the link. Before this change,
searching for the name of an inline function in the debugger would
return multiple results, one per symbol subsection in the object file.
After this change, there is only one result, the result for the function
chosen by the linker.
Reviewers: zturner, majnemer
Subscribers: aaboud, amccarth, llvm-commits
Differential Revision: http://reviews.llvm.org/D20642
llvm-svn: 270792
This patch modifies the LiveDebugValues pass to use more efficient set
data structures as outlined in PR26055. Both VarLocSet and VarLocList are
now SparseBitVectors which allows us to perform much faster bitvector
arithmetic on them.
The speedup can be in the order of minutes especially on ASANified code.
The change is not NFC in the assembler output because the inserted
DBG_VALUEs are now sorted by variable and location.
Many thanks to Daniel Berlin for helping design the improved algorithm and
reviewing the patch.
https://llvm.org/bugs/show_bug.cgi?id=26055http://reviews.llvm.org/D20178
rdar://problem/24091200
llvm-svn: 270776
name_ids() did not return all IDs but only the first NameCount items.
The number of non-zero entries in IDs vector is NameCount, but it
does not mean that all non-zero entries are at the beginning of IDs
vector.
Differential Revision: http://reviews.llvm.org/D20611
llvm-svn: 270656
This adds support for parsing and dumping the following
symbol types:
S_LPROCREF
S_ENVBLOCK
S_COMPILE2
S_REGISTER
S_COFFGROUP
S_SECTION
S_THUNK32
S_TRAMPOLINE
As of this patch, the test PDB files no longer have any unknown
symbol types.
llvm-svn: 270628
These attributes aren't used by other debuggers (& may be confused with
other DWARF extensions) so they just waste space (about 1.5% on .dwo
file size on a random large program I tested).
We could remove the ObjC property ones too, but I figured they were
probably more necessary when trying to understand ObjC (I could be wrong
though) & so any debugger interested in working with ObjC would use
them, perhaps? (also, there are some legacy tests in Clang that test for
them - making it one of those annoying cross-project commits and/or
cleanup to refactor those tests)
llvm-svn: 270613
When dumping huge PDB files, too many of the options were grouped
together so you would get neverending spew of output. This patch
introduces more granular display options so you can only dump the
fields you actually care about.
llvm-svn: 270607
This makes use of the newly introduced `CVSymbolVisitor` to dump details
of each type of symbol record in the symbol streams. Future patches will
bring this visitor based dumping to the publics stream, as well as
creating a `SymbolDumpDelegate` to print more information about
relocations etc.
Differential Revision: http://reviews.llvm.org/D20545
Reviewed By: ruiu
llvm-svn: 270585
Fix was:
1) Had to regenerate dwarfdump-test-zlib.elf-x86-64, dwarfdump-test-zlib-gnu.elf-x86-64
(because llvm-symbolizer-zlib.test uses that inputs for its purposes and failed).
2) Updated llvm-symbolizer-zlib.test (updated used call function address to match new files +
added one more check for newly created dwarfdump-test-zlib-gnu.elf-x86-64 binary input).
3) Updated comment in dwarfdump-test-zlib.cc.
Original commit message:
[llvm-dwarfdump] - Teach dwarfdump to decompress debug sections in zlib style.
Before this llvm-dwarfdump only recognized zlib-gnu compression style of headers,
this patch adds support for zlib style.
It looks reasonable to support both styles for dumping,
even if we are not going to suport generating of deprecated gnu one.
Differential revision: http://reviews.llvm.org/D20470
llvm-svn: 270557
fix: forgot to commit the updated dwarfdump-test-zlib.elf-x86-64
Original commit message:
[llvm-dwarfdump] - Teach dwarfdump to decompress debug sections in zlib style.
Before this llvm-dwarfdump only recognized zlib-gnu compression style of headers,
this patch adds support for zlib style.
It looks reasonable to support both styles for dumping,
even if we are not going to suport generating of deprecated gnu one.
Differential revision: http://reviews.llvm.org/D20470
llvm-svn: 270543
