This patch makes the debug_ranges section optional. When we specify an
empty debug_ranges section, yaml2obj only emits the section header.
Reviewed By: jhenderson
Differential Revision: https://reviews.llvm.org/D87263
This patch makes the debug_addr section optional. When an empty
debug_addr section is specified, yaml2obj only emits a section header
for it.
Reviewed By: jhenderson
Differential Revision: https://reviews.llvm.org/D87205
This is the split part of D86269, which add a new ELF machine flag called EM_CSKY and related relocations.
Some target-specific flags and tests for csky can be added in follow-up patches later.
Differential Revision: https://reviews.llvm.org/D86610
This patch enables users to handcraft custom contents for DWARF
sections. If we specify the contents of DWARF sections both in the
'DWARF' entry and the 'content', yaml2obj will emit an error message.
In addition, this patch helps remove the restriction that only the
content of sections whose segname are __DWARF can be specified in the
"DWARF" entry.
Reviewed By: jhenderson
Differential Revision: https://reviews.llvm.org/D87126
This patch makes the debug_str section optional. When the debug_str
section exists but doesn't contain anything, yaml2obj will emit a
section header for it.
Reviewed By: grimar
Differential Revision: https://reviews.llvm.org/D86860
This patch helps make the debug_abbrev_offset field optional. We don't
need to calculate the value of this field in the future.
Reviewed By: jhenderson
Differential Revision: https://reviews.llvm.org/D86614
The abbrev codes in a new abbrev table should start from 1 (by default),
rather than inherit the value from the code in the previous table.
Reviewed By: jhenderson
Differential Revision: https://reviews.llvm.org/D86545
This patch makes the unit_length and header_length fields of line tables
optional. yaml2obj is able to infer them for us.
Reviewed By: jhenderson
Differential Revision: https://reviews.llvm.org/D86590
This patch makes the 'Attributes' field optional. We don't need to
explicitly specify the 'Attributes' field in the future.
Reviewed By: jhenderson, grimar
Differential Revision: https://reviews.llvm.org/D86537
The original commit (7ff0ace96db9164dcde232c36cab6519ea4fce8) was causing
build failure and was reverted in 6d242a7326
==================== Original Commit Message ====================
This patch adds support for referencing different abbrev tables. We use
'ID' to distinguish abbrev tables and use 'AbbrevTableID' to explicitly
assign an abbrev table to compilation units.
The syntax is:
```
debug_abbrev:
- ID: 0
Table:
...
- ID: 1
Table:
...
debug_info:
- ...
AbbrevTableID: 1 ## Reference the second abbrev table.
- ...
AbbrevTableID: 0 ## Reference the first abbrev table.
```
Reviewed By: jhenderson
Differential Revision: https://reviews.llvm.org/D83116
This patch adds support for referencing different abbrev tables. We use
'ID' to distinguish abbrev tables and use 'AbbrevTableID' to explicitly
assign an abbrev table to compilation units.
The syntax is:
```
debug_abbrev:
- ID: 0
Table:
...
- ID: 1
Table:
...
debug_info:
- ...
AbbrevTableID: 1 ## Reference the second abbrev table.
- ...
AbbrevTableID: 0 ## Reference the first abbrev table.
```
Reviewed By: jhenderson
Differential Revision: https://reviews.llvm.org/D83116
This patch adds support for emitting multiple abbrev tables. Currently,
compilation units will always reference the first abbrev table.
Reviewed By: jhenderson, labath
Differential Revision: https://reviews.llvm.org/D86194
Currently we have to set 'Machine' to something in our
YAML descriptions. Usually we use 'EM_X86_64' for 64-bit targets
and 'EM_386' for 32-bit targets. At the same time, in fact, in most
cases our tests do not need a machine type and we can use
'EM_NONE'.
This is cleaner, because avoids the need of using a particular machine.
In this patch I've made the 'Machine' key optional (the default value,
when it is not specified is `EM_NONE`) and removed it (where possible)
from yaml2obj, obj2yaml and llvm-readobj tests.
There are few tests left where I decided not to remove it, because
I didn't want to touch CHECK lines or doing anything more complex
than a removing a "Machine: *" line and formatting lines around.
Differential revision: https://reviews.llvm.org/D86202
We currently call the `llvm_unreachable` for the following YAML:
```
--- !ELF
FileHeader:
Class: ELFCLASS32
Data: ELFDATA2LSB
Type: ET_REL
Machine: EM_NONE
Flags: [ ]
```
it happens because the `Flags` key is present, though `EM_NONE` is a
machine type that has no known `EF_*` values and we call `llvm_unreachable` by mistake.
Differential revision: https://reviews.llvm.org/D86138
This change replaces the InitialLength of pub-tables with Format and
Length. All the InitialLength fields have been removed.
Reviewed By: jhenderson
Differential Revision: https://reviews.llvm.org/D85880
This patch makes the 'AddrSize' field optional. If the address size is
missing, yaml2obj will infer it from the object file.
Reviewed By: jhenderson
Differential Revision: https://reviews.llvm.org/D85805
The following issues are addressed in this patch.
1. The operands of DW_LNE_set_discriminator should be an ULEB128 number
rather than an address.
2. Test the emitted opcodes.
Reviewed By: jhenderson
Differential Revision: https://reviews.llvm.org/D85717
Currently, the line table uses the first compilation unit's address size
as its address size. It's not the right behavior. The address size should be
inferred from the target machine.
Reviewed By: jhenderson
Differential Revision: https://reviews.llvm.org/D85707
This patch refactors the DWARF section dumpers. When dumping a DWARF
section, if the DWARF parser fails to parse the section, we will dump it
as a raw content section. This patch also fixes a bug in
DWARFYAML::Data::isEmpty(). Finally, a test case that tests dumping the
__debug_aranges section is added.
Reviewed By: jhenderson, grimar
Differential Revision: https://reviews.llvm.org/D85506
This patch makes the 'Values' field optional. This is useful when we
handcraft the terminating entry of DIEs.
```
debug_info:
- Version: 4
...
Entries:
- AbbrCode: 1
Values:
- Value: 0x1234
- AbbrCode: 0 ## Termination
```
Reviewed By: jhenderson, grimar
Differential Revision: https://reviews.llvm.org/D85397
Unit.Format, Unit.Version and Unit.AddrSize are replaced with
dwarf::FormParams in D84496 to get rid of unnecessary functions
getOffsetSize() and getRefSize(). However, that change makes it
difficult to make AddrSize optional (Optional<uint8_t>). This change
pulls out dwarf::FormParams from DWARFYAML::Unit and use it as a helper
struct in DWARFYAML::emitDebugInfo().
Reviewed By: jhenderson, MaskRay
Differential Revision: https://reviews.llvm.org/D85296
The offsets field should be omitted when the 'OffsetEntryCount' entry is
specified to be 0.
Reviewed By: jhenderson
Differential Revision: https://reviews.llvm.org/D85006
This patch makes the 'debug_aranges' entry optional. If the entry is
empty, yaml2obj will only emit the header for it.
Reviewed By: jhenderson
Differential Revision: https://reviews.llvm.org/D84921
In this patch, we add a helper function getDWARFEmitterByName(). This
function returns the proper DWARF section emitting method by the name.
Reviewed By: jhenderson
Differential Revision: https://reviews.llvm.org/D84952
In this patch, emitDebugPubnames(), emitDebugPubtypes(),
emitDebugGNUPubnames(), emitDebugGNUPubtypes() are added.
Reviewed By: jhenderson
Differential Revision: https://reviews.llvm.org/D85003
This patch makes the 'Length' field of the address range table optional.
Reviewed By: jhenderson
Differential Revision: https://reviews.llvm.org/D84911
This patch makes the 'AddressSize' and 'SegmentSelectorSize' fields of
address range table optional.
Reviewed By: jhenderson
Differential Revision: https://reviews.llvm.org/D84907
This patch renames checkListEntryOperands() to checkOperandCount(), so
that we are able to check DWARF expression operands using the same
function.
Reviewed By: jhenderson, labath
Differential Revision: https://reviews.llvm.org/D84624
This patch adds support for emitting custom range list content.
We are able to handcraft a custom range list via the following syntax.
```
debug_rnglists:
- Lists:
- Entries:
- Operator: DW_RLE_startx_endx
Values: [ 0x1234, 0x1234 ]
- Content: '1234567890abcdef'
- Content: 'abcdef1234567890'
```
Reviewed By: jhenderson
Differential Revision: https://reviews.llvm.org/D84618
This adds the `ShType` key similar to others `Sh*` keys we have.
My use case is the following. Imagine we have a `SHT_SYMTAB_SHNDX`
section and want to hide it from a dumper. The natural way would be to
do something like:
```
- Name: .symtab_shndx
Type: [[TYPE=SHT_SYMTAB_SHNDX]]
Entries: [ 0, 1 ]
```
and then change the TYPE from `SHT_SYMTAB_SHNDX` to something else,
for example to `SHT_PROGBITS`.
But we have a problem: regular sections does not have `Entries` key,
so yaml2obj will be unable to produce a section.
The solution is to introduce a `ShType` key to override the final type.
This is not the first time I am facing the need to change the type. I
was able to invent workarounds or solved issues differently in the past,
but finally came to conclusion that we just should support the `ShType`.
Differential revision: https://reviews.llvm.org/D84738
This patch refactors `emitDebugInfo()` to make the length field be
inferred from its content. Besides, the `Visitor` class is removed in
this patch. The original `Visitor` class helps us determine an
appropriate length and emit the .debug_info section. These two
processes can be merged into one process. Besides, the length field
should be inferred when it's missing rather than when it's zero.
Reviewed By: jhenderson, labath
Differential Revision: https://reviews.llvm.org/D84008
This patch helps pull out some common helper functions for range list
and location list tables. NFC.
Reviewed By: jhenderson
Differential Revision: https://reviews.llvm.org/D84383
This patch refactors the range list table to hold both the range list
table and the location list table.
Reviewed By: jhenderson, labath
Differential Revision: https://reviews.llvm.org/D84239
Xing GUO