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 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
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
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
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
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
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 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 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 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
This patch implements the .debug_rnglists section. We are able to
produce the .debug_rnglists section by the following syntax.
```
debug_rnglists:
- Format: DWARF32 ## Optional
Length: 0x1234 ## Optional
Version: 5 ## Optional
AddressSize: 0x08 ## Optional
SegmentSelectorSize: 0x00 ## Optional
OffsetEntryCount: 2 ## Optional
Offsets: [1, 2] ## Optional
Lists:
- Entries:
- Operator: DW_RLE_base_address
Values: [ 0x1234 ]
```
The generated .debug_rnglists is verified by llvm-dwarfdump, except for
the operator DW_RLE_startx_endx, since llvm-dwarfdump doesn't support
it.
Reviewed By: jhenderson
Differential Revision: https://reviews.llvm.org/D83624
This patch helps add support for emitting the .debug_str_offsets section
to yaml2elf.
Reviewed By: jhenderson, MaskRay
Differential Revision: https://reviews.llvm.org/D83853
This patch helps add support for emitting the .debug_gnu_pubnames and .debug_gnu_pubtypes sections.
The .debug_gnu_pub* sections is verified by llvm-dwarfdump.
Known issues:
- Doesn't support emitting multiple pub-tables.
Reviewed By: jhenderson
Differential Revision: https://reviews.llvm.org/D82367
This patch helps add the missing context `IsGNUStyle`. Before this patch, yaml2obj cannot parse the YAML description of 'debug_gnu_pubnames' and 'debug_gnu_pubtypes' correctly due to the missing context.
In other words, if we have
```
DWARF:
debug_gnu_pubtypes:
Length:
TotalLength: 0x1234
Version: 2
UnitOffset: 0x1234
UnitSize: 0x4321
Entries:
- DieOffset: 0x12345678
Name: abc
Descriptor: 0x00 ## Descriptor can never be mapped into Entry.Descriptor
```
yaml2obj will complain that "error: unknown key 'Descriptor'".
This patch helps resolve this problem.
Reviewed By: jhenderson
Differential Revision: https://reviews.llvm.org/D82435
'InitialLength' is replaced with 'Format' (DWARF32 by default) and 'Length' in this patch.
Besides, test cases for DWARFv4 and DWARFv5, DWARF32 and DWARF64 is
added.
Reviewed By: jhenderson
Differential Revision: https://reviews.llvm.org/D82622
This patch helps add support for emitting the .debug_pubnames section to yaml2elf.
Known issues:
- Current implementation doesn't support emitting multiple sets of entries.
- Doesn't support DWARF64.
Reviewed By: jhenderson
Differential Revision: https://reviews.llvm.org/D82296
This patch helps add support for emitting the .debug_info section to yaml2elf.
Reviewed By: jhenderson, grimar, MaskRay
Differential Revision: https://reviews.llvm.org/D82073
This patch enables yaml2elf emit the .debug_abbrev section.
The generated .debug_abbrev is verified using `llvm-dwarfdump`.
Known issues that will be addressed later:
- Current implementation doesn't support generating multiple abbreviation tables in one .debug_abbrev section.
Reviewed By: jhenderson, grimar
Differential Revision: https://reviews.llvm.org/D81820
This patch adds a new field `bool Is64bit` in `DWARFYAML::Data` to indicate the address size of target. It's helpful for inferring the `AddrSize` in some DWARF sections.
Reviewed By: MaskRay
Differential Revision: https://reviews.llvm.org/D81709
Before this patch, we have to calculate the offset for the current range list entry. This patch helps make the "Offset" field optional.
Reviewed By: jhenderson
Differential Revision: https://reviews.llvm.org/D81220
This patch enables yaml2elf emit the .debug_line section.
Test cases for emitting the dwarf64 .debug_line section and opcodes will be added later.
Known issues:
- We should replace `InitialLength` with `Format` and `Length`
- Currently implementation of the .debug_line section only fully supports DWARFv2, some header fields in DWARFv4 and DWARFv5 is missing, e.g., `header_length` in DWARFv4, `address_size` and `segment_selector_size` in DWARFv5.
- Some opcodes relies on the .debug_info section, we should warn user about it.
These issues will be addressed in a follow-up patch.
Reviewed By: jhenderson, grimar
Differential Revision: https://reviews.llvm.org/D81450
This patch addresses the comment in [D80972](https://reviews.llvm.org/D80972#inline-744217).
Before this patch, the initial length field of .debug_aranges section should be declared as:
```
## 32-bit DWARF
debug_aranges:
- Length:
TotalLength: 0x20
Version: 2
...
## 64-bit DWARF
debug_aranges:
- Length:
TotalLength: 0xffffffff
TotalLength64: 0x20
Version: 2
...
```
After this patch:
```
## 32-bit DWARF
debug_aranges:
- [[Format: DWARF32]] ## Optional
Length: 0x20
Version: 2
...
## 64-bit DWARF
debug_aranges:
- Format: DWARF64
Length: 0x20
Version: 2
```
Current implementation of generating DWARF64 .debug_aranges section is buggy. A follow-up patch will improve it and add test cases for DWARF64.
Reviewed By: jhenderson
Differential Revision: https://reviews.llvm.org/D81063
This patch enables yaml2obj to emit the .debug_aranges section in ELFYAML.
Known issues:
- The current implementation of `debug_aranges` doesn't support emitting `segment` in the `(segment, address, length)` tuple. I will fix it in a follow-up patch.
Reviewed By: jhenderson
Differential Revision: https://reviews.llvm.org/D80972
This patch helps make the `PubSection` optional in the DWARF structure.
Reviewed By: jhenderson, aprantl
Differential Revision: https://reviews.llvm.org/D80722
Xing GUO