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[DWARFYAML] Abbrev codes in a new abbrev table should start from 1 (by default).

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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 commit is contained in:
Xing GUO 2020-08-28 18:42:19 +08:00
parent 2a1fa7b84c
commit c0f8e4de72
2 changed files with 13 additions and 4 deletions
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2
lib/ObjectYAML/DWARFEmitter.cpp
View File

@ -95,8 +95,8 @@ Error DWARFYAML::emitDebugStr(raw_ostream &OS, const DWARFYAML::Data &DI) {
}
Error DWARFYAML::emitDebugAbbrev(raw_ostream &OS, const DWARFYAML::Data &DI) {
uint64_t AbbrevCode = 0;
for (const DWARFYAML::AbbrevTable &AbbrevTable : DI.DebugAbbrev) {
uint64_t AbbrevCode = 0;
for (const DWARFYAML::Abbrev &AbbrevDecl : AbbrevTable.Table) {
AbbrevCode =
AbbrevDecl.Code ? (uint64_t)*AbbrevDecl.Code : AbbrevCode + 1;

15
test/tools/yaml2obj/ELF/DWARF/debug-abbrev.yaml
View File

@ -277,9 +277,12 @@ DWARF:
## ^- abbreviation code (ULEB128) 0x04
## ^- abbreviation code (ULEB128) 0x04
##
# CODE-NEXT: 0x00000010 2e000000 052e0000 00062e00 0000
## ^- abbreviation code ULEB128
## ^- abbreviation code ULEB128
# CODE-NEXT: 0x00000010 2e000000 052e0000 00062e00 00000001
## ^- abbreviation code ULEB128
## ^- abbreviation code ULEB128
## ^- abbreviation code ULEB128
# CODE-NEXT: 0x00000020 11000000 022e0000 0000
## ^- abbreviation code ULEB128
--- !ELF
FileHeader:
@ -303,6 +306,12 @@ DWARF:
Children: DW_CHILDREN_no
- Tag: DW_TAG_subprogram
Children: DW_CHILDREN_no
- Table:
## Test that the abbrev codes in a new table start from 1 by default.
- Tag: DW_TAG_compile_unit
Children: DW_CHILDREN_no
- Tag: DW_TAG_subprogram
Children: DW_CHILDREN_no
## i) Test that yaml2obj emits an error message when there are non-empty compilation units
## and multiple abbrev tables are assigned the same ID.