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[DWARFLinker][DWARFv5] add support for DW_FORM_implicit_const form.
This patch adds handling of DW_FORM_implicit_const form. Differential Revision: https://reviews.llvm.org/D146047
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llvm/test/tools/llvm-dwarfutil/ELF/X86/dwarf5-attributes.test
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## Test that DWARFv5 DW_FORM_implicit_const is correctly recognized | ||
## and copied into the result. | ||
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# RUN: yaml2obj %s -o %t.o | ||
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# RUN: llvm-dwarfutil %t.o %t1 | ||
# RUN: llvm-dwarfdump -verify %t1 | FileCheck %s --check-prefix VERIFY-CHECK | ||
# RUN: llvm-dwarfdump -a --verbose %t1 | FileCheck %s | ||
# | ||
# RUN: llvm-dwarfutil --no-garbage-collection %t.o %t1 | ||
# RUN: llvm-dwarfdump -verify %t1 | FileCheck %s --check-prefix VERIFY-CHECK | ||
# RUN: llvm-dwarfdump -a --verbose %t1 | FileCheck %s | ||
# | ||
# RUN: llvm-dwarfutil --no-garbage-collection --build-accelerator=DWARF %t.o %t1 | ||
# RUN: llvm-dwarfdump -verify %t1 | FileCheck %s --check-prefix VERIFY-CHECK | ||
# RUN: llvm-dwarfdump -a --verbose %t1 | FileCheck %s | ||
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#VERIFY-CHECK: No errors. | ||
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#CHECK: .debug_abbrev | ||
#CHECK: DW_TAG_compile_unit | ||
#CHECK: DW_TAG_subprogram | ||
#CHECK: DW_TAG_base_type | ||
#CHECK: DW_TAG_variable | ||
#CHECK: DW_AT_name | ||
#CHECK: DW_AT_const_value DW_FORM_implicit_const 33 | ||
#CHECK: DW_AT_type | ||
#CHECK: DW_TAG_compile_unit | ||
#CHECK: DW_AT_name {{.*}}"CU1" | ||
#CHECK: DW_AT_low_pc | ||
#CHECK: DW_AT_high_pc | ||
#CHECK: DW_TAG_subprogram | ||
#CHECK: DW_AT_name {{.*}}"foo1" | ||
#CHECK: DW_AT_low_pc | ||
#CHECK: DW_AT_high_pc | ||
#CHECK: DW_TAG_variable | ||
#CHECK: DW_AT_name {{.*}}"var1" | ||
#CHECK: DW_AT_const_value [DW_FORM_implicit_const] (33) | ||
#CHECK: DW_AT_type {{.*}}"int" | ||
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--- !ELF | ||
FileHeader: | ||
Class: ELFCLASS64 | ||
Data: ELFDATA2LSB | ||
Type: ET_REL | ||
Machine: EM_X86_64 | ||
Sections: | ||
- Name: .text | ||
Type: SHT_PROGBITS | ||
Flags: [ SHF_ALLOC, SHF_EXECINSTR ] | ||
Address: 0x1130 | ||
Size: 0x60 | ||
DWARF: | ||
debug_abbrev: | ||
- Table: | ||
- Tag: DW_TAG_compile_unit | ||
Children: DW_CHILDREN_yes | ||
Attributes: | ||
- Attribute: DW_AT_producer | ||
Form: DW_FORM_string | ||
- Attribute: DW_AT_language | ||
Form: DW_FORM_data2 | ||
- Attribute: DW_AT_name | ||
Form: DW_FORM_string | ||
- Attribute: DW_AT_low_pc | ||
Form: DW_FORM_addrx | ||
- Attribute: DW_AT_high_pc | ||
Form: DW_FORM_data8 | ||
- Attribute: DW_AT_addr_base | ||
Form: DW_FORM_sec_offset | ||
- Tag: DW_TAG_subprogram | ||
Children: DW_CHILDREN_yes | ||
Attributes: | ||
- Attribute: DW_AT_name | ||
Form: DW_FORM_string | ||
- Attribute: DW_AT_low_pc | ||
Form: DW_FORM_addrx | ||
- Attribute: DW_AT_high_pc | ||
Form: DW_FORM_data8 | ||
- Attribute: DW_AT_type | ||
Form: DW_FORM_ref4 | ||
- Tag: DW_TAG_base_type | ||
Children: DW_CHILDREN_no | ||
Attributes: | ||
- Attribute: DW_AT_name | ||
Form: DW_FORM_string | ||
- Tag: DW_TAG_variable | ||
Children: DW_CHILDREN_no | ||
Attributes: | ||
- Attribute: DW_AT_name | ||
Form: DW_FORM_string | ||
- Attribute: DW_AT_const_value | ||
Form: DW_FORM_implicit_const | ||
Value: 33 | ||
- Attribute: DW_AT_type | ||
Form: DW_FORM_ref4 | ||
debug_info: | ||
- Version: 5 | ||
UnitType: DW_UT_compile | ||
Entries: | ||
- AbbrCode: 1 | ||
Values: | ||
- CStr: by_hand | ||
- Value: 0x04 | ||
- CStr: CU1 | ||
- Value: 0x0 | ||
- Value: 0x10 | ||
- Value: 0x8 | ||
- AbbrCode: 2 | ||
Values: | ||
- CStr: foo1 | ||
- Value: 0x0 | ||
- Value: 0x10 | ||
- Value: 0x3c | ||
- AbbrCode: 0 | ||
- AbbrCode: 3 | ||
Values: | ||
- CStr: int | ||
- AbbrCode: 4 | ||
Values: | ||
- CStr: var1 | ||
- Value: 0x00000000 | ||
- Value: 0x0000003c | ||
- AbbrCode: 0 | ||
debug_addr: | ||
- Version: 5 | ||
AddressSize: 0x08 | ||
Entries: | ||
- Address: 0x1130 | ||
... |