cead4eceb0
Currently, llvm-symbolizer doesn't like to parse .debug_info in order to show the line info for global variables. addr2line does this. In the future, I'm looking to migrate AddressSanitizer off of internal metadata over to using debuginfo, and this is predicated on being able to get the line info for global variables. This patch adds the requisite support for getting the line info from the .debug_info section for symbolizing global variables. This only happens when you ask for a global variable to be symbolized as data. Reviewed By: dblaikie Differential Revision: https://reviews.llvm.org/D123538
56 lines
1.3 KiB
YAML
56 lines
1.3 KiB
YAML
## Function and data symbols have different addresses so internally we treat
|
|
## STT_NOTYPE/STT_FUNC/STT_DATA/etc the same. The DATA command may get a function
|
|
## as result. For regular applications, the input addresses are guaranteed to be
|
|
## related to data symbols.
|
|
# RUN: yaml2obj %s -o %t
|
|
# RUN: llvm-symbolizer --obj=%t 'DATA 0x1000' 'DATA 0x2000' 'DATA 0x2002' | FileCheck %s
|
|
|
|
# CHECK: func
|
|
# CHECK-NEXT: 4096 1
|
|
# CHECK-NEXT: ??:?
|
|
# CHECK-EMPTY:
|
|
# CHECK-NEXT: data
|
|
# CHECK-NEXT: 8192 2
|
|
# CHECK-NEXT: ??:?
|
|
# CHECK-EMPTY:
|
|
# CHECK-NEXT: notype
|
|
# CHECK-NEXT: 8194 3
|
|
# CHECK-NEXT: ??:?
|
|
# CHECK-EMPTY:
|
|
|
|
--- !ELF
|
|
FileHeader:
|
|
Class: ELFCLASS64
|
|
Data: ELFDATA2LSB
|
|
Type: ET_EXEC
|
|
Machine: EM_X86_64
|
|
Sections:
|
|
- Name: .text
|
|
Type: SHT_PROGBITS
|
|
Flags: [ SHF_ALLOC, SHF_EXECINSTR ]
|
|
Address: 0x1000
|
|
Size: 1
|
|
- Name: .data
|
|
Type: SHT_PROGBITS
|
|
Flags: [ SHF_WRITE, SHF_ALLOC ]
|
|
Address: 0x2000
|
|
Size: 5
|
|
Symbols:
|
|
- Name: func
|
|
Type: STT_FUNC
|
|
Section: .text
|
|
Binding: STB_GLOBAL
|
|
Value: 0x1000
|
|
Size: 1
|
|
- Name: data
|
|
Type: STT_OBJECT
|
|
Section: .data
|
|
Binding: STB_GLOBAL
|
|
Value: 0x2000
|
|
Size: 2
|
|
- Name: notype
|
|
Section: .data
|
|
Binding: STB_GLOBAL
|
|
Value: 0x2002
|
|
Size: 3
|