[Lldb-commits] [lldb] [LLDB] Impove ObjectFileELF's .dynamic parsing and usage. (PR #101237)

[Pavel Labath via lldb-commits]

================
@@ -0,0 +1,49 @@
+// REQUIRES: system-linux, native
----------------
labath wrote:

This test still requires linux a bunch of system dependencies. Here's a self-contained version that can be run anywhere (just run the input through yaml2obj and give it to lldb). I took `test/tools/llvm-readobj/ELF/needed-libs.test:` and adapted it for our use case -- I added DT_DEBUG as that's important for lldb, but you can also easily add any other tag you deem necessary
```
--- !ELF
FileHeader:
  Class:   ELFCLASS64
  Data:    ELFDATA2LSB
  Type:    ET_EXEC
  Machine: EM_X86_64
Sections:
  - Type:      SectionHeaderTable
    NoHeaders: true
  - Name:  .dynstr
    Type:  SHT_STRTAB
    Flags: [ SHF_ALLOC ]
    Content: '00616161006262620063636300' ## 0,a,a,a,0,b,b,b,0,c,c,c,0
    Size:    0x100
  - Name:    .dynamic
    Type:    SHT_DYNAMIC
    Address: 0x100
    Entries:
      - Tag:   DT_STRTAB
        Value: 0x0000000000000000
      - Tag:   DT_NEEDED
        Value: 9
      - Tag:   DT_NEEDED
        Value: 1
      - Tag:   DT_NEEDED
        Value: 5
      - Tag:   DT_STRSZ
        Value: 0x100
      - Tag:   DT_DEBUG
        Value: 0xdeadbeef
      - Tag:   DT_NULL
        Value: 0x0
ProgramHeaders:
  - Type: PT_LOAD
    VAddr: 0x0
    FirstSec: .dynstr
    LastSec:  .dynamic
  - Type:            PT_DYNAMIC
    FirstSec:        .dynamic
    LastSec:         .dynamic
    VAddr:           0x100
    Align:           0x8
```

https://github.com/llvm/llvm-project/pull/101237