[Lldb-commits] [PATCH] D137057: [LLDB][LoongArch] Add LoongArch ArchSpec and subtype detection

[Tiezhu Yang via Phabricator via lldb-commits]

seehearfeel created this revision.
seehearfeel added reviewers: SixWeining, wangleiat, xen0n, xry111, MaskRay, DavidSpickett.
Herald added subscribers: StephenFan, emaste.
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seehearfeel requested review of this revision.
Herald added a project: LLDB.
Herald added a subscriber: lldb-commits.

Define LoongArch architecture subtypes, add the LoongArch ArchSpec bits,
and inspect the ELF header to detect the right subtype based on ELF class.

Here is a simple test:

  [loongson at linux ~]$ cat hello.c 
  #include <stdio.h>
  
  int main()
  {
  	printf("Hello, World!\n");
  	return 0;
  }
  [loongson at linux ~]$ clang hello.c -g -o hello

Without this patch:

  [loongson at linux ~]$ llvm-project/llvm/build/bin/lldb hello
  (lldb) target create "hello"
  error: '/home/loongson/hello' doesn't contain any 'host' platform architectures: unknown

With this patch:

  [loongson at linux ~]$ llvm-project/llvm/build/bin/lldb hello
  (lldb) target create "hello"
  Current executable set to '/home/loongson/hello' (loongarch64).
  (lldb) run
  Process 735167 launched: '/home/loongson/hello' (loongarch64)
  Hello, World!
  Process 735167 exited with status = 0 (0x00000000) 
  (lldb) quit
  [loongson at linux ~]$ llvm-project/llvm/build/bin/llvm-lit llvm-project/lldb/test/Shell/ObjectFile/ELF/loongarch-arch.yaml
  llvm-lit: /home/loongson/llvm-project/llvm/utils/lit/lit/llvm/config.py:456: note: using clang: /home/loongson/llvm-project/llvm/build/bin/clang
  -- Testing: 1 tests, 1 workers --
  PASS: lldb-shell :: ObjectFile/ELF/loongarch-arch.yaml (1 of 1)
  
  Testing Time: 0.09s
    Passed: 1


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D137057

Files:
  lldb/include/lldb/Utility/ArchSpec.h
  lldb/source/Plugins/ObjectFile/ELF/ObjectFileELF.cpp
  lldb/source/Utility/ArchSpec.cpp
  lldb/test/Shell/ObjectFile/ELF/loongarch-arch.yaml

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