[Lldb-commits] [lldb] Read and store gnu build id from loaded core file (PR #92492)

[Greg Clayton via lldb-commits]

================
@@ -983,6 +1005,73 @@ llvm::Error ProcessElfCore::ParseThreadContextsFromNoteSegment(
   }
 }
 
+bool ProcessElfCore::IsElf(const lldb::addr_t address) {
+  uint8_t buf[4];
+  Status error;
+  size_t byte_read = ReadMemory(address, buf, 4, error);
+  if (byte_read != 4)
+    return false;
+  return elf::ELFHeader::MagicBytesMatch(buf);
+}
+
+std::optional<UUID> ProcessElfCore::FindNote(const lldb::addr_t address,
+                                             const uint32_t type) {
+  if (!IsElf(address))
+    return std::nullopt;
+  const uint32_t addr_size = GetAddressByteSize();
+  const lldb::offset_t ehdr_phoff_offset = ELFOFFSETOF(Ehdr, e_phoff);
+  const lldb::offset_t ehdr_phentsize_offset = ELFOFFSETOF(Ehdr, e_phentsize);
+  const lldb::offset_t ehdr_phnum_offset = ELFOFFSETOF(Ehdr, e_phnum);
----------------
clayborg wrote:

pass `addr_size` to the macro

https://github.com/llvm/llvm-project/pull/92492