================
@@ -277,6 +286,143 @@ lldb::addr_t ProcessFreeBSDKernel::FindSymbol(const char
*name) {
return sym ? sym->GetLoadAddress(&GetTarget()) : LLDB_INVALID_ADDRESS;
}
+void ProcessFreeBSDKernel::ShowCrashInfo() {
+ Target &target = GetTarget();
+ Debugger &debugger = target.GetDebugger();
+
+ if (!debugger.GetCommandInterpreter().IsInteractive())
+ return;
+
+ Status error;
+
+ // Find msgbufp symbol (pointer to message buffer)
+ lldb::addr_t msgbufp_addr = FindSymbol("msgbufp");
+ if (msgbufp_addr == LLDB_INVALID_ADDRESS)
+ return;
+
+ // Read the pointer value
+ lldb::addr_t msgbufp = ReadPointerFromMemory(msgbufp_addr, error);
+ if (!error.Success() || msgbufp == LLDB_INVALID_ADDRESS)
+ return;
+
+ // Get the type information for struct msgbuf from DWARF
+ TypeQuery query("msgbuf");
+ TypeResults results;
+ target.GetImages().FindTypes(nullptr, query, results);
+
+ uint64_t offset_msg_ptr = 0;
+ uint64_t offset_msg_size = 0;
+ uint64_t offset_msg_wseq = 0;
+ uint64_t offset_msg_rseq = 0;
+
+ if (results.GetTypeMap().GetSize() > 0) {
+ // Found type info - use it to get field offsets
+ CompilerType msgbuf_type =
+ results.GetTypeMap().GetTypeAtIndex(0)->GetForwardCompilerType();
+
+ uint32_t num_fields = msgbuf_type.GetNumFields();
+ for (uint32_t i = 0; i < num_fields; i++) {
+ std::string field_name;
+ uint64_t field_offset = 0;
+ uint32_t field_bitfield_bit_size = 0;
+ bool field_is_bitfield = false;
+
+ msgbuf_type.GetFieldAtIndex(i, field_name, &field_offset,
+ &field_bitfield_bit_size,
&field_is_bitfield);
+
+ if (field_name == "msg_ptr")
+ offset_msg_ptr = field_offset / 8; // Convert bits to bytes
+ else if (field_name == "msg_size")
+ offset_msg_size = field_offset / 8;
+ else if (field_name == "msg_wseq")
+ offset_msg_wseq = field_offset / 8;
+ else if (field_name == "msg_rseq")
+ offset_msg_rseq = field_offset / 8;
+ }
----------------
Michael137 wrote:
Thanks
https://github.com/llvm/llvm-project/pull/178027
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