feat: owloysius - dynamic init function invocator

[lunaix-os.git] / lunaix-os / scripts / gdb / lunadbg / syslog.py

diff --git a/lunaix-os/scripts/gdb/lunadbg/syslog.py b/lunaix-os/scripts/gdb/lunadbg/syslog.py
new file mode 100644 (file)
index 0000000..307b5f3
--- /dev/null
+++ b/lunaix-os/scripts/gdb/lunadbg/syslog.py
@@ -0,0 +1,24 @@
+import gdb
+from .symbols import LunaixSymbols, SymbolDomain
+from .utils import llist_foreach
+
+class SysLogDump(gdb.Command):
+    """Dump the system log"""
+    def __init__(self) -> None:
+        super().__init__("syslog", gdb.COMMAND_USER)
+        self.log_level = ["debug", "info", "warn", "error", "fatal"]
+
+    def syslog_entry_callback(self, idx, ent):
+        time = ent["time"]
+        lvl = ent["lvl"]
+        log = ent["content"]
+
+        time_str = "%04d.%03d"%(int(time / 1000), time % 1000)
+        print(f"[{time_str}] <L{self.log_level[lvl]}> {log.string()}")
+
+    def invoke(self, argument: str, from_tty: bool) -> None:
+        log_recs = LunaixSymbols.exported(SymbolDomain.DEBUG, "kprecs")
+        head = log_recs.deref_and_access("kp_ents.ents").address
+
+        ent_type = gdb.lookup_type("struct kp_entry").pointer()
+        llist_foreach(head, ent_type, lambda a,b: self.syslog_entry_callback(a, b))
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