Support to multi-threading and pthread interface (POSIX.1-2008) (#23)

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

diff --git a/lunaix-os/scripts/gdb/lunadbg/structs/signal.py b/lunaix-os/scripts/gdb/lunadbg/structs/signal.py
new file mode 100644 (file)
index 0000000..5fbf9c1
--- /dev/null
+++ b/lunaix-os/scripts/gdb/lunadbg/structs/signal.py
@@ -0,0 +1,52 @@
+from gdb import Type, Value, lookup_type
+from . import KernelStruct
+from ..pp import MyPrettyPrinter
+
+class SignalContext(KernelStruct):
+    __SIGNUM = 16
+    def __init__(self, gdb_inferior: Value) -> None:
+        super().__init__(gdb_inferior, SignalContext)
+
+    @staticmethod
+    def get_type() -> Type:
+        return lookup_type("struct sigctx").pointer()
+
+    def print_abstract(self, pp : MyPrettyPrinter, *args):
+        sigactive = self._kstruct["sig_active"]
+        sigpending = SignalHelper.get_sig_bitmap(self._kstruct["sig_pending"])
+
+        pp.print(f"sig: handling={sigactive}, pending=[{sigpending}]")
+    
+    def print_simple(self, pp : MyPrettyPrinter, *args):
+        pp.print_field(self._kstruct, "sig_active")
+        pp.print_field(self._kstruct, "sig_pending", cast=SignalHelper.get_sig_bitmap)
+        pp.print_field(self._kstruct, "sig_mask", cast=SignalHelper.get_sig_bitmap)
+
+        order = []
+        active = int(self._kstruct['sig_active'])
+        sig_order = self._kstruct["sig_order"]
+        while active != 0:
+            order.append(str(active))
+            active = int(sig_order[active])
+
+        pp.print("nestings:", ' -> '.join(reversed(order)))
+    
+    def print_detailed(self, pp, *args):
+        self.print_simple(pp)
+    
+
+
+class SignalHelper:
+
+    @staticmethod
+    def get_sig_bitmap(sigbmp):
+        if sigbmp == 0:
+            return '<None>'
+        v = []
+        i = 0
+        while sigbmp != 0:
+            if sigbmp & 1 != 0:
+                v.append(str(i))
+            sigbmp = sigbmp >> 1
+            i+=1
+        return ",".join(v)
\ No newline at end of file