gdb/linux/cpus.py

2 # gdb helper commands and functions for Linux kernel debugging
14 import gdb
27         return gdb.selected_thread().num - 1
29         tid = gdb.selected_thread().ptid[2]
35         raise gdb.GdbError("Sorry, obtaining the current CPU is not yet "
36                            "supported with this gdb server.")
43         offset = gdb.parse_and_eval(
47             offset = gdb.parse_and_eval(
49         except gdb.error:
62     gdb.events.stop.disconnect(cpu_mask_invalidate)
63     if hasattr(gdb.events, 'new_objfile'):
64         gdb.events.new_objfile.disconnect(cpu_mask_invalidate)
73         mask = gdb.parse_and_eval(mask_name + ".bits")
74         if hasattr(gdb, 'events'):
76             gdb.events.stop.connect(cpu_mask_invalidate)
77             if hasattr(gdb.events, 'new_objfile'):
78                 gdb.events.new_objfile.connect(cpu_mask_invalidate)
126 class LxCpus(gdb.Command):
133         super(LxCpus, self).__init__("lx-cpus", gdb.COMMAND_DATA)
136         gdb.write("Possible CPUs : {}\n".format(list(each_possible_cpu())))
137         gdb.write("Present CPUs  : {}\n".format(list(each_present_cpu())))
138         gdb.write("Online CPUs   : {}\n".format(list(each_online_cpu())))
139         gdb.write("Active CPUs   : {}\n".format(list(each_active_cpu())))
145 class PerCpu(gdb.Function):
156         var_ptr = gdb.parse_and_eval("&" + var_name.string())
166         if gdb.lookup_global_symbol("cpu_tasks"):
169             var_ptr = gdb.parse_and_eval("(struct task_struct *)cpu_tasks[0].task")
172             var_ptr = gdb.parse_and_eval("&pcpu_hot.current_task")
175         current_task_addr = gdb.parse_and_eval("$SP_EL0")
180             raise gdb.GdbError("Sorry, obtaining the current task is not allowed "
183         current_tp = gdb.parse_and_eval("$tp")
184         scratch_reg = gdb.parse_and_eval("$sscratch")
198         raise gdb.GdbError("Sorry, obtaining the current task is not yet "
201 class LxCurrentFunc(gdb.Function):