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Add Stop at exception feature to the debugger (#1693)

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JerryScript-DCO-1.0-Signed-off-by: Levente Orban orbanl@inf.u-szeged.hu
This commit is contained in:
Levente Orban
2017-03-28 12:51:10 +02:00
committed by Zoltan Herczeg
parent da07252c45
commit 21cec3eb16
10 changed files with 279 additions and 108 deletions
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jerry-debugger/jerry-client-ws.py
+83 -41
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@@ -40,23 +40,26 @@ JERRY_DEBUGGER_FUNCTION_NAME = 11
JERRY_DEBUGGER_FUNCTION_NAME_END = 12
JERRY_DEBUGGER_RELEASE_BYTE_CODE_CP = 13
JERRY_DEBUGGER_BREAKPOINT_HIT = 14
JERRY_DEBUGGER_BACKTRACE = 15
JERRY_DEBUGGER_BACKTRACE_END = 16
JERRY_DEBUGGER_EVAL_RESULT = 17
JERRY_DEBUGGER_EVAL_RESULT_END = 18
JERRY_DEBUGGER_EVAL_ERROR = 19
JERRY_DEBUGGER_EVAL_ERROR_END = 20
JERRY_DEBUGGER_EXCEPTION_HIT = 15
JERRY_DEBUGGER_BACKTRACE = 16
JERRY_DEBUGGER_BACKTRACE_END = 17
JERRY_DEBUGGER_EVAL_RESULT = 18
JERRY_DEBUGGER_EVAL_RESULT_END = 19
JERRY_DEBUGGER_EVAL_ERROR = 20
JERRY_DEBUGGER_EVAL_ERROR_END = 21
# Messages sent by the client to server.
JERRY_DEBUGGER_FREE_BYTE_CODE_CP = 1
JERRY_DEBUGGER_UPDATE_BREAKPOINT = 2
JERRY_DEBUGGER_STOP = 3
JERRY_DEBUGGER_CONTINUE = 4
JERRY_DEBUGGER_STEP = 5
JERRY_DEBUGGER_NEXT = 6
JERRY_DEBUGGER_GET_BACKTRACE = 7
JERRY_DEBUGGER_EVAL = 8
JERRY_DEBUGGER_EVAL_PART = 9
JERRY_DEBUGGER_EXCEPTION_CONFIG = 3
JERRY_DEBUGGER_STOP = 4
JERRY_DEBUGGER_CONTINUE = 5
JERRY_DEBUGGER_STEP = 6
JERRY_DEBUGGER_NEXT = 7
JERRY_DEBUGGER_GET_BACKTRACE = 8
JERRY_DEBUGGER_EVAL = 9
JERRY_DEBUGGER_EVAL_PART = 10
MAX_BUFFER_SIZE = 128
WEBSOCKET_BINARY_FRAME = 2
@@ -122,6 +125,7 @@ class JerryFunction(object):
self.line = line
self.column = column
self.first_breakpoint_line = lines[0]
self.first_breakpoint_offset = offsets[0]
for i in range(len(lines)):
line = lines[i]
@@ -332,6 +336,24 @@ class DebuggerPrompt(Cmd):
do_e = do_eval
def do_exception(self, args):
""" Config the exception handler module """
if not args:
print("Error: Status expected!")
return
enable = int(args)
if enable == 1:
logging.debug("Stop at exception enabled")
elif enable == 0:
logging.debug("Stop at exception disabled")
else:
print("Error: Invalid input! Usage 1: [Enable] or 0: [Disable].")
return
self.debugger.send_exception_config(enable)
class Multimap(object):
@@ -475,13 +497,13 @@ class JerryDebugger(object):
self.send_message(message)
def send_bytecode_cp(self, byte_code_cp):
message = struct.pack(self.byte_order + "BBIB" + self.cp_format,
WEBSOCKET_BINARY_FRAME | WEBSOCKET_FIN_BIT,
WEBSOCKET_FIN_BIT + 1 + self.cp_size,
0,
JERRY_DEBUGGER_FREE_BYTE_CODE_CP,
byte_code_cp)
self.send_message(message)
message = struct.pack(self.byte_order + "BBIB" + self.cp_format,
WEBSOCKET_BINARY_FRAME | WEBSOCKET_FIN_BIT,
WEBSOCKET_FIN_BIT + 1 + self.cp_size,
0,
JERRY_DEBUGGER_FREE_BYTE_CODE_CP,
byte_code_cp)
self.send_message(message)
def send_command(self, command):
message = struct.pack(self.byte_order + "BBIB",
@@ -491,6 +513,15 @@ class JerryDebugger(object):
command)
self.send_message(message)
def send_exception_config(self, enable):
message = struct.pack(self.byte_order + "BBIBB",
WEBSOCKET_BINARY_FRAME | WEBSOCKET_FIN_BIT,
WEBSOCKET_FIN_BIT + 1 + 1,
0,
JERRY_DEBUGGER_EXCEPTION_CONFIG,
enable)
self.send_message(message)
def get_message(self, blocking):
# Connection was closed
if self.message_data is None:
@@ -698,6 +729,23 @@ def set_breakpoint(debugger, string):
print("Breakpoint not found")
return
def get_breakpoint(debugger, breakpoint_data):
function = debugger.function_list[breakpoint_data[0]]
offset = breakpoint_data[1]
if offset in function.offsets:
return (function.offsets[offset], True)
if offset < function.first_breakpoint_offset:
return (function.offsets[function.first_breakpoint_offset], False)
nearest_offset = -1
for current_offset in function.offsets:
if current_offset <= offset and current_offset > nearest_offset:
nearest_offset = current_offset
return (function.offsets[nearest_offset], False)
def main():
args = arguments_parse()
@@ -747,19 +795,24 @@ def main():
elif buffer_type == JERRY_DEBUGGER_RELEASE_BYTE_CODE_CP:
release_function(debugger, data)
elif buffer_type == JERRY_DEBUGGER_BREAKPOINT_HIT:
elif buffer_type in [JERRY_DEBUGGER_BREAKPOINT_HIT, JERRY_DEBUGGER_EXCEPTION_HIT]:
breakpoint_data = struct.unpack(debugger.byte_order + debugger.cp_format + debugger.idx_format, data[3:])
function = debugger.function_list[breakpoint_data[0]]
breakpoint = function.offsets[breakpoint_data[1]]
breakpoint = get_breakpoint(debugger, breakpoint_data)
debugger.last_breakpoint_hit = breakpoint[0]
debugger.last_breakpoint_hit = breakpoint
if buffer_type == JERRY_DEBUGGER_EXCEPTION_HIT:
print("Exception throw detected (to disable automatic stop type exception 0)")
breakpoint_index = ""
if breakpoint.active_index >= 0:
breakpoint_index = " breakpoint:%d" % (breakpoint.active_index)
if breakpoint[1]:
breakpoint_info = "at"
else:
breakpoint_info = "around"
print("Stopped at%s %s" % (breakpoint_index, breakpoint.to_string()))
if breakpoint[0].active_index >= 0:
breakpoint_info += " breakpoint:%d" % (breakpoint[0].active_index)
print("Stopped %s %s" % (breakpoint_info, breakpoint[0].to_string()))
prompt.cmdloop()
if prompt.quit:
@@ -775,20 +828,9 @@ def main():
breakpoint_data = struct.unpack(debugger.byte_order + debugger.cp_format + debugger.idx_format,
data[buffer_pos: buffer_pos + debugger.cp_size + 4])
function = debugger.function_list[breakpoint_data[0]]
best_offset = -1
breakpoint = get_breakpoint(debugger, breakpoint_data)
for offset in function.offsets:
if offset <= breakpoint_data[1] and offset > best_offset:
best_offset = offset
if best_offset >= 0:
breakpoint = function.offsets[best_offset]
print("Frame %d: %s" % (frame_index, breakpoint.to_string()))
elif function.name:
print("Frame %d: %s()" % (frame_index, function.name))
else:
print("Frame %d: <unknown>()" % (frame_index))
print("Frame %d: %s" % (frame_index, breakpoint[0].to_string()))
frame_index += 1
buffer_pos += 6