75     def __init__(self, data, truncated=False):  argument
76         self.data = data
77         self.size_bytes = len(data)
78         self.truncated = truncated
80     def get_bits(self, start, count=0):  argument
91             count = len(self.data) * 6 - start
95         for i, b in enumerate(self.data[start_byte:]):
117     def __str__(self):  argument
118         return '%d byte packet%s' % (self.size_bytes, ' (truncated)' if self.truncated else '')
122     def __init__(self, packets, truncated=False):  argument
129         self.packets = packets
130         self.truncated = truncated
132             self.msg_type = None
134             self.msg_type = self._get_type()
137         self.pc_start = 0   # inclusive
138         self.pc_end = 0     # not inclusive
139         self.pc_target = 0      # PC of the next range
140         self.is_exception = False   # whether the message indicates an exception
141         self.is_correlation = False     # whether this is a correlation message
144         self.icnt = 0
145         self.uaddr = 0
146         self.dcont = 0
150             self._decode()
152     def _get_type(self):  argument
156         return self.packets[0].get_bits(0, 6)
158     def _decode(self):  argument
160         if self.msg_type == TVAL_INDBR:
161             self.icnt = self.packets[0].get_bits(7, -1)
162             self.btype = self.packets[0].get_bits(6, 1)
163             self.uaddr = self.packets[1].get_bits(0)
164             self.is_exception = self.btype > 0
165         elif self.msg_type == TVAL_INDBRSYNC:
166             self.icnt = self.packets[0].get_bits(8, -1)
167             self.btype = self.packets[0].get_bits(7, 1)
168             self.pc_target = self.packets[1].get_bits(0)
169             self.dcont = self.packets[0].get_bits(6, 1)
170             self.is_exception = self.btype > 0
171         elif self.msg_type == TVAL_SYNC:
172             self.icnt = self.packets[0].get_bits(7, -1)
173             self.dcont = self.packets[0].get_bits(6, 1)
174             self.pc_target = self.packets[1].get_bits(0)
175         elif self.msg_type == TVAL_CORR:
176             self.icnt = self.packets[0].get_bits(12, -1)
177             self.is_correlation = True
179             raise NotImplementedError('Unknown message type (%d)' % self.msg_type)
181     def process_forward(self, cur_pc):  argument
188         assert not self.truncated
191         if self.msg_type == TVAL_INDBR:
192             next_pc = cur_pc ^ self.uaddr
193             self.pc_target = next_pc
194             self.pc_start = cur_pc
195             self.pc_end = self.pc_start + self.icnt + 1
196         if self.msg_type == TVAL_INDBRSYNC:
197             next_pc = self.pc_target
198             self.pc_start = cur_pc
199             self.pc_end = cur_pc + self.icnt + 1
200         if self.msg_type == TVAL_SYNC:
201             next_pc = self.pc_target
202             self.pc_start = next_pc - self.icnt
203             self.pc_end = next_pc + 1
204         if self.msg_type == TVAL_CORR:
208     def process_backward(self, cur_pc):  argument
215         assert not self.truncated
219         assert self.msg_type != TVAL_INDBRSYNC
220         assert self.msg_type != TVAL_SYNC
223         self.pc_target = cur_pc
224         if self.msg_type == TVAL_INDBR:
225             prev_pc ^= self.uaddr
226             self.pc_start = prev_pc
227             self.pc_end = prev_pc + self.icnt + 1
228         if self.msg_type == TVAL_CORR:
232     def __str__(self):  argument
233         desc = 'Unknown (%d)' % self.msg_type
235         if self.truncated:
237         if self.msg_type == TVAL_INDBR:
239             extra = ', icnt=%d, uaddr=0x%x, exc=%d' % (self.icnt, self.uaddr, self.is_exception)
240         if self.msg_type == TVAL_INDBRSYNC:
242             extra = ', icnt=%d, dcont=%d, exc=%d' % (self.icnt, self.dcont, self.is_exception)
243         if self.msg_type == TVAL_SYNC:
245             extra = ', icnt=%d, dcont=%d' % (self.icnt, self.dcont)
246         if self.msg_type == TVAL_CORR:
248             extra = ', icnt=%d' % self.icnt
250             desc, len(self.packets), self.pc_start, self.pc_end, self.pc_target) + extra