per review: hide duplicate system log, remove previous dup management

tools/decoder.py

@@ -105,6 +105,8 @@ def decode_lines(format_addresses, elf, lines):
 
     STACK_LINE_RE = re.compile(r"^[0-9a-f]{8}:\s\s+")
 
+    IGNORE_DUP = re.compile(r"^(epc1=0x........,|Fatal exception )")
+
     CUT_HERE_STRING = "CUT HERE FOR EXCEPTION DECODER"
     DECODE_IT = "DECODE IT"
     EXCEPTION_STRING = "Exception ("
@@ -127,14 +129,15 @@ def print_all_addresses(addresses):
     def format_address(address):
         return "\n".join(format_addresses(elf, [address]))
 
-    lastaddr = {}
     for line in lines:
         # ctx could happen multiple times. for the 2nd one, reset list
         # ctx: bearssl *or* ctx: cont *or* ctx: sys *or* ctx: whatever
         if in_stack and "ctx:" in line:
             stack_addresses = print_all_addresses(stack_addresses)
             last_stack = line.strip()
         # 3fffffb0:  feefeffe feefeffe 3ffe85d8 401004ed
+        elif IGNORE_DUP.match(line):
+            continue
         elif in_stack and STACK_LINE_RE.match(line):
             _, addrs = line.split(":")
             addrs = ANY_ADDR_RE.findall(addrs)
@@ -146,13 +149,9 @@ def format_address(address):
             for pair in pairs:
                 name, addr = pair.split("=")
                 if name in ["epc1", "excvaddr"]:
-                    addr = addr.rstrip(',')
-                    if not name in lastaddr or lastaddr[name] != addr:
-                        if addr != '0x00000000':
-                            lastaddr[name] = addr
-                        output = format_address(addr)
-                        if output:
-                            print(f"{name}={output}")
+                    output = format_address(addr)
+                    if output:
+                        print(f"{name}={output}")
         # Exception (123):
         # Other reasons coming before the guard shown as-is
         elif EXCEPTION_STRING in line: