1 files changed, 71 insertions, 0 deletions
diff --git a/source/notes/pic-mcu/pickit2/pk2cmd-stuff/hexdisasm.py b/source/notes/pic-mcu/pickit2/pk2cmd-stuff/hexdisasm.py
new file mode 100644
index 0000000..0c86592
--- /dev/null
+++ b/source/notes/pic-mcu/pickit2/pk2cmd-stuff/hexdisasm.py
@@ -0,0 +1,71 @@
+import pic24
+import pic18
+import pic16
+import sys
+
+arch = "pic18"
+
+hexfile = '../pk2cmd/pk2cmd/PK2V023200.hex'
+
+if len(sys.argv) > 1:
+    hexfile = sys.argv[1]
+
+    if len(sys.argv) > 2:
+        arch = sys.argv[2]
+
+if arch == "pic24":
+    arch = pic24
+elif arch == "pic18":
+    arch = pic18
+elif arch == "pic16":
+    arch = pic16
+else:
+    raise Exception("Invalid arch " + arch)
+
+lines = open(hexfile).readlines()
+
+def read_hex(lines):
+    regions = { 0: [0] * 0x10000 }
+    curr_region = regions[0]
+
+    for line in lines:
+        if not line.startswith(':'):
+            continue
+#            raise Exception("invalid hex line, needs to start with a ':', but was: " + line)
+        bytecount = int(line[1:3], 16)
+        addr = int(line[3:7], 16)
+        rec_type = int(line[7:9], 16)
+        data_end = bytecount * 2 + 9
+        data = line[9:data_end]
+        # ignoring checksum because lazy
+
+        if rec_type == 4:
+            ext_linear_addr = int(data, 16)
+            if ext_linear_addr not in regions:
+                regions[ext_linear_addr] = [0] * 0x10000
+
+            curr_region = regions[ext_linear_addr]
+        elif rec_type == 0:
+            for i in range(bytecount):
+                curr_region[addr + i] = int(data[i*2:i*2 + 2], 16)
+        elif rec_type == 1:
+            print("Read HEX file")
+            return regions
+        else:
+            raise Exception("Unsupported record type: " + str(rec_type))
+
+
+memory_regions = read_hex(lines)
+
+i = 0
+
+coderegion = memory_regions[0]
+
+while i < len(coderegion):
+    (i, instr) = arch.disassemble(coderegion, i)
+    if "Unknown instr" in instr:
+        print(instr)
+    elif 'op' not in instr:
+        print(instr['mnemonic'])
+    else:
+        print("{} {}".format(instr['mnemonic'], instr['op']))