diff options
Diffstat (limited to 'source/notes/pic-mcu/pickit2/pk2cmd-stuff/pic24.py')
| -rw-r--r-- | source/notes/pic-mcu/pickit2/pk2cmd-stuff/pic24.py | 216 |
1 files changed, 216 insertions, 0 deletions
diff --git a/source/notes/pic-mcu/pickit2/pk2cmd-stuff/pic24.py b/source/notes/pic-mcu/pickit2/pk2cmd-stuff/pic24.py new file mode 100644 index 0000000..e0adef0 --- /dev/null +++ b/source/notes/pic-mcu/pickit2/pk2cmd-stuff/pic24.py @@ -0,0 +1,216 @@ +def render(instruction): + return "{} {}".format(instruction['mnemonic'], instruction['op']) + + +def Table_5_12(nibble): + return "Table 5.12 TODO" + +def Table_5_11(nibble): + return "Table 5.11 TODO" + +def Table_5_10(nibble): + return "Table 5.10 TODO" + +def YDataPrefetchDest_5_9(nibble): + return "Table 5.9 TODO" + +def YDataPrefetchOperation_5_8(nibble): + return "Table 5.8 TODO" + +def XDataPrefetchDest_5_7(nibble): + return "Table 5.7 TODO" + +def XDataPrefetchOperation_5_6(nibble): + return "Table 5.6 TODO" + +def readWd_5_5(octet): + return [ + "Wd", + "[Wd]", + "[Wd--]", + "[Wd++]", + "[--Wd]", + "[++Wd]", + "[Wd + Wb]", + "[Wd + Wb]" + ][octet] + +def readWs_5_4(octet): + return [ + "Ws", + "[Ws]", + "[Ws--]", + "[Ws++]", + "[--Ws]", + "[++Ws]", + "[Ws + Wb]", + "[Ws + Wb]" + ][octet] + +def readWd_5_3(octet): + return [ + "Wd", + "[Wd]", + "[Wd--]", + "[Wd++]", + "[--Wd]", + "[++Wd]", + "ERR", + "ERR" + ][octet] + +def readWs_5_2(octet): + return [ + "Ws", + "[Ws]", + "[Ws--]", + "[Ws++]", + "[--Ws]", + "[++Ws]", + "ERR", + "ERR" + ][octet] + +def disassemble(blob, offset): +# print ("Disassembling " + str(blob)) + instrbytes = blob[offset:offset + 3] +# instrbytes.reverse() + print("Disassembling {} {} {}".format(hex(instrbytes[0]), hex(instrbytes[1]), hex(instrbytes[2]))) + instr = {} + instr['op'] = '' + size = 1 + + if instrbytes[2] == 0x0: + instr['mnemonic'] = 'nop' + if instrbytes[2] == 0x1: + instr['mnemonic'] = 'br*' + if instrbytes[2] == 0x2: + instr['mnemonic'] = 'call' + if instrbytes[2] == 0x3: + instr['mnemonic'] = '-' + if instrbytes[2] == 0x4: + instr['mnemonic'] = 'goto' + size = 2 + w2 = blob[offset + 3:offset + 6] +# w2.reverse() + n_hi = ((instrbytes[1] << 8) + instrbytes[0]) + if w2[0] != 0 or w2[1] != 0: + instr['mnemonic'] = 'goto [BAD]' + n_lo = w2[0] + n = n_hi + (n_lo << 16) + instr["op"] = hex(n) + if instrbytes[2] == 0x5: + instr['mnemonic'] = 'retlw' + if instrbytes[2] == 0x6: + instr['mnemonic'] = 'retfie' + if instrbytes[2] == 0x7: + instr['mnemonic'] = 'rcall' + if instrbytes[2] == 0x8: + instr['mnemonic'] = 'do' + if instrbytes[2] == 0x9: + instr['mnemonic'] = 'repeat' + if instrbytes[2] == 0xa: + instr['mnemonic'] = '-' + if instrbytes[2] == 0xb: + instr['mnemonic'] = '-' + if instrbytes[2] == 0xc: + instr['mnemonic'] = 'bra(oa)' + instr['mnemonic'] += " (dsPIC3XF only)" + if instrbytes[2] == 0xd: + instr['mnemonic'] = 'bra(ob)' + instr['mnemonic'] += " (dsPIC3XF only)" + if instrbytes[2] == 0xe: + instr['mnemonic'] = 'bra(sa)' + instr['mnemonic'] += " (dsPIC3XF only)" + if instrbytes[2] == 0xf: + instr['mnemonic'] = 'bra(sb)' + instr['mnemonic'] += " (dsPIC3XF only)" + if instrbytes[2] >= 0x10 and instrbytes[2] < 0x18: + instr['mnemonic'] = 'subr' + if instrbytes[2] >= 0x18 and instrbytes[2] < 0x20: + instr['mnemonic'] = 'subbr' + if instrbytes[2] >= 0x20 and instrbytes[2] < 0x30: + instr['mnemonic'] = 'mov' + word = instrbytes[0] | (instrbytes[1] << 8) | (instrbytes[2] << 16) + imm = (word & 0x0ffff0) >> 4 + reg = word & 0xf + instr['op'] = "#" + hex(imm) + ", W" + str(reg) + + if instrbytes[2] >= 0x80 and instrbytes[2] < 0x90: + instr['mnemonic'] = 'mov' + word = instrbytes[0] | (instrbytes[1] << 8) | (instrbytes[2] << 16) + f = (word & 0x07fff0) >> 4 + reg = word & 0xf + + if instrbytes[2] < 0x88: + instr['op'] = "[" + hex(f) + "], W" + str(reg) + else: + instr['op'] = "W" + str(reg) + ", [" + hex(f) + "]" + + if instrbytes[2] >= 0xc0 and instrbytes[2] < 0xd0: + instr['mnemonic'] = "(dsPIC3XF only)" + + if instrbytes[2] == 0xB4 and (instrbytes[1] & 0x80) == 0x00: + instr['mnemonic'] = "ADD" + B = instrbytes[1] & 0x40 + D = instrbytes[1] & 0x20 + f = ((instrbytes[1] & 0x1f) << 8) + instrbytes[0] + + if B: + instr['mnemonic'] += '.B' + + instr['op'] = "RAM:" + hex(f) + + if D: + instr['op'] += ', W0' + if instrbytes[2] == 0xaa: + instr['mnemonic'] = "BTG" + # TODO: not clear what is .B mode + bit4 = ((instrbytes[1] >> 4) & 0x0e) + (instrbytes[0] & 0x01) + f = ((instrbytes[1] & 0x1f) << 7) + (instrbytes[0] >> 1) + instr['op'] = "{}, #{}".format(hex(f), hex(bit4)) + if instrbytes[2] == 0xba: + instr['mnemonic'] = "TBLRD" + if (instrbytes[1] & 0x80) != 0: + instr['mnemonic'] += 'H' + else: + instr['mnemonic'] += 'L' + + if (instrbytes[1] & 0x40) != 0: + instr['mnemonic'] += '.B' + + s = (instrbytes[0] & 0x0f) + p = (instrbytes[0] >> 4) & 0x07 + d = ((instrbytes[0] >> 7) & 0x01) + ((instrbytes[1] << 1) & 0xf) + q = (instrbytes[1] & 0x38) >> 3 + + srcOp = readWs_5_2(p).replace("Ws", "W" + str(s)) + dstOp = readWd_5_3(q).replace("Wd", "W" + str(d)) + + instr['op'] = "{}, {}".format(srcOp, dstOp) + if instrbytes[2] == 0xbb: + instr['mnemonic'] = "TBLWT" + if (instrbytes[1] & 0x80) != 0: + instr['mnemonic'] += 'H' + else: + instr['mnemonic'] += 'L' + + if (instrbytes[1] & 0x40) != 0: + instr['mnemonic'] += '.B' + + s = (instrbytes[0] & 0x0f) + p = (instrbytes[0] >> 4) & 0x07 + d = ((instrbytes[0] >> 7) & 0x01) + ((instrbytes[1] << 1) & 0xf) + q = (instrbytes[1] & 0x38) >> 3 + + srcOp = readWs_5_2(p).replace("Ws", "W" + str(s)) + dstOp = readWd_5_3(q).replace("Wd", "W" + str(d)) + + instr['op'] = "{}, {}".format(srcOp, dstOp) + + if 'mnemonic' not in instr: + instr = instrbytes[0] | (instrbytes[1] << 8) | (instrbytes[2] << 16) + return (offset + 3, "Unknown instruction: " + hex(instr)) + + return (offset + 3 * size, instr) + |