mirror of
https://github.com/Polprzewodnikowy/SummerCart64.git
synced 2024-12-27 21:41:55 +01:00
67 lines
2.5 KiB
Python
67 lines
2.5 KiB
Python
#!/usr/bin/env python3
|
|
|
|
import sys, re, subprocess
|
|
|
|
trace_filename = sys.argv[1]
|
|
elf_filename = sys.argv[2]
|
|
|
|
insns = dict()
|
|
|
|
with subprocess.Popen(["riscv32-unknown-elf-objdump", "-d", elf_filename], stdout=subprocess.PIPE) as proc:
|
|
while True:
|
|
line = proc.stdout.readline().decode("ascii")
|
|
if line == '': break
|
|
match = re.match(r'^\s*([0-9a-f]+):\s+([0-9a-f]+)\s*(.*)', line)
|
|
if match: insns[int(match.group(1), 16)] = (int(match.group(2), 16), match.group(3).replace("\t", " "))
|
|
|
|
with open(trace_filename, "r") as f:
|
|
pc = -1
|
|
last_irq = False
|
|
for line in f:
|
|
raw_data = int(line.replace("x", "0"), 16)
|
|
payload = raw_data & 0xffffffff
|
|
irq_active = (raw_data & 0x800000000) != 0
|
|
is_addr = (raw_data & 0x200000000) != 0
|
|
is_branch = (raw_data & 0x100000000) != 0
|
|
info = "%s %s%08x" % ("IRQ" if irq_active or last_irq else " ",
|
|
">" if is_branch else "@" if is_addr else "=", payload)
|
|
|
|
if irq_active and not last_irq:
|
|
pc = 0x10
|
|
|
|
if pc >= 0:
|
|
if pc in insns:
|
|
insn_opcode, insn_desc = insns[pc]
|
|
opname = insn_desc.split()[0]
|
|
|
|
if insn_opcode == 0x0400000b:
|
|
insn_desc = "retirq"
|
|
opname = "retirq"
|
|
|
|
if is_branch and opname not in ["j", "jal", "jr", "jalr", "ret", "retirq",
|
|
"beq", "bne", "blt", "ble", "bge", "bgt", "bltu", "bleu", "bgeu", "bgtu",
|
|
"beqz", "bnez", "blez", "bgez", "bltz", "bgtz"]:
|
|
print("%s ** UNEXPECTED BRANCH DATA FOR INSN AT %08x! **" % (info, pc))
|
|
|
|
if is_addr and opname not in ["lb", "lh", "lw", "lbu", "lhu", "sb", "sh", "sw"]:
|
|
print("%s ** UNEXPECTED ADDR DATA FOR INSN AT %08x! **" % (info, pc))
|
|
|
|
opcode_fmt = "%08x" if (insn_opcode & 3) == 3 else " %04x"
|
|
print(("%s | %08x | " + opcode_fmt + " | %s") % (info, pc, insn_opcode, insn_desc))
|
|
if not is_addr:
|
|
pc += 4 if (insn_opcode & 3) == 3 else 2
|
|
else:
|
|
print("%s ** NO INFORMATION ON INSN AT %08x! **" % (info, pc))
|
|
pc = -1
|
|
else:
|
|
if is_branch:
|
|
print("%s ** FOUND BRANCH AND STARTING DECODING **" % info)
|
|
else:
|
|
print("%s ** SKIPPING DATA UNTIL NEXT BRANCH **" % info)
|
|
|
|
if is_branch:
|
|
pc = payload
|
|
|
|
last_irq = irq_active
|
|
|