diff options
Diffstat (limited to 'picorv32/showtrace.py')
-rw-r--r-- | picorv32/showtrace.py | 66 |
1 files changed, 0 insertions, 66 deletions
diff --git a/picorv32/showtrace.py b/picorv32/showtrace.py deleted file mode 100644 index a5d1021..0000000 --- a/picorv32/showtrace.py +++ /dev/null @@ -1,66 +0,0 @@ -#!/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 - |