65 lines
2.4 KiB
Python
65 lines
2.4 KiB
Python
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"""Source this file into gdb `source ../../tools/gdb-stack-size.py` then run
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`stack-size` to print a backtrace with each frame size next to it."""
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class StackSize(gdb.Command):
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def __init__(self):
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super(StackSize, self).__init__("stack-size", gdb.COMMAND_USER)
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def invoke(self, arg, from_tty):
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frame = gdb.newest_frame()
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total_size = 0
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while frame:
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sp = frame.read_register("sp")
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frame_up = frame.older()
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if not frame_up:
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break
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f = frame.function()
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l = frame.level()
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if l < 10:
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l = "#" + str(l) + " "
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else:
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l = "#" + str(l)
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size = frame_up.read_register("sp") - sp
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total_size += size
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print(l, sp, frame.type(), f, " " * (40 - len(str(f))), size)
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# print(dir(f))
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# Tweak this if for more detail for a specific function.
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if False and f.name == "mp_execute_bytecode":
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b = frame.block()
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prev_b = None
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while not b.is_static:
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print(" block", hex(b.start), hex(b.end), b.function)
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for sym in b:
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if not sym.needs_frame:
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continue
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v = sym.value(frame)
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print(" ", sym.addr_class, v.address, sym.type.sizeof, sym, sym.type, v)
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prev_b = b
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b = b.superblock
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if b.function == f:
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break
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b = prev_b
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print("pc scan", hex(b.start), hex(b.end))
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seen = set()
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for pc in range(b.start, b.end, 2):
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b = gdb.block_for_pc(pc)
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r = (b.start, b.end)
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if r in seen:
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continue
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seen.add(r)
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print(" ", hex(pc), hex(b.start), hex(b.end), b.function)
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for sym in b:
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if not sym.needs_frame:
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continue
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# if sym.type.sizeof <= 4:
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# continue
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v = sym.value(frame)
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print(" ", sym.addr_class, v.address, sym.type.sizeof, sym, sym.type, v)
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frame = frame_up
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print("total size:", total_size)
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StackSize()
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