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# 重新分析帧槽创建顺序
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# 在 LowerFunctionParams 中：
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# - 前8个参数：创建参数帧槽（CreateFrameIndex）
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# - 第9个及以后的参数：创建参数帧槽+ 创建arg_slot（CreateCalleeStackArgFrameIndex）
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num_params = 500
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# 模拟帧槽创建
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slots = []
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for i in range(num_params):
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if i < 8:
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# 前8个参数：只创建参数帧槽
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slots.append(('param', i, False, False)) # (type, index, is_stack_arg, is_callee_stack_arg)
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else:
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# 第9个及以后的参数：创建参数帧槽和arg_slot
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slots.append(('param', i, False, False)) # 参数帧槽
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slots.append(('arg_slot', i, True, True)) # arg_slot
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# 然后是alloca帧槽
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num_alloca = 500
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for i in range(num_alloca):
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slots.append(('alloca', num_params + i, False, False))
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# 然后是load帧槽
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slots.append(('load', num_params + num_alloca, False, False))
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print(f"总帧槽数: {len(slots)}")
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# 计算偏移量
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local_cursor = 0
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stack_arg_cursor = 0
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for slot_type, index, is_stack_arg, is_callee_stack_arg in slots:
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if is_stack_arg:
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offset = stack_arg_cursor
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stack_arg_cursor += 8
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else:
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local_cursor = ((local_cursor + 4 - 1) // 4) * 4
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local_cursor += 4
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offset = -local_cursor
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# 计算local_size
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local_size = ((local_cursor + 16 - 1) // 16) * 16
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print(f"local_cursor = {local_cursor}")
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print(f"local_size = {local_size}")
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# 计算sp_offset_base
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sp_offset_base = local_size + 16
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print(f"sp_offset_base = {sp_offset_base}")
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# 找到第500个参数的相关帧槽
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print("\n第500个参数的相关帧槽:")
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param_slot_idx = None
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arg_slot_idx = None
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for i, (slot_type, index, is_stack_arg, is_callee_stack_arg) in enumerate(slots):
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if slot_type == 'param' and index == 499:
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param_slot_idx = i
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if slot_type == 'arg_slot' and index == 499:
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arg_slot_idx = i
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print(f" 参数帧槽索引: {param_slot_idx}")
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print(f" arg_slot索引: {arg_slot_idx}")
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# 计算这些帧槽的偏移量
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local_cursor = 0
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stack_arg_cursor = 0
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for i, (slot_type, index, is_stack_arg, is_callee_stack_arg) in enumerate(slots):
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if is_stack_arg:
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offset = stack_arg_cursor
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stack_arg_cursor += 8
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else:
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local_cursor = ((local_cursor + 4 - 1) // 4) * 4
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local_cursor += 4
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offset = -local_cursor
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if i == param_slot_idx:
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print(f" 参数帧槽: offset = {offset}")
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if i == arg_slot_idx:
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final_offset = sp_offset_base + offset
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print(f" arg_slot: offset = {final_offset} (原offset = {offset})")
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# 找到第500个alloca帧槽
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print("\n第500个alloca帧槽:")
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alloca_slot_idx = None
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for i, (slot_type, index, is_stack_arg, is_callee_stack_arg) in enumerate(slots):
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if slot_type == 'alloca' and index == num_params + 499:
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alloca_slot_idx = i
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break
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print(f" alloca帧槽索引: {alloca_slot_idx}")
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# 计算偏移量
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local_cursor = 0
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stack_arg_cursor = 0
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for i, (slot_type, index, is_stack_arg, is_callee_stack_arg) in enumerate(slots):
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if is_stack_arg:
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offset = stack_arg_cursor
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stack_arg_cursor += 8
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else:
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local_cursor = ((local_cursor + 4 - 1) // 4) * 4
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local_cursor += 4
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offset = -local_cursor
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if i == alloca_slot_idx:
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print(f" alloca帧槽: offset = {offset}")
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break
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# 找到load帧槽
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print("\nload帧槽:")
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load_slot_idx = len(slots) - 1
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print(f" load帧槽索引: {load_slot_idx}")
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# 计算偏移量
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local_cursor = 0
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stack_arg_cursor = 0
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for i, (slot_type, index, is_stack_arg, is_callee_stack_arg) in enumerate(slots):
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if is_stack_arg:
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offset = stack_arg_cursor
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stack_arg_cursor += 8
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else:
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local_cursor = ((local_cursor + 4 - 1) // 4) * 4
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local_cursor += 4
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offset = -local_cursor
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if i == load_slot_idx:
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print(f" load帧槽: offset = {offset}")
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break
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