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# 计算帧槽偏移量
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# 假设有500个参数，每个参数一个帧槽
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# 然后有500个alloca，每个alloca一个帧槽
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# 然后有1个load，一个帧槽
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# 参数帧槽
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num_params = 500
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param_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：CreateFrameIndex（is_stack_arg = false）
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param_slots.append((i, False, False)) # (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：CreateCalleeStackArgFrameIndex（is_stack_arg = true, is_callee_stack_arg = true）
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param_slots.append((i, True, True))
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# alloca帧槽
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num_alloca = 500
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alloca_slots = []
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for i in range(num_alloca):
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index = num_params + i
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alloca_slots.append((index, False, False))
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# load帧槽
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load_slots = [(num_params + num_alloca, False, False)]
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# 所有帧槽
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all_slots = param_slots + alloca_slots + load_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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offsets = []
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for index, is_stack_arg, is_callee_stack_arg in all_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 # align to 4
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local_cursor += 4
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offset = -local_cursor
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offsets.append((index, offset, is_stack_arg, is_callee_stack_arg))
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# 打印前10个和后10个帧槽的偏移量
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print("前10个帧槽:")
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for i in range(10):
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index, offset, is_stack_arg, is_callee_stack_arg = offsets[i]
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print(f" 索引 {index}: offset = {offset}, is_stack_arg = {is_stack_arg}")
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print("\n第490到500个帧槽:")
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for i in range(489, 500):
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index, offset, is_stack_arg, is_callee_stack_arg = offsets[i]
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print(f" 索引 {index}: offset = {offset}, is_stack_arg = {is_stack_arg}")
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print("\n第500到510个帧槽（alloca）:")
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for i in range(500, 510):
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index, offset, is_stack_arg, is_callee_stack_arg = offsets[i]
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print(f" 索引 {index}: offset = {offset}, is_stack_arg = {is_stack_arg}")
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print("\n最后一个帧槽（load）:")
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index, offset, is_stack_arg, is_callee_stack_arg = offsets[-1]
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print(f" 索引 {index}: offset = {offset}, is_stack_arg = {is_stack_arg}")
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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"\nlocal_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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# 更新is_callee_stack_arg的偏移量
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print("\n更新后的is_callee_stack_arg帧槽偏移量:")
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for i, (index, offset, is_stack_arg, is_callee_stack_arg) in enumerate(offsets):
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if is_callee_stack_arg:
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new_offset = sp_offset_base + offset
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print(f" 索引 {index}: offset = {new_offset} (原offset = {offset})")
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if i >= 490 and i < 500:
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break
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