# 分析汇编代码中的帧槽偏移量

# 从汇编代码中提取的偏移量：
# 第500个参数的参数帧槽：[sp, #7960]
# 第500个参数的alloca帧槽：[x29-2000]
# LowerLoadInst创建的帧槽：[x29-4000]

# 计算帧槽索引和偏移量
# 假设有500个参数，500个alloca，1个load

# 参数帧槽（索引 0-499）
# 前8个参数：is_stack_arg = false
# 第9-500个参数：is_stack_arg = true, is_callee_stack_arg = true

# alloca帧槽（索引 500-999）
# is_stack_arg = false

# load帧槽（索引 1000）
# is_stack_arg = false

# 计算偏移量
num_params = 500
num_alloca = 500

# 模拟帧槽创建
slots = []
for i in range(num_params):
    if i < 8:
        slots.append((i, False, False))  # (index, is_stack_arg, is_callee_stack_arg)
    else:
        slots.append((i, True, True))

for i in range(num_alloca):
    slots.append((num_params + i, False, False))

slots.append((num_params + num_alloca, False, False))

# 计算偏移量
local_cursor = 0
stack_arg_cursor = 0

for index, is_stack_arg, is_callee_stack_arg in slots:
    if is_stack_arg:
        offset = stack_arg_cursor
        stack_arg_cursor += 8
    else:
        local_cursor = ((local_cursor + 4 - 1) // 4) * 4
        local_cursor += 4
        offset = -local_cursor

# 计算local_size
local_size = ((local_cursor + 16 - 1) // 16) * 16
print(f"local_cursor = {local_cursor}")
print(f"local_size = {local_size}")

# 计算sp_offset_base
sp_offset_base = local_size + 16
print(f"sp_offset_base = {sp_offset_base}")

# 更新is_callee_stack_arg的偏移量
print("\n第500个参数的参数帧槽（索引 499）:")
index = 499
_, is_stack_arg, is_callee_stack_arg = slots[index]
# 重新计算偏移量
local_cursor = 0
stack_arg_cursor = 0
for i, (idx, is_sa, is_csa) in enumerate(slots):
    if is_sa:
        offset = stack_arg_cursor
        stack_arg_cursor += 8
    else:
        local_cursor = ((local_cursor + 4 - 1) // 4) * 4
        local_cursor += 4
        offset = -local_cursor
    if i == index:
        if is_csa:
            final_offset = sp_offset_base + offset
        else:
            final_offset = offset
        print(f"  索引 {idx}: offset = {final_offset} (is_stack_arg = {is_sa}, is_callee_stack_arg = {is_csa})")
        break

print("\n第500个参数的alloca帧槽（索引 999）:")
index = 999
local_cursor = 0
stack_arg_cursor = 0
for i, (idx, is_sa, is_csa) in enumerate(slots):
    if is_sa:
        offset = stack_arg_cursor
        stack_arg_cursor += 8
    else:
        local_cursor = ((local_cursor + 4 - 1) // 4) * 4
        local_cursor += 4
        offset = -local_cursor
    if i == index:
        if is_csa:
            final_offset = sp_offset_base + offset
        else:
            final_offset = offset
        print(f"  索引 {idx}: offset = {final_offset} (is_stack_arg = {is_sa}, is_callee_stack_arg = {is_csa})")
        break

print("\nload帧槽（索引 1000）:")
index = 1000
local_cursor = 0
stack_arg_cursor = 0
for i, (idx, is_sa, is_csa) in enumerate(slots):
    if is_sa:
        offset = stack_arg_cursor
        stack_arg_cursor += 8
    else:
        local_cursor = ((local_cursor + 4 - 1) // 4) * 4
        local_cursor += 4
        offset = -local_cursor
    if i == index:
        if is_csa:
            final_offset = sp_offset_base + offset
        else:
            final_offset = offset
        print(f"  索引 {idx}: offset = {final_offset} (is_stack_arg = {is_sa}, is_callee_stack_arg = {is_csa})")
        break